#include "cache.h"
#include "commit.h"
+#define SEEN (1u << 0)
+#define INTERESTING (1u << 1)
+#define UNINTERESTING (1u << 2)
+
+static const char rev_list_usage[] =
+ "usage: git-rev-list [OPTION] commit-id <commit-id>\n"
+ " --max-count=nr\n"
+ " --max-age=epoch\n"
+ " --min-age=epoch\n"
+ " --header\n"
+ " --pretty";
+
+static int verbose_header = 0;
+static int show_parents = 0;
+static int pretty_print = 0;
+static int hdr_termination = 0;
+static const char *prefix = "";
+static unsigned long max_age = -1;
+static unsigned long min_age = -1;
+static int max_count = -1;
+
+static void show_commit(struct commit *commit)
+{
+ printf("%s%s", prefix, sha1_to_hex(commit->object.sha1));
+ if (show_parents) {
+ struct commit_list *parents = commit->parents;
+ while (parents) {
+ printf(" %s", sha1_to_hex(parents->item->object.sha1));
+ parents = parents->next;
+ }
+ }
+ putchar('\n');
+ if (verbose_header) {
+ const char *buf = commit->buffer;
+ if (pretty_print) {
+ static char pretty_header[16384];
+ pretty_print_commit(commit->buffer, ~0, pretty_header, sizeof(pretty_header));
+ buf = pretty_header;
+ }
+ printf("%s%c", buf, hdr_termination);
+ }
+}
+
+static void show_commit_list(struct commit_list *list)
+{
+ while (list) {
+ struct commit *commit = pop_most_recent_commit(&list, SEEN);
+
+ if (commit->object.flags & UNINTERESTING)
+ continue;
+ if (min_age != -1 && (commit->date > min_age))
+ continue;
+ if (max_age != -1 && (commit->date < max_age))
+ break;
+ if (max_count != -1 && !max_count--)
+ break;
+ show_commit(commit);
+ }
+}
+
+static void mark_parents_uninteresting(struct commit *commit)
+{
+ struct commit_list *parents = commit->parents;
+
+ while (parents) {
+ struct commit *commit = parents->item;
+ commit->object.flags |= UNINTERESTING;
+ parents = parents->next;
+ }
+}
+
+static int everybody_uninteresting(struct commit_list *list)
+{
+ while (list) {
+ struct commit *commit = list->item;
+ list = list->next;
+ if (commit->object.flags & UNINTERESTING)
+ continue;
+ return 0;
+ }
+ return 1;
+}
+
+struct commit_list *limit_list(struct commit_list *list, struct commit *end)
+{
+ struct commit_list *newlist = NULL;
+ struct commit_list **p = &newlist;
+ do {
+ struct commit *commit = pop_most_recent_commit(&list, SEEN);
+ struct object *obj = &commit->object;
+
+ if (commit == end || (obj->flags & UNINTERESTING)) {
+ mark_parents_uninteresting(commit);
+ if (everybody_uninteresting(list))
+ break;
+ continue;
+ }
+ p = &commit_list_insert(commit, p)->next;
+ } while (list);
+ return newlist;
+}
+
int main(int argc, char **argv)
{
- unsigned char sha1[20];
+ int nr_sha;
+ unsigned char sha1[2][20];
struct commit_list *list = NULL;
- struct commit *commit;
+ struct commit *commit, *end;
+ int i;
- if (argc != 2 || get_sha1_hex(argv[1], sha1))
- usage("rev-list <commit-id>");
+ nr_sha = 0;
+ for (i = 1 ; i < argc; i++) {
+ char *arg = argv[i];
- commit = lookup_commit(sha1);
+ if (!strncmp(arg, "--max-count=", 12)) {
+ max_count = atoi(arg + 12);
+ continue;
+ }
+ if (!strncmp(arg, "--max-age=", 10)) {
+ max_age = atoi(arg + 10);
+ continue;
+ }
+ if (!strncmp(arg, "--min-age=", 10)) {
+ min_age = atoi(arg + 10);
+ continue;
+ }
+ if (!strcmp(arg, "--header")) {
+ verbose_header = 1;
+ continue;
+ }
+ if (!strcmp(arg, "--pretty")) {
+ verbose_header = 1;
+ pretty_print = 1;
+ hdr_termination = '\n';
+ prefix = "commit ";
+ continue;
+ }
+ if (!strcmp(arg, "--parents")) {
+ show_parents = 1;
+ continue;
+ }
+
+ if (nr_sha > 2 || get_sha1(arg, sha1[nr_sha]))
+ usage(rev_list_usage);
+ nr_sha++;
+ }
+
+ if (!nr_sha)
+ usage(rev_list_usage);
+
+ commit = lookup_commit_reference(sha1[0]);
if (!commit || parse_commit(commit) < 0)
- die("bad commit object");
+ die("bad starting commit object");
+
+ end = NULL;
+ if (nr_sha > 1) {
+ end = lookup_commit_reference(sha1[1]);
+ if (!end || parse_commit(end) < 0)
+ die("bad ending commit object");
+ }
commit_list_insert(commit, &list);
- do {
- struct commit *commit = pop_most_recent_commit(&list);
- printf("%s\n", sha1_to_hex(commit->object.sha1));
- } while (list);
+ if (end)
+ list = limit_list(list, end);
+
+ show_commit_list(list);
return 0;
}