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Diffstat (limited to 'parser/html/java/htmlparser/src/nu/validator/encoding/InfallibleSingleByteDecoder.java')
-rw-r--r-- | parser/html/java/htmlparser/src/nu/validator/encoding/InfallibleSingleByteDecoder.java | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/parser/html/java/htmlparser/src/nu/validator/encoding/InfallibleSingleByteDecoder.java b/parser/html/java/htmlparser/src/nu/validator/encoding/InfallibleSingleByteDecoder.java new file mode 100644 index 000000000..7cc63072c --- /dev/null +++ b/parser/html/java/htmlparser/src/nu/validator/encoding/InfallibleSingleByteDecoder.java @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2013-2015 Mozilla Foundation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +package nu.validator.encoding; + +import java.nio.ByteBuffer; +import java.nio.CharBuffer; +import java.nio.charset.CoderResult; + +public class InfallibleSingleByteDecoder extends Decoder { + + protected final char[] upperHalf; + + protected InfallibleSingleByteDecoder(Encoding cs, char[] upperHalf) { + super(cs, 1.0f, 1.0f); + this.upperHalf = upperHalf; + } + + @Override protected CoderResult decodeLoop(ByteBuffer in, CharBuffer out) { + // TODO figure out if it's worthwhile to optimize the case where both + // buffers are array-backed. + for (;;) { + if (!in.hasRemaining()) { + return CoderResult.UNDERFLOW; + } + if (!out.hasRemaining()) { + return CoderResult.OVERFLOW; + } + int b = (int) in.get(); + if (b >= 0) { + out.put((char) b); + } else { + out.put(this.upperHalf[b + 128]); + } + } + } + +} |