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/**
* Copyright (C) 2001-2002 Thomas Broyer, Charlie Bozeman and Daniel Veillard.
* Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is fur-
* nished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
* NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CON-
* NECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of the authors shall not
* be used in advertising or otherwise to promote the sale, use or other deal-
* ings in this Software without prior written authorization from him.
*/
#include "third_party/blink/renderer/core/xml/xslt_extensions.h"
#include <libxml/xpathInternals.h>
#include <libxslt/extensions.h>
#include <libxslt/extra.h>
#include <libxslt/xsltutils.h>
#include "base/check.h"
namespace blink {
// FIXME: This code is taken from libexslt 1.1.11; should sync with newer
// versions.
static void ExsltNodeSetFunction(xmlXPathParserContextPtr ctxt, int nargs) {
xmlChar* strval;
xmlNodePtr ret_node;
xmlXPathObjectPtr ret;
if (nargs != 1) {
xmlXPathSetArityError(ctxt);
return;
}
if (xmlXPathStackIsNodeSet(ctxt)) {
xsltFunctionNodeSet(ctxt, nargs);
return;
}
// node-set can also take a string and turn it into a singleton node
// set with one text node. This may null-deref if allocating the
// document, text node, etc. fails; that behavior is expected.
// Create a document to hold the text node result.
xsltTransformContextPtr tctxt = xsltXPathGetTransformContext(ctxt);
xmlDocPtr fragment = xsltCreateRVT(tctxt);
xsltRegisterLocalRVT(tctxt, fragment);
// Create the text node and wrap it in a result set.
strval = xmlXPathPopString(ctxt);
ret_node = xmlNewDocText(fragment, strval);
xmlAddChild(reinterpret_cast<xmlNodePtr>(fragment), ret_node);
ret = xmlXPathNewNodeSet(ret_node);
CHECK(ret);
if (strval)
xmlFree(strval);
valuePush(ctxt, ret);
}
void RegisterXSLTExtensions(xsltTransformContextPtr ctxt) {
xsltRegisterExtFunction(ctxt, (const xmlChar*)"node-set",
(const xmlChar*)"http://exslt.org/common",
ExsltNodeSetFunction);
}
} // namespace blink
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