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-rwxr-xr-xSource/bzip2/blocksort.c2218
-rwxr-xr-xSource/bzip2/bzlib.c1242
-rwxr-xr-xSource/bzip2/bzlib.h888
-rwxr-xr-xSource/bzip2/compress.c1338
-rwxr-xr-xSource/bzip2/decompress.c1068
-rwxr-xr-xSource/bzip2/huffman.c488
6 files changed, 3621 insertions, 3621 deletions
diff --git a/Source/bzip2/blocksort.c b/Source/bzip2/blocksort.c
index 6c2fa34..d752a1a 100755
--- a/Source/bzip2/blocksort.c
+++ b/Source/bzip2/blocksort.c
@@ -1,1109 +1,1109 @@
-/*
- * This file is a part of the bzip2 compression module for NSIS.
- *
- * Copyright and license information can be found below.
- * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
- *
- * The original zlib source code is available at
- * http://www.bzip.org/
- *
- * This modification is not compatible with the original bzip2.
- *
- * This software is provided 'as-is', without any express or implied
- * warranty.
- */
-
-#include "bzlib.h"
-
-/*-------------------------------------------------------------*/
-/*--- Block sorting machinery ---*/
-/*--- blocksort.c ---*/
-/*-------------------------------------------------------------*/
-
-/*--
- This file is a part of bzip2 and/or libbzip2, a program and
- library for lossless, block-sorting data compression.
-
- Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
- not claim that you wrote the original software. If you use this
- software in a product, an acknowledgment in the product
- documentation would be appreciated but is not required.
-
- 3. Altered source versions must be plainly marked as such, and must
- not be misrepresented as being the original software.
-
- 4. The name of the author may not be used to endorse or promote
- products derived from this software without specific prior written
- permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- 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 AUTHOR 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.
-
- Julian Seward, Cambridge, UK.
- jseward@acm.org
- bzip2/libbzip2 version 1.0 of 21 March 2000
-
- This program is based on (at least) the work of:
- Mike Burrows
- David Wheeler
- Peter Fenwick
- Alistair Moffat
- Radford Neal
- Ian H. Witten
- Robert Sedgewick
- Jon L. Bentley
-
- For more information on these sources, see the manual.
-
- To get some idea how the block sorting algorithms in this file
- work, read my paper
- On the Performance of BWT Sorting Algorithms
- in Proceedings of the IEEE Data Compression Conference 2000,
- Snowbird, Utah, USA, 27-30 March 2000. The main sort in this
- file implements the algorithm called cache in the paper.
---*/
-
-/*---------------------------------------------*/
-/*--- Fallback O(N log(N)^2) sorting ---*/
-/*--- algorithm, for repetitive blocks ---*/
-/*---------------------------------------------*/
-
-/*---------------------------------------------*/
-static void fallbackSimpleSort ( UInt32* fmap,
- UInt32* eclass,
- Int32 lo,
- Int32 hi )
-{
- Int32 i, j, tmp;
- UInt32 ec_tmp;
-
- if (lo == hi) return;
-
- if (hi - lo > 3) {
- for ( i = hi-4; i >= lo; i-- ) {
- tmp = fmap[i];
- ec_tmp = eclass[tmp];
- for ( j = i+4; j <= hi && ec_tmp > eclass[fmap[j]]; j += 4 )
- fmap[j-4] = fmap[j];
- fmap[j-4] = tmp;
- }
- }
-
- for ( i = hi-1; i >= lo; i-- ) {
- tmp = fmap[i];
- ec_tmp = eclass[tmp];
- for ( j = i+1; j <= hi && ec_tmp > eclass[fmap[j]]; j++ )
- fmap[j-1] = fmap[j];
- fmap[j-1] = tmp;
- }
-}
-
-
-/*---------------------------------------------*/
-#define fswap(zz1, zz2) \
- { Int32 zztmp = zz1; zz1 = zz2; zz2 = zztmp; }
-
-#define fvswap(zzp1, zzp2, zzn) \
-{ \
- Int32 yyp1 = (zzp1); \
- Int32 yyp2 = (zzp2); \
- Int32 yyn = (zzn); \
- while (yyn > 0) { \
- fswap(fmap[yyp1], fmap[yyp2]); \
- yyp1++; yyp2++; yyn--; \
- } \
-}
-
-
-#define fmin(a,b) ((a) < (b)) ? (a) : (b)
-
-#define fpush(lz,hz) { stackLo[sp] = lz; \
- stackHi[sp] = hz; \
- sp++; }
-
-#define fpop(lz,hz) { sp--; \
- lz = stackLo[sp]; \
- hz = stackHi[sp]; }
-
-#define FALLBACK_QSORT_SMALL_THRESH 10
-#define FALLBACK_QSORT_STACK_SIZE 100
-
-
-static
-void fallbackQSort3 ( UInt32* fmap,
- UInt32* eclass,
- Int32 loSt,
- Int32 hiSt )
-{
- Int32 unLo, unHi, ltLo, gtHi, n, m;
- Int32 sp, lo, hi;
- UInt32 med, r, r3;
- Int32 stackLo[FALLBACK_QSORT_STACK_SIZE];
- Int32 stackHi[FALLBACK_QSORT_STACK_SIZE];
-
- r = 0;
-
- sp = 0;
- fpush ( loSt, hiSt );
-
- while (sp > 0) {
-
- AssertH ( sp < FALLBACK_QSORT_STACK_SIZE, 1004 );
-
- fpop ( lo, hi );
- if (hi - lo < FALLBACK_QSORT_SMALL_THRESH) {
- fallbackSimpleSort ( fmap, eclass, lo, hi );
- continue;
- }
-
- /* Random partitioning. Median of 3 sometimes fails to
- avoid bad cases. Median of 9 seems to help but
- looks rather expensive. This too seems to work but
- is cheaper. Guidance for the magic constants
- 7621 and 32768 is taken from Sedgewick's algorithms
- book, chapter 35.
- */
- r = ((r * 7621) + 1) % 32768;
- r3 = r % 3;
- if (r3 == 0) med = eclass[fmap[lo]]; else
- if (r3 == 1) med = eclass[fmap[(lo+hi)>>1]]; else
- med = eclass[fmap[hi]];
-
- unLo = ltLo = lo;
- unHi = gtHi = hi;
-
- while (1) {
- while (1) {
- if (unLo > unHi) break;
- n = (Int32)eclass[fmap[unLo]] - (Int32)med;
- if (n == 0) {
- fswap(fmap[unLo], fmap[ltLo]);
- ltLo++; unLo++;
- continue;
- };
- if (n > 0) break;
- unLo++;
- }
- while (1) {
- if (unLo > unHi) break;
- n = (Int32)eclass[fmap[unHi]] - (Int32)med;
- if (n == 0) {
- fswap(fmap[unHi], fmap[gtHi]);
- gtHi--; unHi--;
- continue;
- };
- if (n < 0) break;
- unHi--;
- }
- if (unLo > unHi) break;
- fswap(fmap[unLo], fmap[unHi]); unLo++; unHi--;
- }
-
- AssertD ( unHi == unLo-1, "fallbackQSort3(2)" );
-
- if (gtHi < ltLo) continue;
-
- n = fmin(ltLo-lo, unLo-ltLo); fvswap(lo, unLo-n, n);
- m = fmin(hi-gtHi, gtHi-unHi); fvswap(unLo, hi-m+1, m);
-
- n = lo + unLo - ltLo - 1;
- m = hi - (gtHi - unHi) + 1;
-
- if (n - lo > hi - m) {
- fpush ( lo, n );
- fpush ( m, hi );
- } else {
- fpush ( m, hi );
- fpush ( lo, n );
- }
- }
-}
-
-#undef fmin
-#undef fpush
-#undef fpop
-#undef fswap
-#undef fvswap
-#undef FALLBACK_QSORT_SMALL_THRESH
-#undef FALLBACK_QSORT_STACK_SIZE
-
-
-/*---------------------------------------------*/
-/* Pre:
- nblock > 0
- eclass exists for [0 .. nblock-1]
- ((UChar*)eclass) [0 .. nblock-1] holds block
- ptr exists for [0 .. nblock-1]
-
- Post:
- ((UChar*)eclass) [0 .. nblock-1] holds block
- All other areas of eclass destroyed
- fmap [0 .. nblock-1] holds sorted order
- bhtab [ 0 .. 2+(nblock/32) ] destroyed
-*/
-
-#define SET_BH(zz) bhtab[(zz) >> 5] |= (1 << ((zz) & 31))
-#define CLEAR_BH(zz) bhtab[(zz) >> 5] &= ~(1 << ((zz) & 31))
-#define ISSET_BH(zz) (bhtab[(zz) >> 5] & (1 << ((zz) & 31)))
-#define WORD_BH(zz) bhtab[(zz) >> 5]
-#define UNALIGNED_BH(zz) ((zz) & 0x01f)
-
-static
-void fallbackSort ( UInt32* fmap,
- UInt32* eclass,
- UInt32* bhtab,
- Int32 nblock)
-{
- Int32 ftab[257];
- Int32 ftabCopy[256];
- Int32 H, i, j, k, l, r, cc, cc1;
- Int32 nNotDone;
- Int32 nBhtab;
- UChar* eclass8 = (UChar*)eclass;
-
- /*--
- Initial 1-char radix sort to generate
- initial fmap and initial BH bits.
- --*/
- for (i = 0; i < 257; i++) ftab[i] = 0;
- for (i = 0; i < nblock; i++) ftab[eclass8[i]]++;
- for (i = 0; i < 256; i++) ftabCopy[i] = ftab[i];
- for (i = 1; i < 257; i++) ftab[i] += ftab[i-1];
-
- for (i = 0; i < nblock; i++) {
- j = eclass8[i];
- k = ftab[j] - 1;
- ftab[j] = k;
- fmap[k] = i;
- }
-
- nBhtab = 2 + (nblock / 32);
- for (i = 0; i < nBhtab; i++) bhtab[i] = 0;
- for (i = 0; i < 256; i++) SET_BH(ftab[i]);
-
- /*--
- Inductively refine the buckets. Kind-of an
- "exponential radix sort" (!), inspired by the
- Manber-Myers suffix array construction algorithm.
- --*/
-
- /*-- set sentinel bits for block-end detection --*/
- for (i = 0; i < 32; i++) {
- SET_BH(nblock + 2*i);
- CLEAR_BH(nblock + 2*i + 1);
- }
-
- /*-- the log(N) loop --*/
- H = 1;
- while (1) {
-
- j = 0;
- for (i = 0; i < nblock; i++) {
- if (ISSET_BH(i)) j = i;
- k = fmap[i] - H; if (k < 0) k += nblock;
- eclass[k] = j;
- }
-
- nNotDone = 0;
- r = -1;
- while (1) {
-
- /*-- find the next non-singleton bucket --*/
- k = r + 1;
- while (ISSET_BH(k) && UNALIGNED_BH(k)) k++;
- if (ISSET_BH(k)) {
- while (WORD_BH(k) == 0xffffffff) k += 32;
- while (ISSET_BH(k)) k++;
- }
- l = k - 1;
- if (l >= nblock) break;
- while (!ISSET_BH(k) && UNALIGNED_BH(k)) k++;
- if (!ISSET_BH(k)) {
- while (WORD_BH(k) == 0x00000000) k += 32;
- while (!ISSET_BH(k)) k++;
- }
- r = k - 1;
- if (r >= nblock) break;
-
- /*-- now [l, r] bracket current bucket --*/
- if (r > l) {
- nNotDone += (r - l + 1);
- fallbackQSort3 ( fmap, eclass, l, r );
-
- /*-- scan bucket and generate header bits-- */
- cc = -1;
- for (i = l; i <= r; i++) {
- cc1 = eclass[fmap[i]];
- if (cc != cc1) { SET_BH(i); cc = cc1; };
- }
- }
- }
-
- H *= 2;
- if (H > nblock || nNotDone == 0) break;
- }
-
- /*--
- Reconstruct the original block in
- eclass8 [0 .. nblock-1], since the
- previous phase destroyed it.
- --*/
- j = 0;
- for (i = 0; i < nblock; i++) {
- while (ftabCopy[j] == 0) j++;
- ftabCopy[j]--;
- eclass8[fmap[i]] = (UChar)j;
- }
- AssertH ( j < 256, 1005 );
-}
-
-#undef SET_BH
-#undef CLEAR_BH
-#undef ISSET_BH
-#undef WORD_BH
-#undef UNALIGNED_BH
-
-
-/*---------------------------------------------*/
-/*--- The main, O(N^2 log(N)) sorting ---*/
-/*--- algorithm. Faster for "normal" ---*/
-/*--- non-repetitive blocks. ---*/
-/*---------------------------------------------*/
-
-/*---------------------------------------------*/
-static Bool mainGtU ( UInt32 i1,
- UInt32 i2,
- UChar* block,
- UInt16* quadrant,
- UInt32 nblock,
- Int32* budget )
-{
- Int32 k;
- UChar c1, c2;
- UInt16 s1, s2;
-
- AssertD ( i1 != i2, "mainGtU" );
- /* 1 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
- /* 2 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
- /* 3 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
- /* 4 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
- /* 5 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
- /* 6 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
- /* 7 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
- /* 8 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
- /* 9 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
- /* 10 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
- /* 11 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
- /* 12 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- i1++; i2++;
-
- k = nblock + 8;
-
- do {
- /* 1 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- s1 = quadrant[i1]; s2 = quadrant[i2];
- if (s1 != s2) return (s1 > s2);
- i1++; i2++;
- /* 2 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- s1 = quadrant[i1]; s2 = quadrant[i2];
- if (s1 != s2) return (s1 > s2);
- i1++; i2++;
- /* 3 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- s1 = quadrant[i1]; s2 = quadrant[i2];
- if (s1 != s2) return (s1 > s2);
- i1++; i2++;
- /* 4 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- s1 = quadrant[i1]; s2 = quadrant[i2];
- if (s1 != s2) return (s1 > s2);
- i1++; i2++;
- /* 5 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- s1 = quadrant[i1]; s2 = quadrant[i2];
- if (s1 != s2) return (s1 > s2);
- i1++; i2++;
- /* 6 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- s1 = quadrant[i1]; s2 = quadrant[i2];
- if (s1 != s2) return (s1 > s2);
- i1++; i2++;
- /* 7 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- s1 = quadrant[i1]; s2 = quadrant[i2];
- if (s1 != s2) return (s1 > s2);
- i1++; i2++;
- /* 8 */
- c1 = block[i1]; c2 = block[i2];
- if (c1 != c2) return (c1 > c2);
- s1 = quadrant[i1]; s2 = quadrant[i2];
- if (s1 != s2) return (s1 > s2);
- i1++; i2++;
-
- if (i1 >= nblock) i1 -= nblock;
- if (i2 >= nblock) i2 -= nblock;
-
- k -= 8;
- (*budget)--;
- }
- while (k >= 0);
-
- return False;
-}
-
-
-/*---------------------------------------------*/
-/*--
- Knuth's increments seem to work better
- than Incerpi-Sedgewick here. Possibly
- because the number of elems to sort is
- usually small, typically <= 20.
---*/
-static
-Int32 incs[14] = { 1, 4, 13, 40, 121, 364, 1093, 3280,
- 9841, 29524, 88573, 265720,
- 797161, 2391484 };
-
-static
-void mainSimpleSort ( UInt32* ptr,
- UChar* block,
- UInt16* quadrant,
- Int32 nblock,
- Int32 lo,
- Int32 hi,
- Int32 d,
- Int32* budget )
-{
- Int32 i, j, h, bigN, hp;
- UInt32 v;
-
- bigN = hi - lo + 1;
- if (bigN < 2) return;
-
- hp = 0;
- while (incs[hp] < bigN) hp++;
- hp--;
-
- for (; hp >= 0; hp--) {
- h = incs[hp];
-
- i = lo + h;
- while (True) {
-
- /*-- copy 1 --*/
- if (i > hi) break;
- v = ptr[i];
- j = i;
- while ( mainGtU (
- ptr[j-h]+d, v+d, block, quadrant, nblock, budget
- ) ) {
- ptr[j] = ptr[j-h];
- j = j - h;
- if (j <= (lo + h - 1)) break;
- }
- ptr[j] = v;
- i++;
-
- /*-- copy 2 --*/
- if (i > hi) break;
- v = ptr[i];
- j = i;
- while ( mainGtU (
- ptr[j-h]+d, v+d, block, quadrant, nblock, budget
- ) ) {
- ptr[j] = ptr[j-h];
- j = j - h;
- if (j <= (lo + h - 1)) break;
- }
- ptr[j] = v;
- i++;
-
- /*-- copy 3 --*/
- if (i > hi) break;
- v = ptr[i];
- j = i;
- while ( mainGtU (
- ptr[j-h]+d, v+d, block, quadrant, nblock, budget
- ) ) {
- ptr[j] = ptr[j-h];
- j = j - h;
- if (j <= (lo + h - 1)) break;
- }
- ptr[j] = v;
- i++;
-
- if (*budget < 0) return;
- }
- }
-}
-
-
-/*---------------------------------------------*/
-/*--
- The following is an implementation of
- an elegant 3-way quicksort for strings,
- described in a paper "Fast Algorithms for
- Sorting and Searching Strings", by Robert
- Sedgewick and Jon L. Bentley.
---*/
-
-#define mswap(zz1, zz2) \
- { Int32 zztmp = zz1; zz1 = zz2; zz2 = zztmp; }
-
-#define mvswap(zzp1, zzp2, zzn) \
-{ \
- Int32 yyp1 = (zzp1); \
- Int32 yyp2 = (zzp2); \
- Int32 yyn = (zzn); \
- while (yyn > 0) { \
- mswap(ptr[yyp1], ptr[yyp2]); \
- yyp1++; yyp2++; yyn--; \
- } \
-}
-
-static
-UChar mmed3 ( UChar a, UChar b, UChar c )
-{
- UChar t;
- if (a > b) { t = a; a = b; b = t; };
- if (b > c) {
- b = c;
- if (a > b) b = a;
- }
- return b;
-}
-
-#define mmin(a,b) ((a) < (b)) ? (a) : (b)
-
-#define mpush(lz,hz,dz) { stackLo[sp] = lz; \
- stackHi[sp] = hz; \
- stackD [sp] = dz; \
- sp++; }
-
-#define mpop(lz,hz,dz) { sp--; \
- lz = stackLo[sp]; \
- hz = stackHi[sp]; \
- dz = stackD [sp]; }
-
-
-#define mnextsize(az) (nextHi[az]-nextLo[az])
-
-#define mnextswap(az,bz) \
- { Int32 tz; \
- tz = nextLo[az]; nextLo[az] = nextLo[bz]; nextLo[bz] = tz; \
- tz = nextHi[az]; nextHi[az] = nextHi[bz]; nextHi[bz] = tz; \
- tz = nextD [az]; nextD [az] = nextD [bz]; nextD [bz] = tz; }
-
-
-#define MAIN_QSORT_SMALL_THRESH 20
-#define MAIN_QSORT_DEPTH_THRESH (BZ_N_RADIX + BZ_N_QSORT)
-#define MAIN_QSORT_STACK_SIZE 100
-
-static
-void mainQSort3 ( UInt32* ptr,
- UChar* block,
- UInt16* quadrant,
- Int32 nblock,
- Int32 loSt,
- Int32 hiSt,
- Int32 dSt,
- Int32* budget )
-{
- Int32 unLo, unHi, ltLo, gtHi, n, m, med;
- Int32 sp, lo, hi, d;
-
- Int32 stackLo[MAIN_QSORT_STACK_SIZE];
- Int32 stackHi[MAIN_QSORT_STACK_SIZE];
- Int32 stackD [MAIN_QSORT_STACK_SIZE];
-
- Int32 nextLo[3];
- Int32 nextHi[3];
- Int32 nextD [3];
-
- sp = 0;
- mpush ( loSt, hiSt, dSt );
-
- while (sp > 0) {
-
- AssertH ( sp < MAIN_QSORT_STACK_SIZE, 1001 );
-
- mpop ( lo, hi, d );
- if (hi - lo < MAIN_QSORT_SMALL_THRESH ||
- d > MAIN_QSORT_DEPTH_THRESH) {
- mainSimpleSort ( ptr, block, quadrant, nblock, lo, hi, d, budget );
- if (*budget < 0) return;
- continue;
- }
-
- med = (Int32)
- mmed3 ( block[ptr[ lo ]+d],
- block[ptr[ hi ]+d],
- block[ptr[ (lo+hi)>>1 ]+d] );
-
- unLo = ltLo = lo;
- unHi = gtHi = hi;
-
- while (True) {
- while (True) {
- if (unLo > unHi) break;
- n = ((Int32)block[ptr[unLo]+d]) - med;
- if (n == 0) {
- mswap(ptr[unLo], ptr[ltLo]);
- ltLo++; unLo++; continue;
- };
- if (n > 0) break;
- unLo++;
- }
- while (True) {
- if (unLo > unHi) break;
- n = ((Int32)block[ptr[unHi]+d]) - med;
- if (n == 0) {
- mswap(ptr[unHi], ptr[gtHi]);
- gtHi--; unHi--; continue;
- };
- if (n < 0) break;
- unHi--;
- }
- if (unLo > unHi) break;
- mswap(ptr[unLo], ptr[unHi]); unLo++; unHi--;
- }
-
- AssertD ( unHi == unLo-1, "mainQSort3(2)" );
-
- if (gtHi < ltLo) {
- mpush(lo, hi, d+1 );
- continue;
- }
-
- n = mmin(ltLo-lo, unLo-ltLo); mvswap(lo, unLo-n, n);
- m = mmin(hi-gtHi, gtHi-unHi); mvswap(unLo, hi-m+1, m);
-
- n = lo + unLo - ltLo - 1;
- m = hi - (gtHi - unHi) + 1;
-
- nextLo[0] = lo; nextHi[0] = n; nextD[0] = d;
- nextLo[1] = m; nextHi[1] = hi; nextD[1] = d;
- nextLo[2] = n+1; nextHi[2] = m-1; nextD[2] = d+1;
-
- if (mnextsize(0) < mnextsize(1)) mnextswap(0,1);
- if (mnextsize(1) < mnextsize(2)) mnextswap(1,2);
- if (mnextsize(0) < mnextsize(1)) mnextswap(0,1);
-
- AssertD (mnextsize(0) >= mnextsize(1), "mainQSort3(8)" );
- AssertD (mnextsize(1) >= mnextsize(2), "mainQSort3(9)" );
-
- mpush (nextLo[0], nextHi[0], nextD[0]);
- mpush (nextLo[1], nextHi[1], nextD[1]);
- mpush (nextLo[2], nextHi[2], nextD[2]);
- }
-}
-
-#undef mswap
-#undef mvswap
-#undef mpush
-#undef mpop
-#undef mmin
-#undef mnextsize
-#undef mnextswap
-#undef MAIN_QSORT_SMALL_THRESH
-#undef MAIN_QSORT_DEPTH_THRESH
-#undef MAIN_QSORT_STACK_SIZE
-
-
-/*---------------------------------------------*/
-/* Pre:
- nblock > N_OVERSHOOT
- block32 exists for [0 .. nblock-1 +N_OVERSHOOT]
- ((UChar*)block32) [0 .. nblock-1] holds block
- ptr exists for [0 .. nblock-1]
-
- Post:
- ((UChar*)block32) [0 .. nblock-1] holds block
- All other areas of block32 destroyed
- ftab [0 .. 65536 ] destroyed
- ptr [0 .. nblock-1] holds sorted order
- if (*budget < 0), sorting was abandoned
-*/
-
-#define BIGFREQ(b) (ftab[((b)+1) << 8] - ftab[(b) << 8])
-#define SETMASK (1 << 21)
-#define CLEARMASK (~(SETMASK))
-
-static
-void mainSort ( UInt32* ptr,
- UChar* block,
- UInt16* quadrant,
- UInt32* ftab,
- Int32 nblock,
- Int32* budget )
-{
- Int32 i, j, k, ss, sb;
- Int32 runningOrder[256];
- Bool bigDone[256];
- Int32 copyStart[256];
- Int32 copyEnd [256];
- UChar c1;
- Int32 numQSorted;
- UInt16 s;
-
- /*-- set up the 2-byte frequency table --*/
- for (i = 65536; i >= 0; i--) ftab[i] = 0;
-
- j = block[0] << 8;
- i = nblock-1;
- for (; i >= 3; i -= 4) {
- quadrant[i] = 0;
- j = (j >> 8) | ( ((UInt16)block[i]) << 8);
- ftab[j]++;
- quadrant[i-1] = 0;
- j = (j >> 8) | ( ((UInt16)block[i-1]) << 8);
- ftab[j]++;
- quadrant[i-2] = 0;
- j = (j >> 8) | ( ((UInt16)block[i-2]) << 8);
- ftab[j]++;
- quadrant[i-3] = 0;
- j = (j >> 8) | ( ((UInt16)block[i-3]) << 8);
- ftab[j]++;
- }
- for (; i >= 0; i--) {
- quadrant[i] = 0;
- j = (j >> 8) | ( ((UInt16)block[i]) << 8);
- ftab[j]++;
- }
-
- /*-- (emphasises close relationship of block & quadrant) --*/
- for (i = 0; i < BZ_N_OVERSHOOT; i++) {
- block [nblock+i] = block[i];
- quadrant[nblock+i] = 0;
- }
-
- /*-- Complete the initial radix sort --*/
- for (i = 1; i <= 65536; i++) ftab[i] += ftab[i-1];
-
- s = block[0] << 8;
- i = nblock-1;
- for (; i >= 3; i -= 4) {
- s = (s >> 8) | (block[i] << 8);
- j = ftab[s] -1;
- ftab[s] = j;
- ptr[j] = i;
- s = (s >> 8) | (block[i-1] << 8);
- j = ftab[s] -1;
- ftab[s] = j;
- ptr[j] = i-1;
- s = (s >> 8) | (block[i-2] << 8);
- j = ftab[s] -1;
- ftab[s] = j;
- ptr[j] = i-2;
- s = (s >> 8) | (block[i-3] << 8);
- j = ftab[s] -1;
- ftab[s] = j;
- ptr[j] = i-3;
- }
- for (; i >= 0; i--) {
- s = (s >> 8) | (block[i] << 8);
- j = ftab[s] -1;
- ftab[s] = j;
- ptr[j] = i;
- }
-
- /*--
- Now ftab contains the first loc of every small bucket.
- Calculate the running order, from smallest to largest
- big bucket.
- --*/
- for (i = 0; i <= 255; i++) {
- bigDone [i] = False;
- runningOrder[i] = i;
- }
-
- {
- Int32 vv;
- Int32 h = 1;
- do h = 3 * h + 1; while (h <= 256);
- do {
- h = h / 3;
- for (i = h; i <= 255; i++) {
- vv = runningOrder[i];
- j = i;
- while ( BIGFREQ(runningOrder[j-h]) > BIGFREQ(vv) ) {
- runningOrder[j] = runningOrder[j-h];
- j = j - h;
- if (j <= (h - 1)) goto zero;
- }
- zero:
- runningOrder[j] = vv;
- }
- } while (h != 1);
- }
-
- /*--
- The main sorting loop.
- --*/
-
- numQSorted = 0;
-
- for (i = 0; i <= 255; i++) {
-
- /*--
- Process big buckets, starting with the least full.
- Basically this is a 3-step process in which we call
- mainQSort3 to sort the small buckets [ss, j], but
- also make a big effort to avoid the calls if we can.
- --*/
- ss = runningOrder[i];
-
- /*--
- Step 1:
- Complete the big bucket [ss] by quicksorting
- any unsorted small buckets [ss, j], for j != ss.
- Hopefully previous pointer-scanning phases have already
- completed many of the small buckets [ss, j], so
- we don't have to sort them at all.
- --*/
- for (j = 0; j <= 255; j++) {
- if (j != ss) {
- sb = (ss << 8) + j;
- if ( ! (ftab[sb] & SETMASK) ) {
- Int32 lo = ftab[sb] & CLEARMASK;
- Int32 hi = (ftab[sb+1] & CLEARMASK) - 1;
- if (hi > lo) {
- mainQSort3 (
- ptr, block, quadrant, nblock,
- lo, hi, BZ_N_RADIX, budget
- );
- numQSorted += (hi - lo + 1);
- if (*budget < 0) return;
- }
- }
- ftab[sb] |= SETMASK;
- }
- }
-
- AssertH ( !bigDone[ss], 1006 );
-
- /*--
- Step 2:
- Now scan this big bucket [ss] so as to synthesise the
- sorted order for small buckets [t, ss] for all t,
- including, magically, the bucket [ss,ss] too.
- This will avoid doing Real Work in subsequent Step 1's.
- --*/
- {
- for (j = 0; j <= 255; j++) {
- copyStart[j] = ftab[(j << 8) + ss] & CLEARMASK;
- copyEnd [j] = (ftab[(j << 8) + ss + 1] & CLEARMASK) - 1;
- }
- for (j = ftab[ss << 8] & CLEARMASK; j < copyStart[ss]; j++) {
- k = ptr[j]-1; if (k < 0) k += nblock;
- c1 = block[k];
- if (!bigDone[c1])
- ptr[ copyStart[c1]++ ] = k;
- }
- for (j = (ftab[(ss+1) << 8] & CLEARMASK) - 1; j > copyEnd[ss]; j--) {
- k = ptr[j]-1; if (k < 0) k += nblock;
- c1 = block[k];
- if (!bigDone[c1])
- ptr[ copyEnd[c1]-- ] = k;
- }
- }
-
- AssertH ( copyStart[ss]-1 == copyEnd[ss], 1007 );
-
- for (j = 0; j <= 255; j++) ftab[(j << 8) + ss] |= SETMASK;
-
- /*--
- Step 3:
- The [ss] big bucket is now done. Record this fact,
- and update the quadrant descriptors. Remember to
- update quadrants in the overshoot area too, if
- necessary. The "if (i < 255)" test merely skips
- this updating for the last bucket processed, since
- updating for the last bucket is pointless.
-
- The quadrant array provides a way to incrementally
- cache sort orderings, as they appear, so as to
- make subsequent comparisons in fullGtU() complete
- faster. For repetitive blocks this makes a big
- difference (but not big enough to be able to avoid
- the fallback sorting mechanism, exponential radix sort).
-
- The precise meaning is: at all times:
-
- for 0 <= i < nblock and 0 <= j <= nblock
-
- if block[i] != block[j],
-
- then the relative values of quadrant[i] and
- quadrant[j] are meaningless.
-
- else {
- if quadrant[i] < quadrant[j]
- then the string starting at i lexicographically
- precedes the string starting at j
-
- else if quadrant[i] > quadrant[j]
- then the string starting at j lexicographically
- precedes the string starting at i
-
- else
- the relative ordering of the strings starting
- at i and j has not yet been determined.
- }
- --*/
- bigDone[ss] = True;
-
- if (i < 255) {
- Int32 bbStart = ftab[ss << 8] & CLEARMASK;
- Int32 bbSize = (ftab[(ss+1) << 8] & CLEARMASK) - bbStart;
- Int32 shifts = 0;
-
- while ((bbSize >> shifts) > 65534) shifts++;
-
- for (j = bbSize-1; j >= 0; j--) {
- Int32 a2update = ptr[bbStart + j];
- UInt16 qVal = (UInt16)(j >> shifts);
- quadrant[a2update] = qVal;
- if (a2update < BZ_N_OVERSHOOT)
- quadrant[a2update + nblock] = qVal;
- }
- AssertH ( ((bbSize-1) >> shifts) <= 65535, 1002 );
- }
-
- }
-}
-
-#undef BIGFREQ
-#undef SETMASK
-#undef CLEARMASK
-
-
-/*---------------------------------------------*/
-/* Pre:
- nblock > 0
- arr2 exists for [0 .. nblock-1 +N_OVERSHOOT]
- ((UChar*)arr2) [0 .. nblock-1] holds block
- arr1 exists for [0 .. nblock-1]
-
- Post:
- ((UChar*)arr2) [0 .. nblock-1] holds block
- All other areas of block destroyed
- ftab [ 0 .. 65536 ] destroyed
- arr1 [0 .. nblock-1] holds sorted order
-*/
-void BZ2_blockSort ( EState* s )
-{
- UInt32* ptr = s->ptr;
- UChar* block = s->block;
- UInt32* ftab = s->ftab;
- Int32 nblock = s->nblock;
- Int32 wfact = s->workFactor;
- UInt16* quadrant;
- Int32 budget;
- Int32 budgetInit;
- Int32 i;
-
- if (nblock < 10000) {
- fallbackSort ( s->arr1, s->arr2, ftab, nblock );
- } else {
- /* Calculate the location for quadrant, remembering to get
- the alignment right. Assumes that &(block[0]) is at least
- 2-byte aligned -- this should be ok since block is really
- the first section of arr2.
- */
- i = nblock+BZ_N_OVERSHOOT;
- if (i & 1) i++;
- quadrant = (UInt16*)(&(block[i]));
-
- /* (wfact-1) / 3 puts the default-factor-30
- transition point at very roughly the same place as
- with v0.1 and v0.9.0.
- Not that it particularly matters any more, since the
- resulting compressed stream is now the same regardless
- of whether or not we use the main sort or fallback sort.
- */
- if (wfact < 1 ) wfact = 1;
- if (wfact > 100) wfact = 100;
- budgetInit = nblock * ((wfact-1) / 3);
- budget = budgetInit;
-
- mainSort ( ptr, block, quadrant, ftab, nblock, &budget );
- if (budget < 0) {
- fallbackSort ( s->arr1, s->arr2, ftab, nblock );
- }
- }
-
- s->origPtr = -1;
- for (i = 0; i < s->nblock; i++)
- if (ptr[i] == 0)
- { s->origPtr = i; break; };
-
- AssertH( s->origPtr != -1, 1003 );
-}
-
-
-/*-------------------------------------------------------------*/
-/*--- end blocksort.c ---*/
-/*-------------------------------------------------------------*/
+/*
+ * This file is a part of the bzip2 compression module for NSIS.
+ *
+ * Copyright and license information can be found below.
+ * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
+ *
+ * The original zlib source code is available at
+ * http://www.bzip.org/
+ *
+ * This modification is not compatible with the original bzip2.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.
+ */
+
+#include "bzlib.h"
+
+/*-------------------------------------------------------------*/
+/*--- Block sorting machinery ---*/
+/*--- blocksort.c ---*/
+/*-------------------------------------------------------------*/
+
+/*--
+ This file is a part of bzip2 and/or libbzip2, a program and
+ library for lossless, block-sorting data compression.
+
+ Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
+ not claim that you wrote the original software. If you use this
+ software in a product, an acknowledgment in the product
+ documentation would be appreciated but is not required.
+
+ 3. Altered source versions must be plainly marked as such, and must
+ not be misrepresented as being the original software.
+
+ 4. The name of the author may not be used to endorse or promote
+ products derived from this software without specific prior written
+ permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ 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 AUTHOR 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.
+
+ Julian Seward, Cambridge, UK.
+ jseward@acm.org
+ bzip2/libbzip2 version 1.0 of 21 March 2000
+
+ This program is based on (at least) the work of:
+ Mike Burrows
+ David Wheeler
+ Peter Fenwick
+ Alistair Moffat
+ Radford Neal
+ Ian H. Witten
+ Robert Sedgewick
+ Jon L. Bentley
+
+ For more information on these sources, see the manual.
+
+ To get some idea how the block sorting algorithms in this file
+ work, read my paper
+ On the Performance of BWT Sorting Algorithms
+ in Proceedings of the IEEE Data Compression Conference 2000,
+ Snowbird, Utah, USA, 27-30 March 2000. The main sort in this
+ file implements the algorithm called cache in the paper.
+--*/
+
+/*---------------------------------------------*/
+/*--- Fallback O(N log(N)^2) sorting ---*/
+/*--- algorithm, for repetitive blocks ---*/
+/*---------------------------------------------*/
+
+/*---------------------------------------------*/
+static void fallbackSimpleSort ( UInt32* fmap,
+ UInt32* eclass,
+ Int32 lo,
+ Int32 hi )
+{
+ Int32 i, j, tmp;
+ UInt32 ec_tmp;
+
+ if (lo == hi) return;
+
+ if (hi - lo > 3) {
+ for ( i = hi-4; i >= lo; i-- ) {
+ tmp = fmap[i];
+ ec_tmp = eclass[tmp];
+ for ( j = i+4; j <= hi && ec_tmp > eclass[fmap[j]]; j += 4 )
+ fmap[j-4] = fmap[j];
+ fmap[j-4] = tmp;
+ }
+ }
+
+ for ( i = hi-1; i >= lo; i-- ) {
+ tmp = fmap[i];
+ ec_tmp = eclass[tmp];
+ for ( j = i+1; j <= hi && ec_tmp > eclass[fmap[j]]; j++ )
+ fmap[j-1] = fmap[j];
+ fmap[j-1] = tmp;
+ }
+}
+
+
+/*---------------------------------------------*/
+#define fswap(zz1, zz2) \
+ { Int32 zztmp = zz1; zz1 = zz2; zz2 = zztmp; }
+
+#define fvswap(zzp1, zzp2, zzn) \
+{ \
+ Int32 yyp1 = (zzp1); \
+ Int32 yyp2 = (zzp2); \
+ Int32 yyn = (zzn); \
+ while (yyn > 0) { \
+ fswap(fmap[yyp1], fmap[yyp2]); \
+ yyp1++; yyp2++; yyn--; \
+ } \
+}
+
+
+#define fmin(a,b) ((a) < (b)) ? (a) : (b)
+
+#define fpush(lz,hz) { stackLo[sp] = lz; \
+ stackHi[sp] = hz; \
+ sp++; }
+
+#define fpop(lz,hz) { sp--; \
+ lz = stackLo[sp]; \
+ hz = stackHi[sp]; }
+
+#define FALLBACK_QSORT_SMALL_THRESH 10
+#define FALLBACK_QSORT_STACK_SIZE 100
+
+
+static
+void fallbackQSort3 ( UInt32* fmap,
+ UInt32* eclass,
+ Int32 loSt,
+ Int32 hiSt )
+{
+ Int32 unLo, unHi, ltLo, gtHi, n, m;
+ Int32 sp, lo, hi;
+ UInt32 med, r, r3;
+ Int32 stackLo[FALLBACK_QSORT_STACK_SIZE];
+ Int32 stackHi[FALLBACK_QSORT_STACK_SIZE];
+
+ r = 0;
+
+ sp = 0;
+ fpush ( loSt, hiSt );
+
+ while (sp > 0) {
+
+ AssertH ( sp < FALLBACK_QSORT_STACK_SIZE, 1004 );
+
+ fpop ( lo, hi );
+ if (hi - lo < FALLBACK_QSORT_SMALL_THRESH) {
+ fallbackSimpleSort ( fmap, eclass, lo, hi );
+ continue;
+ }
+
+ /* Random partitioning. Median of 3 sometimes fails to
+ avoid bad cases. Median of 9 seems to help but
+ looks rather expensive. This too seems to work but
+ is cheaper. Guidance for the magic constants
+ 7621 and 32768 is taken from Sedgewick's algorithms
+ book, chapter 35.
+ */
+ r = ((r * 7621) + 1) % 32768;
+ r3 = r % 3;
+ if (r3 == 0) med = eclass[fmap[lo]]; else
+ if (r3 == 1) med = eclass[fmap[(lo+hi)>>1]]; else
+ med = eclass[fmap[hi]];
+
+ unLo = ltLo = lo;
+ unHi = gtHi = hi;
+
+ while (1) {
+ while (1) {
+ if (unLo > unHi) break;
+ n = (Int32)eclass[fmap[unLo]] - (Int32)med;
+ if (n == 0) {
+ fswap(fmap[unLo], fmap[ltLo]);
+ ltLo++; unLo++;
+ continue;
+ };
+ if (n > 0) break;
+ unLo++;
+ }
+ while (1) {
+ if (unLo > unHi) break;
+ n = (Int32)eclass[fmap[unHi]] - (Int32)med;
+ if (n == 0) {
+ fswap(fmap[unHi], fmap[gtHi]);
+ gtHi--; unHi--;
+ continue;
+ };
+ if (n < 0) break;
+ unHi--;
+ }
+ if (unLo > unHi) break;
+ fswap(fmap[unLo], fmap[unHi]); unLo++; unHi--;
+ }
+
+ AssertD ( unHi == unLo-1, "fallbackQSort3(2)" );
+
+ if (gtHi < ltLo) continue;
+
+ n = fmin(ltLo-lo, unLo-ltLo); fvswap(lo, unLo-n, n);
+ m = fmin(hi-gtHi, gtHi-unHi); fvswap(unLo, hi-m+1, m);
+
+ n = lo + unLo - ltLo - 1;
+ m = hi - (gtHi - unHi) + 1;
+
+ if (n - lo > hi - m) {
+ fpush ( lo, n );
+ fpush ( m, hi );
+ } else {
+ fpush ( m, hi );
+ fpush ( lo, n );
+ }
+ }
+}
+
+#undef fmin
+#undef fpush
+#undef fpop
+#undef fswap
+#undef fvswap
+#undef FALLBACK_QSORT_SMALL_THRESH
+#undef FALLBACK_QSORT_STACK_SIZE
+
+
+/*---------------------------------------------*/
+/* Pre:
+ nblock > 0
+ eclass exists for [0 .. nblock-1]
+ ((UChar*)eclass) [0 .. nblock-1] holds block
+ ptr exists for [0 .. nblock-1]
+
+ Post:
+ ((UChar*)eclass) [0 .. nblock-1] holds block
+ All other areas of eclass destroyed
+ fmap [0 .. nblock-1] holds sorted order
+ bhtab [ 0 .. 2+(nblock/32) ] destroyed
+*/
+
+#define SET_BH(zz) bhtab[(zz) >> 5] |= (1 << ((zz) & 31))
+#define CLEAR_BH(zz) bhtab[(zz) >> 5] &= ~(1 << ((zz) & 31))
+#define ISSET_BH(zz) (bhtab[(zz) >> 5] & (1 << ((zz) & 31)))
+#define WORD_BH(zz) bhtab[(zz) >> 5]
+#define UNALIGNED_BH(zz) ((zz) & 0x01f)
+
+static
+void fallbackSort ( UInt32* fmap,
+ UInt32* eclass,
+ UInt32* bhtab,
+ Int32 nblock)
+{
+ Int32 ftab[257];
+ Int32 ftabCopy[256];
+ Int32 H, i, j, k, l, r, cc, cc1;
+ Int32 nNotDone;
+ Int32 nBhtab;
+ UChar* eclass8 = (UChar*)eclass;
+
+ /*--
+ Initial 1-char radix sort to generate
+ initial fmap and initial BH bits.
+ --*/
+ for (i = 0; i < 257; i++) ftab[i] = 0;
+ for (i = 0; i < nblock; i++) ftab[eclass8[i]]++;
+ for (i = 0; i < 256; i++) ftabCopy[i] = ftab[i];
+ for (i = 1; i < 257; i++) ftab[i] += ftab[i-1];
+
+ for (i = 0; i < nblock; i++) {
+ j = eclass8[i];
+ k = ftab[j] - 1;
+ ftab[j] = k;
+ fmap[k] = i;
+ }
+
+ nBhtab = 2 + (nblock / 32);
+ for (i = 0; i < nBhtab; i++) bhtab[i] = 0;
+ for (i = 0; i < 256; i++) SET_BH(ftab[i]);
+
+ /*--
+ Inductively refine the buckets. Kind-of an
+ "exponential radix sort" (!), inspired by the
+ Manber-Myers suffix array construction algorithm.
+ --*/
+
+ /*-- set sentinel bits for block-end detection --*/
+ for (i = 0; i < 32; i++) {
+ SET_BH(nblock + 2*i);
+ CLEAR_BH(nblock + 2*i + 1);
+ }
+
+ /*-- the log(N) loop --*/
+ H = 1;
+ while (1) {
+
+ j = 0;
+ for (i = 0; i < nblock; i++) {
+ if (ISSET_BH(i)) j = i;
+ k = fmap[i] - H; if (k < 0) k += nblock;
+ eclass[k] = j;
+ }
+
+ nNotDone = 0;
+ r = -1;
+ while (1) {
+
+ /*-- find the next non-singleton bucket --*/
+ k = r + 1;
+ while (ISSET_BH(k) && UNALIGNED_BH(k)) k++;
+ if (ISSET_BH(k)) {
+ while (WORD_BH(k) == 0xffffffff) k += 32;
+ while (ISSET_BH(k)) k++;
+ }
+ l = k - 1;
+ if (l >= nblock) break;
+ while (!ISSET_BH(k) && UNALIGNED_BH(k)) k++;
+ if (!ISSET_BH(k)) {
+ while (WORD_BH(k) == 0x00000000) k += 32;
+ while (!ISSET_BH(k)) k++;
+ }
+ r = k - 1;
+ if (r >= nblock) break;
+
+ /*-- now [l, r] bracket current bucket --*/
+ if (r > l) {
+ nNotDone += (r - l + 1);
+ fallbackQSort3 ( fmap, eclass, l, r );
+
+ /*-- scan bucket and generate header bits-- */
+ cc = -1;
+ for (i = l; i <= r; i++) {
+ cc1 = eclass[fmap[i]];
+ if (cc != cc1) { SET_BH(i); cc = cc1; };
+ }
+ }
+ }
+
+ H *= 2;
+ if (H > nblock || nNotDone == 0) break;
+ }
+
+ /*--
+ Reconstruct the original block in
+ eclass8 [0 .. nblock-1], since the
+ previous phase destroyed it.
+ --*/
+ j = 0;
+ for (i = 0; i < nblock; i++) {
+ while (ftabCopy[j] == 0) j++;
+ ftabCopy[j]--;
+ eclass8[fmap[i]] = (UChar)j;
+ }
+ AssertH ( j < 256, 1005 );
+}
+
+#undef SET_BH
+#undef CLEAR_BH
+#undef ISSET_BH
+#undef WORD_BH
+#undef UNALIGNED_BH
+
+
+/*---------------------------------------------*/
+/*--- The main, O(N^2 log(N)) sorting ---*/
+/*--- algorithm. Faster for "normal" ---*/
+/*--- non-repetitive blocks. ---*/
+/*---------------------------------------------*/
+
+/*---------------------------------------------*/
+static Bool mainGtU ( UInt32 i1,
+ UInt32 i2,
+ UChar* block,
+ UInt16* quadrant,
+ UInt32 nblock,
+ Int32* budget )
+{
+ Int32 k;
+ UChar c1, c2;
+ UInt16 s1, s2;
+
+ AssertD ( i1 != i2, "mainGtU" );
+ /* 1 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+ /* 2 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+ /* 3 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+ /* 4 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+ /* 5 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+ /* 6 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+ /* 7 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+ /* 8 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+ /* 9 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+ /* 10 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+ /* 11 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+ /* 12 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ i1++; i2++;
+
+ k = nblock + 8;
+
+ do {
+ /* 1 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ s1 = quadrant[i1]; s2 = quadrant[i2];
+ if (s1 != s2) return (s1 > s2);
+ i1++; i2++;
+ /* 2 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ s1 = quadrant[i1]; s2 = quadrant[i2];
+ if (s1 != s2) return (s1 > s2);
+ i1++; i2++;
+ /* 3 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ s1 = quadrant[i1]; s2 = quadrant[i2];
+ if (s1 != s2) return (s1 > s2);
+ i1++; i2++;
+ /* 4 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ s1 = quadrant[i1]; s2 = quadrant[i2];
+ if (s1 != s2) return (s1 > s2);
+ i1++; i2++;
+ /* 5 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ s1 = quadrant[i1]; s2 = quadrant[i2];
+ if (s1 != s2) return (s1 > s2);
+ i1++; i2++;
+ /* 6 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ s1 = quadrant[i1]; s2 = quadrant[i2];
+ if (s1 != s2) return (s1 > s2);
+ i1++; i2++;
+ /* 7 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ s1 = quadrant[i1]; s2 = quadrant[i2];
+ if (s1 != s2) return (s1 > s2);
+ i1++; i2++;
+ /* 8 */
+ c1 = block[i1]; c2 = block[i2];
+ if (c1 != c2) return (c1 > c2);
+ s1 = quadrant[i1]; s2 = quadrant[i2];
+ if (s1 != s2) return (s1 > s2);
+ i1++; i2++;
+
+ if (i1 >= nblock) i1 -= nblock;
+ if (i2 >= nblock) i2 -= nblock;
+
+ k -= 8;
+ (*budget)--;
+ }
+ while (k >= 0);
+
+ return False;
+}
+
+
+/*---------------------------------------------*/
+/*--
+ Knuth's increments seem to work better
+ than Incerpi-Sedgewick here. Possibly
+ because the number of elems to sort is
+ usually small, typically <= 20.
+--*/
+static
+Int32 incs[14] = { 1, 4, 13, 40, 121, 364, 1093, 3280,
+ 9841, 29524, 88573, 265720,
+ 797161, 2391484 };
+
+static
+void mainSimpleSort ( UInt32* ptr,
+ UChar* block,
+ UInt16* quadrant,
+ Int32 nblock,
+ Int32 lo,
+ Int32 hi,
+ Int32 d,
+ Int32* budget )
+{
+ Int32 i, j, h, bigN, hp;
+ UInt32 v;
+
+ bigN = hi - lo + 1;
+ if (bigN < 2) return;
+
+ hp = 0;
+ while (incs[hp] < bigN) hp++;
+ hp--;
+
+ for (; hp >= 0; hp--) {
+ h = incs[hp];
+
+ i = lo + h;
+ while (True) {
+
+ /*-- copy 1 --*/
+ if (i > hi) break;
+ v = ptr[i];
+ j = i;
+ while ( mainGtU (
+ ptr[j-h]+d, v+d, block, quadrant, nblock, budget
+ ) ) {
+ ptr[j] = ptr[j-h];
+ j = j - h;
+ if (j <= (lo + h - 1)) break;
+ }
+ ptr[j] = v;
+ i++;
+
+ /*-- copy 2 --*/
+ if (i > hi) break;
+ v = ptr[i];
+ j = i;
+ while ( mainGtU (
+ ptr[j-h]+d, v+d, block, quadrant, nblock, budget
+ ) ) {
+ ptr[j] = ptr[j-h];
+ j = j - h;
+ if (j <= (lo + h - 1)) break;
+ }
+ ptr[j] = v;
+ i++;
+
+ /*-- copy 3 --*/
+ if (i > hi) break;
+ v = ptr[i];
+ j = i;
+ while ( mainGtU (
+ ptr[j-h]+d, v+d, block, quadrant, nblock, budget
+ ) ) {
+ ptr[j] = ptr[j-h];
+ j = j - h;
+ if (j <= (lo + h - 1)) break;
+ }
+ ptr[j] = v;
+ i++;
+
+ if (*budget < 0) return;
+ }
+ }
+}
+
+
+/*---------------------------------------------*/
+/*--
+ The following is an implementation of
+ an elegant 3-way quicksort for strings,
+ described in a paper "Fast Algorithms for
+ Sorting and Searching Strings", by Robert
+ Sedgewick and Jon L. Bentley.
+--*/
+
+#define mswap(zz1, zz2) \
+ { Int32 zztmp = zz1; zz1 = zz2; zz2 = zztmp; }
+
+#define mvswap(zzp1, zzp2, zzn) \
+{ \
+ Int32 yyp1 = (zzp1); \
+ Int32 yyp2 = (zzp2); \
+ Int32 yyn = (zzn); \
+ while (yyn > 0) { \
+ mswap(ptr[yyp1], ptr[yyp2]); \
+ yyp1++; yyp2++; yyn--; \
+ } \
+}
+
+static
+UChar mmed3 ( UChar a, UChar b, UChar c )
+{
+ UChar t;
+ if (a > b) { t = a; a = b; b = t; };
+ if (b > c) {
+ b = c;
+ if (a > b) b = a;
+ }
+ return b;
+}
+
+#define mmin(a,b) ((a) < (b)) ? (a) : (b)
+
+#define mpush(lz,hz,dz) { stackLo[sp] = lz; \
+ stackHi[sp] = hz; \
+ stackD [sp] = dz; \
+ sp++; }
+
+#define mpop(lz,hz,dz) { sp--; \
+ lz = stackLo[sp]; \
+ hz = stackHi[sp]; \
+ dz = stackD [sp]; }
+
+
+#define mnextsize(az) (nextHi[az]-nextLo[az])
+
+#define mnextswap(az,bz) \
+ { Int32 tz; \
+ tz = nextLo[az]; nextLo[az] = nextLo[bz]; nextLo[bz] = tz; \
+ tz = nextHi[az]; nextHi[az] = nextHi[bz]; nextHi[bz] = tz; \
+ tz = nextD [az]; nextD [az] = nextD [bz]; nextD [bz] = tz; }
+
+
+#define MAIN_QSORT_SMALL_THRESH 20
+#define MAIN_QSORT_DEPTH_THRESH (BZ_N_RADIX + BZ_N_QSORT)
+#define MAIN_QSORT_STACK_SIZE 100
+
+static
+void mainQSort3 ( UInt32* ptr,
+ UChar* block,
+ UInt16* quadrant,
+ Int32 nblock,
+ Int32 loSt,
+ Int32 hiSt,
+ Int32 dSt,
+ Int32* budget )
+{
+ Int32 unLo, unHi, ltLo, gtHi, n, m, med;
+ Int32 sp, lo, hi, d;
+
+ Int32 stackLo[MAIN_QSORT_STACK_SIZE];
+ Int32 stackHi[MAIN_QSORT_STACK_SIZE];
+ Int32 stackD [MAIN_QSORT_STACK_SIZE];
+
+ Int32 nextLo[3];
+ Int32 nextHi[3];
+ Int32 nextD [3];
+
+ sp = 0;
+ mpush ( loSt, hiSt, dSt );
+
+ while (sp > 0) {
+
+ AssertH ( sp < MAIN_QSORT_STACK_SIZE, 1001 );
+
+ mpop ( lo, hi, d );
+ if (hi - lo < MAIN_QSORT_SMALL_THRESH ||
+ d > MAIN_QSORT_DEPTH_THRESH) {
+ mainSimpleSort ( ptr, block, quadrant, nblock, lo, hi, d, budget );
+ if (*budget < 0) return;
+ continue;
+ }
+
+ med = (Int32)
+ mmed3 ( block[ptr[ lo ]+d],
+ block[ptr[ hi ]+d],
+ block[ptr[ (lo+hi)>>1 ]+d] );
+
+ unLo = ltLo = lo;
+ unHi = gtHi = hi;
+
+ while (True) {
+ while (True) {
+ if (unLo > unHi) break;
+ n = ((Int32)block[ptr[unLo]+d]) - med;
+ if (n == 0) {
+ mswap(ptr[unLo], ptr[ltLo]);
+ ltLo++; unLo++; continue;
+ };
+ if (n > 0) break;
+ unLo++;
+ }
+ while (True) {
+ if (unLo > unHi) break;
+ n = ((Int32)block[ptr[unHi]+d]) - med;
+ if (n == 0) {
+ mswap(ptr[unHi], ptr[gtHi]);
+ gtHi--; unHi--; continue;
+ };
+ if (n < 0) break;
+ unHi--;
+ }
+ if (unLo > unHi) break;
+ mswap(ptr[unLo], ptr[unHi]); unLo++; unHi--;
+ }
+
+ AssertD ( unHi == unLo-1, "mainQSort3(2)" );
+
+ if (gtHi < ltLo) {
+ mpush(lo, hi, d+1 );
+ continue;
+ }
+
+ n = mmin(ltLo-lo, unLo-ltLo); mvswap(lo, unLo-n, n);
+ m = mmin(hi-gtHi, gtHi-unHi); mvswap(unLo, hi-m+1, m);
+
+ n = lo + unLo - ltLo - 1;
+ m = hi - (gtHi - unHi) + 1;
+
+ nextLo[0] = lo; nextHi[0] = n; nextD[0] = d;
+ nextLo[1] = m; nextHi[1] = hi; nextD[1] = d;
+ nextLo[2] = n+1; nextHi[2] = m-1; nextD[2] = d+1;
+
+ if (mnextsize(0) < mnextsize(1)) mnextswap(0,1);
+ if (mnextsize(1) < mnextsize(2)) mnextswap(1,2);
+ if (mnextsize(0) < mnextsize(1)) mnextswap(0,1);
+
+ AssertD (mnextsize(0) >= mnextsize(1), "mainQSort3(8)" );
+ AssertD (mnextsize(1) >= mnextsize(2), "mainQSort3(9)" );
+
+ mpush (nextLo[0], nextHi[0], nextD[0]);
+ mpush (nextLo[1], nextHi[1], nextD[1]);
+ mpush (nextLo[2], nextHi[2], nextD[2]);
+ }
+}
+
+#undef mswap
+#undef mvswap
+#undef mpush
+#undef mpop
+#undef mmin
+#undef mnextsize
+#undef mnextswap
+#undef MAIN_QSORT_SMALL_THRESH
+#undef MAIN_QSORT_DEPTH_THRESH
+#undef MAIN_QSORT_STACK_SIZE
+
+
+/*---------------------------------------------*/
+/* Pre:
+ nblock > N_OVERSHOOT
+ block32 exists for [0 .. nblock-1 +N_OVERSHOOT]
+ ((UChar*)block32) [0 .. nblock-1] holds block
+ ptr exists for [0 .. nblock-1]
+
+ Post:
+ ((UChar*)block32) [0 .. nblock-1] holds block
+ All other areas of block32 destroyed
+ ftab [0 .. 65536 ] destroyed
+ ptr [0 .. nblock-1] holds sorted order
+ if (*budget < 0), sorting was abandoned
+*/
+
+#define BIGFREQ(b) (ftab[((b)+1) << 8] - ftab[(b) << 8])
+#define SETMASK (1 << 21)
+#define CLEARMASK (~(SETMASK))
+
+static
+void mainSort ( UInt32* ptr,
+ UChar* block,
+ UInt16* quadrant,
+ UInt32* ftab,
+ Int32 nblock,
+ Int32* budget )
+{
+ Int32 i, j, k, ss, sb;
+ Int32 runningOrder[256];
+ Bool bigDone[256];
+ Int32 copyStart[256];
+ Int32 copyEnd [256];
+ UChar c1;
+ Int32 numQSorted;
+ UInt16 s;
+
+ /*-- set up the 2-byte frequency table --*/
+ for (i = 65536; i >= 0; i--) ftab[i] = 0;
+
+ j = block[0] << 8;
+ i = nblock-1;
+ for (; i >= 3; i -= 4) {
+ quadrant[i] = 0;
+ j = (j >> 8) | ( ((UInt16)block[i]) << 8);
+ ftab[j]++;
+ quadrant[i-1] = 0;
+ j = (j >> 8) | ( ((UInt16)block[i-1]) << 8);
+ ftab[j]++;
+ quadrant[i-2] = 0;
+ j = (j >> 8) | ( ((UInt16)block[i-2]) << 8);
+ ftab[j]++;
+ quadrant[i-3] = 0;
+ j = (j >> 8) | ( ((UInt16)block[i-3]) << 8);
+ ftab[j]++;
+ }
+ for (; i >= 0; i--) {
+ quadrant[i] = 0;
+ j = (j >> 8) | ( ((UInt16)block[i]) << 8);
+ ftab[j]++;
+ }
+
+ /*-- (emphasises close relationship of block & quadrant) --*/
+ for (i = 0; i < BZ_N_OVERSHOOT; i++) {
+ block [nblock+i] = block[i];
+ quadrant[nblock+i] = 0;
+ }
+
+ /*-- Complete the initial radix sort --*/
+ for (i = 1; i <= 65536; i++) ftab[i] += ftab[i-1];
+
+ s = block[0] << 8;
+ i = nblock-1;
+ for (; i >= 3; i -= 4) {
+ s = (s >> 8) | (block[i] << 8);
+ j = ftab[s] -1;
+ ftab[s] = j;
+ ptr[j] = i;
+ s = (s >> 8) | (block[i-1] << 8);
+ j = ftab[s] -1;
+ ftab[s] = j;
+ ptr[j] = i-1;
+ s = (s >> 8) | (block[i-2] << 8);
+ j = ftab[s] -1;
+ ftab[s] = j;
+ ptr[j] = i-2;
+ s = (s >> 8) | (block[i-3] << 8);
+ j = ftab[s] -1;
+ ftab[s] = j;
+ ptr[j] = i-3;
+ }
+ for (; i >= 0; i--) {
+ s = (s >> 8) | (block[i] << 8);
+ j = ftab[s] -1;
+ ftab[s] = j;
+ ptr[j] = i;
+ }
+
+ /*--
+ Now ftab contains the first loc of every small bucket.
+ Calculate the running order, from smallest to largest
+ big bucket.
+ --*/
+ for (i = 0; i <= 255; i++) {
+ bigDone [i] = False;
+ runningOrder[i] = i;
+ }
+
+ {
+ Int32 vv;
+ Int32 h = 1;
+ do h = 3 * h + 1; while (h <= 256);
+ do {
+ h = h / 3;
+ for (i = h; i <= 255; i++) {
+ vv = runningOrder[i];
+ j = i;
+ while ( BIGFREQ(runningOrder[j-h]) > BIGFREQ(vv) ) {
+ runningOrder[j] = runningOrder[j-h];
+ j = j - h;
+ if (j <= (h - 1)) goto zero;
+ }
+ zero:
+ runningOrder[j] = vv;
+ }
+ } while (h != 1);
+ }
+
+ /*--
+ The main sorting loop.
+ --*/
+
+ numQSorted = 0;
+
+ for (i = 0; i <= 255; i++) {
+
+ /*--
+ Process big buckets, starting with the least full.
+ Basically this is a 3-step process in which we call
+ mainQSort3 to sort the small buckets [ss, j], but
+ also make a big effort to avoid the calls if we can.
+ --*/
+ ss = runningOrder[i];
+
+ /*--
+ Step 1:
+ Complete the big bucket [ss] by quicksorting
+ any unsorted small buckets [ss, j], for j != ss.
+ Hopefully previous pointer-scanning phases have already
+ completed many of the small buckets [ss, j], so
+ we don't have to sort them at all.
+ --*/
+ for (j = 0; j <= 255; j++) {
+ if (j != ss) {
+ sb = (ss << 8) + j;
+ if ( ! (ftab[sb] & SETMASK) ) {
+ Int32 lo = ftab[sb] & CLEARMASK;
+ Int32 hi = (ftab[sb+1] & CLEARMASK) - 1;
+ if (hi > lo) {
+ mainQSort3 (
+ ptr, block, quadrant, nblock,
+ lo, hi, BZ_N_RADIX, budget
+ );
+ numQSorted += (hi - lo + 1);
+ if (*budget < 0) return;
+ }
+ }
+ ftab[sb] |= SETMASK;
+ }
+ }
+
+ AssertH ( !bigDone[ss], 1006 );
+
+ /*--
+ Step 2:
+ Now scan this big bucket [ss] so as to synthesise the
+ sorted order for small buckets [t, ss] for all t,
+ including, magically, the bucket [ss,ss] too.
+ This will avoid doing Real Work in subsequent Step 1's.
+ --*/
+ {
+ for (j = 0; j <= 255; j++) {
+ copyStart[j] = ftab[(j << 8) + ss] & CLEARMASK;
+ copyEnd [j] = (ftab[(j << 8) + ss + 1] & CLEARMASK) - 1;
+ }
+ for (j = ftab[ss << 8] & CLEARMASK; j < copyStart[ss]; j++) {
+ k = ptr[j]-1; if (k < 0) k += nblock;
+ c1 = block[k];
+ if (!bigDone[c1])
+ ptr[ copyStart[c1]++ ] = k;
+ }
+ for (j = (ftab[(ss+1) << 8] & CLEARMASK) - 1; j > copyEnd[ss]; j--) {
+ k = ptr[j]-1; if (k < 0) k += nblock;
+ c1 = block[k];
+ if (!bigDone[c1])
+ ptr[ copyEnd[c1]-- ] = k;
+ }
+ }
+
+ AssertH ( copyStart[ss]-1 == copyEnd[ss], 1007 );
+
+ for (j = 0; j <= 255; j++) ftab[(j << 8) + ss] |= SETMASK;
+
+ /*--
+ Step 3:
+ The [ss] big bucket is now done. Record this fact,
+ and update the quadrant descriptors. Remember to
+ update quadrants in the overshoot area too, if
+ necessary. The "if (i < 255)" test merely skips
+ this updating for the last bucket processed, since
+ updating for the last bucket is pointless.
+
+ The quadrant array provides a way to incrementally
+ cache sort orderings, as they appear, so as to
+ make subsequent comparisons in fullGtU() complete
+ faster. For repetitive blocks this makes a big
+ difference (but not big enough to be able to avoid
+ the fallback sorting mechanism, exponential radix sort).
+
+ The precise meaning is: at all times:
+
+ for 0 <= i < nblock and 0 <= j <= nblock
+
+ if block[i] != block[j],
+
+ then the relative values of quadrant[i] and
+ quadrant[j] are meaningless.
+
+ else {
+ if quadrant[i] < quadrant[j]
+ then the string starting at i lexicographically
+ precedes the string starting at j
+
+ else if quadrant[i] > quadrant[j]
+ then the string starting at j lexicographically
+ precedes the string starting at i
+
+ else
+ the relative ordering of the strings starting
+ at i and j has not yet been determined.
+ }
+ --*/
+ bigDone[ss] = True;
+
+ if (i < 255) {
+ Int32 bbStart = ftab[ss << 8] & CLEARMASK;
+ Int32 bbSize = (ftab[(ss+1) << 8] & CLEARMASK) - bbStart;
+ Int32 shifts = 0;
+
+ while ((bbSize >> shifts) > 65534) shifts++;
+
+ for (j = bbSize-1; j >= 0; j--) {
+ Int32 a2update = ptr[bbStart + j];
+ UInt16 qVal = (UInt16)(j >> shifts);
+ quadrant[a2update] = qVal;
+ if (a2update < BZ_N_OVERSHOOT)
+ quadrant[a2update + nblock] = qVal;
+ }
+ AssertH ( ((bbSize-1) >> shifts) <= 65535, 1002 );
+ }
+
+ }
+}
+
+#undef BIGFREQ
+#undef SETMASK
+#undef CLEARMASK
+
+
+/*---------------------------------------------*/
+/* Pre:
+ nblock > 0
+ arr2 exists for [0 .. nblock-1 +N_OVERSHOOT]
+ ((UChar*)arr2) [0 .. nblock-1] holds block
+ arr1 exists for [0 .. nblock-1]
+
+ Post:
+ ((UChar*)arr2) [0 .. nblock-1] holds block
+ All other areas of block destroyed
+ ftab [ 0 .. 65536 ] destroyed
+ arr1 [0 .. nblock-1] holds sorted order
+*/
+void BZ2_blockSort ( EState* s )
+{
+ UInt32* ptr = s->ptr;
+ UChar* block = s->block;
+ UInt32* ftab = s->ftab;
+ Int32 nblock = s->nblock;
+ Int32 wfact = s->workFactor;
+ UInt16* quadrant;
+ Int32 budget;
+ Int32 budgetInit;
+ Int32 i;
+
+ if (nblock < 10000) {
+ fallbackSort ( s->arr1, s->arr2, ftab, nblock );
+ } else {
+ /* Calculate the location for quadrant, remembering to get
+ the alignment right. Assumes that &(block[0]) is at least
+ 2-byte aligned -- this should be ok since block is really
+ the first section of arr2.
+ */
+ i = nblock+BZ_N_OVERSHOOT;
+ if (i & 1) i++;
+ quadrant = (UInt16*)(&(block[i]));
+
+ /* (wfact-1) / 3 puts the default-factor-30
+ transition point at very roughly the same place as
+ with v0.1 and v0.9.0.
+ Not that it particularly matters any more, since the
+ resulting compressed stream is now the same regardless
+ of whether or not we use the main sort or fallback sort.
+ */
+ if (wfact < 1 ) wfact = 1;
+ if (wfact > 100) wfact = 100;
+ budgetInit = nblock * ((wfact-1) / 3);
+ budget = budgetInit;
+
+ mainSort ( ptr, block, quadrant, ftab, nblock, &budget );
+ if (budget < 0) {
+ fallbackSort ( s->arr1, s->arr2, ftab, nblock );
+ }
+ }
+
+ s->origPtr = -1;
+ for (i = 0; i < s->nblock; i++)
+ if (ptr[i] == 0)
+ { s->origPtr = i; break; };
+
+ AssertH( s->origPtr != -1, 1003 );
+}
+
+
+/*-------------------------------------------------------------*/
+/*--- end blocksort.c ---*/
+/*-------------------------------------------------------------*/
diff --git a/Source/bzip2/bzlib.c b/Source/bzip2/bzlib.c
index 4aec93a..8fba030 100755
--- a/Source/bzip2/bzlib.c
+++ b/Source/bzip2/bzlib.c
@@ -1,621 +1,621 @@
-/*
- * This file is a part of the bzip2 compression module for NSIS.
- *
- * Copyright and license information can be found below.
- * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
- *
- * The original zlib source code is available at
- * http://www.bzip.org/
- *
- * This modification is not compatible with the original bzip2.
- *
- * This software is provided 'as-is', without any express or implied
- * warranty.
- */
-
-#include "bzlib.h"
-
-/*-------------------------------------------------------------*/
-/*--- Library top-level functions. ---*/
-/*--- bzlib.c ---*/
-/*-------------------------------------------------------------*/
-
-/*--
- This file is a part of bzip2 and/or libbzip2, a program and
- library for lossless, block-sorting data compression.
-
- Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
- not claim that you wrote the original software. If you use this
- software in a product, an acknowledgment in the product
- documentation would be appreciated but is not required.
-
- 3. Altered source versions must be plainly marked as such, and must
- not be misrepresented as being the original software.
-
- 4. The name of the author may not be used to endorse or promote
- products derived from this software without specific prior written
- permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- 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 AUTHOR 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.
-
- Julian Seward, Cambridge, UK.
- jseward@acm.org
- bzip2/libbzip2 version 1.0 of 21 March 2000
-
- This program is based on (at least) the work of:
- Mike Burrows
- David Wheeler
- Peter Fenwick
- Alistair Moffat
- Radford Neal
- Ian H. Witten
- Robert Sedgewick
- Jon L. Bentley
-
- For more information on these sources, see the manual.
---*/
-
-/*--
- CHANGES
- ~~~~~~~
- 0.9.0 -- original version.
-
- 0.9.0a/b -- no changes in this file.
-
- 0.9.0c
- * made zero-length BZ_FLUSH work correctly in bzCompress().
- * fixed bzWrite/bzRead to ignore zero-length requests.
- * fixed bzread to correctly handle read requests after EOF.
- * wrong parameter order in call to bzDecompressInit in
- bzBuffToBuffDecompress. Fixed.
---*/
-#include "bzlib.h"
-
-
-/*---------------------------------------------------*/
-/*--- Compression stuff ---*/
-/*---------------------------------------------------*/
-
-
-#ifndef EXEHEAD
-
-/*---------------------------------------------------*/
-static
-void prepare_new_block ( EState* s )
-{
- Int32 i;
- s->nblock = 0;
- s->numZ = 0;
- s->state_out_pos = 0;
- for (i = 0; i < 256; i++) s->inUse[i] = False;
- s->blockNo++;
-}
-
-
-/*---------------------------------------------------*/
-static
-void init_RL ( EState* s )
-{
- s->state_in_ch = 256;
- s->state_in_len = 0;
-}
-
-
-static
-Bool isempty_RL ( EState* s )
-{
- if (s->state_in_ch < 256 && s->state_in_len > 0)
- return False; else
- return True;
-}
-
-/*---------------------------------------------------*/
-int BZ2_bzCompressInit( bz_stream* strm,
- int blockSize100k,
- int verbosity,
- int workFactor )
-{
- Int32 n;
- EState* s;
-
- if (strm == NULL ||
- workFactor < 0 || workFactor > 250)
- return BZ_PARAM_ERROR;
-
- if (workFactor == 0) workFactor = 30;
-
- s = BZALLOC( sizeof(EState) );
- if (s == NULL) return BZ_MEM_ERROR;
- s->strm = strm;
-
- s->arr1 = NULL;
- s->arr2 = NULL;
- s->ftab = NULL;
-
- n = NSIS_COMPRESS_BZIP2_LEVEL*100000;
- s->arr1 = BZALLOC( n * sizeof(UInt32) );
- s->arr2 = BZALLOC( (n+BZ_N_OVERSHOOT) * sizeof(UInt32) );
- s->ftab = BZALLOC( 65537 * sizeof(UInt32) );
-
- if (s->arr1 == NULL || s->arr2 == NULL || s->ftab == NULL) {
- BZFREE(s->arr1);
- BZFREE(s->arr2);
- BZFREE(s->ftab);
- BZFREE(s);
- return BZ_MEM_ERROR;
- }
-
- s->blockNo = 0;
- s->state = BZ_S_INPUT;
- s->mode = BZ_M_RUNNING;
- s->nblockMAX = 100000 * NSIS_COMPRESS_BZIP2_LEVEL - 19;
- s->workFactor = workFactor;
-
- s->block = (UChar*)s->arr2;
- s->mtfv = (UInt16*)s->arr1;
- s->zbits = NULL;
- s->ptr = (UInt32*)s->arr1;
-
- strm->state = s;
- init_RL ( s );
- prepare_new_block ( s );
- return BZ_OK;
-}
-
-
-/*---------------------------------------------------*/
-static
-void add_pair_to_block ( EState* s )
-{
- UChar ch = (UChar)(s->state_in_ch);
- s->inUse[s->state_in_ch] = True;
- switch (s->state_in_len) {
- case 1:
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- break;
- case 2:
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- break;
- case 3:
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- break;
- default:
- s->inUse[s->state_in_len-4] = True;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = (UChar)ch; s->nblock++;
- s->block[s->nblock] = ((UChar)(s->state_in_len-4));
- s->nblock++;
- break;
- }
-}
-
-
-/*---------------------------------------------------*/
-static
-void flush_RL ( EState* s )
-{
- if (s->state_in_ch < 256) add_pair_to_block ( s );
- init_RL ( s );
-}
-
-
-/*---------------------------------------------------*/
-#define ADD_CHAR_TO_BLOCK(zs,zchh0) \
-{ \
- UInt32 zchh = (UInt32)(zchh0); \
- /*-- fast track the common case --*/ \
- if (zchh != zs->state_in_ch && \
- zs->state_in_len == 1) { \
- UChar ch = (UChar)(zs->state_in_ch); \
- zs->inUse[zs->state_in_ch] = True; \
- zs->block[zs->nblock] = (UChar)ch; \
- zs->nblock++; \
- zs->state_in_ch = zchh; \
- } \
- else \
- /*-- general, uncommon cases --*/ \
- if (zchh != zs->state_in_ch || \
- zs->state_in_len == 255) { \
- if (zs->state_in_ch < 256) \
- add_pair_to_block ( zs ); \
- zs->state_in_ch = zchh; \
- zs->state_in_len = 1; \
- } else { \
- zs->state_in_len++; \
- } \
-}
-
-
-/*---------------------------------------------------*/
-static
-Bool copy_input_until_stop ( EState* s )
-{
- Bool progress_in = False;
-
- if (s->mode == BZ_M_RUNNING) {
-
- /*-- fast track the common case --*/
- while (True) {
- /*-- block full? --*/
- if (s->nblock >= s->nblockMAX) break;
- /*-- no input? --*/
- if (s->strm->avail_in == 0) break;
- progress_in = True;
- ADD_CHAR_TO_BLOCK ( s, (UInt32)(*((UChar*)(s->strm->next_in))) );
- s->strm->next_in++;
- s->strm->avail_in--;
- // s->strm->total_in_lo32++;
-// if (s->strm->total_in_lo32 == 0) s->strm->total_in_hi32++;
- }
-
- } else {
-
- /*-- general, uncommon case --*/
- while (True) {
- /*-- block full? --*/
- if (s->nblock >= s->nblockMAX) break;
- /*-- no input? --*/
- if (s->strm->avail_in == 0) break;
- /*-- flush/finish end? --*/
- if (s->avail_in_expect == 0) break;
- progress_in = True;
- ADD_CHAR_TO_BLOCK ( s, (UInt32)(*((UChar*)(s->strm->next_in))) );
- s->strm->next_in++;
- s->strm->avail_in--;
- // s->strm->total_in_lo32++;
-// if (s->strm->total_in_lo32 == 0) s->strm->total_in_hi32++;
- s->avail_in_expect--;
- }
- }
- return progress_in;
-}
-
-
-/*---------------------------------------------------*/
-static
-Bool copy_output_until_stop ( EState* s )
-{
- Bool progress_out = False;
-
- while (True) {
-
- /*-- no output space? --*/
- if (s->strm->avail_out == 0) break;
-
- /*-- block done? --*/
- if (s->state_out_pos >= s->numZ) break;
-
- progress_out = True;
- *(s->strm->next_out) = s->zbits[s->state_out_pos];
- s->state_out_pos++;
- s->strm->avail_out--;
- s->strm->next_out++;
-// s->strm->total_out_lo32++;
- // if (s->strm->total_out_lo32 == 0) s->strm->total_out_hi32++;
- }
-
- return progress_out;
-}
-
-
-/*---------------------------------------------------*/
-static
-Bool handle_compress ( bz_stream* strm )
-{
- Bool progress_in = False;
- Bool progress_out = False;
- EState* s = strm->state;
-
- while (True) {
-
- if (s->state == BZ_S_OUTPUT) {
- progress_out |= copy_output_until_stop ( s );
- if (s->state_out_pos < s->numZ) break;
- if (s->mode == BZ_M_FINISHING &&
- s->avail_in_expect == 0 &&
- isempty_RL(s)) break;
- prepare_new_block ( s );
- s->state = BZ_S_INPUT;
- if (s->mode == BZ_M_FLUSHING &&
- s->avail_in_expect == 0 &&
- isempty_RL(s)) break;
- }
-
- if (s->state == BZ_S_INPUT) {
- progress_in |= copy_input_until_stop ( s );
- if (s->mode != BZ_M_RUNNING && s->avail_in_expect == 0) {
- flush_RL ( s );
- BZ2_compressBlock ( s, (Bool)(s->mode == BZ_M_FINISHING) );
- s->state = BZ_S_OUTPUT;
- }
- else
- if (s->nblock >= s->nblockMAX) {
- BZ2_compressBlock ( s, False );
- s->state = BZ_S_OUTPUT;
- }
- else
- if (s->strm->avail_in == 0) {
- break;
- }
- }
-
- }
-
- return progress_in || progress_out;
-}
-
-
-/*---------------------------------------------------*/
-int BZ2_bzCompress( bz_stream *strm, int action )
-{
- Bool progress;
- EState* s;
- if (strm == NULL) return BZ_PARAM_ERROR;
- s = strm->state;
- if (s == NULL) return BZ_PARAM_ERROR;
- if (s->strm != strm) return BZ_PARAM_ERROR;
-
- preswitch:
- switch (s->mode) {
-
- case BZ_M_IDLE:
- return BZ_SEQUENCE_ERROR;
-
- case BZ_M_RUNNING:
- if (action == BZ_RUN) {
- progress = handle_compress ( strm );
- return progress ? BZ_RUN_OK : BZ_PARAM_ERROR;
- }
- else
- if (action == BZ_FLUSH) {
- s->avail_in_expect = strm->avail_in;
- s->mode = BZ_M_FLUSHING;
- goto preswitch;
- }
- else
- if (action == BZ_FINISH) {
- s->avail_in_expect = strm->avail_in;
- s->mode = BZ_M_FINISHING;
- goto preswitch;
- }
- else
- return BZ_PARAM_ERROR;
-
- case BZ_M_FLUSHING:
- if (action != BZ_FLUSH) return BZ_SEQUENCE_ERROR;
- if (s->avail_in_expect != s->strm->avail_in)
- return BZ_SEQUENCE_ERROR;
- progress = handle_compress ( strm );
- if (s->avail_in_expect > 0 || !isempty_RL(s) ||
- s->state_out_pos < s->numZ) return BZ_FLUSH_OK;
- s->mode = BZ_M_RUNNING;
- return BZ_RUN_OK;
-
- case BZ_M_FINISHING:
- if (action != BZ_FINISH) return BZ_SEQUENCE_ERROR;
- if (s->avail_in_expect != s->strm->avail_in)
- return BZ_SEQUENCE_ERROR;
- progress = handle_compress ( strm );
- if (!progress) return BZ_SEQUENCE_ERROR;
- if (s->avail_in_expect > 0 || !isempty_RL(s) ||
- s->state_out_pos < s->numZ) return BZ_FINISH_OK;
- s->mode = BZ_M_IDLE;
- return BZ_STREAM_END;
- }
- return BZ_OK; /*--not reached--*/
-}
-
-
-/*---------------------------------------------------*/
-int BZ2_bzCompressEnd( bz_stream *strm )
-{
- EState* s;
- if (strm == NULL) return BZ_PARAM_ERROR;
- s = strm->state;
- if (s == NULL) return BZ_PARAM_ERROR;
- if (s->strm != strm) return BZ_PARAM_ERROR;
-
- BZFREE(s->arr1);
- BZFREE(s->arr2);
- BZFREE(s->ftab);
- BZFREE(strm->state);
-
- strm->state = NULL;
-
- return BZ_OK;
-}
-#else // EXEHEAD
-
-#ifdef NSIS_COMPRESS_BZIP2_SMALLMODE
-/*---------------------------------------------------*/
-
-Int32 NSISCALL BZ2_indexIntoF ( Int32 indx, Int32 *cftab )
-{
- Int32 nb, na, mid;
- nb = 0;
- na = 256;
- do {
- mid = (nb + na) >> 1;
- if (indx >= cftab[mid]) nb = mid;
- else na = mid;
- } while (na - nb != 1);
- return nb;
-}
-
-
-static
-void NSISCALL unRLE_obuf_to_output_SMALL ( DState* s )
-{
- UChar k1;
- while (True) {
- /* try to finish existing run */
- while (True) {
- if (s->avail_out == 0) return;
- if (s->state_out_len == 0) break;
- *( (UChar*)(s->next_out) ) = s->state_out_ch;
- s->state_out_len--;
- s->next_out++;
- s->avail_out--;
- }
-
- /* can a new run be started? */
- if (s->nblock_used == s->save.nblock+1) return;
-
- s->state_out_len = 1;
- s->state_out_ch = s->k0;
- BZ_GET_SMALL(k1); s->nblock_used++;
- if (s->nblock_used == s->save.nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- s->state_out_len = 2;
- BZ_GET_SMALL(k1); s->nblock_used++;
- if (s->nblock_used == s->save.nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- s->state_out_len = 3;
- BZ_GET_SMALL(k1); s->nblock_used++;
- if (s->nblock_used == s->save.nblock+1) continue;
- if (k1 != s->k0) { s->k0 = k1; continue; };
-
- BZ_GET_SMALL(k1); s->nblock_used++;
- s->state_out_len = ((Int32)k1) + 4;
- BZ_GET_SMALL(s->k0); s->nblock_used++;
- }
-}
-#else//!small, fast
-static void NSISCALL unRLE_obuf_to_output_FAST ( DState* s )
-{
- UChar k1;
-
- /* restore */
- UChar c_state_out_ch = s->state_out_ch;
- Int32 c_state_out_len = s->state_out_len;
- Int32 c_nblock_used = s->nblock_used;
- Int32 c_k0 = s->k0;
- UInt32 c_tPos = s->tPos;
-
- char* cs_next_out = s->next_out;
- unsigned int cs_avail_out = s->avail_out;
- /* end restore */
-
- UInt32* c_tt = s->tt;
- Int32 s_save_nblockPP = s->save.nblock+1;
-// unsigned int total_out_lo32_old;
-
- while (True) {
-
- /* try to finish existing run */
- if (c_state_out_len > 0) {
- while (True) {
- if (cs_avail_out == 0) goto return_notr;
- if (c_state_out_len == 1) break;
- *( (UChar*)(cs_next_out) ) = c_state_out_ch;
- c_state_out_len--;
- cs_next_out++;
- cs_avail_out--;
- }
- s_state_out_len_eq_one:
- {
- if (cs_avail_out == 0) {
- c_state_out_len = 1; goto return_notr;
- };
- *( (UChar*)(cs_next_out) ) = c_state_out_ch;
- cs_next_out++;
- cs_avail_out--;
- }
- }
- /* can a new run be started? */
- if (c_nblock_used == s_save_nblockPP) {
- c_state_out_len = 0; goto return_notr;
- };
- c_state_out_ch = c_k0;
- BZ_GET_FAST_C(k1); c_nblock_used++;
- if (k1 != c_k0) {
- c_k0 = k1; goto s_state_out_len_eq_one;
- };
- if (c_nblock_used == s_save_nblockPP)
- goto s_state_out_len_eq_one;
-
- c_state_out_len = 2;
- BZ_GET_FAST_C(k1); c_nblock_used++;
- if (c_nblock_used == s_save_nblockPP) continue;
- if (k1 != c_k0) { c_k0 = k1; continue; };
-
- c_state_out_len = 3;
- BZ_GET_FAST_C(k1); c_nblock_used++;
- if (c_nblock_used == s_save_nblockPP) continue;
- if (k1 != c_k0) { c_k0 = k1; continue; };
-
- BZ_GET_FAST_C(k1); c_nblock_used++;
- c_state_out_len = ((Int32)k1) + 4;
- BZ_GET_FAST_C(c_k0); c_nblock_used++;
- }
-
- return_notr:
- s->state_out_ch = c_state_out_ch;
- s->state_out_len = c_state_out_len;
- s->nblock_used = c_nblock_used;
- s->k0 = c_k0;
- s->tPos = c_tPos;
- s->next_out = cs_next_out;
- s->avail_out = cs_avail_out;
- /* end save */
-}
-
-#endif
-
-
-/*---------------------------------------------------*/
-int NSISCALL BZ2_bzDecompress( DState *s )
-{
- while (True) {
- if (s->state == BZ_X_IDLE) return BZ_SEQUENCE_ERROR;
- if (s->state == BZ_X_OUTPUT) {
-#ifdef NSIS_COMPRESS_BZIP2_SMALLMODE
- unRLE_obuf_to_output_SMALL ( s );
-#else
- unRLE_obuf_to_output_FAST ( s );
-#endif
- if (s->nblock_used == s->save.nblock+1 && s->state_out_len == 0) {
- s->state = BZ_X_BLKHDR_1;
- } else {
- return BZ_OK;
- }
- }
- if (s->state >= BZ_X_BLKHDR_1) {
- Int32 r = BZ2_decompress ( s );
- if (r == BZ_STREAM_END) {
- return r;
- }
- if (s->state != BZ_X_OUTPUT) return r;
- }
- }
-}
-
-
-
-#endif
+/*
+ * This file is a part of the bzip2 compression module for NSIS.
+ *
+ * Copyright and license information can be found below.
+ * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
+ *
+ * The original zlib source code is available at
+ * http://www.bzip.org/
+ *
+ * This modification is not compatible with the original bzip2.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.
+ */
+
+#include "bzlib.h"
+
+/*-------------------------------------------------------------*/
+/*--- Library top-level functions. ---*/
+/*--- bzlib.c ---*/
+/*-------------------------------------------------------------*/
+
+/*--
+ This file is a part of bzip2 and/or libbzip2, a program and
+ library for lossless, block-sorting data compression.
+
+ Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
+ not claim that you wrote the original software. If you use this
+ software in a product, an acknowledgment in the product
+ documentation would be appreciated but is not required.
+
+ 3. Altered source versions must be plainly marked as such, and must
+ not be misrepresented as being the original software.
+
+ 4. The name of the author may not be used to endorse or promote
+ products derived from this software without specific prior written
+ permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ 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 AUTHOR 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.
+
+ Julian Seward, Cambridge, UK.
+ jseward@acm.org
+ bzip2/libbzip2 version 1.0 of 21 March 2000
+
+ This program is based on (at least) the work of:
+ Mike Burrows
+ David Wheeler
+ Peter Fenwick
+ Alistair Moffat
+ Radford Neal
+ Ian H. Witten
+ Robert Sedgewick
+ Jon L. Bentley
+
+ For more information on these sources, see the manual.
+--*/
+
+/*--
+ CHANGES
+ ~~~~~~~
+ 0.9.0 -- original version.
+
+ 0.9.0a/b -- no changes in this file.
+
+ 0.9.0c
+ * made zero-length BZ_FLUSH work correctly in bzCompress().
+ * fixed bzWrite/bzRead to ignore zero-length requests.
+ * fixed bzread to correctly handle read requests after EOF.
+ * wrong parameter order in call to bzDecompressInit in
+ bzBuffToBuffDecompress. Fixed.
+--*/
+#include "bzlib.h"
+
+
+/*---------------------------------------------------*/
+/*--- Compression stuff ---*/
+/*---------------------------------------------------*/
+
+
+#ifndef EXEHEAD
+
+/*---------------------------------------------------*/
+static
+void prepare_new_block ( EState* s )
+{
+ Int32 i;
+ s->nblock = 0;
+ s->numZ = 0;
+ s->state_out_pos = 0;
+ for (i = 0; i < 256; i++) s->inUse[i] = False;
+ s->blockNo++;
+}
+
+
+/*---------------------------------------------------*/
+static
+void init_RL ( EState* s )
+{
+ s->state_in_ch = 256;
+ s->state_in_len = 0;
+}
+
+
+static
+Bool isempty_RL ( EState* s )
+{
+ if (s->state_in_ch < 256 && s->state_in_len > 0)
+ return False; else
+ return True;
+}
+
+/*---------------------------------------------------*/
+int BZ2_bzCompressInit( bz_stream* strm,
+ int blockSize100k,
+ int verbosity,
+ int workFactor )
+{
+ Int32 n;
+ EState* s;
+
+ if (strm == NULL ||
+ workFactor < 0 || workFactor > 250)
+ return BZ_PARAM_ERROR;
+
+ if (workFactor == 0) workFactor = 30;
+
+ s = BZALLOC( sizeof(EState) );
+ if (s == NULL) return BZ_MEM_ERROR;
+ s->strm = strm;
+
+ s->arr1 = NULL;
+ s->arr2 = NULL;
+ s->ftab = NULL;
+
+ n = NSIS_COMPRESS_BZIP2_LEVEL*100000;
+ s->arr1 = BZALLOC( n * sizeof(UInt32) );
+ s->arr2 = BZALLOC( (n+BZ_N_OVERSHOOT) * sizeof(UInt32) );
+ s->ftab = BZALLOC( 65537 * sizeof(UInt32) );
+
+ if (s->arr1 == NULL || s->arr2 == NULL || s->ftab == NULL) {
+ BZFREE(s->arr1);
+ BZFREE(s->arr2);
+ BZFREE(s->ftab);
+ BZFREE(s);
+ return BZ_MEM_ERROR;
+ }
+
+ s->blockNo = 0;
+ s->state = BZ_S_INPUT;
+ s->mode = BZ_M_RUNNING;
+ s->nblockMAX = 100000 * NSIS_COMPRESS_BZIP2_LEVEL - 19;
+ s->workFactor = workFactor;
+
+ s->block = (UChar*)s->arr2;
+ s->mtfv = (UInt16*)s->arr1;
+ s->zbits = NULL;
+ s->ptr = (UInt32*)s->arr1;
+
+ strm->state = s;
+ init_RL ( s );
+ prepare_new_block ( s );
+ return BZ_OK;
+}
+
+
+/*---------------------------------------------------*/
+static
+void add_pair_to_block ( EState* s )
+{
+ UChar ch = (UChar)(s->state_in_ch);
+ s->inUse[s->state_in_ch] = True;
+ switch (s->state_in_len) {
+ case 1:
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ break;
+ case 2:
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ break;
+ case 3:
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ break;
+ default:
+ s->inUse[s->state_in_len-4] = True;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = ((UChar)(s->state_in_len-4));
+ s->nblock++;
+ break;
+ }
+}
+
+
+/*---------------------------------------------------*/
+static
+void flush_RL ( EState* s )
+{
+ if (s->state_in_ch < 256) add_pair_to_block ( s );
+ init_RL ( s );
+}
+
+
+/*---------------------------------------------------*/
+#define ADD_CHAR_TO_BLOCK(zs,zchh0) \
+{ \
+ UInt32 zchh = (UInt32)(zchh0); \
+ /*-- fast track the common case --*/ \
+ if (zchh != zs->state_in_ch && \
+ zs->state_in_len == 1) { \
+ UChar ch = (UChar)(zs->state_in_ch); \
+ zs->inUse[zs->state_in_ch] = True; \
+ zs->block[zs->nblock] = (UChar)ch; \
+ zs->nblock++; \
+ zs->state_in_ch = zchh; \
+ } \
+ else \
+ /*-- general, uncommon cases --*/ \
+ if (zchh != zs->state_in_ch || \
+ zs->state_in_len == 255) { \
+ if (zs->state_in_ch < 256) \
+ add_pair_to_block ( zs ); \
+ zs->state_in_ch = zchh; \
+ zs->state_in_len = 1; \
+ } else { \
+ zs->state_in_len++; \
+ } \
+}
+
+
+/*---------------------------------------------------*/
+static
+Bool copy_input_until_stop ( EState* s )
+{
+ Bool progress_in = False;
+
+ if (s->mode == BZ_M_RUNNING) {
+
+ /*-- fast track the common case --*/
+ while (True) {
+ /*-- block full? --*/
+ if (s->nblock >= s->nblockMAX) break;
+ /*-- no input? --*/
+ if (s->strm->avail_in == 0) break;
+ progress_in = True;
+ ADD_CHAR_TO_BLOCK ( s, (UInt32)(*((UChar*)(s->strm->next_in))) );
+ s->strm->next_in++;
+ s->strm->avail_in--;
+ // s->strm->total_in_lo32++;
+// if (s->strm->total_in_lo32 == 0) s->strm->total_in_hi32++;
+ }
+
+ } else {
+
+ /*-- general, uncommon case --*/
+ while (True) {
+ /*-- block full? --*/
+ if (s->nblock >= s->nblockMAX) break;
+ /*-- no input? --*/
+ if (s->strm->avail_in == 0) break;
+ /*-- flush/finish end? --*/
+ if (s->avail_in_expect == 0) break;
+ progress_in = True;
+ ADD_CHAR_TO_BLOCK ( s, (UInt32)(*((UChar*)(s->strm->next_in))) );
+ s->strm->next_in++;
+ s->strm->avail_in--;
+ // s->strm->total_in_lo32++;
+// if (s->strm->total_in_lo32 == 0) s->strm->total_in_hi32++;
+ s->avail_in_expect--;
+ }
+ }
+ return progress_in;
+}
+
+
+/*---------------------------------------------------*/
+static
+Bool copy_output_until_stop ( EState* s )
+{
+ Bool progress_out = False;
+
+ while (True) {
+
+ /*-- no output space? --*/
+ if (s->strm->avail_out == 0) break;
+
+ /*-- block done? --*/
+ if (s->state_out_pos >= s->numZ) break;
+
+ progress_out = True;
+ *(s->strm->next_out) = s->zbits[s->state_out_pos];
+ s->state_out_pos++;
+ s->strm->avail_out--;
+ s->strm->next_out++;
+// s->strm->total_out_lo32++;
+ // if (s->strm->total_out_lo32 == 0) s->strm->total_out_hi32++;
+ }
+
+ return progress_out;
+}
+
+
+/*---------------------------------------------------*/
+static
+Bool handle_compress ( bz_stream* strm )
+{
+ Bool progress_in = False;
+ Bool progress_out = False;
+ EState* s = strm->state;
+
+ while (True) {
+
+ if (s->state == BZ_S_OUTPUT) {
+ progress_out |= copy_output_until_stop ( s );
+ if (s->state_out_pos < s->numZ) break;
+ if (s->mode == BZ_M_FINISHING &&
+ s->avail_in_expect == 0 &&
+ isempty_RL(s)) break;
+ prepare_new_block ( s );
+ s->state = BZ_S_INPUT;
+ if (s->mode == BZ_M_FLUSHING &&
+ s->avail_in_expect == 0 &&
+ isempty_RL(s)) break;
+ }
+
+ if (s->state == BZ_S_INPUT) {
+ progress_in |= copy_input_until_stop ( s );
+ if (s->mode != BZ_M_RUNNING && s->avail_in_expect == 0) {
+ flush_RL ( s );
+ BZ2_compressBlock ( s, (Bool)(s->mode == BZ_M_FINISHING) );
+ s->state = BZ_S_OUTPUT;
+ }
+ else
+ if (s->nblock >= s->nblockMAX) {
+ BZ2_compressBlock ( s, False );
+ s->state = BZ_S_OUTPUT;
+ }
+ else
+ if (s->strm->avail_in == 0) {
+ break;
+ }
+ }
+
+ }
+
+ return progress_in || progress_out;
+}
+
+
+/*---------------------------------------------------*/
+int BZ2_bzCompress( bz_stream *strm, int action )
+{
+ Bool progress;
+ EState* s;
+ if (strm == NULL) return BZ_PARAM_ERROR;
+ s = strm->state;
+ if (s == NULL) return BZ_PARAM_ERROR;
+ if (s->strm != strm) return BZ_PARAM_ERROR;
+
+ preswitch:
+ switch (s->mode) {
+
+ case BZ_M_IDLE:
+ return BZ_SEQUENCE_ERROR;
+
+ case BZ_M_RUNNING:
+ if (action == BZ_RUN) {
+ progress = handle_compress ( strm );
+ return progress ? BZ_RUN_OK : BZ_PARAM_ERROR;
+ }
+ else
+ if (action == BZ_FLUSH) {
+ s->avail_in_expect = strm->avail_in;
+ s->mode = BZ_M_FLUSHING;
+ goto preswitch;
+ }
+ else
+ if (action == BZ_FINISH) {
+ s->avail_in_expect = strm->avail_in;
+ s->mode = BZ_M_FINISHING;
+ goto preswitch;
+ }
+ else
+ return BZ_PARAM_ERROR;
+
+ case BZ_M_FLUSHING:
+ if (action != BZ_FLUSH) return BZ_SEQUENCE_ERROR;
+ if (s->avail_in_expect != s->strm->avail_in)
+ return BZ_SEQUENCE_ERROR;
+ progress = handle_compress ( strm );
+ if (s->avail_in_expect > 0 || !isempty_RL(s) ||
+ s->state_out_pos < s->numZ) return BZ_FLUSH_OK;
+ s->mode = BZ_M_RUNNING;
+ return BZ_RUN_OK;
+
+ case BZ_M_FINISHING:
+ if (action != BZ_FINISH) return BZ_SEQUENCE_ERROR;
+ if (s->avail_in_expect != s->strm->avail_in)
+ return BZ_SEQUENCE_ERROR;
+ progress = handle_compress ( strm );
+ if (!progress) return BZ_SEQUENCE_ERROR;
+ if (s->avail_in_expect > 0 || !isempty_RL(s) ||
+ s->state_out_pos < s->numZ) return BZ_FINISH_OK;
+ s->mode = BZ_M_IDLE;
+ return BZ_STREAM_END;
+ }
+ return BZ_OK; /*--not reached--*/
+}
+
+
+/*---------------------------------------------------*/
+int BZ2_bzCompressEnd( bz_stream *strm )
+{
+ EState* s;
+ if (strm == NULL) return BZ_PARAM_ERROR;
+ s = strm->state;
+ if (s == NULL) return BZ_PARAM_ERROR;
+ if (s->strm != strm) return BZ_PARAM_ERROR;
+
+ BZFREE(s->arr1);
+ BZFREE(s->arr2);
+ BZFREE(s->ftab);
+ BZFREE(strm->state);
+
+ strm->state = NULL;
+
+ return BZ_OK;
+}
+#else // EXEHEAD
+
+#ifdef NSIS_COMPRESS_BZIP2_SMALLMODE
+/*---------------------------------------------------*/
+
+Int32 NSISCALL BZ2_indexIntoF ( Int32 indx, Int32 *cftab )
+{
+ Int32 nb, na, mid;
+ nb = 0;
+ na = 256;
+ do {
+ mid = (nb + na) >> 1;
+ if (indx >= cftab[mid]) nb = mid;
+ else na = mid;
+ } while (na - nb != 1);
+ return nb;
+}
+
+
+static
+void NSISCALL unRLE_obuf_to_output_SMALL ( DState* s )
+{
+ UChar k1;
+ while (True) {
+ /* try to finish existing run */
+ while (True) {
+ if (s->avail_out == 0) return;
+ if (s->state_out_len == 0) break;
+ *( (UChar*)(s->next_out) ) = s->state_out_ch;
+ s->state_out_len--;
+ s->next_out++;
+ s->avail_out--;
+ }
+
+ /* can a new run be started? */
+ if (s->nblock_used == s->save.nblock+1) return;
+
+ s->state_out_len = 1;
+ s->state_out_ch = s->k0;
+ BZ_GET_SMALL(k1); s->nblock_used++;
+ if (s->nblock_used == s->save.nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ s->state_out_len = 2;
+ BZ_GET_SMALL(k1); s->nblock_used++;
+ if (s->nblock_used == s->save.nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ s->state_out_len = 3;
+ BZ_GET_SMALL(k1); s->nblock_used++;
+ if (s->nblock_used == s->save.nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ BZ_GET_SMALL(k1); s->nblock_used++;
+ s->state_out_len = ((Int32)k1) + 4;
+ BZ_GET_SMALL(s->k0); s->nblock_used++;
+ }
+}
+#else//!small, fast
+static void NSISCALL unRLE_obuf_to_output_FAST ( DState* s )
+{
+ UChar k1;
+
+ /* restore */
+ UChar c_state_out_ch = s->state_out_ch;
+ Int32 c_state_out_len = s->state_out_len;
+ Int32 c_nblock_used = s->nblock_used;
+ Int32 c_k0 = s->k0;
+ UInt32 c_tPos = s->tPos;
+
+ char* cs_next_out = s->next_out;
+ unsigned int cs_avail_out = s->avail_out;
+ /* end restore */
+
+ UInt32* c_tt = s->tt;
+ Int32 s_save_nblockPP = s->save.nblock+1;
+// unsigned int total_out_lo32_old;
+
+ while (True) {
+
+ /* try to finish existing run */
+ if (c_state_out_len > 0) {
+ while (True) {
+ if (cs_avail_out == 0) goto return_notr;
+ if (c_state_out_len == 1) break;
+ *( (UChar*)(cs_next_out) ) = c_state_out_ch;
+ c_state_out_len--;
+ cs_next_out++;
+ cs_avail_out--;
+ }
+ s_state_out_len_eq_one:
+ {
+ if (cs_avail_out == 0) {
+ c_state_out_len = 1; goto return_notr;
+ };
+ *( (UChar*)(cs_next_out) ) = c_state_out_ch;
+ cs_next_out++;
+ cs_avail_out--;
+ }
+ }
+ /* can a new run be started? */
+ if (c_nblock_used == s_save_nblockPP) {
+ c_state_out_len = 0; goto return_notr;
+ };
+ c_state_out_ch = c_k0;
+ BZ_GET_FAST_C(k1); c_nblock_used++;
+ if (k1 != c_k0) {
+ c_k0 = k1; goto s_state_out_len_eq_one;
+ };
+ if (c_nblock_used == s_save_nblockPP)
+ goto s_state_out_len_eq_one;
+
+ c_state_out_len = 2;
+ BZ_GET_FAST_C(k1); c_nblock_used++;
+ if (c_nblock_used == s_save_nblockPP) continue;
+ if (k1 != c_k0) { c_k0 = k1; continue; };
+
+ c_state_out_len = 3;
+ BZ_GET_FAST_C(k1); c_nblock_used++;
+ if (c_nblock_used == s_save_nblockPP) continue;
+ if (k1 != c_k0) { c_k0 = k1; continue; };
+
+ BZ_GET_FAST_C(k1); c_nblock_used++;
+ c_state_out_len = ((Int32)k1) + 4;
+ BZ_GET_FAST_C(c_k0); c_nblock_used++;
+ }
+
+ return_notr:
+ s->state_out_ch = c_state_out_ch;
+ s->state_out_len = c_state_out_len;
+ s->nblock_used = c_nblock_used;
+ s->k0 = c_k0;
+ s->tPos = c_tPos;
+ s->next_out = cs_next_out;
+ s->avail_out = cs_avail_out;
+ /* end save */
+}
+
+#endif
+
+
+/*---------------------------------------------------*/
+int NSISCALL BZ2_bzDecompress( DState *s )
+{
+ while (True) {
+ if (s->state == BZ_X_IDLE) return BZ_SEQUENCE_ERROR;
+ if (s->state == BZ_X_OUTPUT) {
+#ifdef NSIS_COMPRESS_BZIP2_SMALLMODE
+ unRLE_obuf_to_output_SMALL ( s );
+#else
+ unRLE_obuf_to_output_FAST ( s );
+#endif
+ if (s->nblock_used == s->save.nblock+1 && s->state_out_len == 0) {
+ s->state = BZ_X_BLKHDR_1;
+ } else {
+ return BZ_OK;
+ }
+ }
+ if (s->state >= BZ_X_BLKHDR_1) {
+ Int32 r = BZ2_decompress ( s );
+ if (r == BZ_STREAM_END) {
+ return r;
+ }
+ if (s->state != BZ_X_OUTPUT) return r;
+ }
+ }
+}
+
+
+
+#endif
diff --git a/Source/bzip2/bzlib.h b/Source/bzip2/bzlib.h
index 2554364..c5a5c37 100755
--- a/Source/bzip2/bzlib.h
+++ b/Source/bzip2/bzlib.h
@@ -1,444 +1,444 @@
-/*
- * This file is a part of the bzip2 compression module for NSIS.
- *
- * Copyright and license information can be found below.
- * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
- *
- * The original zlib source code is available at
- * http://www.bzip.org/
- *
- * This modification is not compatible with the original bzip2.
- *
- * This software is provided 'as-is', without any express or implied
- * warranty.
- */
-
-/*-------------------------------------------------------------*/
-/*--- Public header file for the library. ---*/
-/*--- bzlib.h ---*/
-/*-------------------------------------------------------------*/
-
-/*--
- This file is a part of bzip2 and/or libbzip2, a program and
- library for lossless, block-sorting data compression.
-
- Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
- not claim that you wrote the original software. If you use this
- software in a product, an acknowledgment in the product
- documentation would be appreciated but is not required.
-
- 3. Altered source versions must be plainly marked as such, and must
- not be misrepresented as being the original software.
-
- 4. The name of the author may not be used to endorse or promote
- products derived from this software without specific prior written
- permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- 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 AUTHOR 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.
-
- Julian Seward, Cambridge, UK.
- jseward@acm.org
- bzip2/libbzip2 version 1.0 of 21 March 2000
-
- This program is based on (at least) the work of:
- Mike Burrows
- David Wheeler
- Peter Fenwick
- Alistair Moffat
- Radford Neal
- Ian H. Witten
- Robert Sedgewick
- Jon L. Bentley
-
- For more information on these sources, see the manual.
---*/
-
-
-#ifndef _BZLIB_H
-#define _BZLIB_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include "../exehead/config.h"
-#include "../Platform.h"
-
-#define BZ_RUN 0
-#define BZ_FLUSH 1
-#define BZ_FINISH 2
-
-#define BZ_OK 0
-#define BZ_RUN_OK 1
-#define BZ_FLUSH_OK 2
-#define BZ_FINISH_OK 3
-#define BZ_STREAM_END 4
-#define BZ_SEQUENCE_ERROR (-1)
-#define BZ_PARAM_ERROR (-2)
-#define BZ_MEM_ERROR (-3)
-#define BZ_DATA_ERROR (-4)
-#define BZ_DATA_ERROR_MAGIC (-5)
-#define BZ_IO_ERROR (-6)
-#define BZ_UNEXPECTED_EOF (-7)
-#define BZ_OUTBUFF_FULL (-8)
-#define BZ_CONFIG_ERROR (-9)
-
-/*-- Constants for the back end. --*/
-
-#define BZ_MAX_ALPHA_SIZE 258
-#define BZ_MAX_CODE_LEN 23
-
-#define BZ_RUNA 0
-#define BZ_RUNB 1
-
-#define BZ_N_GROUPS 6
-#define BZ_G_SIZE 50
-#define BZ_N_ITERS 4
-
-#define BZ_MAX_SELECTORS (2 + (900000 / BZ_G_SIZE))
-
-typedef char Char;
-typedef unsigned char Bool;
-typedef unsigned char UChar;
-typedef int Int32;
-typedef unsigned int UInt32;
-typedef short Int16;
-typedef unsigned short UInt16;
-
-#define True ((Bool)1)
-#define False ((Bool)0)
-
-#define AssertD(cond,msg) /* */
-#define AssertH(cond,errcode) /* */
-#define AssertD(cond,msg) /* */
-#define VPrintf0(zf) /* */
-#define VPrintf1(zf,za1) /* */
-#define VPrintf2(zf,za1,za2) /* */
-#define VPrintf3(zf,za1,za2,za3) /* */
-#define VPrintf4(zf,za1,za2,za3,za4) /* */
-#define VPrintf5(zf,za1,za2,za3,za4,za5) /* */
-
-#ifndef EXEHEAD
-
-#define BZALLOC(items) malloc(items)
-#define BZFREE(addr) { if (addr) free(addr); }
-#define mini_memcpy memcpy
-
-typedef struct {
- char *next_in;
- unsigned int avail_in;
-
- char *next_out;
- unsigned int avail_out;
-
- void *state;
-} bz_stream;
-
-/*-- Core (low-level) library functions --*/
-
-extern int BZ2_bzCompressInit(
- bz_stream* strm,
- int blockSize100k,
- int verbosity,
- int workFactor
- );
-
-extern int BZ2_bzCompress( bz_stream* strm, int action );
-extern int BZ2_bzCompressEnd(bz_stream* strm );
-
-/*-- States and modes for compression. --*/
-
-#define BZ_M_IDLE 1
-#define BZ_M_RUNNING 2
-#define BZ_M_FLUSHING 3
-#define BZ_M_FINISHING 4
-
-#define BZ_S_OUTPUT 1
-#define BZ_S_INPUT 2
-
-#define BZ_N_RADIX 2
-#define BZ_N_QSORT 12
-#define BZ_N_SHELL 18
-#define BZ_N_OVERSHOOT (BZ_N_RADIX + BZ_N_QSORT + BZ_N_SHELL + 2)
-
-/*-- Structure holding all the compression-side stuff. --*/
-
-typedef struct {
- /* pointer back to the struct bz_stream */
- bz_stream *strm;
-
- /* mode this stream is in, and whether inputting */
- /* or outputting data */
- Int32 mode;
- Int32 state;
-
- /* remembers avail_in when flush/finish requested */
- UInt32 avail_in_expect;
-
- /* for doing the block sorting */
- UInt32* arr1;
- UInt32* arr2;
- UInt32* ftab;
- Int32 origPtr;
-
- /* aliases for arr1 and arr2 */
- UInt32* ptr;
- UChar* block;
- UInt16* mtfv;
- UChar* zbits;
-
- /* for deciding when to use the fallback sorting algorithm */
- Int32 workFactor;
-
- /* run-length-encoding of the input */
- UInt32 state_in_ch;
- Int32 state_in_len;
-
- /* input and output limits and current posns */
- Int32 nblock;
- Int32 nblockMAX;
- Int32 numZ;
- Int32 state_out_pos;
-
- /* map of bytes used in block */
- Int32 nInUse;
- Bool inUse[256];
- UChar unseqToSeq[256];
-
- /* the buffer for bit stream creation */
- UInt32 bsBuff;
- Int32 bsLive;
-
- /* misc administratium */
- Int32 blockNo;
-
- /* stuff for coding the MTF values */
- Int32 nMTF;
- Int32 mtfFreq [BZ_MAX_ALPHA_SIZE];
- UChar selector [BZ_MAX_SELECTORS];
- UChar selectorMtf[BZ_MAX_SELECTORS];
-
- UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
- Int32 code [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
- Int32 rfreq [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
- /* second dimension: only 3 needed; 4 makes index calculations faster */
- UInt32 len_pack[BZ_MAX_ALPHA_SIZE][4];
-
-} EState;
-
-
-
-/*-- externs for compression. --*/
-
-extern void BZ2_blockSort ( EState* );
-extern void BZ2_compressBlock ( EState*, Bool );
-extern void BZ2_bsInitWrite ( EState* );
-extern void BZ2_hbAssignCodes ( Int32*, UChar*, Int32, Int32, Int32 );
-extern void BZ2_hbMakeCodeLengths ( UChar*, Int32*, Int32, Int32 );
-
-#else//EXEHEAD
-
-/*-- states for decompression. --*/
-
-#define BZ_X_IDLE 1
-#define BZ_X_OUTPUT 2
-
-#define BZ_X_BLKHDR_1 11
-#define BZ_X_RANDBIT 12
-#define BZ_X_ORIGPTR_1 13
-#define BZ_X_ORIGPTR_2 14
-#define BZ_X_ORIGPTR_3 15
-#define BZ_X_MAPPING_1 16
-#define BZ_X_MAPPING_2 17
-#define BZ_X_SELECTOR_1 18
-#define BZ_X_SELECTOR_2 19
-#define BZ_X_SELECTOR_3 20
-#define BZ_X_CODING_1 21
-#define BZ_X_CODING_2 22
-#define BZ_X_CODING_3 23
-#define BZ_X_MTF_1 24
-#define BZ_X_MTF_2 25
-#define BZ_X_MTF_3 26
-#define BZ_X_MTF_4 27
-#define BZ_X_MTF_5 28
-#define BZ_X_MTF_6 29
-
-
-
-/*-- Constants for the fast MTF decoder. --*/
-
-#define MTFA_SIZE 4096
-#define MTFL_SIZE 16
-
-
-
-/* save area for scalars in the main decompress code */
-typedef struct {
- Int32 i;
- Int32 j;
- Int32 t;
- Int32 alphaSize;
- Int32 nGroups;
- Int32 nSelectors;
- Int32 EOB;
- Int32 groupNo;
- Int32 groupPos;
- Int32 nextSym;
- Int32 nblockMAX;
- Int32 nblock;
- Int32 es;
- Int32 N;
- Int32 curr;
- Int32 zt;
- Int32 zn;
- Int32 zvec;
- Int32 zj;
- Int32 gSel;
- Int32 gMinlen;
- Int32* gLimit;
- Int32* gBase;
- Int32* gPerm;
-} DState_save;
-
-/*-- Structure holding all the decompression-side stuff. --*/
-
-typedef struct {
- /* pointer back to the struct bz_stream */
- char *next_in;
- unsigned int avail_in;
-
- char *next_out;
- unsigned int avail_out;
-
- /* state indicator for this stream */
- char state;
-
- UChar state_out_ch;
- Int32 state_out_len;
- Int32 nblock_used;
- Int32 k0;
- UInt32 tPos;
-
- /* the buffer for bit stream reading */
- UInt32 bsBuff;
- Int32 bsLive;
-
- /* for undoing the Burrows-Wheeler transform */
- Int32 origPtr;
- Int32 unzftab[256];
- Int32 cftab[257];
- Int32 cftabCopy[257];
-
-#ifndef NSIS_COMPRESS_BZIP2_SMALLMODE
- /* for undoing the Burrows-Wheeler transform (FAST) */
- UInt32 tt[ NSIS_COMPRESS_BZIP2_LEVEL * 100000 ];
-#else
- /* for undoing the Burrows-Wheeler transform (SMALL) */
- UInt16 ll16 [ NSIS_COMPRESS_BZIP2_LEVEL*100000 ];
- UChar ll4 [((1 + NSIS_COMPRESS_BZIP2_LEVEL*100000) >> 1) ];
-#endif
-
- /* map of bytes used in block */
- Int32 nInUse;
- Bool inUse[256];
- Bool inUse16[16];
- UChar seqToUnseq[256];
-
- /* for decoding the MTF values */
- UChar mtfa [MTFA_SIZE];
- Int32 mtfbase[256 / MTFL_SIZE];
- UChar selector [BZ_MAX_SELECTORS];
- UChar selectorMtf[BZ_MAX_SELECTORS];
- UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
-
- Int32 limit [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
- Int32 base [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
- Int32 perm [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
- Int32 minLens[BZ_N_GROUPS];
-
- /* save area for scalars in the main decompress code */
- DState_save save;
-} DState;
-
-
-#ifndef NSIS_COMPRESS_BZIP2_SMALLMODE
-/*-- Macros for decompression. --*/
-
-#define BZ_GET_FAST(cccc) \
- s->tPos = s->tt[s->tPos]; \
- cccc = (UChar)(s->tPos & 0xff); \
- s->tPos >>= 8;
-
-#define BZ_GET_FAST_C(cccc) \
- c_tPos = c_tt[c_tPos]; \
- cccc = (UChar)(c_tPos & 0xff); \
- c_tPos >>= 8;
-
-
-#else//NSIS_COMPRESS_BZIP2_SMALLMODE
-
-#define SET_LL4(i,n) \
- { if (((i) & 0x1) == 0) \
- s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0xf0) | (n); else \
- s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0x0f) | ((n) << 4); \
- }
-
-#define GET_LL4(i) \
- ((((UInt32)(s->ll4[(i) >> 1])) >> (((i) << 2) & 0x4)) & 0xF)
-
-#define SET_LL(i,n) \
- { s->ll16[i] = (UInt16)(n & 0x0000ffff); \
- SET_LL4(i, n >> 16); \
- }
-
-#define GET_LL(i) \
- (((UInt32)s->ll16[i]) | (GET_LL4(i) << 16))
-
-#define BZ_GET_SMALL(cccc) \
- cccc = BZ2_indexIntoF ( s->tPos, s->cftab ); \
- s->tPos = GET_LL(s->tPos);
-
-extern Int32 BZ2_indexIntoF( Int32, Int32* );
-
-#endif//smallmode
-
-/*-- externs for decompression. --*/
-extern Int32 NSISCALL BZ2_decompress ( DState* );
-
-extern void NSISCALL BZ2_hbCreateDecodeTables ( Int32*, Int32*, Int32*, UChar*,
- Int32, Int32, Int32 );
-
-
-#define BZ2_bzDecompressInit(s) { (s)->state = BZ_X_BLKHDR_1; (s)->bsLive = 0; }
-int NSISCALL BZ2_bzDecompress(DState *s);
-
-#endif//EXEHEAD
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-/*-------------------------------------------------------------*/
-/*--- end bzlib.h ---*/
-/*-------------------------------------------------------------*/
+/*
+ * This file is a part of the bzip2 compression module for NSIS.
+ *
+ * Copyright and license information can be found below.
+ * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
+ *
+ * The original zlib source code is available at
+ * http://www.bzip.org/
+ *
+ * This modification is not compatible with the original bzip2.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.
+ */
+
+/*-------------------------------------------------------------*/
+/*--- Public header file for the library. ---*/
+/*--- bzlib.h ---*/
+/*-------------------------------------------------------------*/
+
+/*--
+ This file is a part of bzip2 and/or libbzip2, a program and
+ library for lossless, block-sorting data compression.
+
+ Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
+ not claim that you wrote the original software. If you use this
+ software in a product, an acknowledgment in the product
+ documentation would be appreciated but is not required.
+
+ 3. Altered source versions must be plainly marked as such, and must
+ not be misrepresented as being the original software.
+
+ 4. The name of the author may not be used to endorse or promote
+ products derived from this software without specific prior written
+ permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ 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 AUTHOR 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.
+
+ Julian Seward, Cambridge, UK.
+ jseward@acm.org
+ bzip2/libbzip2 version 1.0 of 21 March 2000
+
+ This program is based on (at least) the work of:
+ Mike Burrows
+ David Wheeler
+ Peter Fenwick
+ Alistair Moffat
+ Radford Neal
+ Ian H. Witten
+ Robert Sedgewick
+ Jon L. Bentley
+
+ For more information on these sources, see the manual.
+--*/
+
+
+#ifndef _BZLIB_H
+#define _BZLIB_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "../exehead/config.h"
+#include "../Platform.h"
+
+#define BZ_RUN 0
+#define BZ_FLUSH 1
+#define BZ_FINISH 2
+
+#define BZ_OK 0
+#define BZ_RUN_OK 1
+#define BZ_FLUSH_OK 2
+#define BZ_FINISH_OK 3
+#define BZ_STREAM_END 4
+#define BZ_SEQUENCE_ERROR (-1)
+#define BZ_PARAM_ERROR (-2)
+#define BZ_MEM_ERROR (-3)
+#define BZ_DATA_ERROR (-4)
+#define BZ_DATA_ERROR_MAGIC (-5)
+#define BZ_IO_ERROR (-6)
+#define BZ_UNEXPECTED_EOF (-7)
+#define BZ_OUTBUFF_FULL (-8)
+#define BZ_CONFIG_ERROR (-9)
+
+/*-- Constants for the back end. --*/
+
+#define BZ_MAX_ALPHA_SIZE 258
+#define BZ_MAX_CODE_LEN 23
+
+#define BZ_RUNA 0
+#define BZ_RUNB 1
+
+#define BZ_N_GROUPS 6
+#define BZ_G_SIZE 50
+#define BZ_N_ITERS 4
+
+#define BZ_MAX_SELECTORS (2 + (900000 / BZ_G_SIZE))
+
+typedef char Char;
+typedef unsigned char Bool;
+typedef unsigned char UChar;
+typedef int Int32;
+typedef unsigned int UInt32;
+typedef short Int16;
+typedef unsigned short UInt16;
+
+#define True ((Bool)1)
+#define False ((Bool)0)
+
+#define AssertD(cond,msg) /* */
+#define AssertH(cond,errcode) /* */
+#define AssertD(cond,msg) /* */
+#define VPrintf0(zf) /* */
+#define VPrintf1(zf,za1) /* */
+#define VPrintf2(zf,za1,za2) /* */
+#define VPrintf3(zf,za1,za2,za3) /* */
+#define VPrintf4(zf,za1,za2,za3,za4) /* */
+#define VPrintf5(zf,za1,za2,za3,za4,za5) /* */
+
+#ifndef EXEHEAD
+
+#define BZALLOC(items) malloc(items)
+#define BZFREE(addr) { if (addr) free(addr); }
+#define mini_memcpy memcpy
+
+typedef struct {
+ char *next_in;
+ unsigned int avail_in;
+
+ char *next_out;
+ unsigned int avail_out;
+
+ void *state;
+} bz_stream;
+
+/*-- Core (low-level) library functions --*/
+
+extern int BZ2_bzCompressInit(
+ bz_stream* strm,
+ int blockSize100k,
+ int verbosity,
+ int workFactor
+ );
+
+extern int BZ2_bzCompress( bz_stream* strm, int action );
+extern int BZ2_bzCompressEnd(bz_stream* strm );
+
+/*-- States and modes for compression. --*/
+
+#define BZ_M_IDLE 1
+#define BZ_M_RUNNING 2
+#define BZ_M_FLUSHING 3
+#define BZ_M_FINISHING 4
+
+#define BZ_S_OUTPUT 1
+#define BZ_S_INPUT 2
+
+#define BZ_N_RADIX 2
+#define BZ_N_QSORT 12
+#define BZ_N_SHELL 18
+#define BZ_N_OVERSHOOT (BZ_N_RADIX + BZ_N_QSORT + BZ_N_SHELL + 2)
+
+/*-- Structure holding all the compression-side stuff. --*/
+
+typedef struct {
+ /* pointer back to the struct bz_stream */
+ bz_stream *strm;
+
+ /* mode this stream is in, and whether inputting */
+ /* or outputting data */
+ Int32 mode;
+ Int32 state;
+
+ /* remembers avail_in when flush/finish requested */
+ UInt32 avail_in_expect;
+
+ /* for doing the block sorting */
+ UInt32* arr1;
+ UInt32* arr2;
+ UInt32* ftab;
+ Int32 origPtr;
+
+ /* aliases for arr1 and arr2 */
+ UInt32* ptr;
+ UChar* block;
+ UInt16* mtfv;
+ UChar* zbits;
+
+ /* for deciding when to use the fallback sorting algorithm */
+ Int32 workFactor;
+
+ /* run-length-encoding of the input */
+ UInt32 state_in_ch;
+ Int32 state_in_len;
+
+ /* input and output limits and current posns */
+ Int32 nblock;
+ Int32 nblockMAX;
+ Int32 numZ;
+ Int32 state_out_pos;
+
+ /* map of bytes used in block */
+ Int32 nInUse;
+ Bool inUse[256];
+ UChar unseqToSeq[256];
+
+ /* the buffer for bit stream creation */
+ UInt32 bsBuff;
+ Int32 bsLive;
+
+ /* misc administratium */
+ Int32 blockNo;
+
+ /* stuff for coding the MTF values */
+ Int32 nMTF;
+ Int32 mtfFreq [BZ_MAX_ALPHA_SIZE];
+ UChar selector [BZ_MAX_SELECTORS];
+ UChar selectorMtf[BZ_MAX_SELECTORS];
+
+ UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ Int32 code [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ Int32 rfreq [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ /* second dimension: only 3 needed; 4 makes index calculations faster */
+ UInt32 len_pack[BZ_MAX_ALPHA_SIZE][4];
+
+} EState;
+
+
+
+/*-- externs for compression. --*/
+
+extern void BZ2_blockSort ( EState* );
+extern void BZ2_compressBlock ( EState*, Bool );
+extern void BZ2_bsInitWrite ( EState* );
+extern void BZ2_hbAssignCodes ( Int32*, UChar*, Int32, Int32, Int32 );
+extern void BZ2_hbMakeCodeLengths ( UChar*, Int32*, Int32, Int32 );
+
+#else//EXEHEAD
+
+/*-- states for decompression. --*/
+
+#define BZ_X_IDLE 1
+#define BZ_X_OUTPUT 2
+
+#define BZ_X_BLKHDR_1 11
+#define BZ_X_RANDBIT 12
+#define BZ_X_ORIGPTR_1 13
+#define BZ_X_ORIGPTR_2 14
+#define BZ_X_ORIGPTR_3 15
+#define BZ_X_MAPPING_1 16
+#define BZ_X_MAPPING_2 17
+#define BZ_X_SELECTOR_1 18
+#define BZ_X_SELECTOR_2 19
+#define BZ_X_SELECTOR_3 20
+#define BZ_X_CODING_1 21
+#define BZ_X_CODING_2 22
+#define BZ_X_CODING_3 23
+#define BZ_X_MTF_1 24
+#define BZ_X_MTF_2 25
+#define BZ_X_MTF_3 26
+#define BZ_X_MTF_4 27
+#define BZ_X_MTF_5 28
+#define BZ_X_MTF_6 29
+
+
+
+/*-- Constants for the fast MTF decoder. --*/
+
+#define MTFA_SIZE 4096
+#define MTFL_SIZE 16
+
+
+
+/* save area for scalars in the main decompress code */
+typedef struct {
+ Int32 i;
+ Int32 j;
+ Int32 t;
+ Int32 alphaSize;
+ Int32 nGroups;
+ Int32 nSelectors;
+ Int32 EOB;
+ Int32 groupNo;
+ Int32 groupPos;
+ Int32 nextSym;
+ Int32 nblockMAX;
+ Int32 nblock;
+ Int32 es;
+ Int32 N;
+ Int32 curr;
+ Int32 zt;
+ Int32 zn;
+ Int32 zvec;
+ Int32 zj;
+ Int32 gSel;
+ Int32 gMinlen;
+ Int32* gLimit;
+ Int32* gBase;
+ Int32* gPerm;
+} DState_save;
+
+/*-- Structure holding all the decompression-side stuff. --*/
+
+typedef struct {
+ /* pointer back to the struct bz_stream */
+ char *next_in;
+ unsigned int avail_in;
+
+ char *next_out;
+ unsigned int avail_out;
+
+ /* state indicator for this stream */
+ char state;
+
+ UChar state_out_ch;
+ Int32 state_out_len;
+ Int32 nblock_used;
+ Int32 k0;
+ UInt32 tPos;
+
+ /* the buffer for bit stream reading */
+ UInt32 bsBuff;
+ Int32 bsLive;
+
+ /* for undoing the Burrows-Wheeler transform */
+ Int32 origPtr;
+ Int32 unzftab[256];
+ Int32 cftab[257];
+ Int32 cftabCopy[257];
+
+#ifndef NSIS_COMPRESS_BZIP2_SMALLMODE
+ /* for undoing the Burrows-Wheeler transform (FAST) */
+ UInt32 tt[ NSIS_COMPRESS_BZIP2_LEVEL * 100000 ];
+#else
+ /* for undoing the Burrows-Wheeler transform (SMALL) */
+ UInt16 ll16 [ NSIS_COMPRESS_BZIP2_LEVEL*100000 ];
+ UChar ll4 [((1 + NSIS_COMPRESS_BZIP2_LEVEL*100000) >> 1) ];
+#endif
+
+ /* map of bytes used in block */
+ Int32 nInUse;
+ Bool inUse[256];
+ Bool inUse16[16];
+ UChar seqToUnseq[256];
+
+ /* for decoding the MTF values */
+ UChar mtfa [MTFA_SIZE];
+ Int32 mtfbase[256 / MTFL_SIZE];
+ UChar selector [BZ_MAX_SELECTORS];
+ UChar selectorMtf[BZ_MAX_SELECTORS];
+ UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+
+ Int32 limit [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ Int32 base [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ Int32 perm [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ Int32 minLens[BZ_N_GROUPS];
+
+ /* save area for scalars in the main decompress code */
+ DState_save save;
+} DState;
+
+
+#ifndef NSIS_COMPRESS_BZIP2_SMALLMODE
+/*-- Macros for decompression. --*/
+
+#define BZ_GET_FAST(cccc) \
+ s->tPos = s->tt[s->tPos]; \
+ cccc = (UChar)(s->tPos & 0xff); \
+ s->tPos >>= 8;
+
+#define BZ_GET_FAST_C(cccc) \
+ c_tPos = c_tt[c_tPos]; \
+ cccc = (UChar)(c_tPos & 0xff); \
+ c_tPos >>= 8;
+
+
+#else//NSIS_COMPRESS_BZIP2_SMALLMODE
+
+#define SET_LL4(i,n) \
+ { if (((i) & 0x1) == 0) \
+ s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0xf0) | (n); else \
+ s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0x0f) | ((n) << 4); \
+ }
+
+#define GET_LL4(i) \
+ ((((UInt32)(s->ll4[(i) >> 1])) >> (((i) << 2) & 0x4)) & 0xF)
+
+#define SET_LL(i,n) \
+ { s->ll16[i] = (UInt16)(n & 0x0000ffff); \
+ SET_LL4(i, n >> 16); \
+ }
+
+#define GET_LL(i) \
+ (((UInt32)s->ll16[i]) | (GET_LL4(i) << 16))
+
+#define BZ_GET_SMALL(cccc) \
+ cccc = BZ2_indexIntoF ( s->tPos, s->cftab ); \
+ s->tPos = GET_LL(s->tPos);
+
+extern Int32 BZ2_indexIntoF( Int32, Int32* );
+
+#endif//smallmode
+
+/*-- externs for decompression. --*/
+extern Int32 NSISCALL BZ2_decompress ( DState* );
+
+extern void NSISCALL BZ2_hbCreateDecodeTables ( Int32*, Int32*, Int32*, UChar*,
+ Int32, Int32, Int32 );
+
+
+#define BZ2_bzDecompressInit(s) { (s)->state = BZ_X_BLKHDR_1; (s)->bsLive = 0; }
+int NSISCALL BZ2_bzDecompress(DState *s);
+
+#endif//EXEHEAD
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/*-------------------------------------------------------------*/
+/*--- end bzlib.h ---*/
+/*-------------------------------------------------------------*/
diff --git a/Source/bzip2/compress.c b/Source/bzip2/compress.c
index 67485f4..6263c5f 100755
--- a/Source/bzip2/compress.c
+++ b/Source/bzip2/compress.c
@@ -1,669 +1,669 @@
-/*
- * This file is a part of the bzip2 compression module for NSIS.
- *
- * Copyright and license information can be found below.
- * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
- *
- * The original zlib source code is available at
- * http://www.bzip.org/
- *
- * This modification is not compatible with the original bzip2.
- *
- * This software is provided 'as-is', without any express or implied
- * warranty.
- */
-
-/*-------------------------------------------------------------*/
-/*--- Compression machinery (not incl block sorting) ---*/
-/*--- compress.c ---*/
-/*-------------------------------------------------------------*/
-
-/*--
- This file is a part of bzip2 and/or libbzip2, a program and
- library for lossless, block-sorting data compression.
-
- Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
- not claim that you wrote the original software. If you use this
- software in a product, an acknowledgment in the product
- documentation would be appreciated but is not required.
-
- 3. Altered source versions must be plainly marked as such, and must
- not be misrepresented as being the original software.
-
- 4. The name of the author may not be used to endorse or promote
- products derived from this software without specific prior written
- permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- 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 AUTHOR 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.
-
- Julian Seward, Cambridge, UK.
- jseward@acm.org
- bzip2/libbzip2 version 1.0 of 21 March 2000
-
- This program is based on (at least) the work of:
- Mike Burrows
- David Wheeler
- Peter Fenwick
- Alistair Moffat
- Radford Neal
- Ian H. Witten
- Robert Sedgewick
- Jon L. Bentley
-
- For more information on these sources, see the manual.
---*/
-
-/*--
- CHANGES
- ~~~~~~~
- 0.9.0 -- original version.
-
- 0.9.0a/b -- no changes in this file.
-
- 0.9.0c
- * changed setting of nGroups in sendMTFValues() so as to
- do a bit better on small files
---*/
-
-#include "bzlib.h"
-
-
-/*---------------------------------------------------*/
-/*--- Bit stream I/O ---*/
-/*---------------------------------------------------*/
-
-/*---------------------------------------------------*/
-void BZ2_bsInitWrite ( EState* s )
-{
- s->bsLive = 0;
- s->bsBuff = 0;
-}
-
-
-/*---------------------------------------------------*/
-static
-void bsFinishWrite ( EState* s )
-{
- while (s->bsLive > 0) {
- s->zbits[s->numZ] = (UChar)(s->bsBuff >> 24);
- s->numZ++;
- s->bsBuff <<= 8;
- s->bsLive -= 8;
- }
-}
-
-
-/*---------------------------------------------------*/
-#define bsNEEDW(nz) \
-{ \
- while (s->bsLive >= 8) { \
- s->zbits[s->numZ] \
- = (UChar)(s->bsBuff >> 24); \
- s->numZ++; \
- s->bsBuff <<= 8; \
- s->bsLive -= 8; \
- } \
-}
-
-
-/*---------------------------------------------------*/
-static void bsW ( EState* s, Int32 n, UInt32 v )
-{
- bsNEEDW ( n );
- s->bsBuff |= (v << (32 - s->bsLive - n));
- s->bsLive += n;
-}
-
-
-/*---------------------------------------------------*/
-/*static
-void bsPutUInt32 ( EState* s, UInt32 u )
-{
- bsW ( s, 8, (u >> 24) & 0xffL );
- bsW ( s, 8, (u >> 16) & 0xffL );
- bsW ( s, 8, (u >> 8) & 0xffL );
- bsW ( s, 8, u & 0xffL );
-}*/
-
-
-/*---------------------------------------------------*/
-static
-void bsPutUChar ( EState* s, UChar c )
-{
- bsW( s, 8, (UInt32)c );
-}
-
-
-/*---------------------------------------------------*/
-/*--- The back end proper ---*/
-/*---------------------------------------------------*/
-
-/*---------------------------------------------------*/
-static
-void makeMaps_e ( EState* s )
-{
- Int32 i;
- s->nInUse = 0;
- for (i = 0; i < 256; i++)
- if (s->inUse[i]) {
- s->unseqToSeq[i] = s->nInUse;
- s->nInUse++;
- }
-}
-
-
-/*---------------------------------------------------*/
-static
-void generateMTFValues ( EState* s )
-{
- UChar yy[256];
- Int32 i, j;
- Int32 zPend;
- Int32 wr;
- Int32 EOB;
-
- /*
- After sorting (eg, here),
- s->arr1 [ 0 .. s->nblock-1 ] holds sorted order,
- and
- ((UChar*)s->arr2) [ 0 .. s->nblock-1 ]
- holds the original block data.
-
- The first thing to do is generate the MTF values,
- and put them in
- ((UInt16*)s->arr1) [ 0 .. s->nblock-1 ].
- Because there are strictly fewer or equal MTF values
- than block values, ptr values in this area are overwritten
- with MTF values only when they are no longer needed.
-
- The final compressed bitstream is generated into the
- area starting at
- (UChar*) (&((UChar*)s->arr2)[s->nblock])
-
- These storage aliases are set up in bzCompressInit(),
- except for the last one, which is arranged in
- compressBlock().
- */
- UInt32* ptr = s->ptr;
- UChar* block = s->block;
- UInt16* mtfv = s->mtfv;
-
- makeMaps_e ( s );
- EOB = s->nInUse+1;
-
- for (i = 0; i <= EOB; i++) s->mtfFreq[i] = 0;
-
- wr = 0;
- zPend = 0;
- for (i = 0; i < s->nInUse; i++) yy[i] = (UChar) i;
-
- for (i = 0; i < s->nblock; i++) {
- UChar ll_i;
- AssertD ( wr <= i, "generateMTFValues(1)" );
- j = ptr[i]-1; if (j < 0) j += s->nblock;
- ll_i = s->unseqToSeq[block[j]];
- AssertD ( ll_i < s->nInUse, "generateMTFValues(2a)" );
-
- if (yy[0] == ll_i) {
- zPend++;
- } else {
-
- if (zPend > 0) {
- zPend--;
- while (True) {
- if (zPend & 1) {
- mtfv[wr] = BZ_RUNB; wr++;
- s->mtfFreq[BZ_RUNB]++;
- } else {
- mtfv[wr] = BZ_RUNA; wr++;
- s->mtfFreq[BZ_RUNA]++;
- }
- if (zPend < 2) break;
- zPend = (zPend - 2) / 2;
- };
- zPend = 0;
- }
- {
- register UChar rtmp;
- register UChar* ryy_j;
- register UChar rll_i;
- rtmp = yy[1];
- yy[1] = yy[0];
- ryy_j = &(yy[1]);
- rll_i = ll_i;
- while ( rll_i != rtmp ) {
- register UChar rtmp2;
- ryy_j++;
- rtmp2 = rtmp;
- rtmp = *ryy_j;
- *ryy_j = rtmp2;
- };
- yy[0] = rtmp;
- j = ryy_j - &(yy[0]);
- mtfv[wr] = j+1; wr++; s->mtfFreq[j+1]++;
- }
-
- }
- }
-
- if (zPend > 0) {
- zPend--;
- while (True) {
- if (zPend & 1) {
- mtfv[wr] = BZ_RUNB; wr++;
- s->mtfFreq[BZ_RUNB]++;
- } else {
- mtfv[wr] = BZ_RUNA; wr++;
- s->mtfFreq[BZ_RUNA]++;
- }
- if (zPend < 2) break;
- zPend = (zPend - 2) / 2;
- };
- zPend = 0;
- }
-
- mtfv[wr] = EOB; wr++; s->mtfFreq[EOB]++;
-
- s->nMTF = wr;
-}
-
-
-/*---------------------------------------------------*/
-#define BZ_LESSER_ICOST 0
-#define BZ_GREATER_ICOST 15
-
-static
-void sendMTFValues ( EState* s )
-{
- Int32 v, t, i, j, gs, ge, totc, bt, bc, iter;
- Int32 nSelectors, alphaSize, minLen, maxLen, selCtr;
- Int32 nGroups, nBytes;
-
- /*--
- UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
- is a global since the decoder also needs it.
-
- Int32 code[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
- Int32 rfreq[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
- are also globals only used in this proc.
- Made global to keep stack frame size small.
- --*/
-
-
- UInt16 cost[BZ_N_GROUPS];
- Int32 fave[BZ_N_GROUPS];
-
- UInt16* mtfv = s->mtfv;
-
-
- alphaSize = s->nInUse+2;
- for (t = 0; t < BZ_N_GROUPS; t++)
- for (v = 0; v < alphaSize; v++)
- s->len[t][v] = BZ_GREATER_ICOST;
-
- /*--- Decide how many coding tables to use ---*/
- AssertH ( s->nMTF > 0, 3001 );
- if (s->nMTF < 200) nGroups = 2; else
- if (s->nMTF < 600) nGroups = 3; else
- if (s->nMTF < 1200) nGroups = 4; else
- if (s->nMTF < 2400) nGroups = 5; else
- nGroups = 6;
-
- /*--- Generate an initial set of coding tables ---*/
- {
- Int32 nPart, remF, tFreq, aFreq;
-
- nPart = nGroups;
- remF = s->nMTF;
- gs = 0;
- while (nPart > 0) {
- tFreq = remF / nPart;
- ge = gs-1;
- aFreq = 0;
- while (aFreq < tFreq && ge < alphaSize-1) {
- ge++;
- aFreq += s->mtfFreq[ge];
- }
-
- if (ge > gs
- && nPart != nGroups && nPart != 1
- && ((nGroups-nPart) % 2 == 1)) {
- aFreq -= s->mtfFreq[ge];
- ge--;
- }
-
- for (v = 0; v < alphaSize; v++)
- if (v >= gs && v <= ge)
- s->len[nPart-1][v] = BZ_LESSER_ICOST; else
- s->len[nPart-1][v] = BZ_GREATER_ICOST;
-
- nPart--;
- gs = ge+1;
- remF -= aFreq;
- }
- }
-
- /*---
- Iterate up to BZ_N_ITERS times to improve the tables.
- ---*/
- for (iter = 0; iter < BZ_N_ITERS; iter++) {
-
- for (t = 0; t < nGroups; t++) fave[t] = 0;
-
- for (t = 0; t < nGroups; t++)
- for (v = 0; v < alphaSize; v++)
- s->rfreq[t][v] = 0;
-
- /*---
- Set up an auxiliary length table which is used to fast-track
- the common case (nGroups == 6).
- ---*/
- if (nGroups == 6) {
- for (v = 0; v < alphaSize; v++) {
- s->len_pack[v][0] = (s->len[1][v] << 16) | s->len[0][v];
- s->len_pack[v][1] = (s->len[3][v] << 16) | s->len[2][v];
- s->len_pack[v][2] = (s->len[5][v] << 16) | s->len[4][v];
- }
- }
-
- nSelectors = 0;
- totc = 0;
- gs = 0;
- while (True) {
-
- /*--- Set group start & end marks. --*/
- if (gs >= s->nMTF) break;
- ge = gs + BZ_G_SIZE - 1;
- if (ge >= s->nMTF) ge = s->nMTF-1;
-
- /*--
- Calculate the cost of this group as coded
- by each of the coding tables.
- --*/
- for (t = 0; t < nGroups; t++) cost[t] = 0;
-
- if (nGroups == 6 && 50 == ge-gs+1) {
- /*--- fast track the common case ---*/
- register UInt32 cost01, cost23, cost45;
- register UInt16 icv;
- cost01 = cost23 = cost45 = 0;
-
-# define BZ_ITER(nn) \
- icv = mtfv[gs+(nn)]; \
- cost01 += s->len_pack[icv][0]; \
- cost23 += s->len_pack[icv][1]; \
- cost45 += s->len_pack[icv][2]; \
-
- BZ_ITER(0); BZ_ITER(1); BZ_ITER(2); BZ_ITER(3); BZ_ITER(4);
- BZ_ITER(5); BZ_ITER(6); BZ_ITER(7); BZ_ITER(8); BZ_ITER(9);
- BZ_ITER(10); BZ_ITER(11); BZ_ITER(12); BZ_ITER(13); BZ_ITER(14);
- BZ_ITER(15); BZ_ITER(16); BZ_ITER(17); BZ_ITER(18); BZ_ITER(19);
- BZ_ITER(20); BZ_ITER(21); BZ_ITER(22); BZ_ITER(23); BZ_ITER(24);
- BZ_ITER(25); BZ_ITER(26); BZ_ITER(27); BZ_ITER(28); BZ_ITER(29);
- BZ_ITER(30); BZ_ITER(31); BZ_ITER(32); BZ_ITER(33); BZ_ITER(34);
- BZ_ITER(35); BZ_ITER(36); BZ_ITER(37); BZ_ITER(38); BZ_ITER(39);
- BZ_ITER(40); BZ_ITER(41); BZ_ITER(42); BZ_ITER(43); BZ_ITER(44);
- BZ_ITER(45); BZ_ITER(46); BZ_ITER(47); BZ_ITER(48); BZ_ITER(49);
-
-# undef BZ_ITER
-
- cost[0] = cost01 & 0xffff; cost[1] = cost01 >> 16;
- cost[2] = cost23 & 0xffff; cost[3] = cost23 >> 16;
- cost[4] = cost45 & 0xffff; cost[5] = cost45 >> 16;
-
- } else {
- /*--- slow version which correctly handles all situations ---*/
- for (i = gs; i <= ge; i++) {
- UInt16 icv = mtfv[i];
- for (t = 0; t < nGroups; t++) cost[t] += s->len[t][icv];
- }
- }
-
- /*--
- Find the coding table which is best for this group,
- and record its identity in the selector table.
- --*/
- bc = 999999999; bt = -1;
- for (t = 0; t < nGroups; t++)
- if (cost[t] < bc) { bc = cost[t]; bt = t; };
- totc += bc;
- fave[bt]++;
- s->selector[nSelectors] = bt;
- nSelectors++;
-
- /*--
- Increment the symbol frequencies for the selected table.
- --*/
- if (nGroups == 6 && 50 == ge-gs+1) {
- /*--- fast track the common case ---*/
-
-# define BZ_ITUR(nn) s->rfreq[bt][ mtfv[gs+(nn)] ]++
-
- BZ_ITUR(0); BZ_ITUR(1); BZ_ITUR(2); BZ_ITUR(3); BZ_ITUR(4);
- BZ_ITUR(5); BZ_ITUR(6); BZ_ITUR(7); BZ_ITUR(8); BZ_ITUR(9);
- BZ_ITUR(10); BZ_ITUR(11); BZ_ITUR(12); BZ_ITUR(13); BZ_ITUR(14);
- BZ_ITUR(15); BZ_ITUR(16); BZ_ITUR(17); BZ_ITUR(18); BZ_ITUR(19);
- BZ_ITUR(20); BZ_ITUR(21); BZ_ITUR(22); BZ_ITUR(23); BZ_ITUR(24);
- BZ_ITUR(25); BZ_ITUR(26); BZ_ITUR(27); BZ_ITUR(28); BZ_ITUR(29);
- BZ_ITUR(30); BZ_ITUR(31); BZ_ITUR(32); BZ_ITUR(33); BZ_ITUR(34);
- BZ_ITUR(35); BZ_ITUR(36); BZ_ITUR(37); BZ_ITUR(38); BZ_ITUR(39);
- BZ_ITUR(40); BZ_ITUR(41); BZ_ITUR(42); BZ_ITUR(43); BZ_ITUR(44);
- BZ_ITUR(45); BZ_ITUR(46); BZ_ITUR(47); BZ_ITUR(48); BZ_ITUR(49);
-
-# undef BZ_ITUR
-
- } else {
- /*--- slow version which correctly handles all situations ---*/
- for (i = gs; i <= ge; i++)
- s->rfreq[bt][ mtfv[i] ]++;
- }
-
- gs = ge+1;
- }
-
- /*--
- Recompute the tables based on the accumulated frequencies.
- --*/
- for (t = 0; t < nGroups; t++)
- BZ2_hbMakeCodeLengths ( &(s->len[t][0]), &(s->rfreq[t][0]),
- alphaSize, 20 );
- }
-
-
- AssertH( nGroups < 8, 3002 );
- AssertH( nSelectors < 32768 &&
- nSelectors <= (2 + (NSIS_COMPRESS_BZIP2_LEVEL * 100000 / BZ_G_SIZE)),
- 3003 );
-
-
- /*--- Compute MTF values for the selectors. ---*/
- {
- UChar pos[BZ_N_GROUPS], ll_i, tmp2, tmp;
- for (i = 0; i < nGroups; i++) pos[i] = i;
- for (i = 0; i < nSelectors; i++) {
- ll_i = s->selector[i];
- j = 0;
- tmp = pos[j];
- while ( ll_i != tmp ) {
- j++;
- tmp2 = tmp;
- tmp = pos[j];
- pos[j] = tmp2;
- };
- pos[0] = tmp;
- s->selectorMtf[i] = j;
- }
- };
-
- /*--- Assign actual codes for the tables. --*/
- for (t = 0; t < nGroups; t++) {
- minLen = 32;
- maxLen = 0;
- for (i = 0; i < alphaSize; i++) {
- if (s->len[t][i] > maxLen) maxLen = s->len[t][i];
- if (s->len[t][i] < minLen) minLen = s->len[t][i];
- }
- AssertH ( !(maxLen > 20), 3004 );
- AssertH ( !(minLen < 1), 3005 );
- BZ2_hbAssignCodes ( &(s->code[t][0]), &(s->len[t][0]),
- minLen, maxLen, alphaSize );
- }
-
- /*--- Transmit the mapping table. ---*/
- {
- Bool inUse16[16];
- for (i = 0; i < 16; i++) {
- inUse16[i] = False;
- for (j = 0; j < 16; j++)
- if (s->inUse[i * 16 + j]) inUse16[i] = True;
- }
-
- nBytes = s->numZ;
- for (i = 0; i < 16; i++)
- if (inUse16[i]) bsW(s,1,1); else bsW(s,1,0);
-
- for (i = 0; i < 16; i++)
- if (inUse16[i])
- for (j = 0; j < 16; j++) {
- if (s->inUse[i * 16 + j]) bsW(s,1,1); else bsW(s,1,0);
- }
-
- }
-
- /*--- Now the selectors. ---*/
- nBytes = s->numZ;
- bsW ( s, 3, nGroups );
- bsW ( s, 15, nSelectors );
- for (i = 0; i < nSelectors; i++) {
- for (j = 0; j < s->selectorMtf[i]; j++) bsW(s,1,1);
- bsW(s,1,0);
- }
-
- /*--- Now the coding tables. ---*/
- nBytes = s->numZ;
-
- for (t = 0; t < nGroups; t++) {
- Int32 curr = s->len[t][0];
- bsW ( s, 5, curr );
- for (i = 0; i < alphaSize; i++) {
- while (curr < s->len[t][i]) { bsW(s,2,2); curr++; /* 10 */ };
- while (curr > s->len[t][i]) { bsW(s,2,3); curr--; /* 11 */ };
- bsW ( s, 1, 0 );
- }
- }
-
-
- /*--- And finally, the block data proper ---*/
- nBytes = s->numZ;
- selCtr = 0;
- gs = 0;
- while (True) {
- if (gs >= s->nMTF) break;
- ge = gs + BZ_G_SIZE - 1;
- if (ge >= s->nMTF) ge = s->nMTF-1;
- AssertH ( s->selector[selCtr] < nGroups, 3006 );
-
- if (nGroups == 6 && 50 == ge-gs+1) {
- /*--- fast track the common case ---*/
- UInt16 mtfv_i;
- UChar* s_len_sel_selCtr
- = &(s->len[s->selector[selCtr]][0]);
- Int32* s_code_sel_selCtr
- = &(s->code[s->selector[selCtr]][0]);
-
-# define BZ_ITAH(nn) \
- mtfv_i = mtfv[gs+(nn)]; \
- bsW ( s, \
- s_len_sel_selCtr[mtfv_i], \
- s_code_sel_selCtr[mtfv_i] )
-
- BZ_ITAH(0); BZ_ITAH(1); BZ_ITAH(2); BZ_ITAH(3); BZ_ITAH(4);
- BZ_ITAH(5); BZ_ITAH(6); BZ_ITAH(7); BZ_ITAH(8); BZ_ITAH(9);
- BZ_ITAH(10); BZ_ITAH(11); BZ_ITAH(12); BZ_ITAH(13); BZ_ITAH(14);
- BZ_ITAH(15); BZ_ITAH(16); BZ_ITAH(17); BZ_ITAH(18); BZ_ITAH(19);
- BZ_ITAH(20); BZ_ITAH(21); BZ_ITAH(22); BZ_ITAH(23); BZ_ITAH(24);
- BZ_ITAH(25); BZ_ITAH(26); BZ_ITAH(27); BZ_ITAH(28); BZ_ITAH(29);
- BZ_ITAH(30); BZ_ITAH(31); BZ_ITAH(32); BZ_ITAH(33); BZ_ITAH(34);
- BZ_ITAH(35); BZ_ITAH(36); BZ_ITAH(37); BZ_ITAH(38); BZ_ITAH(39);
- BZ_ITAH(40); BZ_ITAH(41); BZ_ITAH(42); BZ_ITAH(43); BZ_ITAH(44);
- BZ_ITAH(45); BZ_ITAH(46); BZ_ITAH(47); BZ_ITAH(48); BZ_ITAH(49);
-
-# undef BZ_ITAH
-
- } else {
- /*--- slow version which correctly handles all situations ---*/
- for (i = gs; i <= ge; i++) {
- bsW ( s,
- s->len [s->selector[selCtr]] [mtfv[i]],
- s->code [s->selector[selCtr]] [mtfv[i]] );
- }
- }
-
-
- gs = ge+1;
- selCtr++;
- }
- AssertH( selCtr == nSelectors, 3007 );
-
-}
-
-
-/*---------------------------------------------------*/
-void BZ2_compressBlock ( EState* s, Bool is_last_block )
-{
- if (s->nblock > 0) {
-
- if (s->blockNo > 1) s->numZ = 0;
-
-
- BZ2_blockSort ( s );
- }
-
- s->zbits = (UChar*) (&((UChar*)s->arr2)[s->nblock]);
-
- /*-- If this is the first block, create the stream header. --*/
- if (s->blockNo == 1) {
- BZ2_bsInitWrite ( s );
- }
-
- if (s->nblock > 0) {
-
- bsPutUChar ( s, 0x31 );
-
- bsW ( s, 24, s->origPtr );
- generateMTFValues ( s );
- sendMTFValues ( s );
- }
-
-
- /*-- If this is the last block, add the stream trailer. --*/
- if (is_last_block) {
-
- bsPutUChar ( s, 0x17 );
- bsFinishWrite ( s );
- }
-}
-
-
-/*-------------------------------------------------------------*/
-/*--- end compress.c ---*/
-/*-------------------------------------------------------------*/
+/*
+ * This file is a part of the bzip2 compression module for NSIS.
+ *
+ * Copyright and license information can be found below.
+ * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
+ *
+ * The original zlib source code is available at
+ * http://www.bzip.org/
+ *
+ * This modification is not compatible with the original bzip2.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.
+ */
+
+/*-------------------------------------------------------------*/
+/*--- Compression machinery (not incl block sorting) ---*/
+/*--- compress.c ---*/
+/*-------------------------------------------------------------*/
+
+/*--
+ This file is a part of bzip2 and/or libbzip2, a program and
+ library for lossless, block-sorting data compression.
+
+ Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
+ not claim that you wrote the original software. If you use this
+ software in a product, an acknowledgment in the product
+ documentation would be appreciated but is not required.
+
+ 3. Altered source versions must be plainly marked as such, and must
+ not be misrepresented as being the original software.
+
+ 4. The name of the author may not be used to endorse or promote
+ products derived from this software without specific prior written
+ permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ 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 AUTHOR 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.
+
+ Julian Seward, Cambridge, UK.
+ jseward@acm.org
+ bzip2/libbzip2 version 1.0 of 21 March 2000
+
+ This program is based on (at least) the work of:
+ Mike Burrows
+ David Wheeler
+ Peter Fenwick
+ Alistair Moffat
+ Radford Neal
+ Ian H. Witten
+ Robert Sedgewick
+ Jon L. Bentley
+
+ For more information on these sources, see the manual.
+--*/
+
+/*--
+ CHANGES
+ ~~~~~~~
+ 0.9.0 -- original version.
+
+ 0.9.0a/b -- no changes in this file.
+
+ 0.9.0c
+ * changed setting of nGroups in sendMTFValues() so as to
+ do a bit better on small files
+--*/
+
+#include "bzlib.h"
+
+
+/*---------------------------------------------------*/
+/*--- Bit stream I/O ---*/
+/*---------------------------------------------------*/
+
+/*---------------------------------------------------*/
+void BZ2_bsInitWrite ( EState* s )
+{
+ s->bsLive = 0;
+ s->bsBuff = 0;
+}
+
+
+/*---------------------------------------------------*/
+static
+void bsFinishWrite ( EState* s )
+{
+ while (s->bsLive > 0) {
+ s->zbits[s->numZ] = (UChar)(s->bsBuff >> 24);
+ s->numZ++;
+ s->bsBuff <<= 8;
+ s->bsLive -= 8;
+ }
+}
+
+
+/*---------------------------------------------------*/
+#define bsNEEDW(nz) \
+{ \
+ while (s->bsLive >= 8) { \
+ s->zbits[s->numZ] \
+ = (UChar)(s->bsBuff >> 24); \
+ s->numZ++; \
+ s->bsBuff <<= 8; \
+ s->bsLive -= 8; \
+ } \
+}
+
+
+/*---------------------------------------------------*/
+static void bsW ( EState* s, Int32 n, UInt32 v )
+{
+ bsNEEDW ( n );
+ s->bsBuff |= (v << (32 - s->bsLive - n));
+ s->bsLive += n;
+}
+
+
+/*---------------------------------------------------*/
+/*static
+void bsPutUInt32 ( EState* s, UInt32 u )
+{
+ bsW ( s, 8, (u >> 24) & 0xffL );
+ bsW ( s, 8, (u >> 16) & 0xffL );
+ bsW ( s, 8, (u >> 8) & 0xffL );
+ bsW ( s, 8, u & 0xffL );
+}*/
+
+
+/*---------------------------------------------------*/
+static
+void bsPutUChar ( EState* s, UChar c )
+{
+ bsW( s, 8, (UInt32)c );
+}
+
+
+/*---------------------------------------------------*/
+/*--- The back end proper ---*/
+/*---------------------------------------------------*/
+
+/*---------------------------------------------------*/
+static
+void makeMaps_e ( EState* s )
+{
+ Int32 i;
+ s->nInUse = 0;
+ for (i = 0; i < 256; i++)
+ if (s->inUse[i]) {
+ s->unseqToSeq[i] = s->nInUse;
+ s->nInUse++;
+ }
+}
+
+
+/*---------------------------------------------------*/
+static
+void generateMTFValues ( EState* s )
+{
+ UChar yy[256];
+ Int32 i, j;
+ Int32 zPend;
+ Int32 wr;
+ Int32 EOB;
+
+ /*
+ After sorting (eg, here),
+ s->arr1 [ 0 .. s->nblock-1 ] holds sorted order,
+ and
+ ((UChar*)s->arr2) [ 0 .. s->nblock-1 ]
+ holds the original block data.
+
+ The first thing to do is generate the MTF values,
+ and put them in
+ ((UInt16*)s->arr1) [ 0 .. s->nblock-1 ].
+ Because there are strictly fewer or equal MTF values
+ than block values, ptr values in this area are overwritten
+ with MTF values only when they are no longer needed.
+
+ The final compressed bitstream is generated into the
+ area starting at
+ (UChar*) (&((UChar*)s->arr2)[s->nblock])
+
+ These storage aliases are set up in bzCompressInit(),
+ except for the last one, which is arranged in
+ compressBlock().
+ */
+ UInt32* ptr = s->ptr;
+ UChar* block = s->block;
+ UInt16* mtfv = s->mtfv;
+
+ makeMaps_e ( s );
+ EOB = s->nInUse+1;
+
+ for (i = 0; i <= EOB; i++) s->mtfFreq[i] = 0;
+
+ wr = 0;
+ zPend = 0;
+ for (i = 0; i < s->nInUse; i++) yy[i] = (UChar) i;
+
+ for (i = 0; i < s->nblock; i++) {
+ UChar ll_i;
+ AssertD ( wr <= i, "generateMTFValues(1)" );
+ j = ptr[i]-1; if (j < 0) j += s->nblock;
+ ll_i = s->unseqToSeq[block[j]];
+ AssertD ( ll_i < s->nInUse, "generateMTFValues(2a)" );
+
+ if (yy[0] == ll_i) {
+ zPend++;
+ } else {
+
+ if (zPend > 0) {
+ zPend--;
+ while (True) {
+ if (zPend & 1) {
+ mtfv[wr] = BZ_RUNB; wr++;
+ s->mtfFreq[BZ_RUNB]++;
+ } else {
+ mtfv[wr] = BZ_RUNA; wr++;
+ s->mtfFreq[BZ_RUNA]++;
+ }
+ if (zPend < 2) break;
+ zPend = (zPend - 2) / 2;
+ };
+ zPend = 0;
+ }
+ {
+ register UChar rtmp;
+ register UChar* ryy_j;
+ register UChar rll_i;
+ rtmp = yy[1];
+ yy[1] = yy[0];
+ ryy_j = &(yy[1]);
+ rll_i = ll_i;
+ while ( rll_i != rtmp ) {
+ register UChar rtmp2;
+ ryy_j++;
+ rtmp2 = rtmp;
+ rtmp = *ryy_j;
+ *ryy_j = rtmp2;
+ };
+ yy[0] = rtmp;
+ j = ryy_j - &(yy[0]);
+ mtfv[wr] = j+1; wr++; s->mtfFreq[j+1]++;
+ }
+
+ }
+ }
+
+ if (zPend > 0) {
+ zPend--;
+ while (True) {
+ if (zPend & 1) {
+ mtfv[wr] = BZ_RUNB; wr++;
+ s->mtfFreq[BZ_RUNB]++;
+ } else {
+ mtfv[wr] = BZ_RUNA; wr++;
+ s->mtfFreq[BZ_RUNA]++;
+ }
+ if (zPend < 2) break;
+ zPend = (zPend - 2) / 2;
+ };
+ zPend = 0;
+ }
+
+ mtfv[wr] = EOB; wr++; s->mtfFreq[EOB]++;
+
+ s->nMTF = wr;
+}
+
+
+/*---------------------------------------------------*/
+#define BZ_LESSER_ICOST 0
+#define BZ_GREATER_ICOST 15
+
+static
+void sendMTFValues ( EState* s )
+{
+ Int32 v, t, i, j, gs, ge, totc, bt, bc, iter;
+ Int32 nSelectors, alphaSize, minLen, maxLen, selCtr;
+ Int32 nGroups, nBytes;
+
+ /*--
+ UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ is a global since the decoder also needs it.
+
+ Int32 code[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ Int32 rfreq[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ are also globals only used in this proc.
+ Made global to keep stack frame size small.
+ --*/
+
+
+ UInt16 cost[BZ_N_GROUPS];
+ Int32 fave[BZ_N_GROUPS];
+
+ UInt16* mtfv = s->mtfv;
+
+
+ alphaSize = s->nInUse+2;
+ for (t = 0; t < BZ_N_GROUPS; t++)
+ for (v = 0; v < alphaSize; v++)
+ s->len[t][v] = BZ_GREATER_ICOST;
+
+ /*--- Decide how many coding tables to use ---*/
+ AssertH ( s->nMTF > 0, 3001 );
+ if (s->nMTF < 200) nGroups = 2; else
+ if (s->nMTF < 600) nGroups = 3; else
+ if (s->nMTF < 1200) nGroups = 4; else
+ if (s->nMTF < 2400) nGroups = 5; else
+ nGroups = 6;
+
+ /*--- Generate an initial set of coding tables ---*/
+ {
+ Int32 nPart, remF, tFreq, aFreq;
+
+ nPart = nGroups;
+ remF = s->nMTF;
+ gs = 0;
+ while (nPart > 0) {
+ tFreq = remF / nPart;
+ ge = gs-1;
+ aFreq = 0;
+ while (aFreq < tFreq && ge < alphaSize-1) {
+ ge++;
+ aFreq += s->mtfFreq[ge];
+ }
+
+ if (ge > gs
+ && nPart != nGroups && nPart != 1
+ && ((nGroups-nPart) % 2 == 1)) {
+ aFreq -= s->mtfFreq[ge];
+ ge--;
+ }
+
+ for (v = 0; v < alphaSize; v++)
+ if (v >= gs && v <= ge)
+ s->len[nPart-1][v] = BZ_LESSER_ICOST; else
+ s->len[nPart-1][v] = BZ_GREATER_ICOST;
+
+ nPart--;
+ gs = ge+1;
+ remF -= aFreq;
+ }
+ }
+
+ /*---
+ Iterate up to BZ_N_ITERS times to improve the tables.
+ ---*/
+ for (iter = 0; iter < BZ_N_ITERS; iter++) {
+
+ for (t = 0; t < nGroups; t++) fave[t] = 0;
+
+ for (t = 0; t < nGroups; t++)
+ for (v = 0; v < alphaSize; v++)
+ s->rfreq[t][v] = 0;
+
+ /*---
+ Set up an auxiliary length table which is used to fast-track
+ the common case (nGroups == 6).
+ ---*/
+ if (nGroups == 6) {
+ for (v = 0; v < alphaSize; v++) {
+ s->len_pack[v][0] = (s->len[1][v] << 16) | s->len[0][v];
+ s->len_pack[v][1] = (s->len[3][v] << 16) | s->len[2][v];
+ s->len_pack[v][2] = (s->len[5][v] << 16) | s->len[4][v];
+ }
+ }
+
+ nSelectors = 0;
+ totc = 0;
+ gs = 0;
+ while (True) {
+
+ /*--- Set group start & end marks. --*/
+ if (gs >= s->nMTF) break;
+ ge = gs + BZ_G_SIZE - 1;
+ if (ge >= s->nMTF) ge = s->nMTF-1;
+
+ /*--
+ Calculate the cost of this group as coded
+ by each of the coding tables.
+ --*/
+ for (t = 0; t < nGroups; t++) cost[t] = 0;
+
+ if (nGroups == 6 && 50 == ge-gs+1) {
+ /*--- fast track the common case ---*/
+ register UInt32 cost01, cost23, cost45;
+ register UInt16 icv;
+ cost01 = cost23 = cost45 = 0;
+
+# define BZ_ITER(nn) \
+ icv = mtfv[gs+(nn)]; \
+ cost01 += s->len_pack[icv][0]; \
+ cost23 += s->len_pack[icv][1]; \
+ cost45 += s->len_pack[icv][2]; \
+
+ BZ_ITER(0); BZ_ITER(1); BZ_ITER(2); BZ_ITER(3); BZ_ITER(4);
+ BZ_ITER(5); BZ_ITER(6); BZ_ITER(7); BZ_ITER(8); BZ_ITER(9);
+ BZ_ITER(10); BZ_ITER(11); BZ_ITER(12); BZ_ITER(13); BZ_ITER(14);
+ BZ_ITER(15); BZ_ITER(16); BZ_ITER(17); BZ_ITER(18); BZ_ITER(19);
+ BZ_ITER(20); BZ_ITER(21); BZ_ITER(22); BZ_ITER(23); BZ_ITER(24);
+ BZ_ITER(25); BZ_ITER(26); BZ_ITER(27); BZ_ITER(28); BZ_ITER(29);
+ BZ_ITER(30); BZ_ITER(31); BZ_ITER(32); BZ_ITER(33); BZ_ITER(34);
+ BZ_ITER(35); BZ_ITER(36); BZ_ITER(37); BZ_ITER(38); BZ_ITER(39);
+ BZ_ITER(40); BZ_ITER(41); BZ_ITER(42); BZ_ITER(43); BZ_ITER(44);
+ BZ_ITER(45); BZ_ITER(46); BZ_ITER(47); BZ_ITER(48); BZ_ITER(49);
+
+# undef BZ_ITER
+
+ cost[0] = cost01 & 0xffff; cost[1] = cost01 >> 16;
+ cost[2] = cost23 & 0xffff; cost[3] = cost23 >> 16;
+ cost[4] = cost45 & 0xffff; cost[5] = cost45 >> 16;
+
+ } else {
+ /*--- slow version which correctly handles all situations ---*/
+ for (i = gs; i <= ge; i++) {
+ UInt16 icv = mtfv[i];
+ for (t = 0; t < nGroups; t++) cost[t] += s->len[t][icv];
+ }
+ }
+
+ /*--
+ Find the coding table which is best for this group,
+ and record its identity in the selector table.
+ --*/
+ bc = 999999999; bt = -1;
+ for (t = 0; t < nGroups; t++)
+ if (cost[t] < bc) { bc = cost[t]; bt = t; };
+ totc += bc;
+ fave[bt]++;
+ s->selector[nSelectors] = bt;
+ nSelectors++;
+
+ /*--
+ Increment the symbol frequencies for the selected table.
+ --*/
+ if (nGroups == 6 && 50 == ge-gs+1) {
+ /*--- fast track the common case ---*/
+
+# define BZ_ITUR(nn) s->rfreq[bt][ mtfv[gs+(nn)] ]++
+
+ BZ_ITUR(0); BZ_ITUR(1); BZ_ITUR(2); BZ_ITUR(3); BZ_ITUR(4);
+ BZ_ITUR(5); BZ_ITUR(6); BZ_ITUR(7); BZ_ITUR(8); BZ_ITUR(9);
+ BZ_ITUR(10); BZ_ITUR(11); BZ_ITUR(12); BZ_ITUR(13); BZ_ITUR(14);
+ BZ_ITUR(15); BZ_ITUR(16); BZ_ITUR(17); BZ_ITUR(18); BZ_ITUR(19);
+ BZ_ITUR(20); BZ_ITUR(21); BZ_ITUR(22); BZ_ITUR(23); BZ_ITUR(24);
+ BZ_ITUR(25); BZ_ITUR(26); BZ_ITUR(27); BZ_ITUR(28); BZ_ITUR(29);
+ BZ_ITUR(30); BZ_ITUR(31); BZ_ITUR(32); BZ_ITUR(33); BZ_ITUR(34);
+ BZ_ITUR(35); BZ_ITUR(36); BZ_ITUR(37); BZ_ITUR(38); BZ_ITUR(39);
+ BZ_ITUR(40); BZ_ITUR(41); BZ_ITUR(42); BZ_ITUR(43); BZ_ITUR(44);
+ BZ_ITUR(45); BZ_ITUR(46); BZ_ITUR(47); BZ_ITUR(48); BZ_ITUR(49);
+
+# undef BZ_ITUR
+
+ } else {
+ /*--- slow version which correctly handles all situations ---*/
+ for (i = gs; i <= ge; i++)
+ s->rfreq[bt][ mtfv[i] ]++;
+ }
+
+ gs = ge+1;
+ }
+
+ /*--
+ Recompute the tables based on the accumulated frequencies.
+ --*/
+ for (t = 0; t < nGroups; t++)
+ BZ2_hbMakeCodeLengths ( &(s->len[t][0]), &(s->rfreq[t][0]),
+ alphaSize, 20 );
+ }
+
+
+ AssertH( nGroups < 8, 3002 );
+ AssertH( nSelectors < 32768 &&
+ nSelectors <= (2 + (NSIS_COMPRESS_BZIP2_LEVEL * 100000 / BZ_G_SIZE)),
+ 3003 );
+
+
+ /*--- Compute MTF values for the selectors. ---*/
+ {
+ UChar pos[BZ_N_GROUPS], ll_i, tmp2, tmp;
+ for (i = 0; i < nGroups; i++) pos[i] = i;
+ for (i = 0; i < nSelectors; i++) {
+ ll_i = s->selector[i];
+ j = 0;
+ tmp = pos[j];
+ while ( ll_i != tmp ) {
+ j++;
+ tmp2 = tmp;
+ tmp = pos[j];
+ pos[j] = tmp2;
+ };
+ pos[0] = tmp;
+ s->selectorMtf[i] = j;
+ }
+ };
+
+ /*--- Assign actual codes for the tables. --*/
+ for (t = 0; t < nGroups; t++) {
+ minLen = 32;
+ maxLen = 0;
+ for (i = 0; i < alphaSize; i++) {
+ if (s->len[t][i] > maxLen) maxLen = s->len[t][i];
+ if (s->len[t][i] < minLen) minLen = s->len[t][i];
+ }
+ AssertH ( !(maxLen > 20), 3004 );
+ AssertH ( !(minLen < 1), 3005 );
+ BZ2_hbAssignCodes ( &(s->code[t][0]), &(s->len[t][0]),
+ minLen, maxLen, alphaSize );
+ }
+
+ /*--- Transmit the mapping table. ---*/
+ {
+ Bool inUse16[16];
+ for (i = 0; i < 16; i++) {
+ inUse16[i] = False;
+ for (j = 0; j < 16; j++)
+ if (s->inUse[i * 16 + j]) inUse16[i] = True;
+ }
+
+ nBytes = s->numZ;
+ for (i = 0; i < 16; i++)
+ if (inUse16[i]) bsW(s,1,1); else bsW(s,1,0);
+
+ for (i = 0; i < 16; i++)
+ if (inUse16[i])
+ for (j = 0; j < 16; j++) {
+ if (s->inUse[i * 16 + j]) bsW(s,1,1); else bsW(s,1,0);
+ }
+
+ }
+
+ /*--- Now the selectors. ---*/
+ nBytes = s->numZ;
+ bsW ( s, 3, nGroups );
+ bsW ( s, 15, nSelectors );
+ for (i = 0; i < nSelectors; i++) {
+ for (j = 0; j < s->selectorMtf[i]; j++) bsW(s,1,1);
+ bsW(s,1,0);
+ }
+
+ /*--- Now the coding tables. ---*/
+ nBytes = s->numZ;
+
+ for (t = 0; t < nGroups; t++) {
+ Int32 curr = s->len[t][0];
+ bsW ( s, 5, curr );
+ for (i = 0; i < alphaSize; i++) {
+ while (curr < s->len[t][i]) { bsW(s,2,2); curr++; /* 10 */ };
+ while (curr > s->len[t][i]) { bsW(s,2,3); curr--; /* 11 */ };
+ bsW ( s, 1, 0 );
+ }
+ }
+
+
+ /*--- And finally, the block data proper ---*/
+ nBytes = s->numZ;
+ selCtr = 0;
+ gs = 0;
+ while (True) {
+ if (gs >= s->nMTF) break;
+ ge = gs + BZ_G_SIZE - 1;
+ if (ge >= s->nMTF) ge = s->nMTF-1;
+ AssertH ( s->selector[selCtr] < nGroups, 3006 );
+
+ if (nGroups == 6 && 50 == ge-gs+1) {
+ /*--- fast track the common case ---*/
+ UInt16 mtfv_i;
+ UChar* s_len_sel_selCtr
+ = &(s->len[s->selector[selCtr]][0]);
+ Int32* s_code_sel_selCtr
+ = &(s->code[s->selector[selCtr]][0]);
+
+# define BZ_ITAH(nn) \
+ mtfv_i = mtfv[gs+(nn)]; \
+ bsW ( s, \
+ s_len_sel_selCtr[mtfv_i], \
+ s_code_sel_selCtr[mtfv_i] )
+
+ BZ_ITAH(0); BZ_ITAH(1); BZ_ITAH(2); BZ_ITAH(3); BZ_ITAH(4);
+ BZ_ITAH(5); BZ_ITAH(6); BZ_ITAH(7); BZ_ITAH(8); BZ_ITAH(9);
+ BZ_ITAH(10); BZ_ITAH(11); BZ_ITAH(12); BZ_ITAH(13); BZ_ITAH(14);
+ BZ_ITAH(15); BZ_ITAH(16); BZ_ITAH(17); BZ_ITAH(18); BZ_ITAH(19);
+ BZ_ITAH(20); BZ_ITAH(21); BZ_ITAH(22); BZ_ITAH(23); BZ_ITAH(24);
+ BZ_ITAH(25); BZ_ITAH(26); BZ_ITAH(27); BZ_ITAH(28); BZ_ITAH(29);
+ BZ_ITAH(30); BZ_ITAH(31); BZ_ITAH(32); BZ_ITAH(33); BZ_ITAH(34);
+ BZ_ITAH(35); BZ_ITAH(36); BZ_ITAH(37); BZ_ITAH(38); BZ_ITAH(39);
+ BZ_ITAH(40); BZ_ITAH(41); BZ_ITAH(42); BZ_ITAH(43); BZ_ITAH(44);
+ BZ_ITAH(45); BZ_ITAH(46); BZ_ITAH(47); BZ_ITAH(48); BZ_ITAH(49);
+
+# undef BZ_ITAH
+
+ } else {
+ /*--- slow version which correctly handles all situations ---*/
+ for (i = gs; i <= ge; i++) {
+ bsW ( s,
+ s->len [s->selector[selCtr]] [mtfv[i]],
+ s->code [s->selector[selCtr]] [mtfv[i]] );
+ }
+ }
+
+
+ gs = ge+1;
+ selCtr++;
+ }
+ AssertH( selCtr == nSelectors, 3007 );
+
+}
+
+
+/*---------------------------------------------------*/
+void BZ2_compressBlock ( EState* s, Bool is_last_block )
+{
+ if (s->nblock > 0) {
+
+ if (s->blockNo > 1) s->numZ = 0;
+
+
+ BZ2_blockSort ( s );
+ }
+
+ s->zbits = (UChar*) (&((UChar*)s->arr2)[s->nblock]);
+
+ /*-- If this is the first block, create the stream header. --*/
+ if (s->blockNo == 1) {
+ BZ2_bsInitWrite ( s );
+ }
+
+ if (s->nblock > 0) {
+
+ bsPutUChar ( s, 0x31 );
+
+ bsW ( s, 24, s->origPtr );
+ generateMTFValues ( s );
+ sendMTFValues ( s );
+ }
+
+
+ /*-- If this is the last block, add the stream trailer. --*/
+ if (is_last_block) {
+
+ bsPutUChar ( s, 0x17 );
+ bsFinishWrite ( s );
+ }
+}
+
+
+/*-------------------------------------------------------------*/
+/*--- end compress.c ---*/
+/*-------------------------------------------------------------*/
diff --git a/Source/bzip2/decompress.c b/Source/bzip2/decompress.c
index 675c186..bf00a67 100755
--- a/Source/bzip2/decompress.c
+++ b/Source/bzip2/decompress.c
@@ -1,534 +1,534 @@
-/*
- * This file is a part of the bzip2 compression module for NSIS.
- *
- * Copyright and license information can be found below.
- * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
- *
- * The original zlib source code is available at
- * http://www.bzip.org/
- *
- * This modification is not compatible with the original bzip2.
- *
- * This software is provided 'as-is', without any express or implied
- * warranty.
- */
-
-#include "bzlib.h"
-
-/*-------------------------------------------------------------*/
-/*--- Decompression machinery ---*/
-/*--- decompress.c ---*/
-/*-------------------------------------------------------------*/
-
-/*--
- This file is a part of bzip2 and/or libbzip2, a program and
- library for lossless, block-sorting data compression.
-
- Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
- not claim that you wrote the original software. If you use this
- software in a product, an acknowledgment in the product
- documentation would be appreciated but is not required.
-
- 3. Altered source versions must be plainly marked as such, and must
- not be misrepresented as being the original software.
-
- 4. The name of the author may not be used to endorse or promote
- products derived from this software without specific prior written
- permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- 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 AUTHOR 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.
-
- Julian Seward, Cambridge, UK.
- jseward@acm.org
- bzip2/libbzip2 version 1.0 of 21 March 2000
-
- This program is based on (at least) the work of:
- Mike Burrows
- David Wheeler
- Peter Fenwick
- Alistair Moffat
- Radford Neal
- Ian H. Witten
- Robert Sedgewick
- Jon L. Bentley
-
- For more information on these sources, see the manual.
---*/
-
-
-/*---------------------------------------------------*/
-#define RETURN(rrr) \
- { retVal = rrr; goto save_state_and_return; };
-
-
-static int NSISCALL __mygetbits(int *vtmp, int nnn, DState* s)
-{
- for (;;) {
- if (s->bsLive >= nnn) {
- UInt32 v;
- v = (s->bsBuff >>
- (s->bsLive-nnn)) & ((1 << nnn)-1);
- s->bsLive -= nnn;
- *vtmp = v;
- return 0;
- }
- if (s->avail_in == 0) return 1;
- s->bsBuff = (s->bsBuff << 8) | ((UInt32) (*((UChar*)(s->next_in))));
- s->bsLive += 8;
- s->next_in++;
- s->avail_in--;
- }
-}
-
-#define GET_BITS(lll,vvv,nnn) \
- case lll: s->state = lll; \
- if (__mygetbits(&vvv,nnn,s)) RETURN(BZ_OK)
-
-#define GET_UCHAR(lll,uuu) \
- GET_BITS(lll,uuu,8)
-
-#define GET_BIT(lll,uuu) \
- GET_BITS(lll,uuu,1)
-
-static int NSISCALL getmtf1(DState_save *sv,DState* s)
-{
- if (sv->groupPos == 0) {
- sv->groupNo++;
- if (sv->groupNo >= sv->nSelectors) return 1;
- sv->groupPos = BZ_G_SIZE;
- sv->gSel = s->selector[sv->groupNo];
- sv->gMinlen = s->minLens[sv->gSel];
- sv->gLimit = &(s->limit[sv->gSel][0]);
- sv->gPerm = &(s->perm[sv->gSel][0]);
- sv->gBase = &(s->base[sv->gSel][0]);
- }
- sv->groupPos--;
- sv->zn = sv->gMinlen;
- return 0;
-}
-
-/*---------------------------------------------------*/
-#define GET_MTF_VAL(label1,label2,lval) \
-{ \
- if (getmtf1(&sv,s)) RETURN(BZ_DATA_ERROR); \
- GET_BITS(label1, zvec, zn); \
- for (;;) { \
- if (zn > 20 /* the longest code */) RETURN(BZ_DATA_ERROR); \
- if (zvec <= gLimit[zn]) break; \
- zn++; \
- GET_BIT(label2, zj); \
- zvec = (zvec << 1) | zj; \
- }; \
- if (zvec - gBase[zn] < 0 \
- || zvec - gBase[zn] >= BZ_MAX_ALPHA_SIZE) \
- RETURN(BZ_DATA_ERROR); \
- lval = gPerm[zvec - gBase[zn]]; \
-}
-
-
-/*---------------------------------------------------*/
-Int32 NSISCALL BZ2_decompress ( DState* s )
-{
- Int32 uc;
- Int32 retVal;
- Int32 minLen, maxLen;
-
- /* stuff that needs to be saved/restored */
- DState_save sv;
-
- /*restore from the save area*/
- sv=s->save;//mini_memcpy(&sv, &(s->save), sizeof(sv));
-
- #define i (sv.i)
- #define j (sv.j)
- #define t (sv.t)
- #define alphaSize (sv.alphaSize)
- #define nGroups (sv.nGroups)
- #define nSelectors (sv.nSelectors)
- #define EOB (sv.EOB)
- #define groupNo (sv.groupNo)
- #define groupPos (sv.groupPos)
- #define nextSym (sv.nextSym)
- #define nblockMAX (sv.nblockMAX)
- #define nblock (sv.nblock)
- #define es (sv.es)
- #define N (sv.N)
- #define curr (sv.curr)
- #define zt (sv.zt)
- #define zn (sv.zn)
- #define zvec (sv.zvec)
- #define zj (sv.zj)
- #define gSel (sv.gSel)
- #define gMinlen (sv.gMinlen)
- #define gLimit (sv.gLimit)
- #define gBase (sv.gBase)
- #define gPerm (sv.gPerm)
-
- retVal = BZ_OK;
-
- switch (s->state) {
-
-
- GET_UCHAR(BZ_X_BLKHDR_1, uc);
-
- if (uc == 0x17)
- {
- s->state = BZ_X_IDLE;
- RETURN(BZ_STREAM_END);
- }
- if (uc != 0x31) RETURN(BZ_DATA_ERROR);
-
- s->origPtr = 0;
- GET_UCHAR(BZ_X_ORIGPTR_1, uc);
- s->origPtr = (s->origPtr << 8) | ((Int32)uc);
- GET_UCHAR(BZ_X_ORIGPTR_2, uc);
- s->origPtr = (s->origPtr << 8) | ((Int32)uc);
- GET_UCHAR(BZ_X_ORIGPTR_3, uc);
- s->origPtr = (s->origPtr << 8) | ((Int32)uc);
-
- if (s->origPtr < 0)
- RETURN(BZ_DATA_ERROR);
- if (s->origPtr > 10 + NSIS_COMPRESS_BZIP2_LEVEL*100000)
- RETURN(BZ_DATA_ERROR);
-
- /*--- Receive the mapping table ---*/
- for (i = 0; i < 16; i++) {
- GET_BIT(BZ_X_MAPPING_1, uc);
- if (uc == 1)
- s->inUse16[i] = True; else
- s->inUse16[i] = False;
- }
-
- for (i = 0; i < 256; i++) s->inUse[i] = False;
-
- for (i = 0; i < 16; i++)
- if (s->inUse16[i])
- for (j = 0; j < 16; j++) {
- GET_BIT(BZ_X_MAPPING_2, uc);
- if (uc == 1) s->inUse[i * 16 + j] = True;
- }
- {
- Int32 qi;
- s->nInUse = 0;
- for (qi = 0; qi < 256; qi++)
- if (s->inUse[qi])
- s->seqToUnseq[s->nInUse++] = qi;
- }
-
- if (s->nInUse == 0) RETURN(BZ_DATA_ERROR);
- alphaSize = s->nInUse+2;
-
- /*--- Now the selectors ---*/
- GET_BITS(BZ_X_SELECTOR_1, nGroups, 3);
- if (nGroups < 2 || nGroups > 6) RETURN(BZ_DATA_ERROR);
- GET_BITS(BZ_X_SELECTOR_2, nSelectors, 15);
- if (nSelectors < 1) RETURN(BZ_DATA_ERROR);
- for (i = 0; i < nSelectors; i++) {
- j = 0;
- while (True) {
- GET_BIT(BZ_X_SELECTOR_3, uc);
- if (uc == 0) break;
- j++;
- if (j >= nGroups) RETURN(BZ_DATA_ERROR);
- }
- s->selectorMtf[i] = j;
- }
-
- /*--- Undo the MTF values for the selectors. ---*/
- {
- UChar pos[BZ_N_GROUPS], tmp, v;
- for (v = 0; v < nGroups; v++) pos[v] = v;
-
- for (i = 0; i < nSelectors; i++) {
- v = s->selectorMtf[i];
- tmp = pos[v];
- while (v > 0) { pos[v] = pos[v-1]; v--; }
- pos[0] = tmp;
- s->selector[i] = tmp;
- }
- }
-
- /*--- Now the coding tables ---*/
- for (t = 0; t < nGroups; t++) {
- GET_BITS(BZ_X_CODING_1, curr, 5);
- for (i = 0; i < alphaSize; i++) {
- while (True) {
- if (curr < 1 || curr > 20) RETURN(BZ_DATA_ERROR);
- GET_BIT(BZ_X_CODING_2, uc);
- if (uc == 0) break;
- GET_BIT(BZ_X_CODING_3, uc);
- if (uc == 0) curr++; else curr--;
- }
- s->len[t][i] = curr;
- }
- }
-
- /*--- Create the Huffman decoding tables ---*/
- for (t = 0; t < nGroups; t++) {
- minLen = 32;
- maxLen = 0;
- for (i = 0; i < alphaSize; i++) {
- if (s->len[t][i] > maxLen) maxLen = s->len[t][i];
- if (s->len[t][i] < minLen) minLen = s->len[t][i];
- }
- BZ2_hbCreateDecodeTables (
- &(s->limit[t][0]),
- &(s->base[t][0]),
- &(s->perm[t][0]),
- &(s->len[t][0]),
- minLen, maxLen, alphaSize
- );
- s->minLens[t] = minLen;
- }
-
- /*--- Now the MTF values ---*/
-
- EOB = s->nInUse+1;
- nblockMAX = NSIS_COMPRESS_BZIP2_LEVEL*100000;
- groupNo = -1;
- groupPos = 0;
-
- for (i = 0; i <= 255; i++) s->unzftab[i] = 0;
-
- /*-- MTF init --*/
- {
- Int32 ii, jj, kk = MTFA_SIZE-1;
- for (ii = 256 / MTFL_SIZE - 1; ii >= 0; ii--) {
- for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
- s->mtfa[kk] = (UChar)(ii * MTFL_SIZE + jj);
- kk--;
- }
- s->mtfbase[ii] = kk + 1;
- }
- }
- /*-- end MTF init --*/
-
- nblock = 0;
- GET_MTF_VAL(BZ_X_MTF_1, BZ_X_MTF_2, nextSym);
-
- while (True) {
-
- if (nextSym == EOB) break;
-
- if (nextSym == BZ_RUNA || nextSym == BZ_RUNB) {
-
- es = -1;
- N = 1;
- while (nextSym == BZ_RUNA || nextSym == BZ_RUNB)
- {
- if (nextSym == BZ_RUNA) es += N;
- N = N << 1;
- if (nextSym == BZ_RUNB) es += N;
- GET_MTF_VAL(BZ_X_MTF_3, BZ_X_MTF_4, nextSym);
- }
-
- es++;
- uc = s->seqToUnseq[ s->mtfa[s->mtfbase[0]] ];
- s->unzftab[uc] += es;
-
-#ifdef NSIS_COMPRESS_BZIP2_SMALLMODE
- while (es > 0) {
- if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
- s->ll16[nblock] = (UInt16)uc;
- nblock++;
- es--;
- }
-#else
- while (es > 0) {
- if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
- s->tt[nblock] = (UInt32)uc;
- nblock++;
- es--;
- }
-#endif
- continue;
-
- } else {
-
- if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
-
- /*-- uc = MTF ( nextSym-1 ) --*/
- {
- Int32 ii, jj, kk, pp, lno, off;
- UInt32 nn;
- nn = (UInt32)(nextSym - 1);
-
- if (nn < MTFL_SIZE) {
- /* avoid general-case expense */
- pp = s->mtfbase[0];
- uc = s->mtfa[pp+nn];
- /*while (nn > 3) {
- Int32 z = pp+nn;
- s->mtfa[(z) ] = s->mtfa[(z)-1];
- s->mtfa[(z)-1] = s->mtfa[(z)-2];
- s->mtfa[(z)-2] = s->mtfa[(z)-3];
- s->mtfa[(z)-3] = s->mtfa[(z)-4];
- nn -= 4;
- }
- */
- while (nn > 0) {
- s->mtfa[(pp+nn)] = s->mtfa[(pp+nn)-1]; nn--;
- };
- s->mtfa[pp] = uc;
- } else {
- /* general case */
- lno = nn / MTFL_SIZE;
- off = nn % MTFL_SIZE;
- pp = s->mtfbase[lno] + off;
- uc = s->mtfa[pp];
- while (pp > s->mtfbase[lno]) {
- s->mtfa[pp] = s->mtfa[pp-1]; pp--;
- };
- s->mtfbase[lno]++;
- while (lno > 0) {
- s->mtfbase[lno]--;
- s->mtfa[s->mtfbase[lno]]
- = s->mtfa[s->mtfbase[lno-1] + MTFL_SIZE - 1];
- lno--;
- }
- s->mtfbase[0]--;
- s->mtfa[s->mtfbase[0]] = uc;
- if (s->mtfbase[0] == 0) {
- kk = MTFA_SIZE-1;
- for (ii = 256 / MTFL_SIZE-1; ii >= 0; ii--) {
- for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
- s->mtfa[kk] = s->mtfa[s->mtfbase[ii] + jj];
- kk--;
- }
- s->mtfbase[ii] = kk + 1;
- }
- }
- }
- }
- /*-- end uc = MTF ( nextSym-1 ) --*/
-
- s->unzftab[s->seqToUnseq[uc]]++;
-#ifdef NSIS_COMPRESS_BZIP2_SMALLMODE
- s->ll16[nblock] = (UInt16)(s->seqToUnseq[uc]);
-#else
- s->tt[nblock] = (UInt32)(s->seqToUnseq[uc]);
-#endif
- nblock++;
-
- GET_MTF_VAL(BZ_X_MTF_5, BZ_X_MTF_6, nextSym);
- continue;
- }
- }
-
- /* Now we know what nblock is, we can do a better sanity
- check on s->origPtr.
- */
- if (s->origPtr < 0 || s->origPtr >= nblock)
- RETURN(BZ_DATA_ERROR);
-
- s->state_out_len = 0;
- s->state_out_ch = 0;
- s->state = BZ_X_OUTPUT;
-
- /*-- Set up cftab to facilitate generation of T^(-1) --*/
- s->cftab[0] = 0;
- for (i = 1; i <= 256; i++) s->cftab[i] = s->unzftab[i-1]+s->cftab[i-1];
-// for (i = 1; i <= 256; i++) s->cftab[i] += s->cftab[i-1];
-
-#ifdef NSIS_COMPRESS_BZIP2_SMALLMODE
- {
- /*-- Make a copy of cftab, used in generation of T --*/
- for (i = 0; i <= 256; i++) s->cftabCopy[i] = s->cftab[i];
-
- /*-- compute the T vector --*/
- for (i = 0; i < nblock; i++) {
- uc = (UChar)(s->ll16[i]);
- SET_LL(i, s->cftabCopy[uc]);
- s->cftabCopy[uc]++;
- }
-
- /*-- Compute T^(-1) by pointer reversal on T --*/
- i = s->origPtr;
- j = GET_LL(i);
- do {
- Int32 tmp = GET_LL(j);
- SET_LL(j, i);
- i = j;
- j = tmp;
- }
- while (i != s->origPtr);
-
- s->tPos = s->origPtr;
- s->nblock_used = 0;
- BZ_GET_SMALL(s->k0); s->nblock_used++;
- }
-#else//!small
-
- /*-- compute the T^(-1) vector --*/
- for (i = 0; i < nblock; i++) {
- uc = (UChar)(s->tt[i] & 0xff);
- s->tt[s->cftab[uc]] |= (i << 8);
- s->cftab[uc]++;
- }
-
- s->tPos = s->tt[s->origPtr] >> 8;
- s->nblock_used = 0;
- BZ_GET_FAST(s->k0); s->nblock_used++;
-#endif
- RETURN(BZ_OK);
-
- default: AssertH ( False, 4001 );
- }
-
- AssertH ( False, 4002 );
-
- save_state_and_return:
-
- s->save=sv; //mini_memcpy(&(s->save), &sv, sizeof(sv));
-
- #undef i
- #undef j
- #undef t
- #undef alphaSize
- #undef nGroups
- #undef nSelectors
- #undef EOB
- #undef groupNo
- #undef groupPos
- #undef nextSym
- #undef nblockMAX
- #undef nblock
- #undef es
- #undef N
- #undef curr
- #undef zt
- #undef zn
- #undef zvec
- #undef zj
- #undef gSel
- #undef gMinlen
- #undef gLimit
- #undef gBase
- #undef gPerm
-
- return retVal;
-}
-
-
-/*-------------------------------------------------------------*/
-/*--- end decompress.c ---*/
-/*-------------------------------------------------------------*/
+/*
+ * This file is a part of the bzip2 compression module for NSIS.
+ *
+ * Copyright and license information can be found below.
+ * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
+ *
+ * The original zlib source code is available at
+ * http://www.bzip.org/
+ *
+ * This modification is not compatible with the original bzip2.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.
+ */
+
+#include "bzlib.h"
+
+/*-------------------------------------------------------------*/
+/*--- Decompression machinery ---*/
+/*--- decompress.c ---*/
+/*-------------------------------------------------------------*/
+
+/*--
+ This file is a part of bzip2 and/or libbzip2, a program and
+ library for lossless, block-sorting data compression.
+
+ Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
+ not claim that you wrote the original software. If you use this
+ software in a product, an acknowledgment in the product
+ documentation would be appreciated but is not required.
+
+ 3. Altered source versions must be plainly marked as such, and must
+ not be misrepresented as being the original software.
+
+ 4. The name of the author may not be used to endorse or promote
+ products derived from this software without specific prior written
+ permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ 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 AUTHOR 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.
+
+ Julian Seward, Cambridge, UK.
+ jseward@acm.org
+ bzip2/libbzip2 version 1.0 of 21 March 2000
+
+ This program is based on (at least) the work of:
+ Mike Burrows
+ David Wheeler
+ Peter Fenwick
+ Alistair Moffat
+ Radford Neal
+ Ian H. Witten
+ Robert Sedgewick
+ Jon L. Bentley
+
+ For more information on these sources, see the manual.
+--*/
+
+
+/*---------------------------------------------------*/
+#define RETURN(rrr) \
+ { retVal = rrr; goto save_state_and_return; };
+
+
+static int NSISCALL __mygetbits(int *vtmp, int nnn, DState* s)
+{
+ for (;;) {
+ if (s->bsLive >= nnn) {
+ UInt32 v;
+ v = (s->bsBuff >>
+ (s->bsLive-nnn)) & ((1 << nnn)-1);
+ s->bsLive -= nnn;
+ *vtmp = v;
+ return 0;
+ }
+ if (s->avail_in == 0) return 1;
+ s->bsBuff = (s->bsBuff << 8) | ((UInt32) (*((UChar*)(s->next_in))));
+ s->bsLive += 8;
+ s->next_in++;
+ s->avail_in--;
+ }
+}
+
+#define GET_BITS(lll,vvv,nnn) \
+ case lll: s->state = lll; \
+ if (__mygetbits(&vvv,nnn,s)) RETURN(BZ_OK)
+
+#define GET_UCHAR(lll,uuu) \
+ GET_BITS(lll,uuu,8)
+
+#define GET_BIT(lll,uuu) \
+ GET_BITS(lll,uuu,1)
+
+static int NSISCALL getmtf1(DState_save *sv,DState* s)
+{
+ if (sv->groupPos == 0) {
+ sv->groupNo++;
+ if (sv->groupNo >= sv->nSelectors) return 1;
+ sv->groupPos = BZ_G_SIZE;
+ sv->gSel = s->selector[sv->groupNo];
+ sv->gMinlen = s->minLens[sv->gSel];
+ sv->gLimit = &(s->limit[sv->gSel][0]);
+ sv->gPerm = &(s->perm[sv->gSel][0]);
+ sv->gBase = &(s->base[sv->gSel][0]);
+ }
+ sv->groupPos--;
+ sv->zn = sv->gMinlen;
+ return 0;
+}
+
+/*---------------------------------------------------*/
+#define GET_MTF_VAL(label1,label2,lval) \
+{ \
+ if (getmtf1(&sv,s)) RETURN(BZ_DATA_ERROR); \
+ GET_BITS(label1, zvec, zn); \
+ for (;;) { \
+ if (zn > 20 /* the longest code */) RETURN(BZ_DATA_ERROR); \
+ if (zvec <= gLimit[zn]) break; \
+ zn++; \
+ GET_BIT(label2, zj); \
+ zvec = (zvec << 1) | zj; \
+ }; \
+ if (zvec - gBase[zn] < 0 \
+ || zvec - gBase[zn] >= BZ_MAX_ALPHA_SIZE) \
+ RETURN(BZ_DATA_ERROR); \
+ lval = gPerm[zvec - gBase[zn]]; \
+}
+
+
+/*---------------------------------------------------*/
+Int32 NSISCALL BZ2_decompress ( DState* s )
+{
+ Int32 uc;
+ Int32 retVal;
+ Int32 minLen, maxLen;
+
+ /* stuff that needs to be saved/restored */
+ DState_save sv;
+
+ /*restore from the save area*/
+ sv=s->save;//mini_memcpy(&sv, &(s->save), sizeof(sv));
+
+ #define i (sv.i)
+ #define j (sv.j)
+ #define t (sv.t)
+ #define alphaSize (sv.alphaSize)
+ #define nGroups (sv.nGroups)
+ #define nSelectors (sv.nSelectors)
+ #define EOB (sv.EOB)
+ #define groupNo (sv.groupNo)
+ #define groupPos (sv.groupPos)
+ #define nextSym (sv.nextSym)
+ #define nblockMAX (sv.nblockMAX)
+ #define nblock (sv.nblock)
+ #define es (sv.es)
+ #define N (sv.N)
+ #define curr (sv.curr)
+ #define zt (sv.zt)
+ #define zn (sv.zn)
+ #define zvec (sv.zvec)
+ #define zj (sv.zj)
+ #define gSel (sv.gSel)
+ #define gMinlen (sv.gMinlen)
+ #define gLimit (sv.gLimit)
+ #define gBase (sv.gBase)
+ #define gPerm (sv.gPerm)
+
+ retVal = BZ_OK;
+
+ switch (s->state) {
+
+
+ GET_UCHAR(BZ_X_BLKHDR_1, uc);
+
+ if (uc == 0x17)
+ {
+ s->state = BZ_X_IDLE;
+ RETURN(BZ_STREAM_END);
+ }
+ if (uc != 0x31) RETURN(BZ_DATA_ERROR);
+
+ s->origPtr = 0;
+ GET_UCHAR(BZ_X_ORIGPTR_1, uc);
+ s->origPtr = (s->origPtr << 8) | ((Int32)uc);
+ GET_UCHAR(BZ_X_ORIGPTR_2, uc);
+ s->origPtr = (s->origPtr << 8) | ((Int32)uc);
+ GET_UCHAR(BZ_X_ORIGPTR_3, uc);
+ s->origPtr = (s->origPtr << 8) | ((Int32)uc);
+
+ if (s->origPtr < 0)
+ RETURN(BZ_DATA_ERROR);
+ if (s->origPtr > 10 + NSIS_COMPRESS_BZIP2_LEVEL*100000)
+ RETURN(BZ_DATA_ERROR);
+
+ /*--- Receive the mapping table ---*/
+ for (i = 0; i < 16; i++) {
+ GET_BIT(BZ_X_MAPPING_1, uc);
+ if (uc == 1)
+ s->inUse16[i] = True; else
+ s->inUse16[i] = False;
+ }
+
+ for (i = 0; i < 256; i++) s->inUse[i] = False;
+
+ for (i = 0; i < 16; i++)
+ if (s->inUse16[i])
+ for (j = 0; j < 16; j++) {
+ GET_BIT(BZ_X_MAPPING_2, uc);
+ if (uc == 1) s->inUse[i * 16 + j] = True;
+ }
+ {
+ Int32 qi;
+ s->nInUse = 0;
+ for (qi = 0; qi < 256; qi++)
+ if (s->inUse[qi])
+ s->seqToUnseq[s->nInUse++] = qi;
+ }
+
+ if (s->nInUse == 0) RETURN(BZ_DATA_ERROR);
+ alphaSize = s->nInUse+2;
+
+ /*--- Now the selectors ---*/
+ GET_BITS(BZ_X_SELECTOR_1, nGroups, 3);
+ if (nGroups < 2 || nGroups > 6) RETURN(BZ_DATA_ERROR);
+ GET_BITS(BZ_X_SELECTOR_2, nSelectors, 15);
+ if (nSelectors < 1) RETURN(BZ_DATA_ERROR);
+ for (i = 0; i < nSelectors; i++) {
+ j = 0;
+ while (True) {
+ GET_BIT(BZ_X_SELECTOR_3, uc);
+ if (uc == 0) break;
+ j++;
+ if (j >= nGroups) RETURN(BZ_DATA_ERROR);
+ }
+ s->selectorMtf[i] = j;
+ }
+
+ /*--- Undo the MTF values for the selectors. ---*/
+ {
+ UChar pos[BZ_N_GROUPS], tmp, v;
+ for (v = 0; v < nGroups; v++) pos[v] = v;
+
+ for (i = 0; i < nSelectors; i++) {
+ v = s->selectorMtf[i];
+ tmp = pos[v];
+ while (v > 0) { pos[v] = pos[v-1]; v--; }
+ pos[0] = tmp;
+ s->selector[i] = tmp;
+ }
+ }
+
+ /*--- Now the coding tables ---*/
+ for (t = 0; t < nGroups; t++) {
+ GET_BITS(BZ_X_CODING_1, curr, 5);
+ for (i = 0; i < alphaSize; i++) {
+ while (True) {
+ if (curr < 1 || curr > 20) RETURN(BZ_DATA_ERROR);
+ GET_BIT(BZ_X_CODING_2, uc);
+ if (uc == 0) break;
+ GET_BIT(BZ_X_CODING_3, uc);
+ if (uc == 0) curr++; else curr--;
+ }
+ s->len[t][i] = curr;
+ }
+ }
+
+ /*--- Create the Huffman decoding tables ---*/
+ for (t = 0; t < nGroups; t++) {
+ minLen = 32;
+ maxLen = 0;
+ for (i = 0; i < alphaSize; i++) {
+ if (s->len[t][i] > maxLen) maxLen = s->len[t][i];
+ if (s->len[t][i] < minLen) minLen = s->len[t][i];
+ }
+ BZ2_hbCreateDecodeTables (
+ &(s->limit[t][0]),
+ &(s->base[t][0]),
+ &(s->perm[t][0]),
+ &(s->len[t][0]),
+ minLen, maxLen, alphaSize
+ );
+ s->minLens[t] = minLen;
+ }
+
+ /*--- Now the MTF values ---*/
+
+ EOB = s->nInUse+1;
+ nblockMAX = NSIS_COMPRESS_BZIP2_LEVEL*100000;
+ groupNo = -1;
+ groupPos = 0;
+
+ for (i = 0; i <= 255; i++) s->unzftab[i] = 0;
+
+ /*-- MTF init --*/
+ {
+ Int32 ii, jj, kk = MTFA_SIZE-1;
+ for (ii = 256 / MTFL_SIZE - 1; ii >= 0; ii--) {
+ for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
+ s->mtfa[kk] = (UChar)(ii * MTFL_SIZE + jj);
+ kk--;
+ }
+ s->mtfbase[ii] = kk + 1;
+ }
+ }
+ /*-- end MTF init --*/
+
+ nblock = 0;
+ GET_MTF_VAL(BZ_X_MTF_1, BZ_X_MTF_2, nextSym);
+
+ while (True) {
+
+ if (nextSym == EOB) break;
+
+ if (nextSym == BZ_RUNA || nextSym == BZ_RUNB) {
+
+ es = -1;
+ N = 1;
+ while (nextSym == BZ_RUNA || nextSym == BZ_RUNB)
+ {
+ if (nextSym == BZ_RUNA) es += N;
+ N = N << 1;
+ if (nextSym == BZ_RUNB) es += N;
+ GET_MTF_VAL(BZ_X_MTF_3, BZ_X_MTF_4, nextSym);
+ }
+
+ es++;
+ uc = s->seqToUnseq[ s->mtfa[s->mtfbase[0]] ];
+ s->unzftab[uc] += es;
+
+#ifdef NSIS_COMPRESS_BZIP2_SMALLMODE
+ while (es > 0) {
+ if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
+ s->ll16[nblock] = (UInt16)uc;
+ nblock++;
+ es--;
+ }
+#else
+ while (es > 0) {
+ if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
+ s->tt[nblock] = (UInt32)uc;
+ nblock++;
+ es--;
+ }
+#endif
+ continue;
+
+ } else {
+
+ if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
+
+ /*-- uc = MTF ( nextSym-1 ) --*/
+ {
+ Int32 ii, jj, kk, pp, lno, off;
+ UInt32 nn;
+ nn = (UInt32)(nextSym - 1);
+
+ if (nn < MTFL_SIZE) {
+ /* avoid general-case expense */
+ pp = s->mtfbase[0];
+ uc = s->mtfa[pp+nn];
+ /*while (nn > 3) {
+ Int32 z = pp+nn;
+ s->mtfa[(z) ] = s->mtfa[(z)-1];
+ s->mtfa[(z)-1] = s->mtfa[(z)-2];
+ s->mtfa[(z)-2] = s->mtfa[(z)-3];
+ s->mtfa[(z)-3] = s->mtfa[(z)-4];
+ nn -= 4;
+ }
+ */
+ while (nn > 0) {
+ s->mtfa[(pp+nn)] = s->mtfa[(pp+nn)-1]; nn--;
+ };
+ s->mtfa[pp] = uc;
+ } else {
+ /* general case */
+ lno = nn / MTFL_SIZE;
+ off = nn % MTFL_SIZE;
+ pp = s->mtfbase[lno] + off;
+ uc = s->mtfa[pp];
+ while (pp > s->mtfbase[lno]) {
+ s->mtfa[pp] = s->mtfa[pp-1]; pp--;
+ };
+ s->mtfbase[lno]++;
+ while (lno > 0) {
+ s->mtfbase[lno]--;
+ s->mtfa[s->mtfbase[lno]]
+ = s->mtfa[s->mtfbase[lno-1] + MTFL_SIZE - 1];
+ lno--;
+ }
+ s->mtfbase[0]--;
+ s->mtfa[s->mtfbase[0]] = uc;
+ if (s->mtfbase[0] == 0) {
+ kk = MTFA_SIZE-1;
+ for (ii = 256 / MTFL_SIZE-1; ii >= 0; ii--) {
+ for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
+ s->mtfa[kk] = s->mtfa[s->mtfbase[ii] + jj];
+ kk--;
+ }
+ s->mtfbase[ii] = kk + 1;
+ }
+ }
+ }
+ }
+ /*-- end uc = MTF ( nextSym-1 ) --*/
+
+ s->unzftab[s->seqToUnseq[uc]]++;
+#ifdef NSIS_COMPRESS_BZIP2_SMALLMODE
+ s->ll16[nblock] = (UInt16)(s->seqToUnseq[uc]);
+#else
+ s->tt[nblock] = (UInt32)(s->seqToUnseq[uc]);
+#endif
+ nblock++;
+
+ GET_MTF_VAL(BZ_X_MTF_5, BZ_X_MTF_6, nextSym);
+ continue;
+ }
+ }
+
+ /* Now we know what nblock is, we can do a better sanity
+ check on s->origPtr.
+ */
+ if (s->origPtr < 0 || s->origPtr >= nblock)
+ RETURN(BZ_DATA_ERROR);
+
+ s->state_out_len = 0;
+ s->state_out_ch = 0;
+ s->state = BZ_X_OUTPUT;
+
+ /*-- Set up cftab to facilitate generation of T^(-1) --*/
+ s->cftab[0] = 0;
+ for (i = 1; i <= 256; i++) s->cftab[i] = s->unzftab[i-1]+s->cftab[i-1];
+// for (i = 1; i <= 256; i++) s->cftab[i] += s->cftab[i-1];
+
+#ifdef NSIS_COMPRESS_BZIP2_SMALLMODE
+ {
+ /*-- Make a copy of cftab, used in generation of T --*/
+ for (i = 0; i <= 256; i++) s->cftabCopy[i] = s->cftab[i];
+
+ /*-- compute the T vector --*/
+ for (i = 0; i < nblock; i++) {
+ uc = (UChar)(s->ll16[i]);
+ SET_LL(i, s->cftabCopy[uc]);
+ s->cftabCopy[uc]++;
+ }
+
+ /*-- Compute T^(-1) by pointer reversal on T --*/
+ i = s->origPtr;
+ j = GET_LL(i);
+ do {
+ Int32 tmp = GET_LL(j);
+ SET_LL(j, i);
+ i = j;
+ j = tmp;
+ }
+ while (i != s->origPtr);
+
+ s->tPos = s->origPtr;
+ s->nblock_used = 0;
+ BZ_GET_SMALL(s->k0); s->nblock_used++;
+ }
+#else//!small
+
+ /*-- compute the T^(-1) vector --*/
+ for (i = 0; i < nblock; i++) {
+ uc = (UChar)(s->tt[i] & 0xff);
+ s->tt[s->cftab[uc]] |= (i << 8);
+ s->cftab[uc]++;
+ }
+
+ s->tPos = s->tt[s->origPtr] >> 8;
+ s->nblock_used = 0;
+ BZ_GET_FAST(s->k0); s->nblock_used++;
+#endif
+ RETURN(BZ_OK);
+
+ default: AssertH ( False, 4001 );
+ }
+
+ AssertH ( False, 4002 );
+
+ save_state_and_return:
+
+ s->save=sv; //mini_memcpy(&(s->save), &sv, sizeof(sv));
+
+ #undef i
+ #undef j
+ #undef t
+ #undef alphaSize
+ #undef nGroups
+ #undef nSelectors
+ #undef EOB
+ #undef groupNo
+ #undef groupPos
+ #undef nextSym
+ #undef nblockMAX
+ #undef nblock
+ #undef es
+ #undef N
+ #undef curr
+ #undef zt
+ #undef zn
+ #undef zvec
+ #undef zj
+ #undef gSel
+ #undef gMinlen
+ #undef gLimit
+ #undef gBase
+ #undef gPerm
+
+ return retVal;
+}
+
+
+/*-------------------------------------------------------------*/
+/*--- end decompress.c ---*/
+/*-------------------------------------------------------------*/
diff --git a/Source/bzip2/huffman.c b/Source/bzip2/huffman.c
index d36ccb0..1273e60 100755
--- a/Source/bzip2/huffman.c
+++ b/Source/bzip2/huffman.c
@@ -1,244 +1,244 @@
-/*
- * This file is a part of the bzip2 compression module for NSIS.
- *
- * Copyright and license information can be found below.
- * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
- *
- * The original zlib source code is available at
- * http://www.bzip.org/
- *
- * This modification is not compatible with the original bzip2.
- *
- * This software is provided 'as-is', without any express or implied
- * warranty.
- */
-
-#include "bzlib.h"
-
-/*-------------------------------------------------------------*/
-/*--- Huffman coding low-level stuff ---*/
-/*--- huffman.c ---*/
-/*-------------------------------------------------------------*/
-
-/*--
- This file is a part of bzip2 and/or libbzip2, a program and
- library for lossless, block-sorting data compression.
-
- Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
- not claim that you wrote the original software. If you use this
- software in a product, an acknowledgment in the product
- documentation would be appreciated but is not required.
-
- 3. Altered source versions must be plainly marked as such, and must
- not be misrepresented as being the original software.
-
- 4. The name of the author may not be used to endorse or promote
- products derived from this software without specific prior written
- permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
- 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 AUTHOR 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.
-
- Julian Seward, Cambridge, UK.
- jseward@acm.org
- bzip2/libbzip2 version 1.0 of 21 March 2000
-
- This program is based on (at least) the work of:
- Mike Burrows
- David Wheeler
- Peter Fenwick
- Alistair Moffat
- Radford Neal
- Ian H. Witten
- Robert Sedgewick
- Jon L. Bentley
-
- For more information on these sources, see the manual.
---*/
-
-#ifndef EXEHEAD
-/*---------------------------------------------------*/
-#define WEIGHTOF(zz0) ((zz0) & 0xffffff00)
-#define DEPTHOF(zz1) ((zz1) & 0x000000ff)
-#define MYMAX(zz2,zz3) ((zz2) > (zz3) ? (zz2) : (zz3))
-
-#define ADDWEIGHTS(zw1,zw2) \
- (WEIGHTOF(zw1)+WEIGHTOF(zw2)) | \
- (1 + MYMAX(DEPTHOF(zw1),DEPTHOF(zw2)))
-
-#define UPHEAP(z) \
-{ \
- Int32 zz, tmp; \
- zz = z; tmp = heap[zz]; \
- while (weight[tmp] < weight[heap[zz >> 1]]) { \
- heap[zz] = heap[zz >> 1]; \
- zz >>= 1; \
- } \
- heap[zz] = tmp; \
-}
-
-#define DOWNHEAP(z) \
-{ \
- Int32 zz, yy, tmp; \
- zz = z; tmp = heap[zz]; \
- while (True) { \
- yy = zz << 1; \
- if (yy > nHeap) break; \
- if (yy < nHeap && \
- weight[heap[yy+1]] < weight[heap[yy]]) \
- yy++; \
- if (weight[tmp] < weight[heap[yy]]) break; \
- heap[zz] = heap[yy]; \
- zz = yy; \
- } \
- heap[zz] = tmp; \
-}
-
-
-/*---------------------------------------------------*/
-void BZ2_hbMakeCodeLengths ( UChar *len,
- Int32 *freq,
- Int32 alphaSize,
- Int32 maxLen )
-{
- /*--
- Nodes and heap entries run from 1. Entry 0
- for both the heap and nodes is a sentinel.
- --*/
- Int32 nNodes, nHeap, n1, n2, i, j, k;
- Bool tooLong;
-
- static Int32 heap [ BZ_MAX_ALPHA_SIZE + 2 ];
- static Int32 weight [ BZ_MAX_ALPHA_SIZE * 2 ];
- static Int32 parent [ BZ_MAX_ALPHA_SIZE * 2 ];
-
- for (i = 0; i < alphaSize; i++)
- weight[i+1] = (freq[i] == 0 ? 1 : freq[i]) << 8;
-
- while (True) {
-
- nNodes = alphaSize;
- nHeap = 0;
-
- heap[0] = 0;
- weight[0] = 0;
- parent[0] = -2;
-
- for (i = 1; i <= alphaSize; i++) {
- parent[i] = -1;
- nHeap++;
- heap[nHeap] = i;
- UPHEAP(nHeap);
- }
-
- AssertH( nHeap < (BZ_MAX_ALPHA_SIZE+2), 2001 );
-
- while (nHeap > 1) {
- n1 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1);
- n2 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1);
- nNodes++;
- parent[n1] = parent[n2] = nNodes;
- weight[nNodes] = ADDWEIGHTS(weight[n1], weight[n2]);
- parent[nNodes] = -1;
- nHeap++;
- heap[nHeap] = nNodes;
- UPHEAP(nHeap);
- }
-
- AssertH( nNodes < (BZ_MAX_ALPHA_SIZE * 2), 2002 );
-
- tooLong = False;
- for (i = 1; i <= alphaSize; i++) {
- j = 0;
- k = i;
- while (parent[k] >= 0) { k = parent[k]; j++; }
- len[i-1] = j;
- if (j > maxLen) tooLong = True;
- }
-
- if (! tooLong) break;
-
- for (i = 1; i < alphaSize; i++) {
- j = weight[i] >> 8;
- j = 1 + (j / 2);
- weight[i] = j << 8;
- }
- }
-}
-
-
-/*---------------------------------------------------*/
-void BZ2_hbAssignCodes ( Int32 *code,
- UChar *length,
- Int32 minLen,
- Int32 maxLen,
- Int32 alphaSize )
-{
- Int32 n, vec, i;
-
- vec = 0;
- for (n = minLen; n <= maxLen; n++) {
- for (i = 0; i < alphaSize; i++)
- if (length[i] == n) { code[i] = vec; vec++; };
- vec <<= 1;
- }
-}
-#endif
-
-
-/*---------------------------------------------------*/
-void NSISCALL
-BZ2_hbCreateDecodeTables ( Int32 *limit,
- Int32 *base,
- Int32 *perm,
- UChar *length,
- Int32 minLen,
- Int32 maxLen,
- Int32 alphaSize )
-{
- Int32 pp, i, j, vec;
-
- pp = 0;
- for (i = minLen; i <= maxLen; i++)
- for (j = 0; j < alphaSize; j++)
- if (length[j] == i) { perm[pp] = j; pp++; };
-
- for (i = 0; i < BZ_MAX_CODE_LEN; i++) base[i] = 0;
- for (i = 0; i < alphaSize; i++) base[length[i]+1]++;
-
- for (i = 1; i < BZ_MAX_CODE_LEN; i++) base[i] += base[i-1];
-
- for (i = 0; i < BZ_MAX_CODE_LEN; i++) limit[i] = 0;
- vec = 0;
-
- for (i = minLen; i <= maxLen; i++) {
- vec += (base[i+1] - base[i]);
- limit[i] = vec-1;
- vec <<= 1;
- }
- for (i = minLen + 1; i <= maxLen; i++)
- base[i] = ((limit[i-1] + 1) << 1) - base[i];
-}
-
-
-/*-------------------------------------------------------------*/
-/*--- end huffman.c ---*/
-/*-------------------------------------------------------------*/
+/*
+ * This file is a part of the bzip2 compression module for NSIS.
+ *
+ * Copyright and license information can be found below.
+ * Modifications Copyright (C) 1999-2007 Nullsoft and Contributors
+ *
+ * The original zlib source code is available at
+ * http://www.bzip.org/
+ *
+ * This modification is not compatible with the original bzip2.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.
+ */
+
+#include "bzlib.h"
+
+/*-------------------------------------------------------------*/
+/*--- Huffman coding low-level stuff ---*/
+/*--- huffman.c ---*/
+/*-------------------------------------------------------------*/
+
+/*--
+ This file is a part of bzip2 and/or libbzip2, a program and
+ library for lossless, block-sorting data compression.
+
+ Copyright (C) 1996-2000 Julian R Seward. 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. The origin of this software must not be misrepresented; you must
+ not claim that you wrote the original software. If you use this
+ software in a product, an acknowledgment in the product
+ documentation would be appreciated but is not required.
+
+ 3. Altered source versions must be plainly marked as such, and must
+ not be misrepresented as being the original software.
+
+ 4. The name of the author may not be used to endorse or promote
+ products derived from this software without specific prior written
+ permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ 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 AUTHOR 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.
+
+ Julian Seward, Cambridge, UK.
+ jseward@acm.org
+ bzip2/libbzip2 version 1.0 of 21 March 2000
+
+ This program is based on (at least) the work of:
+ Mike Burrows
+ David Wheeler
+ Peter Fenwick
+ Alistair Moffat
+ Radford Neal
+ Ian H. Witten
+ Robert Sedgewick
+ Jon L. Bentley
+
+ For more information on these sources, see the manual.
+--*/
+
+#ifndef EXEHEAD
+/*---------------------------------------------------*/
+#define WEIGHTOF(zz0) ((zz0) & 0xffffff00)
+#define DEPTHOF(zz1) ((zz1) & 0x000000ff)
+#define MYMAX(zz2,zz3) ((zz2) > (zz3) ? (zz2) : (zz3))
+
+#define ADDWEIGHTS(zw1,zw2) \
+ (WEIGHTOF(zw1)+WEIGHTOF(zw2)) | \
+ (1 + MYMAX(DEPTHOF(zw1),DEPTHOF(zw2)))
+
+#define UPHEAP(z) \
+{ \
+ Int32 zz, tmp; \
+ zz = z; tmp = heap[zz]; \
+ while (weight[tmp] < weight[heap[zz >> 1]]) { \
+ heap[zz] = heap[zz >> 1]; \
+ zz >>= 1; \
+ } \
+ heap[zz] = tmp; \
+}
+
+#define DOWNHEAP(z) \
+{ \
+ Int32 zz, yy, tmp; \
+ zz = z; tmp = heap[zz]; \
+ while (True) { \
+ yy = zz << 1; \
+ if (yy > nHeap) break; \
+ if (yy < nHeap && \
+ weight[heap[yy+1]] < weight[heap[yy]]) \
+ yy++; \
+ if (weight[tmp] < weight[heap[yy]]) break; \
+ heap[zz] = heap[yy]; \
+ zz = yy; \
+ } \
+ heap[zz] = tmp; \
+}
+
+
+/*---------------------------------------------------*/
+void BZ2_hbMakeCodeLengths ( UChar *len,
+ Int32 *freq,
+ Int32 alphaSize,
+ Int32 maxLen )
+{
+ /*--
+ Nodes and heap entries run from 1. Entry 0
+ for both the heap and nodes is a sentinel.
+ --*/
+ Int32 nNodes, nHeap, n1, n2, i, j, k;
+ Bool tooLong;
+
+ static Int32 heap [ BZ_MAX_ALPHA_SIZE + 2 ];
+ static Int32 weight [ BZ_MAX_ALPHA_SIZE * 2 ];
+ static Int32 parent [ BZ_MAX_ALPHA_SIZE * 2 ];
+
+ for (i = 0; i < alphaSize; i++)
+ weight[i+1] = (freq[i] == 0 ? 1 : freq[i]) << 8;
+
+ while (True) {
+
+ nNodes = alphaSize;
+ nHeap = 0;
+
+ heap[0] = 0;
+ weight[0] = 0;
+ parent[0] = -2;
+
+ for (i = 1; i <= alphaSize; i++) {
+ parent[i] = -1;
+ nHeap++;
+ heap[nHeap] = i;
+ UPHEAP(nHeap);
+ }
+
+ AssertH( nHeap < (BZ_MAX_ALPHA_SIZE+2), 2001 );
+
+ while (nHeap > 1) {
+ n1 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1);
+ n2 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1);
+ nNodes++;
+ parent[n1] = parent[n2] = nNodes;
+ weight[nNodes] = ADDWEIGHTS(weight[n1], weight[n2]);
+ parent[nNodes] = -1;
+ nHeap++;
+ heap[nHeap] = nNodes;
+ UPHEAP(nHeap);
+ }
+
+ AssertH( nNodes < (BZ_MAX_ALPHA_SIZE * 2), 2002 );
+
+ tooLong = False;
+ for (i = 1; i <= alphaSize; i++) {
+ j = 0;
+ k = i;
+ while (parent[k] >= 0) { k = parent[k]; j++; }
+ len[i-1] = j;
+ if (j > maxLen) tooLong = True;
+ }
+
+ if (! tooLong) break;
+
+ for (i = 1; i < alphaSize; i++) {
+ j = weight[i] >> 8;
+ j = 1 + (j / 2);
+ weight[i] = j << 8;
+ }
+ }
+}
+
+
+/*---------------------------------------------------*/
+void BZ2_hbAssignCodes ( Int32 *code,
+ UChar *length,
+ Int32 minLen,
+ Int32 maxLen,
+ Int32 alphaSize )
+{
+ Int32 n, vec, i;
+
+ vec = 0;
+ for (n = minLen; n <= maxLen; n++) {
+ for (i = 0; i < alphaSize; i++)
+ if (length[i] == n) { code[i] = vec; vec++; };
+ vec <<= 1;
+ }
+}
+#endif
+
+
+/*---------------------------------------------------*/
+void NSISCALL
+BZ2_hbCreateDecodeTables ( Int32 *limit,
+ Int32 *base,
+ Int32 *perm,
+ UChar *length,
+ Int32 minLen,
+ Int32 maxLen,
+ Int32 alphaSize )
+{
+ Int32 pp, i, j, vec;
+
+ pp = 0;
+ for (i = minLen; i <= maxLen; i++)
+ for (j = 0; j < alphaSize; j++)
+ if (length[j] == i) { perm[pp] = j; pp++; };
+
+ for (i = 0; i < BZ_MAX_CODE_LEN; i++) base[i] = 0;
+ for (i = 0; i < alphaSize; i++) base[length[i]+1]++;
+
+ for (i = 1; i < BZ_MAX_CODE_LEN; i++) base[i] += base[i-1];
+
+ for (i = 0; i < BZ_MAX_CODE_LEN; i++) limit[i] = 0;
+ vec = 0;
+
+ for (i = minLen; i <= maxLen; i++) {
+ vec += (base[i+1] - base[i]);
+ limit[i] = vec-1;
+ vec <<= 1;
+ }
+ for (i = minLen + 1; i <= maxLen; i++)
+ base[i] = ((limit[i-1] + 1) << 1) - base[i];
+}
+
+
+/*-------------------------------------------------------------*/
+/*--- end huffman.c ---*/
+/*-------------------------------------------------------------*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-02 06:45:06 +0000