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/*
* Copyright (C) 2009, Nokia <ivan.frade@nokia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <string.h>
#include <glib.h>
#include <libtracker-common/tracker-file-utils.h>
#include <libtracker-common/tracker-date-time.h>
#include "tracker-guarantee.h"
#ifdef GUARANTEE_METADATA
static gchar *
get_title_from_file (const gchar *uri)
{
gchar *filename;
gchar *basename;
gchar *p;
filename = g_filename_from_uri (uri, NULL, NULL);
basename = g_filename_display_basename (filename);
g_free (filename);
p = strrchr (basename, '.');
if (p) {
if (p == basename) {
p = g_strdup (&basename[1]);
g_free (basename);
basename = p;
} else {
*p = '\0';
}
}
return g_strdelimit (basename, "_", ' ');
}
static gchar *
get_date_from_file_mtime (const gchar *uri)
{
gchar *date;
guint64 mtime;
mtime = tracker_file_get_mtime_uri (uri);
date = tracker_date_to_string ((time_t) mtime);
return date;
}
#endif /* GUARANTEE_METADATA */
/**
* tracker_guarantee_resource_title_from_file:
* @resource: the relevant #TrackerResource
* @key: the property URI to set
* @current_value: the current data to check before looking at @uri.
* @uri: a string representing a URI to use
* @p_new_value: pointer to a string which receives the new title, or
* %NULL
*
* Checks @current_value to make sure it is usable (i.e. not %NULL or an
* empty string). If it is not usable, then @uri is parsed to guarantee a
* metadata value for @key.
*
* Parses the file pointed to by @uri and uses the basename
* (before the "." and extension of the file) as the title. If the
* title has any "_" characters, they are also converted into spaces.
*
* This function only operates if Tracker was compiled with
* --enable-guarantee-metadata enabled at configure-time.
*
* Returns: %TRUE on success and content was added to @metadata, otherwise %FALSE.
*
* Since: 1.10
**/
gboolean
tracker_guarantee_resource_title_from_file (TrackerResource *resource,
const gchar *key,
const gchar *current_value,
const gchar *uri,
gchar **p_new_value)
{
gboolean success = TRUE;
#ifdef GUARANTEE_METADATA
g_return_val_if_fail (resource != NULL, FALSE);
g_return_val_if_fail (key != NULL, FALSE);
g_return_val_if_fail (uri != NULL, FALSE);
if (current_value && *current_value != '\0') {
tracker_resource_set_string (resource, key, current_value);
if (p_new_value != NULL) {
*p_new_value = g_strdup (current_value);
}
} else {
gchar *value;
value = get_title_from_file (uri);
if (value && value[0] != '\0') {
tracker_resource_set_string (resource, key, value);
} else {
success = FALSE;
}
if (p_new_value != NULL) {
*p_new_value = value;
} else {
g_free (value);
}
}
#else /* GUARANTEE_METADATA */
if (current_value && *current_value != '\0') {
tracker_resource_set_string (resource, key, current_value);
if (p_new_value != NULL) {
*p_new_value = g_strdup (current_value);
}
} else {
success = FALSE;
}
#endif /* GUARANTEE_METADATA */
return success;
}
/**
* tracker_guarantee_resource_date_from_file_mtime:
* @resource: the relevant #TrackerResource
* @key: the property URI to set
* @current_value: the current data to check before looking at @uri
* @uri: a string representing a URI to use
*
* Checks @current_value to make sure it is sane (i.e. not %NULL or an
* empty string). If it is, then @uri is parsed to guarantee a
* metadata value for @key.
*
* When parsing @uri, stat() is called on the file to create a
* date based on the file's mtime.
*
* This function only operates if Tracker was compiled with
* --enable-guarantee-metadata enabled at configure-time.
*
* Returns: %TRUE on success and content was added to @metadata, otherwise %FALSE.
*
* Since: 1.10
**/
gboolean
tracker_guarantee_resource_date_from_file_mtime (TrackerResource *resource,
const gchar *key,
const gchar *current_value,
const gchar *uri)
{
gboolean success = TRUE;
#ifdef GUARANTEE_METADATA
g_return_val_if_fail (resource != NULL, FALSE);
g_return_val_if_fail (key != NULL, FALSE);
g_return_val_if_fail (uri != NULL, FALSE);
if (current_value && *current_value != '\0') {
tracker_resource_set_string (resource, key, current_value);
} else {
gchar *value;
value = get_date_from_file_mtime (uri);
if (value && *value != '\0') {
tracker_resource_set_string (resource, key, value);
} else {
success = FALSE;
}
g_free (value);
}
#else /* GUARANTEE_METADATA */
if (current_value && *current_value != '\0') {
tracker_resource_set_string (resource, key, current_value);
} else {
success = FALSE;
}
#endif /* GUARANTEE_METADATA */
return success;
}
gboolean
tracker_guarantee_resource_utf8_string (TrackerResource *resource,
const gchar *key,
const gchar *value)
{
const gchar *end;
gchar *str;
if (!g_utf8_validate (value, -1, &end)) {
if (end == value)
return FALSE;
str = g_strndup (value, end - value);
tracker_resource_set_string (resource, key, str);
g_free (str);
} else {
tracker_resource_set_string (resource, key, value);
}
return TRUE;
}
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