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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 */

#include "config.h"
#include "platform/LinkHash.h"

#include "platform/weborigin/KURL.h"
#include "public/platform/Platform.h"
#include "wtf/text/StringUTF8Adaptor.h"
#include <url/url_util.h>

namespace WebCore {

static bool resolveRelative(const KURL& base, const String& relative, url::RawCanonOutput<2048>* buffer)
{
    // We use these low-level GURL functions to avoid converting back and forth from UTF-8 unnecessarily.
    url::Parsed parsed;
    StringUTF8Adaptor baseUTF8(base.string());
    if (relative.is8Bit()) {
        StringUTF8Adaptor relativeUTF8(relative);
        return url::ResolveRelative(baseUTF8.data(), baseUTF8.length(), base.parsed(), relativeUTF8.data(), relativeUTF8.length(), 0, buffer, &parsed);
    }
    return url::ResolveRelative(baseUTF8.data(), baseUTF8.length(), base.parsed(), relative.characters16(), relative.length(), 0, buffer, &parsed);
}

LinkHash visitedLinkHash(const KURL& base, const AtomicString& relative)
{
    if (relative.isNull())
        return 0;
    url::RawCanonOutput<2048> buffer;
    if (!resolveRelative(base, relative.string(), &buffer))
        return 0;
    return blink::Platform::current()->visitedLinkHash(buffer.data(), buffer.length());
}

} // namespace WebCore