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

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6 #include "wtf/text/TextCodecReplacement.h"
   7
   8 #include "wtf/PassOwnPtr.h"
   9 #include "wtf/text/CharacterNames.h"
  10 #include "wtf/text/WTFString.h"
  11
  12 namespace WTF {
  13
  14 TextCodecReplacement::TextCodecReplacement()
  15     : m_sentEOF(false)
  16 {
  17 }
  18
  19 void TextCodecReplacement::registerEncodingNames(EncodingNameRegistrar registrar)
  20 {
  21     // The 'replacement' label itself should not be referenceable by
  22     // resources or script - it's a specification convenience - but much of
  23     // the wtf/text API asserts that an encoding name is a label for itself.
  24     // This is handled in TextEncoding by marking it as not valid.
  25     registrar("replacement", "replacement");
  26
  27     registrar("csiso2022kr", "replacement");
  28     registrar("hz-gb-2312", "replacement");
  29     registrar("iso-2022-cn", "replacement");
  30     registrar("iso-2022-cn-ext", "replacement");
  31     registrar("iso-2022-kr", "replacement");
  32 }
  33
  34 static PassOwnPtr<TextCodec> newStreamingTextDecoderReplacement(const TextEncoding&, const void*)
  35 {
  36     return adoptPtr(new TextCodecReplacement);
  37 }
  38
  39 void TextCodecReplacement::registerCodecs(TextCodecRegistrar registrar)
  40 {
  41     registrar("replacement", newStreamingTextDecoderReplacement, 0);
  42 }
  43
  44 String TextCodecReplacement::decode(const char*, size_t, FlushBehavior, bool, bool& sawError)
  45 {
  46     sawError = true;
  47     if (m_sentEOF)
  48         return String();
  49
  50     m_sentEOF = true;
  51     return String(&replacementCharacter, 1);
  52 }
  53
  54 } // namespace WTF