Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "commit.h"
   3
   4/*
   5 * Show one commit
   6 */
   7void show_commit(struct commit *commit)
   8{
   9        char cmdline[400];
  10        char hex[100];
  11
  12        strcpy(hex, sha1_to_hex(commit->object.sha1));
  13        printf("Id: %s\n", hex);
  14        fflush(NULL);
  15        sprintf(cmdline, "cat-file commit %s", hex);
  16        system(cmdline);
  17        if (commit->parents) {
  18                char *against = sha1_to_hex(commit->parents->item->object.sha1);
  19                printf("\n\n======== diff against %s ========\n", against);
  20                fflush(NULL);
  21                sprintf(cmdline, "diff-tree -p %s %s", against, hex);
  22                system(cmdline);
  23        }
  24        printf("======== end ========\n\n");
  25}
  26
  27/*
  28 * Show all unseen commits, depth-first
  29 */
  30void show_unseen(struct commit *top)
  31{
  32        struct commit_list *parents;
  33
  34        if (top->object.flags & 2)
  35                return;
  36        top->object.flags |= 2;
  37        parents = top->parents;
  38        while (parents) {
  39                show_unseen(parents->item);
  40                parents = parents->next;
  41        }
  42        show_commit(top);
  43}
  44
  45void export(struct commit *top, struct commit *base)
  46{
  47        mark_reachable(&top->object, 1);
  48        if (base)
  49                mark_reachable(&base->object, 2);
  50        show_unseen(top);
  51}
  52
  53struct commit *get_commit(unsigned char *sha1)
  54{
  55        struct commit *commit = lookup_commit(sha1);
  56        if (!commit->object.parsed) {
  57                struct commit_list *parents;
  58
  59                if (parse_commit(commit) < 0)
  60                        die("unable to parse commit %s", sha1_to_hex(sha1));
  61                parents = commit->parents;
  62                while (parents) {
  63                        get_commit(parents->item->object.sha1);
  64                        parents = parents->next;
  65                }
  66        }
  67        return commit;
  68}
  69
  70int main(int argc, char **argv)
  71{
  72        unsigned char base_sha1[20];
  73        unsigned char top_sha1[20];
  74
  75        if (argc < 2 || argc > 4 ||
  76            get_sha1_hex(argv[1], top_sha1) ||
  77            (argc == 3 && get_sha1_hex(argv[2], base_sha1)))
  78                usage("git-export top [base]");
  79        export(get_commit(top_sha1), argc==3 ? get_commit(base_sha1) : NULL);
  80        return 0;
  81}