Merge tag 'debian/0.29.3-1'

[notmuch] / lib / config.cc

diff --git a/lib/config.cc b/lib/config.cc
index 9ca74bf58b816331244f54953b34ede069d12d20..292f0288d7ef2f95e171efe9bf63b4bd8fe42c64 100644 (file)
--- a/lib/config.cc
+++ b/lib/config.cc
@@ -13,7 +13,7 @@
  * 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>
  */
@@ -24,6 +24,21 @@
 
 static const std::string CONFIG_PREFIX = "C";
 
+struct _notmuch_config_list {
+    notmuch_database_t *notmuch;
+    Xapian::TermIterator iterator;
+    char *current_key;
+    char *current_val;
+};
+
+static int
+_notmuch_config_list_destroy (notmuch_config_list_t *list)
+{
+    /* invoke destructor w/o deallocating memory */
+    list->iterator.~TermIterator();
+    return 0;
+}
+
 notmuch_status_t
 notmuch_database_set_config (notmuch_database_t *notmuch,
                             const char *key,
@@ -41,9 +56,9 @@ notmuch_database_set_config (notmuch_database_t *notmuch,
        db->set_metadata (CONFIG_PREFIX + key, value);
     } catch (const Xapian::Error &error) {
        status = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
-       notmuch->exception_reported = TRUE;
+       notmuch->exception_reported = true;
        _notmuch_database_log (notmuch, "Error: A Xapian exception occurred setting metadata: %s\n",
-                              error.get_msg().c_str());
+                              error.get_msg ().c_str ());
     }
     return NOTMUCH_STATUS_SUCCESS;
 }
@@ -59,9 +74,9 @@ _metadata_value (notmuch_database_t *notmuch,
        value = notmuch->xapian_db->get_metadata (CONFIG_PREFIX + key);
     } catch (const Xapian::Error &error) {
        status = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
-       notmuch->exception_reported = TRUE;
+       notmuch->exception_reported = true;
        _notmuch_database_log (notmuch, "Error: A Xapian exception occurred getting metadata: %s\n",
-                              error.get_msg().c_str());
+                              error.get_msg ().c_str ());
     }
     return status;
 }
@@ -85,3 +100,99 @@ notmuch_database_get_config (notmuch_database_t *notmuch,
 
     return NOTMUCH_STATUS_SUCCESS;
 }
+
+notmuch_status_t
+notmuch_database_get_config_list (notmuch_database_t *notmuch,
+                                 const char *prefix,
+                                 notmuch_config_list_t **out)
+{
+    notmuch_config_list_t *list = NULL;
+    notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
+
+    list = talloc (notmuch, notmuch_config_list_t);
+    if (! list) {
+       status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+       goto DONE;
+    }
+
+    talloc_set_destructor (list, _notmuch_config_list_destroy);
+    list->notmuch = notmuch;
+    list->current_key = NULL;
+    list->current_val = NULL;
+
+    try {
+
+       new(&(list->iterator)) Xapian::TermIterator (notmuch->xapian_db->metadata_keys_begin
+                                                        (CONFIG_PREFIX + (prefix ? prefix : "")));
+
+    } catch (const Xapian::Error &error) {
+       _notmuch_database_log (notmuch, "A Xapian exception occurred getting metadata iterator: %s.\n",
+                              error.get_msg ().c_str ());
+       notmuch->exception_reported = true;
+       status = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
+    }
+
+    *out = list;
+
+  DONE:
+    if (status && list)
+       talloc_free (list);
+
+    return status;
+}
+
+notmuch_bool_t
+notmuch_config_list_valid (notmuch_config_list_t *metadata)
+{
+    if (metadata->iterator == metadata->notmuch->xapian_db->metadata_keys_end ())
+       return false;
+
+    return true;
+}
+
+static inline char * _key_from_iterator (notmuch_config_list_t *list) {
+    return talloc_strdup (list, (*list->iterator).c_str () + CONFIG_PREFIX.length ());
+}
+
+const char *
+notmuch_config_list_key (notmuch_config_list_t *list)
+{
+    if (list->current_key)
+       talloc_free (list->current_key);
+
+    list->current_key = _key_from_iterator (list);
+
+    return list->current_key;
+}
+
+const char *
+notmuch_config_list_value (notmuch_config_list_t *list)
+{
+    std::string strval;
+    notmuch_status_t status;
+    char *key = _key_from_iterator (list);
+
+    /* TODO: better error reporting?? */
+    status = _metadata_value (list->notmuch, key, strval);
+    if (status)
+       return NULL;
+
+    if (list->current_val)
+       talloc_free (list->current_val);
+
+    list->current_val = talloc_strdup (list, strval.c_str ());
+    talloc_free (key);
+    return list->current_val;
+}
+
+void
+notmuch_config_list_move_to_next (notmuch_config_list_t *list)
+{
+    list->iterator++;
+}
+
+void
+notmuch_config_list_destroy (notmuch_config_list_t *list)
+{
+    talloc_free (list);
+}