Andrew's git - gitweb.git/blob - builtin-diff-index.c

   1#include "cache.h"
   2#include "diff.h"
   3#include "commit.h"
   4#include "revision.h"
   5#include "builtin.h"
   6
   7static const char diff_cache_usage[] =
   8"git-diff-index [-m] [--cached] "
   9"[<common diff options>] <tree-ish> [<path>...]"
  10COMMON_DIFF_OPTIONS_HELP;
  11
  12int cmd_diff_index(int argc, const char **argv, const char *prefix)
  13{
  14        struct rev_info rev;
  15        int cached = 0;
  16        int i;
  17
  18        init_revisions(&rev, prefix);
  19        git_config(git_default_config); /* no "diff" UI options */
  20        rev.abbrev = 0;
  21
  22        argc = setup_revisions(argc, argv, &rev, NULL);
  23        for (i = 1; i < argc; i++) {
  24                const char *arg = argv[i];
  25                        
  26                if (!strcmp(arg, "--cached"))
  27                        cached = 1;
  28                else
  29                        usage(diff_cache_usage);
  30        }
  31        if (!rev.diffopt.output_format)
  32                rev.diffopt.output_format = DIFF_FORMAT_RAW;
  33
  34        /*
  35         * Make sure there is one revision (i.e. pending object),
  36         * and there is no revision filtering parameters.
  37         */
  38        if (rev.pending.nr != 1 ||
  39            rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1)
  40                usage(diff_cache_usage);
  41        return run_diff_index(&rev, cached);
  42}