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package com.jclark.xml.tok;
/**
* An Encoding for ISO 8859-1.
*
* @version $Revision: 1.3 $ $Date: 1998/08/28 10:07:26 $
*/
final class ISO8859_1Encoding extends Encoding {
private static final byte[] latin1Table;
static {
latin1Table = charTypeTable[0];
}
ISO8859_1Encoding() {
super(1);
}
int byteType(byte[] buf, int off) {
return latin1Table[buf[off] & 0xFF];
}
int byteToAscii(byte[] buf, int off) {
return (char)buf[off];
}
// c is a significant ASCII character
boolean charMatches(byte[] buf, int off, char c) {
return (char)buf[off] == c;
}
public int convert(byte[] sourceBuf, int sourceStart, int sourceEnd,
char[] targetBuf, int targetStart) {
int initTargetStart = targetStart;
int c;
while (sourceStart != sourceEnd)
targetBuf[targetStart++] = (char)(sourceBuf[sourceStart++] & 0xFF);
return targetStart - initTargetStart;
}
public int getFixedBytesPerChar() {
return 1;
}
public void movePosition(final byte[] buf, int off, int end, Position pos) {
/* Maintain the invariant: off - colStart == colNumber. */
int colStart = off - pos.columnNumber;
int lineNumber = pos.lineNumber;
while (off != end) {
byte b = buf[off++];
switch (b) {
case (byte)'\n':
lineNumber += 1;
colStart = off;
break;
case (byte)'\r':
lineNumber += 1;
if (off != end && buf[off] == '\n')
off++;
colStart = off;
break;
}
}
pos.columnNumber = off - colStart;
pos.lineNumber = lineNumber;
}
int extendData(final byte[] buf, int off, final int end) {
while (off != end && latin1Table[buf[off] & 0xFF] >= 0)
off++;
return off;
}
}
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