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authorJunio C Hamano <gitster@pobox.com>2009-03-18 01:55:06 (GMT)
committerJunio C Hamano <gitster@pobox.com>2009-03-18 01:55:06 (GMT)
commitca8a36e6e0cf6ee952df16160bc853630c56b997 (patch)
treea7a0cc36a4aac48173264e8d84dbe4ba1dcd7fad /remote.c
parenta57ca9dd400c8459a3cd3d769bab317f57d1e9ac (diff)
parent8321c56b6bae25a2d70790f452df894be536b32c (diff)
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Merge branch 'js/remote-improvements'
* js/remote-improvements: (23 commits) builtin-remote.c: no "commented out" code, please builtin-remote: new show output style for push refspecs builtin-remote: new show output style remote: make guess_remote_head() use exact HEAD lookup if it is available builtin-remote: add set-head subcommand builtin-remote: teach show to display remote HEAD builtin-remote: fix two inconsistencies in the output of "show <remote>" builtin-remote: make get_remote_ref_states() always populate states.tracked builtin-remote: rename variables and eliminate redundant function call builtin-remote: remove unused code in get_ref_states builtin-remote: refactor duplicated cleanup code string-list: new for_each_string_list() function remote: make match_refs() not short-circuit remote: make match_refs() copy src ref before assigning to peer_ref remote: let guess_remote_head() optionally return all matches remote: make copy_ref() perform a deep copy remote: simplify guess_remote_head() move locate_head() to remote.c move duplicated ref_newer() to remote.c move duplicated get_local_heads() to remote.c ... Conflicts: builtin-clone.c
Diffstat (limited to 'remote.c')
-rw-r--r--remote.c145
1 files changed, 136 insertions, 9 deletions
diff --git a/remote.c b/remote.c
index 7efaa02..7172835 100644
--- a/remote.c
+++ b/remote.c
@@ -5,6 +5,7 @@
#include "diff.h"
#include "revision.h"
#include "dir.h"
+#include "tag.h"
static struct refspec s_tag_refspec = {
0,
@@ -778,10 +779,18 @@ struct ref *alloc_ref(const char *name)
static struct ref *copy_ref(const struct ref *ref)
{
- struct ref *ret = xmalloc(sizeof(struct ref) + strlen(ref->name) + 1);
- memcpy(ret, ref, sizeof(struct ref) + strlen(ref->name) + 1);
- ret->next = NULL;
- return ret;
+ struct ref *cpy;
+ size_t len;
+ if (!ref)
+ return NULL;
+ len = strlen(ref->name);
+ cpy = xmalloc(sizeof(struct ref) + len + 1);
+ memcpy(cpy, ref, sizeof(struct ref) + len + 1);
+ cpy->next = NULL;
+ cpy->symref = ref->symref ? xstrdup(ref->symref) : NULL;
+ cpy->remote_status = ref->remote_status ? xstrdup(ref->remote_status) : NULL;
+ cpy->peer_ref = copy_ref(ref->peer_ref);
+ return cpy;
}
struct ref *copy_ref_list(const struct ref *ref)
@@ -800,6 +809,7 @@ static void free_ref(struct ref *ref)
{
if (!ref)
return;
+ free_ref(ref->peer_ref);
free(ref->remote_status);
free(ref->symref);
free(ref);
@@ -810,7 +820,6 @@ void free_refs(struct ref *ref)
struct ref *next;
while (ref) {
next = ref->next;
- free(ref->peer_ref);
free_ref(ref);
ref = next;
}
@@ -927,6 +936,7 @@ static int match_explicit(struct ref *src, struct ref *dst,
struct refspec *rs)
{
struct ref *matched_src, *matched_dst;
+ int copy_src;
const char *dst_value = rs->dst;
char *dst_guess;
@@ -937,6 +947,7 @@ static int match_explicit(struct ref *src, struct ref *dst,
matched_src = matched_dst = NULL;
switch (count_refspec_match(rs->src, src, &matched_src)) {
case 1:
+ copy_src = 1;
break;
case 0:
/* The source could be in the get_sha1() format
@@ -946,6 +957,7 @@ static int match_explicit(struct ref *src, struct ref *dst,
matched_src = try_explicit_object_name(rs->src);
if (!matched_src)
return error("src refspec %s does not match any.", rs->src);
+ copy_src = 0;
break;
default:
return error("src refspec %s matches more than one.", rs->src);
@@ -991,7 +1003,7 @@ static int match_explicit(struct ref *src, struct ref *dst,
return error("dst ref %s receives from more than one src.",
matched_dst->name);
else {
- matched_dst->peer_ref = matched_src;
+ matched_dst->peer_ref = copy_src ? copy_ref(matched_src) : matched_src;
matched_dst->force = rs->force;
}
return 0;
@@ -1040,6 +1052,7 @@ int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
struct refspec *rs;
int send_all = flags & MATCH_REFS_ALL;
int send_mirror = flags & MATCH_REFS_MIRROR;
+ int errs;
static const char *default_refspec[] = { ":", 0 };
if (!nr_refspec) {
@@ -1047,8 +1060,7 @@ int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
refspec = default_refspec;
}
rs = parse_push_refspec(nr_refspec, (const char **) refspec);
- if (match_explicit_refs(src, dst, dst_tail, rs, nr_refspec))
- return -1;
+ errs = match_explicit_refs(src, dst, dst_tail, rs, nr_refspec);
/* pick the remainder */
for ( ; src; src = src->next) {
@@ -1099,11 +1111,13 @@ int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
dst_peer = make_linked_ref(dst_name, dst_tail);
hashcpy(dst_peer->new_sha1, src->new_sha1);
}
- dst_peer->peer_ref = src;
+ dst_peer->peer_ref = copy_ref(src);
dst_peer->force = pat->force;
free_name:
free(dst_name);
}
+ if (errs)
+ return -1;
return 0;
}
@@ -1269,6 +1283,54 @@ int resolve_remote_symref(struct ref *ref, struct ref *list)
return 1;
}
+static void unmark_and_free(struct commit_list *list, unsigned int mark)
+{
+ while (list) {
+ struct commit_list *temp = list;
+ temp->item->object.flags &= ~mark;
+ list = temp->next;
+ free(temp);
+ }
+}
+
+int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1)
+{
+ struct object *o;
+ struct commit *old, *new;
+ struct commit_list *list, *used;
+ int found = 0;
+
+ /* Both new and old must be commit-ish and new is descendant of
+ * old. Otherwise we require --force.
+ */
+ o = deref_tag(parse_object(old_sha1), NULL, 0);
+ if (!o || o->type != OBJ_COMMIT)
+ return 0;
+ old = (struct commit *) o;
+
+ o = deref_tag(parse_object(new_sha1), NULL, 0);
+ if (!o || o->type != OBJ_COMMIT)
+ return 0;
+ new = (struct commit *) o;
+
+ if (parse_commit(new) < 0)
+ return 0;
+
+ used = list = NULL;
+ commit_list_insert(new, &list);
+ while (list) {
+ new = pop_most_recent_commit(&list, TMP_MARK);
+ commit_list_insert(new, &used);
+ if (new == old) {
+ found = 1;
+ break;
+ }
+ }
+ unmark_and_free(list, TMP_MARK);
+ unmark_and_free(used, TMP_MARK);
+ return found;
+}
+
/*
* Return true if there is anything to report, otherwise false.
*/
@@ -1376,3 +1438,68 @@ int format_tracking_info(struct branch *branch, struct strbuf *sb)
base, num_ours, num_theirs);
return 1;
}
+
+static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+{
+ struct ref ***local_tail = cb_data;
+ struct ref *ref;
+ int len;
+
+ /* we already know it starts with refs/ to get here */
+ if (check_ref_format(refname + 5))
+ return 0;
+
+ len = strlen(refname) + 1;
+ ref = xcalloc(1, sizeof(*ref) + len);
+ hashcpy(ref->new_sha1, sha1);
+ memcpy(ref->name, refname, len);
+ **local_tail = ref;
+ *local_tail = &ref->next;
+ return 0;
+}
+
+struct ref *get_local_heads(void)
+{
+ struct ref *local_refs, **local_tail = &local_refs;
+ for_each_ref(one_local_ref, &local_tail);
+ return local_refs;
+}
+
+struct ref *guess_remote_head(const struct ref *head,
+ const struct ref *refs,
+ int all)
+{
+ const struct ref *r;
+ struct ref *list = NULL;
+ struct ref **tail = &list;
+
+ if (!head)
+ return NULL;
+
+ /*
+ * Some transports support directly peeking at
+ * where HEAD points; if that is the case, then
+ * we don't have to guess.
+ */
+ if (head->symref)
+ return copy_ref(find_ref_by_name(refs, head->symref));
+
+ /* If refs/heads/master could be right, it is. */
+ if (!all) {
+ r = find_ref_by_name(refs, "refs/heads/master");
+ if (r && !hashcmp(r->old_sha1, head->old_sha1))
+ return copy_ref(r);
+ }
+
+ /* Look for another ref that points there */
+ for (r = refs; r; r = r->next) {
+ if (r != head && !hashcmp(r->old_sha1, head->old_sha1)) {
+ *tail = copy_ref(r);
+ tail = &((*tail)->next);
+ if (!all)
+ break;
+ }
+ }
+
+ return list;
+}