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* version 2 for more details ( a copy is included in the LICENSE file that
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* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
/*
* @ test
* @ bug 6831794 6229811
* @ summary Test EUC_TW charset
* @ modules java . base / sun . nio . cs
*/
import java.nio.charset.*;
import java.nio.*;
import java.util.*;
public class TestEUC_TW {
static class Time {
long t;
}
static int iteration = 100 ;
static char [] decode(byte [] bb, Charset cs, boolean testDirect, Time t)
throws Exception {
String csn = cs.name();
CharsetDecoder dec = cs.newDecoder();
ByteBuffer bbf;
CharBuffer cbf;
if (testDirect) {
bbf = ByteBuffer.allocateDirect(bb.length);
cbf = ByteBuffer.allocateDirect(bb.length*2 ).asCharBuffer();
bbf.put(bb);
} else {
bbf = ByteBuffer.wrap(bb);
cbf = CharBuffer.allocate(bb.length);
}
CoderResult cr = null ;
long t1 = System.nanoTime()/1000 ;
for (int i = 0 ; i < iteration; i++) {
bbf.rewind();
cbf.clear();
dec.reset();
cr = dec.decode(bbf, cbf, true );
}
long t2 = System.nanoTime()/1000 ;
if (t != null )
t.t = (t2 - t1)/iteration;
if (cr != CoderResult.UNDERFLOW) {
System.out.println("DEC-----------------" );
int pos = bbf.position();
System.out.printf(" cr=%s, bbf.pos=%d, bb[pos]=%x,%x,%x,%x%n" ,
cr.toString(), pos,
bb[pos++]&0 xff, bb[pos++]&0 xff,bb[pos++]&0 xff, bb[pos++]&0 xff);
throw new RuntimeException("Decoding err: " + csn);
}
char [] cc = new char [cbf.position()];
cbf.flip(); cbf.get(cc);
return cc;
}
static CoderResult decodeCR(byte [] bb, Charset cs, boolean testDirect)
throws Exception {
CharsetDecoder dec = cs.newDecoder();
ByteBuffer bbf;
CharBuffer cbf;
if (testDirect) {
bbf = ByteBuffer.allocateDirect(bb.length);
cbf = ByteBuffer.allocateDirect(bb.length*2 ).asCharBuffer();
bbf.put(bb).flip();
} else {
bbf = ByteBuffer.wrap(bb);
cbf = CharBuffer.allocate(bb.length);
}
return dec.decode(bbf, cbf, true );
}
static byte [] encode(char [] cc, Charset cs, boolean testDirect, Time t)
throws Exception {
ByteBuffer bbf;
CharBuffer cbf;
CharsetEncoder enc = cs.newEncoder();
String csn = cs.name();
if (testDirect) {
bbf = ByteBuffer.allocateDirect(cc.length * 4 );
cbf = ByteBuffer.allocateDirect(cc.length * 2 ).asCharBuffer();
cbf.put(cc).flip();
} else {
bbf = ByteBuffer.allocate(cc.length * 4 );
cbf = CharBuffer.wrap(cc);
}
CoderResult cr = null ;
long t1 = System.nanoTime()/1000 ;
for (int i = 0 ; i < iteration; i++) {
cbf.rewind();
bbf.clear();
enc.reset();
cr = enc.encode(cbf, bbf, true );
}
long t2 = System.nanoTime()/1000 ;
if (t != null )
t.t = (t2 - t1)/iteration;
if (cr != CoderResult.UNDERFLOW) {
System.out.println("ENC-----------------" );
int pos = cbf.position();
System.out.printf(" cr=%s, cbf.pos=%d, cc[pos]=%x%n" ,
cr.toString(), pos, cc[pos]&0 xffff);
throw new RuntimeException("Encoding err: " + csn);
}
byte [] bb = new byte [bbf.position()];
bbf.flip(); bbf.get(bb);
return bb;
}
static CoderResult encodeCR(char [] cc, Charset cs, boolean testDirect)
throws Exception {
ByteBuffer bbf;
CharBuffer cbf;
CharsetEncoder enc = cs.newEncoder();
if (testDirect) {
bbf = ByteBuffer.allocateDirect(cc.length * 4 );
cbf = ByteBuffer.allocateDirect(cc.length * 2 ).asCharBuffer();
cbf.put(cc).flip();
} else {
bbf = ByteBuffer.allocate(cc.length * 4 );
cbf = CharBuffer.wrap(cc);
}
return enc.encode(cbf, bbf, true );
}
static char [] getEUC_TWChars(boolean skipNR) {
//CharsetEncoder encOLD = Charset.forName("EUC_TW_OLD").newEncoder();
CharsetEncoder encOLD = new EUC_TW_OLD().newEncoder();
CharsetEncoder enc = Charset.forName("EUC_TW" ).newEncoder();
char [] cc = new char [0 x20000];
char [] c2 = new char [2 ];
int pos = 0 ;
int i = 0 ;
//bmp
for (i = 0 ; i < 0 x10000; i++) {
//SKIP these 3 NR codepoints if compared to EUC_TW
if (skipNR && (i == 0 x4ea0 || i == 0 x51ab || i == 0 x52f9))
continue ;
if (encOLD.canEncode((char )i) != enc.canEncode((char )i)) {
System.out.printf(" Err i=%x: old=%b new=%b%n" , i,
encOLD.canEncode((char )i),
enc.canEncode((char )i));
throw new RuntimeException("canEncode() err!" );
}
if (enc.canEncode((char )i)) {
cc[pos++] = (char )i;
}
}
//supp
CharBuffer cb = CharBuffer.wrap(new char [2 ]);
for (i = 0 x20000; i < 0 x30000; i++) {
Character.toChars(i, c2, 0 );
cb.clear();cb.put(c2[0 ]);cb.put(c2[1 ]);cb.flip();
if (encOLD.canEncode(cb) != enc.canEncode(cb)) {
throw new RuntimeException("canEncode() err!" );
}
if (enc.canEncode(cb)) {
//System.out.printf("cp=%x, (%x, %x) %n", i, c2[0] & 0xffff, c2[1] & 0xffff);
cc[pos++] = c2[0 ];
cc[pos++] = c2[1 ];
}
}
return Arrays.copyOf(cc, pos);
}
static void checkRoundtrip(Charset cs) throws Exception {
char [] cc = getEUC_TWChars(false );
System.out.printf("Check roundtrip <%s>..." , cs.name());
byte [] bb = encode(cc, cs, false , null );
char [] ccO = decode(bb, cs, false , null );
if (!Arrays.equals(cc, ccO)) {
System.out.printf(" non-direct failed" );
}
bb = encode(cc, cs, true , null );
ccO = decode(bb, cs, true , null );
if (!Arrays.equals(cc, ccO)) {
System.out.printf(" (direct) failed" );
}
System.out.println();
}
static void checkInit(String csn) throws Exception {
System.out.printf("Check init <%s>...%n" , csn);
Charset.forName("Big5" ); // load in the ExtendedCharsets
long t1 = System.nanoTime()/1000 ;
Charset cs = Charset.forName(csn);
long t2 = System.nanoTime()/1000 ;
System.out.printf(" charset :%d%n" , t2 - t1);
t1 = System.nanoTime()/1000 ;
cs.newDecoder();
t2 = System.nanoTime()/1000 ;
System.out.printf(" new Decoder :%d%n" , t2 - t1);
t1 = System.nanoTime()/1000 ;
cs.newEncoder();
t2 = System.nanoTime()/1000 ;
System.out.printf(" new Encoder :%d%n" , t2 - t1);
}
static void compare(Charset cs1, Charset cs2) throws Exception {
char [] cc = getEUC_TWChars(true );
String csn1 = cs1.name();
String csn2 = cs2.name();
System.out.printf("Diff <%s> <%s>...%n" , csn1, csn2);
Time t1 = new Time();
Time t2 = new Time();
byte [] bb1 = encode(cc, cs1, false , t1);
byte [] bb2 = encode(cc, cs2, false , t2);
System.out.printf(" Encoding TimeRatio %s/%s: %d,%d :%f%n" ,
csn2, csn1,
t2.t, t1.t,
(double )(t2.t)/(t1.t));
if (!Arrays.equals(bb1, bb2)) {
System.out.printf(" encoding failed%n" );
}
char [] cc2 = decode(bb1, cs2, false , t2);
char [] cc1 = decode(bb1, cs1, false , t1);
System.out.printf(" Decoding TimeRatio %s/%s: %d,%d :%f%n" ,
csn2, csn1,
t2.t, t1.t,
(double )(t2.t)/(t1.t));
if (!Arrays.equals(cc1, cc2)) {
System.out.printf(" decoding failed%n" );
}
bb1 = encode(cc, cs1, true , t1);
bb2 = encode(cc, cs2, true , t2);
System.out.printf(" Encoding(dir) TimeRatio %s/%s: %d,%d :%f%n" ,
csn2, csn1,
t2.t, t1.t,
(double )(t2.t)/(t1.t));
if (!Arrays.equals(bb1, bb2))
System.out.printf(" encoding (direct) failed%n" );
cc1 = decode(bb1, cs1, true , t1);
cc2 = decode(bb1, cs2, true , t2);
System.out.printf(" Decoding(dir) TimeRatio %s/%s: %d,%d :%f%n" ,
csn2, csn1,
t2.t, t1.t,
(double )(t2.t)/(t1.t));
if (!Arrays.equals(cc1, cc2)) {
System.out.printf(" decoding (direct) failed%n" );
}
}
// The first byte is the length of malformed bytes
static byte [][] malformed = {
//{5, (byte)0xF8, (byte)0x80, (byte)0x80, (byte)0x9F, (byte)0x80, (byte)0xC0 },
};
static void checkMalformed(Charset cs) throws Exception {
boolean failed = false ;
String csn = cs.name();
System.out.printf("Check malformed <%s>...%n" , csn);
for (boolean direct: new boolean [] {false , true }) {
for (byte [] bins : malformed) {
int mlen = bins[0 ];
byte [] bin = Arrays.copyOfRange(bins, 1 , bins.length);
CoderResult cr = decodeCR(bin, cs, direct);
String ashex = "" ;
for (int i = 0 ; i < bin.length; i++) {
if (i > 0 ) ashex += " " ;
ashex += Integer.toBinaryString((int )bin[i] & 0 xff);
}
if (!cr.isMalformed()) {
System.out.printf(" FAIL(direct=%b): [%s] not malformed.\n" , direct, ashex);
failed = true ;
} else if (cr.length() != mlen) {
System.out.printf(" FAIL(direct=%b): [%s] malformed[len=%d].\n" , direct, ashex, cr.length());
failed = true ;
}
}
}
if (failed)
throw new RuntimeException("Check malformed failed " + csn);
}
static boolean check(CharsetDecoder dec, byte [] bytes, boolean direct, int [] flow) {
int inPos = flow[0 ];
int inLen = flow[1 ];
int outPos = flow[2 ];
int outLen = flow[3 ];
int expedInPos = flow[4 ];
int expedOutPos = flow[5 ];
CoderResult expedCR = (flow[6 ]==0 )?CoderResult.UNDERFLOW
:CoderResult.OVERFLOW;
ByteBuffer bbf;
CharBuffer cbf;
if (direct) {
bbf = ByteBuffer.allocateDirect(inPos + bytes.length);
cbf = ByteBuffer.allocateDirect((outPos + outLen)*2 ).asCharBuffer();
} else {
bbf = ByteBuffer.allocate(inPos + bytes.length);
cbf = CharBuffer.allocate(outPos + outLen);
}
bbf.position(inPos);
bbf.put(bytes).flip().position(inPos).limit(inPos + inLen);
cbf.position(outPos);
dec.reset();
CoderResult cr = dec.decode(bbf, cbf, false );
if (cr != expedCR ||
bbf.position() != expedInPos ||
cbf.position() != expedOutPos) {
System.out.printf("Expected(direct=%5b): [" , direct);
for (int i:flow) System.out.print(" " + i);
System.out.println("] CR=" + cr +
", inPos=" + bbf.position() +
", outPos=" + cbf.position());
return false ;
}
return true ;
}
static void checkUnderOverflow(Charset cs) throws Exception {
String csn = cs.name();
System.out.printf("Check under/overflow <%s>...%n" , csn);
CharsetDecoder dec = cs.newDecoder();
boolean failed = false ;
//7f, a1a1, 8ea2a1a1, 8ea3a1a1, 8ea7a1a1
//0 1 2 3 7 11
byte [] bytes = new String("\u007f\u3000\u4e42\u4e28\ud840\udc55" ).getBytes("EUC_TW" );
int inlen = bytes.length;
int MAXOFF = 20 ;
for (int inoff = 0 ; inoff < MAXOFF; inoff++) {
for (int outoff = 0 ; outoff < MAXOFF; outoff++) {
int [][] Flows = {
//inpos, inLen, outPos, outLen, inPosEP, outposEP, under(0)/over(1)
//overflow
{inoff, inlen, outoff, 1 , inoff + 1 , outoff + 1 , 1 },
{inoff, inlen, outoff, 2 , inoff + 3 , outoff + 2 , 1 },
{inoff, inlen, outoff, 3 , inoff + 7 , outoff + 3 , 1 },
{inoff, inlen, outoff, 4 , inoff + 11 , outoff + 4 , 1 },
{inoff, inlen, outoff, 5 , inoff + 11 , outoff + 4 , 1 },
{inoff, inlen, outoff, 6 , inoff + 15 , outoff + 6 , 0 },
//underflow
{inoff, 1 , outoff, 6 , inoff + 1 , outoff + 1 , 0 },
{inoff, 2 , outoff, 6 , inoff + 1 , outoff + 1 , 0 },
{inoff, 3 , outoff, 6 , inoff + 3 , outoff + 2 , 0 },
{inoff, 4 , outoff, 6 , inoff + 3 , outoff + 2 , 0 },
{inoff, 5 , outoff, 6 , inoff + 3 , outoff + 2 , 0 },
{inoff, 8 , outoff, 6 , inoff + 7 , outoff + 3 , 0 },
{inoff, 9 , outoff, 6 , inoff + 7 , outoff + 3 , 0 },
{inoff, 10 , outoff, 6 , inoff + 7 , outoff + 3 , 0 },
{inoff, 11 , outoff, 6 , inoff +11 , outoff + 4 , 0 },
{inoff, 12 , outoff, 6 , inoff +11 , outoff + 4 , 0 },
{inoff, 15 , outoff, 6 , inoff +15 , outoff + 6 , 0 },
// 2-byte under/overflow
{inoff, 2 , outoff, 1 , inoff + 1 , outoff + 1 , 0 },
{inoff, 3 , outoff, 1 , inoff + 1 , outoff + 1 , 1 },
{inoff, 3 , outoff, 2 , inoff + 3 , outoff + 2 , 0 },
// 4-byte under/overflow
{inoff, 4 , outoff, 2 , inoff + 3 , outoff + 2 , 0 },
{inoff, 5 , outoff, 2 , inoff + 3 , outoff + 2 , 0 },
{inoff, 6 , outoff, 2 , inoff + 3 , outoff + 2 , 0 },
{inoff, 7 , outoff, 2 , inoff + 3 , outoff + 2 , 1 },
{inoff, 7 , outoff, 3 , inoff + 7 , outoff + 3 , 0 },
// 4-byte under/overflow
{inoff, 8 , outoff, 3 , inoff + 7 , outoff + 3 , 0 },
{inoff, 9 , outoff, 3 , inoff + 7 , outoff + 3 , 0 },
{inoff, 10 , outoff, 3 , inoff + 7 , outoff + 3 , 0 },
{inoff, 11 , outoff, 3 , inoff + 7 , outoff + 3 , 1 },
{inoff, 11 , outoff, 4 , inoff +11 , outoff + 4 , 0 },
// 4-byte/supp under/overflow
{inoff, 11 , outoff, 4 , inoff +11 , outoff + 4 , 0 },
{inoff, 12 , outoff, 4 , inoff +11 , outoff + 4 , 0 },
{inoff, 13 , outoff, 4 , inoff +11 , outoff + 4 , 0 },
{inoff, 14 , outoff, 4 , inoff +11 , outoff + 4 , 0 },
{inoff, 15 , outoff, 4 , inoff +11 , outoff + 4 , 1 },
{inoff, 15 , outoff, 5 , inoff +11 , outoff + 4 , 1 },
{inoff, 15 , outoff, 6 , inoff +15 , outoff + 6 , 0 },
};
for (boolean direct: new boolean [] {false , true }) {
for (int [] flow: Flows) {
if (!check(dec, bytes, direct, flow))
failed = true ;
}
}}}
if (failed)
throw new RuntimeException("Check under/overflow failed " + csn);
}
public static void main(String[] args) throws Exception {
// be the first one
//checkInit("EUC_TW_OLD");
checkInit("EUC_TW" );
Charset euctw = Charset.forName("EUC_TW" );
checkRoundtrip(euctw);
compare(euctw, new EUC_TW_OLD());
checkMalformed(euctw);
checkUnderOverflow(euctw);
}
}
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