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Merge branch 'js/remote-improvements'

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* 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
This commit is contained in:
Junio C Hamano
2009-03-17 18:55:06 -07:00
parent a57ca9dd40 8321c56b6b
commit ca8a36e6e0
17 changed files with 821 additions and 331 deletions
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145
remote.c
View File

@ -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;
}