/*

 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)

 * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public License

 * along with this library; see the file COPYING.LIB.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 *

 */

#include "config.h"

#include "CSSHelper.h"

#include "PlatformString.h"

#include <wtf/Vector.h>

namespace WebCore {

String deprecatedParseURL(const String& url)

{

    StringImpl* i = url.impl();

    if (!i)

        return url;

    int length = i->length();

    int o = 0;

    int l = length;

    while (0 < l && (*i)[o] <= ' ') {

        ++o;

        --l;

    }

    while (l > 0 && (*i)[o + l - 1] <= ' ')

        --l;

    if (l >= 5

            && ((*i)[o] == 'u' || (*i)[o] == 'U')

            && ((*i)[o + 1] == 'r' || (*i)[o + 1] == 'R')

            && ((*i)[o + 2] == 'l' || (*i)[o + 2] == 'L')

            && (*i)[o + 3] == '('

            && (*i)[o + l - 1] == ')') {

        o += 4;

        l -= 5;

    }

    while (0 < l && (*i)[o] <= ' ') {

        ++o;

        --l;

    }

    while (l > 0 && (*i)[o + l - 1] <= ' ')

        --l;

    if (l >= 2 && (*i)[o] == (*i)[o + l - 1] && ((*i)[o] == '\'' || (*i)[o] == '\"')) {

        o++;

        l -= 2;

    }

    while (0 < l && (*i)[o] <= ' ') {

        ++o;

        --l;

    }

    while (l > 0 && (*i)[o + l - 1] <= ' ')

        --l;

    const UChar* characters = i->characters();

    // Optimize for the likely case there there is nothing to strip.

    if (l == length) {

        int k;

        // If the URL has any control characters in it, we have to strip them.

        // '\r' (ascii value 13) is the largest control character.

        for (k = 0; k < length; k++) {

            if (characters[k] <= '\r')

                break;

        }

        if (k == length)

            return url;

    }

    Vector<UChar, 2048> buffer(l);

    int nl = 0;

    for (int k = o; k < o + l; k++) {

        UChar c = characters[k];

        if (c > '\r')

            buffer[nl++] = c;

    }

    return String(buffer.data(), nl);

}

} // namespace WebCore