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33 #include "modules/encoding/TextDecoder.h"
35 #include "bindings/v8/ExceptionState.h"
36 #include "core/dom/ExceptionCode.h"
37 #include "wtf/text/TextEncodingRegistry.h"
41 PassRefPtr<TextDecoder> TextDecoder::create(const String& label, const Dictionary& options, ExceptionState& exceptionState)
43 const String& encodingLabel = label.isNull() ? String("utf-8") : label;
45 WTF::TextEncoding encoding(encodingLabel);
46 if (!encoding.isValid()) {
47 exceptionState.throwTypeError("The encoding label provided ('" + encodingLabel + "') is invalid.");
52 options.get("fatal", fatal);
54 return adoptRef(new TextDecoder(encoding.name(), fatal));
58 TextDecoder::TextDecoder(const String& encoding, bool fatal)
59 : m_encoding(encoding)
60 , m_codec(newTextCodec(m_encoding))
66 TextDecoder::~TextDecoder()
70 String TextDecoder::encoding() const
72 String name = String(m_encoding.name()).lower();
73 // Where possible, encoding aliases should be handled by changes to Chromium's ICU or Blink's WTF.
74 // The same codec is used, but WTF maintains a different name/identity for these.
75 if (name == "iso-8859-1" || name == "us-ascii")
76 return "windows-1252";
80 String TextDecoder::decode(ArrayBufferView* input, const Dictionary& options, ExceptionState& exceptionState)
83 options.get("stream", stream);
85 const char* start = input ? static_cast<const char*>(input->baseAddress()) : 0;
86 size_t length = input ? input->byteLength() : 0;
90 // FIXME: Not all TextCodec implementations handle |flush| - notably TextCodecUTF16
91 // ignores it and never flushes!
93 bool sawError = false;
94 String s = m_codec->decode(start, length, flush, m_fatal, sawError);
96 if (m_fatal && sawError) {
97 exceptionState.throwDOMException(EncodingError, "The encoded data was not valid.");
101 if (!m_bomSeen && !s.isEmpty()) {
103 String name(m_encoding.name());
104 if ((name == "UTF-8" || name == "UTF-16LE" || name == "UTF-16BE") && s[0] == 0xFEFF)
114 } // namespace WebCore