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/*
* Copyright (C) 2005 Red Hat, Inc
*
* 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 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., 59 Temple Place - Suite 330,
*
* Author: Alexander Larsson <alexl@redhat.com>
*
* Based on nautilus-search-engine-simple.c
*/
#include "config.h"
/* these must be defined even when HAVE_GNU_FTW is not defined
* because (really) old versions of GNU libc have ftw.h but do
* export ftw() and friends only if _XOPEN_SOURCE and _GNU_SOURCE
* are defined. see bug #444097.
*/
#define _XOPEN_SOURCE 500
#define _GNU_SOURCE
#ifdef HAVE_FTW_H
#include <ftw.h>
#endif
#include "gtksearchenginesimple.h"
#include "gtkprivate.h"
#include <string.h>
#define BATCH_SIZE 500
typedef struct
{
GtkSearchEngineSimple *engine;
gchar *path;
gchar **words;
GList *found_list;
gint n_processed_files;
GList *uri_hits;
/* accessed on both threads: */
volatile gboolean cancelled;
} SearchThreadData;
struct _GtkSearchEngineSimplePrivate
{
GtkQuery *query;
SearchThreadData *active_search;
gboolean query_finished;
};
G_DEFINE_TYPE (GtkSearchEngineSimple, _gtk_search_engine_simple, GTK_TYPE_SEARCH_ENGINE);
static void
gtk_search_engine_simple_dispose (GObject *object)
{
GtkSearchEngineSimple *simple;
GtkSearchEngineSimplePrivate *priv;
simple = GTK_SEARCH_ENGINE_SIMPLE (object);
priv = simple->priv;
if (priv->query)
{
g_object_unref (priv->query);
priv->query = NULL;
}
if (priv->active_search)
{
priv->active_search->cancelled = TRUE;
priv->active_search = NULL;
}
G_OBJECT_CLASS (_gtk_search_engine_simple_parent_class)->dispose (object);
}
static SearchThreadData *
search_thread_data_new (GtkSearchEngineSimple *engine,
GtkQuery *query)
{
SearchThreadData *data;
char *text, *lower, *uri;
data = g_new0 (SearchThreadData, 1);
data->engine = g_object_ref (engine);
uri = _gtk_query_get_location (query);
if (uri != NULL)
{
data->path = g_filename_from_uri (uri, NULL, NULL);
g_free (uri);
}
if (data->path == NULL)
data->path = g_strdup (g_get_home_dir ());
text = _gtk_query_get_text (query);
lower = g_ascii_strdown (text, -1);
data->words = g_strsplit (lower, " ", -1);
g_free (text);
g_free (lower);
return data;
}
static void
search_thread_data_free (SearchThreadData *data)
{
g_object_unref (data->engine);
g_free (data->path);
g_strfreev (data->words);
g_free (data);
}
static gboolean
search_thread_done_idle (gpointer user_data)
{
SearchThreadData *data;
data = user_data;
if (!data->cancelled)
_gtk_search_engine_finished (GTK_SEARCH_ENGINE (data->engine));
data->engine->priv->active_search = NULL;
search_thread_data_free (data);
return FALSE;
}
typedef struct
{
GList *uris;
SearchThreadData *thread_data;
} SearchHits;
static gboolean
search_thread_add_hits_idle (gpointer user_data)
{
SearchHits *hits;
hits = user_data;
if (!hits->thread_data->cancelled)
{
_gtk_search_engine_hits_added (GTK_SEARCH_ENGINE (hits->thread_data->engine),
hits->uris);
}
g_list_foreach (hits->uris, (GFunc)g_free, NULL);
g_list_free (hits->uris);
g_free (hits);
return FALSE;
}
static void
send_batch (SearchThreadData *data)
{
SearchHits *hits;
data->n_processed_files = 0;
if (data->uri_hits)
{
hits = g_new (SearchHits, 1);
hits->uris = data->uri_hits;
hits->thread_data = data;
gdk_threads_add_idle (search_thread_add_hits_idle, hits);
}
data->uri_hits = NULL;
}
static GStaticPrivate search_thread_data = G_STATIC_PRIVATE_INIT;
#ifdef HAVE_FTW_H
static int
search_visit_func (const char *fpath,
const struct stat *sb,
int typeflag,
struct FTW *ftwbuf)
{
SearchThreadData *data;
gint i;
const gchar *name;
gchar *lower_name;
gchar *uri;
gboolean hit;
gboolean is_hidden;
data = (SearchThreadData*)g_static_private_get (&search_thread_data);
if (data->cancelled)
#ifdef HAVE_GNU_FTW
return FTW_STOP;
#else
return 1;
#endif /* HAVE_GNU_FTW */
name = strrchr (fpath, '/');
if (name)
name++;
else
name = fpath;
is_hidden = *name == '.';
hit = FALSE;
if (!is_hidden)
{
lower_name = g_ascii_strdown (name, -1);
hit = TRUE;
for (i = 0; data->words[i] != NULL; i++)
{
if (strstr (lower_name, data->words[i]) == NULL)
{
hit = FALSE;
break;
}
}
g_free (lower_name);
}
if (hit)
{
uri = g_filename_to_uri (fpath, NULL, NULL);
data->uri_hits = g_list_prepend (data->uri_hits, uri);
}
data->n_processed_files++;
if (data->n_processed_files > BATCH_SIZE)
send_batch (data);
#ifdef HAVE_GNU_FTW
if (is_hidden)
return FTW_SKIP_SUBTREE;
else
return FTW_CONTINUE;
#else
return 0;
#endif /* HAVE_GNU_FTW */
}
#endif /* HAVE_FTW_H */
static gpointer
search_thread_func (gpointer user_data)
{
#ifdef HAVE_FTW_H
SearchThreadData *data;
data = user_data;
g_static_private_set (&search_thread_data, data, NULL);
nftw (data->path, search_visit_func, 20,
#ifdef HAVE_GNU_FTW
FTW_ACTIONRETVAL |
#endif
FTW_PHYS);
send_batch (data);
gdk_threads_add_idle (search_thread_done_idle, data);
#endif /* HAVE_FTW_H */
return NULL;
}
static void
gtk_search_engine_simple_start (GtkSearchEngine *engine)
{
GtkSearchEngineSimple *simple;
SearchThreadData *data;
simple = GTK_SEARCH_ENGINE_SIMPLE (engine);
if (simple->priv->active_search != NULL)
return;
if (simple->priv->query == NULL)
return;
data = search_thread_data_new (simple, simple->priv->query);
g_thread_create (search_thread_func, data, FALSE, NULL);
simple->priv->active_search = data;
}
static void
gtk_search_engine_simple_stop (GtkSearchEngine *engine)
{
GtkSearchEngineSimple *simple;
simple = GTK_SEARCH_ENGINE_SIMPLE (engine);
if (simple->priv->active_search != NULL)
{
simple->priv->active_search->cancelled = TRUE;
simple->priv->active_search = NULL;
}
}
static gboolean
gtk_search_engine_simple_is_indexed (GtkSearchEngine *engine)
{
return FALSE;
}
static void
gtk_search_engine_simple_set_query (GtkSearchEngine *engine,
GtkQuery *query)
{
GtkSearchEngineSimple *simple;
simple = GTK_SEARCH_ENGINE_SIMPLE (engine);
if (query)
g_object_ref (query);
if (simple->priv->query)
g_object_unref (simple->priv->query);
simple->priv->query = query;
}
static void
_gtk_search_engine_simple_class_init (GtkSearchEngineSimpleClass *class)
{
GObjectClass *gobject_class;
GtkSearchEngineClass *engine_class;
gobject_class = G_OBJECT_CLASS (class);
gobject_class->dispose = gtk_search_engine_simple_dispose;
engine_class = GTK_SEARCH_ENGINE_CLASS (class);
engine_class->set_query = gtk_search_engine_simple_set_query;
engine_class->start = gtk_search_engine_simple_start;
engine_class->stop = gtk_search_engine_simple_stop;
engine_class->is_indexed = gtk_search_engine_simple_is_indexed;
g_type_class_add_private (gobject_class, sizeof (GtkSearchEngineSimplePrivate));
}
static void
_gtk_search_engine_simple_init (GtkSearchEngineSimple *engine)
{
engine->priv = G_TYPE_INSTANCE_GET_PRIVATE (engine, GTK_TYPE_SEARCH_ENGINE_SIMPLE, GtkSearchEngineSimplePrivate);
}
GtkSearchEngine *
_gtk_search_engine_simple_new (void)
{
#ifdef HAVE_FTW_H
return g_object_new (GTK_TYPE_SEARCH_ENGINE_SIMPLE, NULL);
#else
return NULL;
#endif
}
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