diff options
Diffstat (limited to 'camel/providers/cache/camel-cache-map.c')
-rw-r--r-- | camel/providers/cache/camel-cache-map.c | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/camel/providers/cache/camel-cache-map.c b/camel/providers/cache/camel-cache-map.c deleted file mode 100644 index d3cece6f60..0000000000 --- a/camel/providers/cache/camel-cache-map.c +++ /dev/null @@ -1,255 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* camel-cache-map.c : functions for a local<->remote uid map */ - -/* - * Authors: - * Dan Winship <danw@helixcode.com> - * - * Copyright (C) 2000 Helix Code, Inc. (www.helixcode.com) - * - * 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 2 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, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 - * USA - */ - -#include "camel-cache-map.h" -#include <camel/camel-exception.h> - -#include <errno.h> -#include <fcntl.h> -#include <stdio.h> -#include <string.h> -#include <sys/stat.h> -#include <unistd.h> - -/** - * camel_cache_map_new: - * - * Return value: a new CamelCacheMap - **/ -CamelCacheMap * -camel_cache_map_new (void) -{ - CamelCacheMap *map = g_new (CamelCacheMap, 1); - - map->l2r = g_hash_table_new (g_str_hash, g_str_equal); - map->r2l = g_hash_table_new (g_str_hash, g_str_equal); - - return map; -} - -static void -free_mapping (gpointer key, gpointer value, gpointer data) -{ - g_free (key); - g_free (data); -} - -/** - * camel_cache_map_destroy: - * @map: a CamelCacheMap - * - * Frees @map and all of the data stored in it. - **/ -void -camel_cache_map_destroy (CamelCacheMap *map) -{ - g_hash_table_foreach (map->l2r, free_mapping, NULL); - g_hash_table_destroy (map->l2r); - g_hash_table_destroy (map->r2l); - g_free (map); -} - -/** - * camel_cache_map_add: - * @map: a CamelCacheMap - * @luid: the local uid - * @ruid: the remote uid - * - * Adds a mapping between @luid and @ruid. If either already exists - * in the map, this may leak memory and result in incorrect map entries. - * Use camel_cache_map_update() in that case instead. - **/ -void -camel_cache_map_add (CamelCacheMap *map, const char *luid, const char *ruid) -{ - char *map_luid = g_strdup (luid); - char *map_ruid = g_strdup (ruid); - - g_hash_table_insert (map->l2r, map_luid, map_ruid); - g_hash_table_insert (map->r2l, map_ruid, map_luid); -} - -/** - * camel_cache_map_remove: - * @map: a CamelCacheMap - * @luid: the local uid - * @ruid: the remote uid - * - * Removes the mapping between @luid and @ruid. Either (but not both) - * of the uids can be %NULL if they are not both known. - **/ -void -camel_cache_map_remove (CamelCacheMap *map, const char *luid, const char *ruid) -{ - gpointer map_luid, map_ruid; - - if ((luid && g_hash_table_lookup_extended (map->l2r, luid, - &map_luid, &map_ruid)) || - (ruid && g_hash_table_lookup_extended (map->r2l, ruid, - &map_luid, &map_ruid))) { - g_hash_table_remove (map->l2r, map_luid); - g_hash_table_remove (map->r2l, map_ruid); - g_free (map_luid); - g_free (map_ruid); - } -} - -/** - * camel_cache_map_update: - * @map: a CamelCacheMap - * @luid: the local uid - * @ruid: the remote uid - * - * Updates the mappings to associate @luid with @ruid, clearing any - * previous mappings for both of them. - **/ -void -camel_cache_map_update (CamelCacheMap *map, const char *luid, const char *ruid) -{ - camel_cache_map_remove (map, luid, ruid); - camel_cache_map_add (map, luid, ruid); -} - -/** - * camel_cache_map_get_local - * @map: a CamelCacheMap - * @ruid: the remote uid - * - * Return value: the corresponding local uid, or %NULL - **/ -const char * -camel_cache_map_get_local (CamelCacheMap *map, const char *ruid) -{ - return g_hash_table_lookup (map->r2l, ruid); -} - -/** - * camel_cache_map_get_remote - * @map: a CamelCacheMap - * @luid: the local uid - * - * Return value: the corresponding remote uid, or %NULL - **/ -const char * -camel_cache_map_get_remote (CamelCacheMap *map, const char *luid) -{ - return g_hash_table_lookup (map->l2r, luid); -} - - - -static void -write_mapping (gpointer key, gpointer value, gpointer user_data) -{ - int fd = *(int *)user_data; - - /* FIXME: We assume the local UID has no ':'s in it. */ - write (fd, key, strlen (key)); - write (fd, ":", 1); - write (fd, value, strlen (value)); - write (fd, "\n", 1); -} - -/** - * camel_cache_map_write: - * @map: a CamelCacheMap - * @file: the filename to write the map to - * @ex: a CamelException - * - * Writes @map out to @file, setting @ex if something goes wrong. - **/ -void -camel_cache_map_write (CamelCacheMap *map, const char *file, - CamelException *ex) -{ - int fd; - char *tmpfile; - - tmpfile = g_strdup_printf ("%s~", file); - fd = open (tmpfile, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR); - if (fd == -1) { - g_free (tmpfile); - camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, - "Could not create cache map file: %s", - g_strerror (errno)); - return; - } - - g_hash_table_foreach (map->l2r, write_mapping, &fd); - - if (close (fd) == -1 || - rename (tmpfile, file) == -1) { - camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, - "Could not save cache map file: %s", - g_strerror (errno)); - unlink (tmpfile); - } - g_free (tmpfile); -} - -/** - * camel_cache_map_read: - * @map: a CamelCacheMap - * @file: the filename to read the map from - * @ex: a CamelException - * - * Reads @map from @file, setting @ex if something goes wrong. @map - * should be a freshly-created CamelCacheMap. - **/ -void -camel_cache_map_read (CamelCacheMap *map, const char *file, CamelException *ex) -{ - FILE *f; - char buf[1024], *p, *q; - - /* FIXME: lazy implementation. We could make this work with - * lines longer than 1024 chars. :) - */ - - f = fopen (file, "r"); - if (!f) { - camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, - "Could not open cache map file: %s", - g_strerror (errno)); - return; - } - - while (fgets (buf, sizeof (buf), f)) { - p = strchr (buf, ':'); - if (p) - q = strchr (buf, '\n'); - if (!p || !q) { - camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, - "Bad cache file."); - return; - } - *p++ = *q = '\0'; - - /* Local uid at buf, remote at p. */ - camel_cache_map_add (map, buf, p); - } - - fclose (f); -} |