last = ch;
}
if (cp == refname)
- return -1; /* Component has zero length. */
+ return 0; /* Component has zero length. */
if (refname[0] == '.') {
if (!(flags & REFNAME_DOT_COMPONENT))
return -1; /* Component starts with '.'. */
while (1) {
/* We are at the start of a path component. */
component_len = check_refname_component(refname, flags);
- if (component_len < 0) {
+ if (component_len <= 0) {
if ((flags & REFNAME_REFSPEC_PATTERN) &&
refname[0] == '*' &&
(refname[1] == '\0' || refname[1] == '/')) {
return ref;
}
+static void free_ref_entry(struct ref_entry *entry)
+{
+ free(entry);
+}
+
/* Add a ref_entry to the end of the ref_array (unsorted). */
static void add_ref(struct ref_array *refs, struct ref_entry *ref)
{
{
int i;
for (i = 0; i < array->nr; i++)
- free(array->refs[i]);
+ free_ref_entry(array->refs[i]);
free(array->refs);
array->sorted = array->nr = array->alloc = 0;
array->refs = NULL;
i = 0;
for (j = 1; j < array->nr; j++) {
if (is_dup_ref(array->refs[i], array->refs[j])) {
- free(array->refs[j]);
+ free_ref_entry(array->refs[j]);
continue;
}
array->refs[++i] = array->refs[j];
*/
static int names_conflict(const char *refname1, const char *refname2)
{
- int len1 = strlen(refname1);
- int len2 = strlen(refname2);
- int cmplen;
- const char *lead;
+ for (; *refname1 && *refname1 == *refname2; refname1++, refname2++)
+ ;
+ return (*refname1 == '\0' && *refname2 == '/')
+ || (*refname1 == '/' && *refname2 == '\0');
+}
- if (len1 < len2) {
- cmplen = len1;
- lead = refname2;
- } else {
- cmplen = len2;
- lead = refname1;
+struct name_conflict_cb {
+ const char *refname;
+ const char *oldrefname;
+ const char *conflicting_refname;
+};
+
+static int name_conflict_fn(const char *existingrefname, const unsigned char *sha1,
+ int flags, void *cb_data)
+{
+ struct name_conflict_cb *data = (struct name_conflict_cb *)cb_data;
+ if (data->oldrefname && !strcmp(data->oldrefname, existingrefname))
+ return 0;
+ if (names_conflict(data->refname, existingrefname)) {
+ data->conflicting_refname = existingrefname;
+ return 1;
}
- return !strncmp(refname1, refname2, cmplen) && lead[cmplen] == '/';
+ return 0;
}
/*
* Return true iff a reference named refname could be created without
- * conflicting with the name of an existing reference. If oldrefname
- * is non-NULL, ignore potential conflicts with oldrefname (e.g.,
- * because oldrefname is scheduled for deletion in the same
+ * conflicting with the name of an existing reference in array. If
+ * oldrefname is non-NULL, ignore potential conflicts with oldrefname
+ * (e.g., because oldrefname is scheduled for deletion in the same
* operation).
*/
static int is_refname_available(const char *refname, const char *oldrefname,
struct ref_array *array)
{
- int i;
- for (i = 0; i < array->nr; i++) {
- struct ref_entry *entry = array->refs[i];
- if (oldrefname && !strcmp(oldrefname, entry->name))
- continue;
- if (names_conflict(refname, entry->name)) {
- error("'%s' exists; cannot create '%s'",
- entry->name, refname);
- return 0;
- }
+ struct name_conflict_cb data;
+ data.refname = refname;
+ data.oldrefname = oldrefname;
+ data.conflicting_refname = NULL;
+
+ sort_ref_array(array);
+ if (do_for_each_ref_in_array(array, 0, "", name_conflict_fn,
+ 0, DO_FOR_EACH_INCLUDE_BROKEN,
+ &data)) {
+ error("'%s' exists; cannot create '%s'",
+ data.conflicting_refname, refname);
+ return 0;
}
return 1;
}