Package spark.utils.urldecoding
Class Utf8Appendable
- java.lang.Object
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- spark.utils.urldecoding.Utf8Appendable
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- Direct Known Subclasses:
Utf8StringBuilder
public abstract class Utf8Appendable extends java.lang.Object
Utf8 Appendable abstract base class This abstract class wraps a standardAppendable
and provides methods to append UTF-8 encoded bytes, that are converted into characters. This class is stateful and up to 4 calls toappend(byte)
may be needed before state a character is appended to the string buffer. The UTF-8 decoding is done by this class and no additional buffers or Readers are used. The UTF-8 code was inspired by http://bjoern.hoehrmann.de/utf-8/decoder/dfa/ License information for Bjoern Hoehrmann's code: Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de> 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.
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
Utf8Appendable.NotUtf8Exception
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Field Summary
Fields Modifier and Type Field Description protected java.lang.Appendable
_appendable
private int
_codep
protected int
_state
private static byte[]
BYTE_TABLE
static char
REPLACEMENT
private static byte[]
TRANS_TABLE
private static int
UTF8_ACCEPT
private static int
UTF8_REJECT
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Constructor Summary
Constructors Constructor Description Utf8Appendable(java.lang.Appendable appendable)
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description void
append(byte b)
void
append(char c)
void
append(java.lang.String s, int offset, int length)
protected void
appendByte(byte b)
private void
checkCharAppend()
protected void
checkState()
boolean
isUtf8SequenceComplete()
abstract int
length()
protected void
reset()
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Field Detail
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REPLACEMENT
public static final char REPLACEMENT
- See Also:
- Constant Field Values
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UTF8_ACCEPT
private static final int UTF8_ACCEPT
- See Also:
- Constant Field Values
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UTF8_REJECT
private static final int UTF8_REJECT
- See Also:
- Constant Field Values
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_appendable
protected final java.lang.Appendable _appendable
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_state
protected int _state
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BYTE_TABLE
private static final byte[] BYTE_TABLE
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TRANS_TABLE
private static final byte[] TRANS_TABLE
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_codep
private int _codep
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Method Detail
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length
public abstract int length()
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reset
protected void reset()
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checkCharAppend
private void checkCharAppend() throws java.io.IOException
- Throws:
java.io.IOException
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append
public void append(char c)
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append
public void append(java.lang.String s, int offset, int length)
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append
public void append(byte b)
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appendByte
protected void appendByte(byte b) throws java.io.IOException
- Throws:
java.io.IOException
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isUtf8SequenceComplete
public boolean isUtf8SequenceComplete()
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checkState
protected void checkState()
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