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Diffstat (limited to 'contrib/cvs/diff/diff.h')
| -rw-r--r-- | contrib/cvs/diff/diff.h | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/contrib/cvs/diff/diff.h b/contrib/cvs/diff/diff.h deleted file mode 100644 index 642138d6ef0b..000000000000 --- a/contrib/cvs/diff/diff.h +++ /dev/null @@ -1,354 +0,0 @@ -/* Shared definitions for GNU DIFF - Copyright (C) 1988, 89, 91, 92, 93, 97, 1998 Free Software Foundation, Inc. - -This file is part of GNU DIFF. - -GNU DIFF is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU DIFF is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -*/ - -#include "system.h" -#include <stdio.h> -#include <setjmp.h> -#include "regex.h" -#include "diffrun.h" - -#define TAB_WIDTH 8 - -/* Variables for command line options */ - -#ifndef GDIFF_MAIN -#define EXTERN extern -#else -#define EXTERN -#endif - -/* The callbacks to use for output. */ -EXTERN const struct diff_callbacks *callbacks; - -enum output_style { - /* Default output style. */ - OUTPUT_NORMAL, - /* Output the differences with lines of context before and after (-c). */ - OUTPUT_CONTEXT, - /* Output the differences in a unified context diff format (-u). */ - OUTPUT_UNIFIED, - /* Output the differences as commands suitable for `ed' (-e). */ - OUTPUT_ED, - /* Output the diff as a forward ed script (-f). */ - OUTPUT_FORWARD_ED, - /* Like -f, but output a count of changed lines in each "command" (-n). */ - OUTPUT_RCS, - /* Output merged #ifdef'd file (-D). */ - OUTPUT_IFDEF, - /* Output sdiff style (-y). */ - OUTPUT_SDIFF -}; - -/* True for output styles that are robust, - i.e. can handle a file that ends in a non-newline. */ -#define ROBUST_OUTPUT_STYLE(S) ((S) != OUTPUT_ED && (S) != OUTPUT_FORWARD_ED) - -EXTERN enum output_style output_style; - -/* Nonzero if output cannot be generated for identical files. */ -EXTERN int no_diff_means_no_output; - -/* Number of lines of context to show in each set of diffs. - This is zero when context is not to be shown. */ -EXTERN int context; - -/* Consider all files as text files (-a). - Don't interpret codes over 0177 as implying a "binary file". */ -EXTERN int always_text_flag; - -/* Number of lines to keep in identical prefix and suffix. */ -EXTERN int horizon_lines; - -/* Ignore changes in horizontal white space (-b). */ -EXTERN int ignore_space_change_flag; - -/* Ignore all horizontal white space (-w). */ -EXTERN int ignore_all_space_flag; - -/* Ignore changes that affect only blank lines (-B). */ -EXTERN int ignore_blank_lines_flag; - -/* 1 if lines may match even if their contents do not match exactly. - This depends on various options. */ -EXTERN int ignore_some_line_changes; - -/* 1 if files may match even if their contents are not byte-for-byte identical. - This depends on various options. */ -EXTERN int ignore_some_changes; - -/* Ignore differences in case of letters (-i). */ -EXTERN int ignore_case_flag; - -/* File labels for `-c' output headers (-L). */ -EXTERN char *file_label[2]; - -struct regexp_list -{ - struct re_pattern_buffer buf; - struct regexp_list *next; -}; - -/* Regexp to identify function-header lines (-F). */ -EXTERN struct regexp_list *function_regexp_list; - -/* Ignore changes that affect only lines matching this regexp (-I). */ -EXTERN struct regexp_list *ignore_regexp_list; - -/* Say only whether files differ, not how (-q). */ -EXTERN int no_details_flag; - -/* Report files compared that match (-s). - Normally nothing is output when that happens. */ -EXTERN int print_file_same_flag; - -/* Output the differences with exactly 8 columns added to each line - so that any tabs in the text line up properly (-T). */ -EXTERN int tab_align_flag; - -/* Expand tabs in the output so the text lines up properly - despite the characters added to the front of each line (-t). */ -EXTERN int tab_expand_flag; - -/* In directory comparison, specify file to start with (-S). - All file names less than this name are ignored. */ -EXTERN char *dir_start_file; - -/* If a file is new (appears in only one dir) - include its entire contents (-N). - Then `patch' would create the file with appropriate contents. */ -EXTERN int entire_new_file_flag; - -/* If a file is new (appears in only the second dir) - include its entire contents (-P). - Then `patch' would create the file with appropriate contents. */ -EXTERN int unidirectional_new_file_flag; - -/* Pipe each file's output through pr (-l). */ -EXTERN int paginate_flag; - -enum line_class { - /* Lines taken from just the first file. */ - OLD, - /* Lines taken from just the second file. */ - NEW, - /* Lines common to both files. */ - UNCHANGED, - /* A hunk containing both old and new lines (line groups only). */ - CHANGED -}; - -/* Line group formats for old, new, unchanged, and changed groups. */ -EXTERN char *group_format[CHANGED + 1]; - -/* Line formats for old, new, and unchanged lines. */ -EXTERN char *line_format[UNCHANGED + 1]; - -/* If using OUTPUT_SDIFF print extra information to help the sdiff filter. */ -EXTERN int sdiff_help_sdiff; - -/* Tell OUTPUT_SDIFF to show only the left version of common lines. */ -EXTERN int sdiff_left_only; - -/* Tell OUTPUT_SDIFF to not show common lines. */ -EXTERN int sdiff_skip_common_lines; - -/* The half line width and column 2 offset for OUTPUT_SDIFF. */ -EXTERN unsigned sdiff_half_width; -EXTERN unsigned sdiff_column2_offset; - -/* String containing all the command options diff received, - with spaces between and at the beginning but none at the end. - If there were no options given, this string is empty. */ -EXTERN char * switch_string; - -/* Nonzero means use heuristics for better speed. */ -EXTERN int heuristic; - -/* Name of program the user invoked (for error messages). */ -EXTERN char *diff_program_name; - -/* Jump buffer for nonlocal exits. */ -EXTERN jmp_buf diff_abort_buf; -#define DIFF_ABORT(retval) longjmp(diff_abort_buf, retval) - -/* The result of comparison is an "edit script": a chain of `struct change'. - Each `struct change' represents one place where some lines are deleted - and some are inserted. - - LINE0 and LINE1 are the first affected lines in the two files (origin 0). - DELETED is the number of lines deleted here from file 0. - INSERTED is the number of lines inserted here in file 1. - - If DELETED is 0 then LINE0 is the number of the line before - which the insertion was done; vice versa for INSERTED and LINE1. */ - -struct change -{ - struct change *link; /* Previous or next edit command */ - int inserted; /* # lines of file 1 changed here. */ - int deleted; /* # lines of file 0 changed here. */ - int line0; /* Line number of 1st deleted line. */ - int line1; /* Line number of 1st inserted line. */ - char ignore; /* Flag used in context.c */ -}; - -/* Structures that describe the input files. */ - -/* Data on one input file being compared. */ - -struct file_data { - int desc; /* File descriptor */ - char const *name; /* File name */ - struct stat stat; /* File status from fstat() */ - int dir_p; /* nonzero if file is a directory */ - - /* Buffer in which text of file is read. */ - char * buffer; - /* Allocated size of buffer. */ - size_t bufsize; - /* Number of valid characters now in the buffer. */ - size_t buffered_chars; - - /* Array of pointers to lines in the file. */ - char const **linbuf; - - /* linbuf_base <= buffered_lines <= valid_lines <= alloc_lines. - linebuf[linbuf_base ... buffered_lines - 1] are possibly differing. - linebuf[linbuf_base ... valid_lines - 1] contain valid data. - linebuf[linbuf_base ... alloc_lines - 1] are allocated. */ - int linbuf_base, buffered_lines, valid_lines, alloc_lines; - - /* Pointer to end of prefix of this file to ignore when hashing. */ - char const *prefix_end; - - /* Count of lines in the prefix. - There are this many lines in the file before linbuf[0]. */ - int prefix_lines; - - /* Pointer to start of suffix of this file to ignore when hashing. */ - char const *suffix_begin; - - /* Vector, indexed by line number, containing an equivalence code for - each line. It is this vector that is actually compared with that - of another file to generate differences. */ - int *equivs; - - /* Vector, like the previous one except that - the elements for discarded lines have been squeezed out. */ - int *undiscarded; - - /* Vector mapping virtual line numbers (not counting discarded lines) - to real ones (counting those lines). Both are origin-0. */ - int *realindexes; - - /* Total number of nondiscarded lines. */ - int nondiscarded_lines; - - /* Vector, indexed by real origin-0 line number, - containing 1 for a line that is an insertion or a deletion. - The results of comparison are stored here. */ - char *changed_flag; - - /* 1 if file ends in a line with no final newline. */ - int missing_newline; - - /* 1 more than the maximum equivalence value used for this or its - sibling file. */ - int equiv_max; -}; - -/* Describe the two files currently being compared. */ - -EXTERN struct file_data files[2]; - -/* Stdio stream to output diffs to. */ - -EXTERN FILE *outfile; - -/* Declare various functions. */ - -/* analyze.c */ -int diff_2_files PARAMS((struct file_data[], int)); - -/* context.c */ -void print_context_header PARAMS((struct file_data[], int)); -void print_context_script PARAMS((struct change *, int)); - -/* diff.c */ -int excluded_filename PARAMS((char const *)); - -/* dir.c */ -int diff_dirs PARAMS((struct file_data const[], int (*) PARAMS((char const *, char const *, char const *, char const *, int)), int)); - -/* ed.c */ -void print_ed_script PARAMS((struct change *)); -void pr_forward_ed_script PARAMS((struct change *)); - -/* ifdef.c */ -void print_ifdef_script PARAMS((struct change *)); - -/* io.c */ -int read_files PARAMS((struct file_data[], int)); -int sip PARAMS((struct file_data *, int)); -void slurp PARAMS((struct file_data *)); - -/* normal.c */ -void print_normal_script PARAMS((struct change *)); - -/* rcs.c */ -void print_rcs_script PARAMS((struct change *)); - -/* side.c */ -void print_sdiff_script PARAMS((struct change *)); - -/* util.c */ -VOID *xmalloc PARAMS((size_t)); -VOID *xrealloc PARAMS((VOID *, size_t)); -char *concat PARAMS((char const *, char const *, char const *)); -char *dir_file_pathname PARAMS((char const *, char const *)); -int change_letter PARAMS((int, int)); -int line_cmp PARAMS((char const *, char const *)); -int translate_line_number PARAMS((struct file_data const *, int)); -struct change *find_change PARAMS((struct change *)); -struct change *find_reverse_change PARAMS((struct change *)); -void analyze_hunk PARAMS((struct change *, int *, int *, int *, int *, int *, int *)); -void begin_output PARAMS((void)); -void debug_script PARAMS((struct change *)); -void diff_error PARAMS((char const *, char const *, char const *)); -void fatal PARAMS((char const *)); -void finish_output PARAMS((void)); -void write_output PARAMS((char const *, size_t)); -void printf_output PARAMS((char const *, ...)) -#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 6) - __attribute__ ((__format__ (__printf__, 1, 2))) -#endif - ; -void flush_output PARAMS((void)); -void message PARAMS((char const *, char const *, char const *)); -void message5 PARAMS((char const *, char const *, char const *, char const *, char const *)); -void output_1_line PARAMS((char const *, char const *, char const *, char const *)); -void perror_with_name PARAMS((char const *)); -void pfatal_with_name PARAMS((char const *)); -void print_1_line PARAMS((char const *, char const * const *)); -void print_message_queue PARAMS((void)); -void print_number_range PARAMS((int, struct file_data *, int, int)); -void print_script PARAMS((struct change *, struct change * (*) PARAMS((struct change *)), void (*) PARAMS((struct change *)))); -void setup_output PARAMS((char const *, char const *, int)); -void translate_range PARAMS((struct file_data const *, int, int, int *, int *)); - -/* version.c */ -extern char const diff_version_string[]; |