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author | Steve Block <steveblock@google.com> | 2011-05-06 11:45:16 +0100 |
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committer | Steve Block <steveblock@google.com> | 2011-05-12 13:44:10 +0100 |
commit | cad810f21b803229eb11403f9209855525a25d57 (patch) | |
tree | 29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /Source/WebCore/platform/text/TextCodecUserDefined.cpp | |
parent | 121b0cf4517156d0ac5111caf9830c51b69bae8f (diff) | |
download | external_webkit-cad810f21b803229eb11403f9209855525a25d57.zip external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.bz2 |
Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'Source/WebCore/platform/text/TextCodecUserDefined.cpp')
-rw-r--r-- | Source/WebCore/platform/text/TextCodecUserDefined.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/Source/WebCore/platform/text/TextCodecUserDefined.cpp b/Source/WebCore/platform/text/TextCodecUserDefined.cpp new file mode 100644 index 0000000..70d8673 --- /dev/null +++ b/Source/WebCore/platform/text/TextCodecUserDefined.cpp @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2007, 2008 Apple, Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "TextCodecUserDefined.h" + +#include "PlatformString.h" +#include <stdio.h> +#include <wtf/text/CString.h> +#include <wtf/text/StringBuffer.h> +#include <wtf/PassOwnPtr.h> + +namespace WebCore { + +void TextCodecUserDefined::registerEncodingNames(EncodingNameRegistrar registrar) +{ + registrar("x-user-defined", "x-user-defined"); +} + +static PassOwnPtr<TextCodec> newStreamingTextDecoderUserDefined(const TextEncoding&, const void*) +{ + return new TextCodecUserDefined; +} + +void TextCodecUserDefined::registerCodecs(TextCodecRegistrar registrar) +{ + registrar("x-user-defined", newStreamingTextDecoderUserDefined, 0); +} + +String TextCodecUserDefined::decode(const char* bytes, size_t length, bool, bool, bool&) +{ + UChar* buffer; + String result = String::createUninitialized(length, buffer); + + for (size_t i = 0; i < length; ++i) { + signed char c = bytes[i]; + buffer[i] = c & 0xF7FF; + } + + return result; +} + +static CString encodeComplexUserDefined(const UChar* characters, size_t length, UnencodableHandling handling) +{ + Vector<char> result(length); + char* bytes = result.data(); + + size_t resultLength = 0; + for (size_t i = 0; i < length; ) { + UChar32 c; + U16_NEXT(characters, i, length, c); + signed char signedByte = c; + if ((signedByte & 0xF7FF) == c) + bytes[resultLength++] = signedByte; + else { + // No way to encode this character with x-user-defined. + UnencodableReplacementArray replacement; + int replacementLength = TextCodec::getUnencodableReplacement(c, handling, replacement); + result.grow(resultLength + replacementLength + length - i); + bytes = result.data(); + memcpy(bytes + resultLength, replacement, replacementLength); + resultLength += replacementLength; + } + } + + return CString(bytes, resultLength); +} + +CString TextCodecUserDefined::encode(const UChar* characters, size_t length, UnencodableHandling handling) +{ + char* bytes; + CString string = CString::newUninitialized(length, bytes); + + // Convert the string a fast way and simultaneously do an efficient check to see if it's all ASCII. + UChar ored = 0; + for (size_t i = 0; i < length; ++i) { + UChar c = characters[i]; + bytes[i] = c; + ored |= c; + } + + if (!(ored & 0xFF80)) + return string; + + // If it wasn't all ASCII, call the function that handles more-complex cases. + return encodeComplexUserDefined(characters, length, handling); +} + +} // namespace WebCore |