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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
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* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
/* @test
* @ bug 4712786 8229960
* @ summary Check charsets against reference files
* @ modules jdk . charsets
*
* @ build Util
* @ run main Check shift_jis ref . shift_jis
*/
import java.io.*;
import java.nio.*;
import java.nio.channels.*;
import java.nio.charset.*;
import java.util.*;
import java.util.regex.*;
public class Check {
private static PrintStream log = System.err;
private static final int UNICODE_SIZE = (1 << 16 );
private final String csName;
private final String refName;
private byte [][] bytes = new byte [UNICODE_SIZE][]; // Indexed by char
private int errors = 0 ;
private Check(String csn, String refn) {
csName = csn;
refName = refn;
}
private Check load()
throws IOException
{
File fn = new File(System.getProperty("test.src" , "." ), refName);
FileChannel fc = new FileInputStream(fn).getChannel();
ByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0 , fc.size());
CharBuffer cb = Charset.forName("US-ASCII" ).decode(bb);
Pattern p = Pattern.compile("^(\\p{XDigit}+) +(\\p{XDigit}+)$" ,
Pattern.MULTILINE);
Matcher m = p.matcher(cb);
while (m.find()) {
char c = (char )Integer.parseInt(m.group(1 ), 16 );
String v = m.group(2 );
int nb = v.length() >> 1 ;
byte [] ba = new byte [nb];
for (int i = 0 ; i < nb; i++) {
ba[i] = (byte )Integer.parseInt(v.substring(i << 1 , (i << 1 ) + 2 ),
16 );
}
bytes[c] = ba;
}
return this ;
}
private void error() {
if (++errors >= 100 )
throw new RuntimeException("100 errors occurred (there might be more)" );
}
private void mismatch(String s, byte [] expected, byte [] got) {
log.println("Encoding mismatch on \" "
+ Util.toString(s)
+ "\" : Expected {"
+ Util.toString(expected)
+ "}, got {"
+ Util.toString(got)
+ "}" );
error();
}
private void mismatch(int i, byte [] ba, String expected, String got) {
log.println("Decoding mismatch on \" "
+ Util.toString((char )i)
+ "\" , input {"
+ Util.toString(ba)
+ "}: Expected \" "
+ Util.toString(expected)
+ "\" , got \""
+ Util.toString(got)
+ "\" ");
error();
}
private void check()
throws IOException
{
// String.getBytes(String csn)
for (int i = 0 ; i < UNICODE_SIZE; i++) {
if (bytes[i] == null )
continue ;
String s = new String(new char []{ (char )i });
byte [] ba = s.getBytes(csName);
if (Util.cmp(ba, bytes[i]) >= 0 )
mismatch(s, bytes[i], ba);
}
log.println("String.getBytes(\" " + csName + " \") okay" );
// String(byte[] ba, String csn)
for (int i = 0 ; i < UNICODE_SIZE; i++) {
if (bytes[i] == null )
continue ;
String r = new String(new char []{ (char )i });
String s = new String(bytes[i], csName);
if (!r.equals(s))
mismatch(i, bytes[i], r, s);
}
log.println("String(byte[] ba, \" " + csName + " \") okay" );
// To be really thorough we should test OutputStreamWriter,
// InputStreamReader, and Charset{De,En}Coder here also,
// but the above will do for now.
if (errors > 0 ) {
throw new RuntimeException(errors + " error(s) occurred" );
}
}
// Usage: Check charsetName referenceFileName
public static void main(String[] args) throws Exception {
new Check(args[0 ], args[1 ]).load().check();
}
}
Messung V0.5 in Prozent C=95 H=85 G=90
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-10-11)
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