#include "diff.h"
#include "revision.h"
#include "dir.h"
+#include "tag.h"
+#include "string-list.h"
static struct refspec s_tag_refspec = {
0,
1,
0,
- "refs/tags/",
- "refs/tags/"
+ "refs/tags/*",
+ "refs/tags/*"
};
const struct refspec *tag_refspec = &s_tag_refspec;
int instead_of_nr;
int instead_of_alloc;
};
+struct rewrites {
+ struct rewrite **rewrite;
+ int rewrite_alloc;
+ int rewrite_nr;
+};
static struct remote **remotes;
static int remotes_alloc;
static const char *default_remote_name;
static int explicit_default_remote_name;
-static struct rewrite **rewrite;
-static int rewrite_alloc;
-static int rewrite_nr;
+static struct rewrites rewrites;
+static struct rewrites rewrites_push;
#define BUF_SIZE (2048)
static char buffer[BUF_SIZE];
-static const char *alias_url(const char *url)
+static int valid_remote(const struct remote *remote)
+{
+ return (!!remote->url) || (!!remote->foreign_vcs);
+}
+
+static const char *alias_url(const char *url, struct rewrites *r)
{
int i, j;
char *ret;
longest = NULL;
longest_i = -1;
- for (i = 0; i < rewrite_nr; i++) {
- if (!rewrite[i])
+ for (i = 0; i < r->rewrite_nr; i++) {
+ if (!r->rewrite[i])
continue;
- for (j = 0; j < rewrite[i]->instead_of_nr; j++) {
- if (!prefixcmp(url, rewrite[i]->instead_of[j].s) &&
+ for (j = 0; j < r->rewrite[i]->instead_of_nr; j++) {
+ if (!prefixcmp(url, r->rewrite[i]->instead_of[j].s) &&
(!longest ||
- longest->len < rewrite[i]->instead_of[j].len)) {
- longest = &(rewrite[i]->instead_of[j]);
+ longest->len < r->rewrite[i]->instead_of[j].len)) {
+ longest = &(r->rewrite[i]->instead_of[j]);
longest_i = i;
}
}
if (!longest)
return url;
- ret = xmalloc(rewrite[longest_i]->baselen +
+ ret = xmalloc(r->rewrite[longest_i]->baselen +
(strlen(url) - longest->len) + 1);
- strcpy(ret, rewrite[longest_i]->base);
- strcpy(ret + rewrite[longest_i]->baselen, url + longest->len);
+ strcpy(ret, r->rewrite[longest_i]->base);
+ strcpy(ret + r->rewrite[longest_i]->baselen, url + longest->len);
return ret;
}
remote->url[remote->url_nr++] = url;
}
+static void add_pushurl(struct remote *remote, const char *pushurl)
+{
+ ALLOC_GROW(remote->pushurl, remote->pushurl_nr + 1, remote->pushurl_alloc);
+ remote->pushurl[remote->pushurl_nr++] = pushurl;
+}
+
+static void add_pushurl_alias(struct remote *remote, const char *url)
+{
+ const char *pushurl = alias_url(url, &rewrites_push);
+ if (pushurl != url)
+ add_pushurl(remote, pushurl);
+}
+
static void add_url_alias(struct remote *remote, const char *url)
{
- add_url(remote, alias_url(url));
+ add_url(remote, alias_url(url, &rewrites));
+ add_pushurl_alias(remote, url);
}
static struct remote *make_remote(const char *name, int len)
return ret;
}
-static struct rewrite *make_rewrite(const char *base, int len)
+static struct rewrite *make_rewrite(struct rewrites *r, const char *base, int len)
{
struct rewrite *ret;
int i;
- for (i = 0; i < rewrite_nr; i++) {
+ for (i = 0; i < r->rewrite_nr; i++) {
if (len
- ? (len == rewrite[i]->baselen &&
- !strncmp(base, rewrite[i]->base, len))
- : !strcmp(base, rewrite[i]->base))
- return rewrite[i];
+ ? (len == r->rewrite[i]->baselen &&
+ !strncmp(base, r->rewrite[i]->base, len))
+ : !strcmp(base, r->rewrite[i]->base))
+ return r->rewrite[i];
}
- ALLOC_GROW(rewrite, rewrite_nr + 1, rewrite_alloc);
+ ALLOC_GROW(r->rewrite, r->rewrite_nr + 1, r->rewrite_alloc);
ret = xcalloc(1, sizeof(struct rewrite));
- rewrite[rewrite_nr++] = ret;
+ r->rewrite[r->rewrite_nr++] = ret;
if (len) {
ret->base = xstrndup(base, len);
ret->baselen = len;
strbuf_addstr(&branch, "HEAD:");
}
add_url_alias(remote, p);
- add_fetch_refspec(remote, strbuf_detach(&branch, 0));
+ add_fetch_refspec(remote, strbuf_detach(&branch, NULL));
/*
* Cogito compatible push: push current HEAD to remote #branch
* (master if missing)
strbuf_addf(&branch, ":refs/heads/%s", frag);
else
strbuf_addstr(&branch, ":refs/heads/master");
- add_push_refspec(remote, strbuf_detach(&branch, 0));
+ add_push_refspec(remote, strbuf_detach(&branch, NULL));
remote->fetch_tags = 1; /* always auto-follow */
}
subkey = strrchr(name, '.');
if (!subkey)
return 0;
- rewrite = make_rewrite(name, subkey - name);
if (!strcmp(subkey, ".insteadof")) {
+ rewrite = make_rewrite(&rewrites, name, subkey - name);
+ if (!value)
+ return config_error_nonbool(key);
+ add_instead_of(rewrite, xstrdup(value));
+ } else if (!strcmp(subkey, ".pushinsteadof")) {
+ rewrite = make_rewrite(&rewrites_push, name, subkey - name);
if (!value)
return config_error_nonbool(key);
add_instead_of(rewrite, xstrdup(value));
}
subkey = strrchr(name, '.');
if (!subkey)
- return error("Config with no key for remote %s", name);
+ return 0;
remote = make_remote(name, subkey - name);
remote->origin = REMOTE_CONFIG;
if (!strcmp(subkey, ".mirror"))
remote->mirror = git_config_bool(key, value);
else if (!strcmp(subkey, ".skipdefaultupdate"))
remote->skip_default_update = git_config_bool(key, value);
-
+ else if (!strcmp(subkey, ".skipfetchall"))
+ remote->skip_default_update = git_config_bool(key, value);
else if (!strcmp(subkey, ".url")) {
const char *v;
if (git_config_string(&v, key, value))
return -1;
add_url(remote, v);
+ } else if (!strcmp(subkey, ".pushurl")) {
+ const char *v;
+ if (git_config_string(&v, key, value))
+ return -1;
+ add_pushurl(remote, v);
} else if (!strcmp(subkey, ".push")) {
const char *v;
if (git_config_string(&v, key, value))
} else if (!strcmp(subkey, ".proxy")) {
return git_config_string((const char **)&remote->http_proxy,
key, value);
+ } else if (!strcmp(subkey, ".vcs")) {
+ return git_config_string(&remote->foreign_vcs, key, value);
}
return 0;
}
{
int i, j;
for (i = 0; i < remotes_nr; i++) {
+ int add_pushurl_aliases;
if (!remotes[i])
continue;
+ for (j = 0; j < remotes[i]->pushurl_nr; j++) {
+ remotes[i]->pushurl[j] = alias_url(remotes[i]->pushurl[j], &rewrites);
+ }
+ add_pushurl_aliases = remotes[i]->pushurl_nr == 0;
for (j = 0; j < remotes[i]->url_nr; j++) {
- remotes[i]->url[j] = alias_url(remotes[i]->url[j]);
+ if (add_pushurl_aliases)
+ add_pushurl_alias(remotes[i], remotes[i]->url[j]);
+ remotes[i]->url[j] = alias_url(remotes[i]->url[j], &rewrites);
}
}
}
*/
static int verify_refname(char *name, int is_glob)
{
- int result, len = -1;
+ int result;
- if (is_glob) {
- len = strlen(name);
- assert(name[len - 1] == '/');
- name[len - 1] = '\0';
- }
result = check_ref_format(name);
- if (is_glob)
- name[len - 1] = '/';
+ if (is_glob && result == CHECK_REF_FORMAT_WILDCARD)
+ result = CHECK_REF_FORMAT_OK;
return result;
}
int is_glob;
const char *lhs, *rhs;
- llen = is_glob = 0;
+ is_glob = 0;
lhs = refspec[i];
if (*lhs == '+') {
if (rhs) {
size_t rlen = strlen(++rhs);
- is_glob = (2 <= rlen && !strcmp(rhs + rlen - 2, "/*"));
- rs[i].dst = xstrndup(rhs, rlen - is_glob);
+ is_glob = (1 <= rlen && strchr(rhs, '*'));
+ rs[i].dst = xstrndup(rhs, rlen);
}
llen = (rhs ? (rhs - lhs - 1) : strlen(lhs));
- if (2 <= llen && !memcmp(lhs + llen - 2, "/*", 2)) {
+ if (1 <= llen && memchr(lhs, '*', llen)) {
if ((rhs && !is_glob) || (!rhs && fetch))
goto invalid;
is_glob = 1;
- llen--;
} else if (rhs && is_glob) {
goto invalid;
}
return parse_refspec_internal(nr_refspec, refspec, 0, 0);
}
+void free_refspec(int nr_refspec, struct refspec *refspec)
+{
+ int i;
+ for (i = 0; i < nr_refspec; i++) {
+ free(refspec[i].src);
+ free(refspec[i].dst);
+ }
+ free(refspec);
+}
+
static int valid_remote_nick(const char *name)
{
if (!name[0] || is_dot_or_dotdot(name))
ret = make_remote(name, 0);
if (valid_remote_nick(name)) {
- if (!ret->url)
+ if (!valid_remote(ret))
read_remotes_file(ret);
- if (!ret->url)
+ if (!valid_remote(ret))
read_branches_file(ret);
}
- if (name_given && !ret->url)
+ if (name_given && !valid_remote(ret))
add_url_alias(ret, name);
- if (!ret->url)
+ if (!valid_remote(ret))
return NULL;
ret->fetch = parse_fetch_refspec(ret->fetch_refspec_nr, ret->fetch_refspec);
ret->push = parse_push_refspec(ret->push_refspec_nr, ret->push_refspec);
return ret;
}
+int remote_is_configured(const char *name)
+{
+ int i;
+ read_config();
+
+ for (i = 0; i < remotes_nr; i++)
+ if (!strcmp(name, remotes[i]->name))
+ return 1;
+ return 0;
+}
+
int for_each_remote(each_remote_fn fn, void *priv)
{
int i, result = 0;
void ref_remove_duplicates(struct ref *ref_map)
{
- struct ref **posn;
- struct ref *next;
- for (; ref_map; ref_map = ref_map->next) {
+ struct string_list refs = { NULL, 0, 0, 0 };
+ struct string_list_item *item = NULL;
+ struct ref *prev = NULL, *next = NULL;
+ for (; ref_map; prev = ref_map, ref_map = next) {
+ next = ref_map->next;
if (!ref_map->peer_ref)
continue;
- posn = &ref_map->next;
- while (*posn) {
- if ((*posn)->peer_ref &&
- !strcmp((*posn)->peer_ref->name,
- ref_map->peer_ref->name)) {
- if (strcmp((*posn)->name, ref_map->name))
- die("%s tracks both %s and %s",
- ref_map->peer_ref->name,
- (*posn)->name, ref_map->name);
- next = (*posn)->next;
- free((*posn)->peer_ref);
- free(*posn);
- *posn = next;
- } else {
- posn = &(*posn)->next;
- }
+
+ item = string_list_lookup(ref_map->peer_ref->name, &refs);
+ if (item) {
+ if (strcmp(((struct ref *)item->util)->name,
+ ref_map->name))
+ die("%s tracks both %s and %s",
+ ref_map->peer_ref->name,
+ ((struct ref *)item->util)->name,
+ ref_map->name);
+ prev->next = ref_map->next;
+ free(ref_map->peer_ref);
+ free(ref_map);
+ ref_map = prev; /* skip this; we freed it */
+ continue;
}
+
+ item = string_list_insert(ref_map->peer_ref->name, &refs);
+ item->util = ref_map;
}
+ string_list_clear(&refs, 0);
}
int remote_has_url(struct remote *remote, const char *url)
return 0;
}
+static int match_name_with_pattern(const char *key, const char *name,
+ const char *value, char **result)
+{
+ const char *kstar = strchr(key, '*');
+ size_t klen;
+ size_t ksuffixlen;
+ size_t namelen;
+ int ret;
+ if (!kstar)
+ die("Key '%s' of pattern had no '*'", key);
+ klen = kstar - key;
+ ksuffixlen = strlen(kstar + 1);
+ namelen = strlen(name);
+ ret = !strncmp(name, key, klen) && namelen >= klen + ksuffixlen &&
+ !memcmp(name + namelen - ksuffixlen, kstar + 1, ksuffixlen);
+ if (ret && value) {
+ const char *vstar = strchr(value, '*');
+ size_t vlen;
+ size_t vsuffixlen;
+ if (!vstar)
+ die("Value '%s' of pattern has no '*'", value);
+ vlen = vstar - value;
+ vsuffixlen = strlen(vstar + 1);
+ *result = xmalloc(vlen + vsuffixlen +
+ strlen(name) -
+ klen - ksuffixlen + 1);
+ strncpy(*result, value, vlen);
+ strncpy(*result + vlen,
+ name + klen, namelen - klen - ksuffixlen);
+ strcpy(*result + vlen + namelen - klen - ksuffixlen,
+ vstar + 1);
+ }
+ return ret;
+}
+
+char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
+ const char *name)
+{
+ int i;
+ char *ret = NULL;
+ for (i = 0; i < nr_refspec; i++) {
+ struct refspec *refspec = refspecs + i;
+ if (refspec->pattern) {
+ if (match_name_with_pattern(refspec->src, name,
+ refspec->dst, &ret))
+ return ret;
+ } else if (!strcmp(refspec->src, name))
+ return strdup(refspec->dst);
+ }
+ return NULL;
+}
+
int remote_find_tracking(struct remote *remote, struct refspec *refspec)
{
int find_src = refspec->src == NULL;
if (!fetch->dst)
continue;
if (fetch->pattern) {
- if (!prefixcmp(needle, key)) {
- *result = xmalloc(strlen(value) +
- strlen(needle) -
- strlen(key) + 1);
- strcpy(*result, value);
- strcpy(*result + strlen(value),
- needle + strlen(key));
+ if (match_name_with_pattern(key, needle, value, result)) {
refspec->force = fetch->force;
return 0;
}
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)
{
if (!ref)
return;
+ free_ref(ref->peer_ref);
free(ref->remote_status);
free(ref->symref);
free(ref);
struct ref *next;
while (ref) {
next = ref->next;
- free(ref->peer_ref);
free_ref(ref);
ref = next;
}
struct refspec *rs)
{
struct ref *matched_src, *matched_dst;
+ int copy_src;
const char *dst_value = rs->dst;
char *dst_guess;
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
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);
case 0:
if (!memcmp(dst_value, "refs/", 5))
matched_dst = make_linked_ref(dst_value, dst_tail);
- else if((dst_guess = guess_ref(dst_value, matched_src)))
+ else if ((dst_guess = guess_ref(dst_value, matched_src)))
matched_dst = make_linked_ref(dst_guess, dst_tail);
else
error("unable to push to unqualified destination: %s\n"
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;
continue;
}
- if (rs[i].pattern && !prefixcmp(src->name, rs[i].src))
+ if (rs[i].pattern && match_name_with_pattern(rs[i].src, src->name,
+ NULL, NULL))
return rs + i;
}
if (matching_refs != -1)
return NULL;
}
+static struct ref **tail_ref(struct ref **head)
+{
+ struct ref **tail = head;
+ while (*tail)
+ tail = &((*tail)->next);
+ return tail;
+}
+
/*
* Note. This is used only by "push"; refspec matching rules for
* push and fetch are subtly different, so do not try to reuse it
* without thinking.
*/
-int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
+int match_refs(struct ref *src, struct ref **dst,
int nr_refspec, const char **refspec, int flags)
{
struct refspec *rs;
int send_all = flags & MATCH_REFS_ALL;
int send_mirror = flags & MATCH_REFS_MIRROR;
- static const char *default_refspec[] = { ":", 0 };
+ int errs;
+ static const char *default_refspec[] = { ":", NULL };
+ struct ref **dst_tail = tail_ref(dst);
if (!nr_refspec) {
nr_refspec = 1;
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) {
} else {
const char *dst_side = pat->dst ? pat->dst : pat->src;
- dst_name = xmalloc(strlen(dst_side) +
- strlen(src->name) -
- strlen(pat->src) + 2);
- strcpy(dst_name, dst_side);
- strcat(dst_name, src->name + strlen(pat->src));
+ if (!match_name_with_pattern(pat->src, src->name,
+ dst_side, &dst_name))
+ die("Didn't think it matches any more");
}
- dst_peer = find_ref_by_name(dst, dst_name);
+ dst_peer = find_ref_by_name(*dst, dst_name);
if (dst_peer) {
if (dst_peer->peer_ref)
/* We're already sending something to this ref. */
goto free_name;
/* Create a new one and link it */
- dst_peer = make_linked_ref(dst_name, 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;
}
+void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
+ int force_update)
+{
+ struct ref *ref;
+
+ for (ref = remote_refs; ref; ref = ref->next) {
+ if (ref->peer_ref)
+ hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
+ else if (!send_mirror)
+ continue;
+
+ ref->deletion = is_null_sha1(ref->new_sha1);
+ if (!ref->deletion &&
+ !hashcmp(ref->old_sha1, ref->new_sha1)) {
+ ref->status = REF_STATUS_UPTODATE;
+ continue;
+ }
+
+ /* This part determines what can overwrite what.
+ * The rules are:
+ *
+ * (0) you can always use --force or +A:B notation to
+ * selectively force individual ref pairs.
+ *
+ * (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.
+ *
+ * (4) regardless of all of the above, removing :B is
+ * always allowed.
+ */
+
+ ref->nonfastforward =
+ !ref->deletion &&
+ !is_null_sha1(ref->old_sha1) &&
+ (!has_sha1_file(ref->old_sha1)
+ || !ref_newer(ref->new_sha1, ref->old_sha1));
+
+ if (ref->nonfastforward && !ref->force && !force_update) {
+ ref->status = REF_STATUS_REJECT_NONFASTFORWARD;
+ continue;
+ }
+ }
+}
+
struct branch *branch_get(const char *name)
{
struct branch *ret;
for (i = 0; i < ret->merge_nr; i++) {
ret->merge[i] = xcalloc(1, sizeof(**ret->merge));
ret->merge[i]->src = xstrdup(ret->merge_name[i]);
- remote_find_tracking(ret->remote,
- ret->merge[i]);
+ if (remote_find_tracking(ret->remote, ret->merge[i])
+ && !strcmp(ret->remote_name, "."))
+ ret->merge[i]->dst = xstrdup(ret->merge_name[i]);
}
}
}
struct ref *ret = NULL;
struct ref **tail = &ret;
- int remote_prefix_len = strlen(refspec->src);
- int local_prefix_len = strlen(refspec->dst);
+ char *expn_name;
for (ref = remote_refs; ref; ref = ref->next) {
if (strchr(ref->name, '^'))
continue; /* a dereference item */
- if (!prefixcmp(ref->name, refspec->src)) {
- const char *match;
+ if (match_name_with_pattern(refspec->src, ref->name,
+ refspec->dst, &expn_name)) {
struct ref *cpy = copy_ref(ref);
- match = ref->name + remote_prefix_len;
- cpy->peer_ref = alloc_ref_with_prefix(refspec->dst,
- local_prefix_len, match);
+ cpy->peer_ref = alloc_ref(expn_name);
+ free(expn_name);
if (refspec->force)
cpy->peer_ref->force = 1;
*tail = cpy;
static struct ref *get_local_ref(const char *name)
{
- if (!name)
+ if (!name || name[0] == '\0')
return NULL;
if (!prefixcmp(name, "refs/"))
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.
*/
base = branch->merge[0]->dst;
if (!resolve_ref(base, sha1, 1, NULL))
return 0;
- theirs = lookup_commit(sha1);
+ theirs = lookup_commit_reference(sha1);
if (!theirs)
return 0;
if (!resolve_ref(branch->refname, sha1, 1, NULL))
return 0;
- ours = lookup_commit(sha1);
+ ours = lookup_commit_reference(sha1);
if (!ours)
return 0;
return 0;
base = branch->merge[0]->dst;
- if (!prefixcmp(base, "refs/remotes/")) {
- base += strlen("refs/remotes/");
- }
+ base = shorten_unambiguous_ref(base, 0);
if (!num_theirs)
strbuf_addf(sb, "Your branch is ahead of '%s' "
"by %d commit%s.\n",
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 = NULL, **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;
+}
+
+struct stale_heads_info {
+ struct remote *remote;
+ struct string_list *ref_names;
+ struct ref **stale_refs_tail;
+};
+
+static int get_stale_heads_cb(const char *refname,
+ const unsigned char *sha1, int flags, void *cb_data)
+{
+ struct stale_heads_info *info = cb_data;
+ struct refspec refspec;
+ memset(&refspec, 0, sizeof(refspec));
+ refspec.dst = (char *)refname;
+ if (!remote_find_tracking(info->remote, &refspec)) {
+ if (!((flags & REF_ISSYMREF) ||
+ string_list_has_string(info->ref_names, refspec.src))) {
+ struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail);
+ hashcpy(ref->new_sha1, sha1);
+ }
+ }
+ return 0;
+}
+
+struct ref *get_stale_heads(struct remote *remote, struct ref *fetch_map)
+{
+ struct ref *ref, *stale_refs = NULL;
+ struct string_list ref_names = { NULL, 0, 0, 0 };
+ struct stale_heads_info info;
+ info.remote = remote;
+ info.ref_names = &ref_names;
+ info.stale_refs_tail = &stale_refs;
+ for (ref = fetch_map; ref; ref = ref->next)
+ string_list_append(ref->name, &ref_names);
+ sort_string_list(&ref_names);
+ for_each_ref(get_stale_heads_cb, &info);
+ string_list_clear(&ref_names, 0);
+ return stale_refs;
+}