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* 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 ) .
*
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*/
/* @test
* @ bug 4770745 4828461
* @ summary open zip files with more than 64 k entries
* @ run main / timeout = 600 ManyEntries
* @ author Martin Buchholz
*/
import java.util.*;
import java.util.zip.*;
import java.io.*;
public class ManyEntries {
public static void main(String[] args) throws Exception {
boolean runMoreTests = args.length > 0 ;
int [] sizes = (runMoreTests ?
new int []{1 , 2 , 42 , 65534 , 65535 , 65536 , 65537 , 68000 } :
new int []{1 , 2 , 42 , 68000 });
int [] methods = {ZipEntry.STORED, ZipEntry.DEFLATED};
for (int size : sizes)
for (int method : methods)
test(size, method);
}
// JDK doesn't like having zip file contents changed at runtime
static int uniquifier = 42 ;
static void test(int N, int method) throws Exception {
System.out.println("N=" +N+", method=" +method);
long time = System.currentTimeMillis() / 2000 * 2000 ;
CRC32 crc32 = new CRC32();
File zipFile = new File(++uniquifier + ".zip" );
try {
zipFile.delete ();
try (FileOutputStream fos = new FileOutputStream(zipFile);
BufferedOutputStream bos = new BufferedOutputStream(fos);
ZipOutputStream zos = new ZipOutputStream(bos))
{
for (int i = 0 ; i < N; i++) {
ZipEntry e = new ZipEntry("DIR/" +i);
e.setMethod(method);
e.setTime(time);
if (method == ZipEntry.STORED) {
e.setSize(1 );
crc32.reset();
crc32.update((byte )i);
e.setCrc(crc32.getValue());
} else {
e.setSize(0 );
e.setCrc(0 );
}
zos.putNextEntry(e);
zos.write(i);
}
}
try (ZipFile zip = new ZipFile(zipFile)) {
if (! (zip.size() == N))
throw new Exception("Bad ZipFile size: " + zip.size());
Enumeration entries = zip.entries();
for (int i = 0 ; i < N; i++) {
if (i % 1000 == 0 ) {System.gc(); System.runFinalization();}
if (! (entries.hasMoreElements()))
throw new Exception("only " + i + " elements" );
ZipEntry e = (ZipEntry)entries.nextElement();
if (! (e.getSize() == 1 ))
throw new Exception("bad size: " + e.getSize());
if (! (e.getName().equals("DIR/" + i)))
throw new Exception("bad name: " + i);
if (! (e.getMethod() == method))
throw new Exception("getMethod=" +e.getMethod()+", method=" + method);
if (! (e.getTime() == time))
throw new Exception("getTime=" +e.getTime()+", time=" + time);
if (! (zip.getInputStream(e).read() == (i & 0 xff)))
throw new Exception("Bad file contents: " + i);
}
if (entries.hasMoreElements())
throw new Exception("too many elements" );
}
} finally {
zipFile.delete ();
}
}
}
Messung V0.5 in Prozent C=96 H=85 G=90
¤ Dauer der Verarbeitung: 0.5 Sekunden
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