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/*
* Copyright (C) 2012 Intel Corporation.
*
* Authors: Regis Merlino <regis.merlino@intel.com>
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
*/
/**
* SECTION:gupnp-feature-list-parser
* @short_description: FeatureList state variable XML parser
*
* #GUPnPFeatureListParser parses XML strings from ContentDirectory
* FeatureList state variable.
*
*/
#include <config.h>
#include <string.h>
#include "gupnp-feature-list-parser.h"
#include "gupnp-av.h"
#include "xml-util.h"
struct _GUPnPFeatureListParser {
GObject parent;
};
/* GUPnPFeatureListParser */
G_DEFINE_TYPE (GUPnPFeatureListParser,
gupnp_feature_list_parser,
G_TYPE_OBJECT)
static void
gupnp_feature_list_parser_init (G_GNUC_UNUSED GUPnPFeatureListParser *parser)
{
/* Nothing to do here */
}
static void
gupnp_feature_list_parser_finalize (GObject *object)
{
GObjectClass *object_class;
object_class = G_OBJECT_CLASS (gupnp_feature_list_parser_parent_class);
object_class->finalize (object);
}
static void
gupnp_feature_list_parser_class_init (GUPnPFeatureListParserClass *klass)
{
GObjectClass *object_class;
object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gupnp_feature_list_parser_finalize;
}
/**
* gupnp_feature_list_parser_new:
*
* Return value: A new #GUPnPFeatureListParser object.
**/
GUPnPFeatureListParser *
gupnp_feature_list_parser_new (void)
{
return g_object_new (GUPNP_TYPE_FEATURE_LIST_PARSER, NULL);
}
static char *
get_feature_object_ids (xmlNode *feature)
{
xmlNode *element;
const char *content;
GString *object_ids = g_string_new ("");
for (element = feature->children; element; element = element->next) {
const char *name = (const char *) element->name;
if (g_ascii_strcasecmp (name, "objectIDs") == 0) {
content = (const char *) xmlNodeGetContent (element);
if (strlen (content) == 0)
continue;
if (object_ids->len > 0)
g_string_append_c (object_ids, ',');
g_string_append (object_ids, content);
}
}
return g_string_free (object_ids, FALSE);
}
/**
* gupnp_feature_list_parser_parse_text:
* @parser: A #GUPnPFeatureListParser
* @text: The feature list string to be parsed
* @error: The location where to store the error information if any, or NULL
*
* Parses @text and returns the list of available features.
* If an error occured @error will be set.
*
* Return value: (transfer full) (element-type GUPnPFeature)(nullable): The list of
* features or %NULL if an error occured.
**/
GList *
gupnp_feature_list_parser_parse_text
(G_GNUC_UNUSED GUPnPFeatureListParser *parser,
const char *text,
GError **error)
{
xmlDoc *doc;
xmlNode *element;
GList *feature_list = NULL;
doc = xmlRecoverMemory (text, strlen (text));
if (doc == NULL) {
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
"Could not parse FeatureList XML:\n%s", text);
return NULL;
}
/* Get a pointer to root element */
element = av_xml_util_get_element ((xmlNode *) doc, "Features", NULL);
if (element == NULL) {
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_PARSE,
"No 'Features' node in the XML:\n%s",
text);
xmlFreeDoc (doc);
return NULL;
}
for (element = element->children; element; element = element->next) {
GUPnPFeature *feature;
const char *name;
const char *version;
char *object_ids;
if (g_ascii_strcasecmp ((char *) element->name,
"Feature") == 0) {
name = av_xml_util_get_attribute_content (element,
"name");
version = av_xml_util_get_attribute_content (element,
"version");
if (!name || !version) {
g_set_error (error,
G_MARKUP_ERROR,
G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE,
"Invalid attributes in 'Feature' "
"node in the XML:\n%s",
text);
xmlFreeDoc (doc);
if (feature_list)
g_list_free_full (feature_list,
g_object_unref);
return NULL;
}
object_ids = get_feature_object_ids (element);
feature = g_object_new (GUPNP_TYPE_FEATURE,
"name", name,
"version", version,
"object-ids", object_ids,
NULL);
feature_list = g_list_append (feature_list, feature);
g_free (object_ids);
}
}
xmlFreeDoc (doc);
return feature_list;
}
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