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* Copyright (C) 2003, 2006, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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PassRefPtr<CStringBuffer> CStringBuffer::createUninitialized(size_t length)
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if (length > (numeric_limits<size_t>::max() - sizeof(CStringBuffer)))
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// CStringBuffer already has space for one character, we do not need to add +1 to the length
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// to store the terminating zero.
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size_t size = sizeof(CStringBuffer) + length;
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CStringBuffer* stringBuffer = static_cast<CStringBuffer*>(fastMalloc(size));
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return adoptRef(new (NotNull, stringBuffer) CStringBuffer(length));
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CString::CString(const char* str)
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init(str, strlen(str));
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CString::CString(const char* str, size_t length)
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void CString::init(const char* str, size_t length)
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m_buffer = CStringBuffer::createUninitialized(length);
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memcpy(m_buffer->mutableData(), str, length);
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m_buffer->mutableData()[length] = '\0';
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char* CString::mutableData()
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return m_buffer->mutableData();
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CString CString::newUninitialized(size_t length, char*& characterBuffer)
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result.m_buffer = CStringBuffer::createUninitialized(length);
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char* bytes = result.m_buffer->mutableData();
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characterBuffer = bytes;
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void CString::copyBufferIfNeeded()
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if (!m_buffer || m_buffer->hasOneRef())
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RefPtr<CStringBuffer> buffer = m_buffer.release();
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size_t length = buffer->length();
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m_buffer = CStringBuffer::createUninitialized(length);
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memcpy(m_buffer->mutableData(), buffer->data(), length + 1);
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bool operator==(const CString& a, const CString& b)
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if (a.isNull() != b.isNull())
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if (a.length() != b.length())
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return !strncmp(a.data(), b.data(), min(a.length(), b.length()));