WebEntities.cpp   [plain text]

/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "config.h"
#include "WebEntities.h"

#include "platform/WebString.h"

#include <string.h>
#include <wtf/HashMap.h>
#include <wtf/text/StringBuilder.h>
#include <wtf/text/WTFString.h>

namespace WebKit {

WebEntities::WebEntities(bool xmlEntities)
{
    ASSERT(m_entitiesMap.isEmpty());
    m_entitiesMap.set(0x003c, "lt");
    m_entitiesMap.set(0x003e, "gt");
    m_entitiesMap.set(0x0026, "amp");
    m_entitiesMap.set(0x0027, "apos");
    m_entitiesMap.set(0x0022, "quot");
    // We add #39 for test-compatibility reason.
    if (!xmlEntities)
        m_entitiesMap.set(0x0027, String("#39"));
}

String WebEntities::entityNameByCode(int code) const
{
    if (m_entitiesMap.contains(code))
        return m_entitiesMap.get(code);
    return "";
}

String WebEntities::convertEntitiesInString(const String& value) const
{
    unsigned len = value.length();
    const UChar* startPos = value.characters();
    const UChar* curPos = startPos;

    // FIXME: Optimize - create StringBuilder only if value has any entities.
    StringBuilder result;
    while (len--) {
        if (m_entitiesMap.contains(*curPos)) {
            // Append content before entity code.
            if (curPos > startPos)
                result.append(String(startPos, curPos - startPos));
            result.append('&');
            result.append(m_entitiesMap.get(*curPos));
            result.append(';');
            startPos = ++curPos;
        } else
            curPos++;
    }
    // Append the remaining content.
    if (curPos > startPos)
        result.append(String(startPos, curPos - startPos));

    return result.toString();
}

} // namespace WebKit