line source
+ − /* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
+ − /*
+ − 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 InfTree{
+ −
+ − static final private int MANY=1440;
+ −
+ − 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 int fixed_bl = 9;
+ − static final int fixed_bd = 5;
+ −
+ − static final int[] fixed_tl = {
+ − 96,7,256, 0,8,80, 0,8,16, 84,8,115,
+ − 82,7,31, 0,8,112, 0,8,48, 0,9,192,
+ − 80,7,10, 0,8,96, 0,8,32, 0,9,160,
+ − 0,8,0, 0,8,128, 0,8,64, 0,9,224,
+ − 80,7,6, 0,8,88, 0,8,24, 0,9,144,
+ − 83,7,59, 0,8,120, 0,8,56, 0,9,208,
+ − 81,7,17, 0,8,104, 0,8,40, 0,9,176,
+ − 0,8,8, 0,8,136, 0,8,72, 0,9,240,
+ − 80,7,4, 0,8,84, 0,8,20, 85,8,227,
+ − 83,7,43, 0,8,116, 0,8,52, 0,9,200,
+ − 81,7,13, 0,8,100, 0,8,36, 0,9,168,
+ − 0,8,4, 0,8,132, 0,8,68, 0,9,232,
+ − 80,7,8, 0,8,92, 0,8,28, 0,9,152,
+ − 84,7,83, 0,8,124, 0,8,60, 0,9,216,
+ − 82,7,23, 0,8,108, 0,8,44, 0,9,184,
+ − 0,8,12, 0,8,140, 0,8,76, 0,9,248,
+ − 80,7,3, 0,8,82, 0,8,18, 85,8,163,
+ − 83,7,35, 0,8,114, 0,8,50, 0,9,196,
+ − 81,7,11, 0,8,98, 0,8,34, 0,9,164,
+ − 0,8,2, 0,8,130, 0,8,66, 0,9,228,
+ − 80,7,7, 0,8,90, 0,8,26, 0,9,148,
+ − 84,7,67, 0,8,122, 0,8,58, 0,9,212,
+ − 82,7,19, 0,8,106, 0,8,42, 0,9,180,
+ − 0,8,10, 0,8,138, 0,8,74, 0,9,244,
+ − 80,7,5, 0,8,86, 0,8,22, 192,8,0,
+ − 83,7,51, 0,8,118, 0,8,54, 0,9,204,
+ − 81,7,15, 0,8,102, 0,8,38, 0,9,172,
+ − 0,8,6, 0,8,134, 0,8,70, 0,9,236,
+ − 80,7,9, 0,8,94, 0,8,30, 0,9,156,
+ − 84,7,99, 0,8,126, 0,8,62, 0,9,220,
+ − 82,7,27, 0,8,110, 0,8,46, 0,9,188,
+ − 0,8,14, 0,8,142, 0,8,78, 0,9,252,
+ − 96,7,256, 0,8,81, 0,8,17, 85,8,131,
+ − 82,7,31, 0,8,113, 0,8,49, 0,9,194,
+ − 80,7,10, 0,8,97, 0,8,33, 0,9,162,
+ − 0,8,1, 0,8,129, 0,8,65, 0,9,226,
+ − 80,7,6, 0,8,89, 0,8,25, 0,9,146,
+ − 83,7,59, 0,8,121, 0,8,57, 0,9,210,
+ − 81,7,17, 0,8,105, 0,8,41, 0,9,178,
+ − 0,8,9, 0,8,137, 0,8,73, 0,9,242,
+ − 80,7,4, 0,8,85, 0,8,21, 80,8,258,
+ − 83,7,43, 0,8,117, 0,8,53, 0,9,202,
+ − 81,7,13, 0,8,101, 0,8,37, 0,9,170,
+ − 0,8,5, 0,8,133, 0,8,69, 0,9,234,
+ − 80,7,8, 0,8,93, 0,8,29, 0,9,154,
+ − 84,7,83, 0,8,125, 0,8,61, 0,9,218,
+ − 82,7,23, 0,8,109, 0,8,45, 0,9,186,
+ − 0,8,13, 0,8,141, 0,8,77, 0,9,250,
+ − 80,7,3, 0,8,83, 0,8,19, 85,8,195,
+ − 83,7,35, 0,8,115, 0,8,51, 0,9,198,
+ − 81,7,11, 0,8,99, 0,8,35, 0,9,166,
+ − 0,8,3, 0,8,131, 0,8,67, 0,9,230,
+ − 80,7,7, 0,8,91, 0,8,27, 0,9,150,
+ − 84,7,67, 0,8,123, 0,8,59, 0,9,214,
+ − 82,7,19, 0,8,107, 0,8,43, 0,9,182,
+ − 0,8,11, 0,8,139, 0,8,75, 0,9,246,
+ − 80,7,5, 0,8,87, 0,8,23, 192,8,0,
+ − 83,7,51, 0,8,119, 0,8,55, 0,9,206,
+ − 81,7,15, 0,8,103, 0,8,39, 0,9,174,
+ − 0,8,7, 0,8,135, 0,8,71, 0,9,238,
+ − 80,7,9, 0,8,95, 0,8,31, 0,9,158,
+ − 84,7,99, 0,8,127, 0,8,63, 0,9,222,
+ − 82,7,27, 0,8,111, 0,8,47, 0,9,190,
+ − 0,8,15, 0,8,143, 0,8,79, 0,9,254,
+ − 96,7,256, 0,8,80, 0,8,16, 84,8,115,
+ − 82,7,31, 0,8,112, 0,8,48, 0,9,193,
+ −
+ − 80,7,10, 0,8,96, 0,8,32, 0,9,161,
+ − 0,8,0, 0,8,128, 0,8,64, 0,9,225,
+ − 80,7,6, 0,8,88, 0,8,24, 0,9,145,
+ − 83,7,59, 0,8,120, 0,8,56, 0,9,209,
+ − 81,7,17, 0,8,104, 0,8,40, 0,9,177,
+ − 0,8,8, 0,8,136, 0,8,72, 0,9,241,
+ − 80,7,4, 0,8,84, 0,8,20, 85,8,227,
+ − 83,7,43, 0,8,116, 0,8,52, 0,9,201,
+ − 81,7,13, 0,8,100, 0,8,36, 0,9,169,
+ − 0,8,4, 0,8,132, 0,8,68, 0,9,233,
+ − 80,7,8, 0,8,92, 0,8,28, 0,9,153,
+ − 84,7,83, 0,8,124, 0,8,60, 0,9,217,
+ − 82,7,23, 0,8,108, 0,8,44, 0,9,185,
+ − 0,8,12, 0,8,140, 0,8,76, 0,9,249,
+ − 80,7,3, 0,8,82, 0,8,18, 85,8,163,
+ − 83,7,35, 0,8,114, 0,8,50, 0,9,197,
+ − 81,7,11, 0,8,98, 0,8,34, 0,9,165,
+ − 0,8,2, 0,8,130, 0,8,66, 0,9,229,
+ − 80,7,7, 0,8,90, 0,8,26, 0,9,149,
+ − 84,7,67, 0,8,122, 0,8,58, 0,9,213,
+ − 82,7,19, 0,8,106, 0,8,42, 0,9,181,
+ − 0,8,10, 0,8,138, 0,8,74, 0,9,245,
+ − 80,7,5, 0,8,86, 0,8,22, 192,8,0,
+ − 83,7,51, 0,8,118, 0,8,54, 0,9,205,
+ − 81,7,15, 0,8,102, 0,8,38, 0,9,173,
+ − 0,8,6, 0,8,134, 0,8,70, 0,9,237,
+ − 80,7,9, 0,8,94, 0,8,30, 0,9,157,
+ − 84,7,99, 0,8,126, 0,8,62, 0,9,221,
+ − 82,7,27, 0,8,110, 0,8,46, 0,9,189,
+ − 0,8,14, 0,8,142, 0,8,78, 0,9,253,
+ − 96,7,256, 0,8,81, 0,8,17, 85,8,131,
+ − 82,7,31, 0,8,113, 0,8,49, 0,9,195,
+ − 80,7,10, 0,8,97, 0,8,33, 0,9,163,
+ − 0,8,1, 0,8,129, 0,8,65, 0,9,227,
+ − 80,7,6, 0,8,89, 0,8,25, 0,9,147,
+ − 83,7,59, 0,8,121, 0,8,57, 0,9,211,
+ − 81,7,17, 0,8,105, 0,8,41, 0,9,179,
+ − 0,8,9, 0,8,137, 0,8,73, 0,9,243,
+ − 80,7,4, 0,8,85, 0,8,21, 80,8,258,
+ − 83,7,43, 0,8,117, 0,8,53, 0,9,203,
+ − 81,7,13, 0,8,101, 0,8,37, 0,9,171,
+ − 0,8,5, 0,8,133, 0,8,69, 0,9,235,
+ − 80,7,8, 0,8,93, 0,8,29, 0,9,155,
+ − 84,7,83, 0,8,125, 0,8,61, 0,9,219,
+ − 82,7,23, 0,8,109, 0,8,45, 0,9,187,
+ − 0,8,13, 0,8,141, 0,8,77, 0,9,251,
+ − 80,7,3, 0,8,83, 0,8,19, 85,8,195,
+ − 83,7,35, 0,8,115, 0,8,51, 0,9,199,
+ − 81,7,11, 0,8,99, 0,8,35, 0,9,167,
+ − 0,8,3, 0,8,131, 0,8,67, 0,9,231,
+ − 80,7,7, 0,8,91, 0,8,27, 0,9,151,
+ − 84,7,67, 0,8,123, 0,8,59, 0,9,215,
+ − 82,7,19, 0,8,107, 0,8,43, 0,9,183,
+ − 0,8,11, 0,8,139, 0,8,75, 0,9,247,
+ − 80,7,5, 0,8,87, 0,8,23, 192,8,0,
+ − 83,7,51, 0,8,119, 0,8,55, 0,9,207,
+ − 81,7,15, 0,8,103, 0,8,39, 0,9,175,
+ − 0,8,7, 0,8,135, 0,8,71, 0,9,239,
+ − 80,7,9, 0,8,95, 0,8,31, 0,9,159,
+ − 84,7,99, 0,8,127, 0,8,63, 0,9,223,
+ − 82,7,27, 0,8,111, 0,8,47, 0,9,191,
+ − 0,8,15, 0,8,143, 0,8,79, 0,9,255
+ − };
+ − static final int[] fixed_td = {
+ − 80,5,1, 87,5,257, 83,5,17, 91,5,4097,
+ − 81,5,5, 89,5,1025, 85,5,65, 93,5,16385,
+ − 80,5,3, 88,5,513, 84,5,33, 92,5,8193,
+ − 82,5,9, 90,5,2049, 86,5,129, 192,5,24577,
+ − 80,5,2, 87,5,385, 83,5,25, 91,5,6145,
+ − 81,5,7, 89,5,1537, 85,5,97, 93,5,24577,
+ − 80,5,4, 88,5,769, 84,5,49, 92,5,12289,
+ − 82,5,13, 90,5,3073, 86,5,193, 192,5,24577
+ − };
+ −
+ − // Tables for deflate from PKZIP's appnote.txt.
+ − static final int[] cplens = { // Copy lengths for literal codes 257..285
+ − 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
+ − 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
+ − };
+ −
+ − // see note #13 above about 258
+ − static final int[] cplext = { // Extra bits for literal codes 257..285
+ − 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
+ − 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 112, 112 // 112==invalid
+ − };
+ −
+ − static final int[] cpdist = { // Copy offsets for distance codes 0..29
+ − 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
+ − 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
+ − 8193, 12289, 16385, 24577
+ − };
+ −
+ − static final int[] cpdext = { // Extra bits for distance codes
+ − 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
+ − 7, 7, 8, 8, 9, 9, 10, 10, 11, 11,
+ − 12, 12, 13, 13};
+ −
+ − // If BMAX needs to be larger than 16, then h and x[] should be uLong.
+ − static final int BMAX=15; // maximum bit length of any code
+ −
+ − int[] hn = null; // hufts used in space
+ − int[] v = null; // work area for huft_build
+ − int[] c = null; // bit length count table
+ − int[] r = null; // table entry for structure assignment
+ − int[] u = null; // table stack
+ − int[] x = null; // bit offsets, then code stack
+ −
+ − private int huft_build(int[] b, // code lengths in bits (all assumed <= BMAX)
+ − int bindex,
+ − int n, // number of codes (assumed <= 288)
+ − int s, // number of simple-valued codes (0..s-1)
+ − int[] d, // list of base values for non-simple codes
+ − int[] e, // list of extra bits for non-simple codes
+ − int[] t, // result: starting table
+ − int[] m, // maximum lookup bits, returns actual
+ − int[] hp,// space for trees
+ − int[] hn,// hufts used in space
+ − int[] v // working area: values in order of bit length
+ − ){
+ − // Given a list of code lengths and a maximum table size, make a set of
+ − // tables to decode that set of codes. Return Z_OK on success, Z_BUF_ERROR
+ − // if the given code set is incomplete (the tables are still built in this
+ − // case), Z_DATA_ERROR if the input is invalid (an over-subscribed set of
+ − // lengths), or Z_MEM_ERROR if not enough memory.
+ −
+ − int a; // counter for codes of length k
+ − int f; // i repeats in table every f entries
+ − int g; // maximum code length
+ − int h; // table level
+ − int i; // counter, current code
+ − int j; // counter
+ − int k; // number of bits in current code
+ − int l; // bits per table (returned in m)
+ − int mask; // (1 << w) - 1, to avoid cc -O bug on HP
+ − int p; // pointer into c[], b[], or v[]
+ − int q; // points to current table
+ − int w; // bits before this table == (l * h)
+ − int xp; // pointer into x
+ − int y; // number of dummy codes added
+ − int z; // number of entries in current table
+ −
+ − // Generate counts for each bit length
+ −
+ − p = 0; i = n;
+ − do {
+ − c[b[bindex+p]]++; p++; i--; // assume all entries <= BMAX
+ − }while(i!=0);
+ −
+ − if(c[0] == n){ // null input--all zero length codes
+ − t[0] = -1;
+ − m[0] = 0;
+ − return Z_OK;
+ − }
+ −
+ − // Find minimum and maximum length, bound *m by those
+ − l = m[0];
+ − for (j = 1; j <= BMAX; j++)
+ − if(c[j]!=0) break;
+ − k = j; // minimum code length
+ − if(l < j){
+ − l = j;
+ − }
+ − for (i = BMAX; i!=0; i--){
+ − if(c[i]!=0) break;
+ − }
+ − g = i; // maximum code length
+ − if(l > i){
+ − l = i;
+ − }
+ − m[0] = l;
+ −
+ − // Adjust last length count to fill out codes, if needed
+ − for (y = 1 << j; j < i; j++, y <<= 1){
+ − if ((y -= c[j]) < 0){
+ − return Z_DATA_ERROR;
+ − }
+ − }
+ − if ((y -= c[i]) < 0){
+ − return Z_DATA_ERROR;
+ − }
+ − c[i] += y;
+ −
+ − // Generate starting offsets into the value table for each length
+ − x[1] = j = 0;
+ − p = 1; xp = 2;
+ − while (--i!=0) { // note that i == g from above
+ − x[xp] = (j += c[p]);
+ − xp++;
+ − p++;
+ − }
+ −
+ − // Make a table of values in order of bit lengths
+ − i = 0; p = 0;
+ − do {
+ − if ((j = b[bindex+p]) != 0){
+ − v[x[j]++] = i;
+ − }
+ − p++;
+ − }
+ − while (++i < n);
+ − n = x[g]; // set n to length of v
+ −
+ − // Generate the Huffman codes and for each, make the table entries
+ − x[0] = i = 0; // first Huffman code is zero
+ − p = 0; // grab values in bit order
+ − h = -1; // no tables yet--level -1
+ − w = -l; // bits decoded == (l * h)
+ − u[0] = 0; // just to keep compilers happy
+ − q = 0; // ditto
+ − z = 0; // ditto
+ −
+ − // go through the bit lengths (k already is bits in shortest code)
+ − for (; k <= g; k++){
+ − a = c[k];
+ − while (a--!=0){
+ − // here i is the Huffman code of length k bits for value *p
+ − // make tables up to required level
+ − while (k > w + l){
+ − h++;
+ − w += l; // previous table always l bits
+ − // compute minimum size table less than or equal to l bits
+ − z = g - w;
+ − z = (z > l) ? l : z; // table size upper limit
+ − if((f=1<<(j=k-w))>a+1){ // try a k-w bit table
+ − // too few codes for k-w bit table
+ − f -= a + 1; // deduct codes from patterns left
+ − xp = k;
+ − if(j < z){
+ − while (++j < z){ // try smaller tables up to z bits
+ − if((f <<= 1) <= c[++xp])
+ − break; // enough codes to use up j bits
+ − f -= c[xp]; // else deduct codes from patterns
+ − }
+ − }
+ − }
+ − z = 1 << j; // table entries for j-bit table
+ −
+ − // allocate new table
+ − if (hn[0] + z > MANY){ // (note: doesn't matter for fixed)
+ − return Z_DATA_ERROR; // overflow of MANY
+ − }
+ − u[h] = q = /*hp+*/ hn[0]; // DEBUG
+ − hn[0] += z;
+ −
+ − // connect to last table, if there is one
+ − if(h!=0){
+ − x[h]=i; // save pattern for backing up
+ − r[0]=(byte)j; // bits in this table
+ − r[1]=(byte)l; // bits to dump before this table
+ − j=i>>>(w - l);
+ − r[2] = (int)(q - u[h-1] - j); // offset to this table
+ − System.arraycopy(r, 0, hp, (u[h-1]+j)*3, 3); // connect to last table
+ − }
+ − else{
+ − t[0] = q; // first table is returned result
+ − }
+ − }
+ −
+ − // set up table entry in r
+ − r[1] = (byte)(k - w);
+ − if (p >= n){
+ − r[0] = 128 + 64; // out of values--invalid code
+ − }
+ − else if (v[p] < s){
+ − r[0] = (byte)(v[p] < 256 ? 0 : 32 + 64); // 256 is end-of-block
+ − r[2] = v[p++]; // simple code is just the value
+ − }
+ − else{
+ − r[0]=(byte)(e[v[p]-s]+16+64); // non-simple--look up in lists
+ − r[2]=d[v[p++] - s];
+ − }
+ −
+ − // fill code-like entries with r
+ − f=1<<(k-w);
+ − for (j=i>>>w;j<z;j+=f){
+ − System.arraycopy(r, 0, hp, (q+j)*3, 3);
+ − }
+ −
+ − // backwards increment the k-bit code i
+ − for (j = 1 << (k - 1); (i & j)!=0; j >>>= 1){
+ − i ^= j;
+ − }
+ − i ^= j;
+ −
+ − // backup over finished tables
+ − mask = (1 << w) - 1; // needed on HP, cc -O bug
+ − while ((i & mask) != x[h]){
+ − h--; // don't need to update q
+ − w -= l;
+ − mask = (1 << w) - 1;
+ − }
+ − }
+ − }
+ − // Return Z_BUF_ERROR if we were given an incomplete table
+ − return y != 0 && g != 1 ? Z_BUF_ERROR : Z_OK;
+ − }
+ −
+ − int inflate_trees_bits(int[] c, // 19 code lengths
+ − int[] bb, // bits tree desired/actual depth
+ − int[] tb, // bits tree result
+ − int[] hp, // space for trees
+ − ZStream z // for messages
+ − ){
+ − int result;
+ − initWorkArea(19);
+ − hn[0]=0;
+ − result = huft_build(c, 0, 19, 19, null, null, tb, bb, hp, hn, v);
+ −
+ − if(result == Z_DATA_ERROR){
+ − z.msg = "oversubscribed dynamic bit lengths tree";
+ − }
+ − else if(result == Z_BUF_ERROR || bb[0] == 0){
+ − z.msg = "incomplete dynamic bit lengths tree";
+ − result = Z_DATA_ERROR;
+ − }
+ − return result;
+ − }
+ −
+ − int inflate_trees_dynamic(int nl, // number of literal/length codes
+ − int nd, // number of distance codes
+ − int[] c, // that many (total) code lengths
+ − int[] bl, // literal desired/actual bit depth
+ − int[] bd, // distance desired/actual bit depth
+ − int[] tl, // literal/length tree result
+ − int[] td, // distance tree result
+ − int[] hp, // space for trees
+ − ZStream z // for messages
+ − ){
+ − int result;
+ −
+ − // build literal/length tree
+ − initWorkArea(288);
+ − hn[0]=0;
+ − result = huft_build(c, 0, nl, 257, cplens, cplext, tl, bl, hp, hn, v);
+ − if (result != Z_OK || bl[0] == 0){
+ − if(result == Z_DATA_ERROR){
+ − z.msg = "oversubscribed literal/length tree";
+ − }
+ − else if (result != Z_MEM_ERROR){
+ − z.msg = "incomplete literal/length tree";
+ − result = Z_DATA_ERROR;
+ − }
+ − return result;
+ − }
+ −
+ − // build distance tree
+ − initWorkArea(288);
+ − result = huft_build(c, nl, nd, 0, cpdist, cpdext, td, bd, hp, hn, v);
+ −
+ − if (result != Z_OK || (bd[0] == 0 && nl > 257)){
+ − if (result == Z_DATA_ERROR){
+ − z.msg = "oversubscribed distance tree";
+ − }
+ − else if (result == Z_BUF_ERROR) {
+ − z.msg = "incomplete distance tree";
+ − result = Z_DATA_ERROR;
+ − }
+ − else if (result != Z_MEM_ERROR){
+ − z.msg = "empty distance tree with lengths";
+ − result = Z_DATA_ERROR;
+ − }
+ − return result;
+ − }
+ −
+ − return Z_OK;
+ − }
+ −
+ − static int inflate_trees_fixed(int[] bl, //literal desired/actual bit depth
+ − int[] bd, //distance desired/actual bit depth
+ − int[][] tl,//literal/length tree result
+ − int[][] td,//distance tree result
+ − ZStream z //for memory allocation
+ − ){
+ − bl[0]=fixed_bl;
+ − bd[0]=fixed_bd;
+ − tl[0]=fixed_tl;
+ − td[0]=fixed_td;
+ − return Z_OK;
+ − }
+ −
+ − private void initWorkArea(int vsize){
+ − if(hn==null){
+ − hn=new int[1];
+ − v=new int[vsize];
+ − c=new int[BMAX+1];
+ − r=new int[3];
+ − u=new int[BMAX];
+ − x=new int[BMAX+1];
+ − }
+ − if(v.length<vsize){ v=new int[vsize]; }
+ − for(int i=0; i<vsize; i++){v[i]=0;}
+ − for(int i=0; i<BMAX+1; i++){c[i]=0;}
+ − for(int i=0; i<3; i++){r[i]=0;}
+ − System.arraycopy(c, 0, u, 0, BMAX);
+ − System.arraycopy(c, 0, x, 0, BMAX+1);
+ − }
+ − }