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-rw-r--r--fetch-pack.c466
1 files changed, 0 insertions, 466 deletions
diff --git a/fetch-pack.c b/fetch-pack.c
deleted file mode 100644
index 535de10660..0000000000
--- a/fetch-pack.c
+++ /dev/null
@@ -1,466 +0,0 @@
-#include "cache.h"
-#include "refs.h"
-#include "pkt-line.h"
-#include "commit.h"
-#include "tag.h"
-
-static int keep_pack;
-static int quiet;
-static int verbose;
-static const char fetch_pack_usage[] =
-"git-fetch-pack [-q] [-v] [-k] [--thin] [--exec=upload-pack] [host:]directory <refs>...";
-static const char *exec = "git-upload-pack";
-
-#define COMPLETE (1U << 0)
-#define COMMON (1U << 1)
-#define COMMON_REF (1U << 2)
-#define SEEN (1U << 3)
-#define POPPED (1U << 4)
-
-static struct commit_list *rev_list = NULL;
-static int non_common_revs = 0, multi_ack = 0, use_thin_pack = 0;
-
-static void rev_list_push(struct commit *commit, int mark)
-{
- if (!(commit->object.flags & mark)) {
- commit->object.flags |= mark;
-
- if (!(commit->object.parsed))
- parse_commit(commit);
-
- insert_by_date(commit, &rev_list);
-
- if (!(commit->object.flags & COMMON))
- non_common_revs++;
- }
-}
-
-static int rev_list_insert_ref(const char *path, const unsigned char *sha1)
-{
- struct object *o = deref_tag(parse_object(sha1), path, 0);
-
- if (o && o->type == commit_type)
- rev_list_push((struct commit *)o, SEEN);
-
- return 0;
-}
-
-/*
- This function marks a rev and its ancestors as common.
- In some cases, it is desirable to mark only the ancestors (for example
- when only the server does not yet know that they are common).
-*/
-
-static void mark_common(struct commit *commit,
- int ancestors_only, int dont_parse)
-{
- if (commit != NULL && !(commit->object.flags & COMMON)) {
- struct object *o = (struct object *)commit;
-
- if (!ancestors_only)
- o->flags |= COMMON;
-
- if (!(o->flags & SEEN))
- rev_list_push(commit, SEEN);
- else {
- struct commit_list *parents;
-
- if (!ancestors_only && !(o->flags & POPPED))
- non_common_revs--;
- if (!o->parsed && !dont_parse)
- parse_commit(commit);
-
- for (parents = commit->parents;
- parents;
- parents = parents->next)
- mark_common(parents->item, 0, dont_parse);
- }
- }
-}
-
-/*
- Get the next rev to send, ignoring the common.
-*/
-
-static const unsigned char* get_rev(void)
-{
- 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 (!(parents->item->object.flags & SEEN))
- rev_list_push(parents->item, mark);
- if (mark & COMMON)
- mark_common(parents->item, 1, 0);
- 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, retval;
- const unsigned char *sha1;
-
- for_each_ref(rev_list_insert_ref);
-
- fetching = 0;
- for ( ; refs ; refs = refs->next) {
- unsigned char *remote = refs->old_sha1;
- struct object *o;
-
- /*
- * If that object is complete (i.e. it is an ancestor of a
- * local ref), we tell them we have it but do not have to
- * tell them about its ancestors, which they already know
- * about.
- *
- * We use lookup_object here because we are only
- * interested in the case we *know* the object is
- * reachable and we have already scanned it.
- */
- if (((o = lookup_object(remote)) != NULL) &&
- (o->flags & COMPLETE)) {
- continue;
- }
-
- packet_write(fd[1], "want %s%s%s\n", sha1_to_hex(remote),
- (multi_ack ? " multi_ack" : ""),
- (use_thin_pack ? " thin-pack" : ""));
- fetching++;
- }
- packet_flush(fd[1]);
- if (!fetching)
- return 1;
-
- flushes = 0;
- retval = -1;
- while ((sha1 = get_rev())) {
- 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++;
-
- /*
- * We keep one window "ahead" of the other side, and
- * will wait for an ACK only on the next one
- */
- 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) {
- flushes = 0;
- multi_ack = 0;
- retval = 0;
- goto done;
- } else if (ack == 2) {
- struct commit *commit =
- lookup_commit(result_sha1);
- mark_common(commit, 0, 1);
- retval = 0;
- }
- } while (ack);
- flushes--;
- }
- }
-done:
- packet_write(fd[1], "done\n");
- if (verbose)
- fprintf(stderr, "done\n");
- if (retval != 0) {
- multi_ack = 0;
- flushes++;
- }
- while (flushes || multi_ack) {
- int ack = get_ack(fd[0], result_sha1);
- if (ack) {
- if (verbose)
- fprintf(stderr, "got ack (%d) %s\n", ack,
- sha1_to_hex(result_sha1));
- if (ack == 1)
- return 0;
- multi_ack = 1;
- continue;
- }
- flushes--;
- }
- return retval;
-}
-
-static struct commit_list *complete = NULL;
-
-static int mark_complete(const char *path, const unsigned char *sha1)
-{
- struct object *o = parse_object(sha1);
-
- while (o && o->type == tag_type) {
- struct tag *t = (struct tag *) o;
- if (!t->tagged)
- break; /* broken repository */
- o->flags |= COMPLETE;
- o = parse_object(t->tagged->sha1);
- }
- if (o && o->type == commit_type) {
- struct commit *commit = (struct commit *)o;
- commit->object.flags |= COMPLETE;
- insert_by_date(commit, &complete);
- }
- return 0;
-}
-
-static void mark_recent_complete_commits(unsigned long cutoff)
-{
- while (complete && cutoff <= complete->item->date) {
- if (verbose)
- fprintf(stderr, "Marking %s as complete\n",
- sha1_to_hex(complete->item->object.sha1));
- pop_most_recent_commit(&complete, COMPLETE);
- }
-}
-
-static void filter_refs(struct ref **refs, int nr_match, char **match)
-{
- struct ref *prev, *current, *next;
-
- for (prev = NULL, current = *refs; current; current = next) {
- next = current->next;
- if ((!memcmp(current->name, "refs/", 5) &&
- check_ref_format(current->name + 5)) ||
- !path_match(current->name, nr_match, match)) {
- if (prev == NULL)
- *refs = next;
- else
- prev->next = next;
- free(current);
- } else
- prev = current;
- }
-}
-
-static int everything_local(struct ref **refs, int nr_match, char **match)
-{
- struct ref *ref;
- int retval;
- unsigned long cutoff = 0;
-
- track_object_refs = 0;
- save_commit_buffer = 0;
-
- for (ref = *refs; ref; ref = ref->next) {
- struct object *o;
-
- o = parse_object(ref->old_sha1);
- if (!o)
- continue;
-
- /* We already have it -- which may mean that we were
- * in sync with the other side at some time after
- * that (it is OK if we guess wrong here).
- */
- if (o->type == commit_type) {
- struct commit *commit = (struct commit *)o;
- if (!cutoff || cutoff < commit->date)
- cutoff = commit->date;
- }
- }
-
- for_each_ref(mark_complete);
- if (cutoff)
- mark_recent_complete_commits(cutoff);
-
- /*
- * Mark all complete remote refs as common refs.
- * Don't mark them common yet; the server has to be told so first.
- */
- for (ref = *refs; ref; ref = ref->next) {
- struct object *o = deref_tag(lookup_object(ref->old_sha1),
- NULL, 0);
-
- if (!o || o->type != commit_type || !(o->flags & COMPLETE))
- continue;
-
- if (!(o->flags & SEEN)) {
- rev_list_push((struct commit *)o, COMMON_REF | SEEN);
-
- mark_common((struct commit *)o, 1, 1);
- }
- }
-
- filter_refs(refs, nr_match, match);
-
- for (retval = 1, ref = *refs; ref ; ref = ref->next) {
- const unsigned char *remote = ref->old_sha1;
- unsigned char local[20];
- struct object *o;
-
- o = lookup_object(remote);
- if (!o || !(o->flags & COMPLETE)) {
- retval = 0;
- if (!verbose)
- continue;
- fprintf(stderr,
- "want %s (%s)\n", sha1_to_hex(remote),
- ref->name);
- continue;
- }
-
- memcpy(ref->new_sha1, local, 20);
- if (!verbose)
- continue;
- fprintf(stderr,
- "already have %s (%s)\n", sha1_to_hex(remote),
- ref->name);
- }
- return retval;
-}
-
-static int fetch_pack(int fd[2], int nr_match, char **match)
-{
- struct ref *ref;
- unsigned char sha1[20];
- int status;
-
- get_remote_heads(fd[0], &ref, 0, NULL, 0);
- if (server_supports("multi_ack")) {
- if (verbose)
- fprintf(stderr, "Server supports multi_ack\n");
- multi_ack = 1;
- }
- if (!ref) {
- packet_flush(fd[1]);
- die("no matching remote head");
- }
- if (everything_local(&ref, nr_match, match)) {
- packet_flush(fd[1]);
- goto all_done;
- }
- if (find_common(fd, sha1, ref) < 0)
- fprintf(stderr, "warning: no common commits\n");
-
- if (keep_pack)
- status = receive_keep_pack(fd, "git-fetch-pack", quiet);
- else
- status = receive_unpack_pack(fd, "git-fetch-pack", quiet);
-
- if (status)
- die("git-fetch-pack: fetch failed.");
-
- all_done:
- while (ref) {
- printf("%s %s\n",
- sha1_to_hex(ref->old_sha1), ref->name);
- ref = ref->next;
- }
- return 0;
-}
-
-int main(int argc, char **argv)
-{
- int i, ret, nr_heads;
- char *dest = NULL, **heads;
- int fd[2];
- pid_t pid;
-
- setup_git_directory();
-
- nr_heads = 0;
- heads = NULL;
- for (i = 1; i < argc; i++) {
- char *arg = argv[i];
-
- if (*arg == '-') {
- if (!strncmp("--exec=", arg, 7)) {
- exec = arg + 7;
- continue;
- }
- if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
- quiet = 1;
- continue;
- }
- if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
- keep_pack = 1;
- continue;
- }
- if (!strcmp("--thin", arg)) {
- use_thin_pack = 1;
- continue;
- }
- if (!strcmp("-v", arg)) {
- verbose = 1;
- continue;
- }
- usage(fetch_pack_usage);
- }
- dest = arg;
- heads = argv + i + 1;
- nr_heads = argc - i - 1;
- break;
- }
- if (!dest)
- usage(fetch_pack_usage);
- if (keep_pack)
- use_thin_pack = 0;
- pid = git_connect(fd, dest, exec);
- if (pid < 0)
- return 1;
- ret = fetch_pack(fd, nr_heads, heads);
- close(fd[0]);
- close(fd[1]);
- finish_connect(pid);
-
- if (!ret && nr_heads) {
- /* If the heads to pull were given, we should have
- * consumed all of them by matching the remote.
- * Otherwise, 'git-fetch remote no-such-ref' would
- * silently succeed without issuing an error.
- */
- for (i = 0; i < nr_heads; i++)
- if (heads[i] && heads[i][0]) {
- error("no such remote ref %s", heads[i]);
- ret = 1;
- }
- }
-
- return ret;
-}
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