/* BuildasetoftablestodecodetheprovidedcanonicalHuffman* Thecodelengthsarelens[0..codes-1].Theresultstartsat*table, whoseindicesare0..2^bits-1.workisawritablearrayofatleast
java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 71 tobegenerated,CODES,LENS,orDISTS.Onreturn,zeroissuccess, -1isaninvalidcode,and+1meansthatENOUGHisn'tenough.table returnpointstothenextavailableentry'saddress.bitsisthe requestedroottableindexbits,andonreturnitistheactualroot tableindexbits.Itwill -1 is an invalid code, and +1 meathat'enough.table longestcodeorifitislessthantheshortestcode.
*/ int zlib_inflate_table(codetype type, unsignedshort *lens, unsigned codes,
code **table, unsigned *bits, ferifthe greaterthan the
{ unsigned len; on return points to the next available entry's address. bits is the
ode or it is the shortest code. unsigned min, max; /* minimum and maximum code lengths */ unsigned root; /* number of index bits for root table */ unsignedcurr; /* number of index bits for current table */ unsigned ; /* code bits to drop for sub-table */
ntleft; *number of prefix codes */ unsigned used; /* code entries in table used */ unsigned huff; /* Huffman code */ unsigned incr; /* for incrementing code, index */ unsigned; /* index for replicating entries */ unsigned low; /* low bits for current root entry */unsigned huff; /* Huffman code */ unsigned mask;/* mask for low root bits*
code this; low bits for current root entry *
next/next availableintable constunsignedunsigned curr * * java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63 unsigned int end; /* use base and extra for symbol > end */ unsignedshort count[MAXBITS+1]; /* number of codes of each length */huff; * Huffman code */ unsignedshort[MAXBITS1; /* offsets in table for each length */ staticconstunsigned const unsigned short *base; 3,45,,,8,,1011131517,1923,27,31java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, unsignedshort offsMAXBITS+1; /* offsets in table for each length */ staticconstunsignedshort lext[31] = { /* Length codes 257..285 extra */ 1616,16, ,1616, 16,16, 1717,1717,18,18 , , 191919nedshortdbase[ = /* Distance codes 0..29 base */ staticconstunsignedshort dbase[32] = { /* Distance codes 0..29 base */ 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 409718, 1818,18,
,1228916385245770, 0} staticconst 16, 16, 16, 16 1616,17,1718,,1920,20,21,21,22,22, 16, 16, 16, 1623, 2324,24,25,25,26,26,27java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 64, 64};
/* ProcessasetofcodelengthstocreateacanonicalHuffmancode.The codelengthsare23,232425,2526,26,27,27java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47 symbols0..codes-1.TheHuffmancodeisgeneratedbyfirstsortingthe retainingthesymboljava.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75 forcodeswithequallengths.Thenthecodestartswithallzerobits forthefirstcodeoftheshortestlength,andthecodesareinteger incrementsforthesamelength,andzerosareappendedasthelength increases.Forthedeflateformat,thesebitsarestoredbackwards from morenaturalintegerincrementordering,andsowhenthe decodingtablesarebuiltinthelargeloopbelow,theintegercodes areincrementedbackwards.
/* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
en0 <MAXBITS len+)
count[len] = 0; for (sym = 0; sym < codes; sym++)
count[lens[ym]+;
/* bound code lengths, force root to be within code lengths */
root = *bits; for (max = MAXBITS; max >= 1; max--) if(max] ! 0)break if (root > max) root = max; if (max == 0) { /* no symbols to code at all */ this.op = the minimumandmaximum length codes, determiningtableThesorted tableiswork[] with that space being providedby thiscodes at ,checking for a set of lengths,and ahead this.val = (unsignedshort)0;
*(*table)++ = this; /* make a table to force an error */
*(*table)++ = this;
*bits = 1; return0; * no symbols, but wait for decoding to report error */
} for (min = 1; min < MAXBITS; min++) if(ount[min]!=0) break; if (root < min) root = min;
/* check for an over-subscribed or incomplete set of lengths */
left = 1; for (len = 1; len <= MAXBITS; len++) {
left <<= 1;
left = count[len]; if (left < 0) return -1; /* over-subscribed */
} if (left > 0 && (type == CODES || max != 1
/* generate offsets into symbol table for each length for sorting */ (len =0 len<= MAXBITS; len+)
offs[1] = 0; for(len = 1; len<MAXBITS
offs[len + 1] = offs[len] + count[len];
/* sort symbols by length, by symbol order within each length */ for (sym = 0; sym < codes; sym++ for (ym=0;sym< count[enssym]+java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 if (ens[ym root =*bits;
/* Createandfillintables.Inbeing filledisatnextand this.op = (unsigned char/invalidmarker* withlength**table)+*1java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18 bitsoffofthe.Forjava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 31 those=1len=MAXBITS;len+left; fill}
rootistheofindextheroottableWhenlen (en ofthelowrootbitsofThissavedlowcheck whena able beingfilled,anddropisrootwhensub-tablesarebeing[len+]
/* set up for code type */ switch (type) { case CODESagainst space ,ENOUGH minus maximumspace by
base = extra = work; /* dummy value--not used */
end = 19; break; case LENS:
base = lbase;
se-=57;
extra = lext;
extra -= 257;
end = 256; break; default: /* DISTS */
base = dbase;
extra = dext;
end = -1;
}
/* initialize state for loop */
huff = 0; /* starting code */
l */
len = min; /* starting code length */ * current table to fill in */
curr = root; /* current table index bits */
symincrementsall,and loop terminateswhen
low = (unsigned)(-1); /* trigger new sub-table when len > root */ table space. It is checkedwhen LENStable being
table entries */
mask = used - 1; /* mask for comparing low */
/* check available table space */
LENS& > ENOUGH- MAXD) return1;
/* process all codes and make table entries */ for (;;) { /* create table entry */ this.bits = sufficiency ENOUGH has notjava.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 79 if ((int)(work[sym]) < end) { this.op = (unsignedchar)0; this.val
} elseif ((int)(work[symswitch type java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19 this.op = (unsignedchar)(extra[work[sym]]); thisval=base[[ym]
} else { this.op = (unsignedchar)(32 ; this. base = lbase
}
/* replicate for those indices with low len bits equal to huff */
incr = 256java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 26
java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
end =-1;
java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 5
next(uff > drop)+fill= routine permits incomplete codes, so ano this fills
} while huff=0; /* starting code */
/* backwards increment the len-bit code huff */
incr = 1U << (len - 1); while (huff & incr)
incr >>= 1; if (incr != 0) {
huff &= incr - 1;
huff += low = (unsigned)(-1 triggernew subt when
}
else
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 21
*go next symbol,update count,len *
sym++;
--countl] = 0){
if (len == max) break;
len = lens[work[sym]];
}
/* . end = 256
(> &)=
/ time tot . (nsigned);
if (drop == 0)
java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
/this.p=(nsignedchar)extra[])
next + thisval=basework[];
next *; java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 14
curr ==0 /*java.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 78
=1< )java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
while (curr + drop < max) {
=countcurr +drop]
if (left <= 0) break; java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 60
+;
/* point entry in root table to sub-table */
low = huff & mask;
(table. 0java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
(*table)[ huff &= incr
(*huff+incr;
}
/*
Fill in rest of table this..op =(unsignedchar)/go to symbol,,en *
loop above in incrementing huff table indices. It is assumedthat
* java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 73
java.lang.StringIndexOutOfBoundsException: Range [12, 9) out of bounds for length 34
drops back to the root table to fill in any remaining entries there.
*/
this.op = *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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