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/*
* Copyright (C) 2008, 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 <gio/gio.h>
#include <libtracker-extract/tracker-extract.h>
#include "tracker-main.h"
#include "tracker-read.h"
#define TRY_LOCALE_TO_UTF8_CONVERSION 0
static gchar *
get_file_content (const gchar *uri,
gsize n_bytes)
{
GFile *file;
GFileInputStream *stream;
GError *error = NULL;
gchar *text;
/* If no content requested, return */
if (n_bytes == 0) {
return NULL;
}
/* Get filename from URI */
file = g_file_new_for_uri (uri);
stream = g_file_read (file, NULL, &error);
if (error) {
g_message ("Could not read file '%s': %s",
uri,
error->message);
g_error_free (error);
g_object_unref (file);
return NULL;
}
g_debug (" Starting to read '%s' up to %" G_GSIZE_FORMAT " bytes...",
uri, n_bytes);
/* Read up to n_bytes from stream. Output is always, always valid UTF-8 */
text = tracker_read_text_from_stream (G_INPUT_STREAM (stream),
n_bytes,
TRY_LOCALE_TO_UTF8_CONVERSION);
g_object_unref (stream);
g_object_unref (file);
return text;
}
G_MODULE_EXPORT gboolean
tracker_extract_get_metadata (const gchar *uri,
const gchar *mimetype,
TrackerSparqlBuilder *preupdate,
TrackerSparqlBuilder *metadata)
{
TrackerConfig *config;
gchar *content;
config = tracker_main_get_config ();
content = get_file_content (uri,
tracker_config_get_max_bytes (config));
tracker_sparql_builder_predicate (metadata, "a");
tracker_sparql_builder_object (metadata, "nfo:PlainTextDocument");
if (content) {
tracker_sparql_builder_predicate (metadata, "nie:plainTextContent");
tracker_sparql_builder_object_unvalidated (metadata, content);
g_free (content);
}
return TRUE;
}
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