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Files to add Deflater and DeflaterOutputStream to java.util.zip for

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avian
This commit is contained in:
jent
2009-12-04 12:01:31 -07:00
parent 60333c88f5
commit 99a1c12682
5 changed files with 300 additions and 0 deletions
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66
classpath/java-util-zip.cpp
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@ -80,3 +80,69 @@ Java_java_util_zip_Inflater_inflate
e->SetIntArrayRegion(results, 0, 3, resultArray);
}
extern "C" JNIEXPORT jlong JNICALL
Java_java_util_zip_Deflater_make
(JNIEnv* e, jclass, jboolean nowrap, jint level)
{
z_stream* s = static_cast<z_stream*>(malloc(sizeof(z_stream)));
memset(s, 0, sizeof(z_stream));
int r = deflateInit2(s, level, (nowrap ? -15 : 15));
if (r != Z_OK) {
free(s);
throwNew(e, "java/lang/RuntimeException", zError(r));
return 0;
}
return reinterpret_cast<jlong>(s);
}
extern "C" JNIEXPORT void JNICALL
Java_java_util_zip_Deflater_dispose(JNIEnv*, jclass, jlong peer)
{
z_stream* s = reinterpret_cast<z_stream*>(peer);
deflateEnd(s);
free(s);
}
extern "C" JNIEXPORT void JNICALL
Java_java_util_zip_Deflater_deflate
(JNIEnv* e, jclass, jlong peer,
jbyteArray input, jint inputOffset, jint inputLength,
jbyteArray output, jint outputOffset, jint outputLength,
jintArray results)
{
z_stream* s = reinterpret_cast<z_stream*>(peer);
jbyte* in = static_cast<jbyte*>(malloc(inputLength));
if (in == 0) {
throwNew(e, "java/lang/OutOfMemoryError", 0);
return;
}
jbyte* out = static_cast<jbyte*>(malloc(outputLength));
if (out == 0) {
free(in);
throwNew(e, "java/lang/OutOfMemoryError", 0);
return;
}
e->GetByteArrayRegion(input, inputOffset, inputLength, in);
s->next_in = reinterpret_cast<Bytef*>(in);
s->avail_in = inputLength;
s->next_out = reinterpret_cast<Bytef*>(out);
s->avail_out = outputLength;
int r = deflate(s, Z_SYNC_FLUSH);
jint resultArray[3]
= { r, inputLength - s->avail_in, outputLength - s->avail_out };
free(in);
e->SetByteArrayRegion(output, outputOffset, resultArray[2], out);
free(out);
e->SetIntArrayRegion(results, 0, 3, resultArray);
}