Examples with InflaterInputStream java.util.zip.InflaterInputStream used on opensource projects

Example 36 with InflaterInputStream

use of java.util.zip.InflaterInputStream in project poi by apache.

the class PICT method read.

private byte[] read(byte[] data, int pos) throws IOException {
    ByteArrayInputStream bis = new ByteArrayInputStream(data);
    Header header = new Header();
    header.read(data, pos);
    long bs_exp = (long) pos + header.getSize();
    long bs_act = bis.skip(bs_exp);
    if (bs_exp != bs_act) {
        throw new EOFException();
    }
    byte[] chunk = new byte[4096];
    ByteArrayOutputStream out = new ByteArrayOutputStream(header.getWmfSize());
    InflaterInputStream inflater = new InflaterInputStream(bis);
    try {
        int count;
        while ((count = inflater.read(chunk)) >= 0) {
            out.write(chunk, 0, count);
            // PICT zip-stream can be erroneous, so we clear the array to determine
            // the maximum of read bytes, after the inflater crashed
            bytefill(chunk, (byte) 0);
        }
    } catch (Exception e) {
        int lastLen;
        for (lastLen = chunk.length - 1; lastLen >= 0 && chunk[lastLen] == 0; lastLen--) ;
        if (++lastLen > 0) {
            if (header.getWmfSize() > out.size()) {
                // sometimes the wmfsize is smaller than the amount of already successfully read bytes
                // in this case we take the lastLen as-is, otherwise we truncate it to the given size
                lastLen = Math.min(lastLen, header.getWmfSize() - out.size());
            }
            out.write(chunk, 0, lastLen);
        }
        // End of picture marker for PICT is 0x00 0xFF
        LOG.log(POILogger.ERROR, "PICT zip-stream is invalid, read as much as possible. Uncompressed length of header: " + header.getWmfSize() + " / Read bytes: " + out.size(), e);
    } finally {
        inflater.close();
    }
    return out.toByteArray();
}

Example 37 with InflaterInputStream

use of java.util.zip.InflaterInputStream in project poi by apache.

the class EMF method getData.

@Override
public byte[] getData() {
    try {
        byte[] rawdata = getRawData();
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        InputStream is = new ByteArrayInputStream(rawdata);
        Header header = new Header();
        header.read(rawdata, CHECKSUM_SIZE);
        long len = is.skip(header.getSize() + (long) CHECKSUM_SIZE);
        assert (len == header.getSize() + CHECKSUM_SIZE);
        InflaterInputStream inflater = new InflaterInputStream(is);
        byte[] chunk = new byte[4096];
        int count;
        while ((count = inflater.read(chunk)) >= 0) {
            out.write(chunk, 0, count);
        }
        inflater.close();
        return out.toByteArray();
    } catch (IOException e) {
        throw new HSLFException(e);
    }
}

Example 38 with InflaterInputStream

use of java.util.zip.InflaterInputStream in project intellij-community by JetBrains.

the class RefCountingStorage method internalReadStream.

private BufferExposingByteArrayOutputStream internalReadStream(int record) throws IOException {
    waitForPendingWriteForRecord(record);
    byte[] result;
    synchronized (myLock) {
        result = super.readBytes(record);
    }
    InflaterInputStream in = new CustomInflaterInputStream(result);
    try {
        final BufferExposingByteArrayOutputStream outputStream = new BufferExposingByteArrayOutputStream();
        StreamUtil.copyStreamContent(in, outputStream);
        return outputStream;
    } finally {
        in.close();
    }
}

Example 39 with InflaterInputStream

use of java.util.zip.InflaterInputStream in project intellij-community by JetBrains.

the class ConnectionStreams method setGzipped.

// Actions ================================================================
// Actions ================================================================
public void setGzipped() throws IOException {
    loggedWriter.flush();
    loggedOutputStream.flush();
    deflaterOutputStream = new DeflaterOutputStream(connection.getOutputStream(), new Deflater(6));
    setOutputStream(deflaterOutputStream);
    setInputStream(new InflaterInputStream(connection.getInputStream()));
}

Example 40 with InflaterInputStream

use of java.util.zip.InflaterInputStream in project gerrit by GerritCodeReview.

the class PatchList method readObject.

private void readObject(final ObjectInputStream input) throws IOException {
    final ByteArrayInputStream buf = new ByteArrayInputStream(readBytes(input));
    try (InflaterInputStream in = new InflaterInputStream(buf)) {
        oldId = readCanBeNull(in);
        newId = readNotNull(in);
        isMerge = readVarInt32(in) != 0;
        comparisonType = ComparisonType.readFrom(in);
        insertions = readVarInt32(in);
        deletions = readVarInt32(in);
        final int cnt = readVarInt32(in);
        final PatchListEntry[] all = new PatchListEntry[cnt];
        for (int i = 0; i < all.length; i++) {
            all[i] = PatchListEntry.readFrom(in);
        }
        patches = all;
    }
}