*/
#include "cache.h"
+#include "hashmap.h"
#include "lockfile.h"
#include "refs.h"
#include "refs/refs-internal.h"
return 0;
}
-int delete_ref(const char *refname, const unsigned char *old_sha1,
- unsigned int flags)
+int delete_ref(const char *msg, const char *refname,
+ const unsigned char *old_sha1, unsigned int flags)
{
struct ref_transaction *transaction;
struct strbuf err = STRBUF_INIT;
transaction = ref_transaction_begin(&err);
if (!transaction ||
ref_transaction_delete(transaction, refname, old_sha1,
- flags, NULL, &err) ||
+ flags, msg, &err) ||
ref_transaction_commit(transaction, &err)) {
error("%s", err.buf);
ref_transaction_free(transaction);
int should_autocreate_reflog(const char *refname)
{
- if (!log_all_ref_updates)
+ switch (log_all_ref_updates) {
+ case LOG_REFS_ALWAYS:
+ return 1;
+ case LOG_REFS_NORMAL:
+ return starts_with(refname, "refs/heads/") ||
+ starts_with(refname, "refs/remotes/") ||
+ starts_with(refname, "refs/notes/") ||
+ !strcmp(refname, "HEAD");
+ default:
return 0;
- return starts_with(refname, "refs/heads/") ||
- starts_with(refname, "refs/remotes/") ||
- starts_with(refname, "refs/notes/") ||
- !strcmp(refname, "HEAD");
+ }
}
int is_branch(const char *refname)
}
/* This function needs to return a meaningful errno on failure */
-static const char *resolve_ref_recursively(struct ref_store *refs,
- const char *refname,
- int resolve_flags,
- unsigned char *sha1, int *flags)
+const char *resolve_ref_recursively(struct ref_store *refs,
+ const char *refname,
+ int resolve_flags,
+ unsigned char *sha1, int *flags)
{
static struct strbuf sb_refname = STRBUF_INIT;
int unused_flags;
return 0;
}
+struct submodule_hash_entry
+{
+ struct hashmap_entry ent; /* must be the first member! */
+
+ struct ref_store *refs;
+
+ /* NUL-terminated name of submodule: */
+ char submodule[FLEX_ARRAY];
+};
+
+static int submodule_hash_cmp(const void *entry, const void *entry_or_key,
+ const void *keydata)
+{
+ const struct submodule_hash_entry *e1 = entry, *e2 = entry_or_key;
+ const char *submodule = keydata ? keydata : e2->submodule;
+
+ return strcmp(e1->submodule, submodule);
+}
+
+static struct submodule_hash_entry *alloc_submodule_hash_entry(
+ const char *submodule, struct ref_store *refs)
+{
+ struct submodule_hash_entry *entry;
+
+ FLEX_ALLOC_STR(entry, submodule, submodule);
+ hashmap_entry_init(entry, strhash(submodule));
+ entry->refs = refs;
+ return entry;
+}
+
/* A pointer to the ref_store for the main repository: */
static struct ref_store *main_ref_store;
-/* A linked list of ref_stores for submodules: */
-static struct ref_store *submodule_ref_stores;
+/* A hashmap of ref_stores, stored by submodule name: */
+static struct hashmap submodule_ref_stores;
-void base_ref_store_init(struct ref_store *refs,
- const struct ref_storage_be *be,
- const char *submodule)
+/*
+ * Return the ref_store instance for the specified submodule (or the
+ * main repository if submodule is NULL). If that ref_store hasn't
+ * been initialized yet, return NULL.
+ */
+static struct ref_store *lookup_ref_store(const char *submodule)
+{
+ struct submodule_hash_entry *entry;
+
+ if (!submodule)
+ return main_ref_store;
+
+ if (!submodule_ref_stores.tablesize)
+ /* It's initialized on demand in register_ref_store(). */
+ return NULL;
+
+ entry = hashmap_get_from_hash(&submodule_ref_stores,
+ strhash(submodule), submodule);
+ return entry ? entry->refs : NULL;
+}
+
+/*
+ * Register the specified ref_store to be the one that should be used
+ * for submodule (or the main repository if submodule is NULL). It is
+ * a fatal error to call this function twice for the same submodule.
+ */
+static void register_ref_store(struct ref_store *refs, const char *submodule)
{
- refs->be = be;
if (!submodule) {
if (main_ref_store)
die("BUG: main_ref_store initialized twice");
- refs->submodule = "";
- refs->next = NULL;
main_ref_store = refs;
} else {
- if (lookup_ref_store(submodule))
+ if (!submodule_ref_stores.tablesize)
+ hashmap_init(&submodule_ref_stores, submodule_hash_cmp, 0);
+
+ if (hashmap_put(&submodule_ref_stores,
+ alloc_submodule_hash_entry(submodule, refs)))
die("BUG: ref_store for submodule '%s' initialized twice",
submodule);
-
- refs->submodule = xstrdup(submodule);
- refs->next = submodule_ref_stores;
- submodule_ref_stores = refs;
}
}
-struct ref_store *ref_store_init(const char *submodule)
+/*
+ * Create, record, and return a ref_store instance for the specified
+ * submodule (or the main repository if submodule is NULL).
+ */
+static struct ref_store *ref_store_init(const char *submodule)
{
const char *be_name = "files";
struct ref_storage_be *be = find_ref_storage_backend(be_name);
+ struct ref_store *refs;
if (!be)
die("BUG: reference backend %s is unknown", be_name);
- if (!submodule || !*submodule)
- return be->init(NULL);
- else
- return be->init(submodule);
-}
-
-struct ref_store *lookup_ref_store(const char *submodule)
-{
- struct ref_store *refs;
-
- if (!submodule || !*submodule)
- return main_ref_store;
-
- for (refs = submodule_ref_stores; refs; refs = refs->next) {
- if (!strcmp(submodule, refs->submodule))
- return refs;
- }
-
- return NULL;
+ refs = be->init(submodule);
+ register_ref_store(refs, submodule);
+ return refs;
}
struct ref_store *get_ref_store(const char *submodule)
return refs;
}
-void assert_main_repository(struct ref_store *refs, const char *caller)
+void base_ref_store_init(struct ref_store *refs,
+ const struct ref_storage_be *be)
{
- if (*refs->submodule)
- die("BUG: %s called for a submodule", caller);
+ refs->be = be;
}
/* backend functions */