/*
* call-seq:
* attribute(name)
*
* Get the value of attribute named +name+
*/
static VALUE reader_attribute(VALUE self, VALUE name)
{
xmlTextReaderPtr reader;
xmlChar *value ;
Data_Get_Struct(self, xmlTextReader, reader);
if(name == Qnil) return Qnil;
name = StringValue(name) ;
value = xmlTextReaderGetAttribute(reader, (xmlChar*)StringValuePtr(name));
if(value == NULL) {
/* this section is an attempt to workaround older versions of libxml that
don't handle namespaces properly in all attribute-and-friends functions */
xmlChar *prefix = NULL ;
xmlChar *localname = xmlSplitQName2((xmlChar*)StringValuePtr(name), &prefix);
if (localname != NULL) {
value = xmlTextReaderLookupNamespace(reader, localname);
xmlFree(localname) ;
} else {
value = xmlTextReaderLookupNamespace(reader, prefix);
}
xmlFree(prefix);
}
if(value == NULL) return Qnil;
VALUE MAYBE_UNUSED(enc) = rb_iv_get(self, "@encoding");
VALUE rb_value = NOKOGIRI_STR_NEW2(value,
RTEST(enc) ? StringValuePtr(enc) : NULL);
xmlFree(value);
return rb_value;
}
/* @method String XmlReader.lookupNameSpace(String ns) */
METHOD XmlReader_lookupNameSpace(Ctx *ctx, knh_sfp_t *sfp)
{
xmlTextReaderPtr reader = (xmlTextReaderPtr) p_cptr(sfp[0]);
xmlChar* ns = (xmlChar*) p_char(sfp[1]);
char* ret = (char*) xmlTextReaderLookupNamespace(reader,ns);
KNH_RETURN(ctx,sfp,new_String(ctx,B(ret),NULL));
}
//## @Native String XmlReader.lookupNameSpace(String ns);
static KMETHOD XmlReader_lookupNameSpace(KonohaContext *kctx, KonohaStack *sfp)
{
xmlTextReaderPtr reader = getRawXmlReader(sfp[0]);
xmlChar* ns = (xmlChar *)kString_text(sfp[1].asString);
char* ret = (reader != NULL) ? (char *) xmlTextReaderLookupNamespace(reader,ns) : NULL;
KReturn(KLIB new_kString(kctx, GcUnsafe, ret, strlen(ret), 0));
}
/*
* call-seq:
* reader.lookup_namespace(prefix) -> value
*
* Resolve a namespace prefix in the scope of the current element.
* To return the default namespace, specify nil as +prefix+.
*/
static VALUE rxml_reader_lookup_namespace(VALUE self, VALUE prefix)
{
VALUE result = Qnil;
xmlTextReaderPtr xReader = rxml_text_reader_get(self);
const xmlChar *xnamespace = xmlTextReaderLookupNamespace(xReader, (const xmlChar *) StringValueCStr(prefix));
const xmlChar *xencoding = xmlTextReaderConstEncoding(xReader);
if (xnamespace)
{
result = rxml_new_cstr((const char*)xnamespace, (const char*)xencoding);
xmlFree((void *)xnamespace);
}
return result;
}
/* reader:lookup_namespace() */
static int xmlreader_lookup_namespace(lua_State *L) {
xmlreader xr = check_xmlreader(L, 1);
char *ret = (char*)xmlTextReaderLookupNamespace(xr, (xmlChar*)luaL_checkstring(L, 2));
if (ret) {
lua_pushstring(L, ret);
xmlFree(ret);
return 1;
} else {
lua_pushnil(L);
xmlreader_pusherror(L);
return 2;
}
}
/*
* call-seq:
* reader.lookup_namespace(prefix) -> value
*
* Resolve a namespace prefix in the scope of the current element.
* To return the default namespace, specify nil as +prefix+.
*/
static VALUE rxml_reader_lookup_namespace(VALUE self, VALUE prefix)
{
const xmlChar *result = xmlTextReaderLookupNamespace(rxml_text_reader_get(
self), (const xmlChar *) StringValueCStr(prefix));
return (result == NULL ? Qnil : rb_str_new2((const char*)result));
}