#include "dir.h"
#include "tag.h"
#include "string-list.h"
+#include "mergesort.h"
+
+enum map_direction { FROM_SRC, FROM_DST };
static struct refspec s_tag_refspec = {
0,
}
}
+int ref_compare_name(const void *va, const void *vb)
+{
+ const struct ref *a = va, *b = vb;
+ return strcmp(a->name, b->name);
+}
+
+static void *ref_list_get_next(const void *a)
+{
+ return ((const struct ref *)a)->next;
+}
+
+static void ref_list_set_next(void *a, void *next)
+{
+ ((struct ref *)a)->next = next;
+}
+
+void sort_ref_list(struct ref **l, int (*cmp)(const void *, const void *))
+{
+ *l = llist_mergesort(*l, ref_list_get_next, ref_list_set_next, cmp);
+}
+
static int count_refspec_match(const char *pattern,
struct ref *refs,
struct ref **matched_ref)
*tail = &ref->next;
}
+static struct ref *alloc_delete_ref(void)
+{
+ struct ref *ref = alloc_ref("(delete)");
+ hashclr(ref->new_sha1);
+ return ref;
+}
+
static struct ref *try_explicit_object_name(const char *name)
{
unsigned char sha1[20];
struct ref *ref;
- if (!*name) {
- ref = alloc_ref("(delete)");
- hashclr(ref->new_sha1);
- return ref;
- }
+ if (!*name)
+ return alloc_delete_ref();
if (get_sha1(name, sha1))
return NULL;
ref = alloc_ref(name);
case 0:
if (!memcmp(dst_value, "refs/", 5))
matched_dst = make_linked_ref(dst_value, dst_tail);
+ else if (is_null_sha1(matched_src->new_sha1))
+ error("unable to delete '%s': remote ref does not exist",
+ dst_value);
else if ((dst_guess = guess_ref(dst_value, matched_src)))
matched_dst = make_linked_ref(dst_guess, dst_tail);
else
return errs;
}
-static const struct refspec *check_pattern_match(const struct refspec *rs,
- int rs_nr,
- const struct ref *src)
+static char *get_ref_match(const struct refspec *rs, int rs_nr, const struct ref *ref,
+ int send_mirror, int direction, const struct refspec **ret_pat)
{
+ const struct refspec *pat;
+ char *name;
int i;
int matching_refs = -1;
for (i = 0; i < rs_nr; i++) {
continue;
}
- if (rs[i].pattern && match_name_with_pattern(rs[i].src, src->name,
- NULL, NULL))
- return rs + i;
+ if (rs[i].pattern) {
+ const char *dst_side = rs[i].dst ? rs[i].dst : rs[i].src;
+ int match;
+ if (direction == FROM_SRC)
+ match = match_name_with_pattern(rs[i].src, ref->name, dst_side, &name);
+ else
+ match = match_name_with_pattern(dst_side, ref->name, rs[i].src, &name);
+ if (match) {
+ matching_refs = i;
+ break;
+ }
+ }
}
- if (matching_refs != -1)
- return rs + matching_refs;
- else
+ if (matching_refs == -1)
return NULL;
+
+ pat = rs + matching_refs;
+ if (pat->matching) {
+ /*
+ * "matching refs"; traditionally we pushed everything
+ * including refs outside refs/heads/ hierarchy, but
+ * that does not make much sense these days.
+ */
+ if (!send_mirror && prefixcmp(ref->name, "refs/heads/"))
+ return NULL;
+ name = xstrdup(ref->name);
+ }
+ if (ret_pat)
+ *ret_pat = pat;
+ return name;
}
static struct ref **tail_ref(struct ref **head)
struct refspec *rs;
int send_all = flags & MATCH_REFS_ALL;
int send_mirror = flags & MATCH_REFS_MIRROR;
+ int send_prune = flags & MATCH_REFS_PRUNE;
int errs;
static const char *default_refspec[] = { ":", NULL };
- struct ref **dst_tail = tail_ref(dst);
+ struct ref *ref, **dst_tail = tail_ref(dst);
if (!nr_refspec) {
nr_refspec = 1;
errs = match_explicit_refs(src, *dst, &dst_tail, rs, nr_refspec);
/* pick the remainder */
- for ( ; src; src = src->next) {
+ for (ref = src; ref; ref = ref->next) {
struct ref *dst_peer;
const struct refspec *pat = NULL;
char *dst_name;
- if (src->peer_ref)
- continue;
- pat = check_pattern_match(rs, nr_refspec, src);
- if (!pat)
+ if (ref->peer_ref)
continue;
- if (pat->matching) {
- /*
- * "matching refs"; traditionally we pushed everything
- * including refs outside refs/heads/ hierarchy, but
- * that does not make much sense these days.
- */
- if (!send_mirror && prefixcmp(src->name, "refs/heads/"))
- continue;
- dst_name = xstrdup(src->name);
+ dst_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_SRC, &pat);
+ if (!dst_name)
+ continue;
- } else {
- const char *dst_side = pat->dst ? pat->dst : 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);
if (dst_peer) {
if (dst_peer->peer_ref)
/* We're already sending something to this ref. */
goto free_name;
-
} else {
if (pat->matching && !(send_all || send_mirror))
/*
/* Create a new one and link it */
dst_peer = make_linked_ref(dst_name, &dst_tail);
- hashcpy(dst_peer->new_sha1, src->new_sha1);
+ hashcpy(dst_peer->new_sha1, ref->new_sha1);
}
- dst_peer->peer_ref = copy_ref(src);
+ dst_peer->peer_ref = copy_ref(ref);
dst_peer->force = pat->force;
free_name:
free(dst_name);
}
+ if (send_prune) {
+ /* check for missing refs on the remote */
+ for (ref = *dst; ref; ref = ref->next) {
+ char *src_name;
+
+ if (ref->peer_ref)
+ /* We're already sending something to this ref. */
+ continue;
+
+ src_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_DST, NULL);
+ if (src_name) {
+ if (!find_ref_by_name(src, src_name))
+ ref->peer_ref = alloc_delete_ref();
+ free(src_name);
+ }
+ }
+ }
if (errs)
return -1;
return 0;
}
+static inline int is_forwardable(struct ref* ref)
+{
+ struct object *o;
+
+ if (!prefixcmp(ref->name, "refs/tags/"))
+ return 0;
+
+ /* old object must be a commit */
+ o = parse_object(ref->old_sha1);
+ if (!o || o->type != OBJ_COMMIT)
+ return 0;
+
+ /* new object must be commit-ish */
+ o = deref_tag(parse_object(ref->new_sha1), NULL, 0);
+ if (!o || o->type != OBJ_COMMIT)
+ return 0;
+
+ return 1;
+}
+
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) {
+ int force_ref_update = ref->force || force_update;
+
if (ref->peer_ref)
hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
else if (!send_mirror)
continue;
}
- /* This part determines what can overwrite what.
- * The rules are:
+ /*
+ * The below logic determines whether an individual
+ * refspec A:B can be pushed. The push will succeed
+ * if any of the following are true:
+ *
+ * (1) the remote reference B does not exist
*
- * (0) you can always use --force or +A:B notation to
- * selectively force individual ref pairs.
+ * (2) the remote reference B is being removed (i.e.,
+ * pushing :B where no source is specified)
*
- * (1) if the old thing does not exist, it is OK.
+ * (3) the update meets all fast-forwarding criteria:
*
- * (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.
+ * (a) the destination is not under refs/tags/
+ * (b) the old is a commit
+ * (c) the new is a descendant of the old
*
- * (3) if both new and old are commit-ish, and new is a
- * descendant of old, it is OK.
+ * NOTE: We must actually have the old object in
+ * order to overwrite it in the remote reference,
+ * and the new object must be commit-ish. These are
+ * implied by (b) and (c) respectively.
*
- * (4) regardless of all of the above, removing :B is
- * always allowed.
+ * (4) it is forced using the +A:B notation, or by
+ * passing the --force argument
*/
- ref->nonfastforward =
- !ref->deletion &&
- !is_null_sha1(ref->old_sha1) &&
- (!has_sha1_file(ref->old_sha1)
- || !ref_newer(ref->new_sha1, ref->old_sha1));
+ ref->not_forwardable = !is_forwardable(ref);
- if (ref->nonfastforward && !ref->force && !force_update) {
- ref->status = REF_STATUS_REJECT_NONFASTFORWARD;
- continue;
+ ref->update =
+ !ref->deletion &&
+ !is_null_sha1(ref->old_sha1);
+
+ if (ref->update) {
+ ref->nonfastforward =
+ !has_sha1_file(ref->old_sha1)
+ || !ref_newer(ref->new_sha1, ref->old_sha1);
+
+ if (ref->not_forwardable) {
+ ref->requires_force = 1;
+ if (!force_ref_update) {
+ ref->status = REF_STATUS_REJECT_ALREADY_EXISTS;
+ continue;
+ }
+ } else if (ref->nonfastforward) {
+ ref->requires_force = 1;
+ if (!force_ref_update) {
+ ref->status = REF_STATUS_REJECT_NONFASTFORWARD;
+ continue;
+ }
+ }
}
}
}
return refname_match(branch->merge[i]->src, refname, ref_fetch_rules);
}
+static int ignore_symref_update(const char *refname)
+{
+ unsigned char sha1[20];
+ int flag;
+
+ if (!resolve_ref_unsafe(refname, sha1, 0, &flag))
+ return 0; /* non-existing refs are OK */
+ return (flag & REF_ISSYMREF);
+}
+
static struct ref *get_expanded_map(const struct ref *remote_refs,
const struct refspec *refspec)
{
if (strchr(ref->name, '^'))
continue; /* a dereference item */
if (match_name_with_pattern(refspec->src, ref->name,
- refspec->dst, &expn_name)) {
+ refspec->dst, &expn_name) &&
+ !ignore_symref_update(expn_name)) {
struct ref *cpy = copy_ref(ref);
cpy->peer_ref = alloc_ref(expn_name);
for (rmp = &ref_map; *rmp; ) {
if ((*rmp)->peer_ref) {
- if (check_refname_format((*rmp)->peer_ref->name + 5,
- REFNAME_ALLOW_ONELEVEL)) {
+ if (prefixcmp((*rmp)->peer_ref->name, "refs/") ||
+ check_refname_format((*rmp)->peer_ref->name, 0)) {
struct ref *ignore = *rmp;
error("* Ignoring funny ref '%s' locally",
(*rmp)->peer_ref->name);
base = branch->merge[0]->dst;
base = shorten_unambiguous_ref(base, 0);
- if (!num_theirs)
+ if (!num_theirs) {
strbuf_addf(sb,
Q_("Your branch is ahead of '%s' by %d commit.\n",
"Your branch is ahead of '%s' by %d commits.\n",
num_ours),
base, num_ours);
- else if (!num_ours)
+ if (advice_status_hints)
+ strbuf_addf(sb,
+ _(" (use \"git push\" to publish your local commits)\n"));
+ } else if (!num_ours) {
strbuf_addf(sb,
Q_("Your branch is behind '%s' by %d commit, "
"and can be fast-forwarded.\n",
"and can be fast-forwarded.\n",
num_theirs),
base, num_theirs);
- else
+ if (advice_status_hints)
+ strbuf_addf(sb,
+ _(" (use \"git pull\" to update your local branch)\n"));
+ } else {
strbuf_addf(sb,
Q_("Your branch and '%s' have diverged,\n"
"and have %d and %d different commit each, "
"respectively.\n",
num_theirs),
base, num_ours, num_theirs);
+ if (advice_status_hints)
+ strbuf_addf(sb,
+ _(" (use \"git pull\" to merge the remote branch into yours)\n"));
+ }
return 1;
}