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-rw-r--r--archival/bz/LICENSE44
-rw-r--r--archival/bz/README90
-rw-r--r--archival/bz/blocksort.c1128
-rw-r--r--archival/bz/bzlib.c433
-rw-r--r--archival/bz/bzlib.h63
-rw-r--r--archival/bz/bzlib_private.h234
-rw-r--r--archival/bz/compress.c671
-rw-r--r--archival/bz/crctable.c105
-rw-r--r--archival/bz/huffman.c188
-rw-r--r--archival/bz/randtable.c85
10 files changed, 3041 insertions, 0 deletions
diff --git a/archival/bz/LICENSE b/archival/bz/LICENSE
new file mode 100644
index 000000000..f01f08022
--- /dev/null
+++ b/archival/bz/LICENSE
@@ -0,0 +1,44 @@
+bzip2 applet in busybox is based on lightly-modified source
+of bzip2 version 1.0.4. bzip2 source is distributed
+under the following conditions (copied verbatim from LICENSE file)
+===========================================================
+
+
+This program, "bzip2", the associated library "libbzip2", and all
+documentation, are copyright (C) 1996-2006 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@bzip.org
+bzip2/libbzip2 version 1.0.4 of 20 December 2006
diff --git a/archival/bz/README b/archival/bz/README
new file mode 100644
index 000000000..ef06d67da
--- /dev/null
+++ b/archival/bz/README
@@ -0,0 +1,90 @@
+This file is an abridged version of README from bizp2 1.0.4
+Build instructions (which are not relevant to busyboxed bzip2)
+are removed.
+===========================================================
+
+
+This is the README for bzip2/libzip2.
+This version is fully compatible with the previous public releases.
+
+------------------------------------------------------------------
+This file is part of bzip2/libbzip2, a program and library for
+lossless, block-sorting data compression.
+
+bzip2/libbzip2 version 1.0.4 of 20 December 2006
+Copyright (C) 1996-2006 Julian Seward <jseward@bzip.org>
+
+Please read the WARNING, DISCLAIMER and PATENTS sections in this file.
+
+This program is released under the terms of the license contained
+in the file LICENSE.
+------------------------------------------------------------------
+
+Please read and be aware of the following:
+
+
+WARNING:
+
+ This program and library (attempts to) compress data by
+ performing several non-trivial transformations on it.
+ Unless you are 100% familiar with *all* the algorithms
+ contained herein, and with the consequences of modifying them,
+ you should NOT meddle with the compression or decompression
+ machinery. Incorrect changes can and very likely *will*
+ lead to disastrous loss of data.
+
+
+DISCLAIMER:
+
+ I TAKE NO RESPONSIBILITY FOR ANY LOSS OF DATA ARISING FROM THE
+ USE OF THIS PROGRAM/LIBRARY, HOWSOEVER CAUSED.
+
+ Every compression of a file implies an assumption that the
+ compressed file can be decompressed to reproduce the original.
+ Great efforts in design, coding and testing have been made to
+ ensure that this program works correctly. However, the complexity
+ of the algorithms, and, in particular, the presence of various
+ special cases in the code which occur with very low but non-zero
+ probability make it impossible to rule out the possibility of bugs
+ remaining in the program. DO NOT COMPRESS ANY DATA WITH THIS
+ PROGRAM UNLESS YOU ARE PREPARED TO ACCEPT THE POSSIBILITY, HOWEVER
+ SMALL, THAT THE DATA WILL NOT BE RECOVERABLE.
+
+ That is not to say this program is inherently unreliable.
+ Indeed, I very much hope the opposite is true. bzip2/libbzip2
+ has been carefully constructed and extensively tested.
+
+
+PATENTS:
+
+ To the best of my knowledge, bzip2/libbzip2 does not use any
+ patented algorithms. However, I do not have the resources
+ to carry out a patent search. Therefore I cannot give any
+ guarantee of the above statement.
+
+
+I hope you find bzip2 useful. Feel free to contact me at
+ jseward@bzip.org
+if you have any suggestions or queries. Many people mailed me with
+comments, suggestions and patches after the releases of bzip-0.15,
+bzip-0.21, and bzip2 versions 0.1pl2, 0.9.0, 0.9.5, 1.0.0, 1.0.1,
+1.0.2 and 1.0.3, and the changes in bzip2 are largely a result of this
+feedback. I thank you for your comments.
+
+bzip2's "home" is http://www.bzip.org/
+
+Julian Seward
+jseward@bzip.org
+Cambridge, UK.
+
+18 July 1996 (version 0.15)
+25 August 1996 (version 0.21)
+ 7 August 1997 (bzip2, version 0.1)
+29 August 1997 (bzip2, version 0.1pl2)
+23 August 1998 (bzip2, version 0.9.0)
+ 8 June 1999 (bzip2, version 0.9.5)
+ 4 Sept 1999 (bzip2, version 0.9.5d)
+ 5 May 2000 (bzip2, version 1.0pre8)
+30 December 2001 (bzip2, version 1.0.2pre1)
+15 February 2005 (bzip2, version 1.0.3)
+20 December 2006 (bzip2, version 1.0.4)
diff --git a/archival/bz/blocksort.c b/archival/bz/blocksort.c
new file mode 100644
index 000000000..7d2856ba7
--- /dev/null
+++ b/archival/bz/blocksort.c
@@ -0,0 +1,1128 @@
+/*
+ * bzip2 is written by Julian Seward <jseward@bzip.org>.
+ * Adapted for busybox by Denys Vlasenko <vda.linux@googlemail.com>.
+ * See README and LICENSE files in this directory for more information.
+ */
+
+/*-------------------------------------------------------------*/
+/*--- Block sorting machinery ---*/
+/*--- blocksort.c ---*/
+/*-------------------------------------------------------------*/
+
+/* ------------------------------------------------------------------
+This file is part of bzip2/libbzip2, a program and library for
+lossless, block-sorting data compression.
+
+bzip2/libbzip2 version 1.0.4 of 20 December 2006
+Copyright (C) 1996-2006 Julian Seward <jseward@bzip.org>
+
+Please read the WARNING, DISCLAIMER and PATENTS sections in the
+README file.
+
+This program is released under the terms of the license contained
+in the file LICENSE.
+------------------------------------------------------------------ */
+
+/* #include "bzlib_private.h" */
+
+/*---------------------------------------------*/
+/*--- Fallback O(N log(N)^2) sorting ---*/
+/*--- algorithm, for repetitive blocks ---*/
+/*---------------------------------------------*/
+
+/*---------------------------------------------*/
+static
+inline
+void fallbackSimpleSort(uint32_t* fmap,
+ uint32_t* eclass,
+ int32_t lo,
+ int32_t hi)
+{
+ int32_t i, j, tmp;
+ uint32_t 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_t zztmp = zz1; \
+ zz1 = zz2; \
+ zz2 = zztmp; \
+}
+
+#define fvswap(zzp1, zzp2, zzn) \
+{ \
+ int32_t yyp1 = (zzp1); \
+ int32_t yyp2 = (zzp2); \
+ int32_t 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_t* fmap,
+ uint32_t* eclass,
+ int32_t loSt,
+ int32_t hiSt)
+{
+ int32_t unLo, unHi, ltLo, gtHi, n, m;
+ int32_t sp, lo, hi;
+ uint32_t med, r, r3;
+ int32_t stackLo[FALLBACK_QSORT_STACK_SIZE];
+ int32_t stackHi[FALLBACK_QSORT_STACK_SIZE];
+
+ r = 0;
+
+ sp = 0;
+ fpush(loSt, hiSt);
+
+ while (sp > 0) {
+ AssertH(sp < FALLBACK_QSORT_STACK_SIZE - 1, 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_t)eclass[fmap[unLo]] - (int32_t)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_t)eclass[fmap[unHi]] - (int32_t)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_t* fmap,
+ uint32_t* eclass,
+ uint32_t* bhtab,
+ int32_t nblock)
+{
+ int32_t ftab[257];
+ int32_t ftabCopy[256];
+ int32_t H, i, j, k, l, r, cc, cc1;
+ int32_t nNotDone;
+ int32_t 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
+inline
+Bool mainGtU(
+ uint32_t i1,
+ uint32_t i2,
+ UChar* block,
+ uint16_t* quadrant,
+ uint32_t nblock,
+ int32_t* budget)
+{
+ int32_t k;
+ UChar c1, c2;
+ uint16_t s1, s2;
+
+///unrolling
+ 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;
+
+///unrolling
+ 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
+const int32_t incs[14] = {
+ 1, 4, 13, 40, 121, 364, 1093, 3280,
+ 9841, 29524, 88573, 265720,
+ 797161, 2391484
+};
+
+static
+void mainSimpleSort(uint32_t* ptr,
+ UChar* block,
+ uint16_t* quadrant,
+ int32_t nblock,
+ int32_t lo,
+ int32_t hi,
+ int32_t d,
+ int32_t* budget)
+{
+ int32_t i, j, h, bigN, hp;
+ uint32_t 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 (1) {
+
+///unrolling
+ /*-- 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_t zztmp = zz1; \
+ zz1 = zz2; \
+ zz2 = zztmp; \
+}
+
+#define mvswap(zzp1, zzp2, zzn) \
+{ \
+ int32_t yyp1 = (zzp1); \
+ int32_t yyp2 = (zzp2); \
+ int32_t yyn = (zzn); \
+ while (yyn > 0) { \
+ mswap(ptr[yyp1], ptr[yyp2]); \
+ yyp1++; \
+ yyp2++; \
+ yyn--; \
+ } \
+}
+
+static
+inline
+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_t 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_t* ptr,
+ UChar* block,
+ uint16_t* quadrant,
+ int32_t nblock,
+ int32_t loSt,
+ int32_t hiSt,
+ int32_t dSt,
+ int32_t* budget)
+{
+ int32_t unLo, unHi, ltLo, gtHi, n, m, med;
+ int32_t sp, lo, hi, d;
+
+ int32_t stackLo[MAIN_QSORT_STACK_SIZE];
+ int32_t stackHi[MAIN_QSORT_STACK_SIZE];
+ int32_t stackD [MAIN_QSORT_STACK_SIZE];
+
+ int32_t nextLo[3];
+ int32_t nextHi[3];
+ int32_t nextD [3];
+
+ sp = 0;
+ mpush(loSt, hiSt, dSt);
+
+ while (sp > 0) {
+ AssertH(sp < MAIN_QSORT_STACK_SIZE - 2, 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_t) mmed3(block[ptr[lo ] + d],
+ block[ptr[hi ] + d],
+ block[ptr[(lo+hi) >> 1] + d]);
+
+ unLo = ltLo = lo;
+ unHi = gtHi = hi;
+
+ while (1) {
+ while (1) {
+ if (unLo > unHi)
+ break;
+ n = ((int32_t)block[ptr[unLo]+d]) - med;
+ if (n == 0) {
+ mswap(ptr[unLo], ptr[ltLo]);
+ ltLo++;
+ unLo++;
+ continue;
+ };
+ if (n > 0) break;
+ unLo++;
+ }
+ while (1) {
+ if (unLo > unHi)
+ break;
+ n = ((int32_t)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 NOINLINE
+void mainSort(uint32_t* ptr,
+ UChar* block,
+ uint16_t* quadrant,
+ uint32_t* ftab,
+ int32_t nblock,
+ int32_t* budget)
+{
+ int32_t i, j, k, ss, sb;
+ int32_t runningOrder[256];
+ Bool bigDone[256];
+ int32_t copyStart[256];
+ int32_t copyEnd [256];
+ UChar c1;
+ int32_t numQSorted;
+ uint16_t s;
+
+ /*-- set up the 2-byte frequency table --*/
+ /* was: for (i = 65536; i >= 0; i--) ftab[i] = 0; */
+ memset(ftab, 0, 65537 * sizeof(ftab[0]));
+
+ j = block[0] << 8;
+ i = nblock-1;
+#if 0
+ for (; i >= 3; i -= 4) {
+ quadrant[i] = 0;
+ j = (j >> 8) |(((uint16_t)block[i]) << 8);
+ ftab[j]++;
+ quadrant[i-1] = 0;
+ j = (j >> 8) |(((uint16_t)block[i-1]) << 8);
+ ftab[j]++;
+ quadrant[i-2] = 0;
+ j = (j >> 8) |(((uint16_t)block[i-2]) << 8);
+ ftab[j]++;
+ quadrant[i-3] = 0;
+ j = (j >> 8) |(((uint16_t)block[i-3]) << 8);
+ ftab[j]++;
+ }
+#endif
+ for (; i >= 0; i--) {
+ quadrant[i] = 0;
+ j = (j >> 8) |(((uint16_t)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;
+#if 0
+ 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;
+ }
+#endif
+ 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_t vv;
+ /* was: int32_t h = 1; */
+ /* do h = 3 * h + 1; while (h <= 256); */
+ int32_t h = 364;
+
+ 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_t lo = ftab[sb] & CLEARMASK;
+ int32_t 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])
+ ||
+ /* Extremely rare case missing in bzip2-1.0.0 and 1.0.1.
+ * Necessity for this case is demonstrated by compressing
+ * a sequence of approximately 48.5 million of character
+ * 251; 1.0.0/1.0.1 will then die here. */
+ (copyStart[ss] == 0 && copyEnd[ss] == nblock-1),
+ 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_t bbStart = ftab[ss << 8] & CLEARMASK;
+ int32_t bbSize = (ftab[(ss+1) << 8] & CLEARMASK) - bbStart;
+ int32_t shifts = 0;
+
+ while ((bbSize >> shifts) > 65534) shifts++;
+
+ for (j = bbSize-1; j >= 0; j--) {
+ int32_t a2update = ptr[bbStart + j];
+ uint16_t qVal = (uint16_t)(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
+ */
+static NOINLINE
+void BZ2_blockSort(EState* s)
+{
+ /* In original bzip2 1.0.4, it's a parameter, but 30
+ * should work ok. */
+ enum { wfact = 30 };
+
+ uint32_t* ptr = s->ptr;
+ UChar* block = s->block;
+ uint32_t* ftab = s->ftab;
+ int32_t nblock = s->nblock;
+ uint16_t* quadrant;
+ int32_t budget;
+ int32_t 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_t*)(&(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.
+ */
+ budget = nblock * ((wfact-1) / 3);
+
+ 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/archival/bz/bzlib.c b/archival/bz/bzlib.c
new file mode 100644
index 000000000..3125bb0bf
--- /dev/null
+++ b/archival/bz/bzlib.c
@@ -0,0 +1,433 @@
+/*
+ * bzip2 is written by Julian Seward <jseward@bzip.org>.
+ * Adapted for busybox by Denys Vlasenko <vda.linux@googlemail.com>.
+ * See README and LICENSE files in this directory for more information.
+ */
+
+/*-------------------------------------------------------------*/
+/*--- Library top-level functions. ---*/
+/*--- bzlib.c ---*/
+/*-------------------------------------------------------------*/
+
+/* ------------------------------------------------------------------
+This file is part of bzip2/libbzip2, a program and library for
+lossless, block-sorting data compression.
+
+bzip2/libbzip2 version 1.0.4 of 20 December 2006
+Copyright (C) 1996-2006 Julian Seward <jseward@bzip.org>
+
+Please read the WARNING, DISCLAIMER and PATENTS sections in the
+README file.
+
+This program is released under the terms of the license contained
+in the file LICENSE.
+------------------------------------------------------------------ */
+
+/* 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_private.h" */
+
+/*---------------------------------------------------*/
+/*--- Compression stuff ---*/
+/*---------------------------------------------------*/
+
+/*---------------------------------------------------*/
+#ifndef BZ_NO_STDIO
+static void bz_assert_fail(int errcode)
+{
+ /* if (errcode == 1007) bb_error_msg_and_die("probably bad RAM"); */
+ bb_error_msg_and_die("bzip2 internal error %d", errcode);
+}
+#endif
+
+
+/*---------------------------------------------------*/
+static
+void prepare_new_block(EState* s)
+{
+ int32_t i;
+ s->nblock = 0;
+ s->numZ = 0;
+ s->state_out_pos = 0;
+ BZ_INITIALISE_CRC(s->blockCRC);
+ for (i = 0; i < 256; i++) s->inUse[i] = False;
+ s->blockNo++;
+}
+
+
+/*---------------------------------------------------*/
+static
+ALWAYS_INLINE
+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;
+ return True;
+}
+
+
+/*---------------------------------------------------*/
+static
+void BZ2_bzCompressInit(bz_stream *strm, int blockSize100k)
+{
+ int32_t n;
+ EState* s;
+
+ s = xzalloc(sizeof(EState));
+ s->strm = strm;
+
+ n = 100000 * blockSize100k;
+ s->arr1 = xmalloc(n * sizeof(uint32_t));
+ s->mtfv = (uint16_t*)s->arr1;
+ s->ptr = (uint32_t*)s->arr1;
+ s->arr2 = xmalloc((n + BZ_N_OVERSHOOT) * sizeof(uint32_t));
+ s->block = (UChar*)s->arr2;
+ s->ftab = xmalloc(65537 * sizeof(uint32_t));
+
+ s->state = BZ_S_INPUT;
+ s->mode = BZ_M_RUNNING;
+ s->blockSize100k = blockSize100k;
+ s->nblockMAX = n - 19;
+
+ strm->state = s;
+ /*strm->total_in = 0;*/
+ strm->total_out = 0;
+ init_RL(s);
+ prepare_new_block(s);
+}
+
+
+/*---------------------------------------------------*/
+static
+void add_pair_to_block(EState* s)
+{
+ int32_t i;
+ UChar ch = (UChar)(s->state_in_ch);
+ for (i = 0; i < s->state_in_len; i++) {
+ BZ_UPDATE_CRC(s->blockCRC, 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_t zchh = (uint32_t)(zchh0); \
+ /*-- fast track the common case --*/ \
+ if (zchh != zs->state_in_ch && zs->state_in_len == 1) { \
+ UChar ch = (UChar)(zs->state_in_ch); \
+ BZ_UPDATE_CRC(zs->blockCRC, 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;
+
+//vda: cannot simplify this until avail_in_expect is removed
+ if (s->mode == BZ_M_RUNNING) {
+ /*-- fast track the common case --*/
+ while (1) {
+ /*-- 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_t)(*((UChar*)(s->strm->next_in))));
+ s->strm->next_in++;
+ s->strm->avail_in--;
+ /*s->strm->total_in++;*/
+ }
+ } else {
+ /*-- general, uncommon case --*/
+ while (1) {
+ /*-- 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_t)(*((UChar*)(s->strm->next_in))));
+ s->strm->next_in++;
+ s->strm->avail_in--;
+ /*s->strm->total_in++;*/
+ s->avail_in_expect--;
+ }
+ }
+ return progress_in;
+}
+
+
+/*---------------------------------------------------*/
+static
+Bool copy_output_until_stop(EState* s)
+{
+ Bool progress_out = False;
+
+ while (1) {
+
+ /*-- 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++;
+ }
+
+ return progress_out;
+}
+
+
+/*---------------------------------------------------*/
+static
+Bool handle_compress(bz_stream *strm)
+{
+ Bool progress_in = False;
+ Bool progress_out = False;
+ EState* s = strm->state;
+
+ while (1) {
+ 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;
+}
+
+
+/*---------------------------------------------------*/
+static
+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--*/
+}
+
+
+/*---------------------------------------------------*/
+static
+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;
+
+ if (s->arr1 != NULL) free(s->arr1);
+ if (s->arr2 != NULL) free(s->arr2);
+ if (s->ftab != NULL) free(s->ftab);
+ free(strm->state);
+
+ strm->state = NULL;
+
+ return BZ_OK;
+}
+
+
+/*---------------------------------------------------*/
+/*--- Misc convenience stuff ---*/
+/*---------------------------------------------------*/
+
+/*---------------------------------------------------*/
+#ifdef EXAMPLE_CODE_FOR_MEM_TO_MEM_COMPRESSION
+static
+int BZ2_bzBuffToBuffCompress(char* dest,
+ unsigned int* destLen,
+ char* source,
+ unsigned int sourceLen,
+ int blockSize100k)
+{
+ bz_stream strm;
+ int ret;
+
+ if (dest == NULL || destLen == NULL ||
+ source == NULL ||
+ blockSize100k < 1 || blockSize100k > 9)
+ return BZ_PARAM_ERROR;
+
+ BZ2_bzCompressInit(&strm, blockSize100k);
+
+ strm.next_in = source;
+ strm.next_out = dest;
+ strm.avail_in = sourceLen;
+ strm.avail_out = *destLen;
+
+ ret = BZ2_bzCompress(&strm, BZ_FINISH);
+ if (ret == BZ_FINISH_OK) goto output_overflow;
+ if (ret != BZ_STREAM_END) goto errhandler;
+
+ /* normal termination */
+ *destLen -= strm.avail_out;
+ BZ2_bzCompressEnd(&strm);
+ return BZ_OK;
+
+ output_overflow:
+ BZ2_bzCompressEnd(&strm);
+ return BZ_OUTBUFF_FULL;
+
+ errhandler:
+ BZ2_bzCompressEnd(&strm);
+ return ret;
+}
+#endif
+
+/*-------------------------------------------------------------*/
+/*--- end bzlib.c ---*/
+/*-------------------------------------------------------------*/
diff --git a/archival/bz/bzlib.h b/archival/bz/bzlib.h
new file mode 100644
index 000000000..805e9b328
--- /dev/null
+++ b/archival/bz/bzlib.h
@@ -0,0 +1,63 @@
+/*
+ * bzip2 is written by Julian Seward <jseward@bzip.org>.
+ * Adapted for busybox by Denys Vlasenko <vda.linux@googlemail.com>.
+ * See README and LICENSE files in this directory for more information.
+ */
+
+/*-------------------------------------------------------------*/
+/*--- Public header file for the library. ---*/
+/*--- bzlib.h ---*/
+/*-------------------------------------------------------------*/
+
+/* ------------------------------------------------------------------
+This file is part of bzip2/libbzip2, a program and library for
+lossless, block-sorting data compression.
+
+bzip2/libbzip2 version 1.0.4 of 20 December 2006
+Copyright (C) 1996-2006 Julian Seward <jseward@bzip.org>
+
+Please read the WARNING, DISCLAIMER and PATENTS sections in the
+README file.
+
+This program is released under the terms of the license contained
+in the file LICENSE.
+------------------------------------------------------------------ */
+
+#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)
+
+typedef struct bz_stream {
+ char *next_in;
+ char *next_out;
+ unsigned avail_in;
+ unsigned avail_out;
+ /*unsigned long long total_in;*/
+ unsigned long long total_out;
+ void *state;
+} bz_stream;
+
+/*-- Core (low-level) library functions --*/
+
+static void BZ2_bzCompressInit(bz_stream *strm, int blockSize100k);
+static int BZ2_bzCompress(bz_stream *strm, int action);
+static int BZ2_bzCompressEnd(bz_stream *strm);
+
+/*-------------------------------------------------------------*/
+/*--- end bzlib.h ---*/
+/*-------------------------------------------------------------*/
diff --git a/archival/bz/bzlib_private.h b/archival/bz/bzlib_private.h
new file mode 100644
index 000000000..24ffbee9c
--- /dev/null
+++ b/archival/bz/bzlib_private.h
@@ -0,0 +1,234 @@
+/*
+ * bzip2 is written by Julian Seward <jseward@bzip.org>.
+ * Adapted for busybox by Denys Vlasenko <vda.linux@googlemail.com>.
+ * See README and LICENSE files in this directory for more information.
+ */
+
+/*-------------------------------------------------------------*/
+/*--- Private header file for the library. ---*/
+/*--- bzlib_private.h ---*/
+/*-------------------------------------------------------------*/
+
+/* ------------------------------------------------------------------
+This file is part of bzip2/libbzip2, a program and library for
+lossless, block-sorting data compression.
+
+bzip2/libbzip2 version 1.0.4 of 20 December 2006
+Copyright (C) 1996-2006 Julian Seward <jseward@bzip.org>
+
+Please read the WARNING, DISCLAIMER and PATENTS sections in the
+README file.
+
+This program is released under the terms of the license contained
+in the file LICENSE.
+------------------------------------------------------------------ */
+
+/* #include "bzlib.h" */
+
+#define BZ_DEBUG 0
+//#define BZ_NO_STDIO 1 - does not work
+
+
+/*-- General stuff. --*/
+
+typedef unsigned char Bool;
+typedef unsigned char UChar;
+
+#define True ((Bool)1)
+#define False ((Bool)0)
+
+static void bz_assert_fail(int errcode) ATTRIBUTE_NORETURN;
+#define AssertH(cond, errcode) \
+{ \
+ if (!(cond)) \
+ bz_assert_fail(errcode); \
+}
+
+#if BZ_DEBUG
+#define AssertD(cond, msg) \
+{ \
+ if (!(cond)) \
+ bb_error_msg_and_die("(debug build): internal error %s", msg); \
+}
+#else
+#define AssertD(cond, msg) do { } while (0)
+#endif
+
+
+/*-- Header bytes. --*/
+
+#define BZ_HDR_B 0x42 /* 'B' */
+#define BZ_HDR_Z 0x5a /* 'Z' */
+#define BZ_HDR_h 0x68 /* 'h' */
+#define BZ_HDR_0 0x30 /* '0' */
+
+#define BZ_HDR_BZh0 0x425a6830
+
+/*-- 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))
+
+
+/*-- Stuff for randomising repetitive blocks. --*/
+
+static const int32_t BZ2_rNums[512];
+
+#define BZ_RAND_DECLS \
+ int32_t rNToGo; \
+ int32_t rTPos \
+
+#define BZ_RAND_INIT_MASK \
+ s->rNToGo = 0; \
+ s->rTPos = 0 \
+
+#define BZ_RAND_MASK ((s->rNToGo == 1) ? 1 : 0)
+
+#define BZ_RAND_UPD_MASK \
+{ \
+ if (s->rNToGo == 0) { \
+ s->rNToGo = BZ2_rNums[s->rTPos]; \
+ s->rTPos++; \
+ if (s->rTPos == 512) s->rTPos = 0; \
+ } \
+ s->rNToGo--; \
+}
+
+
+/*-- Stuff for doing CRCs. --*/
+
+static const uint32_t BZ2_crc32Table[256];
+
+#define BZ_INITIALISE_CRC(crcVar) \
+{ \
+ crcVar = 0xffffffffL; \
+}
+
+#define BZ_FINALISE_CRC(crcVar) \
+{ \
+ crcVar = ~(crcVar); \
+}
+
+#define BZ_UPDATE_CRC(crcVar,cha) \
+{ \
+ crcVar = (crcVar << 8) ^ BZ2_crc32Table[(crcVar >> 24) ^ ((UChar)cha)]; \
+}
+
+
+/*-- 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 EState {
+ /* pointer back to the struct bz_stream */
+ bz_stream *strm;
+
+ /* mode this stream is in, and whether inputting */
+ /* or outputting data */
+ int32_t mode;
+ int32_t state;
+
+ /* remembers avail_in when flush/finish requested */
+ uint32_t avail_in_expect; //vda: do we need this?
+
+ /* for doing the block sorting */
+ uint32_t *arr1;
+ uint32_t *arr2;
+ uint32_t *ftab;
+ int32_t origPtr;
+
+ /* aliases for arr1 and arr2 */
+ uint32_t *ptr;
+ UChar *block;
+ uint16_t *mtfv;
+ UChar *zbits;
+
+ /* run-length-encoding of the input */
+ uint32_t state_in_ch;
+ int32_t state_in_len;
+ BZ_RAND_DECLS;
+
+ /* input and output limits and current posns */
+ int32_t nblock;
+ int32_t nblockMAX;
+ int32_t numZ;
+ int32_t state_out_pos;
+
+ /* the buffer for bit stream creation */
+ uint32_t bsBuff;
+ int32_t bsLive;
+
+ /* block and combined CRCs */
+ uint32_t blockCRC;
+ uint32_t combinedCRC;
+
+ /* misc administratium */
+ int32_t blockNo;
+ int32_t blockSize100k;
+
+ /* stuff for coding the MTF values */
+ int32_t nMTF;
+
+ /* map of bytes used in block */
+ int32_t nInUse;
+ Bool inUse[256];
+ UChar unseqToSeq[256];
+
+ /* stuff for coding the MTF values */
+ int32_t 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_t code [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ int32_t rfreq [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+#ifdef FAST_GROUP6
+ /* second dimension: only 3 needed; 4 makes index calculations faster */
+ uint32_t len_pack[BZ_MAX_ALPHA_SIZE][4];
+#endif
+} EState;
+
+
+/*-- compression. --*/
+
+static void
+BZ2_blockSort(EState*);
+
+static void
+BZ2_compressBlock(EState*, Bool);
+
+static void
+BZ2_bsInitWrite(EState*);
+
+static void
+BZ2_hbAssignCodes(int32_t*, UChar*, int32_t, int32_t, int32_t);
+
+static void
+BZ2_hbMakeCodeLengths(UChar*, int32_t*, int32_t, int32_t);
+
+/*-------------------------------------------------------------*/
+/*--- end bzlib_private.h ---*/
+/*-------------------------------------------------------------*/
diff --git a/archival/bz/compress.c b/archival/bz/compress.c
new file mode 100644
index 000000000..54426dcc7
--- /dev/null
+++ b/archival/bz/compress.c
@@ -0,0 +1,671 @@
+/*
+ * bzip2 is written by Julian Seward <jseward@bzip.org>.
+ * Adapted for busybox by Denys Vlasenko <vda.linux@googlemail.com>.
+ * See README and LICENSE files in this directory for more information.
+ */
+
+/*-------------------------------------------------------------*/
+/*--- Compression machinery (not incl block sorting) ---*/
+/*--- compress.c ---*/
+/*-------------------------------------------------------------*/
+
+/* ------------------------------------------------------------------
+This file is part of bzip2/libbzip2, a program and library for
+lossless, block-sorting data compression.
+
+bzip2/libbzip2 version 1.0.4 of 20 December 2006
+Copyright (C) 1996-2006 Julian Seward <jseward@bzip.org>
+
+Please read the WARNING, DISCLAIMER and PATENTS sections in the
+README file.
+
+This program is released under the terms of the license contained
+in the file LICENSE.
+------------------------------------------------------------------ */
+
+/* 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_private.h" */
+
+/*---------------------------------------------------*/
+/*--- Bit stream I/O ---*/
+/*---------------------------------------------------*/
+
+/*---------------------------------------------------*/
+static
+void BZ2_bsInitWrite(EState* s)
+{
+ s->bsLive = 0;
+ s->bsBuff = 0;
+}
+
+
+/*---------------------------------------------------*/
+static NOINLINE
+void bsFinishWrite(EState* s)
+{
+ while (s->bsLive > 0) {
+ s->zbits[s->numZ] = (UChar)(s->bsBuff >> 24);
+ s->numZ++;
+ s->bsBuff <<= 8;
+ s->bsLive -= 8;
+ }
+}
+
+
+/*---------------------------------------------------*/
+static
+/* Forced inlining results in +600 bytes code,
+ * 2% faster compression. Not worth it. */
+/*ALWAYS_INLINE*/
+void bsW(EState* s, int32_t n, uint32_t v)
+{
+ while (s->bsLive >= 8) {
+ s->zbits[s->numZ] = (UChar)(s->bsBuff >> 24);
+ s->numZ++;
+ s->bsBuff <<= 8;
+ s->bsLive -= 8;
+ }
+ s->bsBuff |= (v << (32 - s->bsLive - n));
+ s->bsLive += n;
+}
+
+
+/*---------------------------------------------------*/
+static
+void bsPutU32(EState* s, uint32_t u)
+{
+ bsW(s, 8, (u >> 24) & 0xff);
+ bsW(s, 8, (u >> 16) & 0xff);
+ bsW(s, 8, (u >> 8) & 0xff);
+ bsW(s, 8, u & 0xff);
+}
+
+
+/*---------------------------------------------------*/
+static
+void bsPutUChar(EState* s, UChar c)
+{
+ bsW(s, 8, (uint32_t)c);
+}
+
+
+/*---------------------------------------------------*/
+/*--- The back end proper ---*/
+/*---------------------------------------------------*/
+
+/*---------------------------------------------------*/
+static
+void makeMaps_e(EState* s)
+{
+ int32_t i;
+ s->nInUse = 0;
+ for (i = 0; i < 256; i++) {
+ if (s->inUse[i]) {
+ s->unseqToSeq[i] = s->nInUse;
+ s->nInUse++;
+ }
+ }
+}
+
+
+/*---------------------------------------------------*/
+static NOINLINE
+void generateMTFValues(EState* s)
+{
+ UChar yy[256];
+ int32_t i, j;
+ int32_t zPend;
+ int32_t wr;
+ int32_t 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_t*)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_t* ptr = s->ptr;
+ UChar* block = s->block;
+ uint16_t* 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 (1) {
+ 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 (1) {
+ 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 NOINLINE
+void sendMTFValues(EState* s)
+{
+ int32_t v, t, i, j, gs, ge, totc, bt, bc, iter;
+ int32_t nSelectors, alphaSize, minLen, maxLen, selCtr;
+ int32_t nGroups, nBytes;
+
+ /*
+ * UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ * is a global since the decoder also needs it.
+ *
+ * int32_t code[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ * int32_t 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_t cost[BZ_N_GROUPS];
+ int32_t fave[BZ_N_GROUPS];
+
+ uint16_t* 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_t 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;
+
+#ifdef FAST_GROUP6
+ /*
+ * 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];
+ }
+ }
+#endif
+
+ nSelectors = 0;
+ totc = 0;
+ gs = 0;
+ while (1) {
+ /*--- 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;
+#ifdef FAST_GROUP6
+ if (nGroups == 6 && 50 == ge-gs+1) {
+ /*--- fast track the common case ---*/
+ register uint32_t cost01, cost23, cost45;
+ register uint16_t 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
+#endif
+ {
+ /*--- slow version which correctly handles all situations ---*/
+ for (i = gs; i <= ge; i++) {
+ uint16_t 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;
+ //bc = cost[0];
+ //bt = 0;
+ 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.
+ */
+/* ~0.5% faster compress. +800 bytes */
+#if 0
+ 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
+ gs = ge+1;
+ } else
+#endif
+ {
+ /*--- slow version which correctly handles all situations ---*/
+ while (gs <= ge) {
+ s->rfreq[bt][mtfv[gs]]++;
+ gs++;
+ }
+ /* already is: gs = ge+1; */
+ }
+ }
+
+ /*
+ * Recompute the tables based on the accumulated frequencies.
+ */
+ /* maxLen was changed from 20 to 17 in bzip2-1.0.3. See
+ * comment in huffman.c for details. */
+ for (t = 0; t < nGroups; t++)
+ BZ2_hbMakeCodeLengths(&(s->len[t][0]), &(s->rfreq[t][0]), alphaSize, 17 /*20*/);
+ }
+
+ AssertH(nGroups < 8, 3002);
+ AssertH(nSelectors < 32768 && nSelectors <= (2 + (900000 / 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 > 17 /*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_t 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 (1) {
+ 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);
+
+/* Costs 1300 bytes and is _slower_ (on Intel Core 2) */
+#if 0
+ if (nGroups == 6 && 50 == ge-gs+1) {
+ /*--- fast track the common case ---*/
+ uint16_t mtfv_i;
+ UChar* s_len_sel_selCtr = &(s->len[s->selector[selCtr]][0]);
+ int32_t* 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
+ gs = ge+1;
+ } else
+#endif
+ {
+ /*--- slow version which correctly handles all situations ---*/
+ /* code is bit bigger, but moves multiply out of the loop */
+ UChar* s_len_sel_selCtr = &(s->len [s->selector[selCtr]][0]);
+ int32_t* s_code_sel_selCtr = &(s->code[s->selector[selCtr]][0]);
+ while (gs <= ge) {
+ bsW(s,
+ s_len_sel_selCtr[mtfv[gs]],
+ s_code_sel_selCtr[mtfv[gs]]
+ );
+ gs++;
+ }
+ /* already is: gs = ge+1; */
+ }
+ selCtr++;
+ }
+ AssertH(selCtr == nSelectors, 3007);
+}
+
+
+/*---------------------------------------------------*/
+static
+void BZ2_compressBlock(EState* s, Bool is_last_block)
+{
+ if (s->nblock > 0) {
+ BZ_FINALISE_CRC(s->blockCRC);
+ s->combinedCRC = (s->combinedCRC << 1) | (s->combinedCRC >> 31);
+ s->combinedCRC ^= s->blockCRC;
+ 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);
+ /*bsPutUChar(s, BZ_HDR_B);*/
+ /*bsPutUChar(s, BZ_HDR_Z);*/
+ /*bsPutUChar(s, BZ_HDR_h);*/
+ /*bsPutUChar(s, (UChar)(BZ_HDR_0 + s->blockSize100k));*/
+ bsPutU32(s, BZ_HDR_BZh0 + s->blockSize100k);
+ }
+
+ if (s->nblock > 0) {
+ /*bsPutUChar(s, 0x31);*/
+ /*bsPutUChar(s, 0x41);*/
+ /*bsPutUChar(s, 0x59);*/
+ /*bsPutUChar(s, 0x26);*/
+ bsPutU32(s, 0x31415926);
+ bsPutUChar(s, 0x53);
+ bsPutUChar(s, 0x59);
+
+ /*-- Now the block's CRC, so it is in a known place. --*/
+ bsPutU32(s, s->blockCRC);
+
+ /*
+ * Now a single bit indicating (non-)randomisation.
+ * As of version 0.9.5, we use a better sorting algorithm
+ * which makes randomisation unnecessary. So always set
+ * the randomised bit to 'no'. Of course, the decoder
+ * still needs to be able to handle randomised blocks
+ * so as to maintain backwards compatibility with
+ * older versions of bzip2.
+ */
+ bsW(s, 1, 0);
+
+ 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);*/
+ /*bsPutUChar(s, 0x72);*/
+ /*bsPutUChar(s, 0x45);*/
+ /*bsPutUChar(s, 0x38);*/
+ bsPutU32(s, 0x17724538);
+ bsPutUChar(s, 0x50);
+ bsPutUChar(s, 0x90);
+ bsPutU32(s, s->combinedCRC);
+ bsFinishWrite(s);
+ }
+}
+
+
+/*-------------------------------------------------------------*/
+/*--- end compress.c ---*/
+/*-------------------------------------------------------------*/
diff --git a/archival/bz/crctable.c b/archival/bz/crctable.c
new file mode 100644
index 000000000..dadd372d3
--- /dev/null
+++ b/archival/bz/crctable.c
@@ -0,0 +1,105 @@
+/*
+ * bzip2 is written by Julian Seward <jseward@bzip.org>.
+ * Adapted for busybox by Denys Vlasenko <vda.linux@googlemail.com>.
+ * See README and LICENSE files in this directory for more information.
+ */
+
+/*-------------------------------------------------------------*/
+/*--- Table for doing CRCs ---*/
+/*--- crctable.c ---*/
+/*-------------------------------------------------------------*/
+
+/* ------------------------------------------------------------------
+This file is part of bzip2/libbzip2, a program and library for
+lossless, block-sorting data compression.
+
+bzip2/libbzip2 version 1.0.4 of 20 December 2006
+Copyright (C) 1996-2006 Julian Seward <jseward@bzip.org>
+
+Please read the WARNING, DISCLAIMER and PATENTS sections in the
+README file.
+
+This program is released under the terms of the license contained
+in the file LICENSE.
+------------------------------------------------------------------ */
+
+/* #include "bzlib_private.h" */
+
+/*
+ * I think this is an implementation of the AUTODIN-II,
+ * Ethernet & FDDI 32-bit CRC standard. Vaguely derived
+ * from code by Rob Warnock, in Section 51 of the
+ * comp.compression FAQ.
+ */
+
+static const uint32_t BZ2_crc32Table[256] = {
+ 0x00000000L, 0x04c11db7L, 0x09823b6eL, 0x0d4326d9L,
+ 0x130476dcL, 0x17c56b6bL, 0x1a864db2L, 0x1e475005L,
+ 0x2608edb8L, 0x22c9f00fL, 0x2f8ad6d6L, 0x2b4bcb61L,
+ 0x350c9b64L, 0x31cd86d3L, 0x3c8ea00aL, 0x384fbdbdL,
+ 0x4c11db70L, 0x48d0c6c7L, 0x4593e01eL, 0x4152fda9L,
+ 0x5f15adacL, 0x5bd4b01bL, 0x569796c2L, 0x52568b75L,
+ 0x6a1936c8L, 0x6ed82b7fL, 0x639b0da6L, 0x675a1011L,
+ 0x791d4014L, 0x7ddc5da3L, 0x709f7b7aL, 0x745e66cdL,
+ 0x9823b6e0L, 0x9ce2ab57L, 0x91a18d8eL, 0x95609039L,
+ 0x8b27c03cL, 0x8fe6dd8bL, 0x82a5fb52L, 0x8664e6e5L,
+ 0xbe2b5b58L, 0xbaea46efL, 0xb7a96036L, 0xb3687d81L,
+ 0xad2f2d84L, 0xa9ee3033L, 0xa4ad16eaL, 0xa06c0b5dL,
+ 0xd4326d90L, 0xd0f37027L, 0xddb056feL, 0xd9714b49L,
+ 0xc7361b4cL, 0xc3f706fbL, 0xceb42022L, 0xca753d95L,
+ 0xf23a8028L, 0xf6fb9d9fL, 0xfbb8bb46L, 0xff79a6f1L,
+ 0xe13ef6f4L, 0xe5ffeb43L, 0xe8bccd9aL, 0xec7dd02dL,
+ 0x34867077L, 0x30476dc0L, 0x3d044b19L, 0x39c556aeL,
+ 0x278206abL, 0x23431b1cL, 0x2e003dc5L, 0x2ac12072L,
+ 0x128e9dcfL, 0x164f8078L, 0x1b0ca6a1L, 0x1fcdbb16L,
+ 0x018aeb13L, 0x054bf6a4L, 0x0808d07dL, 0x0cc9cdcaL,
+ 0x7897ab07L, 0x7c56b6b0L, 0x71159069L, 0x75d48ddeL,
+ 0x6b93dddbL, 0x6f52c06cL, 0x6211e6b5L, 0x66d0fb02L,
+ 0x5e9f46bfL, 0x5a5e5b08L, 0x571d7dd1L, 0x53dc6066L,
+ 0x4d9b3063L, 0x495a2dd4L, 0x44190b0dL, 0x40d816baL,
+ 0xaca5c697L, 0xa864db20L, 0xa527fdf9L, 0xa1e6e04eL,
+ 0xbfa1b04bL, 0xbb60adfcL, 0xb6238b25L, 0xb2e29692L,
+ 0x8aad2b2fL, 0x8e6c3698L, 0x832f1041L, 0x87ee0df6L,
+ 0x99a95df3L, 0x9d684044L, 0x902b669dL, 0x94ea7b2aL,
+ 0xe0b41de7L, 0xe4750050L, 0xe9362689L, 0xedf73b3eL,
+ 0xf3b06b3bL, 0xf771768cL, 0xfa325055L, 0xfef34de2L,
+ 0xc6bcf05fL, 0xc27dede8L, 0xcf3ecb31L, 0xcbffd686L,
+ 0xd5b88683L, 0xd1799b34L, 0xdc3abdedL, 0xd8fba05aL,
+ 0x690ce0eeL, 0x6dcdfd59L, 0x608edb80L, 0x644fc637L,
+ 0x7a089632L, 0x7ec98b85L, 0x738aad5cL, 0x774bb0ebL,
+ 0x4f040d56L, 0x4bc510e1L, 0x46863638L, 0x42472b8fL,
+ 0x5c007b8aL, 0x58c1663dL, 0x558240e4L, 0x51435d53L,
+ 0x251d3b9eL, 0x21dc2629L, 0x2c9f00f0L, 0x285e1d47L,
+ 0x36194d42L, 0x32d850f5L, 0x3f9b762cL, 0x3b5a6b9bL,
+ 0x0315d626L, 0x07d4cb91L, 0x0a97ed48L, 0x0e56f0ffL,
+ 0x1011a0faL, 0x14d0bd4dL, 0x19939b94L, 0x1d528623L,
+ 0xf12f560eL, 0xf5ee4bb9L, 0xf8ad6d60L, 0xfc6c70d7L,
+ 0xe22b20d2L, 0xe6ea3d65L, 0xeba91bbcL, 0xef68060bL,
+ 0xd727bbb6L, 0xd3e6a601L, 0xdea580d8L, 0xda649d6fL,
+ 0xc423cd6aL, 0xc0e2d0ddL, 0xcda1f604L, 0xc960ebb3L,
+ 0xbd3e8d7eL, 0xb9ff90c9L, 0xb4bcb610L, 0xb07daba7L,
+ 0xae3afba2L, 0xaafbe615L, 0xa7b8c0ccL, 0xa379dd7bL,
+ 0x9b3660c6L, 0x9ff77d71L, 0x92b45ba8L, 0x9675461fL,
+ 0x8832161aL, 0x8cf30badL, 0x81b02d74L, 0x857130c3L,
+ 0x5d8a9099L, 0x594b8d2eL, 0x5408abf7L, 0x50c9b640L,
+ 0x4e8ee645L, 0x4a4ffbf2L, 0x470cdd2bL, 0x43cdc09cL,
+ 0x7b827d21L, 0x7f436096L, 0x7200464fL, 0x76c15bf8L,
+ 0x68860bfdL, 0x6c47164aL, 0x61043093L, 0x65c52d24L,
+ 0x119b4be9L, 0x155a565eL, 0x18197087L, 0x1cd86d30L,
+ 0x029f3d35L, 0x065e2082L, 0x0b1d065bL, 0x0fdc1becL,
+ 0x3793a651L, 0x3352bbe6L, 0x3e119d3fL, 0x3ad08088L,
+ 0x2497d08dL, 0x2056cd3aL, 0x2d15ebe3L, 0x29d4f654L,
+ 0xc5a92679L, 0xc1683bceL, 0xcc2b1d17L, 0xc8ea00a0L,
+ 0xd6ad50a5L, 0xd26c4d12L, 0xdf2f6bcbL, 0xdbee767cL,
+ 0xe3a1cbc1L, 0xe760d676L, 0xea23f0afL, 0xeee2ed18L,
+ 0xf0a5bd1dL, 0xf464a0aaL, 0xf9278673L, 0xfde69bc4L,
+ 0x89b8fd09L, 0x8d79e0beL, 0x803ac667L, 0x84fbdbd0L,
+ 0x9abc8bd5L, 0x9e7d9662L, 0x933eb0bbL, 0x97ffad0cL,
+ 0xafb010b1L, 0xab710d06L, 0xa6322bdfL, 0xa2f33668L,
+ 0xbcb4666dL, 0xb8757bdaL, 0xb5365d03L, 0xb1f740b4L
+};
+
+
+/*-------------------------------------------------------------*/
+/*--- end crctable.c ---*/
+/*-------------------------------------------------------------*/
diff --git a/archival/bz/huffman.c b/archival/bz/huffman.c
new file mode 100644
index 000000000..d01af11c2
--- /dev/null
+++ b/archival/bz/huffman.c
@@ -0,0 +1,188 @@
+/*
+ * bzip2 is written by Julian Seward <jseward@bzip.org>.
+ * Adapted for busybox by Denys Vlasenko <vda.linux@googlemail.com>.
+ * See README and LICENSE files in this directory for more information.
+ */
+
+/*-------------------------------------------------------------*/
+/*--- Huffman coding low-level stuff ---*/
+/*--- huffman.c ---*/
+/*-------------------------------------------------------------*/
+
+/* ------------------------------------------------------------------
+This file is part of bzip2/libbzip2, a program and library for
+lossless, block-sorting data compression.
+
+bzip2/libbzip2 version 1.0.4 of 20 December 2006
+Copyright (C) 1996-2006 Julian Seward <jseward@bzip.org>
+
+Please read the WARNING, DISCLAIMER and PATENTS sections in the
+README file.
+
+This program is released under the terms of the license contained
+in the file LICENSE.
+------------------------------------------------------------------ */
+
+/* #include "bzlib_private.h" */
+
+/*---------------------------------------------------*/
+#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_t 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_t zz, yy, tmp; \
+ zz = z; tmp = heap[zz]; \
+ while (1) { \
+ 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; \
+}
+
+
+/*---------------------------------------------------*/
+static
+void BZ2_hbMakeCodeLengths(UChar *len,
+ int32_t *freq,
+ int32_t alphaSize,
+ int32_t maxLen)
+{
+ /*
+ * Nodes and heap entries run from 1. Entry 0
+ * for both the heap and nodes is a sentinel.
+ */
+ int32_t nNodes, nHeap, n1, n2, i, j, k;
+ Bool tooLong;
+
+ int32_t heap [BZ_MAX_ALPHA_SIZE + 2];
+ int32_t weight[BZ_MAX_ALPHA_SIZE * 2];
+ int32_t parent[BZ_MAX_ALPHA_SIZE * 2];
+
+ for (i = 0; i < alphaSize; i++)
+ weight[i+1] = (freq[i] == 0 ? 1 : freq[i]) << 8;
+
+ while (1) {
+ 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;
+
+ /* 17 Oct 04: keep-going condition for the following loop used
+ to be 'i < alphaSize', which missed the last element,
+ theoretically leading to the possibility of the compressor
+ looping. However, this count-scaling step is only needed if
+ one of the generated Huffman code words is longer than
+ maxLen, which up to and including version 1.0.2 was 20 bits,
+ which is extremely unlikely. In version 1.0.3 maxLen was
+ changed to 17 bits, which has minimal effect on compression
+ ratio, but does mean this scaling step is used from time to
+ time, enough to verify that it works.
+
+ This means that bzip2-1.0.3 and later will only produce
+ Huffman codes with a maximum length of 17 bits. However, in
+ order to preserve backwards compatibility with bitstreams
+ produced by versions pre-1.0.3, the decompressor must still
+ handle lengths of up to 20. */
+
+ for (i = 1; i <= alphaSize; i++) {
+ j = weight[i] >> 8;
+ j = 1 + (j / 2);
+ weight[i] = j << 8;
+ }
+ }
+}
+
+
+/*---------------------------------------------------*/
+static
+void BZ2_hbAssignCodes(int32_t *code,
+ UChar *length,
+ int32_t minLen,
+ int32_t maxLen,
+ int32_t alphaSize)
+{
+ int32_t 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;
+ }
+}
+
+
+/*-------------------------------------------------------------*/
+/*--- end huffman.c ---*/
+/*-------------------------------------------------------------*/
diff --git a/archival/bz/randtable.c b/archival/bz/randtable.c
new file mode 100644
index 000000000..8a3c562da
--- /dev/null
+++ b/archival/bz/randtable.c
@@ -0,0 +1,85 @@
+/*
+ * bzip2 is written by Julian Seward <jseward@bzip.org>.
+ * Adapted for busybox by Denys Vlasenko <vda.linux@googlemail.com>.
+ * See README and LICENSE files in this directory for more information.
+ */
+
+/*-------------------------------------------------------------*/
+/*--- Table for randomising repetitive blocks ---*/
+/*--- randtable.c ---*/
+/*-------------------------------------------------------------*/
+
+/* ------------------------------------------------------------------
+This file is part of bzip2/libbzip2, a program and library for
+lossless, block-sorting data compression.
+
+bzip2/libbzip2 version 1.0.4 of 20 December 2006
+Copyright (C) 1996-2006 Julian Seward <jseward@bzip.org>
+
+Please read the WARNING, DISCLAIMER and PATENTS sections in the
+README file.
+
+This program is released under the terms of the license contained
+in the file LICENSE.
+------------------------------------------------------------------ */
+
+/* #include "bzlib_private.h" */
+
+static const int32_t BZ2_rNums[512] = {
+ 619, 720, 127, 481, 931, 816, 813, 233, 566, 247,
+ 985, 724, 205, 454, 863, 491, 741, 242, 949, 214,
+ 733, 859, 335, 708, 621, 574, 73, 654, 730, 472,
+ 419, 436, 278, 496, 867, 210, 399, 680, 480, 51,
+ 878, 465, 811, 169, 869, 675, 611, 697, 867, 561,
+ 862, 687, 507, 283, 482, 129, 807, 591, 733, 623,
+ 150, 238, 59, 379, 684, 877, 625, 169, 643, 105,
+ 170, 607, 520, 932, 727, 476, 693, 425, 174, 647,
+ 73, 122, 335, 530, 442, 853, 695, 249, 445, 515,
+ 909, 545, 703, 919, 874, 474, 882, 500, 594, 612,
+ 641, 801, 220, 162, 819, 984, 589, 513, 495, 799,
+ 161, 604, 958, 533, 221, 400, 386, 867, 600, 782,
+ 382, 596, 414, 171, 516, 375, 682, 485, 911, 276,
+ 98, 553, 163, 354, 666, 933, 424, 341, 533, 870,
+ 227, 730, 475, 186, 263, 647, 537, 686, 600, 224,
+ 469, 68, 770, 919, 190, 373, 294, 822, 808, 206,
+ 184, 943, 795, 384, 383, 461, 404, 758, 839, 887,
+ 715, 67, 618, 276, 204, 918, 873, 777, 604, 560,
+ 951, 160, 578, 722, 79, 804, 96, 409, 713, 940,
+ 652, 934, 970, 447, 318, 353, 859, 672, 112, 785,
+ 645, 863, 803, 350, 139, 93, 354, 99, 820, 908,
+ 609, 772, 154, 274, 580, 184, 79, 626, 630, 742,
+ 653, 282, 762, 623, 680, 81, 927, 626, 789, 125,
+ 411, 521, 938, 300, 821, 78, 343, 175, 128, 250,
+ 170, 774, 972, 275, 999, 639, 495, 78, 352, 126,
+ 857, 956, 358, 619, 580, 124, 737, 594, 701, 612,
+ 669, 112, 134, 694, 363, 992, 809, 743, 168, 974,
+ 944, 375, 748, 52, 600, 747, 642, 182, 862, 81,
+ 344, 805, 988, 739, 511, 655, 814, 334, 249, 515,
+ 897, 955, 664, 981, 649, 113, 974, 459, 893, 228,
+ 433, 837, 553, 268, 926, 240, 102, 654, 459, 51,
+ 686, 754, 806, 760, 493, 403, 415, 394, 687, 700,
+ 946, 670, 656, 610, 738, 392, 760, 799, 887, 653,
+ 978, 321, 576, 617, 626, 502, 894, 679, 243, 440,
+ 680, 879, 194, 572, 640, 724, 926, 56, 204, 700,
+ 707, 151, 457, 449, 797, 195, 791, 558, 945, 679,
+ 297, 59, 87, 824, 713, 663, 412, 693, 342, 606,
+ 134, 108, 571, 364, 631, 212, 174, 643, 304, 329,
+ 343, 97, 430, 751, 497, 314, 983, 374, 822, 928,
+ 140, 206, 73, 263, 980, 736, 876, 478, 430, 305,
+ 170, 514, 364, 692, 829, 82, 855, 953, 676, 246,
+ 369, 970, 294, 750, 807, 827, 150, 790, 288, 923,
+ 804, 378, 215, 828, 592, 281, 565, 555, 710, 82,
+ 896, 831, 547, 261, 524, 462, 293, 465, 502, 56,
+ 661, 821, 976, 991, 658, 869, 905, 758, 745, 193,
+ 768, 550, 608, 933, 378, 286, 215, 979, 792, 961,
+ 61, 688, 793, 644, 986, 403, 106, 366, 905, 644,
+ 372, 567, 466, 434, 645, 210, 389, 550, 919, 135,
+ 780, 773, 635, 389, 707, 100, 626, 958, 165, 504,
+ 920, 176, 193, 713, 857, 265, 203, 50, 668, 108,
+ 645, 990, 626, 197, 510, 357, 358, 850, 858, 364,
+ 936, 638
+};
+
+/*-------------------------------------------------------------*/
+/*--- end randtable.c ---*/
+/*-------------------------------------------------------------*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 12:00:16 +0000