third_party/WebKit/Source/wtf/text/StringCF.cpp

   1 /**
   2  * Copyright (C) 2006, 2012 Apple Computer, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public License
  15  * along with this library; see the file COPYING.LIB.  If not, write to
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  *
  19  */
  20
  21 #include "config.h"
  22
  23 #include "wtf/text/WTFString.h"
  24
  25 #if USE(CF)
  26
  27 #include "wtf/RetainPtr.h"
  28 #include <CoreFoundation/CoreFoundation.h>
  29
  30 namespace WTF {
  31
  32 String::String(CFStringRef str)
  33 {
  34     if (!str)
  35         return;
  36
  37     CFIndex size = CFStringGetLength(str);
  38     if (!size) {
  39         m_impl = StringImpl::empty();
  40     } else {
  41         Vector<LChar, 1024> lcharBuffer(size);
  42         CFIndex usedBufLen;
  43         CFIndex convertedsize = CFStringGetBytes(str, CFRangeMake(0, size), kCFStringEncodingISOLatin1, 0, false, lcharBuffer.data(), size, &usedBufLen);
  44         if ((convertedsize == size) && (usedBufLen == size)) {
  45             m_impl = StringImpl::create(lcharBuffer.data(), size);
  46             return;
  47         }
  48
  49         Vector<UChar, 1024> buffer(size);
  50         CFStringGetCharacters(str, CFRangeMake(0, size), (UniChar*)buffer.data());
  51         m_impl = StringImpl::create(buffer.data(), size);
  52     }
  53 }
  54
  55 RetainPtr<CFStringRef> String::createCFString() const
  56 {
  57     if (!m_impl)
  58         return CFSTR("");
  59
  60     return m_impl->createCFString();
  61 }
  62
  63 }
  64
  65 #endif // USE(CF)