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-rw-r--r--app/src/main/java/com/jcraft/jzlib/ZOutputStream.java156
1 files changed, 156 insertions, 0 deletions
diff --git a/app/src/main/java/com/jcraft/jzlib/ZOutputStream.java b/app/src/main/java/com/jcraft/jzlib/ZOutputStream.java
new file mode 100644
index 0000000..afee65b
--- /dev/null
+++ b/app/src/main/java/com/jcraft/jzlib/ZOutputStream.java
@@ -0,0 +1,156 @@
+/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
+/*
+Copyright (c) 2001 Lapo Luchini.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the distribution.
+
+ 3. The names of the authors may not be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS
+OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/*
+ * This program is based on zlib-1.1.3, so all credit should go authors
+ * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
+ * and contributors of zlib.
+ */
+
+package com.jcraft.jzlib;
+import java.io.*;
+
+public class ZOutputStream extends OutputStream {
+
+ protected ZStream z=new ZStream();
+ protected int bufsize=512;
+ protected int flush=JZlib.Z_NO_FLUSH;
+ protected byte[] buf=new byte[bufsize],
+ buf1=new byte[1];
+ protected boolean compress;
+
+ protected OutputStream out;
+
+ public ZOutputStream(OutputStream out) {
+ super();
+ this.out=out;
+ z.inflateInit();
+ compress=false;
+ }
+
+ public ZOutputStream(OutputStream out, int level) {
+ this(out, level, false);
+ }
+ public ZOutputStream(OutputStream out, int level, boolean nowrap) {
+ super();
+ this.out=out;
+ z.deflateInit(level, nowrap);
+ compress=true;
+ }
+
+ public void write(int b) throws IOException {
+ buf1[0]=(byte)b;
+ write(buf1, 0, 1);
+ }
+
+ public void write(byte b[], int off, int len) throws IOException {
+ if(len==0)
+ return;
+ int err;
+ z.next_in=b;
+ z.next_in_index=off;
+ z.avail_in=len;
+ do{
+ z.next_out=buf;
+ z.next_out_index=0;
+ z.avail_out=bufsize;
+ if(compress)
+ err=z.deflate(flush);
+ else
+ err=z.inflate(flush);
+ if(err!=JZlib.Z_OK)
+ throw new ZStreamException((compress?"de":"in")+"flating: "+z.msg);
+ out.write(buf, 0, bufsize-z.avail_out);
+ }
+ while(z.avail_in>0 || z.avail_out==0);
+ }
+
+ public int getFlushMode() {
+ return(flush);
+ }
+
+ public void setFlushMode(int flush) {
+ this.flush=flush;
+ }
+
+ public void finish() throws IOException {
+ int err;
+ do{
+ z.next_out=buf;
+ z.next_out_index=0;
+ z.avail_out=bufsize;
+ if(compress){ err=z.deflate(JZlib.Z_FINISH); }
+ else{ err=z.inflate(JZlib.Z_FINISH); }
+ if(err!=JZlib.Z_STREAM_END && err != JZlib.Z_OK)
+ throw new ZStreamException((compress?"de":"in")+"flating: "+z.msg);
+ if(bufsize-z.avail_out>0){
+ out.write(buf, 0, bufsize-z.avail_out);
+ }
+ }
+ while(z.avail_in>0 || z.avail_out==0);
+ flush();
+ }
+ public void end() {
+ if(z==null)
+ return;
+ if(compress){ z.deflateEnd(); }
+ else{ z.inflateEnd(); }
+ z.free();
+ z=null;
+ }
+ public void close() throws IOException {
+ try{
+ try{finish();}
+ catch (IOException ignored) {}
+ }
+ finally{
+ end();
+ out.close();
+ out=null;
+ }
+ }
+
+ /**
+ * Returns the total number of bytes input so far.
+ */
+ public long getTotalIn() {
+ return z.total_in;
+ }
+
+ /**
+ * Returns the total number of bytes output so far.
+ */
+ public long getTotalOut() {
+ return z.total_out;
+ }
+
+ public void flush() throws IOException {
+ out.flush();
+ }
+
+}