Initial cut for local provider, to handle mh/mailbox/maildir at

	least.
	Checking in to make a backup.

svn path=/trunk/; revision=6575

1 files changed, 211 insertions, 0 deletions

diff --git a/camel/providers/local/camel-local-store.c b/camel/providers/local/camel-local-store.c
new file mode 100644
index 0000000000..c07a1d2c3a
--- /dev/null
+++ b/camel/providers/local/camel-local-store.c
@@ -0,0 +1,211 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
+ * Authors: Michael Zucchi <notzed@helixcode.com>
+ *
+ * Copyright (C) 2000 Helix Code, Inc.
+ *
+ * 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 <config.h>
+
+#include <sys/stat.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include "camel-local-store.h"
+#include "camel-exception.h"
+#include "camel-url.h"
+
+/* Returns the class for a CamelLocalStore */
+#define CLOCALS_CLASS(so) CAMEL_LOCAL_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
+#define CF_CLASS(so) CAMEL_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
+
+static char *get_name(CamelService *service, gboolean brief);
+static void rename_folder(CamelStore *store, const char *old_name, const char *new_name, CamelException *ex);
+static char *get_folder_name(CamelStore *store, const char *folder_name, CamelException *ex);
+static CamelFolderInfo *get_folder_info (CamelStore *store, const char *top,
+					 gboolean fast, gboolean recursive,
+					 gboolean subscribed_only,
+					 CamelException *ex);
+static void delete_folder(CamelStore *store, const char *folder_name, CamelException *ex);
+static void rename_folder(CamelStore *store, const char *old, const char *new, CamelException *ex);
+
+static void
+camel_local_store_class_init (CamelLocalStoreClass *camel_local_store_class)
+{
+	CamelStoreClass *camel_store_class = CAMEL_STORE_CLASS (camel_local_store_class);
+	CamelServiceClass *camel_service_class = CAMEL_SERVICE_CLASS (camel_local_store_class);
+	
+	/* virtual method overload */
+	camel_service_class->get_name = get_name;
+	camel_store_class->get_folder_name = get_folder_name;
+	camel_store_class->get_folder_info = get_folder_info;
+	camel_store_class->free_folder_info = camel_store_free_folder_info_full;
+
+	camel_store_class->delete_folder = delete_folder;
+	camel_store_class->rename_folder = rename_folder;
+}
+
+static void
+camel_local_store_init (gpointer object, gpointer klass)
+{
+	CamelStore *store = CAMEL_STORE (object);
+
+	/* local names are filenames, so they are case-sensitive. */
+	store->folders = g_hash_table_new (g_str_hash, g_str_equal);
+}
+
+CamelType
+camel_local_store_get_type (void)
+{
+	static CamelType camel_local_store_type = CAMEL_INVALID_TYPE;
+	
+	if (camel_local_store_type == CAMEL_INVALID_TYPE)	{
+		camel_local_store_type = camel_type_register (CAMEL_STORE_TYPE, "CamelLocalStore",
+							     sizeof (CamelLocalStore),
+							     sizeof (CamelLocalStoreClass),
+							     (CamelObjectClassInitFunc) camel_local_store_class_init,
+							     NULL,
+							     (CamelObjectInitFunc) camel_local_store_init,
+							     NULL);
+	}
+	
+	return camel_local_store_type;
+}
+
+const char *
+camel_local_store_get_toplevel_dir (CamelLocalStore *store)
+{
+	CamelURL *url = CAMEL_SERVICE (store)->url;
+
+	g_assert (url != NULL);
+	return url->path;
+}
+
+static char *
+get_folder_name (CamelStore *store, const char *folder_name, CamelException *ex)
+{
+	/* For now, we don't allow hieararchy. FIXME. */
+	if (strchr (folder_name + 1, '/')) {
+		camel_exception_set (ex, CAMEL_EXCEPTION_STORE_NO_FOLDER,
+				     _("Local folders may not be nested."));
+		return NULL;
+	}
+
+	return *folder_name == '/' ? g_strdup (folder_name) :
+		g_strdup_printf ("/%s", folder_name);
+}
+
+static char *
+get_name (CamelService *service, gboolean brief)
+{
+	if (brief)
+		return g_strdup (service->url->path);
+	else
+		return g_strdup_printf (_("Local mail file %s"), service->url->path);
+}
+
+static CamelFolderInfo *
+get_folder_info (CamelStore *store, const char *top,
+		 gboolean fast, gboolean recursive,
+		 gboolean subscribed_only,
+		 CamelException *ex)
+{
+	/* FIXME: This is broken, but it corresponds to what was
+	 * there before.
+	 */
+	return NULL;
+}
+
+static int xrename(const char *oldp, const char *newp, const char *prefix, const char *suffix, CamelException *ex)
+{
+	struct stat st;
+	char *old = g_strconcat(prefix, oldp, suffix, 0);
+	char *new = g_strconcat(prefix, newp, suffix, 0);
+	int ret = -1;
+
+	printf("renaming %s%s to %s%s\n", oldp, suffix, newp, suffix);
+
+	/* FIXME: this has races ... */
+	if (!(stat(new, &st) == -1 && errno==ENOENT)) {
+		camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
+				     _("Could not rename folder %s to %s: destination exists"),
+				     old, new);
+	} else if (rename(old, new) == 0 || errno==ENOENT) {
+		ret = 0;
+	} else if (stat(old, &st) == -1 && errno==ENOENT && stat(new, &st) == 0) {
+		/* for nfs, check if the rename worked anyway ... */
+		ret = 0;
+	}
+
+	g_free(old);
+	g_free(new);
+	return ret;
+}
+
+/* default implementation, rename all */
+static void
+rename_folder(CamelStore *store, const char *old, const char *new, CamelException *ex)
+{
+	char *path = CAMEL_SERVICE (store)->url->path;
+
+	/* try to rollback failures, has obvious races */
+	if (xrename(old, new, path, ".ibex", ex)) {
+		return;
+	}
+	if (xrename(old, new, path, ".ev-summary", ex)) {
+		xrename(new, old, path, ".ibex", ex);
+		return;
+	}
+	if (xrename(old, new, path, "", ex)) {
+		xrename(new, old, path, ".ev-summary", ex);
+		xrename(new, old, path, ".ibex", ex);
+	}
+}
+
+/* default implementation, only delete metadata */
+static void
+delete_folder(CamelStore *store, const char *folder_name, CamelException *ex)
+{
+	char *name;
+	char *str;
+
+	/* remove metadata only */
+	name = g_strdup_printf("%s%s", CAMEL_SERVICE(store)->url->path, folder_name);
+	str = g_strdup_printf("%s.ev-summary", name);
+	if (unlink(str) == -1 && errno != ENOENT) {
+		camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
+				     _("Could not delete folder summary file `%s': %s"),
+				     str, strerror(errno));
+		g_free(str);
+		return;
+	}
+	g_free(str);
+	str = g_strdup_printf("%s.ibex", name);
+	if (unlink(str) == -1 && errno != ENOENT) {
+		camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
+				     _("Could not delete folder index file `%s': %s"),
+				     str, strerror(errno));
+		g_free(str);
+		return;
+	}
+	g_free(str);
+	g_free(name);
+}