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-rw-r--r--release/picobsd/tinyware/mined/Makefile18
-rw-r--r--release/picobsd/tinyware/mined/README20
-rw-r--r--release/picobsd/tinyware/mined/mined.h377
-rw-r--r--release/picobsd/tinyware/mined/mined1.c2025
-rw-r--r--release/picobsd/tinyware/mined/mined2.c1763
-rw-r--r--release/picobsd/tinyware/msh/Makefile16
-rw-r--r--release/picobsd/tinyware/msh/README13
-rw-r--r--release/picobsd/tinyware/msh/sh.1261
-rw-r--r--release/picobsd/tinyware/msh/sh.h388
-rw-r--r--release/picobsd/tinyware/msh/sh1.c953
-rw-r--r--release/picobsd/tinyware/msh/sh2.c801
-rw-r--r--release/picobsd/tinyware/msh/sh3.c1143
-rw-r--r--release/picobsd/tinyware/msh/sh4.c767
-rw-r--r--release/picobsd/tinyware/msh/sh5.c675
-rw-r--r--release/picobsd/tinyware/msh/sh6.c9
15 files changed, 9229 insertions, 0 deletions
diff --git a/release/picobsd/tinyware/mined/Makefile b/release/picobsd/tinyware/mined/Makefile
new file mode 100644
index 000000000000..7a45bbbc35ee
--- /dev/null
+++ b/release/picobsd/tinyware/mined/Makefile
@@ -0,0 +1,18 @@
+# Makefile for mined
+
+CFLAGS = -D_POSIX_SOURCE -DASSUME_CONS25
+
+OBJ = mined1.o mined2.o
+
+all: mined
+
+mined: $(OBJ)
+ $(CC) -static -o $@ $(OBJ)
+
+install: /usr/bin/mined
+
+
+$(OBJ): mined.h
+
+clean:
+ rm -f mined *.o *.s core *.bak
diff --git a/release/picobsd/tinyware/mined/README b/release/picobsd/tinyware/mined/README
new file mode 100644
index 000000000000..381ff10c81c3
--- /dev/null
+++ b/release/picobsd/tinyware/mined/README
@@ -0,0 +1,20 @@
+Warsaw, 1998.10.21
+
+This is a port of Minix editor. It's small, fast and relatively
+robust. It can perform basic editing commands, block operations,
+and search and replace.
+
+The keybindings are just plain insane. I added a help screen
+(available under F1), and remapped some of the wildest keys to
+function keys. If you have some time and a bit of hacking skills,
+you're welcome to sanitize it. :-)
+
+A bit of warning: one of the reasons for its small size is that it
+doesn't use any termcap calls - it uses hardwired codes for 'cons25'
+terminal type. If you try to use it with some other terminal, you
+have to change them, or recompile with -DUNIX -ltermcap.
+
+Andrzej Bialecki
+<abial@FreeBSD.org>
+
+$Id$
diff --git a/release/picobsd/tinyware/mined/mined.h b/release/picobsd/tinyware/mined/mined.h
new file mode 100644
index 000000000000..cb97f9aa9d01
--- /dev/null
+++ b/release/picobsd/tinyware/mined/mined.h
@@ -0,0 +1,377 @@
+/*========================================================================*
+ * Mined.h *
+ *========================================================================*/
+
+#include <sys/types.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <limits.h>
+
+#ifndef YMAX
+#ifdef UNIX
+#include <stdio.h>
+#undef putchar
+#undef getchar
+#undef NULL
+#undef EOF
+extern char *CE, *VS, *SO, *SE, *CL, *AL, *CM;
+#define YMAX 49
+#else
+#define YMAX 24 /* Maximum y coordinate starting at 0 */
+/* Escape sequences. */
+extern char *enter_string; /* String printed on entering mined */
+extern char *rev_video; /* String for starting reverse video */
+extern char *normal_video; /* String for leaving reverse video */
+extern char *rev_scroll; /* String for reverse scrolling */
+extern char *pos_string; /* Absolute cursor positioning */
+#define X_PLUS ' ' /* To be added to x for cursor sequence */
+#define Y_PLUS ' ' /* To be added to y for cursor sequence */
+#endif /* UNIX */
+
+#define XMAX 79 /* Maximum x coordinate starting at 0*/
+#define SCREENMAX (YMAX - 1) /* Number of lines displayed */
+#define XBREAK (XMAX - 1) /* Line shift at this coordinate */
+#define SHIFT_SIZE 25 /* Number of chars to shift */
+#define SHIFT_MARK '!' /* Char indicating line continues */
+#define MAX_CHARS 1024 /* Maximum chars on one line */
+
+/* LINE_START must be rounded up to the lowest SHIFT_SIZE */
+#define LINE_START (((-MAX_CHARS - 1) / SHIFT_SIZE) * SHIFT_SIZE \
+ - SHIFT_SIZE)
+#define LINE_END (MAX_CHARS + 1) /* Highest x-coordinate for line */
+
+#define LINE_LEN (XMAX + 1) /* Number of characters on line */
+#define SCREEN_SIZE (XMAX * YMAX) /* Size of I/O buffering */
+#define BLOCK_SIZE 1024
+
+/* Return values of functions */
+#define ERRORS -1
+#define NO_LINE (ERRORS - 1) /* Must be < 0 */
+#define FINE (ERRORS + 1)
+#define NO_INPUT (ERRORS + 2)
+
+#define STD_OUT 1 /* File descriptor for terminal */
+
+#if (CHIP == INTEL)
+#define MEMORY_SIZE (50 * 1024) /* Size of data space to malloc */
+#endif
+
+#define REPORT 2 /* Report change of lines on # lines */
+
+typedef int FLAG;
+
+/* General flags */
+#define FALSE 0
+#define TRUE 1
+#define NOT_VALID 2
+#define VALID 3
+#define OFF 4
+#define ON 5
+
+/* Expression flags */
+#define FORWARD 6
+#define REVERSE 7
+
+/* Yank flags */
+#define SMALLER 8
+#define BIGGER 9
+#define SAME 10
+#define EMPTY 11
+#define NO_DELETE 12
+#define DELETE 13
+#define READ 14
+#define WRITE 15
+
+/*
+ * The Line structure. Each line entry contains a pointer to the next line,
+ * a pointer to the previous line, a pointer to the text and an unsigned char
+ * telling at which offset of the line printing should start (usually 0).
+ */
+struct Line {
+ struct Line *next;
+ struct Line *prev;
+ char *text;
+ unsigned char shift_count;
+};
+
+typedef struct Line LINE;
+
+/* Dummy line indicator */
+#define DUMMY 0x80
+#define DUMMY_MASK 0x7F
+
+/* Expression definitions */
+#define NO_MATCH 0
+#define MATCH 1
+#define REG_ERROR 2
+
+#define BEGIN_LINE (2 * REG_ERROR)
+#define END_LINE (2 * BEGIN_LINE)
+
+/*
+ * The regex structure. Status can be any of 0, BEGIN_LINE or REG_ERROR. In
+ * the last case, the result.err_mess field is assigned. Start_ptr and end_ptr
+ * point to the match found. For more details see the documentation file.
+ */
+struct regex {
+ union {
+ char *err_mess;
+ int *expression;
+ } result;
+ char status;
+ char *start_ptr;
+ char *end_ptr;
+};
+
+typedef struct regex REGEX;
+
+/* NULL definitions */
+#define NIL_PTR ((char *) 0)
+#define NIL_LINE ((LINE *) 0)
+#define NIL_REG ((REGEX *) 0)
+#define NIL_INT ((int *) 0)
+
+/*
+ * Forward declarations
+ */
+extern int nlines; /* Number of lines in file */
+extern LINE *header; /* Head of line list */
+extern LINE *tail; /* Last line in line list */
+extern LINE *top_line; /* First line of screen */
+extern LINE *bot_line; /* Last line of screen */
+extern LINE *cur_line; /* Current line in use */
+extern char *cur_text; /* Pointer to char on current line in use */
+extern int last_y; /* Last y of screen. Usually SCREENMAX */
+extern int ymax;
+extern int screenmax;
+extern char screen[SCREEN_SIZE];/* Output buffer for "writes" and "reads" */
+
+extern int x, y; /* x, y coordinates on screen */
+extern FLAG modified; /* Set when file is modified */
+extern FLAG stat_visible; /* Set if status_line is visible */
+extern FLAG writable; /* Set if file cannot be written */
+extern FLAG quit; /* Set when quit character is typed */
+extern FLAG rpipe; /* Set if file should be read from stdin */
+extern int input_fd; /* Fd for command input */
+extern FLAG loading; /* Set if we're loading a file */
+extern int out_count; /* Index in output buffer */
+extern char file_name[LINE_LEN]; /* Name of file in use */
+extern char text_buffer[MAX_CHARS]; /* Buffer for modifying text */
+extern char *blank_line; /* Clear line to end */
+
+extern char yank_file[]; /* Temp file for buffer */
+extern FLAG yank_status; /* Status of yank_file */
+extern long chars_saved; /* Nr of chars saved in buffer */
+
+/*
+ * Empty output buffer
+ */
+#define clear_buffer() (out_count = 0)
+
+/*
+ * Print character on terminal
+ */
+#define putchar(c) (void) write_char(STD_OUT, (c))
+
+/*
+ * Ring bell on terminal
+ */
+#define ring_bell() putchar('\07')
+
+/*
+ * Print string on terminal
+ */
+#define string_print(str) (void) writeline(STD_OUT, (str))
+
+/*
+ * Flush output buffer
+ */
+#define flush() (void) flush_buffer(STD_OUT)
+
+/*
+ * Convert cnt to nearest tab position
+ */
+#define tab(cnt) (((cnt) + 8) & ~07)
+#define is_tab(c) ((c) == '\t')
+
+/*
+ * Word defenitions
+ */
+#define white_space(c) ((c) == ' ' || (c) == '\t')
+#define alpha(c) ((c) != ' ' && (c) != '\t' && (c) != '\n')
+
+/*
+ * Print line on terminal at offset 0 and clear tail of line
+ */
+#define line_print(line) put_line(line, 0, TRUE)
+
+/*
+ * Move to coordinates and set textp. (Don't use address)
+ */
+#define move_to(nx, ny) move((nx), NIL_PTR, (ny))
+
+/*
+ * Move to coordinates on screen as indicated by textp.
+ */
+#define move_address(address) move(0, (address), y)
+
+/*
+ * Functions handling status_line. ON means in reverse video.
+ */
+#define status_line(str1, str2) (void) bottom_line(ON, (str1), \
+ (str2), NIL_PTR, FALSE)
+#define error(str1, str2) (void) bottom_line(ON, (str1), \
+ (str2), NIL_PTR, FALSE)
+#define get_string(str1,str2, fl) bottom_line(ON, (str1), NIL_PTR, (str2), fl)
+#define clear_status() (void) bottom_line(OFF, NIL_PTR, NIL_PTR, \
+ NIL_PTR, FALSE)
+
+/*
+ * Print info about current file and buffer.
+ */
+#define fstatus(mess, cnt) file_status((mess), (cnt), file_name, \
+ nlines, writable, modified)
+
+/*
+ * Get real shift value.
+ */
+#define get_shift(cnt) ((cnt) & DUMMY_MASK)
+
+#endif /* YMAX */
+
+#ifdef __FreeBSD__
+#define _PROTOTYPE(x,y) x ## y
+#endif
+
+/* mined1.c */
+
+_PROTOTYPE(void FS, (void));
+_PROTOTYPE(void VI, (void));
+_PROTOTYPE(int WT, (void));
+_PROTOTYPE(void XWT, (void));
+_PROTOTYPE(void SH, (void));
+_PROTOTYPE(LINE *proceed, (LINE *line, int count ));
+_PROTOTYPE(int bottom_line, (FLAG revfl, char *s1, char *s2, char *inbuf, FLAG statfl ));
+_PROTOTYPE(int count_chars, (LINE *line ));
+_PROTOTYPE(void move, (int new_x, char *new_address, int new_y ));
+_PROTOTYPE(int find_x, (LINE *line, char *address ));
+_PROTOTYPE(char *find_address, (LINE *line, int x_coord, int *old_x ));
+_PROTOTYPE(int length_of, (char *string ));
+_PROTOTYPE(void copy_string, (char *to, char *from ));
+_PROTOTYPE(void reset, (LINE *head_line, int screen_y ));
+_PROTOTYPE(void set_cursor, (int nx, int ny ));
+_PROTOTYPE(void open_device, (void));
+_PROTOTYPE(int getchar, (void));
+_PROTOTYPE(void display, (int x_coord, int y_coord, LINE *line, int count ));
+_PROTOTYPE(int write_char, (int fd, int c ));
+_PROTOTYPE(int writeline, (int fd, char *text ));
+_PROTOTYPE(void put_line, (LINE *line, int offset, FLAG clear_line ));
+_PROTOTYPE(int flush_buffer, (int fd ));
+_PROTOTYPE(void bad_write, (int fd ));
+_PROTOTYPE(void catch, (int sig ));
+_PROTOTYPE(void abort_mined, (void));
+_PROTOTYPE(void raw_mode, (FLAG state ));
+_PROTOTYPE(void panic, (char *message ));
+_PROTOTYPE(char *alloc, (int bytes ));
+_PROTOTYPE(void free_space, (char *p ));
+/*
+#ifdef UNIX
+_PROTOTYPE(void (*key_map [128]), (void));
+#else
+_PROTOTYPE(void (*key_map [256]), (void));
+#endif
+*/
+_PROTOTYPE(void initialize, (void));
+_PROTOTYPE(char *basename, (char *path ));
+_PROTOTYPE(void load_file, (char *file ));
+_PROTOTYPE(int get_line, (int fd, char *buffer ));
+_PROTOTYPE(LINE *install_line, (char *buffer, int length ));
+_PROTOTYPE(void main, (int argc, char *argv []));
+_PROTOTYPE(void RD, (void));
+_PROTOTYPE(void I, (void));
+_PROTOTYPE(void XT, (void));
+_PROTOTYPE(void ESC, (void));
+_PROTOTYPE(int ask_save, (void));
+_PROTOTYPE(int line_number, (void));
+_PROTOTYPE(void file_status, (char *message, long count, char *file, int lines,
+ FLAG writefl, FLAG changed ));
+#if __STDC__
+void build_string(char *buf, char *fmt, ...);
+#else
+void build_string();
+#endif
+_PROTOTYPE(char *num_out, (long number ));
+_PROTOTYPE(int get_number, (char *message, int *result ));
+_PROTOTYPE(int input, (char *inbuf, FLAG clearfl ));
+_PROTOTYPE(int get_file, (char *message, char *file ));
+_PROTOTYPE(int _getchar, (void));
+_PROTOTYPE(void _flush, (void));
+_PROTOTYPE(void _putchar, (int c ));
+_PROTOTYPE(void get_term, (void));
+
+/* mined2.c */
+
+_PROTOTYPE(void UP, (void));
+_PROTOTYPE(void DN, (void));
+_PROTOTYPE(void LF, (void));
+_PROTOTYPE(void RT, (void));
+_PROTOTYPE(void HIGH, (void));
+_PROTOTYPE(void LOW, (void));
+_PROTOTYPE(void BL, (void));
+_PROTOTYPE(void EL, (void));
+_PROTOTYPE(void GOTO, (void));
+_PROTOTYPE(void HLP, (void));
+_PROTOTYPE(void PD, (void));
+_PROTOTYPE(void PU, (void));
+_PROTOTYPE(void HO, (void));
+_PROTOTYPE(void EF, (void));
+_PROTOTYPE(void SU, (void));
+_PROTOTYPE(void SD, (void));
+_PROTOTYPE(int forward_scroll, (void));
+_PROTOTYPE(int reverse_scroll, (void));
+_PROTOTYPE(void MP, (void));
+_PROTOTYPE(void move_previous_word, (FLAG remove ));
+_PROTOTYPE(void MN, (void));
+_PROTOTYPE(void move_next_word, (FLAG remove ));
+_PROTOTYPE(void DCC, (void));
+_PROTOTYPE(void DPC, (void));
+_PROTOTYPE(void DLN, (void));
+_PROTOTYPE(void DNW, (void));
+_PROTOTYPE(void DPW, (void));
+_PROTOTYPE(void S, (int character ));
+_PROTOTYPE(void CTL, (void));
+_PROTOTYPE(void LIB, (void));
+_PROTOTYPE(LINE *line_insert, (LINE *line, char *string, int len ));
+_PROTOTYPE(int insert, (LINE *line, char *location, char *string ));
+_PROTOTYPE(LINE *line_delete, (LINE *line ));
+_PROTOTYPE(void delete, (LINE *start_line, char *start_textp, LINE *end_line, char *end_textp ));
+_PROTOTYPE(void PT, (void));
+_PROTOTYPE(void IF, (void));
+_PROTOTYPE(void file_insert, (int fd, FLAG old_pos ));
+_PROTOTYPE(void WB, (void));
+_PROTOTYPE(void MA, (void));
+_PROTOTYPE(void YA, (void));
+_PROTOTYPE(void DT, (void));
+_PROTOTYPE(void set_up, (FLAG remove ));
+_PROTOTYPE(FLAG checkmark, (void));
+_PROTOTYPE(int legal, (void));
+_PROTOTYPE(void yank, (LINE *start_line, char *start_textp, LINE *end_line, char *end_textp, FLAG remove ));
+_PROTOTYPE(int scratch_file, (FLAG mode ));
+_PROTOTYPE(void SF, (void));
+_PROTOTYPE(void SR, (void));
+_PROTOTYPE(REGEX *get_expression, (char *message ));
+_PROTOTYPE(void GR, (void));
+_PROTOTYPE(void LR, (void));
+_PROTOTYPE(void change, (char *message, FLAG file ));
+_PROTOTYPE(char *substitute, (LINE *line, REGEX *program, char *replacement ));
+_PROTOTYPE(void search, (char *message, FLAG method ));
+_PROTOTYPE(int find_y, (LINE *match_line ));
+_PROTOTYPE(void finished, (REGEX *program, int *last_exp ));
+_PROTOTYPE(void compile, (char *pattern, REGEX *program ));
+_PROTOTYPE(LINE *match, (REGEX *program, char *string, FLAG method ));
+_PROTOTYPE(int line_check, (REGEX *program, char *string, FLAG method ));
+_PROTOTYPE(int check_string, (REGEX *program, char *string, int *expression ));
+_PROTOTYPE(int star, (REGEX *program, char *end_position, char *string, int *expression ));
+_PROTOTYPE(int in_list, (int *list, int c, int list_length, int opcode ));
+_PROTOTYPE(void dummy_line, (void));
diff --git a/release/picobsd/tinyware/mined/mined1.c b/release/picobsd/tinyware/mined/mined1.c
new file mode 100644
index 000000000000..aff7c9c60df8
--- /dev/null
+++ b/release/picobsd/tinyware/mined/mined1.c
@@ -0,0 +1,2025 @@
+/*
+ * Part one of the mined editor.
+ */
+
+/*
+ * Ported to FreeBSD by Andrzej Bialecki <abial@freebsd.org>, Oct 1998
+ *
+ * Added a help screen, and remapped some of the wildest keybindings...
+ */
+
+/*
+ * Author: Michiel Huisjes.
+ *
+ * 1. General remarks.
+ *
+ * Mined is a screen editor designed for the MINIX operating system.
+ * It is meant to be used on files not larger than 50K and to be fast.
+ * When mined starts up, it reads the file into its memory to minimize
+ * disk access. The only time that disk access is needed is when certain
+ * save, write or copy commands are given.
+ *
+ * Mined has the style of Emacs or Jove, that means that there are no modes.
+ * Each character has its own entry in an 256 pointer to function array,
+ * which is called when that character is typed. Only ASCII characters are
+ * connected with a function that inserts that character at the current
+ * location in the file. Two execptions are <linefeed> and <tab> which are
+ * inserted as well. Note that the mapping between commands and functions
+ * called is implicit in the table. Changing the mapping just implies
+ * changing the pointers in this table.
+ *
+ * The display consists of SCREENMAX + 1 lines and XMAX + 1 characters. When
+ * a line is larger (or gets larger during editing) than XBREAK characters,
+ * the line is either shifted SHIFT_SIZE characters to the left (which means
+ * that the first SHIFT_SIZE characters are not printed) or the end of the
+ * line is marked with the SHIFT_MARK character and the rest of the line is
+ * not printed. A line can never exceed MAX_CHARS characters. Mined will
+ * always try to keep the cursor on the same line and same (relative)
+ * x-coordinate if nothing changed. So if you scroll one line up, the cursor
+ * stays on the same line, or when you move one line down, the cursor will
+ * move to the same place on the line as it was on the previous.
+ * Every character on the line is available for editing including the
+ * linefeed at the the of the line. When the linefeed is deleted, the current
+ * line and the next line are joined. The last character of the file (which
+ * is always a linefeed) can never be deleted.
+ * The bottomline (as indicated by YMAX + 1) is used as a status line during
+ * editing. This line is usually blank or contains information mined needs
+ * during editing. This information (or rather questions) is displayed in
+ * reverse video.
+ *
+ * The terminal modes are changed completely. All signals like start/stop,
+ * interrupt etc. are unset. The only signal that remains is the quit signal.
+ * The quit signal (^\) is the general abort signal for mined. Typing a ^\
+ * during searching or when mined is asking for filenames, etc. will abort
+ * the function and mined will return to the main loop. Sending a quit
+ * signal during the main loop will abort the session (after confirmation)
+ * and the file is not (!) saved.
+ * The session will also be aborted when an unrecoverable error occurs. E.g
+ * when there is no more memory available. If the file has been modified,
+ * mined will ask if the file has to be saved or not.
+ * If there is no more space left on the disk, mined will just give an error
+ * message and continue.
+ *
+ * The number of system calls are minized. This is done to keep the editor
+ * as fast as possible. I/O is done in SCREEN_SIZE reads/writes. Accumulated
+ * output is also flushed at the end of each character typed.
+ *
+ * 2. Regular expressions
+ *
+ * Mined has a build in regular expression matcher, which is used for
+ * searching and replace routines. A regular expression consists of a
+ * sequence of:
+ *
+ * 1. A normal character matching that character.
+ * 2. A . matching any character.
+ * 3. A ^ matching the begin of a line.
+ * 4. A $ (as last character of the pattern) mathing the end of a line.
+ * 5. A \<character> matching <character>.
+ * 6. A number of characters enclosed in [] pairs matching any of these
+ * characters. A list of characters can be indicated by a '-'. So
+ * [a-z] matches any letter of the alphabet. If the first character
+ * after the '[' is a '^' then the set is negated (matching none of
+ * the characters).
+ * A ']', '^' or '-' can be escaped by putting a '\' in front of it.
+ * Of course this means that a \ must be represented by \\.
+ * 7. If one of the expressions as described in 1-6 is followed by a
+ * '*' than that expressions matches a sequence of 0 or more of
+ * that expression.
+ *
+ * Parsing of regular expression is done in two phases. In the first phase
+ * the expression is compiled into a more comprehensible form. In the second
+ * phase the actual matching is done. For more details see 3.6.
+ *
+ *
+ * 3. Implementation of mined.
+ *
+ * 3.1 Data structures.
+ *
+ * The main data structures are as follows. The whole file is kept in a
+ * double linked list of lines. The LINE structure looks like this:
+ *
+ * typedef struct Line {
+ * struct Line *next;
+ * struct Line *prev;
+ * char *text;
+ * unsigned char shift_count;
+ * } LINE;
+ *
+ * Each line entry contains a pointer to the next line, a pointer to the
+ * previous line and a pointer to the text of that line. A special field
+ * shift_count contains the number of shifts (in units of SHIFT_SIZE)
+ * that is performed on that line. The total size of the structure is 7
+ * bytes so a file consisting of 1000 empty lines will waste a lot of
+ * memory. A LINE structure is allocated for each line in the file. After
+ * that the number of characters of the line is counted and sufficient
+ * space is allocated to store them (including a linefeed and a '\0').
+ * The resulting address is assigned to the text field in the structure.
+ *
+ * A special structure is allocated and its address is assigned to the
+ * variable header as well as the variable tail. The text field of this
+ * structure is set to NIL_PTR. The tail->prev of this structure points
+ * to the last LINE of the file and the header->next to the first LINE.
+ * Other LINE *variables are top_line and bot_line which point to the
+ * first line resp. the last line on the screen.
+ * Two other variables are important as well. First the LINE *cur_line,
+ * which points to the LINE currently in use and the char *cur_text,
+ * which points to the character at which the cursor stands.
+ * Whenever an ASCII character is typed, a new line is build with this
+ * character inserted. Then the old data space (pointed to by
+ * cur_line->text) is freed, data space for the new line is allocated and
+ * assigned to cur_line->text.
+ *
+ * Two global variables called x and y represent the x and y coordinates
+ * from the cursor. The global variable nlines contains the number of
+ * lines in the file. Last_y indicates the maximum y coordinate of the
+ * screen (which is usually SCREENMAX).
+ *
+ * A few strings must be initialized by hand before compiling mined.
+ * These string are enter_string, which is printed upon entering mined,
+ * rev_video (turn on reverse video), normal_video, rev_scroll (perform a
+ * reverse scroll) and pos_string. The last string should hold the
+ * absolute position string to be printed for cursor motion. The #define
+ * X_PLUS and Y_PLUS should contain the characters to be added to the
+ * coordinates x and y (both starting at 0) to finish cursor positioning.
+ *
+ * 3.2 Starting up.
+ *
+ * Mined can be called with or without argument and the function
+ * load_file () is called with these arguments. load_file () checks
+ * if the file exists if it can be read and if it is writable and
+ * sets the writable flag accordingly. If the file can be read,
+ * load_file () reads a line from the file and stores this line into
+ * a structure by calling install_line () and line_insert () which
+ * installs the line into the double linked list, until the end of the
+ * file is reached.
+ * Lines are read by the function get_line (), which buffers the
+ * reading in blocks of SCREEN_SIZE. Load_file () also initializes the
+ * LINE *variables described above.
+ *
+ * 3.3 Moving around.
+ *
+ * Several commands are implemented for moving through the file.
+ * Moving up (UP), down (DN) left (LF) and right (RT) are done by the
+ * arrow keys. Moving one line below the screen scrolls the screen one
+ * line up. Moving one line above the screen scrolls the screen one line
+ * down. The functions forward_scroll () and reverse_scroll () take care
+ * of that.
+ * Several other move functions exist: move to begin of line (BL), end of
+ * line (EL) top of screen (HIGH), bottom of screen (LOW), top of file
+ * (HO), end of file (EF), scroll one page down (PD), scroll one page up
+ * (PU), scroll one line down (SD), scroll one line up (SU) and move to a
+ * certain line number (GOTO).
+ * Two functions called MN () and MP () each move one word further or
+ * backwards. A word is a number of non-blanks seperated by a space, a
+ * tab or a linefeed.
+ *
+ * 3.4 Modifying text.
+ *
+ * The modifying commands can be separated into two modes. The first
+ * being inserting text, and the other deleting text. Two functions are
+ * created for these purposes: insert () and delete (). Both are capable
+ * of deleting or inserting large amounts of text as well as one
+ * character. Insert () must be given the line and location at which
+ * the text must be inserted. Is doesn't make any difference whether this
+ * text contains linefeeds or not. Delete () must be given a pointer to
+ * the start line, a pointer from where deleting should start on that
+ * line and the same information about the end position. The last
+ * character of the file will never be deleted. Delete () will make the
+ * necessary changes to the screen after deleting, but insert () won't.
+ * The functions for modifying text are: insert one char (S), insert a
+ * file (file_insert (fd)), insert a linefeed and put cursor back to
+ * end of line (LIB), delete character under the cursor (DCC), delete
+ * before cursor (even linefeed) (DPC), delete next word (DNW), delete
+ * previous word (DPC) and delete to end of line (if the cursor is at
+ * a linefeed delete line) (DLN).
+ *
+ * 3.5 Yanking.
+ *
+ * A few utilities are provided for yanking pieces of text. The function
+ * MA () marks the current position in the file. This is done by setting
+ * LINE *mark_line and char *mark_text to the current position. Yanking
+ * of text can be done in two modes. The first mode just copies the text
+ * from the mark to the current position (or visa versa) into a buffer
+ * (YA) and the second also deletes the text (DT). Both functions call
+ * the function set_up () with the delete flag on or off. Set_up ()
+ * checks if the marked position is still a valid one (by using
+ * check_mark () and legal ()), and then calls the function yank () with
+ * a start and end position in the file. This function copies the text
+ * into a scratch_file as indicated by the variable yank_file. This
+ * scratch_file is made uniq by the function scratch_file (). At the end
+ * of copying yank will (if necessary) delete the text. A global flag
+ * called yank_status keeps track of the buffer (or file) status. It is
+ * initialized on NOT_VALID and set to EMPTY (by set_up ()) or VALID (by
+ * yank ()). Several things can be done with the buffer. It can be
+ * inserted somewhere else in the file (PT) or it can be copied into
+ * another file (WB), which will be prompted for.
+ *
+ * 3.6 Search and replace routines.
+ *
+ * Searching for strings and replacing strings are done by regular
+ * expressions. For any expression the function compile () is called
+ * with as argument the expression to compile. Compile () returns a
+ * pointer to a structure which looks like this:
+ *
+ * typedef struct regex {
+ * union {
+ * char *err_mess;
+ * int *expression;
+ * } result;
+ * char status;
+ * char *start_ptr;
+ * char *end_ptr;
+ * } REGEX;
+ *
+ * If something went wrong during compiling (e.g. an illegal expression
+ * was given), the function reg_error () is called, which sets the status
+ * field to REG_ERROR and the err_mess field to the error message. If the
+ * match must be anchored at the beginning of the line (end of line), the
+ * status field is set to BEGIN_LINE (END_LINE). If none of these special
+ * cases are true, the field is set to 0 and the function finished () is
+ * called. Finished () allocates space to hold the compiled expression
+ * and copies this expression into the expression field of the union
+ * (bcopy ()). Matching is done by the routines match() and line_check().
+ * Match () takes as argument the REGEX *program, a pointer to the
+ * startposition on the current line, and a flag indicating FORWARD or
+ * REVERSE search. Match () checks out the whole file until a match is
+ * found. If match is found it returns a pointer to the line in which the
+ * match was found else it returns a NIL_LINE. Line_check () takes the
+ * same arguments, but return either MATCH or NO_MATCH.
+ * During checking, the start_ptr and end_ptr fields of the REGEX
+ * structure are assigned to the start and end of the match.
+ * Both functions try to find a match by walking through the line
+ * character by character. For each possibility, the function
+ * check_string () is called with as arguments the REGEX *program and the
+ * string to search in. It starts walking through the expression until
+ * the end of the expression or the end of the string is reached.
+ * Whenever a * is encountered, this position of the string is marked,
+ * the maximum number of matches are performed and the function star ()
+ * is called in order to try to find the longest match possible. Star ()
+ * takes as arguments the REGEX program, the current position of the
+ * string, the marked position and the current position of the expression
+ * Star () walks from the current position of the string back to the
+ * marked position, and calls string_check () in order to find a match.
+ * It returns MATCH or NO_MATCH, just as string_check () does.
+ * Searching is now easy. Both search routines (forward (SF) and
+ * backwards search (SR)) call search () with an apropiate message and a
+ * flag indicating FORWARD or REVERSE search. Search () will get an
+ * expression from the user by calling get_expression(). Get_expression()
+ * returns a pointer to a REGEX structure or NIL_REG upon errors and
+ * prompts for the expression. If no expression if given, the previous is
+ * used instead. After that search will call match (), and if a match is
+ * found, we can move to that place in the file by the functions find_x()
+ * and find_y () which will find display the match on the screen.
+ * Replacing can be done in two ways. A global replace (GR) or a line
+ * replace (LR). Both functions call change () with a message an a flag
+ * indicating global or line replacement. Change () will prompt for the
+ * expression and for the replacement. Every & in the replacement pattern
+ * means substitute the match instead. An & can be escaped by a \. When
+ * a match is found, the function substitute () will perform the
+ * substitution.
+ *
+ * 3.6 Miscellaneous commands.
+ *
+ * A few commands haven't be discussed yet. These are redraw the screen
+ * (RD) fork a shell (SH), print file status (FS), write file to disc
+ * (WT), insert a file at current position (IF), leave editor (XT) and
+ * visit another file (VI). The last two functions will check if the file
+ * has been modified. If it has, they will ask if you want to save the
+ * file by calling ask_save ().
+ * The function ESC () will repeat a command n times. It will prompt for
+ * the number. Aborting the loop can be done by sending the ^\ signal.
+ *
+ * 3.7 Utility functions.
+ *
+ * Several functions exists for internal use. First allocation routines:
+ * alloc (bytes) and newline () will return a pointer to free data space
+ * if the given size. If there is no more memory available, the function
+ * panic () is called.
+ * Signal handling: The only signal that can be send to mined is the
+ * SIGQUIT signal. This signal, functions as a general abort command.
+ * Mined will abort if the signal is given during the main loop. The
+ * function abort_mined () takes care of that.
+ * Panic () is a function with as argument a error message. It will print
+ * the message and the error number set by the kernel (errno) and will
+ * ask if the file must be saved or not. It resets the terminal
+ * (raw_mode ()) and exits.
+ * String handling routines like copy_string(to, from), length_of(string)
+ * and build_string (buffer, format, arg1, arg2, ...). The latter takes
+ * a description of the string out out the format field and puts the
+ * result in the buffer. (It works like printf (3), but then into a
+ * string). The functions status_line (string1, string2), error (string1,
+ * string2), clear_status () and bottom_line () all print information on
+ * the status line.
+ * Get_string (message, buffer) reads a string and getchar () reads one
+ * character from the terminal.
+ * Num_out ((long) number) prints the number into a 11 digit field
+ * without leading zero's. It returns a pointer to the resulting string.
+ * File_status () prints all file information on the status line.
+ * Set_cursor (x, y) prints the string to put the cursor at coordinates
+ * x and y.
+ * Output is done by four functions: writeline(fd,string), clear_buffer()
+ * write_char (fd, c) and flush_buffer (fd). Three defines are provided
+ * to write on filedescriptor STD_OUT (terminal) which is used normally:
+ * string_print (string), putchar (c) and flush (). All these functions
+ * use the global I/O buffer screen and the global index for this array
+ * called out_count. In this way I/O can be buffered, so that reads or
+ * writes can be done in blocks of SCREEN_SIZE size.
+ * The following functions all handle internal line maintenance. The
+ * function proceed (start_line, count) returns the count'th line after
+ * start_line. If count is negative, the count'th line before the
+ * start_line is returned. If header or tail is encountered then that
+ * will be returned. Display (x, y, start_line, count) displays count
+ * lines starting at coordinates [x, y] and beginning at start_line. If
+ * the header or tail is encountered, empty lines are displayed instead.
+ * The function reset (head_line, ny) reset top_line, last_y, bot_line,
+ * cur_line and y-coordinate. This is not a neat way to do the
+ * maintenance, but it sure saves a lot of code. It is usually used in
+ * combination with display ().
+ * Put_line(line, offset, clear_line), prints a line (skipping characters
+ * according to the line->shift_size field) until XBREAK - offset
+ * characters are printed or a '\n' is encountered. If clear_line is
+ * TRUE, spaces are printed until XBREAK - offset characters.
+ * Line_print (line) is a #define from put_line (line, 0, TRUE).
+ * Moving is done by the functions move_to (x, y), move_addres (address)
+ * and move (x, adress, y). This function is the most important one in
+ * mined. New_y must be between 0 and last_y, new_x can be about
+ * anything, address must be a pointer to an character on the current
+ * line (or y). Move_to () first adjust the y coordinate together with
+ * cur_line. If an address is given, it finds the corresponding
+ * x-coordinate. If an new x-coordinate was given, it will try to locate
+ * the corresponding character. After that it sets the shift_count field
+ * of cur_line to an apropiate number according to new_x. The only thing
+ * left to do now is to assign the new values to cur_line, cur_text, x
+ * and y.
+ *
+ * 4. Summary of commands.
+ *
+ * CURSOR MOTION
+ * up-arrow Move cursor 1 line up. At top of screen, reverse scroll
+ * down-arrow Move cursor 1 line down. At bottom, scroll forward.
+ * left-arrow Move cursor 1 character left or to end of previous line
+ * right-arrow Move cursor 1 character right or to start of next line
+ * CTRL-A Move cursor to start of current line
+ * CTRL-Z Move cursor to end of current line
+ * CTRL-^ Move cursor to top of screen
+ * CTRL-_ Move cursor to bottom of screen
+ * CTRL-F Forward to start of next word (even to next line)
+ * CTRL-B Backward to first character of previous word
+ *
+ * SCREEN MOTION
+ * Home key Move cursor to first character of file
+ * End key Move cursor to last character of file
+ * PgUp Scroll backward 1 page. Bottom line becomes top line
+ * PgD Scroll backward 1 page. Top line becomes bottom line
+ * CTRL-D Scroll screen down one line (reverse scroll)
+ * CTRL-U Scroll screen up one line (forward scroll)
+ *
+ * MODIFYING TEXT
+ * ASCII char Self insert character at cursor
+ * tab Insert tab at cursor
+ * backspace Delete the previous char (left of cursor), even line feed
+ * Del Delete the character under the cursor
+ * CTRL-N Delete next word
+ * CTRL-P Delete previous word
+ * CTRL-O Insert line feed at cursor and back up 1 character
+ * CTRL-T Delete tail of line (cursor to end); if empty, delete line
+ * CTRL-@ Set the mark (remember the current location)
+ * CTRL-K Delete text from the mark to current position save on file
+ * CTRL-C Save the text from the mark to the current position
+ * CTRL-Y Insert the contents of the save file at current position
+ * CTRL-Q Insert the contents of the save file into a new file
+ * CTRL-G Insert a file at the current position
+ *
+ * MISCELLANEOUS
+ * CTRL-E Erase and redraw the screen
+ * CTRL-V Visit file (read a new file); complain if old one changed
+ * CTRL-W Write the current file back to the disk
+ * numeric + Search forward (prompt for regular expression)
+ * numeric - Search backward (prompt for regular expression)
+ * numeric 5 Print the current status of the file
+ * CTRL-R (Global) Replace str1 by str2 (prompts for each string)
+ * CTRL-L (Line) Replace string1 by string2
+ * CTRL-S Fork off a shell and wait for it to finish
+ * CTRL-X EXIT (prompt if file modified)
+ * CTRL-] Go to a line. Prompts for linenumber
+ * CTRL-\ Abort whatever editor was doing and start again
+ * escape key Repeat a command count times; (prompts for count)
+ */
+
+/* ======================================================================== *
+ * Utilities *
+ * ======================================================================== */
+
+#include "mined.h"
+#include <signal.h>
+#include <termios.h>
+#include <limits.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <sys/ioctl.h>
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+extern int errno;
+int ymax = YMAX;
+int screenmax = SCREENMAX;
+
+
+/*
+ * Print file status.
+ */
+void FS()
+{
+ fstatus(file_name[0] ? "" : "[buffer]", -1L);
+}
+
+/*
+ * Visit (edit) another file. If the file has been modified, ask the user if
+ * he wants to save it.
+ */
+void VI()
+{
+ char new_file[LINE_LEN]; /* Buffer to hold new file name */
+
+ if (modified == TRUE && ask_save() == ERRORS)
+ return;
+
+/* Get new file name */
+ if (get_file("Visit file:", new_file) == ERRORS)
+ return;
+
+/* Free old linked list, initialize global variables and load new file */
+ initialize();
+#ifdef UNIX
+ tputs(CL, 0, _putchar);
+#else
+ string_print (enter_string);
+#endif /* UNIX */
+ load_file(new_file[0] == '\0' ? NIL_PTR : new_file);
+}
+
+/*
+ * Write file in core to disc.
+ */
+int WT()
+{
+ register LINE *line;
+ register long count = 0L; /* Nr of chars written */
+ char file[LINE_LEN]; /* Buffer for new file name */
+ int fd; /* Filedescriptor of file */
+
+ if (modified == FALSE) {
+ error ("Write not necessary.", NIL_PTR);
+ return FINE;
+ }
+
+/* Check if file_name is valid and if file can be written */
+ if (file_name[0] == '\0' || writable == FALSE) {
+ if (get_file("Enter file name:", file) != FINE)
+ return ERRORS;
+ copy_string(file_name, file); /* Save file name */
+ }
+ if ((fd = creat(file_name, 0644)) < 0) { /* Empty file */
+ error("Cannot create ", file_name);
+ writable = FALSE;
+ return ERRORS;
+ }
+ else
+ writable = TRUE;
+
+ clear_buffer();
+
+ status_line("Writing ", file_name);
+ for (line = header->next; line != tail; line = line->next) {
+ if (line->shift_count & DUMMY) {
+ if (line->next == tail && line->text[0] == '\n')
+ continue;
+ }
+ if (writeline(fd, line->text) == ERRORS) {
+ count = -1L;
+ break;
+ }
+ count += (long) length_of(line->text);
+ }
+
+ if (count > 0L && flush_buffer(fd) == ERRORS)
+ count = -1L;
+
+ (void) close(fd);
+
+ if (count == -1L)
+ return ERRORS;
+
+ modified = FALSE;
+ rpipe = FALSE; /* File name is now assigned */
+
+/* Display how many chars (and lines) were written */
+ fstatus("Wrote", count);
+ return FINE;
+}
+
+/* Call WT and discard value returned. */
+void XWT()
+{
+ (void) WT();
+}
+
+
+
+/*
+ * Call an interactive shell.
+ */
+void SH()
+{
+ register int w;
+ int pid, status;
+ char *shell;
+
+ if ((shell = getenv("SHELL")) == NIL_PTR) shell = "/bin/sh";
+
+ switch (pid = fork()) {
+ case -1: /* Error */
+ error("Cannot fork.", NIL_PTR);
+ return;
+ case 0: /* This is the child */
+ set_cursor(0, ymax);
+ putchar('\n');
+ flush();
+ raw_mode(OFF);
+ if (rpipe) { /* Fix stdin */
+ close (0);
+ if (open("/dev/tty", 0) < 0)
+ exit (126);
+ }
+ execl(shell, shell, (char *) 0);
+ exit(127); /* Exit with 127 */
+ default : /* This is the parent */
+ signal(SIGINT, SIG_IGN);
+ signal(SIGQUIT, SIG_IGN);
+ do {
+ w = wait(&status);
+ } while (w != -1 && w != pid);
+ }
+
+ raw_mode(ON);
+ RD();
+
+ if ((status >> 8) == 127) /* Child died with 127 */
+ error("Cannot exec ", shell);
+ else if ((status >> 8) == 126)
+ error("Cannot open /dev/tty as fd #0", NIL_PTR);
+}
+
+/*
+ * Proceed returns the count'th line after `line'. When count is negative
+ * it returns the count'th line before `line'. When the next (previous)
+ * line is the tail (header) indicating EOF (tof) it stops.
+ */
+LINE *proceed(line, count)
+register LINE *line;
+register int count;
+{
+ if (count < 0)
+ while (count++ < 0 && line != header)
+ line = line->prev;
+ else
+ while (count-- > 0 && line != tail)
+ line = line->next;
+ return line;
+}
+
+/*
+ * Show concatenation of s1 and s2 on the status line (bottom of screen)
+ * If revfl is TRUE, turn on reverse video on both strings. Set stat_visible
+ * only if bottom_line is visible.
+ */
+int bottom_line(revfl, s1, s2, inbuf, statfl)
+FLAG revfl;
+char *s1, *s2;
+char *inbuf;
+FLAG statfl;
+{
+ int ret = FINE;
+ char buf[LINE_LEN];
+ register char *p = buf;
+
+ *p++ = ' ';
+ if (s1 != NIL_PTR)
+ while (*p = *s1++)
+ p++;
+ if (s2 != NIL_PTR)
+ while (*p = *s2++)
+ p++;
+ *p++ = ' ';
+ *p++ = 0;
+
+ if (revfl == ON && stat_visible == TRUE)
+ clear_status ();
+ set_cursor(0, ymax);
+ if (revfl == ON) { /* Print rev. start sequence */
+#ifdef UNIX
+ tputs(SO, 0, _putchar);
+#else
+ string_print(rev_video);
+#endif /* UNIX */
+ stat_visible = TRUE;
+ }
+ else /* Used as clear_status() */
+ stat_visible = FALSE;
+
+ string_print(buf);
+
+ if (inbuf != NIL_PTR)
+ ret = input(inbuf, statfl);
+
+ /* Print normal video */
+#ifdef UNIX
+ tputs(SE, 0, _putchar);
+ tputs(CE, 0, _putchar);
+#else
+ string_print(normal_video);
+ string_print(blank_line); /* Clear the rest of the line */
+#endif /* UNIX */
+ if (inbuf != NIL_PTR)
+ set_cursor(0, ymax);
+ else
+ set_cursor(x, y); /* Set cursor back to old position */
+ flush(); /* Perform the actual write */
+ if (ret != FINE)
+ clear_status();
+ return ret;
+}
+
+/*
+ * Count_chars() count the number of chars that the line would occupy on the
+ * screen. Counting starts at the real x-coordinate of the line.
+ */
+int count_chars(line)
+LINE *line;
+{
+ register int cnt = get_shift(line->shift_count) * -SHIFT_SIZE;
+ register char *textp = line->text;
+
+/* Find begin of line on screen */
+ while (cnt < 0) {
+ if (is_tab(*textp++))
+ cnt = tab(cnt);
+ else
+ cnt++;
+ }
+
+/* Count number of chars left */
+ cnt = 0;
+ while (*textp != '\n') {
+ if (is_tab(*textp++))
+ cnt = tab(cnt);
+ else
+ cnt++;
+ }
+ return cnt;
+}
+
+/*
+ * Move to coordinates nx, ny at screen. The caller must check that scrolling
+ * is not needed.
+ * If new_x is lower than 0 or higher than XBREAK, move_to() will check if
+ * the line can be shifted. If it can it sets(or resets) the shift_count field
+ * of the current line accordingly.
+ * Move also sets cur_text to the right char.
+ * If we're moving to the same x coordinate, try to move the the x-coordinate
+ * used on the other previous call.
+ */
+void move(new_x, new_address, new_y)
+register int new_x;
+int new_y;
+char *new_address;
+{
+ register LINE *line = cur_line; /* For building new cur_line */
+ int shift = 0; /* How many shifts to make */
+ static int rel_x = 0; /* Remember relative x position */
+ int tx = x;
+
+/* Check for illegal values */
+ if (new_y < 0 || new_y > last_y)
+ return;
+
+/* Adjust y-coordinate and cur_line */
+ if (new_y < y)
+ while (y != new_y) {
+ if(line->shift_count>0) {
+ line->shift_count=0;
+ move_to(0,y);
+ string_print(blank_line);
+ line_print(line);
+ }
+ y--;
+ line = line->prev;
+ }
+ else
+ while (y != new_y) {
+ if(line->shift_count>0) {
+ line->shift_count=0;
+ move_to(0,y);
+ string_print(blank_line);
+ line_print(line);
+ }
+ y++;
+ line = line->next;
+ }
+
+/* Set or unset relative x-coordinate */
+ if (new_address == NIL_PTR) {
+ new_address = find_address(line, (new_x == x) ? rel_x : new_x , &tx);
+ if (new_x != x)
+ rel_x = tx;
+ new_x = tx;
+ }
+ else {
+ rel_x = new_x = find_x(line, new_address);
+ }
+
+/* Adjust shift_count if new_x lower than 0 or higher than XBREAK */
+ if (new_x < 0 || new_x >= XBREAK) {
+ if (new_x > XBREAK || (new_x == XBREAK && *new_address != '\n'))
+ shift = (new_x - XBREAK) / SHIFT_SIZE + 1;
+ else {
+ shift = new_x / SHIFT_SIZE;
+ if (new_x % SHIFT_SIZE)
+ shift--;
+ }
+
+ if (shift != 0) {
+ line->shift_count += shift;
+ new_x = find_x(line, new_address);
+ set_cursor(0, y);
+ line_print(line);
+ rel_x = new_x;
+ }
+ }
+
+/* Assign and position cursor */
+ x = new_x;
+ cur_text = new_address;
+ cur_line = line;
+ set_cursor(x, y);
+}
+
+/*
+ * Find_x() returns the x coordinate belonging to address.
+ * (Tabs are expanded).
+ */
+int find_x(line, address)
+LINE *line;
+char *address;
+{
+ register char *textp = line->text;
+ register int nx = get_shift(line->shift_count) * -SHIFT_SIZE;
+
+ while (textp != address && *textp != '\0') {
+ if (is_tab(*textp++)) /* Expand tabs */
+ nx = tab(nx);
+ else
+ nx++;
+ }
+ return nx;
+}
+
+/*
+ * Find_address() returns the pointer in the line with offset x_coord.
+ * (Tabs are expanded).
+ */
+char *find_address(line, x_coord, old_x)
+LINE *line;
+int x_coord;
+int *old_x;
+{
+ register char *textp = line->text;
+ register int tx = get_shift(line->shift_count) * -SHIFT_SIZE;
+
+ while (tx < x_coord && *textp != '\n') {
+ if (is_tab(*textp)) {
+ if (*old_x - x_coord == 1 && tab(tx) > x_coord)
+ break; /* Moving left over tab */
+ else
+ tx = tab(tx);
+ }
+ else
+ tx++;
+ textp++;
+ }
+
+ *old_x = tx;
+ return textp;
+}
+
+/*
+ * Length_of() returns the number of characters int the string `string'
+ * excluding the '\0'.
+ */
+int length_of(string)
+register char *string;
+{
+ register int count = 0;
+
+ if (string != NIL_PTR) {
+ while (*string++ != '\0')
+ count++;
+ }
+ return count;
+}
+
+/*
+ * Copy_string() copies the string `from' into the string `to'. `To' must be
+ * long enough to hold `from'.
+ */
+void copy_string(to, from)
+register char *to;
+register char *from;
+{
+ while (*to++ = *from++)
+ ;
+}
+
+/*
+ * Reset assigns bot_line, top_line and cur_line according to `head_line'
+ * which must be the first line of the screen, and an y-coordinate,
+ * which will be the current y-coordinate (if it isn't larger than last_y)
+ */
+void reset(head_line, screen_y)
+LINE *head_line;
+int screen_y;
+{
+ register LINE *line;
+
+ top_line = line = head_line;
+
+/* Search for bot_line (might be last line in file) */
+ for (last_y = 0; last_y < nlines - 1 && last_y < screenmax
+ && line->next != tail; last_y++)
+ line = line->next;
+
+ bot_line = line;
+ y = (screen_y > last_y) ? last_y : screen_y;
+
+/* Set cur_line according to the new y value */
+ cur_line = proceed(top_line, y);
+}
+
+/*
+ * Set cursor at coordinates x, y.
+ */
+void set_cursor(nx, ny)
+int nx, ny;
+{
+#ifdef UNIX
+ extern char *tgoto();
+
+ tputs(tgoto(CM, nx, ny), 0, _putchar);
+#else
+ char text_buffer[10];
+
+ build_string(text_buffer, pos_string, ny+1, nx+1);
+ string_print(text_buffer);
+#endif /* UNIX */
+}
+
+/*
+ * Routine to open terminal when mined is used in a pipeline.
+ */
+void open_device()
+{
+ if ((input_fd = open("/dev/tty", 0)) < 0)
+ panic("Cannot open /dev/tty for read");
+}
+
+/*
+ * Getchar() reads one character from the terminal. The character must be
+ * masked with 0377 to avoid sign extension.
+ */
+int getchar()
+{
+#ifdef UNIX
+ return (_getchar() & 0377);
+#else
+ char c;
+
+ if (read(input_fd, &c, 1) != 1 && quit == FALSE)
+ panic("Can't read one char from fd #0");
+
+ return c & 0377;
+#endif /* UNIX */
+}
+
+/*
+ * Display() shows count lines on the terminal starting at the given
+ * coordinates. When the tail of the list is encountered it will fill the
+ * rest of the screen with blank_line's.
+ * When count is negative, a backwards print from `line' will be done.
+ */
+void display(x_coord, y_coord, line, count)
+int x_coord, y_coord;
+register LINE *line;
+register int count;
+{
+ set_cursor(x_coord, y_coord);
+
+/* Find new startline if count is negative */
+ if (count < 0) {
+ line = proceed(line, count);
+ count = -count;
+ }
+
+/* Print the lines */
+ while (line != tail && count-- >= 0) {
+ line->shift_count=0;
+ line_print(line);
+ line = line->next;
+ }
+
+/* Print the blank lines (if any) */
+ if (loading == FALSE) {
+ while (count-- >= 0) {
+#ifdef UNIX
+ tputs(CE, 0, _putchar);
+#else
+ string_print(blank_line);
+#endif /* UNIX */
+ putchar('\n');
+ }
+ }
+}
+
+/*
+ * Write_char does a buffered output.
+ */
+int write_char(fd, c)
+int fd;
+char c;
+{
+ screen [out_count++] = c;
+ if (out_count == SCREEN_SIZE) /* Flush on SCREEN_SIZE chars */
+ return flush_buffer(fd);
+ return FINE;
+}
+
+/*
+ * Writeline writes the given string on the given filedescriptor.
+ */
+int writeline(fd, text)
+register int fd;
+register char *text;
+{
+ while(*text)
+ if (write_char(fd, *text++) == ERRORS)
+ return ERRORS;
+ return FINE;
+}
+
+/*
+ * Put_line print the given line on the standard output. If offset is not zero
+ * printing will start at that x-coordinate. If the FLAG clear_line is TRUE,
+ * then (screen) line will be cleared when the end of the line has been
+ * reached.
+ */
+void put_line(line, offset, clear_line)
+LINE *line; /* Line to print */
+int offset; /* Offset to start */
+FLAG clear_line; /* Clear to eoln if TRUE */
+{
+ register char *textp = line->text;
+ register int count = get_shift(line->shift_count) * -SHIFT_SIZE;
+ int tab_count; /* Used in tab expansion */
+
+/* Skip all chars as indicated by the offset and the shift_count field */
+ while (count < offset) {
+ if (is_tab(*textp++))
+ count = tab(count);
+ else
+ count++;
+ }
+
+ while (*textp != '\n' && count < XBREAK) {
+ if (is_tab(*textp)) { /* Expand tabs to spaces */
+ tab_count = tab(count);
+ while (count < XBREAK && count < tab_count) {
+ count++;
+ putchar(' ');
+ }
+ textp++;
+ }
+ else {
+ if (*textp >= '\01' && *textp <= '\037') {
+#ifdef UNIX
+ tputs(SO, 0, _putchar);
+#else
+ string_print (rev_video);
+#endif /* UNIX */
+ putchar(*textp++ + '\100');
+#ifdef UNIX
+ tputs(SE, 0, _putchar);
+#else
+ string_print (normal_video);
+#endif /* UNIX */
+ }
+ else
+ putchar(*textp++);
+ count++;
+ }
+ }
+
+/* If line is longer than XBREAK chars, print the shift_mark */
+ if (count == XBREAK && *textp != '\n')
+ putchar(textp[1]=='\n' ? *textp : SHIFT_MARK);
+
+/* Clear the rest of the line is clear_line is TRUE */
+ if (clear_line == TRUE) {
+#ifdef UNIX
+ tputs(CE, 0, _putchar);
+#else
+ string_print(blank_line);
+#endif /* UNIX */
+ putchar('\n');
+ }
+}
+
+/*
+ * Flush the I/O buffer on filedescriptor fd.
+ */
+int flush_buffer(fd)
+int fd;
+{
+ if (out_count <= 0) /* There is nothing to flush */
+ return FINE;
+#ifdef UNIX
+ if (fd == STD_OUT) {
+ printf("%.*s", out_count, screen);
+ _flush();
+ }
+ else
+#endif /* UNIX */
+ if (write(fd, screen, out_count) != out_count) {
+ bad_write(fd);
+ return ERRORS;
+ }
+ clear_buffer(); /* Empty buffer */
+ return FINE;
+}
+
+/*
+ * Bad_write() is called when a write failed. Notify the user.
+ */
+void bad_write(fd)
+int fd;
+{
+ if (fd == STD_OUT) /* Cannot write to terminal? */
+ exit(1);
+
+ clear_buffer();
+ build_string(text_buffer, "Command aborted: %s (File incomplete)",
+ (errno == ENOSPC || errno == -ENOSPC) ?
+ "No space on device" : "Write error");
+ error(text_buffer, NIL_PTR);
+}
+
+/*
+ * Catch the SIGQUIT signal (^\) send to mined. It turns on the quitflag.
+ */
+void catch(sig)
+int sig;
+{
+/* Reset the signal */
+ signal(SIGQUIT, catch);
+ quit = TRUE;
+}
+
+/*
+ * Abort_mined() will leave mined. Confirmation is asked first.
+ */
+void abort_mined()
+{
+ quit = FALSE;
+
+/* Ask for confirmation */
+ status_line("Really abort? ", NIL_PTR);
+ if (getchar() != 'y') {
+ clear_status();
+ return;
+ }
+
+/* Reset terminal */
+ raw_mode(OFF);
+ set_cursor(0, ymax);
+ putchar('\n');
+ flush();
+#ifdef UNIX
+ abort();
+#else
+ exit(1);
+#endif /* UNIX */
+}
+
+#define UNDEF _POSIX_VDISABLE
+
+/*
+ * Set and reset tty into CBREAK or old mode according to argument `state'. It
+ * also sets all signal characters (except for ^\) to UNDEF. ^\ is caught.
+ */
+void raw_mode(state)
+FLAG state;
+{
+ static struct termios old_tty;
+ static struct termios new_tty;
+
+ if (state == OFF) {
+ tcsetattr(input_fd, TCSANOW, &old_tty);
+ return;
+ }
+
+/* Save old tty settings */
+ tcgetattr(input_fd, &old_tty);
+
+/* Set tty to CBREAK mode */
+ tcgetattr(input_fd, &new_tty);
+ new_tty.c_lflag &= ~(ICANON|ECHO|ECHONL);
+ new_tty.c_iflag &= ~(IXON|IXOFF);
+
+/* Unset signal chars, leave only SIGQUIT set to ^\ */
+ new_tty.c_cc[VINTR] = new_tty.c_cc[VSUSP] = UNDEF;
+ new_tty.c_cc[VQUIT] = '\\' & 037;
+ signal(SIGQUIT, catch); /* Which is caught */
+
+ tcsetattr(input_fd, TCSANOW, &new_tty);
+}
+
+/*
+ * Panic() is called with an error number and a message. It is called when
+ * something unrecoverable has happened.
+ * It writes the message to the terminal, resets the tty and exits.
+ * Ask the user if he wants to save his file.
+ */
+void panic(message)
+register char *message;
+{
+ extern char yank_file[];
+
+#ifdef UNIX
+ tputs(CL, 0, _putchar);
+ build_string(text_buffer, "%s\nError code %d\n", message, errno);
+#else
+ build_string(text_buffer, "%s%s\nError code %d\n", enter_string, message, errno);
+#endif /* UNIX */
+ (void) write(STD_OUT, text_buffer, length_of(text_buffer));
+
+ if (loading == FALSE)
+ XT(); /* Check if file can be saved */
+ else
+ (void) unlink(yank_file);
+ raw_mode(OFF);
+
+#ifdef UNIX
+ abort();
+#else
+ exit(1);
+#endif /* UNIX */
+}
+
+char *alloc(bytes)
+int bytes;
+{
+ char *p;
+
+ p = malloc((unsigned) bytes);
+ if (p == NIL_PTR) {
+ if (loading == TRUE)
+ panic("File too big.");
+ panic("Out of memory.");
+ }
+ return(p);
+}
+
+void free_space(p)
+char *p;
+{
+ free(p);
+}
+
+/* ======================================================================== *
+ * Main loops *
+ * ======================================================================== */
+
+/* The mapping between input codes and functions. */
+
+void (*key_map[256])() = { /* map ASCII characters to functions */
+ /* 000-017 */ MA, BL, MP, YA, SD, RD, MN, IF, DPC, S, S, DT, LR, S, DNW,LIB,
+ /* 020-037 */ DPW, WB, GR, SH, DLN, SU, VI, XWT, XT, PT, EL, ESC, I, GOTO,
+ HIGH, LOW,
+ /* 040-057 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 060-077 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 100-117 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 120-137 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 140-157 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 160-177 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, DCC,
+ /* 200-217 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 220-237 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 240-257 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 260-277 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 300-317 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 320-337 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 340-357 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+ /* 360-377 */ S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
+};
+
+int nlines; /* Number of lines in file */
+LINE *header; /* Head of line list */
+LINE *tail; /* Last line in line list */
+LINE *cur_line; /* Current line in use */
+LINE *top_line; /* First line of screen */
+LINE *bot_line; /* Last line of screen */
+char *cur_text; /* Current char on current line in use */
+int last_y; /* Last y of screen. Usually SCREENMAX */
+char screen[SCREEN_SIZE]; /* Output buffer for "writes" and "reads" */
+
+int x, y; /* x, y coordinates on screen */
+FLAG modified = FALSE; /* Set when file is modified */
+FLAG stat_visible; /* Set if status_line is visible */
+FLAG writable; /* Set if file cannot be written */
+FLAG loading; /* Set if we are loading a file. */
+FLAG quit = FALSE; /* Set when quit character is typed */
+FLAG rpipe = FALSE; /* Set if file should be read from stdin */
+int input_fd = 0; /* Fd for command input */
+int out_count; /* Index in output buffer */
+char file_name[LINE_LEN]; /* Name of file in use */
+char text_buffer[MAX_CHARS]; /* Buffer for modifying text */
+
+/* Escape sequences. */
+#ifdef UNIX
+char *CE, *VS, *SO, *SE, *CL, *AL, *CM;
+#else
+char *enter_string = "\033[H\033[J"; /* String printed on entering mined */
+char *pos_string = "\033[%d;%dH"; /* Absolute cursor position */
+char *rev_scroll = "\033M"; /* String for reverse scrolling */
+char *rev_video = "\033[7m"; /* String for starting reverse video */
+char *normal_video = "\033[m"; /* String for leaving reverse video */
+char *blank_line = "\033[K"; /* Clear line to end */
+#endif /* UNIX */
+
+/*
+ * Yank variables.
+ */
+FLAG yank_status = NOT_VALID; /* Status of yank_file */
+char yank_file[] = "/tmp/mined.XXXXXX";
+long chars_saved; /* Nr of chars in buffer */
+
+/*
+ * Initialize is called when a another file is edited. It free's the allocated
+ * space and sets modified back to FALSE and fixes the header/tail pointer.
+ */
+void initialize()
+{
+ register LINE *line, *next_line;
+
+/* Delete the whole list */
+ for (line = header->next; line != tail; line = next_line) {
+ next_line = line->next;
+ free_space(line->text);
+ free_space((char*)line);
+ }
+
+/* header and tail should point to itself */
+ line->next = line->prev = line;
+ x = y = 0;
+ rpipe = modified = FALSE;
+}
+
+/*
+ * Basename() finds the absolute name of the file out of a given path_name.
+ */
+char *basename(path)
+char *path;
+{
+ register char *ptr = path;
+ register char *last = NIL_PTR;
+
+ while (*ptr != '\0') {
+ if (*ptr == '/')
+ last = ptr;
+ ptr++;
+ }
+ if (last == NIL_PTR)
+ return path;
+ if (*(last + 1) == '\0') { /* E.g. /usr/tmp/pipo/ */
+ *last = '\0';
+ return basename(path);/* Try again */
+ }
+ return last + 1;
+}
+
+/*
+ * Load_file loads the file `file' into core. If file is a NIL_PTR or the file
+ * couldn't be opened, just some initializations are done, and a line consisting
+ * of a `\n' is installed.
+ */
+void load_file(file)
+char *file;
+{
+ register LINE *line = header;
+ register int len;
+ long nr_of_chars = 0L;
+ int fd = -1; /* Filedescriptor for file */
+
+ nlines = 0; /* Zero lines to start with */
+
+/* Open file */
+ writable = TRUE; /* Benefit of the doubt */
+ if (file == NIL_PTR) {
+ if (rpipe == FALSE)
+ status_line("No file.", NIL_PTR);
+ else {
+ fd = 0;
+ file = "standard input";
+ }
+ file_name[0] = '\0';
+ }
+ else {
+ copy_string(file_name, file); /* Save file name */
+ if (access(file, 0) < 0) /* Cannot access file. */
+ status_line("New file ", file);
+ else if ((fd = open(file, 0)) < 0)
+ status_line("Cannot open ", file);
+ else if (access(file, 2) != 0) /* Set write flag */
+ writable = FALSE;
+ }
+
+/* Read file */
+ loading = TRUE; /* Loading file, so set flag */
+
+ if (fd >= 0) {
+ status_line("Reading ", file);
+ while ((len = get_line(fd, text_buffer)) != ERRORS) {
+ line = line_insert(line, text_buffer, len);
+ nr_of_chars += (long) len;
+ }
+ if (nlines == 0) /* The file was empty! */
+ line = line_insert(line, "\n", 1);
+ clear_buffer(); /* Clear output buffer */
+ cur_line = header->next;
+ fstatus("Read", nr_of_chars);
+ (void) close(fd); /* Close file */
+ }
+ else /* Just install a "\n" */
+ (void) line_insert(line, "\n", 1);
+
+ reset(header->next, 0); /* Initialize pointers */
+
+/* Print screen */
+ display (0, 0, header->next, last_y);
+ move_to (0, 0);
+ flush(); /* Flush buffer */
+ loading = FALSE; /* Stop loading, reset flag */
+}
+
+
+/*
+ * Get_line reads one line from filedescriptor fd. If EOF is reached on fd,
+ * get_line() returns ERRORS, else it returns the length of the string.
+ */
+int get_line(fd, buffer)
+int fd;
+register char *buffer;
+{
+ static char *last = NIL_PTR;
+ static char *current = NIL_PTR;
+ static int read_chars;
+ register char *cur_pos = current;
+ char *begin = buffer;
+
+ do {
+ if (cur_pos == last) {
+ if ((read_chars = read(fd, screen, SCREEN_SIZE)) <= 0)
+ break;
+ last = &screen[read_chars];
+ cur_pos = screen;
+ }
+ if (*cur_pos == '\0')
+ *cur_pos = ' ';
+ } while ((*buffer++ = *cur_pos++) != '\n');
+
+ current = cur_pos;
+ if (read_chars <= 0) {
+ if (buffer == begin)
+ return ERRORS;
+ if (*(buffer - 1) != '\n')
+ if (loading == TRUE) /* Add '\n' to last line of file */
+ *buffer++ = '\n';
+ else {
+ *buffer = '\0';
+ return NO_LINE;
+ }
+ }
+
+ *buffer = '\0';
+ return buffer - begin;
+}
+
+/*
+ * Install_line installs the buffer into a LINE structure It returns a pointer
+ * to the allocated structure.
+ */
+LINE *install_line(buffer, length)
+char *buffer;
+int length;
+{
+ register LINE *new_line = (LINE *) alloc(sizeof(LINE));
+
+ new_line->text = alloc(length + 1);
+ new_line->shift_count = 0;
+ copy_string(new_line->text, buffer);
+
+ return new_line;
+}
+
+void main(argc, argv)
+int argc;
+char *argv[];
+{
+/* mined is the Minix editor. */
+
+ register int index; /* Index in key table */
+ struct winsize winsize;
+
+#ifdef UNIX
+ get_term();
+ tputs(VS, 0, _putchar);
+ tputs(CL, 0, _putchar);
+#else
+ string_print(enter_string); /* Hello world */
+#endif /* UNIX */
+ if (ioctl(STD_OUT, TIOCGWINSZ, &winsize) == 0 && winsize.ws_row != 0) {
+ ymax = winsize.ws_row - 1;
+ screenmax = ymax - 1;
+ }
+
+ if (!isatty(0)) { /* Reading from pipe */
+ if (argc != 1) {
+ write(2, "Cannot find terminal.\n", 22);
+ exit (1);
+ }
+ rpipe = TRUE;
+ modified = TRUE; /* Set modified so he can write */
+ open_device();
+ }
+
+ raw_mode(ON); /* Set tty to appropriate mode */
+
+ header = tail = (LINE *) alloc(sizeof(LINE)); /* Make header of list*/
+ header->text = NIL_PTR;
+ header->next = tail->prev = header;
+
+/* Load the file (if any) */
+ if (argc < 2)
+ load_file(NIL_PTR);
+ else {
+ (void) get_file(NIL_PTR, argv[1]); /* Truncate filename */
+ load_file(argv[1]);
+ }
+
+ /* Main loop of the editor. */
+ for (;;) {
+ index = getchar();
+ if (stat_visible == TRUE)
+ clear_status();
+ if (quit == TRUE)
+ abort_mined();
+ else { /* Call the function for this key */
+ (*key_map[index])(index);
+ flush(); /* Flush output (if any) */
+ if (quit == TRUE)
+ quit = FALSE;
+ }
+ }
+ /* NOTREACHED */
+}
+
+/* ======================================================================== *
+ * Miscellaneous *
+ * ======================================================================== */
+
+/*
+ * Redraw the screen
+ */
+void RD()
+{
+/* Clear screen */
+#ifdef UNIX
+ tputs(VS, 0, _putchar);
+ tputs(CL, 0, _putchar);
+#else
+ string_print(enter_string);
+#endif /* UNIX */
+
+/* Print first page */
+ display(0, 0, top_line, last_y);
+
+/* Clear last line */
+ set_cursor(0, ymax);
+#ifdef UNIX
+ tputs(CE, 0, _putchar);
+#else
+ string_print(blank_line);
+#endif /* UNIX */
+ move_to(x, y);
+}
+
+/*
+ * Ignore this keystroke.
+ */
+void I()
+{
+}
+
+/*
+ * Leave editor. If the file has changed, ask if the user wants to save it.
+ */
+void XT()
+{
+ if (modified == TRUE && ask_save() == ERRORS)
+ return;
+
+ raw_mode(OFF);
+ set_cursor(0, ymax);
+ putchar('\n');
+ flush();
+ (void) unlink(yank_file); /* Might not be necessary */
+ exit(0);
+}
+
+void (*escfunc(c))()
+int c;
+{
+#if (CHIP == M68000)
+#ifndef COMPAT
+ int ch;
+#endif
+#endif
+ if (c == '[') {
+ /* Start of ASCII escape sequence. */
+ c = getchar();
+#if (CHIP == M68000)
+#ifndef COMPAT
+ if ((c >= '0') && (c <= '9')) ch = getchar();
+ /* ch is either a tilde or a second digit */
+#endif
+#endif
+ switch (c) {
+ case 'H': return(HO);
+ case 'A': return(UP);
+ case 'B': return(DN);
+ case 'C': return(RT);
+ case 'D': return(LF);
+#if (CHIP == M68000)
+#ifndef COMPAT
+ /* F1 = ESC [ 1 ~ */
+ /* F2 = ESC [ 2 ~ */
+ /* F3 = ESC [ 3 ~ */
+ /* F4 = ESC [ 4 ~ */
+ /* F5 = ESC [ 5 ~ */
+ /* F6 = ESC [ 6 ~ */
+ /* F7 = ESC [ 17 ~ */
+ /* F8 = ESC [ 18 ~ */
+ case '1':
+ switch (ch) {
+ case '~': return(SF);
+ case '7': (void) getchar(); return(MA);
+ case '8': (void) getchar(); return(CTL);
+ }
+ case '2': return(SR);
+ case '3': return(PD);
+ case '4': return(PU);
+ case '5': return(FS);
+ case '6': return(EF);
+#endif
+#endif
+#if (CHIP == INTEL)
+#ifdef ASSUME_CONS25
+ case 'G': return(PD);
+ case 'I': return(PU);
+ case 'F': return(EF);
+ /* F1 - help */
+ case 'M': return(HLP);
+ /* F2 - file status */
+ case 'N': return(FS);
+ /* F3 - search fwd */
+ case 'O': return(SF);
+ /* Shift-F3 - search back */
+ case 'a':return(SR);
+ /* F4 - global replace */
+ case 'P': return(GR);
+ /* Shift-F4 - line replace */
+ case 'b': return(LR);
+#else
+ case 'G': return(FS);
+ case 'S': return(SR);
+ case 'T': return(SF);
+ case 'U': return(PD);
+ case 'V': return(PU);
+ case 'Y': return(EF);
+#endif
+#endif
+ }
+ return(I);
+ }
+#if (CHIP == M68000)
+#ifdef COMPAT
+ if (c == 'O') {
+ /* Start of ASCII function key escape sequence. */
+ switch (getchar()) {
+ case 'P': return(SF);
+ case 'Q': return(SR);
+ case 'R': return(PD);
+ case 'S': return(PU);
+ case 'T': return(FS);
+ case 'U': return(EF);
+ case 'V': return(MA);
+ case 'W': return(CTL);
+ }
+ }
+#endif
+#endif
+ return(I);
+}
+
+/*
+ * ESC() wants a count and a command after that. It repeats the
+ * command count times. If a ^\ is given during repeating, stop looping and
+ * return to main loop.
+ */
+void ESC()
+{
+ register int count = 0;
+ register void (*func)();
+ int index;
+
+ index = getchar();
+ while (index >= '0' && index <= '9' && quit == FALSE) {
+ count *= 10;
+ count += index - '0';
+ index = getchar();
+ }
+ if (count == 0) {
+ count = 1;
+ func = escfunc(index);
+ } else {
+ func = key_map[index];
+ if (func == ESC)
+ func = escfunc(getchar());
+ }
+
+ if (func == I) { /* Function assigned? */
+ clear_status();
+ return;
+ }
+
+ while (count-- > 0 && quit == FALSE) {
+ if (stat_visible == TRUE)
+ clear_status();
+ (*func)(index);
+ flush();
+ }
+
+ if (quit == TRUE) /* Abort has been given */
+ error("Aborted", NIL_PTR);
+}
+
+/*
+ * Ask the user if he wants to save his file or not.
+ */
+int ask_save()
+{
+ register int c;
+
+ status_line(file_name[0] ? basename(file_name) : "[buffer]" ,
+ " has been modified. Save? (y/n)");
+
+ while((c = getchar()) != 'y' && c != 'n' && quit == FALSE) {
+ ring_bell();
+ flush();
+ }
+
+ clear_status();
+
+ if (c == 'y')
+ return WT();
+
+ if (c == 'n')
+ return FINE;
+
+ quit = FALSE; /* Abort character has been given */
+ return ERRORS;
+}
+
+/*
+ * Line_number() finds the line number we're on.
+ */
+int line_number()
+{
+ register LINE *line = header->next;
+ register int count = 1;
+
+ while (line != cur_line) {
+ count++;
+ line = line->next;
+ }
+
+ return count;
+}
+
+/*
+ * Display a line telling how many chars and lines the file contains. Also tell
+ * whether the file is readonly and/or modified.
+ */
+void file_status(message, count, file, lines, writefl, changed)
+char *message;
+register long count; /* Contains number of characters in file */
+char *file;
+int lines;
+FLAG writefl, changed;
+{
+ register LINE *line;
+ char msg[LINE_LEN + 40];/* Buffer to hold line */
+ char yank_msg[LINE_LEN];/* Buffer for msg of yank_file */
+
+ if (count < 0) /* Not valid. Count chars in file */
+ for (line = header->next; line != tail; line = line->next)
+ count += length_of(line->text);
+
+ if (yank_status != NOT_VALID) /* Append buffer info */
+ build_string(yank_msg, " Buffer: %D char%s.", chars_saved,
+ (chars_saved == 1L) ? "" : "s");
+ else
+ yank_msg[0] = '\0';
+
+ build_string(msg, "%s %s%s%s %d line%s %D char%s.%s Line %d", message,
+ (rpipe == TRUE && *message != '[') ? "standard input" : basename(file),
+ (changed == TRUE) ? "*" : "",
+ (writefl == FALSE) ? " (Readonly)" : "",
+ lines, (lines == 1) ? "" : "s",
+ count, (count == 1L) ? "" : "s",
+ yank_msg, line_number());
+
+ if (length_of(msg) + 1 > LINE_LEN - 4) {
+ msg[LINE_LEN - 4] = SHIFT_MARK; /* Overflow on status line */
+ msg[LINE_LEN - 3] = '\0';
+ }
+ status_line(msg, NIL_PTR); /* Print the information */
+}
+
+/*
+ * Build_string() prints the arguments as described in fmt, into the buffer.
+ * %s indicates an argument string, %d indicated an argument number.
+ */
+#if __STDC__
+void build_string(char *buf, char *fmt, ...)
+{
+#else
+void build_string(buf, fmt, va_alist)
+char *buf, *fmt;
+va_dcl
+{
+#endif
+ va_list argptr;
+ char *scanp;
+
+#if __STDC__
+ va_start(argptr, fmt);
+#else
+ va_start(argptr);
+#endif
+
+ while (*fmt) {
+ if (*fmt == '%') {
+ fmt++;
+ switch (*fmt++) {
+ case 's' :
+ scanp = va_arg(argptr, char *);
+ break;
+ case 'd' :
+ scanp = num_out((long) va_arg(argptr, int));
+ break;
+ case 'D' :
+ scanp = num_out((long) va_arg(argptr, long));
+ break;
+ default :
+ scanp = "";
+ }
+ while (*buf++ = *scanp++)
+ ;
+ buf--;
+ }
+ else
+ *buf++ = *fmt++;
+ }
+ va_end(argptr);
+ *buf = '\0';
+}
+
+/*
+ * Output an (unsigned) long in a 10 digit field without leading zeros.
+ * It returns a pointer to the first digit in the buffer.
+ */
+char *num_out(number)
+long number;
+{
+ static char num_buf[11]; /* Buffer to build number */
+ register long digit; /* Next digit of number */
+ register long pow = 1000000000L; /* Highest ten power of long */
+ FLAG digit_seen = FALSE;
+ int i;
+
+ for (i = 0; i < 10; i++) {
+ digit = number / pow; /* Get next digit */
+ if (digit == 0L && digit_seen == FALSE && i != 9)
+ num_buf[i] = ' ';
+ else {
+ num_buf[i] = '0' + (char) digit;
+ number -= digit * pow; /* Erase digit */
+ digit_seen = TRUE;
+ }
+ pow /= 10L; /* Get next digit */
+ }
+ for (i = 0; num_buf[i] == ' '; i++) /* Skip leading spaces */
+ ;
+ return (&num_buf[i]);
+}
+
+/*
+ * Get_number() read a number from the terminal. The last character typed in is
+ * returned. ERRORS is returned on a bad number. The resulting number is put
+ * into the integer the arguments points to.
+ */
+int get_number(message, result)
+char *message;
+int *result;
+{
+ register int index;
+ register int count = 0;
+
+ status_line(message, NIL_PTR);
+
+ index = getchar();
+ if (quit == FALSE && (index < '0' || index > '9')) {
+ error("Bad count", NIL_PTR);
+ return ERRORS;
+ }
+
+/* Convert input to a decimal number */
+ while (index >= '0' && index <= '9' && quit == FALSE) {
+ count *= 10;
+ count += index - '0';
+ index = getchar();
+ }
+
+ if (quit == TRUE) {
+ clear_status();
+ return ERRORS;
+ }
+
+ *result = count;
+ return index;
+}
+
+/*
+ * Input() reads a string from the terminal. When the KILL character is typed,
+ * it returns ERRORS.
+ */
+int input(inbuf, clearfl)
+char *inbuf;
+FLAG clearfl;
+{
+ register char *ptr;
+ register char c; /* Character read */
+
+ ptr = inbuf;
+
+ *ptr = '\0';
+ while (quit == FALSE) {
+ flush();
+ switch (c = getchar()) {
+ case '\b' : /* Erase previous char */
+ if (ptr > inbuf) {
+ ptr--;
+#ifdef UNIX
+ tputs(SE, 0, _putchar);
+#else
+ string_print(normal_video);
+#endif /* UNIX */
+ if (is_tab(*ptr))
+ string_print(" \b\b\b \b\b");
+ else
+ string_print(" \b\b \b");
+#ifdef UNIX
+ tputs(SO, 0, _putchar);
+#else
+ string_print(rev_video);
+#endif /* UNIX */
+ string_print(" \b");
+ *ptr = '\0';
+ }
+ else
+ ring_bell();
+ break;
+ case '\n' : /* End of input */
+ /* If inbuf is empty clear status_line */
+ return (ptr == inbuf && clearfl == TRUE) ? NO_INPUT :FINE;
+ default : /* Only read ASCII chars */
+ if ((c >= ' ' && c <= '~') || c == '\t') {
+ *ptr++ = c;
+ *ptr = '\0';
+ if (c == '\t')
+ string_print("^I");
+ else
+ putchar(c);
+ string_print(" \b");
+ }
+ else
+ ring_bell();
+ }
+ }
+ quit = FALSE;
+ return ERRORS;
+}
+
+/*
+ * Get_file() reads a filename from the terminal. Filenames longer than
+ * FILE_LENGHT chars are truncated.
+ */
+int get_file(message, file)
+char *message, *file;
+{
+ char *ptr;
+ int ret;
+
+ if (message == NIL_PTR || (ret = get_string(message, file, TRUE)) == FINE) {
+ if (length_of((ptr = basename(file))) > NAME_MAX)
+ ptr[NAME_MAX] = '\0';
+ }
+ return ret;
+}
+
+/* ======================================================================== *
+ * UNIX I/O Routines *
+ * ======================================================================== */
+
+#ifdef UNIX
+#undef putchar
+
+int _getchar()
+{
+ char c;
+
+ if (read(input_fd, &c, 1) != 1 && quit == FALSE)
+ panic ("Cannot read 1 byte from input");
+ return c & 0377;
+}
+
+void _flush()
+{
+ (void) fflush(stdout);
+}
+
+void _putchar(c)
+char c;
+{
+ (void) write_char(STD_OUT, c);
+}
+
+void get_term()
+{
+ static char termbuf[50];
+ extern char *tgetstr(), *getenv();
+ char *loc = termbuf;
+ char entry[1024];
+
+ if (tgetent(entry, getenv("TERM")) <= 0) {
+ printf("Unknown terminal.\n");
+ exit(1);
+ }
+
+ AL = tgetstr("al", &loc);
+ CE = tgetstr("ce", &loc);
+ VS = tgetstr("vs", &loc);
+ CL = tgetstr("cl", &loc);
+ SO = tgetstr("so", &loc);
+ SE = tgetstr("se", &loc);
+ CM = tgetstr("cm", &loc);
+ ymax = tgetnum("li") - 1;
+ screenmax = ymax - 1;
+
+ if (!CE || !SO || !SE || !CL || !AL || !CM) {
+ printf("Sorry, no mined on this type of terminal\n");
+ exit(1);
+ }
+}
+#endif /* UNIX */
diff --git a/release/picobsd/tinyware/mined/mined2.c b/release/picobsd/tinyware/mined/mined2.c
new file mode 100644
index 000000000000..c0434bc41403
--- /dev/null
+++ b/release/picobsd/tinyware/mined/mined2.c
@@ -0,0 +1,1763 @@
+/*
+ * Part 2 of the mined editor.
+ */
+
+/* ======================================================================== *
+ * Move Commands *
+ * ======================================================================== */
+
+#include "mined.h"
+#include <string.h>
+
+/*
+ * Move one line up.
+ */
+void UP()
+{
+ if (y == 0) { /* Top line of screen. Scroll one line */
+ (void) reverse_scroll();
+ move_to(x, y);
+ }
+ else /* Move to previous line */
+ move_to(x, y - 1);
+}
+
+static char *help_string=
+" Mined (Minix Editor), FreeBSD version.\n"
+"------------------------+-------------------------------+---------------------\n"
+" CURSOR MOTION | EDITING | MISC\n"
+" Up | ^N Delete next word | ^E Erase & redraw\n"
+" Down cursor keys | ^P Delete prev. word | screen\n"
+" Left | ^T Delete to EOL | ^\\ Abort current\n"
+" Right +-------------------------------+ operation\n"
+" ^A start of line | BLOCKS | Esc repeat last\n"
+" ^Z end of line | ^@ Set mark | cmd # times\n"
+" ^^ screen top | ^K Delete mark <--> cursor | F2 file status\n"
+" ^_ screen bottom | ^C Save mark <--> cursor +=====================\n"
+" ^F word fwd. | ^Y Insert the contents of | ^X EXIT\n"
+" ^B word back | the save file at cursor | ^S run shell\n"
+"------------------------+ ^Q Insert the contents of +=====================\n"
+" SCREEN MOTION | the save file into new | SEARCH & REPLACE\n"
+" Home file top | file | F3 fwd. search\n"
+" End file bottom +-------------------------------+ SF3 bck. search\n"
+" PgUp page up | FILES | F4 Global replace\n"
+" PgD page down | ^G Insert a file at cursor | SF4 Line replace\n"
+" ^D rev. scroll | ^V Visit another file +---------------------\n"
+" ^U fwd. scroll | ^W Write current file | F1 HELP\n"
+" ^] goto line # | |\n"
+"------------------------+-------------------------------+---------------------\n"
+"Press any key to continue...";
+/*
+ * Help
+ */
+void HLP()
+{
+ char c;
+
+ string_print(enter_string);
+ string_print(help_string);
+ c=getchar();
+ RD();
+ return;
+}
+
+/*
+ * Move one line down.
+ */
+void DN()
+{
+ if (y == last_y) { /* Last line of screen. Scroll one line */
+ if (bot_line->next == tail && bot_line->text[0] != '\n') {
+ dummy_line(); /* Create new empty line */
+ DN();
+ return;
+ }
+ else {
+ (void) forward_scroll();
+ move_to(x, y);
+ }
+ }
+ else /* Move to next line */
+ move_to(x, y + 1);
+}
+
+/*
+ * Move left one position.
+ */
+void LF()
+{
+ if (x == 0 && get_shift(cur_line->shift_count) == 0) {/* Begin of line */
+ if (cur_line->prev != header) {
+ UP(); /* Move one line up */
+ move_to(LINE_END, y);
+ }
+ }
+ else
+ move_to(x - 1, y);
+}
+
+/*
+ * Move right one position.
+ */
+void RT()
+{
+ if (*cur_text == '\n') {
+ if (cur_line->next != tail) { /* Last char of file */
+ DN(); /* Move one line down */
+ move_to(LINE_START, y);
+ }
+ }
+ else
+ move_to(x + 1, y);
+}
+
+/*
+ * Move to coordinates [0, 0] on screen.
+ */
+void HIGH()
+{
+ move_to(0, 0);
+}
+
+/*
+ * Move to coordinates [0, YMAX] on screen.
+ */
+void LOW()
+{
+ move_to(0, last_y);
+}
+
+/*
+ * Move to begin of line.
+ */
+void BL()
+{
+ move_to(LINE_START, y);
+}
+
+/*
+ * Move to end of line.
+ */
+void EL()
+{
+ move_to(LINE_END, y);
+}
+
+/*
+ * GOTO() prompts for a linenumber and moves to that line.
+ */
+void GOTO()
+{
+ int number;
+ LINE *line;
+
+ if (get_number("Please enter line number.", &number) == ERRORS)
+ return;
+
+ if (number <= 0 || (line = proceed(header->next, number - 1)) == tail)
+ error("Illegal line number: ", num_out((long) number));
+ else
+ move_to(x, find_y(line));
+}
+
+/*
+ * Scroll forward one page or to eof, whatever comes first. (Bot_line becomes
+ * top_line of display.) Try to leave the cursor on the same line. If this is
+ * not possible, leave cursor on the line halfway the page.
+ */
+void PD()
+{
+ register int i;
+
+ for (i = 0; i < screenmax; i++)
+ if (forward_scroll() == ERRORS)
+ break; /* EOF reached */
+ if (y - i < 0) /* Line no longer on screen */
+ move_to(0, screenmax >> 1);
+ else
+ move_to(0, y - i);
+}
+
+
+/*
+ * Scroll backwards one page or to top of file, whatever comes first. (Top_line
+ * becomes bot_line of display). The very bottom line (YMAX) is always blank.
+ * Try to leave the cursor on the same line. If this is not possible, leave
+ * cursor on the line halfway the page.
+ */
+void PU()
+{
+ register int i;
+
+ for (i = 0; i < screenmax; i++)
+ if (reverse_scroll() == ERRORS)
+ break; /* Top of file reached */
+ set_cursor(0, ymax); /* Erase very bottom line */
+#ifdef UNIX
+ tputs(CE, 0, _putchar);
+#else
+ string_print(blank_line);
+#endif /* UNIX */
+ if (y + i > screenmax) /* line no longer on screen */
+ move_to(0, screenmax >> 1);
+ else
+ move_to(0, y + i);
+}
+
+/*
+ * Go to top of file, scrolling if possible, else redrawing screen.
+ */
+void HO()
+{
+ if (proceed(top_line, -screenmax) == header)
+ PU(); /* It fits. Let PU do it */
+ else {
+ reset(header->next, 0);/* Reset top_line, etc. */
+ RD(); /* Display full page */
+ }
+ move_to(LINE_START, 0);
+}
+
+/*
+ * Go to last line of file, scrolling if possible, else redrawing screen
+ */
+void EF()
+{
+ if (tail->prev->text[0] != '\n')
+ dummy_line();
+ if (proceed(bot_line, screenmax) == tail)
+ PD(); /* It fits. Let PD do it */
+ else {
+ reset(proceed(tail->prev, -screenmax), screenmax);
+ RD(); /* Display full page */
+ }
+ move_to(LINE_START, last_y);
+}
+
+/*
+ * Scroll one line up. Leave the cursor on the same line (if possible).
+ */
+void SU()
+{
+ if (top_line->prev == header) /* Top of file. Can't scroll */
+ return;
+
+ (void) reverse_scroll();
+ set_cursor(0, ymax); /* Erase very bottom line */
+#ifdef UNIX
+ tputs(CE, 0, _putchar);
+#else
+ string_print(blank_line);
+#endif /* UNIX */
+ move_to(x, (y == screenmax) ? screenmax : y + 1);
+}
+
+/*
+ * Scroll one line down. Leave the cursor on the same line (if possible).
+ */
+void SD()
+{
+ if (forward_scroll() != ERRORS)
+ move_to(x, (y == 0) ? 0 : y - 1);
+ else
+ set_cursor(x, y);
+}
+
+/*
+ * Perform a forward scroll. It returns ERRORS if we're at the last line of the
+ * file.
+ */
+int forward_scroll()
+{
+ if (bot_line->next == tail) /* Last line of file. No dice */
+ return ERRORS;
+ top_line = top_line->next;
+ bot_line = bot_line->next;
+ cur_line = cur_line->next;
+ set_cursor(0, ymax);
+ line_print(bot_line);
+
+ return FINE;
+}
+
+/*
+ * Perform a backwards scroll. It returns ERRORS if we're at the first line
+ * of the file.
+ */
+int reverse_scroll()
+{
+ if (top_line->prev == header)
+ return ERRORS; /* Top of file. Can't scroll */
+
+ if (last_y != screenmax) /* Reset last_y if necessary */
+ last_y++;
+ else
+ bot_line = bot_line->prev; /* Else adjust bot_line */
+ top_line = top_line->prev;
+ cur_line = cur_line->prev;
+
+/* Perform the scroll */
+ set_cursor(0, 0);
+#ifdef UNIX
+ tputs(AL, 0, _putchar);
+#else
+ string_print(rev_scroll);
+#endif /* UNIX */
+ set_cursor(0, 0);
+ line_print(top_line);
+
+ return FINE;
+}
+
+/*
+ * A word is defined as a number of non-blank characters separated by tabs
+ * spaces or linefeeds.
+ */
+
+/*
+ * MP() moves to the start of the previous word. A word is defined as a
+ * number of non-blank characters separated by tabs spaces or linefeeds.
+ */
+void MP()
+{
+ move_previous_word(NO_DELETE);
+}
+
+void move_previous_word(remove)
+FLAG remove;
+{
+ register char *begin_line;
+ register char *textp;
+ char start_char = *cur_text;
+ char *start_pos = cur_text;
+
+/* Fist check if we're at the beginning of line. */
+ if (cur_text == cur_line->text) {
+ if (cur_line->prev == header)
+ return;
+ start_char = '\0';
+ }
+
+ LF();
+
+ begin_line = cur_line->text;
+ textp = cur_text;
+
+/* Check if we're in the middle of a word. */
+ if (!alpha(*textp) || !alpha(start_char)) {
+ while (textp != begin_line && (white_space(*textp) || *textp == '\n'))
+ textp--;
+ }
+
+/* Now we're at the end of previous word. Skip non-blanks until a blank comes */
+ while (textp != begin_line && alpha(*textp))
+ textp--;
+
+/* Go to the next char if we're not at the beginning of the line */
+ if (textp != begin_line && *textp != '\n')
+ textp++;
+
+/* Find the x-coordinate of this address, and move to it */
+ move_address(textp);
+ if (remove == DELETE)
+ delete(cur_line, textp, cur_line, start_pos);
+}
+
+/*
+ * MN() moves to the start of the next word. A word is defined as a number of
+ * non-blank characters separated by tabs spaces or linefeeds. Always keep in
+ * mind that the pointer shouldn't pass the '\n'.
+ */
+void MN()
+{
+ move_next_word(NO_DELETE);
+}
+
+void move_next_word(remove)
+FLAG remove;
+{
+ register char *textp = cur_text;
+
+/* Move to the end of the current word. */
+ while (*textp != '\n' && alpha(*textp))
+ textp++;
+
+/* Skip all white spaces */
+ while (*textp != '\n' && white_space(*textp))
+ textp++;
+/* If we're deleting. delete the text in between */
+ if (remove == DELETE) {
+ delete(cur_line, cur_text, cur_line, textp);
+ return;
+ }
+
+/* If we're at end of line. move to the first word on the next line. */
+ if (*textp == '\n' && cur_line->next != tail) {
+ DN();
+ move_to(LINE_START, y);
+ textp = cur_text;
+ while (*textp != '\n' && white_space(*textp))
+ textp++;
+ }
+ move_address(textp);
+}
+
+/* ======================================================================== *
+ * Modify Commands *
+ * ======================================================================== */
+
+/*
+ * DCC deletes the character under the cursor. If this character is a '\n' the
+ * current line is joined with the next one.
+ * If this character is the only character of the line, the current line will
+ * be deleted.
+ */
+void DCC()
+{
+ if (*cur_text == '\n')
+ delete(cur_line,cur_text, cur_line->next,cur_line->next->text);
+ else
+ delete(cur_line, cur_text, cur_line, cur_text + 1);
+}
+
+/*
+ * DPC deletes the character on the left side of the cursor. If the cursor is
+ * at the beginning of the line, the last character if the previous line is
+ * deleted.
+ */
+void DPC()
+{
+ if (x == 0 && cur_line->prev == header)
+ return; /* Top of file */
+
+ LF(); /* Move one left */
+ DCC(); /* Delete character under cursor */
+}
+
+/*
+ * DLN deletes all characters until the end of the line. If the current
+ * character is a '\n', then delete that char.
+ */
+void DLN()
+{
+ if (*cur_text == '\n')
+ DCC();
+ else
+ delete(cur_line, cur_text, cur_line, cur_text + length_of(cur_text) -1);
+}
+
+/*
+ * DNW() deletes the next word (as described in MN())
+ */
+void DNW()
+{
+ if (*cur_text == '\n')
+ DCC();
+ else
+ move_next_word(DELETE);
+}
+
+/*
+ * DPW() deletes the next word (as described in MP())
+ */
+void DPW()
+{
+ if (cur_text == cur_line->text)
+ DPC();
+ else
+ move_previous_word(DELETE);
+}
+
+/*
+ * Insert character `character' at current location.
+ */
+void S(character)
+register char character;
+{
+ static char buffer[2];
+
+ buffer[0] = character;
+/* Insert the character */
+ if (insert(cur_line, cur_text, buffer) == ERRORS)
+ return;
+
+/* Fix screen */
+ if (character == '\n') {
+ set_cursor(0, y);
+ if (y == screenmax) { /* Can't use display */
+ line_print(cur_line);
+ (void) forward_scroll();
+ }
+ else {
+ reset(top_line, y); /* Reset pointers */
+ display(0, y, cur_line, last_y - y);
+ }
+ move_to(0, (y == screenmax) ? y : y + 1);
+ }
+ else if (x + 1 == XBREAK)/* If line must be shifted, just call move_to*/
+ move_to(x + 1, y);
+ else { /* else display rest of line */
+ put_line(cur_line, x, FALSE);
+ move_to(x + 1, y);
+ }
+}
+
+/*
+ * CTL inserts a control-char at the current location. A message that this
+ * function is called is displayed at the status line.
+ */
+void CTL()
+{
+ register char ctrl;
+
+ status_line("Enter control character.", NIL_PTR);
+ if ((ctrl = getchar()) >= '\01' && ctrl <= '\037') {
+ S(ctrl); /* Insert the char */
+ clear_status();
+ }
+ else
+ error ("Unknown control character", NIL_PTR);
+}
+
+/*
+ * LIB insert a line at the current position and moves back to the end of
+ * the previous line.
+ */
+void LIB()
+{
+ S('\n'); /* Insert the line */
+ UP(); /* Move one line up */
+ move_to(LINE_END, y); /* Move to end of this line */
+}
+
+/*
+ * Line_insert() inserts a new line with text pointed to by `string'.
+ * It returns the address of the new line.
+ */
+LINE *line_insert(line, string, len)
+register LINE *line;
+char *string;
+int len;
+{
+ register LINE *new_line;
+
+/* Allocate space for LINE structure and text */
+ new_line = install_line(string, len);
+
+/* Install the line into the double linked list */
+ new_line->prev = line;
+ new_line->next = line->next;
+ line->next = new_line;
+ new_line->next->prev = new_line;
+
+/* Increment nlines */
+ nlines++;
+
+ return new_line;
+}
+
+/*
+ * Insert() insert the string `string' at the given line and location.
+ */
+int insert(line, location, string)
+register LINE *line;
+char *location, *string;
+{
+ register char *bufp = text_buffer; /* Buffer for building line */
+ register char *textp = line->text;
+
+ if (length_of(textp) + length_of(string) >= MAX_CHARS) {
+ error("Line too long", NIL_PTR);
+ return ERRORS;
+ }
+
+ modified = TRUE; /* File has been modified */
+
+/* Copy part of line until `location' has been reached */
+ while (textp != location)
+ *bufp++ = *textp++;
+
+/* Insert string at this location */
+ while (*string != '\0')
+ *bufp++ = *string++;
+ *bufp = '\0';
+
+ if (*(string - 1) == '\n') /* Insert a new line */
+ (void) line_insert(line, location, length_of(location));
+ else /* Append last part of line */
+ copy_string(bufp, location);
+
+/* Install the new text in this line */
+ free_space(line->text);
+ line->text = alloc(length_of(text_buffer) + 1);
+ copy_string(line->text, text_buffer);
+
+ return FINE;
+}
+
+/*
+ * Line_delete() deletes the argument line out of the line list. The pointer to
+ * the next line is returned.
+ */
+LINE *line_delete(line)
+register LINE *line;
+{
+ register LINE *next_line = line->next;
+
+/* Delete the line */
+ line->prev->next = line->next;
+ line->next->prev = line->prev;
+
+/* Free allocated space */
+ free_space(line->text);
+ free_space((char*)line);
+
+/* Decrement nlines */
+ nlines--;
+
+ return next_line;
+}
+
+/*
+ * Delete() deletes all the characters (including newlines) between the
+ * startposition and endposition and fixes the screen accordingly. It
+ * returns the number of lines deleted.
+ */
+void delete(start_line, start_textp, end_line, end_textp)
+register LINE *start_line;
+LINE *end_line;
+char *start_textp, *end_textp;
+{
+ register char *textp = start_line->text;
+ register char *bufp = text_buffer; /* Storage for new line->text */
+ LINE *line, *stop;
+ int line_cnt = 0; /* Nr of lines deleted */
+ int count = 0;
+ int shift = 0; /* Used in shift calculation */
+ int nx = x;
+
+ modified = TRUE; /* File has been modified */
+
+/* Set up new line. Copy first part of start line until start_position. */
+ while (textp < start_textp) {
+ *bufp++ = *textp++;
+ count++;
+ }
+
+/* Check if line doesn't exceed MAX_CHARS */
+ if (count + length_of(end_textp) >= MAX_CHARS) {
+ error("Line too long", NIL_PTR);
+ return;
+ }
+
+/* Copy last part of end_line if end_line is not tail */
+ copy_string(bufp, (end_textp != NIL_PTR) ? end_textp : "\n");
+
+/* Delete all lines between start and end_position (including end_line) */
+ line = start_line->next;
+ stop = end_line->next;
+ while (line != stop && line != tail) {
+ line = line_delete(line);
+ line_cnt++;
+ }
+
+/* Check if last line of file should be deleted */
+ if (end_textp == NIL_PTR && length_of(start_line->text) == 1 && nlines > 1) {
+ start_line = start_line->prev;
+ (void) line_delete(start_line->next);
+ line_cnt++;
+ }
+ else { /* Install new text */
+ free_space(start_line->text);
+ start_line->text = alloc(length_of(text_buffer) + 1);
+ copy_string(start_line->text, text_buffer);
+ }
+
+/* Fix screen. First check if line is shifted. Perhaps we should shift it back*/
+ if (get_shift(start_line->shift_count)) {
+ shift = (XBREAK - count_chars(start_line)) / SHIFT_SIZE;
+ if (shift > 0) { /* Shift line `shift' back */
+ if (shift >= get_shift(start_line->shift_count))
+ start_line->shift_count = 0;
+ else
+ start_line->shift_count -= shift;
+ nx += shift * SHIFT_SIZE;/* Reset x value */
+ }
+ }
+
+ if (line_cnt == 0) { /* Check if only one line changed */
+ if (shift > 0) { /* Reprint whole line */
+ set_cursor(0, y);
+ line_print(start_line);
+ }
+ else { /* Just display last part of line */
+ set_cursor(x, y);
+ put_line(start_line, x, TRUE);
+ }
+ move_to(nx, y); /* Reset cur_text */
+ return;
+ }
+
+ shift = last_y; /* Save value */
+ reset(top_line, y);
+ display(0, y, start_line, shift - y);
+ move_to((line_cnt == 1) ? nx : 0, y);
+}
+
+/* ======================================================================== *
+ * Yank Commands *
+ * ======================================================================== */
+
+LINE *mark_line; /* For marking position. */
+char *mark_text;
+int lines_saved; /* Nr of lines in buffer */
+
+/*
+ * PT() inserts the buffer at the current location.
+ */
+void PT()
+{
+ register int fd; /* File descriptor for buffer */
+
+ if ((fd = scratch_file(READ)) == ERRORS)
+ error("Buffer is empty.", NIL_PTR);
+ else {
+ file_insert(fd, FALSE);/* Insert the buffer */
+ (void) close(fd);
+ }
+}
+
+/*
+ * IF() prompt for a filename and inserts the file at the current location
+ * in the file.
+ */
+void IF()
+{
+ register int fd; /* File descriptor of file */
+ char name[LINE_LEN]; /* Buffer for file name */
+
+/* Get the file name */
+ if (get_file("Get and insert file:", name) != FINE)
+ return;
+
+ if ((fd = open(name, 0)) < 0)
+ error("Cannot open ", name);
+ else {
+ file_insert(fd, TRUE); /* Insert the file */
+ (void) close(fd);
+ }
+}
+
+/*
+ * File_insert() inserts a an opened file (as given by filedescriptor fd)
+ * at the current location.
+ */
+void file_insert(fd, old_pos)
+int fd;
+FLAG old_pos;
+{
+ char line_buffer[MAX_CHARS]; /* Buffer for next line */
+ register LINE *line = cur_line;
+ register int line_count = nlines; /* Nr of lines inserted */
+ LINE *page = cur_line;
+ int ret = ERRORS;
+
+/* Get the first piece of text (might be ended with a '\n') from fd */
+ if (get_line(fd, line_buffer) == ERRORS)
+ return; /* Empty file */
+
+/* Insert this text at the current location. */
+ if (insert(line, cur_text, line_buffer) == ERRORS)
+ return;
+
+/* Repeat getting lines (and inserting lines) until EOF is reached */
+ while ((ret = get_line(fd, line_buffer)) != ERRORS && ret != NO_LINE)
+ line = line_insert(line, line_buffer, ret);
+
+ if (ret == NO_LINE) { /* Last line read not ended by a '\n' */
+ line = line->next;
+ (void) insert(line, line->text, line_buffer);
+ }
+
+/* Calculate nr of lines added */
+ line_count = nlines - line_count;
+
+/* Fix the screen */
+ if (line_count == 0) { /* Only one line changed */
+ set_cursor(0, y);
+ line_print(line);
+ move_to((old_pos == TRUE) ? x : x + length_of(line_buffer), y);
+ }
+ else { /* Several lines changed */
+ reset(top_line, y); /* Reset pointers */
+ while (page != line && page != bot_line->next)
+ page = page->next;
+ if (page != bot_line->next || old_pos == TRUE)
+ display(0, y, cur_line, screenmax - y);
+ if (old_pos == TRUE)
+ move_to(x, y);
+ else if (ret == NO_LINE)
+ move_to(length_of(line_buffer), find_y(line));
+ else
+ move_to(0, find_y(line->next));
+ }
+
+/* If nr of added line >= REPORT, print the count */
+ if (line_count >= REPORT)
+ status_line(num_out((long) line_count), " lines added.");
+}
+
+/*
+ * WB() writes the buffer (yank_file) into another file, which
+ * is prompted for.
+ */
+void WB()
+{
+ register int new_fd; /* Filedescriptor to copy file */
+ int yank_fd; /* Filedescriptor to buffer */
+ register int cnt; /* Count check for read/write */
+ int ret = 0; /* Error check for write */
+ char file[LINE_LEN]; /* Output file */
+
+/* Checkout the buffer */
+ if ((yank_fd = scratch_file(READ)) == ERRORS) {
+ error("Buffer is empty.", NIL_PTR);
+ return;
+ }
+
+/* Get file name */
+ if (get_file("Write buffer to file:", file) != FINE)
+ return;
+
+/* Creat the new file */
+ if ((new_fd = creat(file, 0644)) < 0) {
+ error("Cannot create ", file);
+ return;
+ }
+
+ status_line("Writing ", file);
+
+/* Copy buffer into file */
+ while ((cnt = read(yank_fd, text_buffer, sizeof(text_buffer))) > 0)
+ if (write(new_fd, text_buffer, cnt) != cnt) {
+ bad_write(new_fd);
+ ret = ERRORS;
+ break;
+ }
+
+/* Clean up open files and status_line */
+ (void) close(new_fd);
+ (void) close(yank_fd);
+
+ if (ret != ERRORS) /* Bad write */
+ file_status("Wrote", chars_saved, file, lines_saved, TRUE, FALSE);
+}
+
+/*
+ * MA sets mark_line (mark_text) to the current line (text pointer).
+ */
+void MA()
+{
+ mark_line = cur_line;
+ mark_text = cur_text;
+ status_line("Mark set", NIL_PTR);
+}
+
+/*
+ * YA() puts the text between the marked position and the current
+ * in the buffer.
+ */
+void YA()
+{
+ set_up(NO_DELETE);
+}
+
+/*
+ * DT() is essentially the same as YA(), but in DT() the text is deleted.
+ */
+void DT()
+{
+ set_up(DELETE);
+}
+
+/*
+ * Set_up is an interface to the actual yank. It calls checkmark () to check
+ * if the marked position is still valid. If it is, yank is called with the
+ * arguments in the right order.
+ */
+void set_up(remove)
+FLAG remove; /* DELETE if text should be deleted */
+{
+ switch (checkmark()) {
+ case NOT_VALID :
+ error("Mark not set.", NIL_PTR);
+ return;
+ case SMALLER :
+ yank(mark_line, mark_text, cur_line, cur_text, remove);
+ break;
+ case BIGGER :
+ yank(cur_line, cur_text, mark_line, mark_text, remove);
+ break;
+ case SAME : /* Ignore stupid behaviour */
+ yank_status = EMPTY;
+ chars_saved = 0L;
+ status_line("0 characters saved in buffer.", NIL_PTR);
+ break;
+ }
+}
+
+/*
+ * Check_mark() checks if mark_line and mark_text are still valid pointers. If
+ * they are it returns SMALLER if the marked position is before the current,
+ * BIGGER if it isn't or SAME if somebody didn't get the point.
+ * NOT_VALID is returned when mark_line and/or mark_text are no longer valid.
+ * Legal() checks if mark_text is valid on the mark_line.
+ */
+FLAG checkmark()
+{
+ register LINE *line;
+ FLAG cur_seen = FALSE;
+
+/* Special case: check is mark_line and cur_line are the same. */
+ if (mark_line == cur_line) {
+ if (mark_text == cur_text) /* Even same place */
+ return SAME;
+ if (legal() == ERRORS) /* mark_text out of range */
+ return NOT_VALID;
+ return (mark_text < cur_text) ? SMALLER : BIGGER;
+ }
+
+/* Start looking for mark_line in the line structure */
+ for (line = header->next; line != tail; line = line->next) {
+ if (line == cur_line)
+ cur_seen = TRUE;
+ else if (line == mark_line)
+ break;
+ }
+
+/* If we found mark_line (line != tail) check for legality of mark_text */
+ if (line == tail || legal() == ERRORS)
+ return NOT_VALID;
+
+/* cur_seen is TRUE if cur_line is before mark_line */
+ return (cur_seen == TRUE) ? BIGGER : SMALLER;
+}
+
+/*
+ * Legal() checks if mark_text is still a valid pointer.
+ */
+int legal()
+{
+ register char *textp = mark_line->text;
+
+/* Locate mark_text on mark_line */
+ while (textp != mark_text && *textp++ != '\0')
+ ;
+ return (*textp == '\0') ? ERRORS : FINE;
+}
+
+/*
+ * Yank puts all the text between start_position and end_position into
+ * the buffer.
+ * The caller must check that the arguments to yank() are valid. (E.g. in
+ * the right order)
+ */
+void yank(start_line, start_textp, end_line, end_textp, remove)
+LINE *start_line, *end_line;
+char *start_textp, *end_textp;
+FLAG remove; /* DELETE if text should be deleted */
+{
+ register LINE *line = start_line;
+ register char *textp = start_textp;
+ int fd;
+
+/* Creat file to hold buffer */
+ if ((fd = scratch_file(WRITE)) == ERRORS)
+ return;
+
+ chars_saved = 0L;
+ lines_saved = 0;
+ status_line("Saving text.", NIL_PTR);
+
+/* Keep writing chars until the end_location is reached. */
+ while (textp != end_textp) {
+ if (write_char(fd, *textp) == ERRORS) {
+ (void) close(fd);
+ return;
+ }
+ if (*textp++ == '\n') { /* Move to the next line */
+ line = line->next;
+ textp = line->text;
+ lines_saved++;
+ }
+ chars_saved++;
+ }
+
+/* Flush the I/O buffer and close file */
+ if (flush_buffer(fd) == ERRORS) {
+ (void) close(fd);
+ return;
+ }
+ (void) close(fd);
+ yank_status = VALID;
+
+/*
+ * Check if the text should be deleted as well. If it should, the following
+ * hack is used to save a lot of code. First move back to the start_position.
+ * (This might be the location we're on now!) and them delete the text.
+ * It might be a bit confusing the first time somebody uses it.
+ * Delete() will fix the screen.
+ */
+ if (remove == DELETE) {
+ move_to(find_x(start_line, start_textp), find_y(start_line));
+ delete(start_line, start_textp, end_line, end_textp);
+ }
+
+ status_line(num_out(chars_saved), " characters saved in buffer.");
+}
+
+/*
+ * Scratch_file() creates a uniq file in /usr/tmp. If the file couldn't
+ * be created other combinations of files are tried until a maximum
+ * of MAXTRAILS times. After MAXTRAILS times, an error message is given
+ * and ERRORS is returned.
+ */
+
+#define MAXTRAILS 26
+
+int scratch_file(mode)
+FLAG mode; /* Can be READ or WRITE permission */
+{
+ static int trials = 0; /* Keep track of trails */
+ register char *y_ptr, *n_ptr;
+ int fd; /* Filedescriptor to buffer */
+
+/* If yank_status == NOT_VALID, scratch_file is called for the first time */
+ if (yank_status == NOT_VALID && mode == WRITE) { /* Create new file */
+ /* Generate file name. */
+ y_ptr = &yank_file[11];
+ n_ptr = num_out((long) getpid());
+ while ((*y_ptr = *n_ptr++) != '\0')
+ y_ptr++;
+ *y_ptr++ = 'a' + trials;
+ *y_ptr = '\0';
+ /* Check file existence */
+ if (access(yank_file, 0) == 0 || (fd = creat(yank_file, 0644)) < 0) {
+ if (trials++ >= MAXTRAILS) {
+ error("Unable to creat scratchfile.", NIL_PTR);
+ return ERRORS;
+ }
+ else
+ return scratch_file(mode);/* Have another go */
+ }
+ }
+ else if ((mode == READ && (fd = open(yank_file, 0)) < 0) ||
+ (mode == WRITE && (fd = creat(yank_file, 0644)) < 0)) {
+ yank_status = NOT_VALID;
+ return ERRORS;
+ }
+
+ clear_buffer();
+ return fd;
+}
+
+/* ======================================================================== *
+ * Search Routines *
+ * ======================================================================== */
+
+/*
+ * A regular expression consists of a sequence of:
+ * 1. A normal character matching that character.
+ * 2. A . matching any character.
+ * 3. A ^ matching the begin of a line.
+ * 4. A $ (as last character of the pattern) mathing the end of a line.
+ * 5. A \<character> matching <character>.
+ * 6. A number of characters enclosed in [] pairs matching any of these
+ * characters. A list of characters can be indicated by a '-'. So
+ * [a-z] matches any letter of the alphabet. If the first character
+ * after the '[' is a '^' then the set is negated (matching none of
+ * the characters).
+ * A ']', '^' or '-' can be escaped by putting a '\' in front of it.
+ * 7. If one of the expressions as described in 1-6 is followed by a
+ * '*' than that expressions matches a sequence of 0 or more of
+ * that expression.
+ */
+
+char typed_expression[LINE_LEN]; /* Holds previous expr. */
+
+/*
+ * SF searches forward for an expression.
+ */
+void SF()
+{
+ search("Search forward:", FORWARD);
+}
+
+/*
+ * SF searches backwards for an expression.
+ */
+void SR()
+{
+ search("Search reverse:", REVERSE);
+}
+
+/*
+ * Get_expression() prompts for an expression. If just a return is typed, the
+ * old expression is used. If the expression changed, compile() is called and
+ * the returning REGEX structure is returned. It returns NIL_REG upon error.
+ * The save flag indicates whether the expression should be appended at the
+ * message pointer.
+ */
+REGEX *get_expression(message)
+char *message;
+{
+ static REGEX program; /* Program of expression */
+ char exp_buf[LINE_LEN]; /* Buffer for new expr. */
+
+ if (get_string(message, exp_buf, FALSE) == ERRORS)
+ return NIL_REG;
+
+ if (exp_buf[0] == '\0' && typed_expression[0] == '\0') {
+ error("No previous expression.", NIL_PTR);
+ return NIL_REG;
+ }
+
+ if (exp_buf[0] != '\0') { /* A new expr. is typed */
+ copy_string(typed_expression, exp_buf);/* Save expr. */
+ compile(exp_buf, &program); /* Compile new expression */
+ }
+
+ if (program.status == REG_ERROR) { /* Error during compiling */
+ error(program.result.err_mess, NIL_PTR);
+ return NIL_REG;
+ }
+ return &program;
+}
+
+/*
+ * GR() a replaces all matches from the current position until the end
+ * of the file.
+ */
+void GR()
+{
+ change("Global replace:", VALID);
+}
+
+/*
+ * LR() replaces all matches on the current line.
+ */
+void LR()
+{
+ change("Line replace:", NOT_VALID);
+}
+
+/*
+ * Change() prompts for an expression and a substitution pattern and changes
+ * all matches of the expression into the substitution. change() start looking
+ * for expressions at the current line and continues until the end of the file
+ * if the FLAG file is VALID.
+ */
+void change(message, file)
+char *message; /* Message to prompt for expression */
+FLAG file;
+{
+ char mess_buf[LINE_LEN]; /* Buffer to hold message */
+ char replacement[LINE_LEN]; /* Buffer to hold subst. pattern */
+ REGEX *program; /* Program resulting from compilation */
+ register LINE *line = cur_line;
+ register char *textp;
+ long lines = 0L; /* Nr of lines on which subs occurred */
+ long subs = 0L; /* Nr of subs made */
+ int page = y; /* Index to check if line is on screen*/
+
+/* Save message and get expression */
+ copy_string(mess_buf, message);
+ if ((program = get_expression(mess_buf)) == NIL_REG)
+ return;
+
+/* Get substitution pattern */
+ build_string(mess_buf, "%s %s by:", mess_buf, typed_expression);
+ if (get_string(mess_buf, replacement, FALSE) == ERRORS)
+ return;
+
+ set_cursor(0, ymax);
+ flush();
+/* Substitute until end of file */
+ do {
+ if (line_check(program, line->text, FORWARD)) {
+ lines++;
+ /* Repeat sub. on this line as long as we find a match*/
+ do {
+ subs++; /* Increment subs */
+ if ((textp = substitute(line, program,replacement))
+ == NIL_PTR)
+ return; /* Line too long */
+ } while ((program->status & BEGIN_LINE) != BEGIN_LINE &&
+ (program->status & END_LINE) != END_LINE &&
+ line_check(program, textp, FORWARD));
+ /* Check to see if we can print the result */
+ if (page <= screenmax) {
+ set_cursor(0, page);
+ line_print(line);
+ }
+ }
+ if (page <= screenmax)
+ page++;
+ line = line->next;
+ } while (line != tail && file == VALID && quit == FALSE);
+
+ copy_string(mess_buf, (quit == TRUE) ? "(Aborted) " : "");
+/* Fix the status line */
+ if (subs == 0L && quit == FALSE)
+ error("Pattern not found.", NIL_PTR);
+ else if (lines >= REPORT || quit == TRUE) {
+ build_string(mess_buf, "%s %D substitutions on %D lines.", mess_buf,
+ subs, lines);
+ status_line(mess_buf, NIL_PTR);
+ }
+ else if (file == NOT_VALID && subs >= REPORT)
+ status_line(num_out(subs), " substitutions.");
+ else
+ clear_status();
+ move_to (x, y);
+}
+
+/*
+ * Substitute() replaces the match on this line by the substitute pattern
+ * as indicated by the program. Every '&' in the replacement is replaced by
+ * the original match. A \ in the replacement escapes the next character.
+ */
+char *substitute(line, program, replacement)
+LINE *line;
+REGEX *program;
+char *replacement; /* Contains replacement pattern */
+{
+ register char *textp = text_buffer;
+ register char *subp = replacement;
+ char *linep = line->text;
+ char *amp;
+
+ modified = TRUE;
+
+/* Copy part of line until the beginning of the match */
+ while (linep != program->start_ptr)
+ *textp++ = *linep++;
+
+/*
+ * Replace the match by the substitution pattern. Each occurrence of '&' is
+ * replaced by the original match. A \ escapes the next character.
+ */
+ while (*subp != '\0' && textp < &text_buffer[MAX_CHARS]) {
+ if (*subp == '&') { /* Replace the original match */
+ amp = program->start_ptr;
+ while (amp < program->end_ptr && textp<&text_buffer[MAX_CHARS])
+ *textp++ = *amp++;
+ subp++;
+ }
+ else {
+ if (*subp == '\\' && *(subp + 1) != '\0')
+ subp++;
+ *textp++ = *subp++;
+ }
+ }
+
+/* Check for line length not exceeding MAX_CHARS */
+ if (length_of(text_buffer) + length_of(program->end_ptr) >= MAX_CHARS) {
+ error("Substitution result: line too big", NIL_PTR);
+ return NIL_PTR;
+ }
+
+/* Append last part of line to the new build line */
+ copy_string(textp, program->end_ptr);
+
+/* Free old line and install new one */
+ free_space(line->text);
+ line->text = alloc(length_of(text_buffer) + 1);
+ copy_string(line->text, text_buffer);
+
+ return(line->text + (textp - text_buffer));
+}
+
+/*
+ * Search() calls get_expression to fetch the expression. If this went well,
+ * the function match() is called which returns the line with the next match.
+ * If this line is the NIL_LINE, it means that a match could not be found.
+ * Find_x() and find_y() display the right page on the screen, and return
+ * the right coordinates for x and y. These coordinates are passed to move_to()
+ */
+void search(message, method)
+char *message;
+FLAG method;
+{
+ register REGEX *program;
+ register LINE *match_line;
+
+/* Get the expression */
+ if ((program = get_expression(message)) == NIL_REG)
+ return;
+
+ set_cursor(0, ymax);
+ flush();
+/* Find the match */
+ if ((match_line = match(program, cur_text, method)) == NIL_LINE) {
+ if (quit == TRUE)
+ status_line("Aborted", NIL_PTR);
+ else
+ status_line("Pattern not found.", NIL_PTR);
+ return;
+ }
+
+ move(0, program->start_ptr, find_y(match_line));
+ clear_status();
+}
+
+/*
+ * find_y() checks if the matched line is on the current page. If it is, it
+ * returns the new y coordinate, else it displays the correct page with the
+ * matched line in the middle and returns the new y value;
+ */
+int find_y(match_line)
+LINE *match_line;
+{
+ register LINE *line;
+ register int count = 0;
+
+/* Check if match_line is on the same page as currently displayed. */
+ for (line = top_line; line != match_line && line != bot_line->next;
+ line = line->next)
+ count++;
+ if (line != bot_line->next)
+ return count;
+
+/* Display new page, with match_line in center. */
+ if ((line = proceed(match_line, -(screenmax >> 1))) == header) {
+ /* Can't display in the middle. Make first line of file top_line */
+ count = 0;
+ for (line = header->next; line != match_line; line = line->next)
+ count++;
+ line = header->next;
+ }
+ else /* New page is displayed. Set cursor to middle of page */
+ count = screenmax >> 1;
+
+/* Reset pointers and redraw the screen */
+ reset(line, 0);
+ RD();
+
+ return count;
+}
+
+/* Opcodes for characters */
+#define NORMAL 0x0200
+#define DOT 0x0400
+#define EOLN 0x0800
+#define STAR 0x1000
+#define BRACKET 0x2000
+#define NEGATE 0x0100
+#define DONE 0x4000
+
+/* Mask for opcodes and characters */
+#define LOW_BYTE 0x00FF
+#define HIGH_BYTE 0xFF00
+
+/* Previous is the contents of the previous address (ptr) points to */
+#define previous(ptr) (*((ptr) - 1))
+
+/* Buffer to store outcome of compilation */
+int exp_buffer[BLOCK_SIZE];
+
+/* Errors often used */
+char *too_long = "Regular expression too long";
+
+/*
+ * Reg_error() is called by compile() is something went wrong. It set the
+ * status of the structure to error, and assigns the error field of the union.
+ */
+#define reg_error(str) program->status = REG_ERROR, \
+ program->result.err_mess = (str)
+/*
+ * Finished() is called when everything went right during compilation. It
+ * allocates space for the expression, and copies the expression buffer into
+ * this field.
+ */
+void finished(program, last_exp)
+register REGEX *program;
+int *last_exp;
+{
+ register int length = (last_exp - exp_buffer) * sizeof(int);
+
+/* Allocate space */
+ program->result.expression = (int *) alloc(length);
+/* Copy expression. (expression consists of ints!) */
+ bcopy(exp_buffer, program->result.expression, length);
+}
+
+/*
+ * Compile compiles the pattern into a more comprehensible form and returns a
+ * REGEX structure. If something went wrong, the status field of the structure
+ * is set to REG_ERROR and an error message is set into the err_mess field of
+ * the union. If all went well the expression is saved and the expression
+ * pointer is set to the saved (and compiled) expression.
+ */
+void compile(pattern, program)
+register char *pattern; /* Pointer to pattern */
+REGEX *program;
+{
+ register int *expression = exp_buffer;
+ int *prev_char; /* Pointer to previous compiled atom */
+ int *acct_field; /* Pointer to last BRACKET start */
+ FLAG negate; /* Negate flag for BRACKET */
+ char low_char; /* Index for chars in BRACKET */
+ char c;
+
+/* Check for begin of line */
+ if (*pattern == '^') {
+ program->status = BEGIN_LINE;
+ pattern++;
+ }
+ else {
+ program->status = 0;
+/* If the first character is a '*' we have to assign it here. */
+ if (*pattern == '*') {
+ *expression++ = '*' + NORMAL;
+ pattern++;
+ }
+ }
+
+ for (; ;) {
+ switch (c = *pattern++) {
+ case '.' :
+ *expression++ = DOT;
+ break;
+ case '$' :
+ /*
+ * Only means EOLN if it is the last char of the pattern
+ */
+ if (*pattern == '\0') {
+ *expression++ = EOLN | DONE;
+ program->status |= END_LINE;
+ finished(program, expression);
+ return;
+ }
+ else
+ *expression++ = NORMAL + '$';
+ break;
+ case '\0' :
+ *expression++ = DONE;
+ finished(program, expression);
+ return;
+ case '\\' :
+ /* If last char, it must! mean a normal '\' */
+ if (*pattern == '\0')
+ *expression++ = NORMAL + '\\';
+ else
+ *expression++ = NORMAL + *pattern++;
+ break;
+ case '*' :
+ /*
+ * If the previous expression was a [] find out the
+ * begin of the list, and adjust the opcode.
+ */
+ prev_char = expression - 1;
+ if (*prev_char & BRACKET)
+ *(expression - (*acct_field & LOW_BYTE))|= STAR;
+ else
+ *prev_char |= STAR;
+ break;
+ case '[' :
+ /*
+ * First field in expression gives information about
+ * the list.
+ * The opcode consists of BRACKET and if necessary
+ * NEGATE to indicate that the list should be negated
+ * and/or STAR to indicate a number of sequence of this
+ * list.
+ * The lower byte contains the length of the list.
+ */
+ acct_field = expression++;
+ if (*pattern == '^') { /* List must be negated */
+ pattern++;
+ negate = TRUE;
+ }
+ else
+ negate = FALSE;
+ while (*pattern != ']') {
+ if (*pattern == '\0') {
+ reg_error("Missing ]");
+ return;
+ }
+ if (*pattern == '\\')
+ pattern++;
+ *expression++ = *pattern++;
+ if (*pattern == '-') {
+ /* Make list of chars */
+ low_char = previous(pattern);
+ pattern++; /* Skip '-' */
+ if (low_char++ > *pattern) {
+ reg_error("Bad range in [a-z]");
+ return;
+ }
+ /* Build list */
+ while (low_char <= *pattern)
+ *expression++ = low_char++;
+ pattern++;
+ }
+ if (expression >= &exp_buffer[BLOCK_SIZE]) {
+ reg_error(too_long);
+ return;
+ }
+ }
+ pattern++; /* Skip ']' */
+ /* Assign length of list in acct field */
+ if ((*acct_field = (expression - acct_field)) == 1) {
+ reg_error("Empty []");
+ return;
+ }
+ /* Assign negate and bracket field */
+ *acct_field |= BRACKET;
+ if (negate == TRUE)
+ *acct_field |= NEGATE;
+ /*
+ * Add BRACKET to opcode of last char in field because
+ * a '*' may be following the list.
+ */
+ previous(expression) |= BRACKET;
+ break;
+ default :
+ *expression++ = c + NORMAL;
+ }
+ if (expression == &exp_buffer[BLOCK_SIZE]) {
+ reg_error(too_long);
+ return;
+ }
+ }
+ /* NOTREACHED */
+}
+
+/*
+ * Match gets as argument the program, pointer to place in current line to
+ * start from and the method to search for (either FORWARD or REVERSE).
+ * Match() will look through the whole file until a match is found.
+ * NIL_LINE is returned if no match could be found.
+ */
+LINE *match(program, string, method)
+REGEX *program;
+char *string;
+register FLAG method;
+{
+ register LINE *line = cur_line;
+ char old_char; /* For saving chars */
+
+/* Corrupted program */
+ if (program->status == REG_ERROR)
+ return NIL_LINE;
+
+/* Check part of text first */
+ if (!(program->status & BEGIN_LINE)) {
+ if (method == FORWARD) {
+ if (line_check(program, string + 1, method) == MATCH)
+ return cur_line; /* Match found */
+ }
+ else if (!(program->status & END_LINE)) {
+ old_char = *string; /* Save char and */
+ *string = '\n'; /* Assign '\n' for line_check */
+ if (line_check(program, line->text, method) == MATCH) {
+ *string = old_char; /* Restore char */
+ return cur_line; /* Found match */
+ }
+ *string = old_char; /* No match, but restore char */
+ }
+ }
+
+/* No match in last (or first) part of line. Check out rest of file */
+ do {
+ line = (method == FORWARD) ? line->next : line->prev;
+ if (line->text == NIL_PTR) /* Header/tail */
+ continue;
+ if (line_check(program, line->text, method) == MATCH)
+ return line;
+ } while (line != cur_line && quit == FALSE);
+
+/* No match found. */
+ return NIL_LINE;
+}
+
+/*
+ * Line_check() checks the line (or rather string) for a match. Method
+ * indicates FORWARD or REVERSE search. It scans through the whole string
+ * until a match is found, or the end of the string is reached.
+ */
+int line_check(program, string, method)
+register REGEX *program;
+char *string;
+FLAG method;
+{
+ register char *textp = string;
+
+/* Assign start_ptr field. We might find a match right away! */
+ program->start_ptr = textp;
+
+/* If the match must be anchored, just check the string. */
+ if (program->status & BEGIN_LINE)
+ return check_string(program, string, NIL_INT);
+
+ if (method == REVERSE) {
+ /* First move to the end of the string */
+ for (textp = string; *textp != '\n'; textp++)
+ ;
+ /* Start checking string until the begin of the string is met */
+ while (textp >= string) {
+ program->start_ptr = textp;
+ if (check_string(program, textp--, NIL_INT))
+ return MATCH;
+ }
+ }
+ else {
+ /* Move through the string until the end of is found */
+ while (quit == FALSE && *textp != '\0') {
+ program->start_ptr = textp;
+ if (check_string(program, textp, NIL_INT))
+ return MATCH;
+ if (*textp == '\n')
+ break;
+ textp++;
+ }
+ }
+
+ return NO_MATCH;
+}
+
+/*
+ * Check() checks of a match can be found in the given string. Whenever a STAR
+ * is found during matching, then the begin position of the string is marked
+ * and the maximum number of matches is performed. Then the function star()
+ * is called which starts to finish the match from this position of the string
+ * (and expression). Check() return MATCH for a match, NO_MATCH is the string
+ * couldn't be matched or REG_ERROR for an illegal opcode in expression.
+ */
+int check_string(program, string, expression)
+REGEX *program;
+register char *string;
+int *expression;
+{
+ register int opcode; /* Holds opcode of next expr. atom */
+ char c; /* Char that must be matched */
+ char *mark; /* For marking position */
+ int star_fl; /* A star has been born */
+
+ if (expression == NIL_INT)
+ expression = program->result.expression;
+
+/* Loop until end of string or end of expression */
+ while (quit == FALSE && !(*expression & DONE) &&
+ *string != '\0' && *string != '\n') {
+ c = *expression & LOW_BYTE; /* Extract match char */
+ opcode = *expression & HIGH_BYTE; /* Extract opcode */
+ if (star_fl = (opcode & STAR)) { /* Check star occurrence */
+ opcode &= ~STAR; /* Strip opcode */
+ mark = string; /* Mark current position */
+ }
+ expression++; /* Increment expr. */
+ switch (opcode) {
+ case NORMAL :
+ if (star_fl)
+ while (*string++ == c) /* Skip all matches */
+ ;
+ else if (*string++ != c)
+ return NO_MATCH;
+ break;
+ case DOT :
+ string++;
+ if (star_fl) /* Skip to eoln */
+ while (*string != '\0' && *string++ != '\n')
+ ;
+ break;
+ case NEGATE | BRACKET:
+ case BRACKET :
+ if (star_fl)
+ while (in_list(expression, *string++, c, opcode)
+ == MATCH)
+ ;
+ else if (in_list(expression, *string++, c, opcode) == NO_MATCH)
+ return NO_MATCH;
+ expression += c - 1; /* Add length of list */
+ break;
+ default :
+ panic("Corrupted program in check_string()");
+ }
+ if (star_fl)
+ return star(program, mark, string, expression);
+ }
+ if (*expression & DONE) {
+ program->end_ptr = string; /* Match ends here */
+ /*
+ * We might have found a match. The last thing to do is check
+ * whether a '$' was given at the end of the expression, or
+ * the match was found on a null string. (E.g. [a-z]* always
+ * matches) unless a ^ or $ was included in the pattern.
+ */
+ if ((*expression & EOLN) && *string != '\n' && *string != '\0')
+ return NO_MATCH;
+ if (string == program->start_ptr && !(program->status & BEGIN_LINE)
+ && !(*expression & EOLN))
+ return NO_MATCH;
+ return MATCH;
+ }
+ return NO_MATCH;
+}
+
+/*
+ * Star() calls check_string() to find out the longest match possible.
+ * It searches backwards until the (in check_string()) marked position
+ * is reached, or a match is found.
+ */
+int star(program, end_position, string, expression)
+REGEX *program;
+register char *end_position;
+register char *string;
+int *expression;
+{
+ do {
+ string--;
+ if (check_string(program, string, expression))
+ return MATCH;
+ } while (string != end_position);
+
+ return NO_MATCH;
+}
+
+/*
+ * In_list() checks if the given character is in the list of []. If it is
+ * it returns MATCH. if it isn't it returns NO_MATCH. These returns values
+ * are reversed when the NEGATE field in the opcode is present.
+ */
+int in_list(list, c, list_length, opcode)
+register int *list;
+char c;
+register int list_length;
+int opcode;
+{
+ if (c == '\0' || c == '\n') /* End of string, never matches */
+ return NO_MATCH;
+ while (list_length-- > 1) { /* > 1, don't check acct_field */
+ if ((*list & LOW_BYTE) == c)
+ return (opcode & NEGATE) ? NO_MATCH : MATCH;
+ list++;
+ }
+ return (opcode & NEGATE) ? MATCH : NO_MATCH;
+}
+
+/*
+ * Dummy_line() adds an empty line at the end of the file. This is sometimes
+ * useful in combination with the EF and DN command in combination with the
+ * Yank command set.
+ */
+void dummy_line()
+{
+ (void) line_insert(tail->prev, "\n", 1);
+ tail->prev->shift_count = DUMMY;
+ if (last_y != screenmax) {
+ last_y++;
+ bot_line = bot_line->next;
+ }
+}
diff --git a/release/picobsd/tinyware/msh/Makefile b/release/picobsd/tinyware/msh/Makefile
new file mode 100644
index 000000000000..26137d56068a
--- /dev/null
+++ b/release/picobsd/tinyware/msh/Makefile
@@ -0,0 +1,16 @@
+# Makefile for sh
+
+CFLAGS = -O2 #-D_POSIX_SOURCE
+LDFLAGS = -static
+
+OBJ = sh1.o sh2.o sh3.o sh4.o sh5.o sh6.o
+
+all: sh
+
+sh: $(OBJ)
+ cc $(LDFLAGS) -o $@ $(OBJ)
+
+$(OBJ): sh.h
+
+clean:
+ rm -f sh *.o *.bak core
diff --git a/release/picobsd/tinyware/msh/README b/release/picobsd/tinyware/msh/README
new file mode 100644
index 000000000000..5aa05f4a2b66
--- /dev/null
+++ b/release/picobsd/tinyware/msh/README
@@ -0,0 +1,13 @@
+Warsaw, 1998.10.21
+
+This is a port of Minix /bin/sh shell.
+
+It's quite limited, but also quite small. One of most serious
+limitations is lack of support for user-defined functions. Also,
+globbing should be implemented with our glob(3) - the version in
+sh4.c is rather primitive.
+
+Andrzej Bialecki
+<abial@FreeBSD.org>
+
+$Id$
diff --git a/release/picobsd/tinyware/msh/sh.1 b/release/picobsd/tinyware/msh/sh.1
new file mode 100644
index 000000000000..f19bce02cb7a
--- /dev/null
+++ b/release/picobsd/tinyware/msh/sh.1
@@ -0,0 +1,261 @@
+.TH SH 1
+.SH NAME
+sh, ., break, case, cd, continue, eval, exec, exit, export, for, if, read, readonly, set, shift, trap, umask, wait, while \- shell
+.SH SYNOPSIS
+\fBsh\fR [\fB\-eiknqstvxu\fR] [\fB\-c \fIstr\fR] \fB[\fIfile\fR]\fR
+.br
+.de FL
+.TP
+\\fB\\$1\\fR
+\\$2
+..
+.de EX
+.TP 20
+\\fB\\$1\\fR
+# \\$2
+..
+.SH OPTIONS
+.FL "\-c" "Execute the commands in \fIstr\fR"
+.FL "\-e" "Quit on error"
+.FL "\-i" "Interactive mode; ignore QUIT, TERMINATE, INTERRUPT"
+.FL "\-k" "Look for name=value everywhere on command line"
+.FL "\-n" "Do not execute commands"
+.FL "\-q" "Change qflag from sig_ign to sig_del"
+.FL "\-s" "Read commands from standard input"
+.FL "\-t" "Exit after reading and executing one command"
+.FL "\-v" "Echo input lines as they are read"
+.FL "\-x" "Trace"
+.FL "\-u" "Unset variables"
+.SH EXAMPLES
+.EX "sh script" "Run a shell script"
+.SH DESCRIPTION
+.PP
+.I Sh
+is the shell, which forms the user's main interface with the system.
+On startup, the shell reads /etc/profile and $HOME/.profile, if they exist,
+and executes any commands they contain. The Minix shell has most of the
+features of the V7 (Bourne) shell, including redirection of input and output,
+pipes, magic characters, background processes, and shell scripts. A brief
+summary follows, but whole books have been written on shell programming alone.
+.LP
+Some of the more common notations are:
+.PP
+.in +2.45i
+.ta 2i 2.2i
+.ti -2.2i
+date # Regular command
+.ti -2.2i
+sort <file # Redirect \fIstdin\fR (standard input)
+.ti -2.2i
+sort <file1 >file2 # Redirect \fIstdin\fR and \fIstdout\fR
+.ti -2.2i
+cc file.c 2>error # Redirect \fIstderr\fR
+.ti -2.2i
+a.out >f 2>&1 # Combine standard output and standard error
+.ti -2.2i
+sort <file1 >>file2 # Append output to \fIfile2\fR
+.ti -2.2i
+sort <file1 >file2 & # Background job
+.ti -2.2i
+(ls \-l; a.out) & # Run two background commands sequentially
+.ti -2.2i
+sort <file | wc # Two-process pipeline
+.ti -2.2i
+sort <f | uniq | wc # Three-process pipeline
+.ti -2.2i
+ls \-l *.c # List all files ending in \fI.c\fR
+.ti -2.2i
+ls \-l [\fIa-c\fR]* # List all files beginning with \fIa\fR, \fIb\fR, or \fIc\fR
+.ti -2.2i
+ls \-l ? # List all one-character file names
+.ti -2.2i
+ls \e? # List the file whose name is question mark
+.ti -2.2i
+ls \(fm???\(fm # List the file whose name is three question marks
+.ti -2.2i
+v=/usr/ast # Set shell variable \fIv\fR
+.ti -2.2i
+ls \-l $v # Use shell variable \fIv\fR
+.ti -2.2i
+PS1=\(fmHi! \(fm # Change the primary prompt to \fIHi!\fR
+.ti -2.2i
+PS2=\(fmMore: \(fm # Change the secondary prompt to \fIMore:\fR
+.ti -2.2i
+ls \-l $HOME # List the home directory
+.ti -2.2i
+echo $PATH # Echo the search path
+.ti -2.2i
+echo $? # Echo exit status of previous command in decimal
+.ti -2.2i
+echo $$ # Echo shell's pid in decimal
+.ti -2.2i
+echo $! # Echo PID of last background process
+.ti -2.2i
+echo $# # Echo number of parameters (shell script)
+.ti -2.2i
+echo $2 # Echo second parameter (shell script)
+.ti -2.2i
+echo "$2" # Echo second parameter without expanding spaces
+.ti -2.2i
+echo $* # Echo all parameters (shell script)
+.ti -2.2i
+echo $@ # Echo all parameters (shell script)
+.ti -2.2i
+echo "$@" # Echo all parameters without expanding spaces
+.in -2.45i
+.LP
+The shell uses the following variables for specific purposes:
+.PP
+.in +2.25i
+.ta 2i
+.ti -2i
+SHELL the path of the current shell
+.ti -2i
+HOME the default value for the cd(1) command
+.ti -2i
+PATH the directories to be searched to find commands
+.ti -2i
+IFS the internal field separators for command strings
+.ti -2i
+PS1 the primary shell prompt
+.ti -2i
+PS2 the secondary shell prompt
+.in -2.25i
+.LP
+There are various forms of substitution on the shell command line:
+.PP
+.in +2.25i
+.ta 2i
+.ti -2i
+`...` Command string between back-quotes is replaced by its output
+.ti -2i
+"..." Permits variable substitution between quotes
+.ti -2i
+\&'...' Inhibits variable substitution between quotes
+.ti -2i
+$VAR Replaced by contents of variable VAR
+.ti -2i
+${VAR} Delimits variable VAR from any following string
+.in -2.25i
+.LP
+The expressions below depend on whether or not VAR has ever been set.
+If VAR has been set, they give:
+.PP
+.in +2.25i
+.ta 2i
+.ti -2i
+${VAR-str} Replace expression by VAR, else by str
+.ti -2i
+${VAR=str} Replace expression by VAR, else by str and set VAR to str
+.ti -2i
+${VAR?str} Replace expression by VAR, else print str and exit shell
+.ti -2i
+${VAR+str} Replace expression by str, else by null string
+.in -2.25i
+.LP
+If a colon is placed after VAR, the expressions depend on whether or not
+VAR is currently set and non-null.
+.LP
+The shell has a number of built-in commands:
+.PP
+.in +2.25i
+.ta 2i
+.ti -2i
+: return true status
+.ti -2i
+\&. fn execute shell script fn on current path
+.ti -2i
+break [n] break from a for, until or while loop; exit n levels
+.ti -2i
+continue [n] continue a for, until or while loop; resume nth loop
+.ti -2i
+cd [dir] change current working directory; move to $HOME
+.ti -2i
+eval cmd rescan cmd, performing substitutions
+.ti -2i
+eval rescan the current command line
+.ti -2i
+exec cmd execute cmd without creating a new process
+.ti -2i
+exec <|> with no command name, modify shell I/O
+.ti -2i
+exit [n] exit a shell program, with exit value n
+.ti -2i
+export [var] export var to shell's children; list exported variables
+.ti -2i
+pwd print the name of the current working directory
+.ti -2i
+read var read a line from stdin and assign to var
+.ti -2i
+readonly [var] make var readonly; list readonly variables
+.ti -2i
+set -f set shell flag (+f unsets flag)
+.ti -2i
+set str set positional parameter to str
+.ti -2i
+set show the current shell variables
+.ti -2i
+shift reassign positional parameters (except ${0}) one left
+.ti -2i
+times print accumulated user and system times for processes
+.ti -2i
+trap arg sigs trap signals sigs and run arg on receipt
+.ti -2i
+trap list trapped signals
+.ti -2i
+umask [n] set the user file creation mask; show the current umask
+.ti -2i
+wait [n] wait for process pid n; wait for all processes
+.in -2.25i
+.LP
+The shell also contains a programming language, which has the following
+operators and flow control statements:
+.PP
+.in +3.50i
+.ta 2i 3.25i
+.ti -3.25i
+# Comment The rest of the line is ignored
+.ti -3.25i
+= Assignment Set a shell variable
+.ti -3.25i
+&& Logical AND Execute second command only if first succeeds
+.ti -3.25i
+|| Logical OR Execute second command only if first fails
+.ti -3.25i
+(...) Group Execute enclosed commands before continuing
+.in -3.50i
+.PP
+.in +2.25i
+.ta 2i
+.ti -2i
+for For loop (for ... in ... do ... done)
+.ti -2i
+case Case statement ((case ... ) ... ;; ... esac)
+.ti -2i
+esac Case statement end
+.ti -2i
+while While loop (while ... do ... done)
+.ti -2i
+do Do/For/While loop start (do ... until ...)
+.ti -2i
+done For/While loop end
+.ti -2i
+if Conditional statement (if ... else ... elif ... fi)
+.ti -2i
+in For loop selection
+.ti -2i
+then Conditional statement start
+.ti -2i
+else Conditional statement alternative
+.ti -2i
+elif Conditional statement end
+.ti -2i
+until Do loop end
+.ti -2i
+fi Conditional statement end
+.in -2.25i
+.SH "SEE ALSO"
+.BR echo (1),
+.BR expr (1),
+.BR pwd (1),
+.BR true (1).
diff --git a/release/picobsd/tinyware/msh/sh.h b/release/picobsd/tinyware/msh/sh.h
new file mode 100644
index 000000000000..223761eb18c7
--- /dev/null
+++ b/release/picobsd/tinyware/msh/sh.h
@@ -0,0 +1,388 @@
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+/* Need a way to have void used for ANSI, nothing for K&R. */
+#ifndef _ANSI
+#undef _VOID
+#define _VOID
+#endif
+
+/* -------- sh.h -------- */
+/*
+ * shell
+ */
+
+#define LINELIM 2100
+#define NPUSH 8 /* limit to input nesting */
+
+#define NOFILE 20 /* Number of open files */
+#define NUFILE 10 /* Number of user-accessible files */
+#define FDBASE 10 /* First file usable by Shell */
+
+/*
+ * values returned by wait
+ */
+#define WAITSIG(s) ((s)&0177)
+#define WAITVAL(s) (((s)>>8)&0377)
+#define WAITCORE(s) (((s)&0200)!=0)
+
+/*
+ * library and system defintions
+ */
+#ifdef __STDC__
+typedef void xint; /* base type of jmp_buf, for not broken compilers */
+#else
+typedef char * xint; /* base type of jmp_buf, for broken compilers */
+#endif
+
+/*
+ * shell components
+ */
+/* #include "area.h" */
+/* #include "word.h" */
+/* #include "io.h" */
+/* #include "var.h" */
+
+#define QUOTE 0200
+
+#define NOBLOCK ((struct op *)NULL)
+#define NOWORD ((char *)NULL)
+#define NOWORDS ((char **)NULL)
+#define NOPIPE ((int *)NULL)
+
+/*
+ * Description of a command or an operation on commands.
+ * Might eventually use a union.
+ */
+struct op {
+ int type; /* operation type, see below */
+ char **words; /* arguments to a command */
+ struct ioword **ioact; /* IO actions (eg, < > >>) */
+ struct op *left;
+ struct op *right;
+ char *str; /* identifier for case and for */
+};
+
+#define TCOM 1 /* command */
+#define TPAREN 2 /* (c-list) */
+#define TPIPE 3 /* a | b */
+#define TLIST 4 /* a [&;] b */
+#define TOR 5 /* || */
+#define TAND 6 /* && */
+#define TFOR 7
+#define TDO 8
+#define TCASE 9
+#define TIF 10
+#define TWHILE 11
+#define TUNTIL 12
+#define TELIF 13
+#define TPAT 14 /* pattern in case */
+#define TBRACE 15 /* {c-list} */
+#define TASYNC 16 /* c & */
+
+/*
+ * actions determining the environment of a process
+ */
+#define BIT(i) (1<<(i))
+#define FEXEC BIT(0) /* execute without forking */
+
+/*
+ * flags to control evaluation of words
+ */
+#define DOSUB 1 /* interpret $, `, and quotes */
+#define DOBLANK 2 /* perform blank interpretation */
+#define DOGLOB 4 /* interpret [?* */
+#define DOKEY 8 /* move words with `=' to 2nd arg. list */
+#define DOTRIM 16 /* trim resulting string */
+
+#define DOALL (DOSUB|DOBLANK|DOGLOB|DOKEY|DOTRIM)
+
+Extern char **dolv;
+Extern int dolc;
+Extern int exstat;
+Extern char gflg;
+Extern int talking; /* interactive (talking-type wireless) */
+Extern int execflg;
+Extern int multiline; /* \n changed to ; */
+Extern struct op *outtree; /* result from parser */
+
+Extern xint *failpt;
+Extern xint *errpt;
+
+struct brkcon {
+ jmp_buf brkpt;
+ struct brkcon *nextlev;
+} ;
+Extern struct brkcon *brklist;
+Extern int isbreak;
+
+/*
+ * redirection
+ */
+struct ioword {
+ short io_unit; /* unit affected */
+ short io_flag; /* action (below) */
+ char *io_name; /* file name */
+};
+#define IOREAD 1 /* < */
+#define IOHERE 2 /* << (here file) */
+#define IOWRITE 4 /* > */
+#define IOCAT 8 /* >> */
+#define IOXHERE 16 /* ${}, ` in << */
+#define IODUP 32 /* >&digit */
+#define IOCLOSE 64 /* >&- */
+
+#define IODEFAULT (-1) /* token for default IO unit */
+
+Extern struct wdblock *wdlist;
+Extern struct wdblock *iolist;
+
+/*
+ * parsing & execution environment
+ */
+extern struct env {
+ char *linep;
+ struct io *iobase;
+ struct io *iop;
+ xint *errpt;
+ int iofd;
+ struct env *oenv;
+} e;
+
+/*
+ * flags:
+ * -e: quit on error
+ * -k: look for name=value everywhere on command line
+ * -n: no execution
+ * -t: exit after reading and executing one command
+ * -v: echo as read
+ * -x: trace
+ * -u: unset variables net diagnostic
+ */
+extern char *flag;
+
+extern char *null; /* null value for variable */
+extern int intr; /* interrupt pending */
+
+Extern char *trap[_NSIG+1];
+Extern char ourtrap[_NSIG+1];
+Extern int trapset; /* trap pending */
+
+extern int heedint; /* heed interrupt signals */
+
+Extern int yynerrs; /* yacc */
+
+Extern char line[LINELIM];
+extern char *elinep;
+
+/*
+ * other functions
+ */
+#ifdef __STDC__
+int (*inbuilt(char *s ))(void);
+#else
+int (*inbuilt())();
+#endif
+
+#ifdef __FreeBSD__
+#define _PROTOTYPE(x,y) x ## y
+#endif
+
+_PROTOTYPE(char *rexecve , (char *c , char **v , char **envp ));
+_PROTOTYPE(char *space , (int n ));
+_PROTOTYPE(char *strsave , (char *s , int a ));
+_PROTOTYPE(char *evalstr , (char *cp , int f ));
+_PROTOTYPE(char *putn , (int n ));
+_PROTOTYPE(char *itoa , (unsigned u , int n ));
+_PROTOTYPE(char *unquote , (char *as ));
+_PROTOTYPE(struct var *lookup , (char *n ));
+_PROTOTYPE(int rlookup , (char *n ));
+_PROTOTYPE(struct wdblock *glob , (char *cp , struct wdblock *wb ));
+_PROTOTYPE(int subgetc , (int ec , int quoted ));
+_PROTOTYPE(char **makenv , (void));
+_PROTOTYPE(char **eval , (char **ap , int f ));
+_PROTOTYPE(int setstatus , (int s ));
+_PROTOTYPE(int waitfor , (int lastpid , int canintr ));
+
+_PROTOTYPE(void onintr , (int s )); /* SIGINT handler */
+
+_PROTOTYPE(int newenv , (int f ));
+_PROTOTYPE(void quitenv , (void));
+_PROTOTYPE(void err , (char *s ));
+_PROTOTYPE(int anys , (char *s1 , char *s2 ));
+_PROTOTYPE(int any , (int c , char *s ));
+_PROTOTYPE(void next , (int f ));
+_PROTOTYPE(void setdash , (void));
+_PROTOTYPE(void onecommand , (void));
+_PROTOTYPE(void runtrap , (int i ));
+_PROTOTYPE(void xfree , (char *s ));
+_PROTOTYPE(int letter , (int c ));
+_PROTOTYPE(int digit , (int c ));
+_PROTOTYPE(int letnum , (int c ));
+_PROTOTYPE(int gmatch , (char *s , char *p ));
+
+/*
+ * error handling
+ */
+_PROTOTYPE(void leave , (void)); /* abort shell (or fail in subshell) */
+_PROTOTYPE(void fail , (void)); /* fail but return to process next command */
+_PROTOTYPE(void warn , (char *s ));
+_PROTOTYPE(void sig , (int i )); /* default signal handler */
+
+/* -------- var.h -------- */
+
+struct var {
+ char *value;
+ char *name;
+ struct var *next;
+ char status;
+};
+#define COPYV 1 /* flag to setval, suggesting copy */
+#define RONLY 01 /* variable is read-only */
+#define EXPORT 02 /* variable is to be exported */
+#define GETCELL 04 /* name & value space was got with getcell */
+
+Extern struct var *vlist; /* dictionary */
+
+Extern struct var *homedir; /* home directory */
+Extern struct var *prompt; /* main prompt */
+Extern struct var *cprompt; /* continuation prompt */
+Extern struct var *path; /* search path for commands */
+Extern struct var *shell; /* shell to interpret command files */
+Extern struct var *ifs; /* field separators */
+
+_PROTOTYPE(int yyparse , (void));
+_PROTOTYPE(struct var *lookup , (char *n ));
+_PROTOTYPE(void setval , (struct var *vp , char *val ));
+_PROTOTYPE(void nameval , (struct var *vp , char *val , char *name ));
+_PROTOTYPE(void export , (struct var *vp ));
+_PROTOTYPE(void ronly , (struct var *vp ));
+_PROTOTYPE(int isassign , (char *s ));
+_PROTOTYPE(int checkname , (char *cp ));
+_PROTOTYPE(int assign , (char *s , int cf ));
+_PROTOTYPE(void putvlist , (int f , int out ));
+_PROTOTYPE(int eqname , (char *n1 , char *n2 ));
+
+_PROTOTYPE(int execute , (struct op *t , int *pin , int *pout , int act ));
+
+/* -------- io.h -------- */
+/* io buffer */
+struct iobuf {
+ unsigned id; /* buffer id */
+ char buf[512]; /* buffer */
+ char *bufp; /* pointer into buffer */
+ char *ebufp; /* pointer to end of buffer */
+};
+
+/* possible arguments to an IO function */
+struct ioarg {
+ char *aword;
+ char **awordlist;
+ int afile; /* file descriptor */
+ unsigned afid; /* buffer id */
+ long afpos; /* file position */
+ struct iobuf *afbuf; /* buffer for this file */
+};
+Extern struct ioarg ioargstack[NPUSH];
+#define AFID_NOBUF (~0)
+#define AFID_ID 0
+
+/* an input generator's state */
+struct io {
+ int (*iofn)(_VOID);
+ struct ioarg *argp;
+ int peekc;
+ char prev; /* previous character read by readc() */
+ char nlcount; /* for `'s */
+ char xchar; /* for `'s */
+ char task; /* reason for pushed IO */
+};
+Extern struct io iostack[NPUSH];
+#define XOTHER 0 /* none of the below */
+#define XDOLL 1 /* expanding ${} */
+#define XGRAVE 2 /* expanding `'s */
+#define XIO 3 /* file IO */
+
+/* in substitution */
+#define INSUB() (e.iop->task == XGRAVE || e.iop->task == XDOLL)
+
+/*
+ * input generators for IO structure
+ */
+_PROTOTYPE(int nlchar , (struct ioarg *ap ));
+_PROTOTYPE(int strchar , (struct ioarg *ap ));
+_PROTOTYPE(int qstrchar , (struct ioarg *ap ));
+_PROTOTYPE(int filechar , (struct ioarg *ap ));
+_PROTOTYPE(int herechar , (struct ioarg *ap ));
+_PROTOTYPE(int linechar , (struct ioarg *ap ));
+_PROTOTYPE(int gravechar , (struct ioarg *ap , struct io *iop ));
+_PROTOTYPE(int qgravechar , (struct ioarg *ap , struct io *iop ));
+_PROTOTYPE(int dolchar , (struct ioarg *ap ));
+_PROTOTYPE(int wdchar , (struct ioarg *ap ));
+_PROTOTYPE(void scraphere , (void));
+_PROTOTYPE(void freehere , (int area ));
+_PROTOTYPE(void gethere , (void));
+_PROTOTYPE(void markhere , (char *s , struct ioword *iop ));
+_PROTOTYPE(int herein , (char *hname , int xdoll ));
+_PROTOTYPE(int run , (struct ioarg *argp , int (*f)(_VOID)));
+
+/*
+ * IO functions
+ */
+_PROTOTYPE(int eofc , (void));
+_PROTOTYPE(int getc , (int ec ));
+_PROTOTYPE(int readc , (void));
+_PROTOTYPE(void unget , (int c ));
+_PROTOTYPE(void ioecho , (int c ));
+_PROTOTYPE(void prs , (char *s ));
+_PROTOTYPE(void putc , (int c ));
+_PROTOTYPE(void prn , (unsigned u ));
+_PROTOTYPE(void closef , (int i ));
+_PROTOTYPE(void closeall , (void));
+
+/*
+ * IO control
+ */
+_PROTOTYPE(void pushio , (struct ioarg *argp , int (*fn)(_VOID)));
+_PROTOTYPE(int remap , (int fd ));
+_PROTOTYPE(int openpipe , (int *pv ));
+_PROTOTYPE(void closepipe , (int *pv ));
+_PROTOTYPE(struct io *setbase , (struct io *ip ));
+
+extern struct ioarg temparg; /* temporary for PUSHIO */
+#define PUSHIO(what,arg,gen) ((temparg.what = (arg)),pushio(&temparg,(gen)))
+#define RUN(what,arg,gen) ((temparg.what = (arg)), run(&temparg,(gen)))
+
+/* -------- word.h -------- */
+#ifndef WORD_H
+#define WORD_H 1
+struct wdblock {
+ short w_bsize;
+ short w_nword;
+ /* bounds are arbitrary */
+ char *w_words[1];
+};
+
+_PROTOTYPE(struct wdblock *addword , (char *wd , struct wdblock *wb ));
+_PROTOTYPE(struct wdblock *newword , (int nw ));
+_PROTOTYPE(char **getwords , (struct wdblock *wb ));
+#endif
+
+/* -------- area.h -------- */
+
+/*
+ * storage allocation
+ */
+_PROTOTYPE(char *getcell , (unsigned nbytes ));
+_PROTOTYPE(void garbage , (void));
+_PROTOTYPE(void setarea , (char *cp , int a ));
+_PROTOTYPE(int getarea , (char *cp ));
+_PROTOTYPE(void freearea , (int a ));
+_PROTOTYPE(void freecell , (char *cp ));
+
+Extern int areanum; /* current allocation area */
+
+#define NEW(type) (type *)getcell(sizeof(type))
+#define DELETE(obj) freecell((char *)obj)
diff --git a/release/picobsd/tinyware/msh/sh1.c b/release/picobsd/tinyware/msh/sh1.c
new file mode 100644
index 000000000000..34b024df9c51
--- /dev/null
+++ b/release/picobsd/tinyware/msh/sh1.c
@@ -0,0 +1,953 @@
+#define Extern extern
+#include <sys/types.h>
+#include <signal.h>
+#define _NSIG NSIG
+#include <errno.h>
+#include <setjmp.h>
+#include "sh.h"
+/* -------- sh.c -------- */
+/*
+ * shell
+ */
+
+/* #include "sh.h" */
+
+int intr;
+int inparse;
+char flags['z'-'a'+1];
+char *flag = flags-'a';
+char *elinep = line+sizeof(line)-5;
+char *null = "";
+int heedint =1;
+struct env e ={line, iostack, iostack-1,
+ (xint *)NULL, FDBASE, (struct env *)NULL};
+
+extern char **environ; /* environment pointer */
+
+/*
+ * default shell, search rules
+ */
+char shellname[] = "/bin/sh";
+char search[] = ":/bin:/usr/bin";
+
+_PROTOTYPE(void (*qflag), (int)) = SIG_IGN;
+
+_PROTOTYPE(int main, (int argc, char **argv ));
+_PROTOTYPE(int newfile, (char *s ));
+_PROTOTYPE(static char *findeq, (char *cp ));
+_PROTOTYPE(static char *cclass, (char *p, int sub ));
+_PROTOTYPE(void initarea, (void));
+
+int main(argc, argv)
+int argc;
+register char **argv;
+{
+ register int f;
+ register char *s;
+ int cflag;
+ char *name, **ap;
+ int (*iof)();
+
+ initarea();
+ if ((ap = environ) != NULL) {
+ while (*ap)
+ assign(*ap++, !COPYV);
+ for (ap = environ; *ap;)
+ export(lookup(*ap++));
+ }
+ closeall();
+ areanum = 1;
+
+ shell = lookup("SHELL");
+ if (shell->value == null)
+ setval(shell, shellname);
+ export(shell);
+
+ homedir = lookup("HOME");
+ if (homedir->value == null)
+ setval(homedir, "/");
+ export(homedir);
+
+ setval(lookup("$"), itoa(getpid(), 5));
+
+ path = lookup("PATH");
+ if (path->value == null)
+ setval(path, search);
+ export(path);
+
+ ifs = lookup("IFS");
+ if (ifs->value == null)
+ setval(ifs, " \t\n");
+
+ prompt = lookup("PS1");
+ if (prompt->value == null)
+#ifndef UNIXSHELL
+ setval(prompt, "$ ");
+#else
+ setval(prompt, "% ");
+#endif
+
+ if (geteuid() == 0) {
+ setval(prompt, "# ");
+ prompt->status &= ~EXPORT;
+ }
+ cprompt = lookup("PS2");
+ if (cprompt->value == null)
+ setval(cprompt, "> ");
+
+ iof = filechar;
+ cflag = 0;
+ name = *argv++;
+ if (--argc >= 1) {
+ if(argv[0][0] == '-' && argv[0][1] != '\0') {
+ for (s = argv[0]+1; *s; s++)
+ switch (*s) {
+ case 'c':
+ prompt->status &= ~EXPORT;
+ cprompt->status &= ~EXPORT;
+ setval(prompt, "");
+ setval(cprompt, "");
+ cflag = 1;
+ if (--argc > 0)
+ PUSHIO(aword, *++argv, iof = nlchar);
+ break;
+
+ case 'q':
+ qflag = SIG_DFL;
+ break;
+
+ case 's':
+ /* standard input */
+ break;
+
+ case 't':
+ prompt->status &= ~EXPORT;
+ setval(prompt, "");
+ iof = linechar;
+ break;
+
+ case 'i':
+ talking++;
+ default:
+ if (*s>='a' && *s<='z')
+ flag[*s]++;
+ }
+ } else {
+ argv--;
+ argc++;
+ }
+ if (iof == filechar && --argc > 0) {
+ setval(prompt, "");
+ setval(cprompt, "");
+ prompt->status &= ~EXPORT;
+ cprompt->status &= ~EXPORT;
+ if (newfile(name = *++argv))
+ exit(1);
+ }
+ }
+ setdash();
+ if (e.iop < iostack) {
+ PUSHIO(afile, 0, iof);
+ if (isatty(0) && isatty(1) && !cflag)
+ talking++;
+ }
+ signal(SIGQUIT, qflag);
+ if (name && name[0] == '-') {
+ talking++;
+ if ((f = open(".profile", 0)) >= 0)
+ next(remap(f));
+ if ((f = open("/etc/profile", 0)) >= 0)
+ next(remap(f));
+ }
+ if (talking)
+ signal(SIGTERM, sig);
+ if (signal(SIGINT, SIG_IGN) != SIG_IGN)
+ signal(SIGINT, onintr);
+ dolv = argv;
+ dolc = argc;
+ dolv[0] = name;
+ if (dolc > 1)
+ for (ap = ++argv; --argc > 0;)
+ if (assign(*ap = *argv++, !COPYV))
+ dolc--; /* keyword */
+ else
+ ap++;
+ setval(lookup("#"), putn((--dolc < 0) ? (dolc = 0) : dolc));
+
+ for (;;) {
+ if (talking && e.iop <= iostack)
+ prs(prompt->value);
+ onecommand();
+ }
+}
+
+void
+setdash()
+{
+ register char *cp, c;
+ char m['z'-'a'+1];
+
+ cp = m;
+ for (c='a'; c<='z'; c++)
+ if (flag[c])
+ *cp++ = c;
+ *cp = 0;
+ setval(lookup("-"), m);
+}
+
+int
+newfile(s)
+register char *s;
+{
+ register f;
+
+ if (strcmp(s, "-") != 0) {
+ f = open(s, 0);
+ if (f < 0) {
+ prs(s);
+ err(": cannot open");
+ return(1);
+ }
+ } else
+ f = 0;
+ next(remap(f));
+ return(0);
+}
+
+void
+onecommand()
+{
+ register i;
+ jmp_buf m1;
+
+ while (e.oenv)
+ quitenv();
+ areanum = 1;
+ freehere(areanum);
+ freearea(areanum);
+ garbage();
+ wdlist = 0;
+ iolist = 0;
+ e.errpt = 0;
+ e.linep = line;
+ yynerrs = 0;
+ multiline = 0;
+ inparse = 1;
+ intr = 0;
+ execflg = 0;
+ setjmp(failpt = m1); /* Bruce Evans' fix */
+ if (setjmp(failpt = m1) || yyparse() || intr) {
+ while (e.oenv)
+ quitenv();
+ scraphere();
+ if (!talking && intr)
+ leave();
+ inparse = 0;
+ intr = 0;
+ return;
+ }
+ inparse = 0;
+ brklist = 0;
+ intr = 0;
+ execflg = 0;
+ if (!flag['n'])
+ execute(outtree, NOPIPE, NOPIPE, 0);
+ if (!talking && intr) {
+ execflg = 0;
+ leave();
+ }
+ if ((i = trapset) != 0) {
+ trapset = 0;
+ runtrap(i);
+ }
+}
+
+void
+fail()
+{
+ longjmp(failpt, 1);
+ /* NOTREACHED */
+}
+
+void
+leave()
+{
+ if (execflg)
+ fail();
+ scraphere();
+ freehere(1);
+ runtrap(0);
+ exit(exstat);
+ /* NOTREACHED */
+}
+
+void
+warn(s)
+register char *s;
+{
+ if(*s) {
+ prs(s);
+ exstat = -1;
+ }
+ prs("\n");
+ if (flag['e'])
+ leave();
+}
+
+void
+err(s)
+char *s;
+{
+ warn(s);
+ if (flag['n'])
+ return;
+ if (!talking)
+ leave();
+ if (e.errpt)
+ longjmp(e.errpt, 1);
+ closeall();
+ e.iop = e.iobase = iostack;
+}
+
+int
+newenv(f)
+int f;
+{
+ register struct env *ep;
+
+ if (f) {
+ quitenv();
+ return(1);
+ }
+ ep = (struct env *) space(sizeof(*ep));
+ if (ep == NULL) {
+ while (e.oenv)
+ quitenv();
+ fail();
+ }
+ *ep = e;
+ e.oenv = ep;
+ e.errpt = errpt;
+ return(0);
+}
+
+void
+quitenv()
+{
+ register struct env *ep;
+ register fd;
+
+ if ((ep = e.oenv) != NULL) {
+ fd = e.iofd;
+ e = *ep;
+ /* should close `'d files */
+ DELETE(ep);
+ while (--fd >= e.iofd)
+ close(fd);
+ }
+}
+
+/*
+ * Is any character from s1 in s2?
+ */
+int
+anys(s1, s2)
+register char *s1, *s2;
+{
+ while (*s1)
+ if (any(*s1++, s2))
+ return(1);
+ return(0);
+}
+
+/*
+ * Is character c in s?
+ */
+int
+any(c, s)
+register int c;
+register char *s;
+{
+ while (*s)
+ if (*s++ == c)
+ return(1);
+ return(0);
+}
+
+char *
+putn(n)
+register int n;
+{
+ return(itoa(n, -1));
+}
+
+char *
+itoa(u, n)
+register unsigned u;
+int n;
+{
+ register char *cp;
+ static char s[20];
+ int m;
+
+ m = 0;
+ if (n < 0 && (int) u < 0) {
+ m++;
+ u = -u;
+ }
+ cp = s+sizeof(s);
+ *--cp = 0;
+ do {
+ *--cp = u%10 + '0';
+ u /= 10;
+ } while (--n > 0 || u);
+ if (m)
+ *--cp = '-';
+ return(cp);
+}
+
+void
+next(f)
+int f;
+{
+ PUSHIO(afile, f, filechar);
+}
+
+void
+onintr(s)
+int s; /* ANSI C requires a parameter */
+{
+ signal(SIGINT, onintr);
+ intr = 1;
+ if (talking) {
+ if (inparse) {
+ prs("\n");
+ fail();
+ }
+ }
+ else if (heedint) {
+ execflg = 0;
+ leave();
+ }
+}
+
+int
+letter(c)
+register c;
+{
+ return((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_');
+}
+
+int
+digit(c)
+register c;
+{
+ return(c >= '0' && c <= '9');
+}
+
+int
+letnum(c)
+register c;
+{
+ return(letter(c) || digit(c));
+}
+
+char *
+space(n)
+int n;
+{
+ register char *cp;
+
+ if ((cp = getcell(n)) == 0)
+ err("out of string space");
+ return(cp);
+}
+
+char *
+strsave(s, a)
+register char *s;
+int a;
+{
+ register char *cp, *xp;
+
+ if ((cp = space(strlen(s)+1)) != NULL) {
+ setarea((char *)cp, a);
+ for (xp = cp; (*xp++ = *s++) != '\0';)
+ ;
+ return(cp);
+ }
+ return("");
+}
+
+void
+xfree(s)
+register char *s;
+{
+ DELETE(s);
+}
+
+/*
+ * trap handling
+ */
+void
+sig(i)
+register int i;
+{
+ trapset = i;
+ signal(i, sig);
+}
+
+void runtrap(i)
+int i;
+{
+ char *trapstr;
+
+ if ((trapstr = trap[i]) == NULL)
+ return;
+ if (i == 0)
+ trap[i] = 0;
+ RUN(aword, trapstr, nlchar);
+}
+
+/* -------- var.c -------- */
+/* #include "sh.h" */
+
+/*
+ * Find the given name in the dictionary
+ * and return its value. If the name was
+ * not previously there, enter it now and
+ * return a null value.
+ */
+struct var *
+lookup(n)
+register char *n;
+{
+ register struct var *vp;
+ register char *cp;
+ register int c;
+ static struct var dummy;
+
+ if (digit(*n)) {
+ dummy.name = n;
+ for (c = 0; digit(*n) && c < 1000; n++)
+ c = c*10 + *n-'0';
+ dummy.status = RONLY;
+ dummy.value = c <= dolc? dolv[c]: null;
+ return(&dummy);
+ }
+ for (vp = vlist; vp; vp = vp->next)
+ if (eqname(vp->name, n))
+ return(vp);
+ cp = findeq(n);
+ vp = (struct var *)space(sizeof(*vp));
+ if (vp == 0 || (vp->name = space((int)(cp-n)+2)) == 0) {
+ dummy.name = dummy.value = "";
+ return(&dummy);
+ }
+ for (cp = vp->name; (*cp = *n++) && *cp != '='; cp++)
+ ;
+ if (*cp == 0)
+ *cp = '=';
+ *++cp = 0;
+ setarea((char *)vp, 0);
+ setarea((char *)vp->name, 0);
+ vp->value = null;
+ vp->next = vlist;
+ vp->status = GETCELL;
+ vlist = vp;
+ return(vp);
+}
+
+/*
+ * give variable at `vp' the value `val'.
+ */
+void
+setval(vp, val)
+struct var *vp;
+char *val;
+{
+ nameval(vp, val, (char *)NULL);
+}
+
+/*
+ * if name is not NULL, it must be
+ * a prefix of the space `val',
+ * and end with `='.
+ * this is all so that exporting
+ * values is reasonably painless.
+ */
+void
+nameval(vp, val, name)
+register struct var *vp;
+char *val, *name;
+{
+ register char *cp, *xp;
+ char *nv;
+ int fl;
+
+ if (vp->status & RONLY) {
+ for (xp = vp->name; *xp && *xp != '=';)
+ putc(*xp++);
+ err(" is read-only");
+ return;
+ }
+ fl = 0;
+ if (name == NULL) {
+ xp = space(strlen(vp->name)+strlen(val)+2);
+ if (xp == 0)
+ return;
+ /* make string: name=value */
+ setarea((char *)xp, 0);
+ name = xp;
+ for (cp = vp->name; (*xp = *cp++) && *xp!='='; xp++)
+ ;
+ if (*xp++ == 0)
+ xp[-1] = '=';
+ nv = xp;
+ for (cp = val; (*xp++ = *cp++) != '\0';)
+ ;
+ val = nv;
+ fl = GETCELL;
+ }
+ if (vp->status & GETCELL)
+ xfree(vp->name); /* form new string `name=value' */
+ vp->name = name;
+ vp->value = val;
+ vp->status |= fl;
+}
+
+void
+export(vp)
+struct var *vp;
+{
+ vp->status |= EXPORT;
+}
+
+void
+ronly(vp)
+struct var *vp;
+{
+ if (letter(vp->name[0])) /* not an internal symbol ($# etc) */
+ vp->status |= RONLY;
+}
+
+int
+isassign(s)
+register char *s;
+{
+ if (!letter((int)*s))
+ return(0);
+ for (; *s != '='; s++)
+ if (*s == 0 || !letnum(*s))
+ return(0);
+ return(1);
+}
+
+int
+assign(s, cf)
+register char *s;
+int cf;
+{
+ register char *cp;
+ struct var *vp;
+
+ if (!letter(*s))
+ return(0);
+ for (cp = s; *cp != '='; cp++)
+ if (*cp == 0 || !letnum(*cp))
+ return(0);
+ vp = lookup(s);
+ nameval(vp, ++cp, cf == COPYV? (char *)NULL: s);
+ if (cf != COPYV)
+ vp->status &= ~GETCELL;
+ return(1);
+}
+
+int
+checkname(cp)
+register char *cp;
+{
+ if (!letter(*cp++))
+ return(0);
+ while (*cp)
+ if (!letnum(*cp++))
+ return(0);
+ return(1);
+}
+
+void
+putvlist(f, out)
+register int f, out;
+{
+ register struct var *vp;
+
+ for (vp = vlist; vp; vp = vp->next)
+ if (vp->status & f && letter(*vp->name)) {
+ if (vp->status & EXPORT)
+ write(out, "export ", 7);
+ if (vp->status & RONLY)
+ write(out, "readonly ", 9);
+ write(out, vp->name, (int)(findeq(vp->name) - vp->name));
+ write(out, "\n", 1);
+ }
+}
+
+int
+eqname(n1, n2)
+register char *n1, *n2;
+{
+ for (; *n1 != '=' && *n1 != 0; n1++)
+ if (*n2++ != *n1)
+ return(0);
+ return(*n2 == 0 || *n2 == '=');
+}
+
+static char *
+findeq(cp)
+register char *cp;
+{
+ while (*cp != '\0' && *cp != '=')
+ cp++;
+ return(cp);
+}
+
+/* -------- gmatch.c -------- */
+/*
+ * int gmatch(string, pattern)
+ * char *string, *pattern;
+ *
+ * Match a pattern as in sh(1).
+ */
+
+#define CMASK 0377
+#define QUOTE 0200
+#define QMASK (CMASK&~QUOTE)
+#define NOT '!' /* might use ^ */
+
+int
+gmatch(s, p)
+register char *s, *p;
+{
+ register int sc, pc;
+
+ if (s == NULL || p == NULL)
+ return(0);
+ while ((pc = *p++ & CMASK) != '\0') {
+ sc = *s++ & QMASK;
+ switch (pc) {
+ case '[':
+ if ((p = cclass(p, sc)) == NULL)
+ return(0);
+ break;
+
+ case '?':
+ if (sc == 0)
+ return(0);
+ break;
+
+ case '*':
+ s--;
+ do {
+ if (*p == '\0' || gmatch(s, p))
+ return(1);
+ } while (*s++ != '\0');
+ return(0);
+
+ default:
+ if (sc != (pc&~QUOTE))
+ return(0);
+ }
+ }
+ return(*s == 0);
+}
+
+static char *
+cclass(p, sub)
+register char *p;
+register int sub;
+{
+ register int c, d, not, found;
+
+ if ((not = *p == NOT) != 0)
+ p++;
+ found = not;
+ do {
+ if (*p == '\0')
+ return((char *)NULL);
+ c = *p & CMASK;
+ if (p[1] == '-' && p[2] != ']') {
+ d = p[2] & CMASK;
+ p++;
+ } else
+ d = c;
+ if (c == sub || (c <= sub && sub <= d))
+ found = !not;
+ } while (*++p != ']');
+ return(found? p+1: (char *)NULL);
+}
+
+/* -------- area.c -------- */
+#define REGSIZE sizeof(struct region)
+#define GROWBY 256
+#undef SHRINKBY 64
+#define FREE 32767
+#define BUSY 0
+#define ALIGN (sizeof(int)-1)
+
+/* #include "area.h" */
+
+struct region {
+ struct region *next;
+ int area;
+};
+
+/*
+ * All memory between (char *)areabot and (char *)(areatop+1) is
+ * exclusively administered by the area management routines.
+ * It is assumed that sbrk() and brk() manipulate the high end.
+ */
+static struct region *areabot; /* bottom of area */
+static struct region *areatop; /* top of area */
+static struct region *areanxt; /* starting point of scan */
+
+void
+initarea()
+{
+ while ((int)sbrk(0) & ALIGN)
+ sbrk(1);
+ areabot = (struct region *)sbrk(REGSIZE);
+ areabot->next = areabot;
+ areabot->area = BUSY;
+ areatop = areabot;
+ areanxt = areabot;
+}
+
+char *
+getcell(nbytes)
+unsigned nbytes;
+{
+ register int nregio;
+ register struct region *p, *q;
+ register i;
+
+ if (nbytes == 0)
+ abort(); /* silly and defeats the algorithm */
+ /*
+ * round upwards and add administration area
+ */
+ nregio = (nbytes+(REGSIZE-1))/REGSIZE + 1;
+ for (p = areanxt;;) {
+ if (p->area > areanum) {
+ /*
+ * merge free cells
+ */
+ while ((q = p->next)->area > areanum && q != areanxt)
+ p->next = q->next;
+ /*
+ * exit loop if cell big enough
+ */
+ if (q >= p + nregio)
+ goto found;
+ }
+ p = p->next;
+ if (p == areanxt)
+ break;
+ }
+ i = nregio >= GROWBY ? nregio : GROWBY;
+ p = (struct region *)sbrk(i * REGSIZE);
+ if (p == (struct region *)-1)
+ return((char *)NULL);
+ p--;
+ if (p != areatop)
+ abort(); /* allocated areas are contiguous */
+ q = p + i;
+ p->next = q;
+ p->area = FREE;
+ q->next = areabot;
+ q->area = BUSY;
+ areatop = q;
+found:
+ /*
+ * we found a FREE area big enough, pointed to by 'p', and up to 'q'
+ */
+ areanxt = p + nregio;
+ if (areanxt < q) {
+ /*
+ * split into requested area and rest
+ */
+ if (areanxt+1 > q)
+ abort(); /* insufficient space left for admin */
+ areanxt->next = q;
+ areanxt->area = FREE;
+ p->next = areanxt;
+ }
+ p->area = areanum;
+ return((char *)(p+1));
+}
+
+void
+freecell(cp)
+char *cp;
+{
+ register struct region *p;
+
+ if ((p = (struct region *)cp) != NULL) {
+ p--;
+ if (p < areanxt)
+ areanxt = p;
+ p->area = FREE;
+ }
+}
+
+void
+freearea(a)
+register int a;
+{
+ register struct region *p, *top;
+
+ top = areatop;
+ for (p = areabot; p != top; p = p->next)
+ if (p->area >= a)
+ p->area = FREE;
+}
+
+void
+setarea(cp,a)
+char *cp;
+int a;
+{
+ register struct region *p;
+
+ if ((p = (struct region *)cp) != NULL)
+ (p-1)->area = a;
+}
+
+int
+getarea(cp)
+char *cp;
+{
+ return ((struct region*)cp-1)->area;
+}
+
+void
+garbage()
+{
+ register struct region *p, *q, *top;
+
+ top = areatop;
+ for (p = areabot; p != top; p = p->next) {
+ if (p->area > areanum) {
+ while ((q = p->next)->area > areanum)
+ p->next = q->next;
+ areanxt = p;
+ }
+ }
+#ifdef SHRINKBY
+ if (areatop >= q + SHRINKBY && q->area > areanum) {
+ brk((char *)(q+1));
+ q->next = areabot;
+ q->area = BUSY;
+ areatop = q;
+ }
+#endif
+}
diff --git a/release/picobsd/tinyware/msh/sh2.c b/release/picobsd/tinyware/msh/sh2.c
new file mode 100644
index 000000000000..f7eaf017f5ec
--- /dev/null
+++ b/release/picobsd/tinyware/msh/sh2.c
@@ -0,0 +1,801 @@
+#define Extern extern
+#include <sys/types.h>
+#include <signal.h>
+#define _NSIG NSIG
+#include <errno.h>
+#include <setjmp.h>
+#include "sh.h"
+
+/* -------- csyn.c -------- */
+/*
+ * shell: syntax (C version)
+ */
+
+typedef union {
+ char *cp;
+ char **wp;
+ int i;
+ struct op *o;
+} YYSTYPE;
+#define WORD 256
+#define LOGAND 257
+#define LOGOR 258
+#define BREAK 259
+#define IF 260
+#define THEN 261
+#define ELSE 262
+#define ELIF 263
+#define FI 264
+#define CASE 265
+#define ESAC 266
+#define FOR 267
+#define WHILE 268
+#define UNTIL 269
+#define DO 270
+#define DONE 271
+#define IN 272
+#define YYERRCODE 300
+
+/* flags to yylex */
+#define CONTIN 01 /* skip new lines to complete command */
+
+/* #include "sh.h" */
+#define SYNTAXERR zzerr()
+static int startl;
+static int peeksym;
+static int nlseen;
+static int iounit = IODEFAULT;
+
+static YYSTYPE yylval;
+
+_PROTOTYPE(static struct op *pipeline, (int cf ));
+_PROTOTYPE(static struct op *andor, (void));
+_PROTOTYPE(static struct op *c_list, (void));
+_PROTOTYPE(static int synio, (int cf ));
+_PROTOTYPE(static void musthave, (int c, int cf ));
+_PROTOTYPE(static struct op *simple, (void));
+_PROTOTYPE(static struct op *nested, (int type, int mark ));
+_PROTOTYPE(static struct op *command, (int cf ));
+_PROTOTYPE(static struct op *dogroup, (int onlydone ));
+_PROTOTYPE(static struct op *thenpart, (void));
+_PROTOTYPE(static struct op *elsepart, (void));
+_PROTOTYPE(static struct op *caselist, (void));
+_PROTOTYPE(static struct op *casepart, (void));
+_PROTOTYPE(static char **pattern, (void));
+_PROTOTYPE(static char **wordlist, (void));
+_PROTOTYPE(static struct op *list, (struct op *t1, struct op *t2 ));
+_PROTOTYPE(static struct op *block, (int type, struct op *t1, struct op *t2, char **wp ));
+_PROTOTYPE(static struct op *newtp, (void));
+_PROTOTYPE(static struct op *namelist, (struct op *t ));
+_PROTOTYPE(static char **copyw, (void));
+_PROTOTYPE(static void word, (char *cp ));
+_PROTOTYPE(static struct ioword **copyio, (void));
+_PROTOTYPE(static struct ioword *io, (int u, int f, char *cp ));
+_PROTOTYPE(static void zzerr, (void));
+_PROTOTYPE(void yyerror, (char *s ));
+_PROTOTYPE(static int yylex, (int cf ));
+_PROTOTYPE(int collect, (int c, int c1 ));
+_PROTOTYPE(int dual, (int c ));
+_PROTOTYPE(static void diag, (int ec ));
+_PROTOTYPE(static char *tree, (unsigned size ));
+_PROTOTYPE(void printf, (char *s ));
+
+int
+yyparse()
+{
+ startl = 1;
+ peeksym = 0;
+ yynerrs = 0;
+ outtree = c_list();
+ musthave('\n', 0);
+ return(yynerrs!=0);
+}
+
+static struct op *
+pipeline(cf)
+int cf;
+{
+ register struct op *t, *p;
+ register int c;
+
+ t = command(cf);
+ if (t != NULL) {
+ while ((c = yylex(0)) == '|') {
+ if ((p = command(CONTIN)) == NULL)
+ SYNTAXERR;
+ if (t->type != TPAREN && t->type != TCOM) {
+ /* shell statement */
+ t = block(TPAREN, t, NOBLOCK, NOWORDS);
+ }
+ t = block(TPIPE, t, p, NOWORDS);
+ }
+ peeksym = c;
+ }
+ return(t);
+}
+
+static struct op *
+andor()
+{
+ register struct op *t, *p;
+ register int c;
+
+ t = pipeline(0);
+ if (t != NULL) {
+ while ((c = yylex(0)) == LOGAND || c == LOGOR) {
+ if ((p = pipeline(CONTIN)) == NULL)
+ SYNTAXERR;
+ t = block(c == LOGAND? TAND: TOR, t, p, NOWORDS);
+ }
+ peeksym = c;
+ }
+ return(t);
+}
+
+static struct op *
+c_list()
+{
+ register struct op *t, *p;
+ register int c;
+
+ t = andor();
+ if (t != NULL) {
+ if((peeksym = yylex(0)) == '&')
+ t = block(TASYNC, t, NOBLOCK, NOWORDS);
+ while ((c = yylex(0)) == ';' || c == '&' || (multiline && c == '\n')) {
+ if ((p = andor()) == NULL)
+ return(t);
+ if((peeksym = yylex(0)) == '&')
+ p = block(TASYNC, p, NOBLOCK, NOWORDS);
+ t = list(t, p);
+ }
+ peeksym = c;
+ }
+ return(t);
+}
+
+
+static int
+synio(cf)
+int cf;
+{
+ register struct ioword *iop;
+ register int i;
+ register int c;
+
+ if ((c = yylex(cf)) != '<' && c != '>') {
+ peeksym = c;
+ return(0);
+ }
+ i = yylval.i;
+ musthave(WORD, 0);
+ iop = io(iounit, i, yylval.cp);
+ iounit = IODEFAULT;
+ if (i & IOHERE)
+ markhere(yylval.cp, iop);
+ return(1);
+}
+
+static void
+musthave(c, cf)
+int c, cf;
+{
+ if ((peeksym = yylex(cf)) != c)
+ SYNTAXERR;
+ peeksym = 0;
+}
+
+static struct op *
+simple()
+{
+ register struct op *t;
+
+ t = NULL;
+ for (;;) {
+ switch (peeksym = yylex(0)) {
+ case '<':
+ case '>':
+ (void) synio(0);
+ break;
+
+ case WORD:
+ if (t == NULL) {
+ t = newtp();
+ t->type = TCOM;
+ }
+ peeksym = 0;
+ word(yylval.cp);
+ break;
+
+ default:
+ return(t);
+ }
+ }
+}
+
+static struct op *
+nested(type, mark)
+int type, mark;
+{
+ register struct op *t;
+
+ multiline++;
+ t = c_list();
+ musthave(mark, 0);
+ multiline--;
+ return(block(type, t, NOBLOCK, NOWORDS));
+}
+
+static struct op *
+command(cf)
+int cf;
+{
+ register struct op *t;
+ struct wdblock *iosave;
+ register int c;
+
+ iosave = iolist;
+ iolist = NULL;
+ if (multiline)
+ cf |= CONTIN;
+ while (synio(cf))
+ cf = 0;
+ switch (c = yylex(cf)) {
+ default:
+ peeksym = c;
+ if ((t = simple()) == NULL) {
+ if (iolist == NULL)
+ return((struct op *)NULL);
+ t = newtp();
+ t->type = TCOM;
+ }
+ break;
+
+ case '(':
+ t = nested(TPAREN, ')');
+ break;
+
+ case '{':
+ t = nested(TBRACE, '}');
+ break;
+
+ case FOR:
+ t = newtp();
+ t->type = TFOR;
+ musthave(WORD, 0);
+ startl = 1;
+ t->str = yylval.cp;
+ multiline++;
+ t->words = wordlist();
+ if ((c = yylex(0)) != '\n' && c != ';')
+ peeksym = c;
+ t->left = dogroup(0);
+ multiline--;
+ break;
+
+ case WHILE:
+ case UNTIL:
+ multiline++;
+ t = newtp();
+ t->type = c == WHILE? TWHILE: TUNTIL;
+ t->left = c_list();
+ t->right = dogroup(1);
+ t->words = NULL;
+ multiline--;
+ break;
+
+ case CASE:
+ t = newtp();
+ t->type = TCASE;
+ musthave(WORD, 0);
+ t->str = yylval.cp;
+ startl++;
+ multiline++;
+ musthave(IN, CONTIN);
+ startl++;
+ t->left = caselist();
+ musthave(ESAC, 0);
+ multiline--;
+ break;
+
+ case IF:
+ multiline++;
+ t = newtp();
+ t->type = TIF;
+ t->left = c_list();
+ t->right = thenpart();
+ musthave(FI, 0);
+ multiline--;
+ break;
+ }
+ while (synio(0))
+ ;
+ t = namelist(t);
+ iolist = iosave;
+ return(t);
+}
+
+static struct op *
+dogroup(onlydone)
+int onlydone;
+{
+ register int c;
+ register struct op *list;
+
+ c = yylex(CONTIN);
+ if (c == DONE && onlydone)
+ return((struct op *)NULL);
+ if (c != DO)
+ SYNTAXERR;
+ list = c_list();
+ musthave(DONE, 0);
+ return(list);
+}
+
+static struct op *
+thenpart()
+{
+ register int c;
+ register struct op *t;
+
+ if ((c = yylex(0)) != THEN) {
+ peeksym = c;
+ return((struct op *)NULL);
+ }
+ t = newtp();
+ t->type = 0;
+ t->left = c_list();
+ if (t->left == NULL)
+ SYNTAXERR;
+ t->right = elsepart();
+ return(t);
+}
+
+static struct op *
+elsepart()
+{
+ register int c;
+ register struct op *t;
+
+ switch (c = yylex(0)) {
+ case ELSE:
+ if ((t = c_list()) == NULL)
+ SYNTAXERR;
+ return(t);
+
+ case ELIF:
+ t = newtp();
+ t->type = TELIF;
+ t->left = c_list();
+ t->right = thenpart();
+ return(t);
+
+ default:
+ peeksym = c;
+ return((struct op *)NULL);
+ }
+}
+
+static struct op *
+caselist()
+{
+ register struct op *t;
+
+ t = NULL;
+ while ((peeksym = yylex(CONTIN)) != ESAC)
+ t = list(t, casepart());
+ return(t);
+}
+
+static struct op *
+casepart()
+{
+ register struct op *t;
+
+ t = newtp();
+ t->type = TPAT;
+ t->words = pattern();
+ musthave(')', 0);
+ t->left = c_list();
+ if ((peeksym = yylex(CONTIN)) != ESAC)
+ musthave(BREAK, CONTIN);
+ return(t);
+}
+
+static char **
+pattern()
+{
+ register int c, cf;
+
+ cf = CONTIN;
+ do {
+ musthave(WORD, cf);
+ word(yylval.cp);
+ cf = 0;
+ } while ((c = yylex(0)) == '|');
+ peeksym = c;
+ word(NOWORD);
+ return(copyw());
+}
+
+static char **
+wordlist()
+{
+ register int c;
+
+ if ((c = yylex(0)) != IN) {
+ peeksym = c;
+ return((char **)NULL);
+ }
+ startl = 0;
+ while ((c = yylex(0)) == WORD)
+ word(yylval.cp);
+ word(NOWORD);
+ peeksym = c;
+ return(copyw());
+}
+
+/*
+ * supporting functions
+ */
+static struct op *
+list(t1, t2)
+register struct op *t1, *t2;
+{
+ if (t1 == NULL)
+ return(t2);
+ if (t2 == NULL)
+ return(t1);
+ return(block(TLIST, t1, t2, NOWORDS));
+}
+
+static struct op *
+block(type, t1, t2, wp)
+int type;
+struct op *t1, *t2;
+char **wp;
+{
+ register struct op *t;
+
+ t = newtp();
+ t->type = type;
+ t->left = t1;
+ t->right = t2;
+ t->words = wp;
+ return(t);
+}
+
+struct res {
+ char *r_name;
+ int r_val;
+} restab[] = {
+ "for", FOR,
+ "case", CASE,
+ "esac", ESAC,
+ "while", WHILE,
+ "do", DO,
+ "done", DONE,
+ "if", IF,
+ "in", IN,
+ "then", THEN,
+ "else", ELSE,
+ "elif", ELIF,
+ "until", UNTIL,
+ "fi", FI,
+
+ ";;", BREAK,
+ "||", LOGOR,
+ "&&", LOGAND,
+ "{", '{',
+ "}", '}',
+
+ 0,
+};
+
+int
+rlookup(n)
+register char *n;
+{
+ register struct res *rp;
+
+ for (rp = restab; rp->r_name; rp++)
+ if (strcmp(rp->r_name, n) == 0)
+ return(rp->r_val);
+ return(0);
+}
+
+static struct op *
+newtp()
+{
+ register struct op *t;
+
+ t = (struct op *)tree(sizeof(*t));
+ t->type = 0;
+ t->words = NULL;
+ t->ioact = NULL;
+ t->left = NULL;
+ t->right = NULL;
+ t->str = NULL;
+ return(t);
+}
+
+static struct op *
+namelist(t)
+register struct op *t;
+{
+ if (iolist) {
+ iolist = addword((char *)NULL, iolist);
+ t->ioact = copyio();
+ } else
+ t->ioact = NULL;
+ if (t->type != TCOM) {
+ if (t->type != TPAREN && t->ioact != NULL) {
+ t = block(TPAREN, t, NOBLOCK, NOWORDS);
+ t->ioact = t->left->ioact;
+ t->left->ioact = NULL;
+ }
+ return(t);
+ }
+ word(NOWORD);
+ t->words = copyw();
+ return(t);
+}
+
+static char **
+copyw()
+{
+ register char **wd;
+
+ wd = getwords(wdlist);
+ wdlist = 0;
+ return(wd);
+}
+
+static void
+word(cp)
+char *cp;
+{
+ wdlist = addword(cp, wdlist);
+}
+
+static struct ioword **
+copyio()
+{
+ register struct ioword **iop;
+
+ iop = (struct ioword **) getwords(iolist);
+ iolist = 0;
+ return(iop);
+}
+
+static struct ioword *
+io(u, f, cp)
+int u;
+int f;
+char *cp;
+{
+ register struct ioword *iop;
+
+ iop = (struct ioword *) tree(sizeof(*iop));
+ iop->io_unit = u;
+ iop->io_flag = f;
+ iop->io_name = cp;
+ iolist = addword((char *)iop, iolist);
+ return(iop);
+}
+
+static void
+zzerr()
+{
+ yyerror("syntax error");
+}
+
+void
+yyerror(s)
+char *s;
+{
+ yynerrs++;
+ if (talking && e.iop <= iostack) {
+ multiline = 0;
+ while (eofc() == 0 && yylex(0) != '\n')
+ ;
+ }
+ err(s);
+ fail();
+}
+
+static int
+yylex(cf)
+int cf;
+{
+ register int c, c1;
+ int atstart;
+
+ if ((c = peeksym) > 0) {
+ peeksym = 0;
+ if (c == '\n')
+ startl = 1;
+ return(c);
+ }
+ nlseen = 0;
+ e.linep = line;
+ atstart = startl;
+ startl = 0;
+ yylval.i = 0;
+
+loop:
+ while ((c = getc(0)) == ' ' || c == '\t')
+ ;
+ switch (c) {
+ default:
+ if (any(c, "0123456789")) {
+ unget(c1 = getc(0));
+ if (c1 == '<' || c1 == '>') {
+ iounit = c - '0';
+ goto loop;
+ }
+ *e.linep++ = c;
+ c = c1;
+ }
+ break;
+
+ case '#':
+ while ((c = getc(0)) != 0 && c != '\n')
+ ;
+ unget(c);
+ goto loop;
+
+ case 0:
+ return(c);
+
+ case '$':
+ *e.linep++ = c;
+ if ((c = getc(0)) == '{') {
+ if ((c = collect(c, '}')) != '\0')
+ return(c);
+ goto pack;
+ }
+ break;
+
+ case '`':
+ case '\'':
+ case '"':
+ if ((c = collect(c, c)) != '\0')
+ return(c);
+ goto pack;
+
+ case '|':
+ case '&':
+ case ';':
+ if ((c1 = dual(c)) != '\0') {
+ startl = 1;
+ return(c1);
+ }
+ startl = 1;
+ return(c);
+ case '^':
+ startl = 1;
+ return('|');
+ case '>':
+ case '<':
+ diag(c);
+ return(c);
+
+ case '\n':
+ nlseen++;
+ gethere();
+ startl = 1;
+ if (multiline || cf & CONTIN) {
+ if (talking && e.iop <= iostack)
+ prs(cprompt->value);
+ if (cf & CONTIN)
+ goto loop;
+ }
+ return(c);
+
+ case '(':
+ case ')':
+ startl = 1;
+ return(c);
+ }
+
+ unget(c);
+
+pack:
+ while ((c = getc(0)) != 0 && !any(c, "`$ '\"\t;&<>()|^\n"))
+ if (e.linep >= elinep)
+ err("word too long");
+ else
+ *e.linep++ = c;
+ unget(c);
+ if(any(c, "\"'`$"))
+ goto loop;
+ *e.linep++ = '\0';
+ if (atstart && (c = rlookup(line))!=0) {
+ startl = 1;
+ return(c);
+ }
+ yylval.cp = strsave(line, areanum);
+ return(WORD);
+}
+
+int
+collect(c, c1)
+register c, c1;
+{
+ char s[2];
+
+ *e.linep++ = c;
+ while ((c = getc(c1)) != c1) {
+ if (c == 0) {
+ unget(c);
+ s[0] = c1;
+ s[1] = 0;
+ prs("no closing "); yyerror(s);
+ return(YYERRCODE);
+ }
+ if (talking && c == '\n' && e.iop <= iostack)
+ prs(cprompt->value);
+ *e.linep++ = c;
+ }
+ *e.linep++ = c;
+ return(0);
+}
+
+int
+dual(c)
+register c;
+{
+ char s[3];
+ register char *cp = s;
+
+ *cp++ = c;
+ *cp++ = getc(0);
+ *cp = 0;
+ if ((c = rlookup(s)) == 0)
+ unget(*--cp);
+ return(c);
+}
+
+static void
+diag(ec)
+register int ec;
+{
+ register int c;
+
+ c = getc(0);
+ if (c == '>' || c == '<') {
+ if (c != ec)
+ zzerr();
+ yylval.i = ec == '>'? IOWRITE|IOCAT: IOHERE;
+ c = getc(0);
+ } else
+ yylval.i = ec == '>'? IOWRITE: IOREAD;
+ if (c != '&' || yylval.i == IOHERE)
+ unget(c);
+ else
+ yylval.i |= IODUP;
+}
+
+static char *
+tree(size)
+unsigned size;
+{
+ register char *t;
+
+ if ((t = getcell(size)) == NULL) {
+ prs("command line too complicated\n");
+ fail();
+ /* NOTREACHED */
+ }
+ return(t);
+}
+
+/* VARARGS1 */
+/* ARGSUSED */
+void
+printf(s) /* yyparse calls it */
+char *s;
+{
+}
+
diff --git a/release/picobsd/tinyware/msh/sh3.c b/release/picobsd/tinyware/msh/sh3.c
new file mode 100644
index 000000000000..5959f2735424
--- /dev/null
+++ b/release/picobsd/tinyware/msh/sh3.c
@@ -0,0 +1,1143 @@
+#define Extern extern
+#include <sys/types.h>
+#include <signal.h>
+#define _NSIG NSIG
+#include <errno.h>
+#include <setjmp.h>
+#include <stddef.h>
+#include <time.h>
+#include <sys/times.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#undef NULL
+#include "sh.h"
+
+/* -------- exec.c -------- */
+/* #include "sh.h" */
+
+/*
+ * execute tree
+ */
+
+static char *signame[] = {
+ "Signal 0",
+ "Hangup",
+ (char *)NULL, /* interrupt */
+ "Quit",
+ "Illegal instruction",
+ "Trace/BPT trap",
+ "Abort",
+ "EMT trap",
+ "Floating exception",
+ "Killed",
+ "Bus error",
+ "Memory fault",
+ "Bad system call",
+ (char *)NULL, /* broken pipe */
+ "Alarm clock",
+ "Terminated",
+};
+#define NSIGNAL (sizeof(signame)/sizeof(signame[0]))
+
+
+_PROTOTYPE(static int forkexec, (struct op *t, int *pin, int *pout, int act, char **wp, int *pforked ));
+_PROTOTYPE(static int parent, (void));
+_PROTOTYPE(int iosetup, (struct ioword *iop, int pipein, int pipeout ));
+_PROTOTYPE(static void echo, (char **wp ));
+_PROTOTYPE(static struct op **find1case, (struct op *t, char *w ));
+_PROTOTYPE(static struct op *findcase, (struct op *t, char *w ));
+_PROTOTYPE(static void brkset, (struct brkcon *bc ));
+_PROTOTYPE(int dolabel, (void));
+_PROTOTYPE(int dochdir, (struct op *t ));
+_PROTOTYPE(int doshift, (struct op *t ));
+_PROTOTYPE(int dologin, (struct op *t ));
+_PROTOTYPE(int doumask, (struct op *t ));
+_PROTOTYPE(int doexec, (struct op *t ));
+_PROTOTYPE(int dodot, (struct op *t ));
+_PROTOTYPE(int dowait, (struct op *t ));
+_PROTOTYPE(int doread, (struct op *t ));
+_PROTOTYPE(int doeval, (struct op *t ));
+_PROTOTYPE(int dotrap, (struct op *t ));
+_PROTOTYPE(int getsig, (char *s ));
+_PROTOTYPE(void setsig, (int n, void (*f)()));
+_PROTOTYPE(int getn, (char *as ));
+_PROTOTYPE(int dobreak, (struct op *t ));
+_PROTOTYPE(int docontinue, (struct op *t ));
+_PROTOTYPE(static int brkcontin, (char *cp, int val ));
+_PROTOTYPE(int doexit, (struct op *t ));
+_PROTOTYPE(int doexport, (struct op *t ));
+_PROTOTYPE(int doreadonly, (struct op *t ));
+_PROTOTYPE(static void rdexp, (char **wp, void (*f)(), int key));
+_PROTOTYPE(static void badid, (char *s ));
+_PROTOTYPE(int doset, (struct op *t ));
+_PROTOTYPE(void varput, (char *s, int out ));
+_PROTOTYPE(int dotimes, (void));
+
+int
+execute(t, pin, pout, act)
+register struct op *t;
+int *pin, *pout;
+int act;
+{
+ register struct op *t1;
+ int i, pv[2], rv, child, a;
+ char *cp, **wp, **wp2;
+ struct var *vp;
+ struct brkcon bc;
+
+ if (t == NULL)
+ return(0);
+ rv = 0;
+ a = areanum++;
+ wp = (wp2 = t->words) != NULL
+ ? eval(wp2, t->type == TCOM ? DOALL : DOALL & ~DOKEY)
+ : NULL;
+
+ switch(t->type) {
+ case TPAREN:
+ case TCOM:
+ rv = forkexec(t, pin, pout, act, wp, &child);
+ if (child) {
+ exstat = rv;
+ leave();
+ }
+ break;
+
+ case TPIPE:
+ if ((rv = openpipe(pv)) < 0)
+ break;
+ pv[0] = remap(pv[0]);
+ pv[1] = remap(pv[1]);
+ (void) execute(t->left, pin, pv, 0);
+ rv = execute(t->right, pv, pout, 0);
+ break;
+
+ case TLIST:
+ (void) execute(t->left, pin, pout, 0);
+ rv = execute(t->right, pin, pout, 0);
+ break;
+
+ case TASYNC:
+ i = parent();
+ if (i != 0) {
+ if (i != -1) {
+ setval(lookup("!"), putn(i));
+ if (pin != NULL)
+ closepipe(pin);
+ if (talking) {
+ prs(putn(i));
+ prs("\n");
+ }
+ } else
+ rv = -1;
+ setstatus(rv);
+ } else {
+ signal(SIGINT, SIG_IGN);
+ signal(SIGQUIT, SIG_IGN);
+ if (talking)
+ signal(SIGTERM, SIG_DFL);
+ talking = 0;
+ if (pin == NULL) {
+ close(0);
+ open("/dev/null", 0);
+ }
+ exit(execute(t->left, pin, pout, FEXEC));
+ }
+ break;
+
+ case TOR:
+ case TAND:
+ rv = execute(t->left, pin, pout, 0);
+ if ((t1 = t->right)!=NULL && (rv == 0) == (t->type == TAND))
+ rv = execute(t1, pin, pout, 0);
+ break;
+
+ case TFOR:
+ if (wp == NULL) {
+ wp = dolv+1;
+ if ((i = dolc) < 0)
+ i = 0;
+ } else {
+ i = -1;
+ while (*wp++ != NULL)
+ ;
+ }
+ vp = lookup(t->str);
+ while (setjmp(bc.brkpt))
+ if (isbreak)
+ goto broken;
+ brkset(&bc);
+ for (t1 = t->left; i-- && *wp != NULL;) {
+ setval(vp, *wp++);
+ rv = execute(t1, pin, pout, 0);
+ }
+ brklist = brklist->nextlev;
+ break;
+
+ case TWHILE:
+ case TUNTIL:
+ while (setjmp(bc.brkpt))
+ if (isbreak)
+ goto broken;
+ brkset(&bc);
+ t1 = t->left;
+ while ((execute(t1, pin, pout, 0) == 0) == (t->type == TWHILE))
+ rv = execute(t->right, pin, pout, 0);
+ brklist = brklist->nextlev;
+ break;
+
+ case TIF:
+ case TELIF:
+ if (t->right != NULL) {
+ rv = !execute(t->left, pin, pout, 0) ?
+ execute(t->right->left, pin, pout, 0):
+ execute(t->right->right, pin, pout, 0);
+ }
+ break;
+
+ case TCASE:
+ if ((cp = evalstr(t->str, DOSUB|DOTRIM)) == 0)
+ cp = "";
+ if ((t1 = findcase(t->left, cp)) != NULL)
+ rv = execute(t1, pin, pout, 0);
+ break;
+
+ case TBRACE:
+/*
+ if (iopp = t->ioact)
+ while (*iopp)
+ if (iosetup(*iopp++, pin!=NULL, pout!=NULL)) {
+ rv = -1;
+ break;
+ }
+*/
+ if (rv >= 0 && (t1 = t->left))
+ rv = execute(t1, pin, pout, 0);
+ break;
+ }
+
+broken:
+ t->words = wp2;
+ isbreak = 0;
+ freehere(areanum);
+ freearea(areanum);
+ areanum = a;
+ if (talking && intr) {
+ closeall();
+ fail();
+ }
+ if ((i = trapset) != 0) {
+ trapset = 0;
+ runtrap(i);
+ }
+ return(rv);
+}
+
+static int
+forkexec(t, pin, pout, act, wp, pforked)
+register struct op *t;
+int *pin, *pout;
+int act;
+char **wp;
+int *pforked;
+{
+ int i, rv, (*shcom)();
+ register int f;
+ char *cp;
+ struct ioword **iopp;
+ int resetsig;
+ char **owp;
+
+ owp = wp;
+ resetsig = 0;
+ *pforked = 0;
+ shcom = NULL;
+ rv = -1; /* system-detected error */
+ if (t->type == TCOM) {
+ while ((cp = *wp++) != NULL)
+ ;
+ cp = *wp;
+
+ /* strip all initial assignments */
+ /* not correct wrt PATH=yyy command etc */
+ if (flag['x'])
+ echo (cp ? wp: owp);
+ if (cp == NULL && t->ioact == NULL) {
+ while ((cp = *owp++) != NULL && assign(cp, COPYV))
+ ;
+ return(setstatus(0));
+ }
+ else if (cp != NULL)
+ shcom = inbuilt(cp);
+ }
+ t->words = wp;
+ f = act;
+ if (shcom == NULL && (f & FEXEC) == 0) {
+ i = parent();
+ if (i != 0) {
+ if (i == -1)
+ return(rv);
+ if (pin != NULL)
+ closepipe(pin);
+ return(pout==NULL? setstatus(waitfor(i,0)): 0);
+ }
+ if (talking) {
+ signal(SIGINT, SIG_IGN);
+ signal(SIGQUIT, SIG_IGN);
+ resetsig = 1;
+ }
+ talking = 0;
+ intr = 0;
+ (*pforked)++;
+ brklist = 0;
+ execflg = 0;
+ }
+ if (owp != NULL)
+ while ((cp = *owp++) != NULL && assign(cp, COPYV))
+ if (shcom == NULL)
+ export(lookup(cp));
+#ifdef COMPIPE
+ if ((pin != NULL || pout != NULL) && shcom != NULL && shcom != doexec) {
+ err("piping to/from shell builtins not yet done");
+ return(-1);
+ }
+#endif
+ if (pin != NULL) {
+ dup2(pin[0], 0);
+ closepipe(pin);
+ }
+ if (pout != NULL) {
+ dup2(pout[1], 1);
+ closepipe(pout);
+ }
+ if ((iopp = t->ioact) != NULL) {
+ if (shcom != NULL && shcom != doexec) {
+ prs(cp);
+ err(": cannot redirect shell command");
+ return(-1);
+ }
+ while (*iopp)
+ if (iosetup(*iopp++, pin!=NULL, pout!=NULL))
+ return(rv);
+ }
+ if (shcom)
+ return(setstatus((*shcom)(t)));
+ /* should use FIOCEXCL */
+ for (i=FDBASE; i<NOFILE; i++)
+ close(i);
+ if (resetsig) {
+ signal(SIGINT, SIG_DFL);
+ signal(SIGQUIT, SIG_DFL);
+ }
+ if (t->type == TPAREN)
+ exit(execute(t->left, NOPIPE, NOPIPE, FEXEC));
+ if (wp[0] == NULL)
+ exit(0);
+ cp = rexecve(wp[0], wp, makenv());
+ prs(wp[0]); prs(": "); warn(cp);
+ if (!execflg)
+ trap[0] = NULL;
+ leave();
+ /* NOTREACHED */
+}
+
+/*
+ * common actions when creating a new child
+ */
+static int
+parent()
+{
+ register int i;
+
+ i = fork();
+ if (i != 0) {
+ if (i == -1)
+ warn("try again");
+ }
+ return(i);
+}
+
+/*
+ * 0< 1> are ignored as required
+ * within pipelines.
+ */
+int
+iosetup(iop, pipein, pipeout)
+register struct ioword *iop;
+int pipein, pipeout;
+{
+ register u;
+ char *cp, *msg;
+
+ if (iop->io_unit == IODEFAULT) /* take default */
+ iop->io_unit = iop->io_flag&(IOREAD|IOHERE)? 0: 1;
+ if (pipein && iop->io_unit == 0)
+ return(0);
+ if (pipeout && iop->io_unit == 1)
+ return(0);
+ msg = iop->io_flag&(IOREAD|IOHERE)? "open": "create";
+ if ((iop->io_flag & IOHERE) == 0) {
+ cp = iop->io_name;
+ if ((cp = evalstr(cp, DOSUB|DOTRIM)) == NULL)
+ return(1);
+ }
+ if (iop->io_flag & IODUP) {
+ if (cp[1] || (!digit(*cp) && *cp != '-')) {
+ prs(cp);
+ err(": illegal >& argument");
+ return(1);
+ }
+ if (*cp == '-')
+ iop->io_flag = IOCLOSE;
+ iop->io_flag &= ~(IOREAD|IOWRITE);
+ }
+ switch (iop->io_flag) {
+ case IOREAD:
+ u = open(cp, 0);
+ break;
+
+ case IOHERE:
+ case IOHERE|IOXHERE:
+ u = herein(iop->io_name, iop->io_flag&IOXHERE);
+ cp = "here file";
+ break;
+
+ case IOWRITE|IOCAT:
+ if ((u = open(cp, 1)) >= 0) {
+ lseek(u, (long)0, 2);
+ break;
+ }
+ case IOWRITE:
+ u = creat(cp, 0666);
+ break;
+
+ case IODUP:
+ u = dup2(*cp-'0', iop->io_unit);
+ break;
+
+ case IOCLOSE:
+ close(iop->io_unit);
+ return(0);
+ }
+ if (u < 0) {
+ prs(cp);
+ prs(": cannot ");
+ warn(msg);
+ return(1);
+ } else {
+ if (u != iop->io_unit) {
+ dup2(u, iop->io_unit);
+ close(u);
+ }
+ }
+ return(0);
+}
+
+static void
+echo(wp)
+register char **wp;
+{
+ register i;
+
+ prs("+");
+ for (i=0; wp[i]; i++) {
+ if (i)
+ prs(" ");
+ prs(wp[i]);
+ }
+ prs("\n");
+}
+
+static struct op **
+find1case(t, w)
+struct op *t;
+char *w;
+{
+ register struct op *t1;
+ struct op **tp;
+ register char **wp, *cp;
+
+ if (t == NULL)
+ return((struct op **)NULL);
+ if (t->type == TLIST) {
+ if ((tp = find1case(t->left, w)) != NULL)
+ return(tp);
+ t1 = t->right; /* TPAT */
+ } else
+ t1 = t;
+ for (wp = t1->words; *wp;)
+ if ((cp = evalstr(*wp++, DOSUB)) && gmatch(w, cp))
+ return(&t1->left);
+ return((struct op **)NULL);
+}
+
+static struct op *
+findcase(t, w)
+struct op *t;
+char *w;
+{
+ register struct op **tp;
+
+ return((tp = find1case(t, w)) != NULL? *tp: (struct op *)NULL);
+}
+
+/*
+ * Enter a new loop level (marked for break/continue).
+ */
+static void
+brkset(bc)
+struct brkcon *bc;
+{
+ bc->nextlev = brklist;
+ brklist = bc;
+}
+
+/*
+ * Wait for the last process created.
+ * Print a message for each process found
+ * that was killed by a signal.
+ * Ignore interrupt signals while waiting
+ * unless `canintr' is true.
+ */
+int
+waitfor(lastpid, canintr)
+register int lastpid;
+int canintr;
+{
+ register int pid, rv;
+ int s;
+ int oheedint = heedint;
+
+ heedint = 0;
+ rv = 0;
+ do {
+ pid = wait(&s);
+ if (pid == -1) {
+ if (errno != EINTR || canintr)
+ break;
+ } else {
+ if ((rv = WAITSIG(s)) != 0) {
+ if (rv < NSIGNAL) {
+ if (signame[rv] != NULL) {
+ if (pid != lastpid) {
+ prn(pid);
+ prs(": ");
+ }
+ prs(signame[rv]);
+ }
+ } else {
+ if (pid != lastpid) {
+ prn(pid);
+ prs(": ");
+ }
+ prs("Signal "); prn(rv); prs(" ");
+ }
+ if (WAITCORE(s))
+ prs(" - core dumped");
+ if (rv >= NSIGNAL || signame[rv])
+ prs("\n");
+ rv = -1;
+ } else
+ rv = WAITVAL(s);
+ }
+ } while (pid != lastpid);
+ heedint = oheedint;
+ if (intr)
+ if (talking) {
+ if (canintr)
+ intr = 0;
+ } else {
+ if (exstat == 0) exstat = rv;
+ onintr(0);
+ }
+ return(rv);
+}
+
+int
+setstatus(s)
+register int s;
+{
+ exstat = s;
+ setval(lookup("?"), putn(s));
+ return(s);
+}
+
+/*
+ * PATH-searching interface to execve.
+ * If getenv("PATH") were kept up-to-date,
+ * execvp might be used.
+ */
+char *
+rexecve(c, v, envp)
+char *c, **v, **envp;
+{
+ register int i;
+ register char *sp, *tp;
+ int eacces = 0, asis = 0;
+
+ sp = any('/', c)? "": path->value;
+ asis = *sp == '\0';
+ while (asis || *sp != '\0') {
+ asis = 0;
+ tp = e.linep;
+ for (; *sp != '\0'; tp++)
+ if ((*tp = *sp++) == ':') {
+ asis = *sp == '\0';
+ break;
+ }
+ if (tp != e.linep)
+ *tp++ = '/';
+ for (i = 0; (*tp++ = c[i++]) != '\0';)
+ ;
+ execve(e.linep, v, envp);
+ switch (errno) {
+ case ENOEXEC:
+ *v = e.linep;
+ tp = *--v;
+ *v = e.linep;
+ execve("/bin/sh", v, envp);
+ *v = tp;
+ return("no Shell");
+
+ case ENOMEM:
+ return("program too big");
+
+ case E2BIG:
+ return("argument list too long");
+
+ case EACCES:
+ eacces++;
+ break;
+ }
+ }
+ return(errno==ENOENT ? "not found" : "cannot execute");
+}
+
+/*
+ * Run the command produced by generator `f'
+ * applied to stream `arg'.
+ */
+int
+run(argp, f)
+struct ioarg *argp;
+int (*f)();
+{
+ struct op *otree;
+ struct wdblock *swdlist;
+ struct wdblock *siolist;
+ jmp_buf ev, rt;
+ xint *ofail;
+ int rv;
+
+ areanum++;
+ swdlist = wdlist;
+ siolist = iolist;
+ otree = outtree;
+ ofail = failpt;
+ rv = -1;
+ if (newenv(setjmp(errpt = ev)) == 0) {
+ wdlist = 0;
+ iolist = 0;
+ pushio(argp, f);
+ e.iobase = e.iop;
+ yynerrs = 0;
+ if (setjmp(failpt = rt) == 0 && yyparse() == 0)
+ rv = execute(outtree, NOPIPE, NOPIPE, 0);
+ quitenv();
+ }
+ wdlist = swdlist;
+ iolist = siolist;
+ failpt = ofail;
+ outtree = otree;
+ freearea(areanum--);
+ return(rv);
+}
+
+/* -------- do.c -------- */
+/* #include "sh.h" */
+
+/*
+ * built-in commands: doX
+ */
+
+int
+dolabel()
+{
+ return(0);
+}
+
+int
+dochdir(t)
+register struct op *t;
+{
+ register char *cp, *er;
+
+ if ((cp = t->words[1]) == NULL && (cp = homedir->value) == NULL)
+ er = ": no home directory";
+ else if(chdir(cp) < 0)
+ er = ": bad directory";
+ else
+ return(0);
+ prs(cp != NULL? cp: "cd");
+ err(er);
+ return(1);
+}
+
+int
+doshift(t)
+register struct op *t;
+{
+ register n;
+
+ n = t->words[1]? getn(t->words[1]): 1;
+ if(dolc < n) {
+ err("nothing to shift");
+ return(1);
+ }
+ dolv[n] = dolv[0];
+ dolv += n;
+ dolc -= n;
+ setval(lookup("#"), putn(dolc));
+ return(0);
+}
+
+/*
+ * execute login and newgrp directly
+ */
+int
+dologin(t)
+struct op *t;
+{
+ register char *cp;
+
+ if (talking) {
+ signal(SIGINT, SIG_DFL);
+ signal(SIGQUIT, SIG_DFL);
+ }
+ cp = rexecve(t->words[0], t->words, makenv());
+ prs(t->words[0]); prs(": "); err(cp);
+ return(1);
+}
+
+int
+doumask(t)
+register struct op *t;
+{
+ register int i, n;
+ register char *cp;
+
+ if ((cp = t->words[1]) == NULL) {
+ i = umask(0);
+ umask(i);
+ for (n=3*4; (n-=3) >= 0;)
+ putc('0'+((i>>n)&07));
+ putc('\n');
+ } else {
+ for (n=0; *cp>='0' && *cp<='9'; cp++)
+ n = n*8 + (*cp-'0');
+ umask(n);
+ }
+ return(0);
+}
+
+int
+doexec(t)
+register struct op *t;
+{
+ register i;
+ jmp_buf ex;
+ xint *ofail;
+
+ t->ioact = NULL;
+ for(i = 0; (t->words[i]=t->words[i+1]) != NULL; i++)
+ ;
+ if (i == 0)
+ return(1);
+ execflg = 1;
+ ofail = failpt;
+ if (setjmp(failpt = ex) == 0)
+ execute(t, NOPIPE, NOPIPE, FEXEC);
+ failpt = ofail;
+ execflg = 0;
+ return(1);
+}
+
+int
+dodot(t)
+struct op *t;
+{
+ register i;
+ register char *sp, *tp;
+ char *cp;
+
+ if ((cp = t->words[1]) == NULL)
+ return(0);
+ sp = any('/', cp)? ":": path->value;
+ while (*sp) {
+ tp = e.linep;
+ while (*sp && (*tp = *sp++) != ':')
+ tp++;
+ if (tp != e.linep)
+ *tp++ = '/';
+ for (i = 0; (*tp++ = cp[i++]) != '\0';)
+ ;
+ if ((i = open(e.linep, 0)) >= 0) {
+ exstat = 0;
+ next(remap(i));
+ return(exstat);
+ }
+ }
+ prs(cp);
+ err(": not found");
+ return(-1);
+}
+
+int
+dowait(t)
+struct op *t;
+{
+ register i;
+ register char *cp;
+
+ if ((cp = t->words[1]) != NULL) {
+ i = getn(cp);
+ if (i == 0)
+ return(0);
+ } else
+ i = -1;
+ setstatus(waitfor(i, 1));
+ return(0);
+}
+
+int
+doread(t)
+struct op *t;
+{
+ register char *cp, **wp;
+ register nb;
+ register int nl = 0;
+
+ if (t->words[1] == NULL) {
+ err("Usage: read name ...");
+ return(1);
+ }
+ for (wp = t->words+1; *wp; wp++) {
+ for (cp = e.linep; !nl && cp < elinep-1; cp++)
+ if ((nb = read(0, cp, sizeof(*cp))) != sizeof(*cp) ||
+ (nl = (*cp == '\n')) ||
+ (wp[1] && any(*cp, ifs->value)))
+ break;
+ *cp = 0;
+ if (nb <= 0)
+ break;
+ setval(lookup(*wp), e.linep);
+ }
+ return(nb <= 0);
+}
+
+int
+doeval(t)
+register struct op *t;
+{
+ return(RUN(awordlist, t->words+1, wdchar));
+}
+
+int
+dotrap(t)
+register struct op *t;
+{
+ register int n, i;
+ register int resetsig;
+
+ if (t->words[1] == NULL) {
+ for (i=0; i<=_NSIG; i++)
+ if (trap[i]) {
+ prn(i);
+ prs(": ");
+ prs(trap[i]);
+ prs("\n");
+ }
+ return(0);
+ }
+ resetsig = digit(*t->words[1]);
+ for (i = resetsig ? 1 : 2; t->words[i] != NULL; ++i) {
+ n = getsig(t->words[i]);
+ xfree(trap[n]);
+ trap[n] = 0;
+ if (!resetsig) {
+ if (*t->words[1] != '\0') {
+ trap[n] = strsave(t->words[1], 0);
+ setsig(n, sig);
+ } else
+ setsig(n, SIG_IGN);
+ } else {
+ if (talking)
+ if (n == SIGINT)
+ setsig(n, onintr);
+ else
+ setsig(n, n == SIGQUIT ? SIG_IGN
+ : SIG_DFL);
+ else
+ setsig(n, SIG_DFL);
+ }
+ }
+ return(0);
+}
+
+int
+getsig(s)
+char *s;
+{
+ register int n;
+
+ if ((n = getn(s)) < 0 || n > _NSIG) {
+ err("trap: bad signal number");
+ n = 0;
+ }
+ return(n);
+}
+
+void
+setsig(n, f)
+register n;
+_PROTOTYPE(void (*f), (int));
+{
+ if (n == 0)
+ return;
+ if (signal(n, SIG_IGN) != SIG_IGN || ourtrap[n]) {
+ ourtrap[n] = 1;
+ signal(n, f);
+ }
+}
+
+int
+getn(as)
+char *as;
+{
+ register char *s;
+ register n, m;
+
+ s = as;
+ m = 1;
+ if (*s == '-') {
+ m = -1;
+ s++;
+ }
+ for (n = 0; digit(*s); s++)
+ n = (n*10) + (*s-'0');
+ if (*s) {
+ prs(as);
+ err(": bad number");
+ }
+ return(n*m);
+}
+
+int
+dobreak(t)
+struct op *t;
+{
+ return(brkcontin(t->words[1], 1));
+}
+
+int
+docontinue(t)
+struct op *t;
+{
+ return(brkcontin(t->words[1], 0));
+}
+
+static int
+brkcontin(cp, val)
+register char *cp;
+int val;
+{
+ register struct brkcon *bc;
+ register nl;
+
+ nl = cp == NULL? 1: getn(cp);
+ if (nl <= 0)
+ nl = 999;
+ do {
+ if ((bc = brklist) == NULL)
+ break;
+ brklist = bc->nextlev;
+ } while (--nl);
+ if (nl) {
+ err("bad break/continue level");
+ return(1);
+ }
+ isbreak = val;
+ longjmp(bc->brkpt, 1);
+ /* NOTREACHED */
+}
+
+int
+doexit(t)
+struct op *t;
+{
+ register char *cp;
+
+ execflg = 0;
+ if ((cp = t->words[1]) != NULL)
+ setstatus(getn(cp));
+ leave();
+ /* NOTREACHED */
+}
+
+int
+doexport(t)
+struct op *t;
+{
+ rdexp(t->words+1, export, EXPORT);
+ return(0);
+}
+
+int
+doreadonly(t)
+struct op *t;
+{
+ rdexp(t->words+1, ronly, RONLY);
+ return(0);
+}
+
+static void
+rdexp(wp, f, key)
+register char **wp;
+void (*f)();
+int key;
+{
+ if (*wp != NULL) {
+ for (; *wp != NULL; wp++)
+ if (checkname(*wp))
+ (*f)(lookup(*wp));
+ else
+ badid(*wp);
+ } else
+ putvlist(key, 1);
+}
+
+static void
+badid(s)
+register char *s;
+{
+ prs(s);
+ err(": bad identifier");
+}
+
+int
+doset(t)
+register struct op *t;
+{
+ register struct var *vp;
+ register char *cp;
+ register n;
+
+ if ((cp = t->words[1]) == NULL) {
+ for (vp = vlist; vp; vp = vp->next)
+ varput(vp->name, 1);
+ return(0);
+ }
+ if (*cp == '-') {
+ /* bad: t->words++; */
+ for(n = 0; (t->words[n]=t->words[n+1]) != NULL; n++)
+ ;
+ if (*++cp == 0)
+ flag['x'] = flag['v'] = 0;
+ else
+ for (; *cp; cp++)
+ switch (*cp) {
+ case 'e':
+ if (!talking)
+ flag['e']++;
+ break;
+
+ default:
+ if (*cp>='a' && *cp<='z')
+ flag[*cp]++;
+ break;
+ }
+ setdash();
+ }
+ if (t->words[1]) {
+ t->words[0] = dolv[0];
+ for (n=1; t->words[n]; n++)
+ setarea((char *)t->words[n], 0);
+ dolc = n-1;
+ dolv = t->words;
+ setval(lookup("#"), putn(dolc));
+ setarea((char *)(dolv-1), 0);
+ }
+ return(0);
+}
+
+void
+varput(s, out)
+register char *s;
+int out;
+{
+ if (letnum(*s)) {
+ write(out, s, strlen(s));
+ write(out, "\n", 1);
+ }
+}
+
+
+#define SECS 60L
+#define MINS 3600L
+
+int
+dotimes()
+{
+ struct tms tbuf;
+
+ times(&tbuf);
+
+ prn((int)(tbuf.tms_cutime / MINS));
+ prs("m");
+ prn((int)((tbuf.tms_cutime % MINS) / SECS));
+ prs("s ");
+ prn((int)(tbuf.tms_cstime / MINS));
+ prs("m");
+ prn((int)((tbuf.tms_cstime % MINS) / SECS));
+ prs("s\n");
+ return(0);
+}
+
+struct builtin {
+ char *command;
+ int (*fn)();
+};
+static struct builtin builtin[] = {
+ ":", dolabel,
+ "cd", dochdir,
+ "shift", doshift,
+ "exec", doexec,
+ "wait", dowait,
+ "read", doread,
+ "eval", doeval,
+ "trap", dotrap,
+ "break", dobreak,
+ "continue", docontinue,
+ "exit", doexit,
+ "export", doexport,
+ "readonly", doreadonly,
+ "set", doset,
+ ".", dodot,
+ "umask", doumask,
+ "login", dologin,
+ "newgrp", dologin,
+ "times", dotimes,
+ 0,
+};
+
+int (*inbuilt(s))()
+register char *s;
+{
+ register struct builtin *bp;
+
+ for (bp = builtin; bp->command != NULL; bp++)
+ if (strcmp(bp->command, s) == 0)
+ return(bp->fn);
+ return((int(*)())NULL);
+}
+
diff --git a/release/picobsd/tinyware/msh/sh4.c b/release/picobsd/tinyware/msh/sh4.c
new file mode 100644
index 000000000000..ac2a5827aeea
--- /dev/null
+++ b/release/picobsd/tinyware/msh/sh4.c
@@ -0,0 +1,767 @@
+#define Extern extern
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <limits.h>
+#include <signal.h>
+#define _NSIG NSIG
+#include <errno.h>
+#include <setjmp.h>
+#include "sh.h"
+
+/* -------- eval.c -------- */
+/* #include "sh.h" */
+/* #include "word.h" */
+
+/*
+ * ${}
+ * `command`
+ * blank interpretation
+ * quoting
+ * glob
+ */
+
+_PROTOTYPE(static int expand, (char *cp, struct wdblock **wbp, int f ));
+_PROTOTYPE(static char *blank, (int f ));
+_PROTOTYPE(static int dollar, (int quoted ));
+_PROTOTYPE(static int grave, (int quoted ));
+_PROTOTYPE(void globname, (char *we, char *pp ));
+_PROTOTYPE(static char *generate, (char *start1, char *end1, char *middle, char *end ));
+_PROTOTYPE(static int anyspcl, (struct wdblock *wb ));
+_PROTOTYPE(static int xstrcmp, (char *p1, char *p2 ));
+_PROTOTYPE(void glob0, (char *a0, unsigned int a1, int a2, int (*a3)(char *, char *)));
+_PROTOTYPE(void glob1, (char *base, char *lim ));
+_PROTOTYPE(void glob2, (char *i, char *j ));
+_PROTOTYPE(void glob3, (char *i, char *j, char *k ));
+_PROTOTYPE(char *memcopy, (char *ato, char *from, int nb ));
+
+char **
+eval(ap, f)
+register char **ap;
+int f;
+{
+ struct wdblock *wb;
+ char **wp;
+ char **wf;
+ jmp_buf ev;
+
+ wp = NULL;
+ wb = NULL;
+ wf = NULL;
+ if (newenv(setjmp(errpt = ev)) == 0) {
+ while (*ap && isassign(*ap))
+ expand(*ap++, &wb, f & ~DOGLOB);
+ if (flag['k']) {
+ for (wf = ap; *wf; wf++) {
+ if (isassign(*wf))
+ expand(*wf, &wb, f & ~DOGLOB);
+ }
+ }
+ for (wb = addword((char *)0, wb); *ap; ap++) {
+ if (!flag['k'] || !isassign(*ap))
+ expand(*ap, &wb, f & ~DOKEY);
+ }
+ wb = addword((char *)0, wb);
+ wp = getwords(wb);
+ quitenv();
+ } else
+ gflg = 1;
+ return(gflg? (char **)NULL: wp);
+}
+
+/*
+ * Make the exported environment from the exported
+ * names in the dictionary. Keyword assignments
+ * will already have been done.
+ */
+char **
+makenv()
+
+{
+ register struct wdblock *wb;
+ register struct var *vp;
+
+ wb = NULL;
+ for (vp = vlist; vp; vp = vp->next)
+ if (vp->status & EXPORT)
+ wb = addword(vp->name, wb);
+ wb = addword((char *)0, wb);
+ return(getwords(wb));
+}
+
+char *
+evalstr(cp, f)
+register char *cp;
+int f;
+{
+ struct wdblock *wb;
+
+ wb = NULL;
+ if (expand(cp, &wb, f)) {
+ if (wb == NULL || wb->w_nword == 0 || (cp = wb->w_words[0]) == NULL)
+ cp = "";
+ DELETE(wb);
+ } else
+ cp = NULL;
+ return(cp);
+}
+
+static int
+expand(cp, wbp, f)
+register char *cp;
+register struct wdblock **wbp;
+int f;
+{
+ jmp_buf ev;
+
+ gflg = 0;
+ if (cp == NULL)
+ return(0);
+ if (!anys("$`'\"", cp) &&
+ !anys(ifs->value, cp) &&
+ ((f&DOGLOB)==0 || !anys("[*?", cp))) {
+ cp = strsave(cp, areanum);
+ if (f & DOTRIM)
+ unquote(cp);
+ *wbp = addword(cp, *wbp);
+ return(1);
+ }
+ if (newenv(setjmp(errpt = ev)) == 0) {
+ PUSHIO(aword, cp, strchar);
+ e.iobase = e.iop;
+ while ((cp = blank(f)) && gflg == 0) {
+ e.linep = cp;
+ cp = strsave(cp, areanum);
+ if ((f&DOGLOB) == 0) {
+ if (f & DOTRIM)
+ unquote(cp);
+ *wbp = addword(cp, *wbp);
+ } else
+ *wbp = glob(cp, *wbp);
+ }
+ quitenv();
+ } else
+ gflg = 1;
+ return(gflg == 0);
+}
+
+/*
+ * Blank interpretation and quoting
+ */
+static char *
+blank(f)
+int f;
+{
+ register c, c1;
+ register char *sp;
+ int scanequals, foundequals;
+
+ sp = e.linep;
+ scanequals = f & DOKEY;
+ foundequals = 0;
+
+loop:
+ switch (c = subgetc('"', foundequals)) {
+ case 0:
+ if (sp == e.linep)
+ return(0);
+ *e.linep++ = 0;
+ return(sp);
+
+ default:
+ if (f & DOBLANK && any(c, ifs->value))
+ goto loop;
+ break;
+
+ case '"':
+ case '\'':
+ scanequals = 0;
+ if (INSUB())
+ break;
+ for (c1 = c; (c = subgetc(c1, 1)) != c1;) {
+ if (c == 0)
+ break;
+ if (c == '\'' || !any(c, "$`\""))
+ c |= QUOTE;
+ *e.linep++ = c;
+ }
+ c = 0;
+ }
+ unget(c);
+ if (!letter(c))
+ scanequals = 0;
+ for (;;) {
+ c = subgetc('"', foundequals);
+ if (c == 0 ||
+ f & (DOBLANK && any(c, ifs->value)) ||
+ (!INSUB() && any(c, "\"'"))) {
+ scanequals = 0;
+ unget(c);
+ if (any(c, "\"'"))
+ goto loop;
+ break;
+ }
+ if (scanequals)
+ if (c == '=') {
+ foundequals = 1;
+ scanequals = 0;
+ }
+ else if (!letnum(c))
+ scanequals = 0;
+ *e.linep++ = c;
+ }
+ *e.linep++ = 0;
+ return(sp);
+}
+
+/*
+ * Get characters, substituting for ` and $
+ */
+int
+subgetc(ec, quoted)
+register char ec;
+int quoted;
+{
+ register char c;
+
+again:
+ c = getc(ec);
+ if (!INSUB() && ec != '\'') {
+ if (c == '`') {
+ if (grave(quoted) == 0)
+ return(0);
+ e.iop->task = XGRAVE;
+ goto again;
+ }
+ if (c == '$' && (c = dollar(quoted)) == 0) {
+ e.iop->task = XDOLL;
+ goto again;
+ }
+ }
+ return(c);
+}
+
+/*
+ * Prepare to generate the string returned by ${} substitution.
+ */
+static int
+dollar(quoted)
+int quoted;
+{
+ int otask;
+ struct io *oiop;
+ char *dolp;
+ register char *s, c, *cp;
+ struct var *vp;
+
+ c = readc();
+ s = e.linep;
+ if (c != '{') {
+ *e.linep++ = c;
+ if (letter(c)) {
+ while ((c = readc())!=0 && letnum(c))
+ if (e.linep < elinep)
+ *e.linep++ = c;
+ unget(c);
+ }
+ c = 0;
+ } else {
+ oiop = e.iop;
+ otask = e.iop->task;
+ e.iop->task = XOTHER;
+ while ((c = subgetc('"', 0))!=0 && c!='}' && c!='\n')
+ if (e.linep < elinep)
+ *e.linep++ = c;
+ if (oiop == e.iop)
+ e.iop->task = otask;
+ if (c != '}') {
+ err("unclosed ${");
+ gflg++;
+ return(c);
+ }
+ }
+ if (e.linep >= elinep) {
+ err("string in ${} too long");
+ gflg++;
+ e.linep -= 10;
+ }
+ *e.linep = 0;
+ if (*s)
+ for (cp = s+1; *cp; cp++)
+ if (any(*cp, "=-+?")) {
+ c = *cp;
+ *cp++ = 0;
+ break;
+ }
+ if (s[1] == 0 && (*s == '*' || *s == '@')) {
+ if (dolc > 1) {
+ /* currently this does not distinguish $* and $@ */
+ /* should check dollar */
+ e.linep = s;
+ PUSHIO(awordlist, dolv+1, dolchar);
+ return(0);
+ } else { /* trap the nasty ${=} */
+ s[0] = '1';
+ s[1] = 0;
+ }
+ }
+ vp = lookup(s);
+ if ((dolp = vp->value) == null) {
+ switch (c) {
+ case '=':
+ if (digit(*s)) {
+ err("cannot use ${...=...} with $n");
+ gflg++;
+ break;
+ }
+ setval(vp, cp);
+ dolp = vp->value;
+ break;
+
+ case '-':
+ dolp = strsave(cp, areanum);
+ break;
+
+ case '?':
+ if (*cp == 0) {
+ prs("missing value for ");
+ err(s);
+ } else
+ err(cp);
+ gflg++;
+ break;
+ }
+ } else if (c == '+')
+ dolp = strsave(cp, areanum);
+ if (flag['u'] && dolp == null) {
+ prs("unset variable: ");
+ err(s);
+ gflg++;
+ }
+ e.linep = s;
+ PUSHIO(aword, dolp, quoted ? qstrchar : strchar);
+ return(0);
+}
+
+/*
+ * Run the command in `...` and read its output.
+ */
+static int
+grave(quoted)
+int quoted;
+{
+ register char *cp;
+ register int i;
+ int pf[2];
+
+ for (cp = e.iop->argp->aword; *cp != '`'; cp++)
+ if (*cp == 0) {
+ err("no closing `");
+ return(0);
+ }
+ if (openpipe(pf) < 0)
+ return(0);
+ if ((i = fork()) == -1) {
+ closepipe(pf);
+ err("try again");
+ return(0);
+ }
+ if (i != 0) {
+ e.iop->argp->aword = ++cp;
+ close(pf[1]);
+ PUSHIO(afile, remap(pf[0]), quoted? qgravechar: gravechar);
+ return(1);
+ }
+ *cp = 0;
+ /* allow trapped signals */
+ for (i=0; i<=_NSIG; i++)
+ if (ourtrap[i] && signal(i, SIG_IGN) != SIG_IGN)
+ signal(i, SIG_DFL);
+ dup2(pf[1], 1);
+ closepipe(pf);
+ flag['e'] = 0;
+ flag['v'] = 0;
+ flag['n'] = 0;
+ cp = strsave(e.iop->argp->aword, 0);
+ areanum = 1;
+ freehere(areanum);
+ freearea(areanum); /* free old space */
+ e.oenv = NULL;
+ e.iop = (e.iobase = iostack) - 1;
+ unquote(cp);
+ talking = 0;
+ PUSHIO(aword, cp, nlchar);
+ onecommand();
+ exit(1);
+}
+
+char *
+unquote(as)
+register char *as;
+{
+ register char *s;
+
+ if ((s = as) != NULL)
+ while (*s)
+ *s++ &= ~QUOTE;
+ return(as);
+}
+
+/* -------- glob.c -------- */
+/* #include "sh.h" */
+
+/*
+ * glob
+ */
+
+#define scopy(x) strsave((x), areanum)
+#define BLKSIZ 512
+#define NDENT ((BLKSIZ+sizeof(struct dirent)-1)/sizeof(struct dirent))
+
+static struct wdblock *cl, *nl;
+static char spcl[] = "[?*";
+
+struct wdblock *
+glob(cp, wb)
+char *cp;
+struct wdblock *wb;
+{
+ register i;
+ register char *pp;
+
+ if (cp == 0)
+ return(wb);
+ i = 0;
+ for (pp = cp; *pp; pp++)
+ if (any(*pp, spcl))
+ i++;
+ else if (!any(*pp & ~QUOTE, spcl))
+ *pp &= ~QUOTE;
+ if (i != 0) {
+ for (cl = addword(scopy(cp), (struct wdblock *)0); anyspcl(cl); cl = nl) {
+ nl = newword(cl->w_nword*2);
+ for(i=0; i<cl->w_nword; i++) { /* for each argument */
+ for (pp = cl->w_words[i]; *pp; pp++)
+ if (any(*pp, spcl)) {
+ globname(cl->w_words[i], pp);
+ break;
+ }
+ if (*pp == '\0')
+ nl = addword(scopy(cl->w_words[i]), nl);
+ }
+ for(i=0; i<cl->w_nword; i++)
+ DELETE(cl->w_words[i]);
+ DELETE(cl);
+ }
+ for(i=0; i<cl->w_nword; i++)
+ unquote(cl->w_words[i]);
+ glob0((char *)cl->w_words, cl->w_nword, sizeof(char *), xstrcmp);
+ if (cl->w_nword) {
+ for (i=0; i<cl->w_nword; i++)
+ wb = addword(cl->w_words[i], wb);
+ DELETE(cl);
+ return(wb);
+ }
+ }
+ wb = addword(unquote(cp), wb);
+ return(wb);
+}
+
+void
+globname(we, pp)
+char *we;
+register char *pp;
+{
+ register char *np, *cp;
+ char *name, *gp, *dp;
+ int dn, j, n, k;
+ DIR *dirp;
+ struct dirent *de;
+ char dname[NAME_MAX+1];
+ struct stat dbuf;
+
+ for (np = we; np != pp; pp--)
+ if (pp[-1] == '/')
+ break;
+ for (dp = cp = space((int)(pp-np)+3); np < pp;)
+ *cp++ = *np++;
+ *cp++ = '.';
+ *cp = '\0';
+ for (gp = cp = space(strlen(pp)+1); *np && *np != '/';)
+ *cp++ = *np++;
+ *cp = '\0';
+ dirp = opendir(dp);
+ if (dirp == 0) {
+ DELETE(dp);
+ DELETE(gp);
+ return;
+ }
+ dname[NAME_MAX] = '\0';
+ while ((de=readdir(dirp))!=NULL) {
+ /* XXX Hmmm... What this could be? (abial) */
+ /*
+ if (ent[j].d_ino == 0)
+ continue;
+ */
+ strncpy(dname, de->d_name, NAME_MAX);
+ if (dname[0] == '.')
+ if (*gp != '.')
+ continue;
+ for(k=0; k<NAME_MAX; k++)
+ if (any(dname[k], spcl))
+ dname[k] |= QUOTE;
+ if (gmatch(dname, gp)) {
+ name = generate(we, pp, dname, np);
+ if (*np && !anys(np, spcl)) {
+ if (stat(name,&dbuf)) {
+ DELETE(name);
+ continue;
+ }
+ }
+ nl = addword(name, nl);
+ }
+ }
+ closedir(dirp);
+ DELETE(dp);
+ DELETE(gp);
+}
+
+/*
+ * generate a pathname as below.
+ * start..end1 / middle end
+ * the slashes come for free
+ */
+static char *
+generate(start1, end1, middle, end)
+char *start1;
+register char *end1;
+char *middle, *end;
+{
+ char *p;
+ register char *op, *xp;
+
+ p = op = space((int)(end1-start1)+strlen(middle)+strlen(end)+2);
+ for (xp = start1; xp != end1;)
+ *op++ = *xp++;
+ for (xp = middle; (*op++ = *xp++) != '\0';)
+ ;
+ op--;
+ for (xp = end; (*op++ = *xp++) != '\0';)
+ ;
+ return(p);
+}
+
+static int
+anyspcl(wb)
+register struct wdblock *wb;
+{
+ register i;
+ register char **wd;
+
+ wd = wb->w_words;
+ for (i=0; i<wb->w_nword; i++)
+ if (anys(spcl, *wd++))
+ return(1);
+ return(0);
+}
+
+static int
+xstrcmp(p1, p2)
+char *p1, *p2;
+{
+ return(strcmp(*(char **)p1, *(char **)p2));
+}
+
+/* -------- word.c -------- */
+/* #include "sh.h" */
+/* #include "word.h" */
+
+#define NSTART 16 /* default number of words to allow for initially */
+
+struct wdblock *
+newword(nw)
+register int nw;
+{
+ register struct wdblock *wb;
+
+ wb = (struct wdblock *) space(sizeof(*wb) + nw*sizeof(char *));
+ wb->w_bsize = nw;
+ wb->w_nword = 0;
+ return(wb);
+}
+
+struct wdblock *
+addword(wd, wb)
+char *wd;
+register struct wdblock *wb;
+{
+ register struct wdblock *wb2;
+ register nw;
+
+ if (wb == NULL)
+ wb = newword(NSTART);
+ if ((nw = wb->w_nword) >= wb->w_bsize) {
+ wb2 = newword(nw * 2);
+ memcopy((char *)wb2->w_words, (char *)wb->w_words, nw*sizeof(char *));
+ wb2->w_nword = nw;
+ DELETE(wb);
+ wb = wb2;
+ }
+ wb->w_words[wb->w_nword++] = wd;
+ return(wb);
+}
+
+char **
+getwords(wb)
+register struct wdblock *wb;
+{
+ register char **wd;
+ register nb;
+
+ if (wb == NULL)
+ return((char **)NULL);
+ if (wb->w_nword == 0) {
+ DELETE(wb);
+ return((char **)NULL);
+ }
+ wd = (char **) space(nb = sizeof(*wd) * wb->w_nword);
+ memcopy((char *)wd, (char *)wb->w_words, nb);
+ DELETE(wb); /* perhaps should done by caller */
+ return(wd);
+}
+
+_PROTOTYPE(int (*func), (char *, char *));
+int globv;
+
+void
+glob0(a0, a1, a2, a3)
+char *a0;
+unsigned a1;
+int a2;
+_PROTOTYPE(int (*a3), (char *, char *));
+{
+ func = a3;
+ globv = a2;
+ glob1(a0, a0 + a1 * a2);
+}
+
+void
+glob1(base, lim)
+char *base, *lim;
+{
+ register char *i, *j;
+ int v2;
+ char *lptr, *hptr;
+ int c;
+ unsigned n;
+
+
+ v2 = globv;
+
+top:
+ if ((n=(int)(lim-base)) <= v2)
+ return;
+ n = v2 * (n / (2*v2));
+ hptr = lptr = base+n;
+ i = base;
+ j = lim-v2;
+ for(;;) {
+ if (i < lptr) {
+ if ((c = (*func)(i, lptr)) == 0) {
+ glob2(i, lptr -= v2);
+ continue;
+ }
+ if (c < 0) {
+ i += v2;
+ continue;
+ }
+ }
+
+begin:
+ if (j > hptr) {
+ if ((c = (*func)(hptr, j)) == 0) {
+ glob2(hptr += v2, j);
+ goto begin;
+ }
+ if (c > 0) {
+ if (i == lptr) {
+ glob3(i, hptr += v2, j);
+ i = lptr += v2;
+ goto begin;
+ }
+ glob2(i, j);
+ j -= v2;
+ i += v2;
+ continue;
+ }
+ j -= v2;
+ goto begin;
+ }
+
+
+ if (i == lptr) {
+ if (lptr-base >= lim-hptr) {
+ glob1(hptr+v2, lim);
+ lim = lptr;
+ } else {
+ glob1(base, lptr);
+ base = hptr+v2;
+ }
+ goto top;
+ }
+
+
+ glob3(j, lptr -= v2, i);
+ j = hptr -= v2;
+ }
+}
+
+void
+glob2(i, j)
+char *i, *j;
+{
+ register char *index1, *index2, c;
+ int m;
+
+ m = globv;
+ index1 = i;
+ index2 = j;
+ do {
+ c = *index1;
+ *index1++ = *index2;
+ *index2++ = c;
+ } while(--m);
+}
+
+void
+glob3(i, j, k)
+char *i, *j, *k;
+{
+ register char *index1, *index2, *index3;
+ int c;
+ int m;
+
+ m = globv;
+ index1 = i;
+ index2 = j;
+ index3 = k;
+ do {
+ c = *index1;
+ *index1++ = *index3;
+ *index3++ = *index2;
+ *index2++ = c;
+ } while(--m);
+}
+
+char *
+memcopy(ato, from, nb)
+register char *ato, *from;
+register int nb;
+{
+ register char *to;
+
+ to = ato;
+ while (--nb >= 0)
+ *to++ = *from++;
+ return(ato);
+}
diff --git a/release/picobsd/tinyware/msh/sh5.c b/release/picobsd/tinyware/msh/sh5.c
new file mode 100644
index 000000000000..74feac9cebce
--- /dev/null
+++ b/release/picobsd/tinyware/msh/sh5.c
@@ -0,0 +1,675 @@
+#define Extern extern
+#include <sys/types.h>
+#include <signal.h>
+#define _NSIG NSIG
+#include <errno.h>
+#include <setjmp.h>
+#include "sh.h"
+
+/* -------- io.c -------- */
+/* #include "sh.h" */
+
+/*
+ * shell IO
+ */
+
+static struct iobuf sharedbuf = {AFID_NOBUF};
+static struct iobuf mainbuf = {AFID_NOBUF};
+static unsigned bufid = AFID_ID; /* buffer id counter */
+
+struct ioarg temparg = {0, 0, 0, AFID_NOBUF, 0};
+
+_PROTOTYPE(static void readhere, (char **name, char *s, int ec ));
+_PROTOTYPE(void pushio, (struct ioarg *argp, int (*fn)()));
+_PROTOTYPE(static int xxchar, (struct ioarg *ap ));
+_PROTOTYPE(void tempname, (char *tname ));
+
+int
+getc(ec)
+register int ec;
+{
+ register int c;
+
+ if(e.linep > elinep) {
+ while((c=readc()) != '\n' && c)
+ ;
+ err("input line too long");
+ gflg++;
+ return(c);
+ }
+ c = readc();
+ if (ec != '\'' && e.iop->task != XGRAVE) {
+ if(c == '\\') {
+ c = readc();
+ if (c == '\n' && ec != '\"')
+ return(getc(ec));
+ c |= QUOTE;
+ }
+ }
+ return(c);
+}
+
+void
+unget(c)
+int c;
+{
+ if (e.iop >= e.iobase)
+ e.iop->peekc = c;
+}
+
+int
+eofc()
+
+{
+ return e.iop < e.iobase || (e.iop->peekc == 0 && e.iop->prev == 0);
+}
+
+int
+readc()
+{
+ register c;
+
+ for (; e.iop >= e.iobase; e.iop--)
+ if ((c = e.iop->peekc) != '\0') {
+ e.iop->peekc = 0;
+ return(c);
+ }
+ else {
+ if (e.iop->prev != 0) {
+ if ((c = (*e.iop->iofn)(e.iop->argp, e.iop)) != '\0') {
+ if (c == -1) {
+ e.iop++;
+ continue;
+ }
+ if (e.iop == iostack)
+ ioecho(c);
+ return(e.iop->prev = c);
+ }
+ else if (e.iop->task == XIO && e.iop->prev != '\n') {
+ e.iop->prev = 0;
+ if (e.iop == iostack)
+ ioecho('\n');
+ return '\n';
+ }
+ }
+ if (e.iop->task == XIO) {
+ if (multiline)
+ return e.iop->prev = 0;
+ if (talking && e.iop == iostack+1)
+ prs(prompt->value);
+ }
+ }
+ if (e.iop >= iostack)
+ return(0);
+ leave();
+ /* NOTREACHED */
+}
+
+void
+ioecho(c)
+char c;
+{
+ if (flag['v'])
+ write(2, &c, sizeof c);
+}
+
+void
+pushio(argp, fn)
+struct ioarg *argp;
+int (*fn)();
+{
+ if (++e.iop >= &iostack[NPUSH]) {
+ e.iop--;
+ err("Shell input nested too deeply");
+ gflg++;
+ return;
+ }
+ e.iop->iofn = fn;
+
+ if (argp->afid != AFID_NOBUF)
+ e.iop->argp = argp;
+ else {
+ e.iop->argp = ioargstack + (e.iop - iostack);
+ *e.iop->argp = *argp;
+ e.iop->argp->afbuf = e.iop == &iostack[0] ? &mainbuf : &sharedbuf;
+ if (isatty(e.iop->argp->afile) == 0 &&
+ (e.iop == &iostack[0] ||
+ lseek(e.iop->argp->afile, 0L, 1) != -1)) {
+ if (++bufid == AFID_NOBUF)
+ bufid = AFID_ID;
+ e.iop->argp->afid = bufid;
+ }
+ }
+
+ e.iop->prev = ~'\n';
+ e.iop->peekc = 0;
+ e.iop->xchar = 0;
+ e.iop->nlcount = 0;
+ if (fn == filechar || fn == linechar)
+ e.iop->task = XIO;
+ else if (fn == gravechar || fn == qgravechar)
+ e.iop->task = XGRAVE;
+ else
+ e.iop->task = XOTHER;
+}
+
+struct io *
+setbase(ip)
+struct io *ip;
+{
+ register struct io *xp;
+
+ xp = e.iobase;
+ e.iobase = ip;
+ return(xp);
+}
+
+/*
+ * Input generating functions
+ */
+
+/*
+ * Produce the characters of a string, then a newline, then EOF.
+ */
+int
+nlchar(ap)
+register struct ioarg *ap;
+{
+ register int c;
+
+ if (ap->aword == NULL)
+ return(0);
+ if ((c = *ap->aword++) == 0) {
+ ap->aword = NULL;
+ return('\n');
+ }
+ return(c);
+}
+
+/*
+ * Given a list of words, produce the characters
+ * in them, with a space after each word.
+ */
+int
+wdchar(ap)
+register struct ioarg *ap;
+{
+ register char c;
+ register char **wl;
+
+ if ((wl = ap->awordlist) == NULL)
+ return(0);
+ if (*wl != NULL) {
+ if ((c = *(*wl)++) != 0)
+ return(c & 0177);
+ ap->awordlist++;
+ return(' ');
+ }
+ ap->awordlist = NULL;
+ return('\n');
+}
+
+/*
+ * Return the characters of a list of words,
+ * producing a space between them.
+ */
+int
+dolchar(ap)
+register struct ioarg *ap;
+{
+ register char *wp;
+
+ if ((wp = *ap->awordlist++) != NULL) {
+ PUSHIO(aword, wp, *ap->awordlist == NULL? strchar: xxchar);
+ return(-1);
+ }
+ return(0);
+}
+
+static int
+xxchar(ap)
+register struct ioarg *ap;
+{
+ register int c;
+
+ if (ap->aword == NULL)
+ return(0);
+ if ((c = *ap->aword++) == '\0') {
+ ap->aword = NULL;
+ return(' ');
+ }
+ return(c);
+}
+
+/*
+ * Produce the characters from a single word (string).
+ */
+int
+strchar(ap)
+register struct ioarg *ap;
+{
+ register int c;
+
+ if (ap->aword == NULL || (c = *ap->aword++) == 0)
+ return(0);
+ return(c);
+}
+
+/*
+ * Produce quoted characters from a single word (string).
+ */
+int
+qstrchar(ap)
+register struct ioarg *ap;
+{
+ register int c;
+
+ if (ap->aword == NULL || (c = *ap->aword++) == 0)
+ return(0);
+ return(c|QUOTE);
+}
+
+/*
+ * Return the characters from a file.
+ */
+int
+filechar(ap)
+register struct ioarg *ap;
+{
+ register int i;
+ char c;
+ struct iobuf *bp = ap->afbuf;
+
+ if (ap->afid != AFID_NOBUF) {
+ if ((i = ap->afid != bp->id) || bp->bufp == bp->ebufp) {
+ if (i)
+ lseek(ap->afile, ap->afpos, 0);
+ do {
+ i = read(ap->afile, bp->buf, sizeof(bp->buf));
+ } while (i < 0 && errno == EINTR);
+ if (i <= 0) {
+ closef(ap->afile);
+ return 0;
+ }
+ bp->id = ap->afid;
+ bp->ebufp = (bp->bufp = bp->buf) + i;
+ }
+ ap->afpos++;
+ return *bp->bufp++ & 0177;
+ }
+
+ do {
+ i = read(ap->afile, &c, sizeof(c));
+ } while (i < 0 && errno == EINTR);
+ return(i == sizeof(c)? c&0177: (closef(ap->afile), 0));
+}
+
+/*
+ * Return the characters from a here temp file.
+ */
+int
+herechar(ap)
+register struct ioarg *ap;
+{
+ char c;
+
+
+ if (read(ap->afile, &c, sizeof(c)) != sizeof(c)) {
+ close(ap->afile);
+ c = 0;
+ }
+ return (c);
+
+}
+
+/*
+ * Return the characters produced by a process (`...`).
+ * Quote them if required, and remove any trailing newline characters.
+ */
+int
+gravechar(ap, iop)
+struct ioarg *ap;
+struct io *iop;
+{
+ register int c;
+
+ if ((c = qgravechar(ap, iop)&~QUOTE) == '\n')
+ c = ' ';
+ return(c);
+}
+
+int
+qgravechar(ap, iop)
+register struct ioarg *ap;
+struct io *iop;
+{
+ register int c;
+
+ if (iop->xchar) {
+ if (iop->nlcount) {
+ iop->nlcount--;
+ return('\n'|QUOTE);
+ }
+ c = iop->xchar;
+ iop->xchar = 0;
+ } else if ((c = filechar(ap)) == '\n') {
+ iop->nlcount = 1;
+ while ((c = filechar(ap)) == '\n')
+ iop->nlcount++;
+ iop->xchar = c;
+ if (c == 0)
+ return(c);
+ iop->nlcount--;
+ c = '\n';
+ }
+ return(c!=0? c|QUOTE: 0);
+}
+
+/*
+ * Return a single command (usually the first line) from a file.
+ */
+int
+linechar(ap)
+register struct ioarg *ap;
+{
+ register int c;
+
+ if ((c = filechar(ap)) == '\n') {
+ if (!multiline) {
+ closef(ap->afile);
+ ap->afile = -1; /* illegal value */
+ }
+ }
+ return(c);
+}
+
+void
+prs(s)
+register char *s;
+{
+ if (*s)
+ write(2, s, strlen(s));
+}
+
+void
+putc(c)
+char c;
+{
+ write(2, &c, sizeof c);
+}
+
+void
+prn(u)
+unsigned u;
+{
+ prs(itoa(u, 0));
+}
+
+void
+closef(i)
+register int i;
+{
+ if (i > 2)
+ close(i);
+}
+
+void
+closeall()
+{
+ register u;
+
+ for (u=NUFILE; u<NOFILE;)
+ close(u++);
+}
+
+/*
+ * remap fd into Shell's fd space
+ */
+int
+remap(fd)
+register int fd;
+{
+ register int i;
+ int map[NOFILE];
+
+ if (fd < e.iofd) {
+ for (i=0; i<NOFILE; i++)
+ map[i] = 0;
+ do {
+ map[fd] = 1;
+ fd = dup(fd);
+ } while (fd >= 0 && fd < e.iofd);
+ for (i=0; i<NOFILE; i++)
+ if (map[i])
+ close(i);
+ if (fd < 0)
+ err("too many files open in shell");
+ }
+ return(fd);
+}
+
+int
+openpipe(pv)
+register int *pv;
+{
+ register int i;
+
+ if ((i = pipe(pv)) < 0)
+ err("can't create pipe - try again");
+ return(i);
+}
+
+void
+closepipe(pv)
+register int *pv;
+{
+ if (pv != NULL) {
+ close(*pv++);
+ close(*pv);
+ }
+}
+
+/* -------- here.c -------- */
+/* #include "sh.h" */
+
+/*
+ * here documents
+ */
+
+struct here {
+ char *h_tag;
+ int h_dosub;
+ struct ioword *h_iop;
+ struct here *h_next;
+};
+
+static struct here *inhere; /* list of hear docs while parsing */
+static struct here *acthere; /* list of active here documents */
+
+void
+markhere(s, iop)
+register char *s;
+struct ioword *iop;
+{
+ register struct here *h, *lh;
+
+ h = (struct here *) space(sizeof(struct here));
+ if (h == 0)
+ return;
+ h->h_tag = evalstr(s, DOSUB);
+ if (h->h_tag == 0)
+ return;
+ h->h_iop = iop;
+ iop->io_name = 0;
+ h->h_next = NULL;
+ if (inhere == 0)
+ inhere = h;
+ else
+ for (lh = inhere; lh!=NULL; lh = lh->h_next)
+ if (lh->h_next == 0) {
+ lh->h_next = h;
+ break;
+ }
+ iop->io_flag |= IOHERE|IOXHERE;
+ for (s = h->h_tag; *s; s++)
+ if (*s & QUOTE) {
+ iop->io_flag &= ~ IOXHERE;
+ *s &= ~ QUOTE;
+ }
+ h->h_dosub = iop->io_flag & IOXHERE;
+}
+
+void
+gethere()
+{
+ register struct here *h, *hp;
+
+ /* Scan here files first leaving inhere list in place */
+ for (hp = h = inhere; h != NULL; hp = h, h = h->h_next)
+ readhere(&h->h_iop->io_name, h->h_tag, h->h_dosub? 0: '\'');
+
+ /* Make inhere list active - keep list intact for scraphere */
+ if (hp != NULL) {
+ hp->h_next = acthere;
+ acthere = inhere;
+ inhere = NULL;
+ }
+}
+
+static void
+readhere(name, s, ec)
+char **name;
+register char *s;
+int ec;
+{
+ int tf;
+ char tname[30];
+ register c;
+ jmp_buf ev;
+ char line [LINELIM+1];
+ char *next;
+
+ tempname(tname);
+ *name = strsave(tname, areanum);
+ tf = creat(tname, 0600);
+ if (tf < 0)
+ return;
+ if (newenv(setjmp(errpt = ev)) != 0)
+ unlink(tname);
+ else {
+ pushio(e.iop->argp, e.iop->iofn);
+ e.iobase = e.iop;
+ for (;;) {
+ if (talking && e.iop <= iostack)
+ prs(cprompt->value);
+ next = line;
+ while ((c = getc(ec)) != '\n' && c) {
+ if (ec == '\'')
+ c &= ~ QUOTE;
+ if (next >= &line[LINELIM]) {
+ c = 0;
+ break;
+ }
+ *next++ = c;
+ }
+ *next = 0;
+ if (strcmp(s, line) == 0 || c == 0)
+ break;
+ *next++ = '\n';
+ write (tf, line, (int)(next-line));
+ }
+ if (c == 0) {
+ prs("here document `"); prs(s); err("' unclosed");
+ }
+ quitenv();
+ }
+ close(tf);
+}
+
+/*
+ * open here temp file.
+ * if unquoted here, expand here temp file into second temp file.
+ */
+int
+herein(hname, xdoll)
+char *hname;
+int xdoll;
+{
+ register hf, tf;
+
+ if (hname == 0)
+ return(-1);
+ hf = open(hname, 0);
+ if (hf < 0)
+ return (-1);
+ if (xdoll) {
+ char c;
+ char tname[30];
+ jmp_buf ev;
+
+ tempname(tname);
+ if ((tf = creat(tname, 0600)) < 0)
+ return (-1);
+ if (newenv(setjmp(errpt = ev)) == 0) {
+ PUSHIO(afile, hf, herechar);
+ setbase(e.iop);
+ while ((c = subgetc(0, 0)) != 0) {
+ c &= ~ QUOTE;
+ write(tf, &c, sizeof c);
+ }
+ quitenv();
+ } else
+ unlink(tname);
+ close(tf);
+ tf = open(tname, 0);
+ unlink(tname);
+ return (tf);
+ } else
+ return (hf);
+}
+
+void
+scraphere()
+{
+ register struct here *h;
+
+ for (h = inhere; h != NULL; h = h->h_next) {
+ if (h->h_iop && h->h_iop->io_name)
+ unlink(h->h_iop->io_name);
+ }
+ inhere = NULL;
+}
+
+/* unlink here temp files before a freearea(area) */
+void
+freehere(area)
+int area;
+{
+ register struct here *h, *hl;
+
+ hl = NULL;
+ for (h = acthere; h != NULL; h = h->h_next)
+ if (getarea((char *) h) >= area) {
+ if (h->h_iop->io_name != NULL)
+ unlink(h->h_iop->io_name);
+ if (hl == NULL)
+ acthere = h->h_next;
+ else
+ hl->h_next = h->h_next;
+ } else
+ hl = h;
+}
+
+void
+tempname(tname)
+char *tname;
+{
+ static int inc;
+ register char *cp, *lp;
+
+ for (cp = tname, lp = "/tmp/shtm"; (*cp = *lp++) != '\0'; cp++)
+ ;
+ lp = putn(getpid()*1000 + inc++);
+ for (; (*cp = *lp++) != '\0'; cp++)
+ ;
+}
diff --git a/release/picobsd/tinyware/msh/sh6.c b/release/picobsd/tinyware/msh/sh6.c
new file mode 100644
index 000000000000..bd3ba05aeab3
--- /dev/null
+++ b/release/picobsd/tinyware/msh/sh6.c
@@ -0,0 +1,9 @@
+#define Extern
+
+#include <sys/types.h>
+#include <signal.h>
+#define _NSIG NSIG
+#include <errno.h>
+#include <setjmp.h>
+#include "sh.h"
+