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#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)
{
int nr_sha;
unsigned char sha1[2][20];
struct commit_list *list = NULL;
struct commit *commit, *end;
int i;
nr_sha = 0;
for (i = 1 ; i < argc; i++) {
char *arg = argv[i];
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 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);
if (end)
list = limit_list(list, end);
show_commit_list(list);
return 0;
}
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