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Java lang extensions for java6+, a supplement to , replacement of a Guava, commons-lang.
Core utilities, Collection utilities, IO utilities, Cache, Configuration library ...
package com.jn.langx.util;
/**
* Provides a mechanism to iterate over a collection of bytes.
*/
public interface ByteProcessor {
/**
* A {@link ByteProcessor} which finds the first appearance of a specific byte.
*/
class IndexOfProcessor implements ByteProcessor {
private final byte byteToFind;
public IndexOfProcessor(byte byteToFind) {
this.byteToFind = byteToFind;
}
@Override
public boolean process(byte value) {
return value != byteToFind;
}
}
/**
* A {@link ByteProcessor} which finds the first appearance which is not of a specific byte.
*/
class IndexNotOfProcessor implements ByteProcessor {
private final byte byteToNotFind;
public IndexNotOfProcessor(byte byteToNotFind) {
this.byteToNotFind = byteToNotFind;
}
@Override
public boolean process(byte value) {
return value == byteToNotFind;
}
}
/**
* Aborts on a {@code NUL (0x00)}.
*/
ByteProcessor FIND_NUL = new ByteProcessor.IndexOfProcessor((byte) 0);
/**
* Aborts on a non-{@code NUL (0x00)}.
*/
ByteProcessor FIND_NON_NUL = new ByteProcessor.IndexNotOfProcessor((byte) 0);
/**
* Aborts on a {@code CR ('\r')}.
*/
ByteProcessor FIND_CR = new ByteProcessor.IndexOfProcessor(Bytes.CARRIAGE_RETURN);
/**
* Aborts on a non-{@code CR ('\r')}.
*/
ByteProcessor FIND_NON_CR = new ByteProcessor.IndexNotOfProcessor(Bytes.CARRIAGE_RETURN);
/**
* Aborts on a {@code LF ('\n')}.
*/
ByteProcessor FIND_LF = new ByteProcessor.IndexOfProcessor(Bytes.LINE_FEED);
/**
* Aborts on a non-{@code LF ('\n')}.
*/
ByteProcessor FIND_NON_LF = new ByteProcessor.IndexNotOfProcessor(Bytes.LINE_FEED);
/**
* Aborts on a semicolon {@code (';')}.
*/
ByteProcessor FIND_SEMI_COLON = new ByteProcessor.IndexOfProcessor((byte) ';');
/**
* Aborts on a comma {@code (',')}.
*/
ByteProcessor FIND_COMMA = new ByteProcessor.IndexOfProcessor((byte) ',');
/**
* Aborts on a ascii space character ({@code ' '}).
*/
ByteProcessor FIND_ASCII_SPACE = new ByteProcessor.IndexOfProcessor(Bytes.SPACE);
/**
* Aborts on a {@code CR ('\r')} or a {@code LF ('\n')}.
*/
ByteProcessor FIND_CRLF = new ByteProcessor() {
@Override
public boolean process(byte value) {
return value != Bytes.CARRIAGE_RETURN && value != Bytes.LINE_FEED;
}
};
/**
* Aborts on a byte which is neither a {@code CR ('\r')} nor a {@code LF ('\n')}.
*/
ByteProcessor FIND_NON_CRLF = new ByteProcessor() {
@Override
public boolean process(byte value) {
return value == Bytes.CARRIAGE_RETURN || value == Bytes.LINE_FEED;
}
};
/**
* Aborts on a linear whitespace (a ({@code ' '} or a {@code '\t'}).
*/
ByteProcessor FIND_LINEAR_WHITESPACE = new ByteProcessor() {
@Override
public boolean process(byte value) {
return value != Bytes.SPACE && value != Bytes.TAB;
}
};
/**
* Aborts on a byte which is not a linear whitespace (neither {@code ' '} nor {@code '\t'}).
*/
ByteProcessor FIND_NON_LINEAR_WHITESPACE = new ByteProcessor() {
@Override
public boolean process(byte value) {
return value == Bytes.SPACE || value == Bytes.TAB;
}
};
/**
* @return {@code true} if the processor wants to continue the loop and handle the next byte in the buffer.
* {@code false} if the processor wants to stop handling bytes and abort the loop.
*/
boolean process(byte value) throws Exception;
}