Java example source code file (TestIBMDB.java)
The TestIBMDB.java Java example source code
/*
* Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.
* 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.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6843578
* @summary Test old and new implementation of db charsets
* @build IBM930_OLD IBM933_OLD IBM935_OLD IBM937_OLD IBM939_OLD IBM942_OLD IBM943_OLD IBM948_OLD IBM949_OLD IBM950_OLD IBM970_OLD IBM942C_OLD IBM943C_OLD IBM949C_OLD IBM1381_OLD IBM1383_OLD EUC_CN_OLD EUC_KR_OLD GBK_OLD Johab_OLD MS932_OLD MS936_OLD MS949_OLD MS950_OLD SJIS_OLD PCK_OLD EUC_JP_OLD EUC_JP_LINUX_OLD EUC_JP_Open_OLD
* @run main TestIBMDB
*/
import java.nio.charset.*;
import java.nio.*;
import java.util.*;
public class TestIBMDB {
static class Time {
long t;
}
static int iteration = 200;
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;
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++]&0xff, bb[pos++]&0xff,bb[pos++]&0xff, bb[pos++]&0xff);
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);
}
CoderResult cr = null;
for (int i = 0; i < iteration; i++) {
bbf.rewind();
cbf.clear();
dec.reset();
cr = dec.decode(bbf, cbf, true);
}
return cr;
}
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;
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]&0xffff);
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);
}
CoderResult cr = null;
for (int i = 0; i < iteration; i++) {
cbf.rewind();
bbf.clear();
enc.reset();
cr = enc.encode(cbf, bbf, true);
}
return cr;
}
static void printEntry(char c, Charset cs) {
byte[] bb = new String(new char[] {c}).getBytes(cs);
for (byte b:bb)
System.out.printf("%x", b&0xff);
System.out.printf(" %x", c & 0xffff);
String s2 = new String(bb, cs);
System.out.printf(" %x%n", s2.charAt(0) & 0xffff);
}
// check and compare canEncoding/Encoding
static char[] checkEncoding(Charset oldCS, Charset newCS)
throws Exception {
System.out.printf("Encoding <%s> <%s>...%n", oldCS.name(), newCS.name());
CharsetEncoder encOLD = oldCS.newEncoder();
CharsetEncoder encNew = newCS.newEncoder();
char[] cc = new char[0x10000];
int pos = 0;
boolean is970 = "x-IBM970-Old".equals(oldCS.name());
for (char c = 0; c < 0xffff; c++) {
boolean canOld = encOLD.canEncode(c);
boolean canNew = encNew.canEncode(c);
if (is970 && c == 0x2299)
continue;
if (canOld != canNew) {
if (canNew) {
System.out.printf(" NEW(only): ");
printEntry(c, newCS);
} else {
if (is970) {
byte[] bb = new String(new char[] {c}).getBytes(oldCS);
if (bb.length == 2 && bb[0] == (byte)0xa2 && bb[1] == (byte)0xc1) {
// we know 970 has bogus nnnn -> a2c1 -> 2299
continue;
}
}
System.out.printf(" OLD(only): ");
printEntry(c, oldCS);
}
} else if (canNew) {
byte[] bbNew = new String(new char[] {c}).getBytes(newCS);
byte[] bbOld = new String(new char[] {c}).getBytes(oldCS);
if (!Arrays.equals(bbNew, bbOld)) {
System.out.printf(" c->b NEW: ");
printEntry(c, newCS);
System.out.printf(" c->b OLD: ");
printEntry(c, oldCS);
} else {
String sNew = new String(bbNew, newCS);
String sOld = new String(bbOld, oldCS);
if (!sNew.equals(sOld)) {
System.out.printf(" b2c NEW (c=%x):", c&0xffff);
printEntry(sNew.charAt(0), newCS);
System.out.printf(" b2c OLD:");
printEntry(sOld.charAt(0), oldCS);
}
}
}
if (canNew & canOld) { // added only both for now
cc[pos++] = c;
}
}
return Arrays.copyOf(cc, pos);
}
// check and compare canEncoding/Encoding
static void checkDecoding(Charset oldCS, Charset newCS)
throws Exception
{
System.out.printf("Decoding <%s> <%s>...%n", oldCS.name(), newCS.name());
boolean isEBCDIC = oldCS.name().startsWith("x-IBM93");
//Try singlebyte first
byte[] bb = new byte[1];
System.out.printf(" trying SB...%n");
for (int b = 0; b < 0x100; b++) {
bb[0] = (byte)b;
String sOld = new String(bb, oldCS);
String sNew = new String(bb, newCS);
if (!sOld.equals(sNew)) {
System.out.printf(" b=%x: %x/%d(old) %x/%d(new)%n",
b& 0xff,
sOld.charAt(0) & 0xffff, sOld.length(),
sNew.charAt(0) & 0xffff, sNew.length());
}
}
System.out.printf(" trying DB...%n");
bb = new byte[isEBCDIC?4:2];
int b1Min = 0x40;
int b1Max = 0xfe;
for (int b1 = 0x40; b1 < 0xff; b1++) {
if (!isEBCDIC) {
// decodable singlebyte b1
bb[0] = (byte)b1;
String sOld = new String(bb, oldCS);
String sNew = new String(bb, newCS);
if (!sOld.equals(sNew)) {
if (sOld.length() != 2 && sOld.charAt(0) != 0) {
// only prints we are NOT expected. above two are known issue
System.out.printf(" b1=%x: %x/%d(old) %x/%d(new)%n",
b1 & 0xff,
sOld.charAt(0) & 0xffff, sOld.length(),
sNew.charAt(0) & 0xffff, sNew.length());
continue;
}
}
}
for (int b2 = 0x40; b2 < 0xff; b2++) {
if (isEBCDIC) {
bb[0] = 0x0e;
bb[1] = (byte)b1;
bb[2] = (byte)b2;
bb[3] = 0x0f;
} else {
bb[0] = (byte)b1;
bb[1] = (byte)b2;
}
String sOld = new String(bb, oldCS);
String sNew = new String(bb, newCS);
//if (!sOld.equals(sNew)) {
if (sOld.charAt(0) != sNew.charAt(0)) {
if (sOld.charAt(0) == 0 && sNew.charAt(0) == 0xfffd)
continue; // known issude in old implementation
System.out.printf(" bb=<%x,%x> c(old)=%x, c(new)=%x%n",
b1, b2, sOld.charAt(0) & 0xffff, sNew.charAt(0) & 0xffff);
}
}
}
}
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, char[] cc) throws Exception {
System.gc(); // enqueue finalizable objects
Thread.sleep(1000);
System.gc(); // enqueue finalizable objects
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
byte[][] malformed = {
{5, (byte)0xF8, (byte)0x80, (byte)0x80, (byte)0x9F, (byte)0x80, (byte)0xC0 },
};
*/
static void checkMalformed(Charset cs, byte[][] malformed)
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.toString((int)bin[i] & 0xff, 16);
}
if (!cr.isMalformed()) {
System.out.printf(" FAIL(direct=%b): [%s] not malformed. -->cr=%s\n", direct, ashex, cr.toString());
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},
};
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);
}
static String[] csnames = new String[] {
"IBM930",
"IBM933",
"IBM935",
"IBM937",
"IBM939",
"IBM942",
"IBM943",
"IBM948",
"IBM949",
"IBM950",
"IBM970",
"IBM942C",
"IBM943C",
"IBM949C",
"IBM1381",
"IBM1383",
"EUC_CN",
"EUC_KR",
"GBK",
"Johab",
"MS932",
"MS936",
"MS949",
"MS950",
"EUC_JP",
"EUC_JP_LINUX",
"EUC_JP_Open",
"SJIS",
"PCK",
};
public static void main(String[] args) throws Exception {
for (String csname: csnames) {
System.out.printf("-----------------------------------%n");
String oldname = csname + "_OLD";
if ("EUC_JP_Open".equals(csname))
csname = "eucjp-open";
checkInit(csname);
Charset csOld = (Charset)Class.forName(oldname).newInstance();
Charset csNew = Charset.forName(csname);
char[] cc = checkEncoding(csOld, csNew);
checkDecoding(csOld, csNew);
compare(csNew, csOld, cc);
if (csname.startsWith("x-IBM93")) {
//ecdbic
checkMalformed(csNew, new byte[][] {
{1, 0x26, 0x0f, 0x27}, // in SBSC, no SI
{1, 0x0e, 0x41, 0x41, 0xe}, // in DBSC, no SO
{2, 0x0e, 0x40, 0x41, 0xe}, // illegal DB
});
} else if (csname.equals("x-IBM970") ||
csname.equals("x-IBM1383")) {
//euc_simple
checkMalformed(csNew, new byte[][] {
{1, 0x26, (byte)0x8f, 0x27}, // SS2
{1, (byte)0xa1, (byte)0xa1, (byte)0x8e, 0x51}, // SS3
});
}
}
}
}
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