+/* message-property.cc - Properties are like tags, but (key,value) pairs.
+ * keys are allowed to repeat.
+ *
+ * This file is part of notmuch.
+ *
+ * Copyright © 2016 David Bremner
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * 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/ .
+ *
+ * Author: David Bremner <david@tethera.net>
+ */
+
+#include "notmuch-private.h"
+#include "database-private.h"
+#include "message-private.h"
+
+notmuch_status_t
+notmuch_message_get_property (notmuch_message_t *message, const char *key, const char **value)
+{
+ if (! value)
+ return NOTMUCH_STATUS_NULL_POINTER;
+
+ *value = _notmuch_string_map_get (_notmuch_message_property_map (message), key);
+
+ return NOTMUCH_STATUS_SUCCESS;
+}
+
+static notmuch_status_t
+_notmuch_message_modify_property (notmuch_message_t *message, const char *key, const char *value,
+ notmuch_bool_t delete_it)
+{
+ notmuch_private_status_t private_status;
+ notmuch_status_t status;
+ char *term = NULL;
+
+ status = _notmuch_database_ensure_writable (_notmuch_message_database (message));
+ if (status)
+ return status;
+
+ if (key == NULL || value == NULL)
+ return NOTMUCH_STATUS_NULL_POINTER;
+
+ if (index (key, '='))
+ return NOTMUCH_STATUS_ILLEGAL_ARGUMENT;
+
+ term = talloc_asprintf (message, "%s=%s", key, value);
+
+ if (delete_it)
+ private_status = _notmuch_message_remove_term (message, "property", term);
+ else
+ private_status = _notmuch_message_add_term (message, "property", term);
+
+ if (private_status)
+ return COERCE_STATUS (private_status,
+ "Unhandled error modifying message property");
+ if (! _notmuch_message_frozen (message))
+ _notmuch_message_sync (message);
+
+ if (term)
+ talloc_free (term);
+
+ return NOTMUCH_STATUS_SUCCESS;
+}
+
+notmuch_status_t
+notmuch_message_add_property (notmuch_message_t *message, const char *key, const char *value)
+{
+ return _notmuch_message_modify_property (message, key, value, FALSE);
+}
+
+notmuch_status_t
+notmuch_message_remove_property (notmuch_message_t *message, const char *key, const char *value)
+{
+ return _notmuch_message_modify_property (message, key, value, TRUE);
+}
+
+notmuch_status_t
+notmuch_message_remove_all_properties (notmuch_message_t *message, const char *key)
+{
+ notmuch_status_t status;
+ const char * term_prefix;
+
+ status = _notmuch_database_ensure_writable (_notmuch_message_database (message));
+ if (status)
+ return status;
+
+ _notmuch_message_invalidate_metadata (message, "property");
+ if (key)
+ term_prefix = talloc_asprintf (message, "%s%s=", _find_prefix ("property"), key);
+ else
+ term_prefix = _find_prefix ("property");
+
+ /* XXX better error reporting ? */
+ _notmuch_message_remove_terms (message, term_prefix);
+
+ return NOTMUCH_STATUS_SUCCESS;
+}