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-rw-r--r--release/picobsd/tinyware/msh/sh5.c675
1 files changed, 675 insertions, 0 deletions
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++)
+ ;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2022-08-15 07:38:34 +0000