/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* camel-uid-cache.c: UID caching code. */ /* * Authors: * Dan Winship <danw@ximian.com> * * Copyright 2000 Ximian, Inc. (www.ximian.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * 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 */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <errno.h> #include <fcntl.h> #include <string.h> #include <sys/stat.h> #include <unistd.h> #include "camel-uid-cache.h" struct _uid_state { int level; gboolean save; }; static void free_uid (gpointer key, gpointer value, gpointer data); static void maybe_write_uid (gpointer key, gpointer value, gpointer data); static int mkdir_heir (const char *path, mode_t mode) { char *copy, *p; p = copy = g_strdup (path); do { p = strchr (p + 1, '/'); if (p) *p = '\0'; if (access (copy, F_OK) == -1) { if (mkdir (copy, mode) == -1) { g_free (copy); return -1; } } if (p) *p = '/'; } while (p); g_free (copy); return 0; } /** * camel_uid_cache_new: * @filename: path to load the cache from * * Creates a new UID cache, initialized from @filename. If @filename * doesn't already exist, the UID cache will be empty. Otherwise, if * it does exist but can't be read, the function will return %NULL. * * Return value: a new UID cache, or %NULL **/ CamelUIDCache * camel_uid_cache_new (const char *filename) { CamelUIDCache *cache; struct stat st; char *dirname, *buf, **uids; int fd, i; dirname = g_path_get_dirname (filename); mkdir_heir (dirname, 0700); g_free (dirname); fd = open (filename, O_RDWR | O_CREAT, 0700); if (fd == -1) return NULL; if (fstat (fd, &st) != 0) { close (fd); return NULL; } buf = g_malloc (st.st_size + 1); if (read (fd, buf, st.st_size) == -1) { close (fd); g_free (buf); return NULL; } buf[st.st_size] = '\0'; cache = g_new (CamelUIDCache, 1); cache->fd = fd; cache->level = 1; cache->uids = g_hash_table_new (g_str_hash, g_str_equal); uids = g_strsplit (buf, "\n", 0); g_free (buf); for (i = 0; uids[i]; i++) { struct _uid_state *state; state = g_new (struct _uid_state, 1); state->level = cache->level; state->save = TRUE; g_hash_table_insert (cache->uids, uids[i], state); } g_free (uids); return cache; } /** * camel_uid_cache_save: * @cache: a CamelUIDCache * * Attempts to save @cache back to disk. * * Return value: success or failure **/ gboolean camel_uid_cache_save (CamelUIDCache *cache) { if (lseek (cache->fd, 0, SEEK_SET) != 0) return FALSE; g_hash_table_foreach (cache->uids, maybe_write_uid, cache); return ftruncate (cache->fd, lseek (cache->fd, 0, SEEK_CUR)) == 0; } static void maybe_write_uid (gpointer key, gpointer value, gpointer data) { CamelUIDCache *cache = data; struct _uid_state *state = value; if (state && state->level == cache->level && state->save) { write (cache->fd, key, strlen (key)); write (cache->fd, "\n", 1); } } /** * camel_uid_cache_destroy: * @cache: a CamelUIDCache * * Destroys @cache and frees its data. **/ void camel_uid_cache_destroy (CamelUIDCache *cache) { g_hash_table_foreach (cache->uids, free_uid, NULL); g_hash_table_destroy (cache->uids); close (cache->fd); g_free (cache); } static void free_uid (gpointer key, gpointer value, gpointer data) { g_free (key); g_free (value); } /** * camel_uid_cache_get_new_uids: * @cache: a CamelUIDCache * @uids: an array of UIDs * * Returns an array of UIDs from @uids that are not in @cache, and * removes UIDs from @cache that aren't in @uids. * * Return value: an array of new UIDs, which must be freed with * camel_uid_cache_free_uids(). **/ GPtrArray * camel_uid_cache_get_new_uids (CamelUIDCache *cache, GPtrArray *uids) { GPtrArray *new_uids; gpointer old_uid; char *uid; int i; new_uids = g_ptr_array_new (); cache->level++; for (i = 0; i < uids->len; i++) { struct _uid_state *state; uid = uids->pdata[i]; if (g_hash_table_lookup_extended (cache->uids, uid, (void **)&old_uid, (void **)&state)) { g_hash_table_remove (cache->uids, uid); g_free (old_uid); } else { g_ptr_array_add (new_uids, g_strdup (uid)); state = g_new (struct _uid_state, 1); state->save = FALSE; } state->level = cache->level; g_hash_table_insert (cache->uids, g_strdup (uid), state); } return new_uids; } /** * camel_uid_cache_save_uid: * @cache: a CamelUIDCache * @uid: a uid to save * * Marks a uid for saving. **/ void camel_uid_cache_save_uid (CamelUIDCache *cache, const char *uid) { struct _uid_state *state; gpointer old_uid; g_return_if_fail (uid != NULL); if (g_hash_table_lookup_extended (cache->uids, uid, (void **)&old_uid, (void **)&state)) { state->save = TRUE; state->level = cache->level; } else { state = g_new (struct _uid_state, 1); state->save = TRUE; state->level = cache->level; g_hash_table_insert (cache->uids, g_strdup (uid), state); } } /** * camel_uid_cache_free_uids: * @uids: an array returned from camel_uid_cache_get_new_uids() * * Frees the array of UIDs. **/ void camel_uid_cache_free_uids (GPtrArray *uids) { int i; for (i = 0; i < uids->len; i++) g_free (uids->pdata[i]); g_ptr_array_free (uids, TRUE); } ats/databases/libgda'>stats</a></td><td class='form'><form class='right' method='get' action='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/log/databases/libgda'> <input type='hidden' name='id' value='d09ae746fd279eefe320a150670bcbfa61a66209'/><select name='qt'> <option value='grep'>log msg</option> <option value='author'>author</option> <option value='committer'>committer</option> <option value='range'>range</option> </select> <input class='txt' type='search' size='10' name='q' value=''/> <input type='submit' value='search'/> </form> </td></tr></table> <div class='path'>path: <a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/log/?id=d09ae746fd279eefe320a150670bcbfa61a66209'>root</a>/<a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/log/databases?id=d09ae746fd279eefe320a150670bcbfa61a66209'>databases</a>/<a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/log/databases/libgda?id=d09ae746fd279eefe320a150670bcbfa61a66209'>libgda</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th></th><th class='left'>Commit message (<a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/log/databases/libgda?id=d09ae746fd279eefe320a150670bcbfa61a66209&showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Age</th><th class='left'>Files</th><th class='left'>Lines</th></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=87f4d471fb27b9547c1a0de221b51f4c31684157'>- Welcome X.org 7.2 \o/.</a></td><td>flz</td><td><span title='2007-05-20 04:36:56 +0800'>2007-05-20</span></td><td>2</td><td><span class='deletions'>-23</span>/<span class='insertions'>+1</span></td></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=a0fa03b7f06fbd2b742d0f43e58bdf6980346c41'>Fix the build with objformat removal on -CURRENT.</a></td><td>mezz</td><td><span title='2007-03-03 02:59:29 +0800'>2007-03-03</span></td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=2e49f22cb95fce3840ccd20087cdc01389b7bcab'>Add conflicts with libgda2.</a></td><td>netchild</td><td><span title='2007-01-07 03:34:50 +0800'>2007-01-07</span></td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+3</span></td></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=5a13dc799fc97432b6ccef8591950142a12e69fa'>Add a patch which lets this compile on my -current system.</a></td><td>netchild</td><td><span title='2007-01-07 03:31:00 +0800'>2007-01-07</span></td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+18</span></td></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=0deb7538cc6a5ae90f4e3e4bdbfe6d0ab974aed8'>Chase the GNOME X11BASE to LOCALBASE move, and fix the build with the</a></td><td>marcus</td><td><span title='2006-10-14 16:54:54 +0800'>2006-10-14</span></td><td>2</td><td><span class='deletions'>-3</span>/<span class='insertions'>+26</span></td></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=1a0d3c0ca1adc625e4369c026975d83e678e8ce3'>portlint:</a></td><td>mezz</td><td><span title='2006-05-16 12:02:04 +0800'>2006-05-16</span></td><td>2</td><td><span class='deletions'>-13</span>/<span class='insertions'>+14</span></td></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=adf42e5d3b9afd4f472a3e8b07f76dbc6e411ff6'>Add USE_GETTEXT to appease portlint.</a></td><td>mezz</td><td><span title='2006-05-16 06:23:04 +0800'>2006-05-16</span></td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=f07e7ab26ee96c06478847d07ac072b4b2c64e23'>Remove USE_REINPLACE from all categories starting with D</a></td><td>edwin</td><td><span title='2006-05-05 05:41:12 +0800'>2006-05-05</span></td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+0</span></td></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=da880765886f48c0ac8fd253e5601d04ea853215'>Conversion to a single libtool environment.</a></td><td>ade</td><td><span title='2006-02-23 18:40:44 +0800'>2006-02-23</span></td><td>2</td><td><span class='deletions'>-2</span>/<span class='insertions'>+6</span></td></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=6aa335e557af790cf39cf78dc626b08374709484'>- Add SHA256 checksums</a></td><td>pav</td><td><span title='2005-11-24 06:41:05 +0800'>2005-11-24</span></td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=8d9d5197561118544281733430b48b0b60884450'>Mass-conversion to the USE_AUTOTOOLS New World Order. The code present</a></td><td>ade</td><td><span title='2005-11-15 14:52:12 +0800'>2005-11-15</span></td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr> <tr><td class='commitgraph'>* </td><td><a href='/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/databases/libgda?id=3f8673b5304491d815979cbca9f5698f2e27e181'>At Kris's request, back out the MACHINE_ARCH spelling correction until</a></td><td>obrien</td><td><span title='2005-04-12 11:26:56 +0800'>2005-04-12</span></td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr>