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![A. Walton](/assets/img/avatar_default.png)
2009-01-22 A. Walton <awalton@gnome.org> * libnautilus-private/nautilus-file-utilities.c (nautilus_unique_temporary_file_name): * libnautilus-private/nautilus-metafile.c (metafile_write_local): Use g_mkstemp() instead of mkstemp(). Pointed out by Paolo Borelli. svn path=/trunk/; revision=14879
2055 lines
51 KiB
C
2055 lines
51 KiB
C
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-*/
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/* nautilus-metafile.c - server side of Nautilus::Metafile
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*
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* Copyright (C) 2001 Eazel, Inc.
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* Copyright (C) 2001-2005 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <config.h>
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#include "nautilus-metafile.h"
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#include "nautilus-directory.h"
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#include "nautilus-directory.h"
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#include "nautilus-file-private.h"
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#include "nautilus-file-utilities.h"
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#include "nautilus-global-preferences.h"
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#include "nautilus-metadata.h"
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#include "nautilus-thumbnails.h"
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#include <eel/eel-glib-extensions.h>
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#include <eel/eel-gtk-macros.h>
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#include <eel/eel-string.h>
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#include <eel/eel-vfs-extensions.h>
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#include <eel/eel-xml-extensions.h>
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#include <glib.h>
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#include <glib/gstdio.h>
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#include <libxml/parser.h>
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#include <gtk/gtk.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#define METAFILE_XML_VERSION "1.0"
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#define METAFILE_PERMISSIONS 0600
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#define METAFILES_DIRECTORY_NAME "metafiles"
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enum {
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CHANGED,
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READY,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0 };
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/* TODO asynchronous copying/moving of metadata
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*
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* - potential metadata loss when a deletion is scheduled, and new metadata is copied to
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* this location before the old deletion is consumed
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*
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* - if metafile read fails, and a file from that metafile is scheduled for a copy/move operation,
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* its associated operations are not removed from pending_copies
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*
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* */
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static char *get_file_metadata (NautilusMetafile *metafile,
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const char *file_name,
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const char *key,
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const char *default_metadata);
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static GList *get_file_metadata_list (NautilusMetafile *metafile,
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const char *file_name,
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const char *list_key,
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const char *list_subkey);
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static gboolean set_file_metadata (NautilusMetafile *metafile,
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const char *file_name,
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const char *key,
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const char *default_metadata,
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const char *metadata);
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static gboolean set_file_metadata_list (NautilusMetafile *metafile,
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const char *file_name,
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const char *list_key,
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const char *list_subkey,
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GList *list);
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static void rename_file_metadata (NautilusMetafile *metafile,
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const char *old_file_name,
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const char *new_file_name);
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static void copy_file_metadata (NautilusMetafile *source_metafile,
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const char *source_file_name,
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NautilusMetafile *destination_metafile,
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const char *destination_file_name);
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static void real_copy_file_metadata (NautilusMetafile *source_metafile,
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const char *source_file_name,
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NautilusMetafile *destination_metafile,
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const char *destination_file_name);
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static void remove_file_metadata (NautilusMetafile *metafile,
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const char *file_name);
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static void real_remove_file_metadata (NautilusMetafile *metafile,
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const char *file_name);
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static void call_metafile_changed_for_one_file (NautilusMetafile *metafile,
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const char *file_name);
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static void metafile_read_restart (NautilusMetafile *metafile);
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static void metafile_read_start (NautilusMetafile *metafile);
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static void metafile_write_start (NautilusMetafile *metafile);
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static void directory_request_write_metafile (NautilusMetafile *metafile);
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static void metafile_free_metadata (NautilusMetafile *metafile);
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static void metafile_read_cancel (NautilusMetafile *metafile);
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static void async_read_cancel (NautilusMetafile *metafile);
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static void set_metafile_contents (NautilusMetafile *metafile,
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xmlDocPtr metafile_contents);
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typedef struct MetafileReadState {
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NautilusMetafile *metafile;
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GCancellable *cancellable;
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} MetafileReadState;
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typedef struct MetafileWriteState {
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xmlChar *buffer;
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goffset size;
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gboolean write_again;
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} MetafileWriteState;
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struct _NautilusMetafile {
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GObject parent_slot;
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gboolean is_read;
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xmlDoc *xml;
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GHashTable *node_hash;
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GHashTable *changes;
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/* State for reading and writing metadata. */
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MetafileReadState *read_state;
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guint write_idle_id;
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MetafileWriteState *write_state;
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GList *monitors;
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char *private_uri;
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char *directory_uri;
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};
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static GHashTable *metafiles;
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G_DEFINE_TYPE (NautilusMetafile, nautilus_metafile, G_TYPE_OBJECT);
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static void
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nautilus_metafile_init (NautilusMetafile *metafile)
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{
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metafile->node_hash = g_hash_table_new (g_str_hash, g_str_equal);
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}
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static void
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finalize (GObject *object)
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{
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NautilusMetafile *metafile;
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metafile = NAUTILUS_METAFILE (object);
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g_assert (metafile->write_state == NULL);
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async_read_cancel (metafile);
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g_assert (metafile->read_state == NULL);
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g_hash_table_remove (metafiles, metafile->directory_uri);
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metafile_free_metadata (metafile);
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g_hash_table_destroy (metafile->node_hash);
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g_assert (metafile->write_idle_id == 0);
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g_free (metafile->private_uri);
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g_free (metafile->directory_uri);
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G_OBJECT_CLASS (nautilus_metafile_parent_class)->finalize (object);
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}
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static char *
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escape_slashes (const char *str)
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{
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int n_reserved;
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const char *p;
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char *escaped, *e;
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n_reserved = 0;
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for (p = str; *p != 0; p++) {
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if (*p == '%' || *p == '/') {
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n_reserved++;
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}
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}
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escaped = g_malloc (strlen (str) + 2*n_reserved + 1);
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e = escaped;
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for (p = str; *p != 0; p++) {
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if (*p == '%') {
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*e++ = '%';
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*e++ = '2';
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*e++ = '5';
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} else if (*p == '/') {
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*e++ = '%';
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*e++ = '2';
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*e++ = 'F';
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} else {
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*e++ = *p;
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}
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}
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*e = 0;
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return escaped;
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}
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static char *
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construct_private_metafile_uri (const char *uri)
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{
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char *user_directory, *metafiles_directory;
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char *escaped_uri, *file_name;
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char *alternate_path, *alternate_uri;
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/* Ensure that the metafiles directory exists. */
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user_directory = nautilus_get_user_directory ();
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metafiles_directory = g_build_filename (user_directory, METAFILES_DIRECTORY_NAME, NULL);
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g_free (user_directory);
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g_mkdir (metafiles_directory, 0700);
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/* Construct a file name from the URI. */
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escaped_uri = escape_slashes (uri);
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file_name = g_strconcat (escaped_uri, ".xml", NULL);
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g_free (escaped_uri);
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/* Construct a URI for something in the "metafiles" directory. */
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alternate_path = g_build_filename (metafiles_directory, file_name, NULL);
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g_free (metafiles_directory);
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g_free (file_name);
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alternate_uri = g_filename_to_uri (alternate_path, NULL, NULL);
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g_free (alternate_path);
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return alternate_uri;
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}
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static void
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nautilus_metafile_set_directory_uri (NautilusMetafile *metafile,
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const char *directory_uri)
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{
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if (eel_strcmp (metafile->directory_uri, directory_uri) == 0) {
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return;
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}
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g_free (metafile->directory_uri);
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metafile->directory_uri = g_strdup (directory_uri);
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g_free (metafile->private_uri);
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metafile->private_uri
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= construct_private_metafile_uri (directory_uri);
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}
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static NautilusMetafile *
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nautilus_metafile_new (const char *directory_uri)
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{
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NautilusMetafile *metafile;
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metafile = NAUTILUS_METAFILE (g_object_new (NAUTILUS_TYPE_METAFILE, NULL));
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nautilus_metafile_set_directory_uri (metafile, directory_uri);
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return metafile;
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}
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NautilusMetafile *
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nautilus_metafile_get_for_uri (const char *directory_uri)
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{
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NautilusMetafile *metafile;
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char *canonical_uri;
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GFile *file;
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g_return_val_if_fail (directory_uri != NULL, NULL);
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if (metafiles == NULL) {
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metafiles = eel_g_hash_table_new_free_at_exit
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(g_str_hash, g_str_equal, __FILE__ ": metafiles");
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}
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file = g_file_new_for_uri (directory_uri);
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canonical_uri = g_file_get_uri (file);
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g_object_unref (file);
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metafile = g_hash_table_lookup (metafiles, canonical_uri);
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if (metafile != NULL) {
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g_object_ref (metafile);
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} else {
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metafile = nautilus_metafile_new (canonical_uri);
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g_assert (strcmp (metafile->directory_uri, canonical_uri) == 0);
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g_hash_table_insert (metafiles,
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metafile->directory_uri,
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metafile);
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}
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g_free (canonical_uri);
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return metafile;
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}
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static GList *pending_copies;
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typedef struct {
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NautilusMetafile *source_metafile;
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char *source_file_name;
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NautilusMetafile *destination_metafile;
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char *destination_file_name;
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} NautilusMetadataCopy;
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static gboolean
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nautilus_metadata_copy_equal (const NautilusMetadataCopy *a,
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const NautilusMetadataCopy *b)
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{
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return (b->source_metafile == a->source_metafile)
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&& (b->destination_metafile == a->destination_metafile)
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&& (strcmp (a->source_file_name, b->source_file_name) == 0)
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&& (strcmp (a->destination_file_name, b->destination_file_name) == 0);
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}
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static NautilusMetadataCopy *
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nautilus_metadata_get_scheduled_copy (NautilusMetafile *source_metafile,
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const char *source_file_name,
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NautilusMetafile *destination_metafile,
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const char *destination_file_name)
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{
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NautilusMetadataCopy key, *copy;
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GList *l;
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key.source_metafile = source_metafile;
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key.source_file_name = (char *) source_file_name;
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key.destination_metafile = destination_metafile;
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key.destination_file_name = (char *) destination_file_name;
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for (l = pending_copies; l != NULL; l = l->next) {
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copy = l->data;
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if (nautilus_metadata_copy_equal (l->data, &key)) {
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return copy;
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}
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}
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return NULL;
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}
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static gboolean
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nautilus_metadata_has_scheduled_copy (NautilusMetafile *source_metafile,
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const char *source_file_name)
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{
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NautilusMetadataCopy *copy;
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GList *l;
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for (l = pending_copies; l != NULL; l = l->next) {
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copy = l->data;
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if ((copy->source_metafile == source_metafile) &&
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(strcmp (copy->source_file_name, source_file_name) == 0)) {
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return TRUE;
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}
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}
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return FALSE;
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}
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static void
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nautilus_metadata_schedule_copy (NautilusMetafile *source_metafile,
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const char *source_file_name,
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NautilusMetafile *destination_metafile,
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const char *destination_file_name)
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{
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NautilusMetadataCopy *copy;
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g_assert (!source_metafile->is_read || !destination_metafile->is_read);
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copy = nautilus_metadata_get_scheduled_copy (source_metafile,
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source_file_name,
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destination_metafile,
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destination_file_name);
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if (copy == NULL) {
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copy = g_malloc (sizeof (NautilusMetadataCopy));
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copy->source_metafile = g_object_ref (source_metafile);
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copy->source_file_name = g_strdup (source_file_name);
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copy->destination_metafile = g_object_ref (destination_metafile);
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copy->destination_file_name = g_strdup (destination_file_name);
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pending_copies = g_list_prepend (pending_copies, copy);
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metafile_read_start (source_metafile);
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metafile_read_start (destination_metafile);
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}
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}
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static void
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nautilus_metadata_process_ready_copies (void)
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{
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NautilusMetadataCopy *copy;
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GList *l, *next;
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l = pending_copies;
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while (l != NULL) {
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copy = l->data;
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next = l->next;
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if (copy->source_metafile->is_read &&
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copy->destination_metafile->is_read) {
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real_copy_file_metadata (copy->source_metafile, copy->source_file_name,
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copy->destination_metafile, copy->destination_file_name);
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g_object_unref (copy->source_metafile);
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g_free (copy->source_file_name);
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g_object_unref (copy->destination_metafile);
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g_free (copy->destination_file_name);
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g_free (copy);
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pending_copies = g_list_delete_link (pending_copies, l);
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}
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l = next;
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}
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}
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static GList *pending_removals;
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typedef struct {
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NautilusMetafile *metafile;
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char *file_name;
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} NautilusMetadataRemoval;
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static gboolean
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nautilus_metadata_removal_equal (const NautilusMetadataRemoval *a,
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const NautilusMetadataRemoval *b)
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{
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return ((b->metafile == a->metafile) &&
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(strcmp (a->file_name, b->file_name) == 0));
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}
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static NautilusMetadataRemoval *
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nautilus_metadata_get_scheduled_removal (NautilusMetafile *metafile,
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const char *file_name)
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{
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NautilusMetadataRemoval key, *removal;
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GList *l;
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key.metafile = metafile;
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key.file_name = (char *) file_name;
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for (l = pending_removals; l != NULL; l = l->next) {
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removal = l->data;
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if (nautilus_metadata_removal_equal (l->data, &key)) {
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return removal;
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}
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}
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return NULL;
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}
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static void
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nautilus_metadata_schedule_removal (NautilusMetafile *metafile,
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const char *file_name)
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{
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NautilusMetadataRemoval *removal;
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g_assert (nautilus_metadata_has_scheduled_copy (metafile, file_name));
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removal = nautilus_metadata_get_scheduled_removal (metafile, file_name);
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if (removal == NULL) {
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removal = g_malloc (sizeof (NautilusMetadataRemoval));
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removal->metafile = g_object_ref (metafile);
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removal->file_name = g_strdup (file_name);
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pending_removals = g_list_prepend (pending_removals, removal);
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}
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}
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static void
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nautilus_metadata_process_ready_removals (void)
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{
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NautilusMetadataRemoval *removal;
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GList *l, *next;
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l = pending_removals;
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while (l != NULL) {
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removal = l->data;
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next = l->next;
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if (!nautilus_metadata_has_scheduled_copy (removal->metafile, removal->file_name)) {
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real_remove_file_metadata (removal->metafile, removal->file_name);
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pending_removals = g_list_delete_link (pending_removals, l);
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g_object_unref (removal->metafile);
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g_free (removal->file_name);
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}
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l = next;
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}
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}
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/* FIXME
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* Right now we only limit the number of conccurrent reads.
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* We may want to consider limiting writes as well.
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*/
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static int num_reads_in_progress;
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|
static GList *pending_reads;
|
|
|
|
#if 0
|
|
#define DEBUG_METADATA_IO
|
|
#endif
|
|
|
|
static void
|
|
schedule_next_read (void)
|
|
{
|
|
const int kMaxAsyncReads = 10;
|
|
|
|
GList* node;
|
|
|
|
#ifdef DEBUG_METADATA_IO
|
|
g_message ("schedule_next_read: %d pending reads, %d reads in progress",
|
|
g_list_length (pending_reads), num_reads_in_progress);
|
|
#endif
|
|
|
|
if (pending_reads != NULL && num_reads_in_progress <= kMaxAsyncReads) {
|
|
node = pending_reads;
|
|
pending_reads = g_list_remove_link (pending_reads, node);
|
|
#ifdef DEBUG_METADATA_IO
|
|
g_message ("schedule_next_read: %s", NAUTILUS_METAFILE (node->data)->details->directory_uri);
|
|
#endif
|
|
metafile_read_start (node->data);
|
|
g_list_free_1 (node);
|
|
++num_reads_in_progress;
|
|
}
|
|
}
|
|
|
|
static void
|
|
async_read_start (NautilusMetafile *metafile)
|
|
{
|
|
if (metafile->is_read ||
|
|
metafile->read_state != NULL) {
|
|
return;
|
|
}
|
|
#ifdef DEBUG_METADATA_IO
|
|
g_message ("async_read_start: %s", metafile->directory_uri);
|
|
#endif
|
|
pending_reads = g_list_prepend (pending_reads, metafile);
|
|
schedule_next_read ();
|
|
}
|
|
|
|
static void
|
|
async_read_done (NautilusMetafile *metafile)
|
|
{
|
|
#ifdef DEBUG_METADATA_IO
|
|
g_message ("async_read_done: %s", metafile->directory_uri);
|
|
#endif
|
|
--num_reads_in_progress;
|
|
schedule_next_read ();
|
|
}
|
|
|
|
static void
|
|
async_read_cancel (NautilusMetafile *metafile)
|
|
{
|
|
GList* node;
|
|
|
|
#ifdef DEBUG_METADATA_IO
|
|
g_message ("async_read_cancel: %s", metafile->directory_uri);
|
|
#endif
|
|
node = g_list_find (pending_reads, metafile);
|
|
|
|
if (node != NULL) {
|
|
pending_reads = g_list_remove_link (pending_reads, node);
|
|
g_list_free_1 (node);
|
|
}
|
|
|
|
if (metafile->read_state != NULL) {
|
|
metafile_read_cancel (metafile);
|
|
async_read_done (metafile);
|
|
}
|
|
|
|
}
|
|
|
|
gboolean
|
|
nautilus_metafile_is_read (NautilusMetafile *metafile)
|
|
{
|
|
return metafile->is_read;
|
|
}
|
|
|
|
char *
|
|
nautilus_metafile_get (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *key,
|
|
const char *default_value)
|
|
{
|
|
return get_file_metadata (metafile, file_name, key, default_value);
|
|
}
|
|
|
|
GList *
|
|
nautilus_metafile_get_list (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *list_key,
|
|
const char *list_subkey)
|
|
{
|
|
return get_file_metadata_list (metafile, file_name, list_key, list_subkey);
|
|
}
|
|
|
|
|
|
void
|
|
nautilus_metafile_set (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *key,
|
|
const char *default_value,
|
|
const char *metadata)
|
|
{
|
|
if (set_file_metadata (metafile, file_name, key, default_value, metadata)) {
|
|
call_metafile_changed_for_one_file (metafile, file_name);
|
|
}
|
|
}
|
|
|
|
void
|
|
nautilus_metafile_set_list (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *list_key,
|
|
const char *list_subkey,
|
|
GList *list)
|
|
{
|
|
if (set_file_metadata_list (metafile, file_name, list_key, list_subkey, list)) {
|
|
call_metafile_changed_for_one_file (metafile, file_name);
|
|
}
|
|
}
|
|
|
|
void
|
|
nautilus_metafile_copy (NautilusMetafile *source_metafile,
|
|
const char *source_file_name,
|
|
const char *destination_directory_uri,
|
|
const char *destination_file_name)
|
|
{
|
|
NautilusMetafile *destination_metafile;
|
|
|
|
destination_metafile = nautilus_metafile_get_for_uri (destination_directory_uri);
|
|
|
|
copy_file_metadata (source_metafile, source_file_name,
|
|
destination_metafile, destination_file_name);
|
|
|
|
g_object_unref (destination_metafile);
|
|
}
|
|
|
|
|
|
void
|
|
nautilus_metafile_remove (NautilusMetafile *metafile,
|
|
const char *file_name)
|
|
{
|
|
remove_file_metadata (metafile, file_name);
|
|
}
|
|
|
|
void
|
|
nautilus_metafile_rename (NautilusMetafile *metafile,
|
|
const char *old_file_name,
|
|
const char *new_file_name)
|
|
{
|
|
rename_file_metadata (metafile, old_file_name, new_file_name);
|
|
}
|
|
|
|
void
|
|
nautilus_metafile_rename_directory (NautilusMetafile *metafile,
|
|
const char *new_directory_uri)
|
|
{
|
|
nautilus_metafile_set_directory_uri (metafile, new_directory_uri);
|
|
}
|
|
|
|
void
|
|
nautilus_metafile_load (NautilusMetafile *metafile)
|
|
{
|
|
async_read_start (metafile);
|
|
}
|
|
|
|
static gboolean
|
|
notify_metafile_ready_idle (gpointer user_data)
|
|
{
|
|
NautilusMetafile *metafile;
|
|
metafile = user_data;
|
|
|
|
g_signal_emit (metafile, signals[READY], 0);
|
|
g_object_unref (metafile);
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
nautilus_metafile_notify_metafile_ready (NautilusMetafile *metafile, gboolean in_idle)
|
|
{
|
|
if (in_idle) {
|
|
g_idle_add (notify_metafile_ready_idle, g_object_ref (metafile));
|
|
} else {
|
|
g_signal_emit (metafile, signals[READY], 0);
|
|
}
|
|
}
|
|
|
|
typedef struct {
|
|
NautilusMetafile *metafile;
|
|
GList *file_names;
|
|
} ChangedData;
|
|
|
|
static gboolean
|
|
metafile_changed_idle (gpointer user_data)
|
|
{
|
|
ChangedData *data;
|
|
|
|
data = user_data;
|
|
|
|
g_signal_emit (data->metafile, signals[CHANGED], 0, data->file_names);
|
|
|
|
g_object_unref (data->metafile);
|
|
eel_g_list_free_deep (data->file_names);
|
|
g_free (data);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
call_metafile_changed (NautilusMetafile *metafile,
|
|
GList *file_names)
|
|
{
|
|
ChangedData *data;
|
|
|
|
data = g_new (ChangedData, 1);
|
|
data->metafile = g_object_ref (metafile);
|
|
data->file_names = eel_g_str_list_copy (file_names);
|
|
|
|
g_idle_add (metafile_changed_idle, data);
|
|
}
|
|
|
|
#if 0
|
|
static void
|
|
file_list_filler_ghfunc (gpointer key,
|
|
gpointer value,
|
|
gpointer user_data)
|
|
{
|
|
Nautilus_FileNameList *file_names;
|
|
|
|
file_names = user_data;
|
|
|
|
file_names->_buffer [file_names->_length] = key;
|
|
|
|
++file_names->_length;
|
|
}
|
|
|
|
void
|
|
call_metafile_changed_for_all_files_mentioned_in_metafile (NautilusMetafile *metafile)
|
|
{
|
|
CORBA_unsigned_long len;
|
|
Nautilus_FileNameList file_names;
|
|
|
|
len = g_hash_table_size (metafile->node_hash);
|
|
|
|
if (len > 0) {
|
|
file_names._maximum = len;
|
|
file_names._length = 0;
|
|
file_names._buffer = g_new (CORBA_char *, len);
|
|
|
|
g_hash_table_foreach (metafile->node_hash,
|
|
file_list_filler_ghfunc,
|
|
&file_names);
|
|
|
|
call_metafile_changed (metafile, &file_names);
|
|
|
|
g_free (file_names._buffer);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
call_metafile_changed_for_one_file (NautilusMetafile *metafile,
|
|
const char *file_name)
|
|
{
|
|
GList l;
|
|
|
|
l.next = NULL;
|
|
l.prev = NULL;
|
|
l.data = (void *)file_name;
|
|
|
|
call_metafile_changed (metafile, &l);
|
|
}
|
|
|
|
typedef struct {
|
|
gboolean is_list;
|
|
union {
|
|
char *string;
|
|
GList *string_list;
|
|
} value;
|
|
char *default_value;
|
|
} MetadataValue;
|
|
|
|
static char *
|
|
get_metadata_from_node (xmlNode *node,
|
|
const char *key,
|
|
const char *default_metadata)
|
|
{
|
|
xmlChar *property;
|
|
char *result;
|
|
|
|
g_return_val_if_fail (key != NULL, NULL);
|
|
g_return_val_if_fail (key[0] != '\0', NULL);
|
|
|
|
property = xmlGetProp (node, key);
|
|
if (property == NULL) {
|
|
result = g_strdup (default_metadata);
|
|
} else {
|
|
result = g_strdup (property);
|
|
}
|
|
xmlFree (property);
|
|
|
|
return result;
|
|
}
|
|
|
|
static GList *
|
|
get_metadata_list_from_node (xmlNode *node,
|
|
const char *list_key,
|
|
const char *list_subkey)
|
|
{
|
|
return eel_xml_get_property_for_children
|
|
(node, list_key, list_subkey);
|
|
}
|
|
|
|
static xmlNode *
|
|
create_metafile_root (NautilusMetafile *metafile)
|
|
{
|
|
xmlNode *root;
|
|
|
|
if (metafile->xml == NULL) {
|
|
set_metafile_contents (metafile, xmlNewDoc (METAFILE_XML_VERSION));
|
|
}
|
|
root = xmlDocGetRootElement (metafile->xml);
|
|
if (root == NULL) {
|
|
root = xmlNewDocNode (metafile->xml, NULL, "directory", NULL);
|
|
xmlDocSetRootElement (metafile->xml, root);
|
|
}
|
|
|
|
return root;
|
|
}
|
|
|
|
static xmlNode *
|
|
get_file_node (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
gboolean create)
|
|
{
|
|
GHashTable *hash;
|
|
xmlNode *root, *node;
|
|
char *escaped_file_name;
|
|
|
|
g_assert (NAUTILUS_IS_METAFILE (metafile));
|
|
|
|
hash = metafile->node_hash;
|
|
node = g_hash_table_lookup (hash, file_name);
|
|
if (node != NULL) {
|
|
return node;
|
|
}
|
|
|
|
if (create) {
|
|
root = create_metafile_root (metafile);
|
|
node = xmlNewChild (root, NULL, "file", NULL);
|
|
escaped_file_name = g_uri_escape_string (file_name, NULL, 0);
|
|
xmlSetProp (node, "name", escaped_file_name);
|
|
g_free (escaped_file_name);
|
|
g_hash_table_insert (hash, xmlMemStrdup (file_name), node);
|
|
return node;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
set_file_node_timestamp (xmlNode *node)
|
|
{
|
|
char time_str[21];
|
|
|
|
/* 2^64 turns out to be 20 characters */
|
|
snprintf (time_str, 20, "%ld", time (NULL));
|
|
time_str [20] = '\0';
|
|
xmlSetProp (node, "timestamp", time_str);
|
|
}
|
|
|
|
static char *
|
|
get_metadata_string_from_metafile (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *key,
|
|
const char *default_metadata)
|
|
{
|
|
xmlNode *node;
|
|
|
|
node = get_file_node (metafile, file_name, FALSE);
|
|
return get_metadata_from_node (node, key, default_metadata);
|
|
}
|
|
|
|
static GList *
|
|
get_metadata_list_from_metafile (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *list_key,
|
|
const char *list_subkey)
|
|
{
|
|
xmlNode *node;
|
|
|
|
node = get_file_node (metafile, file_name, FALSE);
|
|
return get_metadata_list_from_node (node, list_key, list_subkey);
|
|
}
|
|
|
|
static gboolean
|
|
set_metadata_string_in_metafile (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *key,
|
|
const char *default_metadata,
|
|
const char *metadata)
|
|
{
|
|
char *old_metadata;
|
|
gboolean old_metadata_matches;
|
|
const char *value;
|
|
xmlNode *node;
|
|
xmlAttr *property_node;
|
|
|
|
/* If the data in the metafile is already correct, do nothing. */
|
|
old_metadata = get_file_metadata
|
|
(metafile, file_name, key, default_metadata);
|
|
|
|
old_metadata_matches = eel_strcmp (old_metadata, metadata) == 0;
|
|
g_free (old_metadata);
|
|
if (old_metadata_matches) {
|
|
return FALSE;
|
|
}
|
|
|
|
/* Data that matches the default is represented in the tree by
|
|
* the lack of an attribute.
|
|
*/
|
|
if (eel_strcmp (default_metadata, metadata) == 0) {
|
|
value = NULL;
|
|
} else {
|
|
value = metadata;
|
|
}
|
|
|
|
/* Get or create the node. */
|
|
node = get_file_node (metafile, file_name, value != NULL);
|
|
|
|
if (node != NULL) {
|
|
/* Set the timestamp */
|
|
set_file_node_timestamp (node);
|
|
|
|
/* Add or remove a property node. */
|
|
property_node = xmlSetProp (node, key, value);
|
|
if (value == NULL) {
|
|
xmlRemoveProp (property_node);
|
|
}
|
|
}
|
|
|
|
/* Since we changed the tree, arrange for it to be written. */
|
|
directory_request_write_metafile (metafile);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
set_metadata_list_in_metafile (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *list_key,
|
|
const char *list_subkey,
|
|
GList *list)
|
|
{
|
|
xmlNode *node, *child, *next;
|
|
gboolean changed;
|
|
GList *p;
|
|
xmlChar *property;
|
|
|
|
/* Get or create the node. */
|
|
node = get_file_node (metafile, file_name, list != NULL);
|
|
|
|
/* Work with the list. */
|
|
changed = FALSE;
|
|
if (node == NULL) {
|
|
g_assert (list == NULL);
|
|
} else {
|
|
p = list;
|
|
|
|
/* Remove any nodes except the ones we expect. */
|
|
for (child = eel_xml_get_children (node);
|
|
child != NULL;
|
|
child = next) {
|
|
|
|
next = child->next;
|
|
if (strcmp (child->name, list_key) == 0) {
|
|
property = xmlGetProp (child, list_subkey);
|
|
if (property != NULL && p != NULL
|
|
&& strcmp (property, (char *) p->data) == 0) {
|
|
p = p->next;
|
|
} else {
|
|
xmlUnlinkNode (child);
|
|
xmlFreeNode (child);
|
|
changed = TRUE;
|
|
}
|
|
xmlFree (property);
|
|
}
|
|
}
|
|
|
|
/* Add any additional nodes needed. */
|
|
for (; p != NULL; p = p->next) {
|
|
child = xmlNewChild (node, NULL, list_key, NULL);
|
|
xmlSetProp (child, list_subkey, p->data);
|
|
changed = TRUE;
|
|
}
|
|
|
|
/* Set the timestamp */
|
|
set_file_node_timestamp (node);
|
|
}
|
|
|
|
if (!changed) {
|
|
return FALSE;
|
|
}
|
|
|
|
directory_request_write_metafile (metafile);
|
|
return TRUE;
|
|
}
|
|
|
|
static MetadataValue *
|
|
metadata_value_new (const char *default_metadata, const char *metadata)
|
|
{
|
|
MetadataValue *value;
|
|
|
|
value = g_new0 (MetadataValue, 1);
|
|
|
|
value->default_value = g_strdup (default_metadata);
|
|
value->value.string = g_strdup (metadata);
|
|
|
|
return value;
|
|
}
|
|
|
|
static MetadataValue *
|
|
metadata_value_new_list (GList *metadata)
|
|
{
|
|
MetadataValue *value;
|
|
|
|
value = g_new0 (MetadataValue, 1);
|
|
|
|
value->is_list = TRUE;
|
|
value->value.string_list = eel_g_str_list_copy (metadata);
|
|
|
|
return value;
|
|
}
|
|
|
|
static void
|
|
metadata_value_destroy (MetadataValue *value)
|
|
{
|
|
if (value == NULL) {
|
|
return;
|
|
}
|
|
|
|
if (!value->is_list) {
|
|
g_free (value->value.string);
|
|
} else {
|
|
eel_g_list_free_deep (value->value.string_list);
|
|
}
|
|
g_free (value->default_value);
|
|
g_free (value);
|
|
}
|
|
|
|
static gboolean
|
|
metadata_value_equal (const MetadataValue *value_a,
|
|
const MetadataValue *value_b)
|
|
{
|
|
if (value_a->is_list != value_b->is_list) {
|
|
return FALSE;
|
|
}
|
|
|
|
if (!value_a->is_list) {
|
|
return eel_strcmp (value_a->value.string,
|
|
value_b->value.string) == 0
|
|
&& eel_strcmp (value_a->default_value,
|
|
value_b->default_value) == 0;
|
|
} else {
|
|
g_assert (value_a->default_value == NULL);
|
|
g_assert (value_b->default_value == NULL);
|
|
|
|
return eel_g_str_list_equal
|
|
(value_a->value.string_list,
|
|
value_b->value.string_list);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
set_metadata_in_metafile (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *key,
|
|
const char *subkey,
|
|
const MetadataValue *value)
|
|
{
|
|
gboolean changed;
|
|
|
|
if (!value->is_list) {
|
|
g_assert (subkey == NULL);
|
|
changed = set_metadata_string_in_metafile
|
|
(metafile, file_name, key,
|
|
value->default_value,
|
|
value->value.string);
|
|
} else {
|
|
g_assert (value->default_value == NULL);
|
|
changed = set_metadata_list_in_metafile
|
|
(metafile, file_name, key, subkey,
|
|
value->value.string_list);
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
|
|
static char *
|
|
get_metadata_string_from_table (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *key,
|
|
const char *default_metadata)
|
|
{
|
|
GHashTable *directory_table, *file_table;
|
|
MetadataValue *value;
|
|
|
|
/* Get the value from the hash table. */
|
|
directory_table = metafile->changes;
|
|
file_table = directory_table == NULL ? NULL
|
|
: g_hash_table_lookup (directory_table, file_name);
|
|
value = file_table == NULL ? NULL
|
|
: g_hash_table_lookup (file_table, key);
|
|
if (value == NULL) {
|
|
return g_strdup (default_metadata);
|
|
}
|
|
|
|
/* Convert it to a string. */
|
|
g_assert (!value->is_list);
|
|
if (eel_strcmp (value->value.string, value->default_value) == 0) {
|
|
return g_strdup (default_metadata);
|
|
}
|
|
return g_strdup (value->value.string);
|
|
}
|
|
|
|
static GList *
|
|
get_metadata_list_from_table (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *key,
|
|
const char *subkey)
|
|
{
|
|
GHashTable *directory_table, *file_table;
|
|
char *combined_key;
|
|
MetadataValue *value;
|
|
|
|
/* Get the value from the hash table. */
|
|
directory_table = metafile->changes;
|
|
file_table = directory_table == NULL ? NULL
|
|
: g_hash_table_lookup (directory_table, file_name);
|
|
if (file_table == NULL) {
|
|
return NULL;
|
|
}
|
|
combined_key = g_strconcat (key, "/", subkey, NULL);
|
|
value = g_hash_table_lookup (file_table, combined_key);
|
|
g_free (combined_key);
|
|
if (value == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
/* Copy the list and return it. */
|
|
g_assert (value->is_list);
|
|
return eel_g_str_list_copy (value->value.string_list);
|
|
}
|
|
|
|
static guint
|
|
str_or_null_hash (gconstpointer str)
|
|
{
|
|
return str == NULL ? 0 : g_str_hash (str);
|
|
}
|
|
|
|
static gboolean
|
|
str_or_null_equal (gconstpointer str_a, gconstpointer str_b)
|
|
{
|
|
if (str_a == NULL) {
|
|
return str_b == NULL;
|
|
}
|
|
if (str_b == NULL) {
|
|
return FALSE;
|
|
}
|
|
return g_str_equal (str_a, str_b);
|
|
}
|
|
|
|
static gboolean
|
|
set_metadata_eat_value (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *key,
|
|
const char *subkey,
|
|
MetadataValue *value)
|
|
{
|
|
GHashTable *directory_table, *file_table;
|
|
gboolean changed;
|
|
char *combined_key;
|
|
MetadataValue *old_value;
|
|
|
|
if (metafile->is_read) {
|
|
changed = set_metadata_in_metafile
|
|
(metafile, file_name, key, subkey, value);
|
|
metadata_value_destroy (value);
|
|
} else {
|
|
/* Create hash table only when we need it.
|
|
* We'll destroy it when we finish reading the metafile.
|
|
*/
|
|
directory_table = metafile->changes;
|
|
if (directory_table == NULL) {
|
|
directory_table = g_hash_table_new
|
|
(str_or_null_hash, str_or_null_equal);
|
|
metafile->changes = directory_table;
|
|
}
|
|
file_table = g_hash_table_lookup (directory_table, file_name);
|
|
if (file_table == NULL) {
|
|
file_table = g_hash_table_new (g_str_hash, g_str_equal);
|
|
g_hash_table_insert (directory_table,
|
|
g_strdup (file_name), file_table);
|
|
}
|
|
|
|
/* Find the entry in the hash table. */
|
|
if (subkey == NULL) {
|
|
combined_key = g_strdup (key);
|
|
} else {
|
|
combined_key = g_strconcat (key, "/", subkey, NULL);
|
|
}
|
|
old_value = g_hash_table_lookup (file_table, combined_key);
|
|
|
|
/* Put the change into the hash. Delete the old change. */
|
|
changed = old_value == NULL || !metadata_value_equal (old_value, value);
|
|
if (changed) {
|
|
g_hash_table_insert (file_table, combined_key, value);
|
|
if (old_value != NULL) {
|
|
/* The hash table keeps the old key. */
|
|
g_free (combined_key);
|
|
metadata_value_destroy (old_value);
|
|
}
|
|
} else {
|
|
g_free (combined_key);
|
|
metadata_value_destroy (value);
|
|
}
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
|
|
static void
|
|
free_file_table_entry (gpointer key, gpointer value, gpointer user_data)
|
|
{
|
|
g_assert (user_data == NULL);
|
|
|
|
g_free (key);
|
|
metadata_value_destroy (value);
|
|
}
|
|
|
|
static void
|
|
free_directory_table_entry (gpointer key, gpointer value, gpointer user_data)
|
|
{
|
|
g_assert (user_data == NULL);
|
|
g_assert (value != NULL);
|
|
|
|
g_free (key);
|
|
g_hash_table_foreach (value, free_file_table_entry, NULL);
|
|
g_hash_table_destroy (value);
|
|
}
|
|
|
|
static void
|
|
destroy_metadata_changes_hash_table (GHashTable *directory_table)
|
|
{
|
|
if (directory_table == NULL) {
|
|
return;
|
|
}
|
|
g_hash_table_foreach (directory_table, free_directory_table_entry, NULL);
|
|
g_hash_table_destroy (directory_table);
|
|
}
|
|
|
|
static void
|
|
destroy_xml_string_key (gpointer key, gpointer value, gpointer user_data)
|
|
{
|
|
g_assert (key != NULL);
|
|
g_assert (user_data == NULL);
|
|
g_assert (value != NULL);
|
|
|
|
xmlFree (key);
|
|
}
|
|
|
|
static void
|
|
metafile_free_metadata (NautilusMetafile *metafile)
|
|
{
|
|
g_return_if_fail (NAUTILUS_IS_METAFILE (metafile));
|
|
|
|
g_hash_table_foreach (metafile->node_hash,
|
|
destroy_xml_string_key, NULL);
|
|
xmlFreeDoc (metafile->xml);
|
|
destroy_metadata_changes_hash_table (metafile->changes);
|
|
}
|
|
|
|
static char *
|
|
get_file_metadata (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *key,
|
|
const char *default_metadata)
|
|
{
|
|
g_return_val_if_fail (NAUTILUS_IS_METAFILE (metafile), NULL);
|
|
g_return_val_if_fail (!eel_str_is_empty (file_name), NULL);
|
|
g_return_val_if_fail (!eel_str_is_empty (key), NULL);
|
|
|
|
if (metafile->is_read) {
|
|
return get_metadata_string_from_metafile
|
|
(metafile, file_name, key, default_metadata);
|
|
} else {
|
|
return get_metadata_string_from_table
|
|
(metafile, file_name, key, default_metadata);
|
|
}
|
|
}
|
|
|
|
static GList *
|
|
get_file_metadata_list (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *list_key,
|
|
const char *list_subkey)
|
|
{
|
|
g_return_val_if_fail (NAUTILUS_IS_METAFILE (metafile), NULL);
|
|
g_return_val_if_fail (!eel_str_is_empty (file_name), NULL);
|
|
g_return_val_if_fail (!eel_str_is_empty (list_key), NULL);
|
|
g_return_val_if_fail (!eel_str_is_empty (list_subkey), NULL);
|
|
|
|
if (metafile->is_read) {
|
|
return get_metadata_list_from_metafile
|
|
(metafile, file_name, list_key, list_subkey);
|
|
} else {
|
|
return get_metadata_list_from_table
|
|
(metafile, file_name, list_key, list_subkey);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
set_file_metadata (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *key,
|
|
const char *default_metadata,
|
|
const char *metadata)
|
|
{
|
|
MetadataValue *value;
|
|
|
|
g_return_val_if_fail (NAUTILUS_IS_METAFILE (metafile), FALSE);
|
|
g_return_val_if_fail (!eel_str_is_empty (file_name), FALSE);
|
|
g_return_val_if_fail (!eel_str_is_empty (key), FALSE);
|
|
|
|
if (metafile->is_read) {
|
|
return set_metadata_string_in_metafile (metafile, file_name, key,
|
|
default_metadata, metadata);
|
|
} else {
|
|
value = metadata_value_new (default_metadata, metadata);
|
|
return set_metadata_eat_value (metafile, file_name,
|
|
key, NULL, value);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
set_file_metadata_list (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
const char *list_key,
|
|
const char *list_subkey,
|
|
GList *list)
|
|
{
|
|
MetadataValue *value;
|
|
|
|
g_return_val_if_fail (NAUTILUS_IS_METAFILE (metafile), FALSE);
|
|
g_return_val_if_fail (!eel_str_is_empty (file_name), FALSE);
|
|
g_return_val_if_fail (!eel_str_is_empty (list_key), FALSE);
|
|
g_return_val_if_fail (!eel_str_is_empty (list_subkey), FALSE);
|
|
|
|
if (metafile->is_read) {
|
|
return set_metadata_list_in_metafile (metafile, file_name,
|
|
list_key, list_subkey, list);
|
|
} else {
|
|
value = metadata_value_new_list (list);
|
|
return set_metadata_eat_value (metafile, file_name,
|
|
list_key, list_subkey, value);
|
|
}
|
|
}
|
|
|
|
static char *
|
|
metafile_get_file_uri (NautilusMetafile *metafile,
|
|
const char *file_name)
|
|
{
|
|
char *escaped_file_name, *uri;
|
|
|
|
g_assert (NAUTILUS_IS_METAFILE (metafile));
|
|
g_assert (file_name != NULL);
|
|
|
|
escaped_file_name = g_uri_escape_string (file_name, G_URI_RESERVED_CHARS_ALLOWED_IN_PATH, FALSE);
|
|
|
|
uri = g_build_filename (metafile->directory_uri, escaped_file_name, NULL);
|
|
g_free (escaped_file_name);
|
|
return uri;
|
|
}
|
|
|
|
static void
|
|
rename_file_metadata (NautilusMetafile *metafile,
|
|
const char *old_file_name,
|
|
const char *new_file_name)
|
|
{
|
|
gboolean found;
|
|
gpointer key, value;
|
|
xmlNode *file_node;
|
|
GHashTable *hash;
|
|
char *old_file_uri, *new_file_uri;
|
|
char *escaped;
|
|
|
|
g_assert (NAUTILUS_IS_METAFILE (metafile));
|
|
g_assert (old_file_name != NULL);
|
|
g_assert (new_file_name != NULL);
|
|
|
|
remove_file_metadata (metafile, new_file_name);
|
|
|
|
if (metafile->is_read) {
|
|
/* Move data in XML document if present. */
|
|
hash = metafile->node_hash;
|
|
found = g_hash_table_lookup_extended
|
|
(hash, old_file_name, &key, &value);
|
|
if (found) {
|
|
g_assert (strcmp ((const char *) key, old_file_name) == 0);
|
|
file_node = value;
|
|
g_hash_table_remove (hash,
|
|
old_file_name);
|
|
xmlFree (key);
|
|
g_hash_table_insert (hash,
|
|
xmlMemStrdup (new_file_name), value);
|
|
escaped = g_uri_escape_string (new_file_name, NULL, FALSE);
|
|
xmlSetProp (file_node, "name", escaped);
|
|
g_free (escaped);
|
|
directory_request_write_metafile (metafile);
|
|
}
|
|
} else {
|
|
/* Move data in hash table. */
|
|
/* FIXME: If there's data for this file in the
|
|
* metafile on disk, this doesn't arrange for that
|
|
* data to be moved to the new name.
|
|
*/
|
|
hash = metafile->changes;
|
|
found = g_hash_table_lookup_extended
|
|
(hash, old_file_name, &key, &value);
|
|
if (found) {
|
|
g_hash_table_remove (hash, old_file_name);
|
|
g_free (key);
|
|
g_hash_table_insert (hash, g_strdup (new_file_name), value);
|
|
}
|
|
}
|
|
|
|
/* Rename the thumbnails for the file, if any. */
|
|
old_file_uri = metafile_get_file_uri (metafile, old_file_name);
|
|
new_file_uri = metafile_get_file_uri (metafile, new_file_name);
|
|
nautilus_update_thumbnail_file_renamed (old_file_uri, new_file_uri);
|
|
g_free (old_file_uri);
|
|
g_free (new_file_uri);
|
|
}
|
|
|
|
typedef struct {
|
|
NautilusMetafile *metafile;
|
|
const char *file_name;
|
|
} ChangeContext;
|
|
|
|
static void
|
|
apply_one_change (gpointer key, gpointer value, gpointer callback_data)
|
|
{
|
|
ChangeContext *context;
|
|
const char *hash_table_key, *separator, *metadata_key, *subkey;
|
|
char *key_prefix;
|
|
|
|
g_assert (key != NULL);
|
|
g_assert (value != NULL);
|
|
g_assert (callback_data != NULL);
|
|
|
|
context = callback_data;
|
|
|
|
/* Break the key in half. */
|
|
hash_table_key = key;
|
|
separator = strchr (hash_table_key, '/');
|
|
if (separator == NULL) {
|
|
key_prefix = NULL;
|
|
metadata_key = hash_table_key;
|
|
subkey = NULL;
|
|
} else {
|
|
key_prefix = g_strndup (hash_table_key, separator - hash_table_key);
|
|
metadata_key = key_prefix;
|
|
subkey = separator + 1;
|
|
}
|
|
|
|
/* Set the metadata. */
|
|
set_metadata_in_metafile (context->metafile, context->file_name,
|
|
metadata_key, subkey, value);
|
|
g_free (key_prefix);
|
|
}
|
|
|
|
static void
|
|
apply_file_changes (NautilusMetafile *metafile,
|
|
const char *file_name,
|
|
GHashTable *changes)
|
|
{
|
|
ChangeContext context;
|
|
|
|
g_assert (NAUTILUS_IS_METAFILE (metafile));
|
|
g_assert (file_name != NULL);
|
|
g_assert (changes != NULL);
|
|
|
|
context.metafile = metafile;
|
|
context.file_name = file_name;
|
|
|
|
g_hash_table_foreach (changes, apply_one_change, &context);
|
|
}
|
|
|
|
static void
|
|
apply_one_file_changes (gpointer key, gpointer value, gpointer callback_data)
|
|
{
|
|
apply_file_changes (callback_data, key, value);
|
|
g_hash_table_destroy (value);
|
|
}
|
|
|
|
static void
|
|
nautilus_metafile_apply_pending_changes (NautilusMetafile *metafile)
|
|
{
|
|
if (metafile->changes == NULL) {
|
|
return;
|
|
}
|
|
g_hash_table_foreach (metafile->changes,
|
|
apply_one_file_changes, metafile);
|
|
g_hash_table_destroy (metafile->changes);
|
|
metafile->changes = NULL;
|
|
}
|
|
|
|
static void
|
|
real_copy_file_metadata (NautilusMetafile *source_metafile,
|
|
const char *source_file_name,
|
|
NautilusMetafile *destination_metafile,
|
|
const char *destination_file_name)
|
|
{
|
|
xmlNodePtr source_node, node, root;
|
|
GHashTable *hash, *changes;
|
|
char *escaped;
|
|
|
|
real_remove_file_metadata (destination_metafile, destination_file_name);
|
|
g_assert (get_file_node (destination_metafile, destination_file_name, FALSE) == NULL);
|
|
|
|
source_node = get_file_node (source_metafile, source_file_name, FALSE);
|
|
if (source_node != NULL) {
|
|
node = xmlCopyNode (source_node, TRUE);
|
|
root = create_metafile_root (destination_metafile);
|
|
xmlAddChild (root, node);
|
|
escaped = g_uri_escape_string (destination_file_name, NULL, FALSE);
|
|
xmlSetProp (node, "name", escaped);
|
|
g_free (escaped);
|
|
set_file_node_timestamp (node);
|
|
g_hash_table_insert (destination_metafile->node_hash,
|
|
xmlMemStrdup (destination_file_name), node);
|
|
directory_request_write_metafile (destination_metafile);
|
|
}
|
|
|
|
hash = source_metafile->changes;
|
|
if (hash != NULL) {
|
|
changes = g_hash_table_lookup (hash, source_file_name);
|
|
if (changes != NULL) {
|
|
apply_file_changes (destination_metafile,
|
|
destination_file_name,
|
|
changes);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
copy_file_metadata (NautilusMetafile *source_metafile,
|
|
const char *source_file_name,
|
|
NautilusMetafile *destination_metafile,
|
|
const char *destination_file_name)
|
|
{
|
|
char *source_file_uri;
|
|
char *destination_file_uri;
|
|
|
|
g_assert (NAUTILUS_IS_METAFILE (source_metafile));
|
|
g_assert (source_file_name != NULL);
|
|
g_assert (NAUTILUS_IS_METAFILE (destination_metafile));
|
|
g_assert (destination_file_name != NULL);
|
|
|
|
if (source_metafile->is_read
|
|
&& destination_metafile->is_read) {
|
|
real_copy_file_metadata (source_metafile,
|
|
source_file_name,
|
|
destination_metafile,
|
|
destination_file_name);
|
|
} else {
|
|
nautilus_metadata_schedule_copy (source_metafile,
|
|
source_file_name,
|
|
destination_metafile,
|
|
destination_file_name);
|
|
}
|
|
|
|
/* Copy the thumbnail for the file, if any. */
|
|
source_file_uri = metafile_get_file_uri (source_metafile, source_file_name);
|
|
destination_file_uri = metafile_get_file_uri (destination_metafile, destination_file_name);
|
|
nautilus_update_thumbnail_file_copied (source_file_uri, destination_file_uri);
|
|
g_free (source_file_uri);
|
|
g_free (destination_file_uri);
|
|
}
|
|
|
|
static void
|
|
real_remove_file_metadata (NautilusMetafile *metafile,
|
|
const char *file_name)
|
|
{
|
|
gboolean found;
|
|
gpointer key, value;
|
|
xmlNode *file_node;
|
|
GHashTable *hash;
|
|
|
|
g_return_if_fail (NAUTILUS_IS_METAFILE (metafile));
|
|
g_return_if_fail (file_name != NULL);
|
|
|
|
if (metafile->is_read) {
|
|
/* Remove data in XML document if present. */
|
|
hash = metafile->node_hash;
|
|
found = g_hash_table_lookup_extended
|
|
(hash, file_name, &key, &value);
|
|
if (found) {
|
|
g_assert (strcmp ((const char *) key, file_name) == 0);
|
|
file_node = value;
|
|
g_hash_table_remove (hash,
|
|
file_name);
|
|
xmlFree (key);
|
|
xmlUnlinkNode (file_node);
|
|
xmlFreeNode (file_node);
|
|
directory_request_write_metafile (metafile);
|
|
}
|
|
} else {
|
|
/* Remove data from hash table. */
|
|
/* FIXME: If there's data for this file on the
|
|
* metafile on disk, this does not arrange for it to
|
|
* be removed when the metafile is later read.
|
|
*/
|
|
hash = metafile->changes;
|
|
if (hash != NULL) {
|
|
found = g_hash_table_lookup_extended
|
|
(hash, file_name, &key, &value);
|
|
if (found) {
|
|
g_hash_table_remove (hash, file_name);
|
|
g_free (key);
|
|
destroy_metadata_changes_hash_table (value);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
remove_file_metadata (NautilusMetafile *metafile,
|
|
const char *file_name)
|
|
{
|
|
char *file_uri;
|
|
|
|
g_assert (NAUTILUS_IS_METAFILE (metafile));
|
|
g_assert (file_name != NULL);
|
|
|
|
if (nautilus_metadata_has_scheduled_copy (metafile, file_name)) {
|
|
nautilus_metadata_schedule_removal (metafile, file_name);
|
|
} else {
|
|
real_remove_file_metadata (metafile, file_name);
|
|
}
|
|
|
|
/* Delete the thumbnails for the file, if any. */
|
|
file_uri = metafile_get_file_uri (metafile, file_name);
|
|
nautilus_remove_thumbnail_for_file (file_uri);
|
|
g_free (file_uri);
|
|
}
|
|
|
|
static void
|
|
set_metafile_contents (NautilusMetafile *metafile,
|
|
xmlDocPtr metafile_contents)
|
|
{
|
|
GHashTable *hash;
|
|
xmlNodePtr node;
|
|
xmlChar *name;
|
|
char *unescaped_name;
|
|
|
|
g_assert (NAUTILUS_IS_METAFILE (metafile));
|
|
g_assert (metafile->xml == NULL);
|
|
|
|
if (metafile_contents == NULL) {
|
|
return;
|
|
}
|
|
|
|
metafile->xml = metafile_contents;
|
|
|
|
/* Populate the node hash table. */
|
|
hash = metafile->node_hash;
|
|
for (node = eel_xml_get_root_children (metafile_contents);
|
|
node != NULL; node = node->next) {
|
|
if (strcmp (node->name, "file") == 0) {
|
|
name = xmlGetProp (node, "name");
|
|
unescaped_name = g_uri_unescape_string (name, "/");
|
|
xmlFree (name);
|
|
if (unescaped_name == NULL ||
|
|
g_hash_table_lookup (hash, unescaped_name) != NULL) {
|
|
/* FIXME: Should we delete duplicate nodes as we discover them? */
|
|
g_free (unescaped_name);
|
|
} else {
|
|
g_hash_table_insert (hash, unescaped_name, node);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
metafile_read_cancel (NautilusMetafile *metafile)
|
|
{
|
|
if (metafile->read_state != NULL) {
|
|
g_cancellable_cancel (metafile->read_state->cancellable);
|
|
metafile->read_state->metafile = NULL;
|
|
metafile->read_state = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
metafile_read_state_free (MetafileReadState *state)
|
|
{
|
|
if (state == NULL) {
|
|
return;
|
|
}
|
|
|
|
g_object_unref (state->cancellable);
|
|
g_free (state);
|
|
}
|
|
|
|
static void
|
|
metafile_read_mark_done (NautilusMetafile *metafile, gboolean callback_in_idle)
|
|
{
|
|
metafile_read_state_free (metafile->read_state);
|
|
metafile->read_state = NULL;
|
|
|
|
metafile->is_read = TRUE;
|
|
|
|
/* Move over the changes to the metafile that were in the hash table. */
|
|
nautilus_metafile_apply_pending_changes (metafile);
|
|
|
|
/* Tell change-watchers that we have update information. */
|
|
nautilus_metafile_notify_metafile_ready (metafile, callback_in_idle);
|
|
|
|
async_read_done (metafile);
|
|
}
|
|
|
|
static void
|
|
metafile_read_done_callback (GObject *source_object,
|
|
GAsyncResult *res,
|
|
gpointer user_data)
|
|
{
|
|
MetafileReadState *state;
|
|
NautilusMetafile *metafile;
|
|
gsize file_size;
|
|
char *file_contents;
|
|
|
|
state = user_data;
|
|
|
|
if (state->metafile == NULL) {
|
|
/* Operation was cancelled. Bail out */
|
|
metafile_read_state_free (state);
|
|
return;
|
|
}
|
|
|
|
metafile = state->metafile;
|
|
g_assert (metafile->xml == NULL);
|
|
|
|
if (g_file_load_contents_finish (G_FILE (source_object),
|
|
res,
|
|
&file_contents, &file_size,
|
|
NULL, NULL)) {
|
|
set_metafile_contents (metafile, xmlParseMemory (file_contents, file_size));
|
|
g_free (file_contents);
|
|
}
|
|
|
|
metafile_read_mark_done (metafile, FALSE);
|
|
|
|
nautilus_metadata_process_ready_copies ();
|
|
nautilus_metadata_process_ready_removals ();
|
|
}
|
|
|
|
static void
|
|
metafile_read_restart (NautilusMetafile *metafile)
|
|
{
|
|
GFile *location;
|
|
MetafileReadState *state;
|
|
|
|
state = g_new0 (MetafileReadState, 1);
|
|
state->metafile = metafile;
|
|
state->cancellable = g_cancellable_new ();
|
|
|
|
metafile->read_state = state;
|
|
|
|
location = g_file_new_for_uri (metafile->private_uri);
|
|
|
|
g_file_load_contents_async (location, state->cancellable,
|
|
metafile_read_done_callback, state);
|
|
|
|
g_object_unref (location);
|
|
}
|
|
|
|
static gboolean
|
|
allow_metafile (NautilusMetafile *metafile)
|
|
{
|
|
const char *uri;
|
|
|
|
g_assert (NAUTILUS_IS_METAFILE (metafile));
|
|
|
|
/* Note that this inhibits both reading and writing metadata
|
|
* completely. In the future we may want to inhibit writing to
|
|
* the real directory while allowing parallel-directory
|
|
* metadata.
|
|
*/
|
|
|
|
/* For now, hard-code these schemes. Perhaps we should
|
|
* hardcode the schemes that are good for metadata instead of
|
|
* the schemes that are bad for it.
|
|
*/
|
|
/* FIXME bugzilla.gnome.org 42434:
|
|
* We need to handle this in a better way. Perhaps a
|
|
* better way can wait until we have support for metadata
|
|
* access inside gnome-vfs.
|
|
*/
|
|
uri = metafile->directory_uri;
|
|
if (eel_uri_is_search (uri) ||
|
|
eel_istr_has_prefix (uri, "gnome-help:") ||
|
|
eel_istr_has_prefix (uri, "help:")
|
|
) {
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
metafile_read_start (NautilusMetafile *metafile)
|
|
{
|
|
g_assert (NAUTILUS_IS_METAFILE (metafile));
|
|
|
|
if (metafile->is_read ||
|
|
metafile->read_state != NULL) {
|
|
return;
|
|
}
|
|
|
|
if (!allow_metafile (metafile)) {
|
|
metafile_read_mark_done (metafile, TRUE);
|
|
} else {
|
|
metafile_read_restart (metafile);
|
|
}
|
|
}
|
|
|
|
static void
|
|
metafile_write_done (NautilusMetafile *metafile)
|
|
{
|
|
if (metafile->write_state->write_again) {
|
|
metafile_write_start (metafile);
|
|
return;
|
|
}
|
|
|
|
xmlFree (metafile->write_state->buffer);
|
|
g_free (metafile->write_state);
|
|
metafile->write_state = NULL;
|
|
g_object_unref (metafile);
|
|
}
|
|
|
|
static void
|
|
metafile_write_failed (NautilusMetafile *metafile)
|
|
{
|
|
metafile_write_done (metafile);
|
|
}
|
|
|
|
static void
|
|
metafile_write_succeeded (NautilusMetafile *metafile)
|
|
{
|
|
metafile_write_done (metafile);
|
|
}
|
|
|
|
static int
|
|
write_all (int fd, const char *buffer, int size)
|
|
{
|
|
int size_remaining;
|
|
const char *p;
|
|
ssize_t result;
|
|
|
|
p = buffer;
|
|
size_remaining = size;
|
|
while (size_remaining != 0) {
|
|
result = write (fd, p, size_remaining);
|
|
if (result <= 0 || result > size_remaining) {
|
|
return -1;
|
|
}
|
|
p += result;
|
|
size_remaining -= result;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static void
|
|
metafile_write_local (NautilusMetafile *metafile,
|
|
const char *metafile_path)
|
|
{
|
|
char *temp_path;
|
|
int fd;
|
|
gboolean failed;
|
|
|
|
/* Do this synchronously, since it's likely to be local. Use
|
|
* mkstemp to prevent security exploits by making symbolic
|
|
* links named .nautilus-metafile.xml.
|
|
*/
|
|
|
|
temp_path = g_strconcat (metafile_path, "XXXXXX", NULL);
|
|
failed = FALSE;
|
|
|
|
fd = g_mkstemp (temp_path);
|
|
if (fd == -1) {
|
|
failed = TRUE;
|
|
}
|
|
if (!failed && fchmod (fd, METAFILE_PERMISSIONS) == -1) {
|
|
failed = TRUE;
|
|
}
|
|
if (!failed && write_all (fd,
|
|
metafile->write_state->buffer,
|
|
metafile->write_state->size) == -1) {
|
|
failed = TRUE;
|
|
}
|
|
if (fd != -1 && close (fd) == -1) {
|
|
failed = TRUE;
|
|
}
|
|
if (failed && fd != -1) {
|
|
unlink (temp_path);
|
|
}
|
|
if (!failed && rename (temp_path, metafile_path) == -1) {
|
|
failed = TRUE;
|
|
}
|
|
g_free (temp_path);
|
|
|
|
if (failed) {
|
|
metafile_write_failed (metafile);
|
|
} else {
|
|
metafile_write_succeeded (metafile);
|
|
}
|
|
}
|
|
|
|
static void
|
|
metafile_write_start (NautilusMetafile *metafile)
|
|
{
|
|
const char *metafile_uri;
|
|
char *metafile_path;
|
|
|
|
g_assert (NAUTILUS_IS_METAFILE (metafile));
|
|
|
|
metafile->write_state->write_again = FALSE;
|
|
|
|
metafile_uri = metafile->private_uri;
|
|
|
|
metafile_path = g_filename_from_uri (metafile_uri, NULL, NULL);
|
|
g_assert (metafile_path != NULL);
|
|
|
|
metafile_write_local (metafile, metafile_path);
|
|
g_free (metafile_path);
|
|
}
|
|
|
|
static void
|
|
metafile_write (NautilusMetafile *metafile)
|
|
{
|
|
int xml_doc_size;
|
|
|
|
g_assert (NAUTILUS_IS_METAFILE (metafile));
|
|
|
|
g_object_ref (metafile);
|
|
|
|
/* If we are already writing, then just remember to do it again. */
|
|
if (metafile->write_state != NULL) {
|
|
g_object_unref (metafile);
|
|
metafile->write_state->write_again = TRUE;
|
|
return;
|
|
}
|
|
|
|
/* Don't write anything if there's nothing to write.
|
|
* At some point, we might want to change this to actually delete
|
|
* the metafile in this case.
|
|
*/
|
|
if (metafile->xml == NULL) {
|
|
g_object_unref (metafile);
|
|
return;
|
|
}
|
|
|
|
/* Create the write state. */
|
|
metafile->write_state = g_new0 (MetafileWriteState, 1);
|
|
xmlDocDumpMemory (metafile->xml,
|
|
&metafile->write_state->buffer,
|
|
&xml_doc_size);
|
|
metafile->write_state->size = xml_doc_size;
|
|
metafile_write_start (metafile);
|
|
}
|
|
|
|
static gboolean
|
|
metafile_write_idle_callback (gpointer callback_data)
|
|
{
|
|
NautilusMetafile *metafile;
|
|
|
|
metafile = NAUTILUS_METAFILE (callback_data);
|
|
|
|
metafile->write_idle_id = 0;
|
|
metafile_write (metafile);
|
|
|
|
g_object_unref (metafile);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
directory_request_write_metafile (NautilusMetafile *metafile)
|
|
{
|
|
g_assert (NAUTILUS_IS_METAFILE (metafile));
|
|
|
|
if (!allow_metafile (metafile)) {
|
|
return;
|
|
}
|
|
|
|
/* Set up an idle task that will write the metafile. */
|
|
if (metafile->write_idle_id == 0) {
|
|
g_object_ref (metafile);
|
|
metafile->write_idle_id =
|
|
g_idle_add (metafile_write_idle_callback, metafile);
|
|
}
|
|
}
|
|
|
|
static void
|
|
nautilus_metafile_class_init (NautilusMetafileClass *klass)
|
|
{
|
|
G_OBJECT_CLASS (klass)->finalize = finalize;
|
|
|
|
signals[CHANGED] = g_signal_new ("changed",
|
|
NAUTILUS_TYPE_METAFILE,
|
|
G_SIGNAL_RUN_LAST,
|
|
0,
|
|
NULL, NULL,
|
|
g_cclosure_marshal_VOID__POINTER,
|
|
G_TYPE_NONE, 1, G_TYPE_POINTER);
|
|
signals[READY] = g_signal_new ("ready",
|
|
NAUTILUS_TYPE_METAFILE,
|
|
G_SIGNAL_RUN_LAST,
|
|
0,
|
|
NULL, NULL,
|
|
g_cclosure_marshal_VOID__VOID,
|
|
G_TYPE_NONE, 0);
|
|
}
|