Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "commit.h"
   3
   4#define SEEN            (1u << 0)
   5#define INTERESTING     (1u << 1)
   6#define UNINTERESTING   (1u << 2)
   7
   8static const char rev_list_usage[] =
   9        "usage: git-rev-list [OPTION] commit-id <commit-id>\n"
  10                      "  --max-count=nr\n"
  11                      "  --max-age=epoch\n"
  12                      "  --min-age=epoch\n"
  13                      "  --header";
  14
  15static void mark_parents_uninteresting(struct commit *commit)
  16{
  17        struct commit_list *parents = commit->parents;
  18
  19        while (parents) {
  20                struct commit *commit = parents->item;
  21                commit->object.flags |= UNINTERESTING;
  22                parents = parents->next;
  23        }
  24}
  25
  26static int everybody_uninteresting(struct commit_list *list)
  27{
  28        while (list) {
  29                struct commit *commit = list->item;
  30                list = list->next;
  31                if (commit->object.flags & UNINTERESTING)
  32                        continue;
  33                return 0;
  34        }
  35        return 1;
  36}
  37
  38int main(int argc, char **argv)
  39{
  40        int nr_sha;
  41        unsigned char sha1[2][20];
  42        struct commit_list *list = NULL;
  43        struct commit *commit, *end;
  44        int i, verbose_header = 0;
  45        unsigned long max_age = -1;
  46        unsigned long min_age = -1;
  47        int max_count = -1;
  48
  49        nr_sha = 0;
  50        for (i = 1 ; i < argc; i++) {
  51                char *arg = argv[i];
  52
  53                if (!strncmp(arg, "--max-count=", 12)) {
  54                        max_count = atoi(arg + 12);
  55                        continue;
  56                }
  57                if (!strncmp(arg, "--max-age=", 10)) {
  58                        max_age = atoi(arg + 10);
  59                        continue;
  60                }
  61                if (!strncmp(arg, "--min-age=", 10)) {
  62                        min_age = atoi(arg + 10);
  63                        continue;
  64                }
  65                if (!strcmp(arg, "--header")) {
  66                        verbose_header = 1;
  67                        continue;
  68                }
  69
  70                if (nr_sha > 2 || get_sha1(arg, sha1[nr_sha]))
  71                        usage(rev_list_usage);
  72                nr_sha++;
  73        }
  74
  75        if (!nr_sha)
  76                usage(rev_list_usage);
  77
  78        commit = lookup_commit_reference(sha1[0]);
  79        if (!commit || parse_commit(commit) < 0)
  80                die("bad starting commit object");
  81
  82        end = NULL;
  83        if (nr_sha > 1) {
  84                end = lookup_commit_reference(sha1[1]);
  85                if (!end || parse_commit(end) < 0)
  86                        die("bad ending commit object");
  87        }
  88
  89        commit_list_insert(commit, &list);
  90        if (end) {
  91                struct commit_list *newlist = NULL;
  92                struct commit_list **p = &newlist;
  93                do {
  94                        struct commit *commit = pop_most_recent_commit(&list, SEEN);
  95                        struct object *obj = &commit->object;
  96
  97                        if (commit == end || (obj->flags & UNINTERESTING)) {
  98                                mark_parents_uninteresting(commit);
  99                                if (everybody_uninteresting(list))
 100                                        break;
 101                                continue;
 102                        }
 103                        p = &commit_list_insert(commit, p)->next;
 104                } while (list);
 105                list = newlist;
 106        }
 107
 108        while (list) {
 109                struct commit *commit = pop_most_recent_commit(&list, SEEN);
 110
 111                if (commit->object.flags & UNINTERESTING)
 112                        continue;
 113                if (min_age != -1 && (commit->date > min_age))
 114                        continue;
 115                if (max_age != -1 && (commit->date < max_age))
 116                        break;
 117                if (max_count != -1 && !max_count--)
 118                        break;
 119                printf("%s\n", sha1_to_hex(commit->object.sha1));
 120                if (verbose_header)
 121                        printf("%s%c", commit->buffer, 0);
 122        }
 123        return 0;
 124}