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2115N/A

2115N/Aimport java.io.*;

2115N/Aimport java.nio.*;

2115N/Aimport java.nio.channels.*;

2115N/Aimport java.nio.charset.*;

2115N/Aimport java.util.*;

2115N/Aimport java.util.regex.*;

2115N/A

2115N/A

2115N/Apublic class Check {

2115N/A

2115N/A private static PrintStream log = System.err;

2115N/A

2115N/A private static final int UNICODE_SIZE = (1 << 16);

2115N/A

2115N/A private final String csName;

2115N/A private final String refName;

2115N/A private byte[][] bytes = new byte[UNICODE_SIZE][]; // Indexed by char

2115N/A

2115N/A private int errors = 0;

2115N/A

2115N/A private Check(String csn, String refn) {

2115N/A csName = csn;

2115N/A refName = refn;

2115N/A }

2115N/A

2115N/A private Check load()

2115N/A throws IOException

2115N/A {

2115N/A File fn = new File(System.getProperty("test.src", "."), refName);

2115N/A FileChannel fc = new FileInputStream(fn).getChannel();

2115N/A ByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());

2115N/A CharBuffer cb = Charset.forName("US-ASCII").decode(bb);

2115N/A Pattern p = Pattern.compile("^(\\p{XDigit}+) +(\\p{XDigit}+)$",

2115N/A Pattern.MULTILINE);

2115N/A Matcher m = p.matcher(cb);

2115N/A while (m.find()) {

2115N/A char c = (char)Integer.parseInt(m.group(1), 16);

2115N/A String v = m.group(2);

2115N/A int nb = v.length() >> 1;

2115N/A byte[] ba = new byte[nb];

2115N/A for (int i = 0; i < nb; i++) {

2115N/A ba[i] = (byte)Integer.parseInt(v.substring(i << 1, (i << 1) + 2),

2115N/A 16);

2115N/A }

2115N/A bytes[c] = ba;

2115N/A }

2115N/A return this;

2115N/A }

2115N/A

2115N/A private void error() {

2115N/A if (++errors >= 100)

2115N/A throw new RuntimeException("100 errors occurred (there might be more)");

2115N/A }

2115N/A

2115N/A private void mismatch(String s, byte[] expected, byte[] got) {

2115N/A log.println("Encoding mismatch on \""

2115N/A + Util.toString(s)

2115N/A + "\": Expected {"

2115N/A + Util.toString(expected)

2115N/A + "}, got {"

2115N/A + Util.toString(got)

2115N/A + "}");

2115N/A error();

2115N/A }

2115N/A

2115N/A private void mismatch(int i, byte[] ba, String expected, String got) {

2115N/A log.println("Decoding mismatch on \""

2115N/A + Util.toString((char)i)

2115N/A + "\", input {"

2115N/A + Util.toString(ba)

2115N/A + "}: Expected \""

2115N/A + Util.toString(expected)

2115N/A + "\", got \""

2115N/A + Util.toString(got)

2115N/A + "\"");

2115N/A error();

2115N/A }

2115N/A

2115N/A private void check()

2115N/A throws IOException

2115N/A {

2115N/A

2115N/A // String.getBytes(String csn)

2115N/A for (int i = 0; i < UNICODE_SIZE; i++) {

2115N/A if (bytes[i] == null)

2115N/A continue;

2115N/A String s = new String(new char[]{ (char)i });

2115N/A byte[] ba = s.getBytes(csName);

2115N/A if (Util.cmp(ba, bytes[i]) >= 0)

2115N/A mismatch(s, bytes[i], ba);

2115N/A }

2115N/A log.println("String.getBytes(\"" + csName + "\") okay");

2115N/A

2115N/A // String(byte[] ba, String csn)

2115N/A for (int i = 0; i < UNICODE_SIZE; i++) {

2115N/A if (bytes[i] == null)

2115N/A continue;

2115N/A String r = new String(new char[]{ (char)i });

2115N/A String s = new String(bytes[i], csName);

2115N/A if (!r.equals(s))

2115N/A mismatch(i, bytes[i], r, s);

2115N/A }

2115N/A log.println("String(byte[] ba, \"" + csName + "\") okay");

2115N/A

2115N/A // To be really thorough we should test OutputStreamWriter,

2115N/A // InputStreamReader, and Charset{De,En}Coder here also,

2115N/A // but the above will do for now.

2115N/A

2115N/A if (errors > 0) {

2115N/A throw new RuntimeException(errors + " error(s) occurred");

2115N/A }

2115N/A

2115N/A }

2115N/A

2115N/A // Usage: Check charsetName referenceFileName

2115N/A public static void main(String[] args) throws Exception {

2115N/A new Check(args[0], args[1]).load().check();

2115N/A }

2115N/A

2115N/A}