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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/*
* GData Client
* Copyright (C) 2014 Carlos Garnacho <carlosg@gnome.org>
*
* GData Client 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.
*
* GData Client 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 GData Client. If not, see <http://www.gnu.org/licenses/>.
*/
#include <gdata/gdata.h>
#include <locale.h>
#include <string.h>
#define MAX_RESULTS 10
static int
print_usage (char *argv[])
{
g_printerr ("usage -- %s [search <term>|topic <ID> [<filter>]|query <mql>]\n\n"
"query examples (more info at https://developers.google.com/freebase/v1/mql-overview):\n"
" '{\"id\":\"/en/linux\",\"/computer/software/license\":[]}'\n"
" '[{\"name\":null,\"/geography/river/length\":null,\"type\":\"/geography/river\",\"/location/location/containedby\":{\"id\":\"/en/england\"}}]'\n"
" '[{\"type\":\"/location/citytown\",\"name\":null,\"/location/location/time_zones\":{\"id\":\"/en/central_european_time\"},\"limit\":200}]'\n"
"topic examples:\n"
" '/en/gnome'\n"
" '/m/0fpzzp'\n"
" '/computer/software'\n"
"search examples:\n"
" 'gnome'\n"
" 'linux'\n"
" 'operating system'\n",
argv[0]);
return -1;
}
int
main (int argc, char *argv[])
{
GDataFreebaseService *service;
GError *error = NULL;
gint retval = 0;
if (argc < 3)
return print_usage (argv);
setlocale (LC_ALL, "");
service = gdata_freebase_service_new (NULL, NULL);
if (strcmp (argv[1], "query") == 0) {
GDataFreebaseResult *result;
GDataFreebaseQuery *query;
query = gdata_freebase_query_new (argv[2]);
result = gdata_freebase_service_query (service, query, NULL, &error);
if (error) {
g_critical ("Error querying Freebase: %s", error->message);
g_error_free (error);
} else {
GVariant *variant;
gchar *str;
variant = gdata_freebase_result_dup_variant (result);
g_object_unref (result);
str = g_variant_print (variant, FALSE);
g_print ("%s\n", str);
g_variant_unref (variant);
g_free (str);
}
g_object_unref (query);
} else if (strcmp (argv[1], "search") == 0) {
GDataFreebaseSearchResult *result;
GDataFreebaseSearchQuery *query;
query = gdata_freebase_search_query_new (argv[2]);
result = gdata_freebase_service_search (service, query, NULL, &error);
if (error) {
g_critical ("Error querying Freebase: %s", error->message);
g_error_free (error);
} else {
const GDataFreebaseSearchResultItem *item;
guint count, i;
count = gdata_freebase_search_result_get_num_items (result);
g_print ("Showing %d of %d items:\n", count,
gdata_freebase_search_result_get_total_hits (result));
for (i = 0; i < count; i++) {
item = gdata_freebase_search_result_get_item (result, i);
g_print ("%2d: %s (%s), score: %f\n", i,
gdata_freebase_search_result_item_get_name (item),
gdata_freebase_search_result_item_get_id (item),
gdata_freebase_search_result_item_get_score (item));
if (gdata_freebase_search_result_item_get_notable_id (item)) {
g_print (" pertains to domain: %s(%s)",
gdata_freebase_search_result_item_get_notable_name (item),
gdata_freebase_search_result_item_get_notable_id (item));
}
g_print ("\n");
}
g_object_unref (result);
}
g_object_unref (query);
} else if (strcmp (argv[1], "topic") == 0) {
GDataFreebaseTopicResult *result;
GDataFreebaseTopicQuery *query;
query = gdata_freebase_topic_query_new (argv[2]);
if (argc > 3) {
const gchar *filter[] = { argv[3], NULL };
gdata_freebase_topic_query_set_filter (query, filter);
}
result = gdata_freebase_service_get_topic (service, query, NULL, &error);
if (error) {
g_critical ("Error querying Freebase: %s", error->message);
g_error_free (error);
} else {
GDataFreebaseTopicObject *object;
GPtrArray *properties;
guint i;
object = gdata_freebase_topic_result_dup_object (result);
g_object_unref (result);
properties = gdata_freebase_topic_object_list_properties (object);
for (i = 0; i < properties->len; i++) {
const gchar *property;
gint64 hits, count, j;
property = g_ptr_array_index (properties, i);
count = gdata_freebase_topic_object_get_property_count (object, property);
hits = gdata_freebase_topic_object_get_property_hits (object, property);
if (count == hits)
g_print ("%s: (%" G_GINT64_FORMAT " values)\n", property, hits);
else
g_print ("%s: (%" G_GINT64_FORMAT " of %" G_GINT64_FORMAT " values)\n", property, count, hits);
for (j = 0; j < count; j++) {
GDataFreebaseTopicValue *value;
GType gtype;
value = gdata_freebase_topic_object_get_property_value (object, property, j);
g_print (" %s", gdata_freebase_topic_value_get_text (value));
if (gdata_freebase_topic_value_is_image (value)) {
GInputStream *stream;
stream = gdata_freebase_service_get_image (service, value, NULL, 0, 0, NULL);
g_print (" (URI: '%s')",
gdata_download_stream_get_download_uri (GDATA_DOWNLOAD_STREAM (stream)));
g_object_unref (stream);
}
gtype = gdata_freebase_topic_value_get_value_type (value);
if (gtype == GDATA_TYPE_FREEBASE_TOPIC_OBJECT) {
const GDataFreebaseTopicObject *value_object;
value_object = gdata_freebase_topic_value_get_object (value);
g_print (" (ID: '%s')", gdata_freebase_topic_object_get_id (value_object));
}
g_print ("\n");
}
}
gdata_freebase_topic_object_unref (object);
g_ptr_array_unref (properties);
}
g_object_unref (query);
} else {
retval = print_usage (argv);
}
g_object_unref (service);
return retval;
}
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