文件比较工具代码.rar_代码比较_宸ュ叿_文件比较_比较

/* wdiff -- front end to diff for comparing on a word per word basis. Copyright (C) 1992 Free Software Foundation, Inc. Francois Pinard <[email protected]>. This program 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. This program 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. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #if HAVE_CONFIG_H # include <config.h> #endif /* Exit codes values. */ #define EXIT_NO_DIFFERENCES 0 /* no differences found */ #define EXIT_ANY_DIFFERENCE 1 /* some differences found */ #define EXIT_OTHER_REASON 2 /* any other reason for exit */ /* It is mandatory that some `diff' program is selected for use. The following definition may also include the complete path. */ #ifndef DIFF_PROGRAM # define DIFF_PROGRAM "diff" #endif /* One may also, optionnaly, define a default PAGER_PROGRAM. This might be done from the Makefile. If PAGER_PROGRAM is undefined and the PAGER environment variable is not set, none will be used. */ /* Define the separator lines when output is inhibited. */ #define SEPARATOR_LINE \ "======================================================================" /* Library declarations. */ #if STDC_HEADERS # include <stdlib.h> #endif #include <ctype.h> #include <stdio.h> #if STDC_HEADERS # include <string.h> #else # if HAVE_STRING_H # include <string.h> # else # include <strings.h> # define strrchr rindex # endif #endif char *strstr (); #if HAVE_TPUTS # if HAVE_TERMCAP_H # include <termcap.h> # else const char *tgetstr (); # endif #endif #include <sys/types.h> #include <setjmp.h> #include <signal.h> #ifndef RETSIGTYPE # define RETSIGTYPE void #endif #include <sys/stat.h> #if HAVE_UNISTD_H # include <unistd.h> #endif #include <errno.h> #ifndef errno extern int errno; #endif #include "getopt.h" #ifdef PROTOTYPES # define _(Args) Args #else # define _(Args) () #endif char *getenv (); FILE *readpipe _((const char *, ...)); FILE *writepipe _((const char *, ...)); char *tmpnam (); void error ();  /* Declarations. */ /* Option variables. */ struct option const longopts[] = { {"copyright" , 0, NULL, 'C'}, {"version" , 0, NULL, 'V'}, {"no-deleted" , 0, NULL, '1'}, {"no-inserted" , 0, NULL, '2'}, {"no-common" , 0, NULL, '3'}, {"help" , 0, NULL, 'h'}, {"ignore-case" , 0, NULL, 'i'}, {"printer" , 0, NULL, 'p'}, {"statistics" , 0, NULL, 's'}, {"terminal" , 0, NULL, 't'}, {"start-delete", 1, NULL, 'w'}, {"end-delete" , 1, NULL, 'x'}, {"start-insert", 1, NULL, 'y'}, {"end-insert" , 1, NULL, 'z'}, {NULL , 0, NULL, 0} }; static char const copyright[] = "Copyright (C) 1992 Free Software Foundation, Inc."; const char *program_name; /* name of executing program */ int inhibit_left; /* inhibit display of left side words */ int inhibit_right; /* inhibit display of left side words */ int inhibit_common; /* inhibit display of common words */ int ignore_case; /* ignore case in comparisons */ int show_statistics; /* if printing summary statistics */ int no_wrapping; /* end/restart strings at end of lines */ int autopager; /* if calling the pager automatically */ int overstrike; /* if using printer overstrikes */ int overstrike_for_less; /* if output aimed to the "less" program */ const char *user_delete_start; /* user specified string for start of delete */ const char *user_delete_end; /* user specified string for end of delete */ const char *user_insert_start; /* user specified string for start of insert */ const char *user_insert_end; /* user specified string for end of insert */ int find_termcap; /* initialize the termcap strings */ const char *term_delete_start; /* termcap string for start of delete */ const char *term_delete_end; /* termcap string for end of delete */ const char *term_insert_start; /* termcap string for start of insert */ const char *term_insert_end; /* termcap string for end of insert */ /* Other variables. */ enum copy_mode { COPY_NORMAL, /* copy text unemphasized */ COPY_DELETED, /* copy text underlined */ COPY_INSERTED /* copy text bolded */ } copy_mode; jmp_buf signal_label; /* where to jump when signal received */ int interrupted; /* set when some signal has been received */ /* Guarantee some value for L_tmpnam. */ #ifndef L_tmpnam # include "pathmax.h" # define L_tmpnam PATH_MAX #endif typedef struct side SIDE; /* all variables for one side */ struct side { const char *filename; /* original input file name */ FILE *file; /* original input file */ int position; /* number of words read so far */ int character; /* one character look ahead */ char temp_name[L_tmpnam]; /* temporary file name */ FILE *temp_file; /* temporary file */ }; SIDE side_array[2]; /* area for holding side descriptions */ SIDE *left_side = &side_array[0]; SIDE *right_side = &side_array[1]; FILE *input_file; /* stream being produced by diff */ int character; /* for reading input_file */ char directive; /* diff directive character */ int argument[4]; /* four diff directive arguments */ FILE *output_file; /* file to which we write output */ const char *termcap_init_string; /* how to initialize the termcap mode */ const char *termcap_end_string; /* how to complete the termcap mode */ int count_total_left; /* count of total words in left file */ int count_total_right; /* count of total words in right file */ int count_isolated_left; /* count of deleted words in left file */ int count_isolated_right; /* count of added words in right file */ int count_changed_left; /* count of changed words in left file */ int count_changed_right; /* count of changed words in right file */  /* Signal processing. */ /*-----------------. | Signal handler. | `-----------------*/ static RETSIGTYPE signal_handler (int number) { interrupted = 1; signal (number, signal_handler); } /*----------------------------. | Prepare to handle signals. | `----------------------------*/ static void setup_signals (void) { interrupted = 0; /* Intercept willingful requests for stopping. */ signal (SIGINT, signal_handler); signal (SIGPIPE, signal_handler); signal (SIGTERM, signal_handler); }  /* Terminal initialization. */ static void initialize_strings (void) { #if HAVE_TPUTS if (find_termcap) { const char *name; /* terminal capability name */ char term_buffer[2048]; /* terminal description */ static char *buffer; /* buffer for capabilities */ char *filler; /* cursor into allocated strings */ int success; /* tgetent results */ name = getenv ("TERM"); if (name == NULL) error (1, 0, "Specify a terminal type with `setenv TERM <yourtype>'."); success = tgetent (term_buffer, name); if (success < 0) error (1, 0, "Could not access the termcap data base."); if (success == 0) error (1, 0, "Terminal type `%s' is not defined.", name); buffer = (char *) malloc (strlen (term_buffer)); filler = buffer; termcap_init_string = tgetstr ("ti", &filler); termcap_end_string = tgetstr ("te", &filler); term_delete_start = tgetstr ("us", &filler); term_delete_end = tgetstr ("ue", &filler); term_insert_start = tgetstr ("so", &filler); term_insert_end = tgetstr ("se", &filler); } #endif /* HAVE_TPUTS */ /* Ensure some default strings. */ if (!overstrike) { if (!term_delete_start && !user_delete_start) user_delete_start = "[-"; if (!term_delete_en