Package com.ctc.wstx.io
Class UTF32Reader
- java.lang.Object
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- java.io.Reader
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- com.ctc.wstx.io.BaseReader
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- com.ctc.wstx.io.UTF32Reader
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- All Implemented Interfaces:
java.io.Closeable
,java.lang.AutoCloseable
,java.lang.Readable
public final class UTF32Reader extends BaseReader
Since JDK does not come with UTF-32/UCS-4, let's implement a simple decoder to use.
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Field Summary
Fields Modifier and Type Field Description protected boolean
mBigEndian
protected int
mByteCount
Total read byte count; used for error reporting purposesprotected int
mCharCount
Total read character count; used for error reporting purposesprotected char
mSurrogate
Although input is fine with full Unicode set, Java still uses 16-bit chars, so we may have to split high-order chars into surrogate pairs.protected boolean
mXml11
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Fields inherited from class com.ctc.wstx.io.BaseReader
CHAR_DEL, CONVERT_LSEP_TO, CONVERT_NEL_TO, mByteBuffer, mByteBufferEnd, mBytePtr, mConfig, mTmpBuf, NULL_BYTE, NULL_CHAR
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Constructor Summary
Constructors Constructor Description UTF32Reader(ReaderConfig cfg, java.io.InputStream in, byte[] buf, int ptr, int len, boolean recycleBuffer, boolean isBigEndian)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description private boolean
loadMore(int available)
int
read(char[] cbuf, int start, int len)
private void
reportInvalid(int value, int offset, java.lang.String msg)
private void
reportUnexpectedEOF(int gotBytes, int needed)
void
setXmlCompliancy(int xmlVersion)
Method that can be called to indicate the xml conformance used when reading content using this reader.-
Methods inherited from class com.ctc.wstx.io.BaseReader
canModifyBuffer, close, freeBuffers, getStream, read, readBytes, readBytesAt, reportBounds, reportInvalidXml11, reportStrangeStream
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Field Detail
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mBigEndian
protected final boolean mBigEndian
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mXml11
protected boolean mXml11
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mSurrogate
protected char mSurrogate
Although input is fine with full Unicode set, Java still uses 16-bit chars, so we may have to split high-order chars into surrogate pairs.
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mCharCount
protected int mCharCount
Total read character count; used for error reporting purposes
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mByteCount
protected int mByteCount
Total read byte count; used for error reporting purposes
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Constructor Detail
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UTF32Reader
public UTF32Reader(ReaderConfig cfg, java.io.InputStream in, byte[] buf, int ptr, int len, boolean recycleBuffer, boolean isBigEndian)
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Method Detail
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setXmlCompliancy
public void setXmlCompliancy(int xmlVersion)
Description copied from class:BaseReader
Method that can be called to indicate the xml conformance used when reading content using this reader. Some of the character validity checks need to be done at reader level, and sometimes they depend on xml level (for example, xml 1.1 has new linefeeds and both more and less restricted characters).- Specified by:
setXmlCompliancy
in classBaseReader
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read
public int read(char[] cbuf, int start, int len) throws java.io.IOException
- Specified by:
read
in classjava.io.Reader
- Throws:
java.io.IOException
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reportUnexpectedEOF
private void reportUnexpectedEOF(int gotBytes, int needed) throws java.io.IOException
- Throws:
java.io.IOException
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reportInvalid
private void reportInvalid(int value, int offset, java.lang.String msg) throws java.io.IOException
- Throws:
java.io.IOException
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loadMore
private boolean loadMore(int available) throws java.io.IOException
- Parameters:
available
- Number of "unused" bytes in the input buffer- Returns:
- True, if enough bytes were read to allow decoding of at least one full character; false if EOF was encountered instead.
- Throws:
java.io.IOException
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