public Writer openSource( JPackage pkg, String fileName ) throws IOException {
final OutputStreamWriter bw = new OutputStreamWriter(openBinary(pkg,fileName));
// create writer
try {
return new UnicodeEscapeWriter(bw) {
// can't change this signature to Encoder because
// we can't have Encoder in method signature
private final CharsetEncoder encoder = EncoderFactory.createEncoder(bw.getEncoding());
protected boolean requireEscaping(int ch) {
// control characters
if( ch<0x20 && " \t\r\n".indexOf(ch)==-1 ) return true;
// check ASCII chars, for better performance
if( ch<0x80 ) return false;
return !encoder.canEncode((char)ch);
}
};
} catch( Throwable t ) {
return new UnicodeEscapeWriter(bw);
}
}