/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "public/platform/WebString.h"

#include "public/platform/WebCString.h"
#include "wtf/text/AtomicString.h"
#include "wtf/text/CString.h"
#include "wtf/text/StringUTF8Adaptor.h"
#include "wtf/text/WTFString.h"

namespace blink {

void WebString::reset()
{
    m_private.reset();
}

void WebString::assign(const WebString& other)
{
    assign(other.m_private.get());
}

void WebString::assign(const WebUChar* data, size_t length)
{
    assign(StringImpl::create8BitIfPossible(data, length).get());
}

size_t WebString::length() const
{
    return m_private.isNull() ? 0 : m_private->length();
}

WebUChar WebString::at(unsigned i) const
{
    ASSERT(!m_private.isNull());
    return (*m_private.get())[i];
}

bool WebString::is8Bit() const
{
    return m_private->is8Bit();
}

const WebLChar* WebString::data8() const
{
    return !m_private.isNull() && is8Bit() ? m_private->characters8() : 0;
}

const WebUChar* WebString::data16() const
{
    return !m_private.isNull() && !is8Bit() ? m_private->characters16() : 0;
}

std::string WebString::utf8() const
{
    StringUTF8Adaptor utf8(m_private.get());
    return std::string(utf8.data(), utf8.length());
}

WebString WebString::fromUTF8(const char* data, size_t length)
{
    return String::fromUTF8(data, length);
}

WebString WebString::fromUTF8(const char* data)
{
    return String::fromUTF8(data);
}

std::string WebString::latin1() const
{
    String string(m_private.get());

    if (string.isEmpty())
        return std::string();

    if (string.is8Bit())
        return std::string(reinterpret_cast<const char*>(string.characters8()), string.length());

    WebCString latin1 = string.latin1();
    return std::string(latin1.data(), latin1.length());
}

WebString WebString::fromLatin1(const WebLChar* data, size_t length)
{
    return String(data, length);
}

bool WebString::equals(const WebString& s) const
{
    return equal(m_private.get(), s.m_private.get());
}

WebString::WebString(const WTF::String& s)
    : m_private(s.impl())
{
}

WebString& WebString::operator=(const WTF::String& s)
{
    assign(s.impl());
    return *this;
}

WebString::operator WTF::String() const
{
    return m_private.get();
}

WebString::WebString(const WTF::AtomicString& s)
{
    assign(s.string());
}

WebString& WebString::operator=(const WTF::AtomicString& s)
{
    assign(s.string());
    return *this;
}

WebString::operator WTF::AtomicString() const
{
    return WTF::AtomicString(m_private.get());
}

void WebString::assign(WTF::StringImpl* p)
{
    m_private = p;
}

} // namespace blink