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27 #include "TextCodecUserDefined.h"
29 #include "PlatformString.h"
31 #include <wtf/text/CString.h>
32 #include <wtf/text/StringBuffer.h>
33 #include <wtf/text/StringBuilder.h>
34 #include <wtf/PassOwnPtr.h>
38 void TextCodecUserDefined::registerEncodingNames(EncodingNameRegistrar registrar)
40 registrar("x-user-defined", "x-user-defined");
43 static PassOwnPtr<TextCodec> newStreamingTextDecoderUserDefined(const TextEncoding&, const void*)
45 return adoptPtr(new TextCodecUserDefined);
48 void TextCodecUserDefined::registerCodecs(TextCodecRegistrar registrar)
50 registrar("x-user-defined", newStreamingTextDecoderUserDefined, 0);
53 String TextCodecUserDefined::decode(const char* bytes, size_t length, bool, bool, bool&)
56 result.reserveCapacity(length);
58 for (size_t i = 0; i < length; ++i) {
59 signed char c = bytes[i];
60 result.append(static_cast<UChar>(c & 0xF7FF));
63 return result.toString();
66 static CString encodeComplexUserDefined(const UChar* characters, size_t length, UnencodableHandling handling)
68 Vector<char> result(length);
69 char* bytes = result.data();
71 size_t resultLength = 0;
72 for (size_t i = 0; i < length; ) {
74 U16_NEXT(characters, i, length, c);
75 signed char signedByte = c;
76 if ((signedByte & 0xF7FF) == c)
77 bytes[resultLength++] = signedByte;
79 // No way to encode this character with x-user-defined.
80 UnencodableReplacementArray replacement;
81 int replacementLength = TextCodec::getUnencodableReplacement(c, handling, replacement);
82 result.grow(resultLength + replacementLength + length - i);
83 bytes = result.data();
84 memcpy(bytes + resultLength, replacement, replacementLength);
85 resultLength += replacementLength;
89 return CString(bytes, resultLength);
92 CString TextCodecUserDefined::encode(const UChar* characters, size_t length, UnencodableHandling handling)
95 CString string = CString::newUninitialized(length, bytes);
97 // Convert the string a fast way and simultaneously do an efficient check to see if it's all ASCII.
99 for (size_t i = 0; i < length; ++i) {
100 UChar c = characters[i];
105 if (!(ored & 0xFF80))
108 // If it wasn't all ASCII, call the function that handles more-complex cases.
109 return encodeComplexUserDefined(characters, length, handling);
112 } // namespace WebCore