diff-files.c

   1 /*
   2  * GIT - The information manager from hell
   3  *
   4  * Copyright (C) Linus Torvalds, 2005
   5  */
   6 #include "cache.h"
   7 #include "diff.h"
   8 #include "commit.h"
   9 #include "revision.h"
  10
  11 static const char diff_files_usage[] =
  12 "git-diff-files [-q] [-0/-1/2/3 |-c|--cc] [<common diff options>] [<path>...]"
  13 COMMON_DIFF_OPTIONS_HELP;
  14
  15 int main(int argc, const char **argv)
  16 {
  17         struct rev_info rev;
  18         int silent = 0;
  19
  20         git_config(git_diff_config);
  21         init_revisions(&rev);
  22         rev.abbrev = 0;
  23
  24         argc = setup_revisions(argc, argv, &rev, NULL);
  25         while (1 < argc && argv[1][0] == '-') {
  26                 if (!strcmp(argv[1], "--base"))
  27                         rev.max_count = 1;
  28                 else if (!strcmp(argv[1], "--ours"))
  29                         rev.max_count = 2;
  30                 else if (!strcmp(argv[1], "--theirs"))
  31                         rev.max_count = 3;
  32                 else if (!strcmp(argv[1], "-q"))
  33                         silent = 1;
  34                 else
  35                         usage(diff_files_usage);
  36                 argv++; argc--;
  37         }
  38         /*
  39          * Make sure there are NO revision (i.e. pending object) parameter,
  40          * rev.max_count is reasonable (0 <= n <= 3),
  41          * there is no other revision filtering parameters.
  42          */
  43         if (rev.pending_objects ||
  44             rev.min_age != -1 || rev.max_age != -1)
  45                 usage(diff_files_usage);
  46         /*
  47          * Backward compatibility wart - "diff-files -s" used to
  48          * defeat the common diff option "-s" which asked for
  49          * DIFF_FORMAT_NO_OUTPUT.
  50          */
  51         if (rev.diffopt.output_format == DIFF_FORMAT_NO_OUTPUT)
  52                 rev.diffopt.output_format = DIFF_FORMAT_RAW;
  53         return run_diff_files(&rev, silent);
  54 }