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-rw-r--r--src/nautilus-keyfile-metadata.c316
1 files changed, 316 insertions, 0 deletions
diff --git a/src/nautilus-keyfile-metadata.c b/src/nautilus-keyfile-metadata.c
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+/*
+ * Nautilus
+ *
+ * Copyright (C) 2011 Red Hat, Inc.
+ *
+ * Nautilus 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.
+ *
+ * Nautilus 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; see the file COPYING. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Cosimo Cecchi <cosimoc@redhat.com>
+ */
+
+#include <config.h>
+
+#include "nautilus-keyfile-metadata.h"
+
+#include "nautilus-directory-notify.h"
+#include "nautilus-file-private.h"
+#include "nautilus-file-utilities.h"
+
+#include <glib/gstdio.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+typedef struct {
+ GKeyFile *keyfile;
+ guint save_in_idle_id;
+} KeyfileMetadataData;
+
+static GHashTable *data_hash = NULL;
+
+static KeyfileMetadataData *
+keyfile_metadata_data_new (const char *keyfile_filename)
+{
+ KeyfileMetadataData *data;
+ GKeyFile *retval;
+ GError *error = NULL;
+
+ retval = g_key_file_new ();
+
+ g_key_file_load_from_file (retval,
+ keyfile_filename,
+ G_KEY_FILE_NONE,
+ &error);
+
+ if (error != NULL) {
+ if (!g_error_matches (error,
+ G_FILE_ERROR,
+ G_FILE_ERROR_NOENT)) {
+ g_print ("Unable to open the desktop metadata keyfile: %s\n",
+ error->message);
+ }
+
+ g_error_free (error);
+ }
+
+ data = g_slice_new0 (KeyfileMetadataData);
+ data->keyfile = retval;
+
+ return data;
+}
+
+static void
+keyfile_metadata_data_free (KeyfileMetadataData *data)
+{
+ g_key_file_unref (data->keyfile);
+
+ if (data->save_in_idle_id != 0) {
+ g_source_remove (data->save_in_idle_id);
+ }
+
+ g_slice_free (KeyfileMetadataData, data);
+}
+
+static GKeyFile *
+get_keyfile (const char *keyfile_filename)
+{
+ KeyfileMetadataData *data;
+
+ if (data_hash == NULL) {
+ data_hash = g_hash_table_new_full (g_str_hash,
+ g_str_equal,
+ g_free,
+ (GDestroyNotify) keyfile_metadata_data_free);
+ }
+
+ data = g_hash_table_lookup (data_hash, keyfile_filename);
+
+ if (data == NULL) {
+ data = keyfile_metadata_data_new (keyfile_filename);
+
+ g_hash_table_insert (data_hash,
+ g_strdup (keyfile_filename),
+ data);
+ }
+
+ return data->keyfile;
+}
+
+static gboolean
+save_in_idle_cb (const gchar *keyfile_filename)
+{
+ KeyfileMetadataData *data;
+ gchar *contents;
+ gsize length;
+ GError *error = NULL;
+
+ data = g_hash_table_lookup (data_hash, keyfile_filename);
+ data->save_in_idle_id = 0;
+
+ contents = g_key_file_to_data (data->keyfile, &length, NULL);
+
+ if (contents != NULL) {
+ g_file_set_contents (keyfile_filename,
+ contents, length,
+ &error);
+ g_free (contents);
+ }
+
+ if (error != NULL) {
+ g_warning ("Couldn't save the desktop metadata keyfile to disk: %s",
+ error->message);
+ g_error_free (error);
+ }
+
+ return FALSE;
+}
+
+static void
+save_in_idle (const char *keyfile_filename)
+{
+ KeyfileMetadataData *data;
+
+ g_return_if_fail (data_hash != NULL);
+
+ data = g_hash_table_lookup (data_hash, keyfile_filename);
+ g_return_if_fail (data != NULL);
+
+ if (data->save_in_idle_id != 0) {
+ return;
+ }
+
+ data->save_in_idle_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE,
+ (GSourceFunc) save_in_idle_cb,
+ g_strdup (keyfile_filename),
+ g_free);
+}
+
+void
+nautilus_keyfile_metadata_set_string (NautilusFile *file,
+ const char *keyfile_filename,
+ const gchar *name,
+ const gchar *key,
+ const gchar *string)
+{
+ GKeyFile *keyfile;
+
+ keyfile = get_keyfile (keyfile_filename);
+
+ g_key_file_set_string (keyfile,
+ name,
+ key,
+ string);
+
+ save_in_idle (keyfile_filename);
+
+ if (nautilus_keyfile_metadata_update_from_keyfile (file, keyfile_filename, name)) {
+ nautilus_file_changed (file);
+ }
+}
+
+#define STRV_TERMINATOR "@x-nautilus-desktop-metadata-term@"
+
+void
+nautilus_keyfile_metadata_set_stringv (NautilusFile *file,
+ const char *keyfile_filename,
+ const char *name,
+ const char *key,
+ const char * const *stringv)
+{
+ GKeyFile *keyfile;
+ guint length;
+ gchar **actual_stringv = NULL;
+ gboolean free_strv = FALSE;
+
+ keyfile = get_keyfile (keyfile_filename);
+
+ /* if we would be setting a single-length strv, append a fake
+ * terminator to the array, to be able to differentiate it later from
+ * the single string case
+ */
+ length = g_strv_length ((gchar **) stringv);
+
+ if (length == 1) {
+ actual_stringv = g_malloc0 (3 * sizeof (gchar *));
+ actual_stringv[0] = (gchar *) stringv[0];
+ actual_stringv[1] = STRV_TERMINATOR;
+ actual_stringv[2] = NULL;
+
+ length = 2;
+ free_strv = TRUE;
+ } else {
+ actual_stringv = (gchar **) stringv;
+ }
+
+ g_key_file_set_string_list (keyfile,
+ name,
+ key,
+ (const gchar **) actual_stringv,
+ length);
+
+ save_in_idle (keyfile_filename);
+
+ if (nautilus_keyfile_metadata_update_from_keyfile (file, keyfile_filename, name)) {
+ nautilus_file_changed (file);
+ }
+
+ if (free_strv) {
+ g_free (actual_stringv);
+ }
+}
+
+gboolean
+nautilus_keyfile_metadata_update_from_keyfile (NautilusFile *file,
+ const char *keyfile_filename,
+ const gchar *name)
+{
+ gchar **keys, **values;
+ const gchar *actual_values[2];
+ const gchar *key, *value;
+ gchar *gio_key;
+ gsize length, values_length;
+ GKeyFile *keyfile;
+ GFileInfo *info;
+ gint idx;
+ gboolean res;
+
+ keyfile = get_keyfile (keyfile_filename);
+
+ keys = g_key_file_get_keys (keyfile,
+ name,
+ &length,
+ NULL);
+
+ if (keys == NULL) {
+ return FALSE;
+ }
+
+ info = g_file_info_new ();
+
+ for (idx = 0; idx < length; idx++) {
+ key = keys[idx];
+ values = g_key_file_get_string_list (keyfile,
+ name,
+ key,
+ &values_length,
+ NULL);
+
+ gio_key = g_strconcat ("metadata::", key, NULL);
+
+ if (values_length < 1) {
+ continue;
+ } else if (values_length == 1) {
+ g_file_info_set_attribute_string (info,
+ gio_key,
+ values[0]);
+ } else if (values_length == 2) {
+ /* deal with the fact that single-length strv are stored
+ * with an additional terminator in the keyfile string, to differentiate
+ * them from the regular string case.
+ */
+ value = values[1];
+
+ if (g_strcmp0 (value, STRV_TERMINATOR) == 0) {
+ /* if the 2nd value is the terminator, remove it */
+ actual_values[0] = values[0];
+ actual_values[1] = NULL;
+
+ g_file_info_set_attribute_stringv (info,
+ gio_key,
+ (gchar **) actual_values);
+ } else {
+ /* otherwise, set it as a regular strv */
+ g_file_info_set_attribute_stringv (info,
+ gio_key,
+ values);
+ }
+ } else {
+ g_file_info_set_attribute_stringv (info,
+ gio_key,
+ values);
+ }
+
+ g_free (gio_key);
+ g_strfreev (values);
+ }
+
+ res = nautilus_file_update_metadata_from_info (file, info);
+
+ g_strfreev (keys);
+ g_object_unref (info);
+
+ return res;
+}