Merge branch 'release'

[notmuch] / lib / string-map.c

diff --git a/lib/string-map.c b/lib/string-map.c
index 0491a10bf6a6be5206a320cef85f92bfebc94dad..a88404c734ff5a93ab98349bcc7913229bd19e47 100644 (file)
--- a/lib/string-map.c
+++ b/lib/string-map.c
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see http://www.gnu.org/licenses/ .
+ * along with this program.  If not, see https://www.gnu.org/licenses/ .
  *
  * Author: David Bremner <david@tethera.net>
  */
@@ -33,11 +33,17 @@ typedef struct _notmuch_string_pair_t {
 } notmuch_string_pair_t;
 
 struct _notmuch_string_map {
-    notmuch_bool_t sorted;
+    bool sorted;
     size_t length;
     notmuch_string_pair_t *pairs;
 };
 
+struct _notmuch_string_map_iterator {
+    notmuch_string_pair_t *current;
+    bool exact;
+    const char *key;
+};
+
 notmuch_string_map_t *
 _notmuch_string_map_create (const void *ctx)
 {
@@ -49,7 +55,7 @@ _notmuch_string_map_create (const void *ctx)
 
     map->length = 0;
     map->pairs = NULL;
-    map->sorted = TRUE;
+    map->sorted = true;
 
     return map;
 }
@@ -61,7 +67,7 @@ _notmuch_string_map_append (notmuch_string_map_t *map,
 {
 
     map->length++;
-    map->sorted = FALSE;
+    map->sorted = false;
 
     if (map->pairs)
        map->pairs = talloc_realloc (map, map->pairs, notmuch_string_pair_t, map->length + 1);
@@ -97,11 +103,11 @@ _notmuch_string_map_sort (notmuch_string_map_t *map)
 
     qsort (map->pairs, map->length, sizeof (notmuch_string_pair_t), cmppair);
 
-    map->sorted = TRUE;
+    map->sorted = true;
 }
 
-static notmuch_bool_t
-string_cmp (const char *a, const char *b, notmuch_bool_t exact)
+static int
+string_cmp (const char *a, const char *b, bool exact)
 {
     if (exact)
        return (strcmp (a, b));
@@ -110,7 +116,7 @@ string_cmp (const char *a, const char *b, notmuch_bool_t exact)
 }
 
 static notmuch_string_pair_t *
-bsearch_first (notmuch_string_pair_t *array, size_t len, const char *key, notmuch_bool_t exact)
+bsearch_first (notmuch_string_pair_t *array, size_t len, const char *key, bool exact)
 {
     size_t first = 0;
     size_t last = len - 1;
@@ -145,9 +151,78 @@ _notmuch_string_map_get (notmuch_string_map_t *map, const char *key)
     /* this means that calling append invalidates iterators */
     _notmuch_string_map_sort (map);
 
-    pair = bsearch_first (map->pairs, map->length, key, TRUE);
+    pair = bsearch_first (map->pairs, map->length, key, true);
     if (! pair)
        return NULL;
 
     return pair->value;
 }
+
+notmuch_string_map_iterator_t *
+_notmuch_string_map_iterator_create (notmuch_string_map_t *map, const char *key,
+                                    bool exact)
+{
+    notmuch_string_map_iterator_t *iter;
+
+    _notmuch_string_map_sort (map);
+
+    iter = talloc (map, notmuch_string_map_iterator_t);
+    if (unlikely (iter == NULL))
+       return NULL;
+
+    if (unlikely (talloc_reference (iter, map) == NULL))
+       return NULL;
+
+    iter->key = talloc_strdup (iter, key);
+    iter->exact = exact;
+    iter->current = bsearch_first (map->pairs, map->length, key, exact);
+    return iter;
+}
+
+bool
+_notmuch_string_map_iterator_valid (notmuch_string_map_iterator_t *iterator)
+{
+    if (iterator->current == NULL)
+       return false;
+
+    /* sentinel */
+    if (iterator->current->key == NULL)
+       return false;
+
+    return (0 == string_cmp (iterator->key, iterator->current->key, iterator->exact));
+
+}
+
+void
+_notmuch_string_map_iterator_move_to_next (notmuch_string_map_iterator_t *iterator)
+{
+
+    if (! _notmuch_string_map_iterator_valid (iterator))
+       return;
+
+    (iterator->current)++;
+}
+
+const char *
+_notmuch_string_map_iterator_key (notmuch_string_map_iterator_t *iterator)
+{
+    if (! _notmuch_string_map_iterator_valid (iterator))
+       return NULL;
+
+    return iterator->current->key;
+}
+
+const char *
+_notmuch_string_map_iterator_value (notmuch_string_map_iterator_t *iterator)
+{
+    if (! _notmuch_string_map_iterator_valid (iterator))
+       return NULL;
+
+    return iterator->current->value;
+}
+
+void
+_notmuch_string_map_iterator_destroy (notmuch_string_map_iterator_t *iterator)
+{
+    talloc_free (iterator);
+}