From 49b779dcaf03e3598d2709b321e20ea029b25163 Mon Sep 17 00:00:00 2001
From: Kenny Root <kenny@the-b.org>
Date: Wed, 1 Oct 2014 23:04:51 +0100
Subject: Convert to gradle build system

---
 app/src/main/java/com/jcraft/jzlib/Inflate.java | 374 ++++++++++++++++++++++++
 1 file changed, 374 insertions(+)
 create mode 100644 app/src/main/java/com/jcraft/jzlib/Inflate.java

(limited to 'app/src/main/java/com/jcraft/jzlib/Inflate.java')

diff --git a/app/src/main/java/com/jcraft/jzlib/Inflate.java b/app/src/main/java/com/jcraft/jzlib/Inflate.java
new file mode 100644
index 0000000..30310f6
--- /dev/null
+++ b/app/src/main/java/com/jcraft/jzlib/Inflate.java
@@ -0,0 +1,374 @@
+/* -*-mode:java; c-basic-offset:2; -*- */
+/*
+Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
+
+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 JCRAFT,
+INC. 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;
+
+final class Inflate{
+  
+  static final private int MAX_WBITS=15; // 32K LZ77 window
+
+  // preset dictionary flag in zlib header
+  static final private int PRESET_DICT=0x20;
+
+  static final int Z_NO_FLUSH=0;
+  static final int Z_PARTIAL_FLUSH=1;
+  static final int Z_SYNC_FLUSH=2;
+  static final int Z_FULL_FLUSH=3;
+  static final int Z_FINISH=4;
+
+  static final private int Z_DEFLATED=8;
+
+  static final private int Z_OK=0;
+  static final private int Z_STREAM_END=1;
+  static final private int Z_NEED_DICT=2;
+  static final private int Z_ERRNO=-1;
+  static final private int Z_STREAM_ERROR=-2;
+  static final private int Z_DATA_ERROR=-3;
+  static final private int Z_MEM_ERROR=-4;
+  static final private int Z_BUF_ERROR=-5;
+  static final private int Z_VERSION_ERROR=-6;
+
+  static final private int METHOD=0;   // waiting for method byte
+  static final private int FLAG=1;     // waiting for flag byte
+  static final private int DICT4=2;    // four dictionary check bytes to go
+  static final private int DICT3=3;    // three dictionary check bytes to go
+  static final private int DICT2=4;    // two dictionary check bytes to go
+  static final private int DICT1=5;    // one dictionary check byte to go
+  static final private int DICT0=6;    // waiting for inflateSetDictionary
+  static final private int BLOCKS=7;   // decompressing blocks
+  static final private int CHECK4=8;   // four check bytes to go
+  static final private int CHECK3=9;   // three check bytes to go
+  static final private int CHECK2=10;  // two check bytes to go
+  static final private int CHECK1=11;  // one check byte to go
+  static final private int DONE=12;    // finished check, done
+  static final private int BAD=13;     // got an error--stay here
+
+  int mode;                            // current inflate mode
+
+  // mode dependent information
+  int method;        // if FLAGS, method byte
+
+  // if CHECK, check values to compare
+  long[] was=new long[1] ; // computed check value
+  long need;               // stream check value
+
+  // if BAD, inflateSync's marker bytes count
+  int marker;
+
+  // mode independent information
+  int  nowrap;          // flag for no wrapper
+  int wbits;            // log2(window size)  (8..15, defaults to 15)
+
+  InfBlocks blocks;     // current inflate_blocks state
+
+  int inflateReset(ZStream z){
+    if(z == null || z.istate == null) return Z_STREAM_ERROR;
+    
+    z.total_in = z.total_out = 0;
+    z.msg = null;
+    z.istate.mode = z.istate.nowrap!=0 ? BLOCKS : METHOD;
+    z.istate.blocks.reset(z, null);
+    return Z_OK;
+  }
+
+  int inflateEnd(ZStream z){
+    if(blocks != null)
+      blocks.free(z);
+    blocks=null;
+    //    ZFREE(z, z->state);
+    return Z_OK;
+  }
+
+  int inflateInit(ZStream z, int w){
+    z.msg = null;
+    blocks = null;
+
+    // handle undocumented nowrap option (no zlib header or check)
+    nowrap = 0;
+    if(w < 0){
+      w = - w;
+      nowrap = 1;
+    }
+
+    // set window size
+    if(w<8 ||w>15){
+      inflateEnd(z);
+      return Z_STREAM_ERROR;
+    }
+    wbits=w;
+
+    z.istate.blocks=new InfBlocks(z, 
+				  z.istate.nowrap!=0 ? null : this,
+				  1<<w);
+
+    // reset state
+    inflateReset(z);
+    return Z_OK;
+  }
+
+  int inflate(ZStream z, int f){
+    int r;
+    int b;
+
+    if(z == null || z.istate == null || z.next_in == null)
+      return Z_STREAM_ERROR;
+    f = f == Z_FINISH ? Z_BUF_ERROR : Z_OK;
+    r = Z_BUF_ERROR;
+    while (true){
+//System.out.println("mode: "+z.istate.mode);
+      switch (z.istate.mode){
+      case METHOD:
+
+        if(z.avail_in==0)return r;r=f;
+
+        z.avail_in--; z.total_in++;
+        if(((z.istate.method = z.next_in[z.next_in_index++])&0xf)!=Z_DEFLATED){
+          z.istate.mode = BAD;
+          z.msg="unknown compression method";
+          z.istate.marker = 5;       // can't try inflateSync
+          break;
+        }
+        if((z.istate.method>>4)+8>z.istate.wbits){
+          z.istate.mode = BAD;
+          z.msg="invalid window size";
+          z.istate.marker = 5;       // can't try inflateSync
+          break;
+        }
+        z.istate.mode=FLAG;
+      case FLAG:
+
+        if(z.avail_in==0)return r;r=f;
+
+        z.avail_in--; z.total_in++;
+        b = (z.next_in[z.next_in_index++])&0xff;
+
+        if((((z.istate.method << 8)+b) % 31)!=0){
+          z.istate.mode = BAD;
+          z.msg = "incorrect header check";
+          z.istate.marker = 5;       // can't try inflateSync
+          break;
+        }
+
+        if((b&PRESET_DICT)==0){
+          z.istate.mode = BLOCKS;
+          break;
+        }
+        z.istate.mode = DICT4;
+      case DICT4:
+
+        if(z.avail_in==0)return r;r=f;
+
+        z.avail_in--; z.total_in++;
+        z.istate.need=((z.next_in[z.next_in_index++]&0xff)<<24)&0xff000000L;
+        z.istate.mode=DICT3;
+      case DICT3:
+
+        if(z.avail_in==0)return r;r=f;
+
+        z.avail_in--; z.total_in++;
+        z.istate.need+=((z.next_in[z.next_in_index++]&0xff)<<16)&0xff0000L;
+        z.istate.mode=DICT2;
+      case DICT2:
+
+        if(z.avail_in==0)return r;r=f;
+
+        z.avail_in--; z.total_in++;
+        z.istate.need+=((z.next_in[z.next_in_index++]&0xff)<<8)&0xff00L;
+        z.istate.mode=DICT1;
+      case DICT1:
+
+        if(z.avail_in==0)return r;r=f;
+
+        z.avail_in--; z.total_in++;
+        z.istate.need += (z.next_in[z.next_in_index++]&0xffL);
+        z.adler = z.istate.need;
+        z.istate.mode = DICT0;
+        return Z_NEED_DICT;
+      case DICT0:
+        z.istate.mode = BAD;
+        z.msg = "need dictionary";
+        z.istate.marker = 0;       // can try inflateSync
+        return Z_STREAM_ERROR;
+      case BLOCKS:
+
+        r = z.istate.blocks.proc(z, r);
+        if(r == Z_DATA_ERROR){
+          z.istate.mode = BAD;
+          z.istate.marker = 0;     // can try inflateSync
+          break;
+        }
+        if(r == Z_OK){
+          r = f;
+        }
+        if(r != Z_STREAM_END){
+          return r;
+        }
+        r = f;
+        z.istate.blocks.reset(z, z.istate.was);
+        if(z.istate.nowrap!=0){
+          z.istate.mode=DONE;
+          break;
+        }
+        z.istate.mode=CHECK4;
+      case CHECK4:
+
+        if(z.avail_in==0)return r;r=f;
+
+        z.avail_in--; z.total_in++;
+        z.istate.need=((z.next_in[z.next_in_index++]&0xff)<<24)&0xff000000L;
+        z.istate.mode=CHECK3;
+      case CHECK3:
+
+        if(z.avail_in==0)return r;r=f;
+
+        z.avail_in--; z.total_in++;
+        z.istate.need+=((z.next_in[z.next_in_index++]&0xff)<<16)&0xff0000L;
+        z.istate.mode = CHECK2;
+      case CHECK2:
+
+        if(z.avail_in==0)return r;r=f;
+
+        z.avail_in--; z.total_in++;
+        z.istate.need+=((z.next_in[z.next_in_index++]&0xff)<<8)&0xff00L;
+        z.istate.mode = CHECK1;
+      case CHECK1:
+
+        if(z.avail_in==0)return r;r=f;
+
+        z.avail_in--; z.total_in++;
+        z.istate.need+=(z.next_in[z.next_in_index++]&0xffL);
+
+        if(((int)(z.istate.was[0])) != ((int)(z.istate.need))){
+          z.istate.mode = BAD;
+          z.msg = "incorrect data check";
+          z.istate.marker = 5;       // can't try inflateSync
+          break;
+        }
+
+        z.istate.mode = DONE;
+      case DONE:
+        return Z_STREAM_END;
+      case BAD:
+        return Z_DATA_ERROR;
+      default:
+        return Z_STREAM_ERROR;
+      }
+    }
+  }
+
+
+  int inflateSetDictionary(ZStream z, byte[] dictionary, int dictLength){
+    int index=0;
+    int length = dictLength;
+    if(z==null || z.istate == null|| z.istate.mode != DICT0)
+      return Z_STREAM_ERROR;
+
+    if(z._adler.adler32(1L, dictionary, 0, dictLength)!=z.adler){
+      return Z_DATA_ERROR;
+    }
+
+    z.adler = z._adler.adler32(0, null, 0, 0);
+
+    if(length >= (1<<z.istate.wbits)){
+      length = (1<<z.istate.wbits)-1;
+      index=dictLength - length;
+    }
+    z.istate.blocks.set_dictionary(dictionary, index, length);
+    z.istate.mode = BLOCKS;
+    return Z_OK;
+  }
+
+  static private byte[] mark = {(byte)0, (byte)0, (byte)0xff, (byte)0xff};
+
+  int inflateSync(ZStream z){
+    int n;       // number of bytes to look at
+    int p;       // pointer to bytes
+    int m;       // number of marker bytes found in a row
+    long r, w;   // temporaries to save total_in and total_out
+
+    // set up
+    if(z == null || z.istate == null)
+      return Z_STREAM_ERROR;
+    if(z.istate.mode != BAD){
+      z.istate.mode = BAD;
+      z.istate.marker = 0;
+    }
+    if((n=z.avail_in)==0)
+      return Z_BUF_ERROR;
+    p=z.next_in_index;
+    m=z.istate.marker;
+
+    // search
+    while (n!=0 && m < 4){
+      if(z.next_in[p] == mark[m]){
+        m++;
+      }
+      else if(z.next_in[p]!=0){
+        m = 0;
+      }
+      else{
+        m = 4 - m;
+      }
+      p++; n--;
+    }
+
+    // restore
+    z.total_in += p-z.next_in_index;
+    z.next_in_index = p;
+    z.avail_in = n;
+    z.istate.marker = m;
+
+    // return no joy or set up to restart on a new block
+    if(m != 4){
+      return Z_DATA_ERROR;
+    }
+    r=z.total_in;  w=z.total_out;
+    inflateReset(z);
+    z.total_in=r;  z.total_out = w;
+    z.istate.mode = BLOCKS;
+    return Z_OK;
+  }
+
+  // Returns true if inflate is currently at the end of a block generated
+  // by Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
+  // implementation to provide an additional safety check. PPP uses Z_SYNC_FLUSH
+  // but removes the length bytes of the resulting empty stored block. When
+  // decompressing, PPP checks that at the end of input packet, inflate is
+  // waiting for these length bytes.
+  int inflateSyncPoint(ZStream z){
+    if(z == null || z.istate == null || z.istate.blocks == null)
+      return Z_STREAM_ERROR;
+    return z.istate.blocks.sync_point();
+  }
+}
-- 
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