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      1 /*
      2  * Copyright (C) 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 "WebEntities.h"
     33 
     34 #include "WebString.h"
     35 
     36 #include <string.h>
     37 #include <wtf/HashMap.h>
     38 #include <wtf/text/StringBuilder.h>
     39 #include <wtf/text/WTFString.h>
     40 
     41 namespace WebKit {
     42 
     43 WebEntities::WebEntities(bool xmlEntities)
     44 {
     45     ASSERT(m_entitiesMap.isEmpty());
     46     m_entitiesMap.set(0x003c, "lt");
     47     m_entitiesMap.set(0x003e, "gt");
     48     m_entitiesMap.set(0x0026, "amp");
     49     m_entitiesMap.set(0x0027, "apos");
     50     m_entitiesMap.set(0x0022, "quot");
     51     // We add #39 for test-compatibility reason.
     52     if (!xmlEntities)
     53         m_entitiesMap.set(0x0027, String("#39"));
     54 }
     55 
     56 String WebEntities::entityNameByCode(int code) const
     57 {
     58     if (m_entitiesMap.contains(code))
     59         return m_entitiesMap.get(code);
     60     return "";
     61 }
     62 
     63 String WebEntities::convertEntitiesInString(const String& value) const
     64 {
     65     unsigned len = value.length();
     66     const UChar* startPos = value.characters();
     67     const UChar* curPos = startPos;
     68 
     69     // FIXME: Optimize - create StringBuilder only if value has any entities.
     70     StringBuilder result;
     71     while (len--) {
     72         if (m_entitiesMap.contains(*curPos)) {
     73             // Append content before entity code.
     74             if (curPos > startPos)
     75                 result.append(String(startPos, curPos - startPos));
     76             result.append('&');
     77             result.append(m_entitiesMap.get(*curPos));
     78             result.append(';');
     79             startPos = ++curPos;
     80         } else
     81             curPos++;
     82     }
     83     // Append the remaining content.
     84     if (curPos > startPos)
     85         result.append(String(startPos, curPos - startPos));
     86 
     87     return result.toString();
     88 }
     89 
     90 } // namespace WebKit
     91