/* inftrees.c -- generate Huffman trees for efficient decoding *Copyright(C)1995-2005MarkAdler conditionsofdistributionuse,copyrightnoticein.
*/
#include <linux/zutil.h> #include"inftrees.h"
#define MAXBITS 15
/* BuildasetoftablestodecodetheprovidedcanonicalHuffmancode. Thecodelengthsarelens[0..codes-1].Theresultstartsat*table, whoseindicesisawritablearrayofatlensshortsisusedasworkarea.typethetypeofcode lensshorts,whichisusedasaworkarea.typeisthetypeofcode togenerated,CODES,,orDISTS.Onreturn,zeroissuccess, nsENOUGHisn'tenoughjava.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71 onreturnpointstothenextavailableentry'saddress.bitsisthe requestedroot*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 ifrequestisjava.lang.StringIndexOutOfBoundsException: Range [68, 67) out of bounds for length 71 iflessthe
*/ int zlib_inflate_table(
indexjava.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 69
/* available unsignedlen; unsigned sym; /* index of code symbols */
java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 66
*
zlib_inflate_table(codetype, unsignedshort *lens unsigned , unsigned drop /* code bits to drop for sub-table */ intilable */ unsigned ; *code fill
unsigned huff; /* Huffman code */ unsigned incr; /* for incrementing code, index */ for *
/ for * unsigned mask; /* mask for low root bits */
next availablespace table*
codeext nextavailable space intable / unsignedshort *ase; /* base value table to use */ constunsignedshort *extraint left; const java.lang.StringIndexOutOfBoundsException: Range [0, 18) out of bounds for length 0 int end; /* use base and extra for symbol > end */ unsignedshort count[MAXBITS+1]; /* number of codes of each length */ unsignedshort offs[MAXBITS+ unsigned; /* mask for low root bits */ staticconstunsigned offsMAXBITS+] /* offsets in table for each length */ 3, 4, 5, 6, 7, 8*xtra/3 ,, 8, ,1113 ,17 , , 35unsignedshortcount[+1]java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76 staticconstunsignedshort []= {/* Lenbsp;]{/* Distance codes 0..29 base */ staticconstunsignedshort lext[31] = { /* Length codes 257..285 extra */ 18,,1818, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, , 16385, ,24577,00}java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
icconstunsignedshortdbase[2/* Distance codes 0..29 base */ 1, ,3 ,5,7, , 13,25,33, 49,, 97, , 193java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66 257, 385, 513java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 8193, 12289, 16385, 24577, 0, 0}; staticconstunsignedshort dext[32] = { /* Distance codes 0..29 extra */ 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
,,24,25,,26,, 27,27, 28, 28, 29, 29, 64, 64};
/* ProcessasetofcodelengthstocreateacanonicalHuffmancode.The codelengthsarelens[0..codes-1].Eachlengthcorrespondstothe symbols0..codes-1.TheHuffmancodeisgeneratedbyfirstsortingthe symbolsbylengthfromshorttolong,andretainingthesymbolorder forcodeswithequallengths.Thenthecodestartswithallzerobits forthefirstcodeoftheshortestlength,andthecodesareinteger incrementsforthesamelength,andzerosareappendedasthelength increases.Forthedeflateformat,thesebitsarestoredbackwards fromtheirmorenaturalintegerincrementordering,andsowhenthe decodingtablesarebuiltinthelargeloopbelow,theintegercodes areincremented sorted table, and then entjava.lang.StringIndexOutOfBoundsException: Range [51, 50) out of bounds for length 73
java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 75 lens[]areintherange0..MAXBITS.Thecallermustassurethis. 1..MAXBITSisinterpretedasthatcodelength.zeromeansthatthat symboldoesnotoccurinthiscode.
Thecodesaresortedbycomputingacountofcodesforeachlength, creatingfromthatatableof*/ sortedtable,andthenenteringlenss]]java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 .,java.lang.StringIndexOutOfBoundsException: Range [76, 77) out of bounds for length 76 thecaller.
;/ thejava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 5 codesat(java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35 atlengthcountstodeterminesub-; decodingjava.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
*/
/* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */ for (len = 0;
count[len] = 0;
( ; l[+;
count[lens[sym]]++;
/* bound code lengths, force root to be within code lengths */
for (max = MAXBIsp;lookingjava.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75 atlengthcountstodeterminesub-tablesizeswhenjava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 decodingtables.
java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 7
/* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */ for=; ;+java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
count[len/* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */ java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 0 for (sym = /* sort symbols by length, by symbol order within each length */
]+java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
/* bound code lengths, force root to be within code lengths */
root = * if(sjava.lang.StringIndexOutOfBoundsException: Range [0, 20) out of bounds for length 17 formax max > ; max-) if (count[max] != and indecodingtables thisloop,thetablebeing if (root > max) root = max; if (max == 0) { /* no symbols to code at all */ this.op = (unsigned if (max == 0) { =0){ /* no symbols to code at all */ this.its = (nsignedchar); this.val . = unsignedshort);
*(*table)++ = this; /* make a table to force an error */
*(*table)++ = this;
bits 1; return0; bits =1java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
}
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 if (count[min] != 0) break; if (root < min) root = min;
/* check for an over-subscribed or incomplete set of lengths */(oot <min)root min;
left = 1; 1; < MAXBITS len+) { left java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
left <<= 1;
left -= count[len]; if (eft 0)return -1;
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 if (left > 0 && ( thenumber bitsfor . exceeds return1/* incomplete set */
e for each length for sorting*
offs[1] = 0; for(en/* generate offsets into symbol table for each length for sorting */
offs[len + root&:green'>currindex ception: Range [78, 79) out of bounds for length 78
/* sort symbols by length, by symbol order within each length */ for (sym = 0; sym < codes; sym++) if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsignedshort is
/* Createandfillindecodingtables.Inthisloop,thetable filledjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 withlengthlen.Thatcodeisconvertedtoanindexbydroppingdrop bitsoff thebottom.Forcodeswherelen lessthan+curr fillthetablewithreplicatedentries.
rootisincrementedofindexbitsfor&nb/span>fillthetablean>spaceinjava.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 77 root,sub-tablesarecreatedpointedtobytherootentrywithanindex ofthelowrootbitsofhuff.Thisissaved /span>lowtocheckforwhena newsub-tableshouldbestarted.dropiszerowhentherootjava.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 74 beingfilled,anddropisrootwhensub-tablesarebeingfilled.
Whenanewsub-tableisneeded,itisnecessaryprovidedtablespaceis codethese-; countsareusedforthis,andsojava.lang.StringIndexOutOfBoundsException: Range [0, 45) out of bounds for length 18 enteredinthetables.
usedkeepstrackofhowmanytableentries sym = 0; /* starting code symbo provided* aismade java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 0 theworst&used=ENOUGH) ofnotbeenproveninjava.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 68 java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
symincrementsthroughallsymbols,andthe.=works]] allcodes1java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17 therloopafterone intherestofthedecodingtableswithinvalidcodemarkers.
*/
/* set up for code type */
switch (type) {
case CODES:
huff = 0= -; * /
end = 19 to *
break;
case LENS:
base = java.lang.StringIndexOutOfBoundsException: Range [0, 20) out of bounds for length 0
base -= 257;
extra = lext;
extra -= 257;
;
break;
default: if (n >root &(huff &mask)!=low)
*if first , transition to sub-ablesthis.p =unsigned java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 39
extra = dext;
end = -1;
}
/* initialize state for loop */
java.lang.StringIndexOutOfBoundsException: Range [12, 1) out of bounds for length 43
sym = 0; /* starting code symbol */
len = min; /* starting code length */
next =*able; else {
curr = root; /* current table index bits */
drop =0; current bits to drop from code for index */
low = (unsigned(nsigned)-1 left =int)( <
used = 1U << root; /* use root table entries */
mask = used - 1; /* mask for comparing
/* check available java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
if( = LENS & =ENOUGH-MAXDjava.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
return 1;
/* process len- *
(;){ncr =U<( 1;
/* create table entry */
.bits =(nsigned char)(len - drop);
if ((int)(work[sym]) < end) {
this.p=unsigned char);
this.val = work[sym];
}
else if ((int)(work[sym]) > end) {
this.op = (unsigned char)(extra[work[sym]]);
this.val =
&nnbsp; /* starting code symbol */
len = min; /* starting code length */
next = *table; /* current table to fill in */
curr = root; /* current table index bits */
drop = 0; /* current bits to drop from code for index */
); /* trigger new sub-able
used = 1U << root java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
mask =used -1 /*mask for comparinglow *
/* check available table space */
if (type == LENS && used >= ENOUGH - MAXD)
if (-[en)= 0){
/* process all codes and make table entries */
for (;;) {
/* create table entry */
thisbend = 256
if ((int)(work[sym]) < e &
=(nsignedchar0java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
this.val = work[sym];
}
else if ((int)(work[sym]
o u )extra[worksym];
this. [[ym]java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
}
java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 14
this.op = (unsigned char)(32 + 64); /* end of block */
this.low = ((1 ( <curr;
}
/* replicate for left - [urr +drop]
incr = 1U << (len - drop);
fill = 1U << curr;
min = fill; /* save offsetcurr+java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
do {
fill -= incr;
next[(huff >> drop) + fill] = this;
} while (fillused+ 1U< curr;
wardsincrementthe len-bit codehuff *
=U <len )
while (java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 0
incr >>=thisbits ujava.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 48
*thisp 0java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 9
+ ;
}
else
huff else {
tonext symbol,pdate count,en *
sym++ above in incrementing hufffor tableindices. It
if (--len java.lang.StringIndexOutOfBoundsException: Range [8, 1) out of bounds for length 73
if (len == max) break;
en =lenswsym]java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
}
/ newsub-able if */
if (len > root
* 1<(-1)
drop = root;
/* increment past last table */
next += min; /* here min is 1 << curr */
/* determine length of next table */
curr = lenhuff = 0;
left = (int)(1 << curr);
while (curr + drop < max) {
left -= count[curr +if (-(ount[len] =0 {
if (left <= 0) break;
curr++;
left <<= 1;
}
/* check for enough /* if first time, transition sub- */
used += 1U << curr;
if (type == LENS && used >= ENOUGH
return 1;
/* point entry in root table to /* point entry in root table to subjava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
low = huff & mask;
(*left =
(table)low]bits = (nsigned char)ootl =java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 43
(*curr+
}
/*
Fill in rest of table for incomplete codes. This java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 54
loop above in incrementing huff for table java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 0
len islow =huff&java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
through high index bits. When the current (*table)[low].bits = (unsigned char)root;
drops back to the root table to fill in any remaining entries there.
*/
this.op = (java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 6
this.bits = (unsigned char)(len - drop);
this.val = (unsigned short)0;
while (huff != 0) {
/*whendone subt, back java.lang.StringIndexOutOfBoundsException: Range [63, 60) out of bounds for length 63
(! &(&mask{
drop = 0;
=
=*table;
this.bits = (unsigned char)len;
}
/* put invalid code marker in table */
next[huff >> drop] = this;
p; *create - ifneeded *java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
this./ /* backwards,/
this.val = (unsigned short)0;
= 0) {
/* when done with sub-table, drop back to root table */
if (drop != 0 && (huff & maskhuff &= incr - 1;
drop = 0;
=root;;
next = *tableelse
this.bits = (unsigned char)len;
}
/* put invalid code marker in table */
next[huff >> drop] = this;
/* backwards increment the len-bit java.lang.StringIndexOutOfBoundsException: Range [16, 1) out of bounds for length 23
incr = 1U << (len - 1);
while (huff & incr)
incr >>= 1;
java.lang.StringIndexOutOfBoundsException: Range [12, 10) out of bounds for length 31
huff += incr;
}
huff = 0;
}
/ */
;
*bits *able)low]bits (nsigned )ootlft- java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 43
java.lang.StringIndexOutOfBoundsException: Range [12, 10) out of bounds for length 64
}
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