2005-06-30 06:09:05 +04:00
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#include "cache.h"
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2005-07-19 15:03:47 +04:00
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#include "commit.h"
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2005-08-05 11:47:56 +04:00
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#include "tag.h"
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2005-07-09 00:58:40 +04:00
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#include "refs.h"
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2005-06-30 07:50:15 +04:00
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#include "pkt-line.h"
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2006-01-11 05:12:17 +03:00
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#include "exec_cmd.h"
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2005-06-30 06:09:05 +04:00
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2005-07-14 11:10:05 +04:00
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static const char send_pack_usage[] =
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2005-08-02 23:20:27 +04:00
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"git-send-pack [--all] [--exec=git-receive-pack] <remote> [<head>...]\n"
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" --all and explicit <head> specification are mutually exclusive.";
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2005-06-30 06:09:05 +04:00
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static const char *exec = "git-receive-pack";
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2005-12-21 05:13:02 +03:00
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static int verbose = 0;
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2005-07-17 00:26:33 +04:00
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static int send_all = 0;
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2005-07-19 15:03:47 +04:00
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static int force_update = 0;
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2006-02-20 02:03:49 +03:00
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static int use_thin_pack = 0;
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2005-06-30 06:09:05 +04:00
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2005-07-09 00:58:40 +04:00
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static int is_zero_sha1(const unsigned char *sha1)
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{
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int i;
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for (i = 0; i < 20; i++) {
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if (*sha1++)
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return 0;
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}
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return 1;
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}
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2005-06-30 21:17:39 +04:00
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static void exec_pack_objects(void)
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{
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2006-03-05 13:47:29 +03:00
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static const char *args[] = {
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2006-01-11 05:12:17 +03:00
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"pack-objects",
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2005-06-30 21:17:39 +04:00
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"--stdout",
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NULL
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};
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2006-01-11 05:12:17 +03:00
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execv_git_cmd(args);
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2005-06-30 21:17:39 +04:00
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die("git-pack-objects exec failed (%s)", strerror(errno));
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}
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static void exec_rev_list(struct ref *refs)
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{
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2006-02-22 05:59:37 +03:00
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struct ref *ref;
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2006-03-05 13:47:29 +03:00
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static const char *args[1000];
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2006-02-22 05:59:37 +03:00
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int i = 0, j;
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2005-06-30 21:17:39 +04:00
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2006-01-11 05:12:17 +03:00
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args[i++] = "rev-list"; /* 0 */
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2006-02-20 02:03:49 +03:00
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if (use_thin_pack) /* 1 */
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args[i++] = "--objects-edge";
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else
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args[i++] = "--objects";
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2006-02-22 05:59:37 +03:00
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/* First send the ones we care about most */
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for (ref = refs; ref; ref = ref->next) {
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if (900 < i)
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2005-06-30 21:17:39 +04:00
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die("git-rev-list environment overflow");
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2006-02-22 05:59:37 +03:00
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if (!is_zero_sha1(ref->new_sha1)) {
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char *buf = malloc(100);
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2005-07-09 00:58:40 +04:00
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args[i++] = buf;
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2006-02-22 05:59:37 +03:00
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snprintf(buf, 50, "%s", sha1_to_hex(ref->new_sha1));
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2005-07-09 00:58:40 +04:00
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buf += 50;
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2006-02-22 05:59:37 +03:00
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if (!is_zero_sha1(ref->old_sha1) &&
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has_sha1_file(ref->old_sha1)) {
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args[i++] = buf;
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snprintf(buf, 50, "^%s",
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sha1_to_hex(ref->old_sha1));
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}
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2005-07-09 00:58:40 +04:00
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}
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2006-02-22 05:59:37 +03:00
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}
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/* Then a handful of the remainder
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* NEEDSWORK: we would be better off if used the newer ones first.
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*/
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for (ref = refs, j = i + 16;
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i < 900 && i < j && ref;
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ref = ref->next) {
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if (is_zero_sha1(ref->new_sha1) &&
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!is_zero_sha1(ref->old_sha1) &&
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has_sha1_file(ref->old_sha1)) {
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char *buf = malloc(42);
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2005-07-09 00:58:40 +04:00
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args[i++] = buf;
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2006-02-22 05:59:37 +03:00
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snprintf(buf, 42, "^%s", sha1_to_hex(ref->old_sha1));
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2005-07-09 00:58:40 +04:00
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}
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2005-06-30 21:17:39 +04:00
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}
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args[i] = NULL;
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2006-01-11 05:12:17 +03:00
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execv_git_cmd(args);
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2005-06-30 21:17:39 +04:00
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die("git-rev-list exec failed (%s)", strerror(errno));
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}
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static void rev_list(int fd, struct ref *refs)
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{
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int pipe_fd[2];
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pid_t pack_objects_pid;
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if (pipe(pipe_fd) < 0)
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die("rev-list setup: pipe failed");
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pack_objects_pid = fork();
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if (!pack_objects_pid) {
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dup2(pipe_fd[0], 0);
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dup2(fd, 1);
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close(pipe_fd[0]);
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close(pipe_fd[1]);
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close(fd);
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exec_pack_objects();
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die("pack-objects setup failed");
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}
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if (pack_objects_pid < 0)
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die("pack-objects fork failed");
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dup2(pipe_fd[1], 1);
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close(pipe_fd[0]);
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close(pipe_fd[1]);
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close(fd);
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exec_rev_list(refs);
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}
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2006-08-15 00:38:50 +04:00
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static void pack_objects(int fd, struct ref *refs)
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2005-06-30 21:17:39 +04:00
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{
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pid_t rev_list_pid;
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rev_list_pid = fork();
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if (!rev_list_pid) {
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rev_list(fd, refs);
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die("rev-list setup failed");
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}
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if (rev_list_pid < 0)
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die("rev-list fork failed");
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/*
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* We don't wait for the rev-list pipeline in the parent:
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* we end up waiting for the other end instead
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*/
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}
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2005-06-30 09:31:41 +04:00
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2005-08-06 10:05:33 +04:00
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static void unmark_and_free(struct commit_list *list, unsigned int mark)
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{
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while (list) {
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struct commit_list *temp = list;
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temp->item->object.flags &= ~mark;
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list = temp->next;
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free(temp);
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}
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}
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2005-08-05 11:47:56 +04:00
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static int ref_newer(const unsigned char *new_sha1,
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const unsigned char *old_sha1)
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2005-07-09 00:58:40 +04:00
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{
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2005-08-05 11:47:56 +04:00
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struct object *o;
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struct commit *old, *new;
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2005-08-06 10:05:33 +04:00
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struct commit_list *list, *used;
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int found = 0;
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2005-07-19 15:03:47 +04:00
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2005-08-05 11:47:56 +04:00
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/* Both new and old must be commit-ish and new is descendant of
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* old. Otherwise we require --force.
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*/
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2005-11-03 02:19:13 +03:00
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o = deref_tag(parse_object(old_sha1), NULL, 0);
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2006-07-12 07:45:31 +04:00
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if (!o || o->type != OBJ_COMMIT)
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2005-07-09 00:58:40 +04:00
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return 0;
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2005-08-05 11:47:56 +04:00
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old = (struct commit *) o;
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2005-11-03 02:19:13 +03:00
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o = deref_tag(parse_object(new_sha1), NULL, 0);
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2006-07-12 07:45:31 +04:00
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if (!o || o->type != OBJ_COMMIT)
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2005-07-19 15:03:47 +04:00
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return 0;
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2005-08-05 11:47:56 +04:00
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new = (struct commit *) o;
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2005-07-19 15:03:47 +04:00
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if (parse_commit(new) < 0)
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return 0;
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2005-08-06 10:05:33 +04:00
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used = list = NULL;
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2005-07-19 15:03:47 +04:00
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commit_list_insert(new, &list);
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2005-07-27 07:04:22 +04:00
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while (list) {
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new = pop_most_recent_commit(&list, 1);
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2005-08-06 10:05:33 +04:00
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commit_list_insert(new, &used);
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if (new == old) {
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found = 1;
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break;
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}
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2005-07-19 15:03:47 +04:00
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}
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2005-08-06 10:05:33 +04:00
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unmark_and_free(list, 1);
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unmark_and_free(used, 1);
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return found;
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2005-07-09 00:58:40 +04:00
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}
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2005-08-04 03:35:29 +04:00
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static struct ref *local_refs, **local_tail;
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static struct ref *remote_refs, **remote_tail;
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2005-07-09 00:58:40 +04:00
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2005-08-04 03:35:29 +04:00
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static int one_local_ref(const char *refname, const unsigned char *sha1)
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2005-07-09 00:58:40 +04:00
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{
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struct ref *ref;
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2005-08-04 03:35:29 +04:00
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int len = strlen(refname) + 1;
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ref = xcalloc(1, sizeof(*ref) + len);
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2005-07-09 00:58:40 +04:00
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memcpy(ref->new_sha1, sha1, 20);
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memcpy(ref->name, refname, len);
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2005-08-04 03:35:29 +04:00
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*local_tail = ref;
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local_tail = &ref->next;
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2005-07-09 00:58:40 +04:00
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return 0;
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}
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2005-08-04 03:35:29 +04:00
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static void get_local_heads(void)
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{
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local_tail = &local_refs;
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for_each_ref(one_local_ref);
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}
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2005-12-26 10:18:37 +03:00
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static int receive_status(int in)
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{
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char line[1000];
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int ret = 0;
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int len = packet_read_line(in, line, sizeof(line));
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if (len < 10 || memcmp(line, "unpack ", 7)) {
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fprintf(stderr, "did not receive status back\n");
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return -1;
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}
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if (memcmp(line, "unpack ok\n", 10)) {
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fputs(line, stderr);
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ret = -1;
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}
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while (1) {
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len = packet_read_line(in, line, sizeof(line));
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if (!len)
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break;
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if (len < 3 ||
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(memcmp(line, "ok", 2) && memcmp(line, "ng", 2))) {
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fprintf(stderr, "protocol error: %s\n", line);
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ret = -1;
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break;
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}
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if (!memcmp(line, "ok", 2))
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continue;
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fputs(line, stderr);
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ret = -1;
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}
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return ret;
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}
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2005-08-04 03:35:29 +04:00
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static int send_pack(int in, int out, int nr_refspec, char **refspec)
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2005-06-30 06:09:05 +04:00
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{
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2005-06-30 09:50:48 +04:00
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struct ref *ref;
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2005-07-09 00:58:40 +04:00
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int new_refs;
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2005-12-14 03:45:40 +03:00
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int ret = 0;
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2005-12-26 10:18:37 +03:00
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int ask_for_status_report = 0;
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int expect_status_report = 0;
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2005-06-30 09:50:48 +04:00
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2005-08-04 03:35:29 +04:00
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/* No funny business with the matcher */
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Improve git-peek-remote
This makes git-peek-remote able to basically do everything that
git-ls-remote does (but obviously just for the native protocol, so no
http[s]: or rsync: support).
The default behaviour is the same, but you can now give a mixture of
"--refs", "--tags" and "--heads" flags, where "--refs" forces
git-peek-remote to only show real refs (ie none of the fakey tag lookups,
but also not the special pseudo-refs like HEAD and MERGE_HEAD).
The "--tags" and "--heads" flags respectively limit the output to just
regular tags and heads, of course.
You can still also ask to limit them by name too.
You can combine the flags, so
git peek-remote --refs --tags .
will show all local _true_ tags, without the generated tag lookups
(compare the output without the "--refs" flag).
And "--tags --heads" will show both tags and heads, but will avoid (for
example) any special refs outside of the standard locations.
I'm also planning on adding a "--ignore-local" flag that allows us to ask
it to ignore any refs that we already have in the local tree, but that's
an independent thing.
All this is obviously gearing up to making "git fetch" cheaper.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-04 23:29:10 +04:00
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remote_tail = get_remote_heads(in, &remote_refs, 0, NULL, REF_NORMAL);
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2005-08-04 03:35:29 +04:00
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get_local_heads();
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2005-07-09 00:58:40 +04:00
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2005-12-26 10:18:37 +03:00
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/* Does the other end support the reporting? */
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if (server_supports("report-status"))
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ask_for_status_report = 1;
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2005-08-04 03:35:29 +04:00
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/* match them up */
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if (!remote_tail)
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remote_tail = &remote_refs;
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if (match_refs(local_refs, remote_refs, &remote_tail,
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nr_refspec, refspec, send_all))
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return -1;
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2005-12-04 19:59:37 +03:00
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if (!remote_refs) {
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fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
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return 0;
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}
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2005-07-09 00:58:40 +04:00
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/*
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2005-08-04 03:35:29 +04:00
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* Finally, tell the other end!
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2005-07-09 00:58:40 +04:00
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*/
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2005-08-04 03:35:29 +04:00
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new_refs = 0;
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for (ref = remote_refs; ref; ref = ref->next) {
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char old_hex[60], *new_hex;
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if (!ref->peer_ref)
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2005-06-30 09:50:48 +04:00
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continue;
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2005-08-05 11:47:56 +04:00
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if (!memcmp(ref->old_sha1, ref->peer_ref->new_sha1, 20)) {
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2005-12-21 05:13:02 +03:00
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if (verbose)
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|
fprintf(stderr, "'%s': up-to-date\n", ref->name);
|
2005-08-05 11:47:56 +04:00
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* This part determines what can overwrite what.
|
|
|
|
|
* The rules are:
|
|
|
|
|
*
|
2005-08-24 11:40:14 +04:00
|
|
|
* (0) you can always use --force or +A:B notation to
|
|
|
|
|
* selectively force individual ref pairs.
|
2005-08-05 11:47:56 +04:00
|
|
|
*
|
|
|
|
|
* (1) if the old thing does not exist, it is OK.
|
|
|
|
|
*
|
|
|
|
|
* (2) if you do not have the old thing, you are not allowed
|
|
|
|
|
* to overwrite it; you would not know what you are losing
|
|
|
|
|
* otherwise.
|
|
|
|
|
*
|
|
|
|
|
* (3) if both new and old are commit-ish, and new is a
|
|
|
|
|
* descendant of old, it is OK.
|
|
|
|
|
*/
|
|
|
|
|
|
2005-08-24 11:40:14 +04:00
|
|
|
if (!force_update &&
|
|
|
|
|
!is_zero_sha1(ref->old_sha1) &&
|
|
|
|
|
!ref->force) {
|
2005-12-22 23:39:39 +03:00
|
|
|
if (!has_sha1_file(ref->old_sha1) ||
|
|
|
|
|
!ref_newer(ref->peer_ref->new_sha1,
|
2005-08-04 03:35:29 +04:00
|
|
|
ref->old_sha1)) {
|
2005-12-22 23:39:39 +03:00
|
|
|
/* We do not have the remote ref, or
|
|
|
|
|
* we know that the remote ref is not
|
|
|
|
|
* an ancestor of what we are trying to
|
|
|
|
|
* push. Either way this can be losing
|
|
|
|
|
* commits at the remote end and likely
|
|
|
|
|
* we were not up to date to begin with.
|
|
|
|
|
*/
|
|
|
|
|
error("remote '%s' is not a strict "
|
|
|
|
|
"subset of local ref '%s'. "
|
|
|
|
|
"maybe you are not up-to-date and "
|
|
|
|
|
"need to pull first?",
|
|
|
|
|
ref->name,
|
2005-08-04 03:35:29 +04:00
|
|
|
ref->peer_ref->name);
|
2005-12-14 03:45:40 +03:00
|
|
|
ret = -2;
|
2005-08-04 03:35:29 +04:00
|
|
|
continue;
|
|
|
|
|
}
|
2005-06-30 09:31:41 +04:00
|
|
|
}
|
2005-08-04 03:35:29 +04:00
|
|
|
memcpy(ref->new_sha1, ref->peer_ref->new_sha1, 20);
|
|
|
|
|
if (is_zero_sha1(ref->new_sha1)) {
|
|
|
|
|
error("cannot happen anymore");
|
2005-12-14 03:45:40 +03:00
|
|
|
ret = -3;
|
2005-07-09 00:58:40 +04:00
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
new_refs++;
|
2005-06-30 09:50:48 +04:00
|
|
|
strcpy(old_hex, sha1_to_hex(ref->old_sha1));
|
|
|
|
|
new_hex = sha1_to_hex(ref->new_sha1);
|
2005-12-26 10:18:37 +03:00
|
|
|
|
|
|
|
|
if (ask_for_status_report) {
|
|
|
|
|
packet_write(out, "%s %s %s%c%s",
|
|
|
|
|
old_hex, new_hex, ref->name, 0,
|
|
|
|
|
"report-status");
|
|
|
|
|
ask_for_status_report = 0;
|
|
|
|
|
expect_status_report = 1;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
packet_write(out, "%s %s %s",
|
|
|
|
|
old_hex, new_hex, ref->name);
|
2005-08-04 03:35:29 +04:00
|
|
|
fprintf(stderr, "updating '%s'", ref->name);
|
|
|
|
|
if (strcmp(ref->name, ref->peer_ref->name))
|
|
|
|
|
fprintf(stderr, " using '%s'", ref->peer_ref->name);
|
|
|
|
|
fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex);
|
2005-06-30 06:09:05 +04:00
|
|
|
}
|
2005-08-04 03:35:29 +04:00
|
|
|
|
2005-06-30 07:50:15 +04:00
|
|
|
packet_flush(out);
|
2005-07-09 00:58:40 +04:00
|
|
|
if (new_refs)
|
2005-08-04 03:35:29 +04:00
|
|
|
pack_objects(out, remote_refs);
|
2005-06-30 06:09:05 +04:00
|
|
|
close(out);
|
2005-12-26 10:18:37 +03:00
|
|
|
|
|
|
|
|
if (expect_status_report) {
|
|
|
|
|
if (receive_status(in))
|
|
|
|
|
ret = -4;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!new_refs && ret == 0)
|
|
|
|
|
fprintf(stderr, "Everything up-to-date\n");
|
2005-12-14 03:45:40 +03:00
|
|
|
return ret;
|
2005-06-30 06:09:05 +04:00
|
|
|
}
|
|
|
|
|
|
2005-08-04 03:35:29 +04:00
|
|
|
|
2005-06-30 06:09:05 +04:00
|
|
|
int main(int argc, char **argv)
|
|
|
|
|
{
|
|
|
|
|
int i, nr_heads = 0;
|
|
|
|
|
char *dest = NULL;
|
|
|
|
|
char **heads = NULL;
|
2005-06-30 09:50:48 +04:00
|
|
|
int fd[2], ret;
|
|
|
|
|
pid_t pid;
|
2005-06-30 06:09:05 +04:00
|
|
|
|
2005-11-26 11:47:59 +03:00
|
|
|
setup_git_directory();
|
2006-03-24 10:41:18 +03:00
|
|
|
git_config(git_default_config);
|
|
|
|
|
|
2005-06-30 06:09:05 +04:00
|
|
|
argv++;
|
2005-07-17 00:26:33 +04:00
|
|
|
for (i = 1; i < argc; i++, argv++) {
|
|
|
|
|
char *arg = *argv;
|
2005-06-30 06:09:05 +04:00
|
|
|
|
|
|
|
|
if (*arg == '-') {
|
|
|
|
|
if (!strncmp(arg, "--exec=", 7)) {
|
|
|
|
|
exec = arg + 7;
|
|
|
|
|
continue;
|
|
|
|
|
}
|
2005-07-17 00:26:33 +04:00
|
|
|
if (!strcmp(arg, "--all")) {
|
|
|
|
|
send_all = 1;
|
|
|
|
|
continue;
|
|
|
|
|
}
|
2005-07-19 15:03:47 +04:00
|
|
|
if (!strcmp(arg, "--force")) {
|
|
|
|
|
force_update = 1;
|
|
|
|
|
continue;
|
|
|
|
|
}
|
2005-12-21 05:13:02 +03:00
|
|
|
if (!strcmp(arg, "--verbose")) {
|
|
|
|
|
verbose = 1;
|
|
|
|
|
continue;
|
|
|
|
|
}
|
2006-02-20 02:03:49 +03:00
|
|
|
if (!strcmp(arg, "--thin")) {
|
|
|
|
|
use_thin_pack = 1;
|
|
|
|
|
continue;
|
|
|
|
|
}
|
2005-06-30 06:09:05 +04:00
|
|
|
usage(send_pack_usage);
|
|
|
|
|
}
|
2005-07-17 00:26:33 +04:00
|
|
|
if (!dest) {
|
|
|
|
|
dest = arg;
|
|
|
|
|
continue;
|
|
|
|
|
}
|
2005-06-30 06:09:05 +04:00
|
|
|
heads = argv;
|
2005-07-17 00:26:33 +04:00
|
|
|
nr_heads = argc - i;
|
2005-06-30 06:09:05 +04:00
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (!dest)
|
|
|
|
|
usage(send_pack_usage);
|
2005-08-02 23:20:27 +04:00
|
|
|
if (heads && send_all)
|
|
|
|
|
usage(send_pack_usage);
|
2005-07-04 22:57:58 +04:00
|
|
|
pid = git_connect(fd, dest, exec);
|
2005-06-30 09:50:48 +04:00
|
|
|
if (pid < 0)
|
2005-06-30 06:09:05 +04:00
|
|
|
return 1;
|
2005-06-30 23:28:24 +04:00
|
|
|
ret = send_pack(fd[0], fd[1], nr_heads, heads);
|
2005-06-30 09:50:48 +04:00
|
|
|
close(fd[0]);
|
|
|
|
|
close(fd[1]);
|
2005-07-04 22:57:58 +04:00
|
|
|
finish_connect(pid);
|
2005-06-30 09:50:48 +04:00
|
|
|
return ret;
|
2005-06-30 06:09:05 +04:00
|
|
|
}
|
