build-rev-cache.c

   1 #include "refs.h"
   2 #include "cache.h"
   3 #include "commit.h"
   4 #include "rev-cache.h"
   5
   6 static void process_head_list(int verbose)
   7 {
   8         char buf[512];
   9
  10         while (fgets(buf, sizeof(buf), stdin)) {
  11                 unsigned char sha1[20];
  12                 struct commit *commit;
  13
  14                 if (get_sha1_hex(buf, sha1)) {
  15                         error("ignoring: %s", buf);
  16                         continue;
  17                 }
  18                 if (!(commit = lookup_commit_reference(sha1))) {
  19                         error("not a commit: %s", sha1_to_hex(sha1));
  20                         continue;
  21                 }
  22                 record_rev_cache(commit->object.sha1, verbose ? stderr : NULL);
  23         }
  24 }
  25
  26
  27 static const char *build_rev_cache_usage =
  28 "git-build-rev-cache <rev-cache-file> < list-of-heads";
  29
  30 int main(int ac, char **av)
  31 {
  32         int verbose = 0;
  33         const char *path;
  34
  35         while (1 < ac && av[1][0] == '-') {
  36                 if (!strcmp(av[1], "-v"))
  37                         verbose = 1;
  38                 else
  39                         usage(build_rev_cache_usage);
  40                 ac--; av++;
  41         }
  42
  43         if (ac != 2)
  44                 usage(build_rev_cache_usage);
  45
  46         path = av[1];
  47
  48         /* read existing rev-cache */
  49         read_rev_cache(path, NULL, 0);
  50
  51         process_head_list(verbose);
  52
  53         /* update the rev-cache database by appending newly found one to it */
  54         write_rev_cache(path, path);
  55         return 0;
  56 }