static const char *exec = "git-upload-pack";
#define COMPLETE (1U << 0)
-#define COMMON (1U << 1)
-#define COMMON_REF (1U << 2 | COMMON)
-#define SEEN (1U << 3)
-#define POPPED (1U << 4)
-
-static struct commit_list *rev_list = NULL;
-static struct commit_list *rev_list_end = NULL;
-static unsigned long non_common_revs = 0;
-
-static void rev_list_append(struct commit *commit, int mark)
-{
- if (!(commit->object.flags & mark)) {
- commit->object.flags |= mark;
-
- if (rev_list == NULL) {
- commit_list_insert(commit, &rev_list);
- rev_list_end = rev_list;
- } else {
- commit_list_insert(commit, &(rev_list_end->next));
- rev_list_end = rev_list_end->next;
- }
-
- if (!(commit->object.flags & COMMON))
- non_common_revs++;
- }
-}
-
-static int rev_list_append_sha1(const char *path, const unsigned char *sha1)
-{
- struct object *o = deref_tag(parse_object(sha1));
-
- if (o->type == commit_type)
- rev_list_append((struct commit *)o, SEEN);
-
- return 0;
-}
-
-static void mark_common(struct commit *commit)
-{
- if (commit != NULL && !(commit->object.flags & COMMON)) {
- struct object *o = (struct object *)commit;
- o->flags |= COMMON;
- if (!(o->flags & SEEN))
- rev_list_append(commit, SEEN);
- else {
- struct commit_list *parents;
-
- if (!(o->flags & POPPED))
- non_common_revs--;
- if (!o->parsed)
- parse_commit(commit);
- for (parents = commit->parents;
- parents;
- parents = parents->next)
- mark_common(parents->item);
- }
- }
-}
-
-/*
- Get the next rev to send, ignoring the common.
-*/
-
-static const unsigned char* get_rev()
-{
- struct commit *commit = NULL;
-
- while (commit == NULL) {
- unsigned int mark;
- struct commit_list* parents;
-
- if (rev_list == NULL || non_common_revs == 0)
- return NULL;
-
- commit = rev_list->item;
- if (!(commit->object.parsed))
- parse_commit(commit);
- commit->object.flags |= POPPED;
- if (!(commit->object.flags & COMMON))
- non_common_revs--;
-
- parents = commit->parents;
-
- if (commit->object.flags & COMMON) {
- /* do not send "have", and ignore ancestors */
- commit = NULL;
- mark = COMMON | SEEN;
- } else if (commit->object.flags & COMMON_REF)
- /* send "have", and ignore ancestors */
- mark = COMMON | SEEN;
- else
- /* send "have", also for its ancestors */
- mark = SEEN;
-
- while (parents) {
- if (mark & COMMON)
- mark_common(parents->item);
- else
- rev_list_append(parents->item, mark);
- parents = parents->next;
- }
-
- rev_list = rev_list->next;
- }
-
- return commit->object.sha1;
-}
static int find_common(int fd[2], unsigned char *result_sha1,
struct ref *refs)
{
int fetching;
- int count = 0, flushes = 0, multi_ack = 0, retval;
- const unsigned char *sha1;
-
- for_each_ref(rev_list_append_sha1);
+ static char line[1000];
+ static char rev_command[1024];
+ int count = 0, flushes = 0, retval, rev_command_len;
+ FILE *revs;
+ strcpy(rev_command, "git-rev-list $(git-rev-parse --all)");
+ rev_command_len = strlen(rev_command);
fetching = 0;
for ( ; refs ; refs = refs->next) {
unsigned char *remote = refs->old_sha1;
*/
if (((o = lookup_object(remote)) != NULL) &&
(o->flags & COMPLETE)) {
- o = deref_tag(o);
-
- if (o->type == commit_type)
- rev_list_append((struct commit *)o,
- COMMON_REF | SEEN);
-
+ struct commit_list *p;
+ struct commit *commit =
+ (struct commit *) (o = deref_tag(o));
+ if (!o)
+ goto repair;
+ if (o->type != commit_type)
+ continue;
+ p = commit->parents;
+ while (p &&
+ rev_command_len + 44 < sizeof(rev_command)) {
+ snprintf(rev_command + rev_command_len, 44,
+ " ^%s",
+ sha1_to_hex(p->item->object.sha1));
+ rev_command_len += 43;
+ p = p->next;
+ }
continue;
}
-
- packet_write(fd[1], "want %s multi_ack\n", sha1_to_hex(remote));
+ repair:
+ packet_write(fd[1], "want %s\n", sha1_to_hex(remote));
fetching++;
}
packet_flush(fd[1]);
if (!fetching)
return 1;
- flushes = 0;
+ revs = popen(rev_command, "r");
+ if (!revs)
+ die("unable to run 'git-rev-list'");
+
+ flushes = 1;
retval = -1;
- while ((sha1 = get_rev())) {
+ while (fgets(line, sizeof(line), revs) != NULL) {
+ unsigned char sha1[20];
+ if (get_sha1_hex(line, sha1))
+ die("git-fetch-pack: expected object name, got crud");
packet_write(fd[1], "have %s\n", sha1_to_hex(sha1));
if (verbose)
fprintf(stderr, "have %s\n", sha1_to_hex(sha1));
if (!(31 & ++count)) {
- int ack;
-
packet_flush(fd[1]);
flushes++;
*/
if (count == 32)
continue;
-
- do {
- ack = get_ack(fd[0], result_sha1);
- if (verbose && ack)
- fprintf(stderr, "got ack %d %s\n", ack,
- sha1_to_hex(result_sha1));
- if (ack == 1) {
- if (!multi_ack)
- flushes = 0;
- retval = 0;
- goto done;
- } else if (ack == 2) {
- multi_ack = 1;
- mark_common((struct commit *)
- lookup_object(result_sha1));
- retval = 0;
- }
- } while(ack);
+ if (get_ack(fd[0], result_sha1)) {
+ flushes = 0;
+ retval = 0;
+ if (verbose)
+ fprintf(stderr, "got ack\n");
+ break;
+ }
flushes--;
}
}
-done:
- if (multi_ack) {
- packet_flush(fd[1]);
- flushes++;
- }
+ pclose(revs);
packet_write(fd[1], "done\n");
if (verbose)
fprintf(stderr, "done\n");
- if (retval != 0)
- flushes++;
while (flushes) {
+ flushes--;
if (get_ack(fd[0], result_sha1)) {
if (verbose)
- fprintf(stderr, "got ack %s\n",
- sha1_to_hex(result_sha1));
- if (!multi_ack)
- return 0;
- retval = 0;
- continue;
+ fprintf(stderr, "got ack\n");
+ return 0;
}
- flushes--;
}
return retval;
}
projects / git.git / blobdiff