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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/*
* GData Client
* Copyright (C) Thibault Saunier 2009 <saunierthibault@gmail.com>
* Copyright (C) Philip Withnall 2010 <philip@tecnocode.co.uk>
* Copyright (C) Red Hat, Inc. 2015
*
* 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/>.
*/
/**
* SECTION:gdata-documents-feed
* @short_description: GData documents feed object
* @stability: Stable
* @include: gdata/services/documents/gdata-documents-feed.h
*
* #GDataDocumentsFeed is a list of entries (#GDataDocumentsEntry subclasses) returned as the result of a query to a #GDataDocumentsService,
* or given as the input to another operation on the online service.
*
* Each #GDataDocumentsEntry represents a single object on the Google Documents online service, such as a text document, presentation document,
* spreadsheet document or a folder, and the #GDataDocumentsFeed represents a collection of those objects.
*
* Since: 0.4.0
**/
#include <config.h>
#include <glib.h>
#include <glib/gi18n-lib.h>
#include <string.h>
#include "gdata-documents-feed.h"
#include "gdata-documents-utils.h"
#include "gdata-types.h"
#include "gdata-private.h"
#include "gdata-service.h"
static gboolean parse_json (GDataParsable *parsable, JsonReader *reader, gpointer user_data, GError **error);
G_DEFINE_TYPE (GDataDocumentsFeed, gdata_documents_feed, GDATA_TYPE_FEED)
static void
gdata_documents_feed_class_init (GDataDocumentsFeedClass *klass)
{
GDataParsableClass *parsable_class = GDATA_PARSABLE_CLASS (klass);
parsable_class->parse_json = parse_json;
}
static void
gdata_documents_feed_init (GDataDocumentsFeed *self)
{
/* Why am I writing it? */
}
static void
get_kind_and_mime_type (JsonReader *reader, gchar **out_kind, gchar **out_mime_type, GError **error)
{
GError *child_error = NULL;
gboolean success;
gchar *kind = NULL;
gchar *mime_type = NULL;
guint i, members;
for (i = 0, members = (guint) json_reader_count_members (reader); i < members; i++) {
json_reader_read_element (reader, i);
if (gdata_parser_string_from_json_member (reader, "kind", P_REQUIRED | P_NON_EMPTY, &kind, &success, &child_error) == TRUE) {
if (!success && child_error != NULL) {
g_propagate_prefixed_error (error, child_error,
/* Translators: the parameter is an error message */
_("Error parsing JSON: %s"),
"Failed to find ‘kind’.");
json_reader_end_element (reader);
goto out;
}
}
if (gdata_parser_string_from_json_member (reader, "mimeType", P_DEFAULT, &mime_type, &success, &child_error) == TRUE) {
if (!success && child_error != NULL) {
g_propagate_prefixed_error (error, child_error,
/* Translators: the parameter is an error message */
_("Error parsing JSON: %s"),
"Failed to find ‘mimeType’.");
json_reader_end_element (reader);
goto out;
}
}
json_reader_end_element (reader);
}
if (out_kind != NULL) {
*out_kind = kind;
kind = NULL;
}
if (out_mime_type != NULL) {
*out_mime_type = mime_type;
mime_type = NULL;
}
out:
g_free (kind);
g_free (mime_type);
}
static gboolean
parse_json (GDataParsable *parsable, JsonReader *reader, gpointer user_data, GError **error)
{
gboolean success = TRUE;
gchar *next_uri = NULL;
/* JSON format: https://developers.google.com/drive/v2/reference/files/list */
if (gdata_parser_string_from_json_member (reader, "nextLink", P_DEFAULT, &next_uri, &success, error) == TRUE) {
if (success && next_uri != NULL && next_uri[0] != '\0') {
GDataLink *_link;
_link = gdata_link_new (next_uri, "http://www.iana.org/assignments/relation/next");
_gdata_feed_add_link (GDATA_FEED (parsable), _link);
g_object_unref (_link);
}
g_free (next_uri);
return success;
} else if (g_strcmp0 (json_reader_get_member_name (reader), "items") == 0) {
guint i, elements;
if (json_reader_is_array (reader) == FALSE) {
g_set_error (error, GDATA_SERVICE_ERROR, GDATA_SERVICE_ERROR_PROTOCOL_ERROR,
/* Translators: the parameter is an error message */
_("Error parsing JSON: %s"),
"JSON node ‘items’ is not an array.");
return FALSE;
}
/* Loop through the elements array. */
for (i = 0, elements = (guint) json_reader_count_elements (reader); success && i < elements; i++) {
GDataEntry *entry = NULL;
GError *child_error = NULL;
GType entry_type = G_TYPE_INVALID;
gchar *kind = NULL;
gchar *mime_type = NULL;
json_reader_read_element (reader, i);
if (json_reader_is_object (reader) == FALSE) {
g_set_error (error, GDATA_SERVICE_ERROR, GDATA_SERVICE_ERROR_PROTOCOL_ERROR,
/* Translators: the parameter is an error message */
_("Error parsing JSON: %s"),
"JSON node inside ‘items’ is not an object");
success = FALSE;
goto continuation;
}
get_kind_and_mime_type (reader, &kind, &mime_type, &child_error);
if (child_error != NULL) {
g_propagate_error (error, child_error);
success = FALSE;
goto continuation;
}
if (g_strcmp0 (kind, "drive#file") == 0) {
entry_type = gdata_documents_utils_get_type_from_content_type (mime_type);
} else {
g_warning ("%s files are not handled yet", kind);
}
if (entry_type == G_TYPE_INVALID)
goto continuation;
entry = GDATA_ENTRY (_gdata_parsable_new_from_json_node (entry_type, reader, NULL, error));
/* Call the progress callback in the main thread */
_gdata_feed_call_progress_callback (GDATA_FEED (parsable), user_data, entry);
_gdata_feed_add_entry (GDATA_FEED (parsable), entry);
continuation:
g_clear_object (&entry);
g_free (kind);
g_free (mime_type);
json_reader_end_element (reader);
}
return success;
}
return GDATA_PARSABLE_CLASS (gdata_documents_feed_parent_class)->parse_json (parsable, reader, user_data, error);
}
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