diff options
Diffstat (limited to 'src/nautilus-keyfile-metadata.c')
| -rw-r--r-- | src/nautilus-keyfile-metadata.c | 343 |
1 files changed, 343 insertions, 0 deletions
diff --git a/src/nautilus-keyfile-metadata.c b/src/nautilus-keyfile-metadata.c new file mode 100644 index 0000000..76b4fae --- /dev/null +++ b/src/nautilus-keyfile-metadata.c @@ -0,0 +1,343 @@ +/* + * 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; +} |