#include "notmuch-private.h"
#include "database-private.h"
-struct _notmuch_filenames {
- Xapian::TermIterator iterator;
- Xapian::TermIterator end;
- int prefix_len;
- char *filename;
-};
-
-/* We end up having to call the destructors explicitly because we had
- * to use "placement new" in order to initialize C++ objects within a
- * block that we allocated with talloc. So C++ is making talloc
- * slightly less simple to use, (we wouldn't need
- * talloc_set_destructor at all otherwise).
- */
-static int
-_notmuch_filenames_destructor (notmuch_filenames_t *filenames)
-{
- filenames->iterator.~TermIterator ();
- filenames->end.~TermIterator ();
-
- return 0;
-}
-
/* Create an iterator to iterate over the basenames of files (or
* directories) that all share a common parent directory.
*
* prefix.
*/
static notmuch_filenames_t *
-_notmuch_filenames_create (void *ctx,
- notmuch_database_t *notmuch,
- const char *prefix)
+_create_filenames_for_terms_with_prefix (void *ctx,
+ notmuch_database_t *notmuch,
+ const char *prefix)
{
notmuch_filenames_t *filenames;
+ Xapian::TermIterator i, end;
+ int prefix_len = strlen (prefix);
- filenames = talloc (ctx, notmuch_filenames_t);
+ filenames = _notmuch_filenames_create (ctx);
if (unlikely (filenames == NULL))
return NULL;
- new (&filenames->iterator) Xapian::TermIterator ();
- new (&filenames->end) Xapian::TermIterator ();
-
- talloc_set_destructor (filenames, _notmuch_filenames_destructor);
-
- filenames->iterator = notmuch->xapian_db->allterms_begin (prefix);
- filenames->end = notmuch->xapian_db->allterms_end (prefix);
-
- filenames->prefix_len = strlen (prefix);
-
- filenames->filename = NULL;
-
- return filenames;
-}
-
-notmuch_bool_t
-notmuch_filenames_valid (notmuch_filenames_t *filenames)
-{
- if (filenames == NULL)
- return NULL;
-
- return (filenames->iterator != filenames->end);
-}
-
-const char *
-notmuch_filenames_get (notmuch_filenames_t *filenames)
-{
- if (filenames == NULL || filenames->iterator == filenames->end)
- return NULL;
-
- if (filenames->filename == NULL) {
- std::string term = *filenames->iterator;
-
- filenames->filename = talloc_strdup (filenames,
- term.c_str () +
- filenames->prefix_len);
- }
-
- return filenames->filename;
-}
+ end = notmuch->xapian_db->allterms_end (prefix);
-void
-notmuch_filenames_move_to_next (notmuch_filenames_t *filenames)
-{
- if (filenames == NULL)
- return;
+ for (i = notmuch->xapian_db->allterms_begin (prefix); i != end; i++)
+ {
+ std::string term = *i;
- if (filenames->filename) {
- talloc_free (filenames->filename);
- filenames->filename = NULL;
+ _notmuch_filenames_add_filename (filenames, term.c_str () +
+ prefix_len);
}
- if (filenames->iterator != filenames->end)
- filenames->iterator++;
-}
+ _notmuch_filenames_move_to_first (filenames);
-void
-notmuch_filenames_destroy (notmuch_filenames_t *filenames)
-{
- if (filenames == NULL)
- return;
-
- talloc_free (filenames);
+ return filenames;
}
struct _notmuch_directory {
_find_prefix ("file-direntry"),
directory->document_id);
- child_files = _notmuch_filenames_create (directory,
- directory->notmuch, term);
+ child_files = _create_filenames_for_terms_with_prefix (directory,
+ directory->notmuch,
+ term);
talloc_free (term);
_find_prefix ("directory-direntry"),
directory->document_id);
- child_directories = _notmuch_filenames_create (directory,
- directory->notmuch, term);
+ child_directories = _create_filenames_for_terms_with_prefix (directory,
+ directory->notmuch, term);
talloc_free (term);
--- /dev/null
+/* filenames.c - Iterator for a list of filenames
+ *
+ * Copyright © 2010 Intel Corporation
+ *
+ * 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: Carl Worth <cworth@cworth.org>
+ */
+
+#include "notmuch-private.h"
+
+typedef struct _notmuch_filenames_node {
+ char *filename;
+ struct _notmuch_filenames_node *next;
+} notmuch_filenames_node_t;
+
+struct _notmuch_filenames {
+ notmuch_filenames_node_t *head;
+ notmuch_filenames_node_t **tail;
+ notmuch_filenames_node_t *iterator;
+};
+
+/* Create a new notmuch_filenames_t object, with 'ctx' as its
+ * talloc owner.
+ *
+ * This function can return NULL in case of out-of-memory.
+ */
+notmuch_filenames_t *
+_notmuch_filenames_create (const void *ctx)
+{
+ notmuch_filenames_t *filenames;
+
+ filenames = talloc (ctx, notmuch_filenames_t);
+ if (unlikely (filenames == NULL))
+ return NULL;
+
+ filenames->head = NULL;
+ filenames->tail = &filenames->head;
+
+ filenames->iterator = NULL;
+
+ return filenames;
+}
+
+/* Append a single 'node' to the end of 'filenames'.
+ */
+void
+_notmuch_filenames_add_filename (notmuch_filenames_t *filenames,
+ const char *filename)
+{
+ /* Create and initialize new node. */
+ notmuch_filenames_node_t *node = talloc (filenames,
+ notmuch_filenames_node_t);
+
+ node->filename = talloc_strdup (node, filename);
+ node->next = NULL;
+
+ /* Append the node to the list. */
+ *(filenames->tail) = node;
+ filenames->tail = &node->next;
+}
+
+notmuch_bool_t
+notmuch_filenames_valid (notmuch_filenames_t *filenames)
+{
+ if (filenames == NULL)
+ return FALSE;
+
+ return (filenames->iterator != NULL);
+}
+
+const char *
+notmuch_filenames_get (notmuch_filenames_t *filenames)
+{
+ if (filenames->iterator == NULL)
+ return NULL;
+
+ return filenames->iterator->filename;
+}
+
+void
+_notmuch_filenames_move_to_first (notmuch_filenames_t *filenames)
+{
+ filenames->iterator = filenames->head;
+}
+
+void
+notmuch_filenames_move_to_next (notmuch_filenames_t *filenames)
+{
+ if (filenames->iterator == NULL)
+ return;
+
+ filenames->iterator = filenames->iterator->next;
+}
+
+void
+notmuch_filenames_destroy (notmuch_filenames_t *filenames)
+{
+ talloc_free (filenames);
+}
projects / notmuch.git / commitdiff