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, show_parents = 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                if (!strcmp(arg, "--parents")) {
  70                        show_parents = 1;
  71                        continue;
  72                }
  73
  74                if (nr_sha > 2 || get_sha1(arg, sha1[nr_sha]))
  75                        usage(rev_list_usage);
  76                nr_sha++;
  77        }
  78
  79        if (!nr_sha)
  80                usage(rev_list_usage);
  81
  82        commit = lookup_commit_reference(sha1[0]);
  83        if (!commit || parse_commit(commit) < 0)
  84                die("bad starting commit object");
  85
  86        end = NULL;
  87        if (nr_sha > 1) {
  88                end = lookup_commit_reference(sha1[1]);
  89                if (!end || parse_commit(end) < 0)
  90                        die("bad ending commit object");
  91        }
  92
  93        commit_list_insert(commit, &list);
  94        if (end) {
  95                struct commit_list *newlist = NULL;
  96                struct commit_list **p = &newlist;
  97                do {
  98                        struct commit *commit = pop_most_recent_commit(&list, SEEN);
  99                        struct object *obj = &commit->object;
 100
 101                        if (commit == end || (obj->flags & UNINTERESTING)) {
 102                                mark_parents_uninteresting(commit);
 103                                if (everybody_uninteresting(list))
 104                                        break;
 105                                continue;
 106                        }
 107                        p = &commit_list_insert(commit, p)->next;
 108                } while (list);
 109                list = newlist;
 110        }
 111
 112        while (list) {
 113                struct commit *commit = pop_most_recent_commit(&list, SEEN);
 114
 115                if (commit->object.flags & UNINTERESTING)
 116                        continue;
 117                if (min_age != -1 && (commit->date > min_age))
 118                        continue;
 119                if (max_age != -1 && (commit->date < max_age))
 120                        break;
 121                if (max_count != -1 && !max_count--)
 122                        break;
 123                printf("%s", sha1_to_hex(commit->object.sha1));
 124                if (show_parents) {
 125                        struct commit_list *parents = commit->parents;
 126                        while (parents) {
 127                                printf(" %s", sha1_to_hex(parents->item->object.sha1));
 128                                parents = parents->next;
 129                        }
 130                }
 131                putchar('\n');
 132                if (verbose_header)
 133                        printf("%s%c", commit->buffer, 0);
 134        }
 135        return 0;
 136}