moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 464 insertions, 0 deletions

diff --git a/libcaja-private/caja-search-engine-simple.c b/libcaja-private/caja-search-engine-simple.c
new file mode 100644
index 00000000..62bffd5e
--- /dev/null
+++ b/libcaja-private/caja-search-engine-simple.c
@@ -0,0 +1,464 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+/*
+ * Copyright (C) 2005 Red Hat, Inc
+ *
+ * Caja 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.
+ *
+ * Caja 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,
+ * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Alexander Larsson <[email protected]>
+ *
+ */
+
+#include <config.h>
+#include "caja-search-engine-simple.h"
+
+#include <string.h>
+#include <glib.h>
+
+#include <eel/eel-gtk-macros.h>
+#include <eel/eel-glib-extensions.h>
+#include <gio/gio.h>
+
+#define BATCH_SIZE 500
+
+typedef struct
+{
+    CajaSearchEngineSimple *engine;
+    GCancellable *cancellable;
+
+    GList *mime_types;
+    char **words;
+    GList *found_list;
+
+    GQueue *directories; /* GFiles */
+
+    GHashTable *visited;
+
+    gint n_processed_files;
+    GList *uri_hits;
+} SearchThreadData;
+
+
+struct CajaSearchEngineSimpleDetails
+{
+    CajaQuery *query;
+
+    SearchThreadData *active_search;
+
+    gboolean query_finished;
+};
+
+
+static void  caja_search_engine_simple_class_init       (CajaSearchEngineSimpleClass *class);
+static void  caja_search_engine_simple_init             (CajaSearchEngineSimple      *engine);
+
+G_DEFINE_TYPE (CajaSearchEngineSimple,
+               caja_search_engine_simple,
+               CAJA_TYPE_SEARCH_ENGINE);
+
+static CajaSearchEngineClass *parent_class = NULL;
+
+static void
+finalize (GObject *object)
+{
+    CajaSearchEngineSimple *simple;
+
+    simple = CAJA_SEARCH_ENGINE_SIMPLE (object);
+
+    if (simple->details->query)
+    {
+        g_object_unref (simple->details->query);
+        simple->details->query = NULL;
+    }
+
+    g_free (simple->details);
+
+    EEL_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
+}
+
+static SearchThreadData *
+search_thread_data_new (CajaSearchEngineSimple *engine,
+                        CajaQuery *query)
+{
+    SearchThreadData *data;
+    char *text, *lower, *normalized, *uri;
+    GFile *location;
+
+    data = g_new0 (SearchThreadData, 1);
+
+    data->engine = engine;
+    data->directories = g_queue_new ();
+    data->visited = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
+    uri = caja_query_get_location (query);
+    location = NULL;
+    if (uri != NULL)
+    {
+        location = g_file_new_for_uri (uri);
+        g_free (uri);
+    }
+    if (location == NULL)
+    {
+        location = g_file_new_for_path ("/");
+    }
+    g_queue_push_tail (data->directories, location);
+
+    text = caja_query_get_text (query);
+    normalized = g_utf8_normalize (text, -1, G_NORMALIZE_NFD);
+    lower = g_utf8_strdown (normalized, -1);
+    data->words = g_strsplit (lower, " ", -1);
+    g_free (text);
+    g_free (lower);
+    g_free (normalized);
+
+    data->mime_types = caja_query_get_mime_types (query);
+
+    data->cancellable = g_cancellable_new ();
+
+    return data;
+}
+
+static void
+search_thread_data_free (SearchThreadData *data)
+{
+    g_queue_foreach (data->directories,
+                     (GFunc)g_object_unref, NULL);
+    g_queue_free (data->directories);
+    g_hash_table_destroy (data->visited);
+    g_object_unref (data->cancellable);
+    g_strfreev (data->words);
+    eel_g_list_free_deep (data->mime_types);
+    eel_g_list_free_deep (data->uri_hits);
+    g_free (data);
+}
+
+static gboolean
+search_thread_done_idle (gpointer user_data)
+{
+    SearchThreadData *data;
+
+    data = user_data;
+
+    if (!g_cancellable_is_cancelled (data->cancellable))
+    {
+        caja_search_engine_finished (CAJA_SEARCH_ENGINE (data->engine));
+        data->engine->details->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 (!g_cancellable_is_cancelled (hits->thread_data->cancellable))
+    {
+        caja_search_engine_hits_added (CAJA_SEARCH_ENGINE (hits->thread_data->engine),
+                                       hits->uris);
+    }
+
+    eel_g_list_free_deep (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;
+        g_idle_add (search_thread_add_hits_idle, hits);
+    }
+    data->uri_hits = NULL;
+}
+
+#define STD_ATTRIBUTES \
+	G_FILE_ATTRIBUTE_STANDARD_NAME "," \
+	G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME "," \
+	G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN "," \
+	G_FILE_ATTRIBUTE_STANDARD_TYPE "," \
+	G_FILE_ATTRIBUTE_ID_FILE
+
+static void
+visit_directory (GFile *dir, SearchThreadData *data)
+{
+    GFileEnumerator *enumerator;
+    GFileInfo *info;
+    GFile *child;
+    const char *mime_type, *display_name;
+    char *lower_name, *normalized;
+    gboolean hit;
+    int i;
+    GList *l;
+    const char *id;
+    gboolean visited;
+
+    enumerator = g_file_enumerate_children (dir,
+                                            data->mime_types != NULL ?
+                                            STD_ATTRIBUTES ","
+                                            G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE
+                                            :
+                                            STD_ATTRIBUTES
+                                            ,
+                                            0, data->cancellable, NULL);
+
+    if (enumerator == NULL)
+    {
+        return;
+    }
+
+    while ((info = g_file_enumerator_next_file (enumerator, data->cancellable, NULL)) != NULL)
+    {
+        if (g_file_info_get_is_hidden (info))
+        {
+            goto next;
+        }
+
+        display_name = g_file_info_get_display_name (info);
+        if (display_name == NULL)
+        {
+            goto next;
+        }
+
+        normalized = g_utf8_normalize (display_name, -1, G_NORMALIZE_NFD);
+        lower_name = g_utf8_strdown (normalized, -1);
+        g_free (normalized);
+
+        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 && data->mime_types)
+        {
+            mime_type = g_file_info_get_content_type (info);
+            hit = FALSE;
+
+            for (l = data->mime_types; mime_type != NULL && l != NULL; l = l->next)
+            {
+                if (g_content_type_equals (mime_type, l->data))
+                {
+                    hit = TRUE;
+                    break;
+                }
+            }
+        }
+
+        child = g_file_get_child (dir, g_file_info_get_name (info));
+
+        if (hit)
+        {
+            data->uri_hits = g_list_prepend (data->uri_hits, g_file_get_uri (child));
+        }
+
+        data->n_processed_files++;
+        if (data->n_processed_files > BATCH_SIZE)
+        {
+            send_batch (data);
+        }
+
+        if (g_file_info_get_file_type (info) == G_FILE_TYPE_DIRECTORY)
+        {
+            id = g_file_info_get_attribute_string (info, G_FILE_ATTRIBUTE_ID_FILE);
+            visited = FALSE;
+            if (id)
+            {
+                if (g_hash_table_lookup_extended (data->visited,
+                                                  id, NULL, NULL))
+                {
+                    visited = TRUE;
+                }
+                else
+                {
+                    g_hash_table_insert (data->visited, g_strdup (id), NULL);
+                }
+            }
+
+            if (!visited)
+            {
+                g_queue_push_tail (data->directories, g_object_ref (child));
+            }
+        }
+
+        g_object_unref (child);
+next:
+        g_object_unref (info);
+    }
+
+    g_object_unref (enumerator);
+}
+
+
+static gpointer
+search_thread_func (gpointer user_data)
+{
+    SearchThreadData *data;
+    GFile *dir;
+    GFileInfo *info;
+    const char *id;
+
+    data = user_data;
+
+    /* Insert id for toplevel directory into visited */
+    dir = g_queue_peek_head (data->directories);
+    info = g_file_query_info (dir, G_FILE_ATTRIBUTE_ID_FILE, 0, data->cancellable, NULL);
+    if (info)
+    {
+        id = g_file_info_get_attribute_string (info, G_FILE_ATTRIBUTE_ID_FILE);
+        if (id)
+        {
+            g_hash_table_insert (data->visited, g_strdup (id), NULL);
+        }
+        g_object_unref (info);
+    }
+
+    while (!g_cancellable_is_cancelled (data->cancellable) &&
+            (dir = g_queue_pop_head (data->directories)) != NULL)
+    {
+        visit_directory (dir, data);
+        g_object_unref (dir);
+    }
+    send_batch (data);
+
+    g_idle_add (search_thread_done_idle, data);
+
+    return NULL;
+}
+
+static void
+caja_search_engine_simple_start (CajaSearchEngine *engine)
+{
+    CajaSearchEngineSimple *simple;
+    SearchThreadData *data;
+
+    simple = CAJA_SEARCH_ENGINE_SIMPLE (engine);
+
+    if (simple->details->active_search != NULL)
+    {
+        return;
+    }
+
+    if (simple->details->query == NULL)
+    {
+        return;
+    }
+
+    data = search_thread_data_new (simple, simple->details->query);
+
+    g_thread_create (search_thread_func, data, FALSE, NULL);
+
+    simple->details->active_search = data;
+}
+
+static void
+caja_search_engine_simple_stop (CajaSearchEngine *engine)
+{
+    CajaSearchEngineSimple *simple;
+
+    simple = CAJA_SEARCH_ENGINE_SIMPLE (engine);
+
+    if (simple->details->active_search != NULL)
+    {
+        g_cancellable_cancel (simple->details->active_search->cancellable);
+        simple->details->active_search = NULL;
+    }
+}
+
+static gboolean
+caja_search_engine_simple_is_indexed (CajaSearchEngine *engine)
+{
+    return FALSE;
+}
+
+static void
+caja_search_engine_simple_set_query (CajaSearchEngine *engine, CajaQuery *query)
+{
+    CajaSearchEngineSimple *simple;
+
+    simple = CAJA_SEARCH_ENGINE_SIMPLE (engine);
+
+    if (query)
+    {
+        g_object_ref (query);
+    }
+
+    if (simple->details->query)
+    {
+        g_object_unref (simple->details->query);
+    }
+
+    simple->details->query = query;
+}
+
+static void
+caja_search_engine_simple_class_init (CajaSearchEngineSimpleClass *class)
+{
+    GObjectClass *gobject_class;
+    CajaSearchEngineClass *engine_class;
+
+    parent_class = g_type_class_peek_parent (class);
+
+    gobject_class = G_OBJECT_CLASS (class);
+    gobject_class->finalize = finalize;
+
+    engine_class = CAJA_SEARCH_ENGINE_CLASS (class);
+    engine_class->set_query = caja_search_engine_simple_set_query;
+    engine_class->start = caja_search_engine_simple_start;
+    engine_class->stop = caja_search_engine_simple_stop;
+    engine_class->is_indexed = caja_search_engine_simple_is_indexed;
+}
+
+static void
+caja_search_engine_simple_init (CajaSearchEngineSimple *engine)
+{
+    engine->details = g_new0 (CajaSearchEngineSimpleDetails, 1);
+}
+
+
+CajaSearchEngine *
+caja_search_engine_simple_new (void)
+{
+    CajaSearchEngine *engine;
+
+    engine = g_object_new (CAJA_TYPE_SEARCH_ENGINE_SIMPLE, NULL);
+
+    return engine;
+}