1/**
2 * Copyright (C) 2001-2002 Thomas Broyer, Charlie Bozeman and Daniel Veillard.
3 * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is fur-
10 * nished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
17 * NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
18 * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CON-
20 * NECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Except as contained in this notice, the name of the authors shall not
23 * be used in advertising or otherwise to promote the sale, use or other deal-
24 * ings in this Software without prior written authorization from him.
25 */
26
27#include "config.h"
28#include "core/xml/XSLTExtensions.h"
29
30#include "platform/RuntimeEnabledFeatures.h"
31#include "wtf/Assertions.h"
32#include <libxml/xpathInternals.h>
33#include <libxslt/extensions.h>
34#include <libxslt/extra.h>
35#include <libxslt/xsltutils.h>
36
37namespace blink {
38
39// FIXME: This code is taken from libexslt 1.1.11; should sync with newer
40// versions.
41static void exsltNodeSetFunction(xmlXPathParserContextPtr ctxt, int nargs)
42{
43    xmlChar* strval;
44    xmlNodePtr retNode;
45    xmlXPathObjectPtr ret;
46
47    if (nargs != 1) {
48        xmlXPathSetArityError(ctxt);
49        return;
50    }
51
52    if (xmlXPathStackIsNodeSet(ctxt)) {
53        xsltFunctionNodeSet(ctxt, nargs);
54        return;
55    }
56
57    strval = xmlXPathPopString(ctxt);
58    retNode = xmlNewDocText(0, strval);
59    ret = xmlXPathNewValueTree(retNode);
60
61    // FIXME: It might be helpful to push any errors from xmlXPathNewValueTree
62    // up to the Javascript Console.
63    if (ret)
64        ret->type = XPATH_NODESET;
65
66    if (strval)
67        xmlFree(strval);
68
69    valuePush(ctxt, ret);
70}
71
72void registerXSLTExtensions(xsltTransformContextPtr ctxt)
73{
74    ASSERT(RuntimeEnabledFeatures::xsltEnabled());
75    xsltRegisterExtFunction(ctxt, (const xmlChar*)"node-set", (const xmlChar*)"http://exslt.org/common", exsltNodeSetFunction);
76}
77
78} // namespace blink
79