Merging upstream version 1.13.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 1222 deletions

diff --git a/main.c b/main.c
deleted file mode 100644
index c623d9b..0000000
--- a/main.c
+++ /dev/null
@@ -1,1222 +0,0 @@
-/* Minilzip - Test program for the library lzlib
-   Copyright (C) 2009-2021 Antonio Diaz Diaz.
-
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation, either version 2 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-/*
-   Exit status: 0 for a normal exit, 1 for environmental problems
-   (file not found, invalid flags, I/O errors, etc), 2 to indicate a
-   corrupt or invalid input file, 3 for an internal consistency error
-   (eg, bug) which caused minilzip to panic.
-*/
-
-#define _FILE_OFFSET_BITS 64
-
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <signal.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <utime.h>
-#include <sys/stat.h>
-#if defined(__MSVCRT__) || defined(__OS2__) || defined(__DJGPP__)
-#include <io.h>
-#if defined(__MSVCRT__)
-#define fchmod(x,y) 0
-#define fchown(x,y,z) 0
-#define strtoull strtoul
-#define SIGHUP SIGTERM
-#define S_ISSOCK(x) 0
-#ifndef S_IRGRP
-#define S_IRGRP 0
-#define S_IWGRP 0
-#define S_IROTH 0
-#define S_IWOTH 0
-#endif
-#endif
-#if defined(__DJGPP__)
-#define S_ISSOCK(x) 0
-#define S_ISVTX 0
-#endif
-#endif
-
-#include "carg_parser.h"
-#include "lzlib.h"
-
-#ifndef O_BINARY
-#define O_BINARY 0
-#endif
-
-#if CHAR_BIT != 8
-#error "Environments where CHAR_BIT != 8 are not supported."
-#endif
-
-#ifndef max
-  #define max(x,y) ((x) >= (y) ? (x) : (y))
-#endif
-#ifndef min
-  #define min(x,y) ((x) <= (y) ? (x) : (y))
-#endif
-
-static void cleanup_and_fail( const int retval );
-static void show_error( const char * const msg, const int errcode,
-                        const bool help );
-static void show_file_error( const char * const filename,
-                             const char * const msg, const int errcode );
-static void internal_error( const char * const msg );
-static const char * const mem_msg = "Not enough memory.";
-
-int verbosity = 0;
-
-static const char * const program_name = "minilzip";
-static const char * const program_year = "2021";
-static const char * invocation_name = "minilzip";	/* default value */
-
-static const struct { const char * from; const char * to; } known_extensions[] = {
-  { ".lz",  ""     },
-  { ".tlz", ".tar" },
-  { 0,      0      } };
-
-struct Lzma_options
-  {
-  int dictionary_size;		/* 4 KiB .. 512 MiB */
-  int match_len_limit;		/* 5 .. 273 */
-  };
-
-enum Mode { m_compress, m_decompress, m_test };
-
-/* Variables used in signal handler context.
-   They are not declared volatile because the handler never returns. */
-static char * output_filename = 0;
-static int outfd = -1;
-static bool delete_output_on_interrupt = false;
-
-
-static void show_help( void )
-  {
-  printf( "Minilzip is a test program for the compression library lzlib, fully\n"
-          "compatible with lzip 1.4 or newer.\n"
-          "\nLzip is a lossless data compressor with a user interface similar to the one\n"
-          "of gzip or bzip2. Lzip uses a simplified form of the 'Lempel-Ziv-Markov\n"
-          "chain-Algorithm' (LZMA) stream format, chosen to maximize safety and\n"
-          "interoperability. Lzip can compress about as fast as gzip (lzip -0) or\n"
-          "compress most files more than bzip2 (lzip -9). Decompression speed is\n"
-          "intermediate between gzip and bzip2. Lzip is better than gzip and bzip2 from\n"
-          "a data recovery perspective. Lzip has been designed, written, and tested\n"
-          "with great care to replace gzip and bzip2 as the standard general-purpose\n"
-          "compressed format for unix-like systems.\n"
-          "\nUsage: %s [options] [files]\n", invocation_name );
-  printf( "\nOptions:\n"
-          "  -h, --help                     display this help and exit\n"
-          "  -V, --version                  output version information and exit\n"
-          "  -a, --trailing-error           exit with error status if trailing data\n"
-          "  -b, --member-size=<bytes>      set member size limit in bytes\n"
-          "  -c, --stdout                   write to standard output, keep input files\n"
-          "  -d, --decompress               decompress\n"
-          "  -f, --force                    overwrite existing output files\n"
-          "  -F, --recompress               force re-compression of compressed files\n"
-          "  -k, --keep                     keep (don't delete) input files\n"
-          "  -m, --match-length=<bytes>     set match length limit in bytes [36]\n"
-          "  -o, --output=<file>            write to <file>, keep input files\n"
-          "  -q, --quiet                    suppress all messages\n"
-          "  -s, --dictionary-size=<bytes>  set dictionary size limit in bytes [8 MiB]\n"
-          "  -S, --volume-size=<bytes>      set volume size limit in bytes\n"
-          "  -t, --test                     test compressed file integrity\n"
-          "  -v, --verbose                  be verbose (a 2nd -v gives more)\n"
-          "  -0 .. -9                       set compression level [default 6]\n"
-          "      --fast                     alias for -0\n"
-          "      --best                     alias for -9\n"
-          "      --loose-trailing           allow trailing data seeming corrupt header\n"
-          "      --check-lib                compare version of lzlib.h with liblz.{a,so}\n"
-          "\nIf no file names are given, or if a file is '-', minilzip compresses or\n"
-          "decompresses from standard input to standard output.\n"
-          "Numbers may be followed by a multiplier: k = kB = 10^3 = 1000,\n"
-          "Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc...\n"
-          "Dictionary sizes 12 to 29 are interpreted as powers of two, meaning 2^12\n"
-          "to 2^29 bytes.\n"
-          "\nThe bidimensional parameter space of LZMA can't be mapped to a linear\n"
-          "scale optimal for all files. If your files are large, very repetitive,\n"
-          "etc, you may need to use the options --dictionary-size and --match-length\n"
-          "directly to achieve optimal performance.\n"
-          "\nTo extract all the files from archive 'foo.tar.lz', use the commands\n"
-          "'tar -xf foo.tar.lz' or 'minilzip -cd foo.tar.lz | tar -xf -'.\n"
-          "\nExit status: 0 for a normal exit, 1 for environmental problems (file\n"
-          "not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or\n"
-          "invalid input file, 3 for an internal consistency error (eg, bug) which\n"
-          "caused minilzip to panic.\n"
-          "\nThe ideas embodied in lzlib are due to (at least) the following people:\n"
-          "Abraham Lempel and Jacob Ziv (for the LZ algorithm), Andrey Markov (for the\n"
-          "definition of Markov chains), G.N.N. Martin (for the definition of range\n"
-          "encoding), Igor Pavlov (for putting all the above together in LZMA), and\n"
-          "Julian Seward (for bzip2's CLI).\n"
-          "\nReport bugs to lzip-bug@nongnu.org\n"
-          "Lzlib home page: http://www.nongnu.org/lzip/lzlib.html\n" );
-  }
-
-
-static void show_version( void )
-  {
-  printf( "%s %s\n", program_name, PROGVERSION );
-  printf( "Copyright (C) %s Antonio Diaz Diaz.\n", program_year );
-  printf( "Using lzlib %s\n", LZ_version() );
-  printf( "License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>\n"
-          "This is free software: you are free to change and redistribute it.\n"
-          "There is NO WARRANTY, to the extent permitted by law.\n" );
-  }
-
-
-int check_lib()
-  {
-  bool warning = false;
-  if( strcmp( LZ_version_string, LZ_version() ) != 0 )
-    { warning = true;
-      if( verbosity >= 0 )
-        printf( "warning: LZ_version_string != LZ_version() (%s vs %s)\n",
-                LZ_version_string, LZ_version() ); }
-#if defined LZ_API_VERSION && LZ_API_VERSION >= 1012
-  if( LZ_API_VERSION != LZ_api_version() )
-    { warning = true;
-      if( verbosity >= 0 )
-        printf( "warning: LZ_API_VERSION != LZ_api_version() (%u vs %u)\n",
-                LZ_API_VERSION, LZ_api_version() ); }
-#endif
-  if( verbosity >= 1 )
-    {
-    printf( "Using lzlib %s\n", LZ_version() );
-#if !defined LZ_API_VERSION
-    fputs( "LZ_API_VERSION is not defined.\n", stdout );
-#elif LZ_API_VERSION >= 1012
-    printf( "Using LZ_API_VERSION = %u\n", LZ_api_version() );
-#else
-    printf( "Compiled with LZ_API_VERSION = %u. "
-            "Using an unknown LZ_API_VERSION\n", LZ_API_VERSION );
-#endif
-    }
-  return warning;
-  }
-
-
-/* assure at least a minimum size for buffer 'buf' */
-static void * resize_buffer( void * buf, const unsigned min_size )
-  {
-  if( buf ) buf = realloc( buf, min_size );
-  else buf = malloc( min_size );
-  if( !buf ) { show_error( mem_msg, 0, false ); cleanup_and_fail( 1 ); }
-  return buf;
-  }
-
-
-struct Pretty_print
-  {
-  const char * name;
-  char * padded_name;
-  const char * stdin_name;
-  unsigned longest_name;
-  bool first_post;
-  };
-
-static void Pp_init( struct Pretty_print * const pp,
-                     const char * const filenames[], const int num_filenames )
-  {
-  unsigned stdin_name_len;
-  int i;
-  pp->name = 0;
-  pp->padded_name = 0;
-  pp->stdin_name = "(stdin)";
-  pp->longest_name = 0;
-  pp->first_post = false;
-
-  if( verbosity <= 0 ) return;
-  stdin_name_len = strlen( pp->stdin_name );
-  for( i = 0; i < num_filenames; ++i )
-    {
-    const char * const s = filenames[i];
-    const unsigned len = (strcmp( s, "-" ) == 0) ? stdin_name_len : strlen( s );
-    if( pp->longest_name < len ) pp->longest_name = len;
-    }
-  if( pp->longest_name == 0 ) pp->longest_name = stdin_name_len;
-  }
-
-static void Pp_set_name( struct Pretty_print * const pp,
-                         const char * const filename )
-  {
-  unsigned name_len, padded_name_len, i = 0;
-
-  if( filename && filename[0] && strcmp( filename, "-" ) != 0 )
-    pp->name = filename;
-  else pp->name = pp->stdin_name;
-  name_len = strlen( pp->name );
-  padded_name_len = max( name_len, pp->longest_name ) + 4;
-  pp->padded_name = resize_buffer( pp->padded_name, padded_name_len + 1 );
-  while( i < 2 ) pp->padded_name[i++] = ' ';
-  while( i < name_len + 2 ) { pp->padded_name[i] = pp->name[i-2]; ++i; }
-  pp->padded_name[i++] = ':';
-  while( i < padded_name_len ) pp->padded_name[i++] = ' ';
-  pp->padded_name[i] = 0;
-  pp->first_post = true;
-  }
-
-static void Pp_reset( struct Pretty_print * const pp )
-  { if( pp->name && pp->name[0] ) pp->first_post = true; }
-
-static void Pp_show_msg( struct Pretty_print * const pp, const char * const msg )
-  {
-  if( verbosity >= 0 )
-    {
-    if( pp->first_post )
-      {
-      pp->first_post = false;
-      fputs( pp->padded_name, stderr );
-      if( !msg ) fflush( stderr );
-      }
-    if( msg ) fprintf( stderr, "%s\n", msg );
-    }
-  }
-
-
-static void show_header( const unsigned dictionary_size )
-  {
-  enum { factor = 1024 };
-  const char * const prefix[8] =
-    { "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" };
-  const char * p = "";
-  const char * np = "  ";
-  unsigned num = dictionary_size;
-  bool exact = ( num % factor == 0 );
-
-  int i; for( i = 0; i < 8 && ( num > 9999 || ( exact && num >= factor ) ); ++i )
-    { num /= factor; if( num % factor != 0 ) exact = false;
-      p = prefix[i]; np = ""; }
-  fprintf( stderr, "dict %s%4u %sB, ", np, num, p );
-  }
-
-
-static unsigned long long getnum( const char * const ptr,
-                                  const unsigned long long llimit,
-                                  const unsigned long long ulimit )
-  {
-  unsigned long long result;
-  char * tail;
-  errno = 0;
-  result = strtoull( ptr, &tail, 0 );
-  if( tail == ptr )
-    {
-    show_error( "Bad or missing numerical argument.", 0, true );
-    exit( 1 );
-    }
-
-  if( !errno && tail[0] )
-    {
-    const unsigned factor = ( tail[1] == 'i' ) ? 1024 : 1000;
-    int exponent = 0;				/* 0 = bad multiplier */
-    int i;
-    switch( tail[0] )
-      {
-      case 'Y': exponent = 8; break;
-      case 'Z': exponent = 7; break;
-      case 'E': exponent = 6; break;
-      case 'P': exponent = 5; break;
-      case 'T': exponent = 4; break;
-      case 'G': exponent = 3; break;
-      case 'M': exponent = 2; break;
-      case 'K': if( factor == 1024 ) exponent = 1; break;
-      case 'k': if( factor == 1000 ) exponent = 1; break;
-      }
-    if( exponent <= 0 )
-      {
-      show_error( "Bad multiplier in numerical argument.", 0, true );
-      exit( 1 );
-      }
-    for( i = 0; i < exponent; ++i )
-      {
-      if( ulimit / factor >= result ) result *= factor;
-      else { errno = ERANGE; break; }
-      }
-    }
-  if( !errno && ( result < llimit || result > ulimit ) ) errno = ERANGE;
-  if( errno )
-    {
-    show_error( "Numerical argument out of limits.", 0, false );
-    exit( 1 );
-    }
-  return result;
-  }
-
-
-static int get_dict_size( const char * const arg )
-  {
-  char * tail;
-  int dictionary_size;
-  const long bits = strtol( arg, &tail, 0 );
-  if( bits >= LZ_min_dictionary_bits() &&
-      bits <= LZ_max_dictionary_bits() && *tail == 0 )
-    return 1 << bits;
-  dictionary_size = getnum( arg, LZ_min_dictionary_size(),
-                                 LZ_max_dictionary_size() );
-  if( dictionary_size == 65535 ) ++dictionary_size;	/* no fast encoder */
-  return dictionary_size;
-  }
-
-
-static void set_mode( enum Mode * const program_modep, const enum Mode new_mode )
-  {
-  if( *program_modep != m_compress && *program_modep != new_mode )
-    {
-    show_error( "Only one operation can be specified.", 0, true );
-    exit( 1 );
-    }
-  *program_modep = new_mode;
-  }
-
-
-static int extension_index( const char * const name )
-  {
-  int eindex;
-  for( eindex = 0; known_extensions[eindex].from; ++eindex )
-    {
-    const char * const ext = known_extensions[eindex].from;
-    const unsigned name_len = strlen( name );
-    const unsigned ext_len = strlen( ext );
-    if( name_len > ext_len &&
-        strncmp( name + name_len - ext_len, ext, ext_len ) == 0 )
-      return eindex;
-    }
-  return -1;
-  }
-
-
-static void set_c_outname( const char * const name, const bool force_ext,
-                           const bool multifile )
-  {
-  output_filename = resize_buffer( output_filename, strlen( name ) + 5 +
-                                   strlen( known_extensions[0].from ) + 1 );
-  strcpy( output_filename, name );
-  if( multifile ) strcat( output_filename, "00001" );
-  if( force_ext || multifile )
-    strcat( output_filename, known_extensions[0].from );
-  }
-
-
-static void set_d_outname( const char * const name, const int eindex )
-  {
-  const unsigned name_len = strlen( name );
-  if( eindex >= 0 )
-    {
-    const char * const from = known_extensions[eindex].from;
-    const unsigned from_len = strlen( from );
-    if( name_len > from_len )
-      {
-      output_filename = resize_buffer( output_filename, name_len +
-                                       strlen( known_extensions[eindex].to ) + 1 );
-      strcpy( output_filename, name );
-      strcpy( output_filename + name_len - from_len, known_extensions[eindex].to );
-      return;
-      }
-    }
-  output_filename = resize_buffer( output_filename, name_len + 4 + 1 );
-  strcpy( output_filename, name );
-  strcat( output_filename, ".out" );
-  if( verbosity >= 1 )
-    fprintf( stderr, "%s: Can't guess original name for '%s' -- using '%s'\n",
-             program_name, name, output_filename );
-  }
-
-
-static int open_instream( const char * const name, struct stat * const in_statsp,
-                          const enum Mode program_mode, const int eindex,
-                          const bool one_to_one, const bool recompress )
-  {
-  int infd = -1;
-  if( program_mode == m_compress && !recompress && eindex >= 0 )
-    {
-    if( verbosity >= 0 )
-      fprintf( stderr, "%s: Input file '%s' already has '%s' suffix.\n",
-               program_name, name, known_extensions[eindex].from );
-    }
-  else
-    {
-    infd = open( name, O_RDONLY | O_BINARY );
-    if( infd < 0 )
-      show_file_error( name, "Can't open input file", errno );
-    else
-      {
-      const int i = fstat( infd, in_statsp );
-      const mode_t mode = in_statsp->st_mode;
-      const bool can_read = ( i == 0 &&
-                              ( S_ISBLK( mode ) || S_ISCHR( mode ) ||
-                                S_ISFIFO( mode ) || S_ISSOCK( mode ) ) );
-      if( i != 0 || ( !S_ISREG( mode ) && ( !can_read || one_to_one ) ) )
-        {
-        if( verbosity >= 0 )
-          fprintf( stderr, "%s: Input file '%s' is not a regular file%s.\n",
-                   program_name, name, ( can_read && one_to_one ) ?
-                   ",\n          and neither '-c' nor '-o' were specified" : "" );
-        close( infd );
-        infd = -1;
-        }
-      }
-    }
-  return infd;
-  }
-
-
-static bool open_outstream( const bool force, const bool protect )
-  {
-  const mode_t usr_rw = S_IRUSR | S_IWUSR;
-  const mode_t all_rw = usr_rw | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
-  const mode_t outfd_mode = protect ? usr_rw : all_rw;
-  int flags = O_CREAT | O_WRONLY | O_BINARY;
-  if( force ) flags |= O_TRUNC; else flags |= O_EXCL;
-
-  outfd = open( output_filename, flags, outfd_mode );
-  if( outfd >= 0 ) delete_output_on_interrupt = true;
-  else if( verbosity >= 0 )
-    {
-    if( errno == EEXIST )
-      fprintf( stderr, "%s: Output file '%s' already exists, skipping.\n",
-               program_name, output_filename );
-    else
-      fprintf( stderr, "%s: Can't create output file '%s': %s\n",
-               program_name, output_filename, strerror( errno ) );
-    }
-  return ( outfd >= 0 );
-  }
-
-
-static void set_signals( void (*action)(int) )
-  {
-  signal( SIGHUP, action );
-  signal( SIGINT, action );
-  signal( SIGTERM, action );
-  }
-
-
-static void cleanup_and_fail( const int retval )
-  {
-  set_signals( SIG_IGN );			/* ignore signals */
-  if( delete_output_on_interrupt )
-    {
-    delete_output_on_interrupt = false;
-    if( verbosity >= 0 )
-      fprintf( stderr, "%s: Deleting output file '%s', if it exists.\n",
-               program_name, output_filename );
-    if( outfd >= 0 ) { close( outfd ); outfd = -1; }
-    if( remove( output_filename ) != 0 && errno != ENOENT )
-      show_error( "WARNING: deletion of output file (apparently) failed.", 0, false );
-    }
-  exit( retval );
-  }
-
-
-static void signal_handler( int sig )
-  {
-  if( sig ) {}				/* keep compiler happy */
-  show_error( "Control-C or similar caught, quitting.", 0, false );
-  cleanup_and_fail( 1 );
-  }
-
-
-static inline void set_retval( int * retval, const int new_val )
-  { if( *retval < new_val ) *retval = new_val; }
-
-
-static bool check_tty_in( const char * const input_filename, const int infd,
-                          const enum Mode program_mode, int * const retval )
-  {
-  if( ( program_mode == m_decompress || program_mode == m_test ) &&
-      isatty( infd ) )				/* for example /dev/tty */
-    { show_file_error( input_filename,
-                       "I won't read compressed data from a terminal.", 0 );
-      close( infd ); set_retval( retval, 1 );
-      if( program_mode != m_test ) cleanup_and_fail( *retval );
-      return false; }
-  return true;
-  }
-
-static bool check_tty_out( const enum Mode program_mode )
-  {
-  if( program_mode == m_compress && isatty( outfd ) )
-    { show_file_error( output_filename[0] ?
-                       output_filename : "(stdout)",
-                       "I won't write compressed data to a terminal.", 0 );
-      return false; }
-  return true;
-  }
-
-
-/* Set permissions, owner, and times. */
-static void close_and_set_permissions( const struct stat * const in_statsp )
-  {
-  bool warning = false;
-  if( in_statsp )
-    {
-    const mode_t mode = in_statsp->st_mode;
-    /* fchown will in many cases return with EPERM, which can be safely ignored. */
-    if( fchown( outfd, in_statsp->st_uid, in_statsp->st_gid ) == 0 )
-      { if( fchmod( outfd, mode ) != 0 ) warning = true; }
-    else
-      if( errno != EPERM ||
-          fchmod( outfd, mode & ~( S_ISUID | S_ISGID | S_ISVTX ) ) != 0 )
-        warning = true;
-    }
-  if( close( outfd ) != 0 )
-    {
-    show_error( "Error closing output file", errno, false );
-    cleanup_and_fail( 1 );
-    }
-  outfd = -1;
-  delete_output_on_interrupt = false;
-  if( in_statsp )
-    {
-    struct utimbuf t;
-    t.actime = in_statsp->st_atime;
-    t.modtime = in_statsp->st_mtime;
-    if( utime( output_filename, &t ) != 0 ) warning = true;
-    }
-  if( warning && verbosity >= 1 )
-    show_error( "Can't change output file attributes.", 0, false );
-  }
-
-
-/* Returns the number of bytes really read.
-   If (returned value < size) and (errno == 0), means EOF was reached.
-*/
-static int readblock( const int fd, uint8_t * const buf, const int size )
-  {
-  int sz = 0;
-  errno = 0;
-  while( sz < size )
-    {
-    const int n = read( fd, buf + sz, size - sz );
-    if( n > 0 ) sz += n;
-    else if( n == 0 ) break;				/* EOF */
-    else if( errno != EINTR ) break;
-    errno = 0;
-    }
-  return sz;
-  }
-
-
-/* Returns the number of bytes really written.
-   If (returned value < size), it is always an error.
-*/
-static int writeblock( const int fd, const uint8_t * const buf, const int size )
-  {
-  int sz = 0;
-  errno = 0;
-  while( sz < size )
-    {
-    const int n = write( fd, buf + sz, size - sz );
-    if( n > 0 ) sz += n;
-    else if( n < 0 && errno != EINTR ) break;
-    errno = 0;
-    }
-  return sz;
-  }
-
-
-static bool next_filename( void )
-  {
-  const unsigned name_len = strlen( output_filename );
-  const unsigned ext_len = strlen( known_extensions[0].from );
-  int i, j;
-  if( name_len >= ext_len + 5 )				/* "*00001.lz" */
-    for( i = name_len - ext_len - 1, j = 0; j < 5; --i, ++j )
-      {
-      if( output_filename[i] < '9' ) { ++output_filename[i]; return true; }
-      else output_filename[i] = '0';
-      }
-  return false;
-  }
-
-
-static int do_compress( struct LZ_Encoder * const encoder,
-                        const unsigned long long member_size,
-                        const unsigned long long volume_size, const int infd,
-                        struct Pretty_print * const pp,
-                        const struct stat * const in_statsp )
-  {
-  unsigned long long partial_volume_size = 0;
-  enum { buffer_size = 65536 };
-  uint8_t buffer[buffer_size];			/* read/write buffer */
-  if( verbosity >= 1 ) Pp_show_msg( pp, 0 );
-
-  while( true )
-    {
-    int in_size = 0, out_size;
-    while( LZ_compress_write_size( encoder ) > 0 )
-      {
-      const int size = min( LZ_compress_write_size( encoder ), buffer_size );
-      const int rd = readblock( infd, buffer, size );
-      if( rd != size && errno )
-        {
-        Pp_show_msg( pp, 0 ); show_error( "Read error", errno, false );
-        return 1;
-        }
-      if( rd > 0 && rd != LZ_compress_write( encoder, buffer, rd ) )
-        internal_error( "library error (LZ_compress_write)." );
-      if( rd < size ) LZ_compress_finish( encoder );
-/*      else LZ_compress_sync_flush( encoder ); */
-      in_size += rd;
-      }
-    out_size = LZ_compress_read( encoder, buffer, buffer_size );
-    if( out_size < 0 )
-      {
-      Pp_show_msg( pp, 0 );
-      if( verbosity >= 0 )
-        fprintf( stderr, "%s: LZ_compress_read error: %s\n",
-                 program_name, LZ_strerror( LZ_compress_errno( encoder ) ) );
-      return 1;
-      }
-    else if( out_size > 0 )
-      {
-      const int wr = writeblock( outfd, buffer, out_size );
-      if( wr != out_size )
-        {
-        Pp_show_msg( pp, 0 ); show_error( "Write error", errno, false );
-        return 1;
-        }
-      }
-    else if( in_size == 0 )
-      internal_error( "library error (LZ_compress_read)." );
-    if( LZ_compress_member_finished( encoder ) )
-      {
-      unsigned long long size;
-      if( LZ_compress_finished( encoder ) == 1 ) break;
-      if( volume_size > 0 )
-        {
-        partial_volume_size += LZ_compress_member_position( encoder );
-        if( partial_volume_size >= volume_size - LZ_min_dictionary_size() )
-          {
-          partial_volume_size = 0;
-          if( delete_output_on_interrupt )
-            {
-            close_and_set_permissions( in_statsp );
-            if( !next_filename() )
-              { Pp_show_msg( pp, "Too many volume files." ); return 1; }
-            if( !open_outstream( true, in_statsp ) ) return 1;
-            }
-          }
-        size = min( member_size, volume_size - partial_volume_size );
-        }
-      else
-        size = member_size;
-      if( LZ_compress_restart_member( encoder, size ) < 0 )
-        {
-        Pp_show_msg( pp, 0 );
-        if( verbosity >= 0 )
-          fprintf( stderr, "%s: LZ_compress_restart_member error: %s\n",
-                   program_name, LZ_strerror( LZ_compress_errno( encoder ) ) );
-        return 1;
-        }
-      }
-    }
-
-  if( verbosity >= 1 )
-    {
-    const unsigned long long in_size = LZ_compress_total_in_size( encoder );
-    const unsigned long long out_size = LZ_compress_total_out_size( encoder );
-    if( in_size == 0 || out_size == 0 )
-      fputs( " no data compressed.\n", stderr );
-    else
-      fprintf( stderr, "%6.3f:1, %5.2f%% ratio, %5.2f%% saved, "
-                       "%llu in, %llu out.\n",
-               (double)in_size / out_size,
-               ( 100.0 * out_size ) / in_size,
-               100.0 - ( ( 100.0 * out_size ) / in_size ),
-               in_size, out_size );
-    }
-  return 0;
-  }
-
-
-static int compress( const unsigned long long member_size,
-                     const unsigned long long volume_size, const int infd,
-                     const struct Lzma_options * const encoder_options,
-                     struct Pretty_print * const pp,
-                     const struct stat * const in_statsp )
-  {
-  struct LZ_Encoder * const encoder =
-    LZ_compress_open( encoder_options->dictionary_size,
-                      encoder_options->match_len_limit, ( volume_size > 0 ) ?
-                      min( member_size, volume_size ) : member_size );
-  int retval;
-
-  if( !encoder || LZ_compress_errno( encoder ) != LZ_ok )
-    {
-    if( !encoder || LZ_compress_errno( encoder ) == LZ_mem_error )
-      Pp_show_msg( pp, "Not enough memory. Try a smaller dictionary size." );
-    else
-      internal_error( "invalid argument to encoder." );
-    retval = 1;
-    }
-  else retval = do_compress( encoder, member_size, volume_size,
-                             infd, pp, in_statsp );
-  LZ_compress_close( encoder );
-  return retval;
-  }
-
-
-static int do_decompress( struct LZ_Decoder * const decoder, const int infd,
-                struct Pretty_print * const pp, const bool ignore_trailing,
-                const bool loose_trailing, const bool testing )
-  {
-  enum { buffer_size = 65536 };
-  uint8_t buffer[buffer_size];			/* read/write buffer */
-  unsigned long long total_in = 0;		/* to detect library stall */
-  bool first_member;
-
-  for( first_member = true; ; )
-    {
-    const int max_in_size =
-      min( LZ_decompress_write_size( decoder ), buffer_size );
-    int in_size = 0, out_size = 0;
-    if( max_in_size > 0 )
-      {
-      in_size = readblock( infd, buffer, max_in_size );
-      if( in_size != max_in_size && errno )
-        {
-        Pp_show_msg( pp, 0 ); show_error( "Read error", errno, false );
-        return 1;
-        }
-      if( in_size > 0 && in_size != LZ_decompress_write( decoder, buffer, in_size ) )
-        internal_error( "library error (LZ_decompress_write)." );
-      if( in_size < max_in_size ) LZ_decompress_finish( decoder );
-      }
-    while( true )
-      {
-      const int rd =
-        LZ_decompress_read( decoder, (outfd >= 0) ? buffer : 0, buffer_size );
-      if( rd > 0 )
-        {
-        out_size += rd;
-        if( outfd >= 0 )
-          {
-          const int wr = writeblock( outfd, buffer, rd );
-          if( wr != rd )
-            {
-            Pp_show_msg( pp, 0 ); show_error( "Write error", errno, false );
-            return 1;
-            }
-          }
-        }
-      else if( rd < 0 ) { out_size = rd; break; }
-      if( LZ_decompress_member_finished( decoder ) == 1 )
-        {
-        if( verbosity >= 1 )
-          {
-          const unsigned long long data_size = LZ_decompress_data_position( decoder );
-          const unsigned long long member_size = LZ_decompress_member_position( decoder );
-          if( verbosity >= 2 || ( verbosity == 1 && first_member ) )
-            Pp_show_msg( pp, 0 );
-          if( verbosity >= 2 )
-            {
-            if( verbosity >= 4 )
-              show_header( LZ_decompress_dictionary_size( decoder ) );
-            if( data_size == 0 || member_size == 0 )
-              fputs( "no data compressed. ", stderr );
-            else
-              fprintf( stderr, "%6.3f:1, %5.2f%% ratio, %5.2f%% saved. ",
-                     (double)data_size / member_size,
-                     ( 100.0 * member_size ) / data_size,
-                     100.0 - ( ( 100.0 * member_size ) / data_size ) );
-            if( verbosity >= 4 )
-              fprintf( stderr, "CRC %08X, ", LZ_decompress_data_crc( decoder ) );
-            if( verbosity >= 3 )
-              fprintf( stderr, "%9llu out, %8llu in. ", data_size, member_size );
-            fputs( testing ? "ok\n" : "done\n", stderr ); Pp_reset( pp );
-            }
-          }
-        first_member = false;
-        }
-      if( rd <= 0 ) break;
-      }
-    if( out_size < 0 || ( first_member && out_size == 0 ) )
-      {
-      const unsigned long long member_pos = LZ_decompress_member_position( decoder );
-      const enum LZ_Errno lz_errno = LZ_decompress_errno( decoder );
-      if( lz_errno == LZ_library_error )
-        internal_error( "library error (LZ_decompress_read)." );
-      if( member_pos <= 6 )
-        {
-        if( lz_errno == LZ_unexpected_eof )
-          {
-          if( first_member )
-            show_file_error( pp->name, "File ends unexpectedly at member header.", 0 );
-          else
-            Pp_show_msg( pp, "Truncated header in multimember file." );
-          return 2;
-          }
-        else if( lz_errno == LZ_data_error )
-          {
-          if( member_pos == 4 )
-            { if( verbosity >= 0 )
-              { Pp_show_msg( pp, 0 );
-                fprintf( stderr, "Version %d member format not supported.\n",
-                         LZ_decompress_member_version( decoder ) ); } }
-          else if( member_pos == 5 )
-            Pp_show_msg( pp, "Invalid dictionary size in member header." );
-          else if( first_member )	/* for lzlib older than 1.10 */
-            Pp_show_msg( pp, "Bad version or dictionary size in member header." );
-          else if( !loose_trailing )
-            Pp_show_msg( pp, "Corrupt header in multimember file." );
-          else if( !ignore_trailing )
-            Pp_show_msg( pp, "Trailing data not allowed." );
-          else break;				/* trailing data */
-          return 2;
-          }
-        }
-      if( lz_errno == LZ_header_error )
-        {
-        if( first_member )
-          show_file_error( pp->name,
-                           "Bad magic number (file not in lzip format).", 0 );
-        else if( !ignore_trailing )
-          Pp_show_msg( pp, "Trailing data not allowed." );
-        else break;				/* trailing data */
-        return 2;
-        }
-      if( lz_errno == LZ_mem_error ) { Pp_show_msg( pp, mem_msg ); return 1; }
-      if( verbosity >= 0 )
-        {
-        Pp_show_msg( pp, 0 );
-        fprintf( stderr, "%s at pos %llu\n", ( lz_errno == LZ_unexpected_eof ) ?
-                 "File ends unexpectedly" : "Decoder error",
-                 LZ_decompress_total_in_size( decoder ) );
-        }
-      return 2;
-      }
-    if( LZ_decompress_finished( decoder ) == 1 ) break;
-    if( in_size == 0 && out_size == 0 )
-      {
-      const unsigned long long size = LZ_decompress_total_in_size( decoder );
-      if( total_in == size ) internal_error( "library error (stalled)." );
-      total_in = size;
-      }
-    }
-  if( verbosity == 1 ) fputs( testing ? "ok\n" : "done\n", stderr );
-  return 0;
-  }
-
-
-static int decompress( const int infd, struct Pretty_print * const pp,
-                       const bool ignore_trailing,
-                       const bool loose_trailing, const bool testing )
-  {
-  struct LZ_Decoder * const decoder = LZ_decompress_open();
-  int retval;
-
-  if( !decoder || LZ_decompress_errno( decoder ) != LZ_ok )
-    { Pp_show_msg( pp, mem_msg ); retval = 1; }
-  else retval = do_decompress( decoder, infd, pp, ignore_trailing,
-                               loose_trailing, testing );
-  LZ_decompress_close( decoder );
-  return retval;
-  }
-
-
-static void show_error( const char * const msg, const int errcode,
-                        const bool help )
-  {
-  if( verbosity < 0 ) return;
-  if( msg && msg[0] )
-    fprintf( stderr, "%s: %s%s%s\n", program_name, msg,
-             ( errcode > 0 ) ? ": " : "",
-             ( errcode > 0 ) ? strerror( errcode ) : "" );
-  if( help )
-    fprintf( stderr, "Try '%s --help' for more information.\n",
-             invocation_name );
-  }
-
-
-static void show_file_error( const char * const filename,
-                             const char * const msg, const int errcode )
-  {
-  if( verbosity >= 0 )
-    fprintf( stderr, "%s: %s: %s%s%s\n", program_name, filename, msg,
-             ( errcode > 0 ) ? ": " : "",
-             ( errcode > 0 ) ? strerror( errcode ) : "" );
-  }
-
-
-static void internal_error( const char * const msg )
-  {
-  if( verbosity >= 0 )
-    fprintf( stderr, "%s: internal error: %s\n", program_name, msg );
-  exit( 3 );
-  }
-
-
-int main( const int argc, const char * const argv[] )
-  {
-  /* Mapping from gzip/bzip2 style 1..9 compression modes
-     to the corresponding LZMA compression modes. */
-  const struct Lzma_options option_mapping[] =
-    {
-    {   65535,  16 },		/* -0 (65535,16 chooses fast encoder) */
-    { 1 << 20,   5 },		/* -1 */
-    { 3 << 19,   6 },		/* -2 */
-    { 1 << 21,   8 },		/* -3 */
-    { 3 << 20,  12 },		/* -4 */
-    { 1 << 22,  20 },		/* -5 */
-    { 1 << 23,  36 },		/* -6 */
-    { 1 << 24,  68 },		/* -7 */
-    { 3 << 23, 132 },		/* -8 */
-    { 1 << 25, 273 } };		/* -9 */
-  struct Lzma_options encoder_options = option_mapping[6];  /* default = "-6" */
-  const unsigned long long max_member_size = 0x0008000000000000ULL; /* 2 PiB */
-  const unsigned long long max_volume_size = 0x4000000000000000ULL; /* 4 EiB */
-  unsigned long long member_size = max_member_size;
-  unsigned long long volume_size = 0;
-  const char * default_output_filename = "";
-  static struct Arg_parser parser;	/* static because valgrind complains */
-  static struct Pretty_print pp;	/* and memory management in C sucks */
-  static const char ** filenames = 0;
-  int num_filenames = 0;
-  enum Mode program_mode = m_compress;
-  int argind = 0;
-  int failed_tests = 0;
-  int retval = 0;
-  int i;
-  bool filenames_given = false;
-  bool force = false;
-  bool ignore_trailing = true;
-  bool keep_input_files = false;
-  bool loose_trailing = false;
-  bool recompress = false;
-  bool stdin_used = false;
-  bool to_stdout = false;
-
-  enum { opt_chk = 256, opt_lt };
-  const struct ap_Option options[] =
-    {
-    { '0', "fast",              ap_no  },
-    { '1', 0,                   ap_no  },
-    { '2', 0,                   ap_no  },
-    { '3', 0,                   ap_no  },
-    { '4', 0,                   ap_no  },
-    { '5', 0,                   ap_no  },
-    { '6', 0,                   ap_no  },
-    { '7', 0,                   ap_no  },
-    { '8', 0,                   ap_no  },
-    { '9', "best",              ap_no  },
-    { 'a', "trailing-error",    ap_no  },
-    { 'b', "member-size",       ap_yes },
-    { 'c', "stdout",            ap_no  },
-    { 'd', "decompress",        ap_no  },
-    { 'f', "force",             ap_no  },
-    { 'F', "recompress",        ap_no  },
-    { 'h', "help",              ap_no  },
-    { 'k', "keep",              ap_no  },
-    { 'm', "match-length",      ap_yes },
-    { 'n', "threads",           ap_yes },
-    { 'o', "output",            ap_yes },
-    { 'q', "quiet",             ap_no  },
-    { 's', "dictionary-size",   ap_yes },
-    { 'S', "volume-size",       ap_yes },
-    { 't', "test",              ap_no  },
-    { 'v', "verbose",           ap_no  },
-    { 'V', "version",           ap_no  },
-    { opt_chk, "check-lib",     ap_no  },
-    { opt_lt, "loose-trailing", ap_no  },
-    {  0, 0,                    ap_no  } };
-
-  if( argc > 0 ) invocation_name = argv[0];
-
-  if( !ap_init( &parser, argc, argv, options, 0 ) )
-    { show_error( mem_msg, 0, false ); return 1; }
-  if( ap_error( &parser ) )				/* bad option */
-    { show_error( ap_error( &parser ), 0, true ); return 1; }
-
-  for( ; argind < ap_arguments( &parser ); ++argind )
-    {
-    const int code = ap_code( &parser, argind );
-    const char * const arg = ap_argument( &parser, argind );
-    if( !code ) break;					/* no more options */
-    switch( code )
-      {
-      case '0': case '1': case '2': case '3': case '4':
-      case '5': case '6': case '7': case '8': case '9':
-                encoder_options = option_mapping[code-'0']; break;
-      case 'a': ignore_trailing = false; break;
-      case 'b': member_size = getnum( arg, 100000, max_member_size ); break;
-      case 'c': to_stdout = true; break;
-      case 'd': set_mode( &program_mode, m_decompress ); break;
-      case 'f': force = true; break;
-      case 'F': recompress = true; break;
-      case 'h': show_help(); return 0;
-      case 'k': keep_input_files = true; break;
-      case 'm': encoder_options.match_len_limit =
-                  getnum( arg, LZ_min_match_len_limit(),
-                               LZ_max_match_len_limit() ); break;
-      case 'n': break;
-      case 'o': if( strcmp( arg, "-" ) == 0 ) to_stdout = true;
-                else { default_output_filename = arg; } break;
-      case 'q': verbosity = -1; break;
-      case 's': encoder_options.dictionary_size = get_dict_size( arg );
-                break;
-      case 'S': volume_size = getnum( arg, 100000, max_volume_size ); break;
-      case 't': set_mode( &program_mode, m_test ); break;
-      case 'v': if( verbosity < 4 ) ++verbosity; break;
-      case 'V': show_version(); return 0;
-      case opt_chk: return check_lib();
-      case opt_lt: loose_trailing = true; break;
-      default : internal_error( "uncaught option." );
-      }
-    } /* end process options */
-
-  if( strcmp( PROGVERSION, LZ_version_string ) != 0 )
-    internal_error( "wrong PROGVERSION." );
-#if !defined LZ_API_VERSION || LZ_API_VERSION < 1012
-#error "lzlib 1.12 or newer needed."
-#else
-  if( LZ_api_version() < 1012 )	/* minilzip passes null to LZ_decompress_read */
-    { show_error( "lzlib 1.12 or newer needed. Try --check-lib.", 0, false );
-      return 1; }
-  if( LZ_api_version() != LZ_API_VERSION ) show_error(
-    "warning: wrong library API version. Try --check-lib.", 0, false );
-  else
-#endif
-  if( strcmp( LZ_version_string, LZ_version() ) != 0 ) show_error(
-    "warning: wrong library version_string. Try --check-lib.", 0, false );
-
-#if defined(__MSVCRT__) || defined(__OS2__) || defined(__DJGPP__)
-  setmode( STDIN_FILENO, O_BINARY );
-  setmode( STDOUT_FILENO, O_BINARY );
-#endif
-
-  num_filenames = max( 1, ap_arguments( &parser ) - argind );
-  filenames = resize_buffer( filenames, num_filenames * sizeof filenames[0] );
-  filenames[0] = "-";
-
-  for( i = 0; argind + i < ap_arguments( &parser ); ++i )
-    {
-    filenames[i] = ap_argument( &parser, argind + i );
-    if( strcmp( filenames[i], "-" ) != 0 ) filenames_given = true;
-    }
-
-  if( program_mode == m_compress )
-    {
-    if( volume_size > 0 && !to_stdout && default_output_filename[0] &&
-        num_filenames > 1 )
-      { show_error( "Only can compress one file when using '-o' and '-S'.",
-                    0, true ); return 1; }
-    }
-  else volume_size = 0;
-  if( program_mode == m_test ) to_stdout = false;	/* apply overrides */
-  if( program_mode == m_test || to_stdout ) default_output_filename = "";
-
-  output_filename = resize_buffer( output_filename, 1 );
-  output_filename[0] = 0;
-  if( to_stdout && program_mode != m_test )	/* check tty only once */
-    { outfd = STDOUT_FILENO; if( !check_tty_out( program_mode ) ) return 1; }
-  else outfd = -1;
-
-  const bool to_file = !to_stdout && program_mode != m_test &&
-                       default_output_filename[0];
-  if( !to_stdout && program_mode != m_test && ( filenames_given || to_file ) )
-    set_signals( signal_handler );
-
-  Pp_init( &pp, filenames, num_filenames );
-
-  const bool one_to_one = !to_stdout && program_mode != m_test && !to_file;
-  for( i = 0; i < num_filenames; ++i )
-    {
-    const char * input_filename = "";
-    int infd;
-    int tmp;
-    struct stat in_stats;
-    const struct stat * in_statsp;
-
-    Pp_set_name( &pp, filenames[i] );
-    if( strcmp( filenames[i], "-" ) == 0 )
-      {
-      if( stdin_used ) continue; else stdin_used = true;
-      infd = STDIN_FILENO;
-      if( !check_tty_in( pp.name, infd, program_mode, &retval ) ) continue;
-      if( one_to_one ) { outfd = STDOUT_FILENO; output_filename[0] = 0; }
-      }
-    else
-      {
-      const int eindex = extension_index( input_filename = filenames[i] );
-      infd = open_instream( input_filename, &in_stats, program_mode,
-                            eindex, one_to_one, recompress );
-      if( infd < 0 ) { set_retval( &retval, 1 ); continue; }
-      if( !check_tty_in( pp.name, infd, program_mode, &retval ) ) continue;
-      if( one_to_one )			/* open outfd after verifying infd */
-        {
-        if( program_mode == m_compress )
-          set_c_outname( input_filename, true, volume_size > 0 );
-        else set_d_outname( input_filename, eindex );
-        if( !open_outstream( force, true ) )
-          { close( infd ); set_retval( &retval, 1 ); continue; }
-        }
-      }
-
-    if( one_to_one && !check_tty_out( program_mode ) )
-      { set_retval( &retval, 1 ); return retval; }	/* don't delete a tty */
-
-    if( to_file && outfd < 0 )		/* open outfd after verifying infd */
-      {
-      if( program_mode == m_compress ) set_c_outname( default_output_filename,
-                                       false, volume_size > 0 );
-      else
-        { output_filename = resize_buffer( output_filename,
-                            strlen( default_output_filename ) + 1 );
-          strcpy( output_filename, default_output_filename ); }
-      if( !open_outstream( force, false ) || !check_tty_out( program_mode ) )
-        return 1;	/* check tty only once and don't try to delete a tty */
-      }
-
-    in_statsp = ( input_filename[0] && one_to_one ) ? &in_stats : 0;
-    if( program_mode == m_compress )
-      tmp = compress( member_size, volume_size, infd, &encoder_options, &pp,
-                      in_statsp );
-    else
-      tmp = decompress( infd, &pp, ignore_trailing,
-                        loose_trailing, program_mode == m_test );
-    if( close( infd ) != 0 )
-      { show_file_error( pp.name, "Error closing input file", errno );
-        set_retval( &tmp, 1 ); }
-    set_retval( &retval, tmp );
-    if( tmp )
-      { if( program_mode != m_test ) cleanup_and_fail( retval );
-        else ++failed_tests; }
-
-    if( delete_output_on_interrupt && one_to_one )
-      close_and_set_permissions( in_statsp );
-    if( input_filename[0] && !keep_input_files && one_to_one &&
-        ( program_mode != m_compress || volume_size == 0 ) )
-      remove( input_filename );
-    }
-  if( delete_output_on_interrupt ) close_and_set_permissions( 0 );	/* -o */
-  else if( outfd >= 0 && close( outfd ) != 0 )				/* -c */
-    {
-    show_error( "Error closing stdout", errno, false );
-    set_retval( &retval, 1 );
-    }
-  if( failed_tests > 0 && verbosity >= 1 && num_filenames > 1 )
-    fprintf( stderr, "%s: warning: %d %s failed the test.\n",
-             program_name, failed_tests,
-             ( failed_tests == 1 ) ? "file" : "files" );
-  free( output_filename );
-  free( filenames );
-  ap_free( &parser );
-  return retval;
-  }