ZipStreamTestpublic class ZipStreamTest extends TestCase | Basic tests for ZipStream |
| Methods Summary |
|---|
| private static void | createCompressedZip(java.io.ByteArrayOutputStream bytesOut)
ZipOutputStream out = new ZipOutputStream(bytesOut);
try {
int i;
for (i = 0; i < 3; i++) {
byte[] input = makeSampleFile(i);
ZipEntry newEntry = new ZipEntry("file-" + i);
if (i != 1)
newEntry.setComment("this is file " + i);
out.putNextEntry(newEntry);
out.write(input, 0, input.length);
out.closeEntry();
}
out.setComment("This is a lovely compressed archive!");
} finally {
out.close();
}
| | private static void | createUncompressedZip(java.io.ByteArrayOutputStream bytesOut)
ZipOutputStream out = new ZipOutputStream(bytesOut);
try {
long[] crcs = {0x205fbff3, 0x906fae57L, 0x2c235131};
int i;
for (i = 0; i < 3; i++) {
byte[] input = makeSampleFile(i);
ZipEntry newEntry = new ZipEntry("file-" + i);
if (i != 1)
newEntry.setComment("this is file " + i);
newEntry.setMethod(ZipEntry.STORED);
newEntry.setSize(128 * 1024);
newEntry.setCrc(crcs[i]);
out.putNextEntry(newEntry);
out.write(input, 0, input.length);
out.closeEntry();
}
out.setComment("This is a lovely, but uncompressed, archive!");
} finally {
out.close();
}
| | private static byte[] | makeSampleFile(int stepStep)
byte[] sample = new byte[128 * 1024];
byte val, step;
int i, j, offset;
val = 0;
step = 1;
offset = 0;
for (i = 0; i < (128 * 1024) / 256; i++) {
for (j = 0; j < 256; j++) {
sample[offset++] = val;
val += step;
}
step += stepStep;
}
return sample;
| | private static void | scanZip(java.io.ByteArrayInputStream bytesIn)
ZipInputStream in = new ZipInputStream(bytesIn);
try {
int i;
for (i = 0; i < 3; i++) {
ZipEntry entry = in.getNextEntry();
ByteArrayOutputStream contents = new ByteArrayOutputStream();
byte[] buf = new byte[4096];
int len, totalLen = 0;
while ((len = in.read(buf)) > 0) {
contents.write(buf, 0, len);
totalLen += len;
}
assertEquals(128 * 1024, totalLen);
// System.out.println("ZipStreamTest: name='" + entry.getName()
// + "', zero=" + contents.toByteArray()[0]
// + ", tfs=" + contents.toByteArray()[257]
// + ", crc=" + Long.toHexString(entry.getCrc()));
}
assertNull("should only be three entries", in.getNextEntry());
} finally {
in.close();
}
| | public void | testZipStream()
ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
createCompressedZip(bytesOut);
byte[] zipData = bytesOut.toByteArray();
/*
FileOutputStream outFile = new FileOutputStream("/tmp/foo.zip");
outFile.write(zipData, 0, zipData.length);
outFile.close();
*/
/*
FileInputStream inFile = new FileInputStream("/tmp/foo.zip");
int inputLength = inFile.available();
zipData = new byte[inputLength];
if (inFile.read(zipData) != inputLength)
throw new RuntimeException();
inFile.close();
*/
ByteArrayInputStream bytesIn = new ByteArrayInputStream(zipData);
scanZip(bytesIn);
bytesOut = new ByteArrayOutputStream();
createUncompressedZip(bytesOut);
zipData = bytesOut.toByteArray();
bytesIn = new ByteArrayInputStream(zipData);
scanZip(bytesIn);
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