/*
* Read a four-byte int in little-endian order.
*/
internal static long readIntLE(java.io.RandomAccessFile raf) //throws IOException
{
int b0 = raf.read();
int b1 = raf.read();
int b2 = raf.read();
int b3 = raf.read();
if (b3 < 0)
{
throw new java.io.EOFException(); //Messages.getString("archive.3B"));
}
return(b0 | (b1 << 8) | (b2 << 16) | (b3 << 24)); // ATTENTION: DOES SIGN EXTENSION: IS THIS WANTED?
}
/**
* Searches for the "End of central dir record", parses
* it and positions the stream at the first central directory
* record.
*/
private void positionAtCentralDirectory()
//throws IOException
{
bool found = false;
long off = archive.length() - MIN_EOCD_SIZE;
long stopSearching = java.lang.Math.max(0L, archive.length() - MAX_EOCD_SIZE);
if (off >= 0)
{
archive.seek(off);
byte[] sig = ZipArchiveOutputStream.EOCD_SIG;
int curr = archive.read();
while (off >= stopSearching && curr != -1)
{
if (curr == sig[POS_0])
{
curr = archive.read();
if (curr == sig[POS_1])
{
curr = archive.read();
if (curr == sig[POS_2])
{
curr = archive.read();
if (curr == sig[POS_3])
{
found = true;
break;
}
}
}
}
archive.seek(--off);
curr = archive.read();
}
}
if (!found)
{
throw new java.util.zip.ZipException("archive is not a ZIP archive");
}
archive.seek(off + CFD_LOCATOR_OFFSET);
byte[] cfdOffset = new byte[WORD];
archive.readFully(cfdOffset);
archive.seek(ZipLong.getValue(cfdOffset));
}
public override int read(byte[] b, int off, int len) //throws IOException {
{
lock (mSharedRaf) {
mSharedRaf.seek(mOffset);
if (len > mLength - mOffset)
{
len = (int)(mLength - mOffset);
}
int count = mSharedRaf.read(b, off, len);
if (count > 0)
{
mOffset += count;
return(count);
}
else
{
return(-1);
}
}
}
