/*-----------------------------------------------------------*//*--- A block-sorting, lossless compressor        bzip2.c ---*//*-----------------------------------------------------------*//*--  This file is a part of bzip2 and/or libbzip2, a program and  library for lossless, block-sorting data compression.  Copyright (C) 1996-2002 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.--*//*----------------------------------------------------*//*--- IMPORTANT                                    ---*//*----------------------------------------------------*//*--   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 disasterous loss of data.   DISCLAIMER:      I TAKE NO RESPONSIBILITY FOR ANY LOSS OF DATA ARISING FROM THE      USE OF THIS PROGRAM, 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 AND/OR LIBRARY 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       available to carry out a full patent search.  Therefore I cannot       give any guarantee of the above statement.--*//*----------------------------------------------------*//*--- and now for something much more pleasant :-) ---*//*----------------------------------------------------*//*---------------------------------------------*//*--  Place a 1 beside your platform, and 0 elsewhere.--*//*--  Generic 32-bit Unix.  Also works on 64-bit Unix boxes.  This is the default.--*/#define BZ_UNIX      1/*--  Win32, as seen by Jacob Navia's excellent  port of (Chris Fraser & David Hanson)'s excellent  lcc compiler.  Or with MS Visual C.  This is selected automatically if compiled by a compiler which  defines _WIN32, not including the Cygwin GCC.--*/#define BZ_LCCWIN32  0#if defined(_WIN32) && !defined(__CYGWIN__)#undef  BZ_LCCWIN32#define BZ_LCCWIN32 1#undef  BZ_UNIX#define BZ_UNIX 0#endif/*---------------------------------------------*//*--  Some stuff for all platforms.--*/#include <stdio.h>#include <stdlib.h>#include <string.h>#include <signal.h>#include <math.h>#include <errno.h>#include <ctype.h>#include "bzlib.h"#define ERROR_IF_EOF(i)       { if ((i) == EOF)  ioError(); }#define ERROR_IF_NOT_ZERO(i)  { if ((i) != 0)    ioError(); }#define ERROR_IF_MINUS_ONE(i) { if ((i) == (-1)) ioError(); }/*---------------------------------------------*//*--   Platform-specific stuff.--*/#if BZ_UNIX#   include <fcntl.h>#   include <sys/types.h>#   include <utime.h>#   include <unistd.h>#   include <sys/stat.h>#   include <sys/times.h>#   define PATH_SEP    '/'#   define MY_LSTAT    lstat#   define MY_STAT     stat#   define MY_S_ISREG  S_ISREG#   define MY_S_ISDIR  S_ISDIR#   define APPEND_FILESPEC(root, name) \      root=snocString((root), (name))#   define APPEND_FLAG(root, name) \      root=snocString((root), (name))#   define SET_BINARY_MODE(fd) /**/#   ifdef __GNUC__#      define NORETURN __attribute__ ((noreturn))#   else#      define NORETURN /**/#   endif#   ifdef __DJGPP__#     include <io.h>#     include <fcntl.h>#     undef MY_LSTAT#     undef MY_STAT#     define MY_LSTAT stat#     define MY_STAT stat#     undef SET_BINARY_MODE#     define SET_BINARY_MODE(fd)                        \        do {                                            \           int retVal = setmode ( fileno ( fd ),        \                                  O_BINARY );           \           ERROR_IF_MINUS_ONE ( retVal );               \        } while ( 0 )#   endif#   ifdef __CYGWIN__#     include <io.h>#     include <fcntl.h>#     undef SET_BINARY_MODE#     define SET_BINARY_MODE(fd)                        \        do {                                            \           int retVal = setmode ( fileno ( fd ),        \                                  O_BINARY );           \           ERROR_IF_MINUS_ONE ( retVal );               \        } while ( 0 )#   endif#endif /* BZ_UNIX */#if BZ_LCCWIN32#   include <io.h>#   include <fcntl.h>#   include <sys\stat.h>#   define NORETURN       /**/#   define PATH_SEP       '\\'#   define MY_LSTAT       _stat#   define MY_STAT        _stat#   define MY_S_ISREG(x)  ((x) & _S_IFREG)#   define MY_S_ISDIR(x)  ((x) & _S_IFDIR)#   define APPEND_FLAG(root, name) \      root=snocString((root), (name))#   define APPEND_FILESPEC(root, name)                \      root = snocString ((root), (name))#   define SET_BINARY_MODE(fd)                        \      do {                                            \         int retVal = setmode ( fileno ( fd ),        \                                O_BINARY );           \         ERROR_IF_MINUS_ONE ( retVal );               \      } while ( 0 )#endif /* BZ_LCCWIN32 *//*---------------------------------------------*//*--  Some more stuff for all platforms :-)--*/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)/*--  IntNative is your platform's `native' int size.  Only here to avoid probs with 64-bit platforms.--*/typedef int IntNative;/*---------------------------------------------------*//*--- Misc (file handling) data decls             ---*//*---------------------------------------------------*/Int32   verbosity;Bool    keepInputFiles, smallMode, deleteOutputOnInterrupt;Bool    forceOverwrite, testFailsExist, unzFailsExist, noisy;Int32   numFileNames, numFilesProcessed, blockSize100k;Int32   exitValue;/*-- source modes; F==file, I==stdin, O==stdout --*/#define SM_I2O           1#define SM_F2O           2#define SM_F2F           3/*-- operation modes --*/#define OM_Z             1#define OM_UNZ           2#define OM_TEST          3Int32   opMode;Int32   srcMode;#define FILE_NAME_LEN 1034Int32   longestFileName;Char    inName [FILE_NAME_LEN];Char    outName[FILE_NAME_LEN];Char    tmpName[FILE_NAME_LEN];Char    *progName;Char    progNameReally[FILE_NAME_LEN];FILE    *outputHandleJustInCase;Int32   workFactor;static void    panic                 ( Char* )   NORETURN;static void    ioError               ( void )    NORETURN;static void    outOfMemory           ( void )    NORETURN;static void    configError           ( void )    NORETURN;static void    crcError              ( void )    NORETURN;static void    cleanUpAndFail        ( Int32 )   NORETURN;static void    compressedStreamEOF   ( void )    NORETURN;static void    copyFileName ( Char*, Char* );static void*   myMalloc     ( Int32 );/*---------------------------------------------------*//*--- An implementation of 64-bit ints.  Sigh.    ---*//*--- Roll on widespread deployment of ANSI C9X ! ---*//*---------------------------------------------------*/typedef   struct { UChar b[8]; }    UInt64;staticvoid uInt64_from_UInt32s ( UInt64* n, UInt32 lo32, UInt32 hi32 ){   n->b[7] = (UChar)((hi32 >> 24) & 0xFF);   n->b[6] = (UChar)((hi32 >> 16) & 0xFF);   n->b[5] = (UChar)((hi32 >> 8)  & 0xFF);   n->b[4] = (UChar) (hi32        & 0xFF);   n->b[3] = (UChar)((lo32 >> 24) & 0xFF);   n->b[2] = (UChar)((lo32 >> 16) & 0xFF);   n->b[1] = (UChar)((lo32 >> 8)  & 0xFF);   n->b[0] = (UChar) (lo32        & 0xFF);}staticdouble uInt64_to_double ( UInt64* n ){   Int32  i;   double base = 1.0;   double sum  = 0.0;   for (i = 0; i < 8; i++) {      sum  += base * (double)(n->b[i]);      base *= 256.0;   }   return sum;}staticBool uInt64_isZero ( UInt64* n ){   Int32 i;   for (i = 0; i < 8; i++)      if (n->b[i] != 0) return 0;   return 1;}/* Divide *n by 10, and return the remainder.  */static Int32 uInt64_qrm10 ( UInt64* n ){   UInt32 rem, tmp;   Int32  i;   rem = 0;   for (i = 7; i >= 0; i--) {      tmp = rem * 256 + n->b[i];      n->b[i] = tmp / 10;      rem = tmp % 10;   }   return rem;}/* ... and the Whole Entire Point of all this UInt64 stuff is   so that we can supply the following function.*/staticvoid uInt64_toAscii ( char* outbuf, UInt64* n ){   Int32  i, q;   UChar  buf[32];   Int32  nBuf   = 0;   UInt64 n_copy = *n;   do {      q = uInt64_qrm10 ( &n_copy );      buf[nBuf] = q + '0';      nBuf++;   } while (!uInt64_isZero(&n_copy));   outbuf[nBuf] = 0;   for (i = 0; i < nBuf; i++)       outbuf[i] = buf[nBuf-i-1];}/*---------------------------------------------------*//*--- Processing of complete files and streams    ---*//*---------------------------------------------------*//*---------------------------------------------*/static Bool myfeof ( FILE* f ){   Int32 c = fgetc ( f );   if (c == EOF) return True;   ungetc ( c, f );   return False;}/*---------------------------------------------*/static void compressStream ( FILE *stream, FILE *zStream ){