1 /*

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

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

     4  *

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

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

     7  * License as published by the Free Software Foundation; either

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

     9  *

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

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

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

    13  * Library General Public License for more details.

    14  *

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

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

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

    18  * Boston, MA 02110-1301, USA.

    19  *

    20  */

    21 

    22 #include "config.h"

    23 #include "CSSHelper.h"

    24 

    25 #include "PlatformString.h"

    26 #include <wtf/Vector.h>

    27 

    28 namespace WebCore {

    29 

    30 String deprecatedParseURL(const String& url)

    31 {

    32     StringImpl* i = url.impl();

    33     if (!i)

    34         return url;

    35 

    36     int length = i->length();

    37 

    38     int o = 0;

    39     int l = length;

    40 

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

    42         ++o;

    43         --l;

    44     }

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

    46         --l;

    47 

    48     if (l >= 5

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

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

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

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

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

    54         o += 4;

    55         l -= 5;

    56     }

    57 

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

    59         ++o;

    60         --l;

    61     }

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

    63         --l;

    64 

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

    66         o++;

    67         l -= 2;

    68     }

    69 

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

    71         ++o;

    72         --l;

    73     }

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

    75         --l;

    76 

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

    78 

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

    80     if (l == length) {

    81         int k;

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

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

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

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

    86                 break;

    87         }

    88         if (k == length)

    89             return url;

    90     }

    91 

    92     Vector<UChar, 2048> buffer(l);

    93 

    94     int nl = 0;

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

    96         UChar c = characters[k];

    97         if (c > '\r')

    98             buffer[nl++] = c;

    99     }

   100 

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

   102 }

   103 

   104 } // namespace WebCore