Move Source/WTF/wtf to Source/wtf

Source/WTF/wtf/text/CString.cpp

-/*
- * Copyright (C) 2003, 2006, 2008, 2009, 2010, 2012 Apple 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:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. 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.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 "CString.h"
-
-using namespace std;
-
-namespace WTF {
-
-PassRefPtr<CStringBuffer> CStringBuffer::createUninitialized(size_t length)
-{
-    RELEASE_ASSERT(length <= (numeric_limits<unsigned>::max() - sizeof(CStringBuffer)));
-
-    // CStringBuffer already has space for one character, we do not need to add +1 to the length
-    // to store the terminating zero.
-    size_t size = sizeof(CStringBuffer) + length;
-    CStringBuffer* stringBuffer = static_cast<CStringBuffer*>(fastMalloc(size));
-    return adoptRef(new (NotNull, stringBuffer) CStringBuffer(length));
-}
-
-CString::CString(const char* str)
-{
-    if (!str)
-        return;
-
-    init(str, strlen(str));
-}
-
-CString::CString(const char* str, size_t length)
-{
-    if (!str) {
-        ASSERT(!length);
-        return;
-    }
-
-    init(str, length);
-}
-
-void CString::init(const char* str, size_t length)
-{
-    ASSERT(str);
-
-    m_buffer = CStringBuffer::createUninitialized(length);
-    memcpy(m_buffer->mutableData(), str, length); 
-    m_buffer->mutableData()[length] = '\0';
-}
-
-char* CString::mutableData()
-{
-    copyBufferIfNeeded();
-    if (!m_buffer)
-        return 0;
-    return m_buffer->mutableData();
-}
-    
-CString CString::newUninitialized(size_t length, char*& characterBuffer)
-{
-    CString result;
-    result.m_buffer = CStringBuffer::createUninitialized(length);
-    char* bytes = result.m_buffer->mutableData();
-    bytes[length] = '\0';
-    characterBuffer = bytes;
-    return result;
-}
-
-void CString::copyBufferIfNeeded()
-{
-    if (!m_buffer || m_buffer->hasOneRef())
-        return;
-
-    RefPtr<CStringBuffer> buffer = m_buffer.release();
-    size_t length = buffer->length();
-    m_buffer = CStringBuffer::createUninitialized(length);
-    memcpy(m_buffer->mutableData(), buffer->data(), length + 1);
-}
-
-bool CString::isSafeToSendToAnotherThread() const
-{
-    return !m_buffer || m_buffer->hasOneRef();
-}
-
-bool operator==(const CString& a, const CString& b)
-{
-    if (a.isNull() != b.isNull())
-        return false;
-    if (a.length() != b.length())
-        return false;
-    return !memcmp(a.data(), b.data(), a.length());
-}
-
-bool operator==(const CString& a, const char* b)
-{
-    if (a.isNull() != !b)
-        return false;
-    if (!b)
-        return true;
-    return !strcmp(a.data(), b);
-}
-
-} // namespace WTF