#include "cache.h"
#include "commit.h"
+#include "epoch.h"
-int main(int argc, char **argv)
+#define SEEN (1u << 0)
+#define INTERESTING (1u << 1)
+
+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\n"
+ " --merge-order [ --show-breaks ]";
+
+static int verbose_header = 0;
+static int show_parents = 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 enum cmit_fmt commit_format = CMIT_FMT_RAW;
+static int merge_order = 0;
+static int show_breaks = 0;
+
+static void show_commit(struct commit *commit)
{
- unsigned char sha1[20];
- struct commit_list *list = NULL;
- struct commit *commit;
+ if (show_breaks) {
+ prefix = "| ";
+ if (commit->object.flags & DISCONTINUITY) {
+ prefix = "^ ";
+ } else if (commit->object.flags & BOUNDARY) {
+ prefix = "= ";
+ }
+ }
+ 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) {
+ static char pretty_header[16384];
+ pretty_print_commit(commit_format, commit->buffer, ~0, pretty_header, sizeof(pretty_header));
+ printf("%s%c", pretty_header, hdr_termination);
+ }
+}
+
+static int filter_commit(struct commit * commit)
+{
+ if (commit->object.flags & UNINTERESTING)
+ return CONTINUE;
+ if (min_age != -1 && (commit->date > min_age))
+ return CONTINUE;
+ if (max_age != -1 && (commit->date < max_age))
+ return STOP;
+ if (max_count != -1 && !max_count--)
+ return STOP;
+
+ return DO;
+}
+
+static int process_commit(struct commit * commit)
+{
+ int action=filter_commit(commit);
+
+ if (action == STOP) {
+ return STOP;
+ }
+
+ if (action == CONTINUE) {
+ return CONTINUE;
+ }
+
+ show_commit(commit);
+
+ return CONTINUE;
+}
+
+static void show_commit_list(struct commit_list *list)
+{
+ while (list) {
+ struct commit *commit = pop_most_recent_commit(&list, SEEN);
+
+ if (process_commit(commit) == STOP)
+ break;
+ }
+}
- if (argc != 2 || get_sha1(argv[1], sha1))
- usage("rev-list <commit-id>");
+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;
+ }
+}
- commit = lookup_commit(sha1);
- if (!commit || parse_commit(commit) < 0)
- die("bad commit object");
+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;
+}
- commit_list_insert(commit, &list);
+struct commit_list *limit_list(struct commit_list *list)
+{
+ struct commit_list *newlist = NULL;
+ struct commit_list **p = &newlist;
do {
- struct commit *commit = pop_most_recent_commit(&list, 0x1);
- printf("%s\n", sha1_to_hex(commit->object.sha1));
+ struct commit *commit = pop_most_recent_commit(&list, SEEN);
+ struct object *obj = &commit->object;
+
+ if (obj->flags & UNINTERESTING) {
+ mark_parents_uninteresting(commit);
+ if (everybody_uninteresting(list))
+ break;
+ continue;
+ }
+ p = &commit_list_insert(commit, p)->next;
} while (list);
+ return newlist;
+}
+
+static enum cmit_fmt get_commit_format(const char *arg)
+{
+ if (!*arg)
+ return CMIT_FMT_DEFAULT;
+ if (!strcmp(arg, "=raw"))
+ return CMIT_FMT_RAW;
+ if (!strcmp(arg, "=medium"))
+ return CMIT_FMT_MEDIUM;
+ if (!strcmp(arg, "=short"))
+ return CMIT_FMT_SHORT;
+ usage(rev_list_usage);
+}
+
+
+int main(int argc, char **argv)
+{
+ struct commit_list *list = NULL;
+ int i, limited = 0;
+
+ for (i = 1 ; i < argc; i++) {
+ int flags;
+ char *arg = argv[i];
+ unsigned char sha1[20];
+ struct commit *commit;
+
+ 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 (!strncmp(arg, "--pretty", 8)) {
+ commit_format = get_commit_format(arg+8);
+ verbose_header = 1;
+ hdr_termination = '\n';
+ prefix = "commit ";
+ continue;
+ }
+ if (!strcmp(arg, "--parents")) {
+ show_parents = 1;
+ continue;
+ }
+ if (!strncmp(arg, "--merge-order", 13)) {
+ merge_order = 1;
+ continue;
+ }
+ if (!strncmp(arg, "--show-breaks", 13)) {
+ show_breaks = 1;
+ continue;
+ }
+
+ flags = 0;
+ if (*arg == '^') {
+ flags = UNINTERESTING;
+ arg++;
+ limited = 1;
+ }
+ if (get_sha1(arg, sha1) || (show_breaks && !merge_order))
+ usage(rev_list_usage);
+ commit = lookup_commit_reference(sha1);
+ if (!commit || parse_commit(commit) < 0)
+ die("bad commit object %s", arg);
+ commit->object.flags |= flags;
+ commit_list_insert(commit, &list);
+ }
+
+ if (!list)
+ usage(rev_list_usage);
+
+ if (!merge_order) {
+
+ if (limited)
+ list = limit_list(list);
+ show_commit_list(list);
+
+ } else {
+
+ if (sort_list_in_merge_order(list, &process_commit)) {
+ die("merge order sort failed\n");
+ }
+
+ }
+
return 0;
}