1/*
2 * Copyright (c) 2008, 2009, Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "platform/LinkHash.h"
33
34#include "platform/weborigin/KURL.h"
35#include "public/platform/Platform.h"
36#include "wtf/text/StringUTF8Adaptor.h"
37#include <url/url_util.h>
38
39namespace blink {
40
41static bool resolveRelative(const KURL& base, const String& relative, url::RawCanonOutput<2048>* buffer)
42{
43    // We use these low-level GURL functions to avoid converting back and forth from UTF-8 unnecessarily.
44    url::Parsed parsed;
45    StringUTF8Adaptor baseUTF8(base.string());
46    if (relative.is8Bit()) {
47        StringUTF8Adaptor relativeUTF8(relative);
48        return url::ResolveRelative(baseUTF8.data(), baseUTF8.length(), base.parsed(), relativeUTF8.data(), relativeUTF8.length(), 0, buffer, &parsed);
49    }
50    return url::ResolveRelative(baseUTF8.data(), baseUTF8.length(), base.parsed(), relative.characters16(), relative.length(), 0, buffer, &parsed);
51}
52
53LinkHash visitedLinkHash(const KURL& base, const AtomicString& relative)
54{
55    if (relative.isNull())
56        return 0;
57    url::RawCanonOutput<2048> buffer;
58    if (!resolveRelative(base, relative.string(), &buffer))
59        return 0;
60    return blink::Platform::current()->visitedLinkHash(buffer.data(), buffer.length());
61}
62
63} // namespace blink
64