Adding upstream version 1.1~rc2.upstream/1.1_rc2

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>

1 files changed, 185 insertions, 171 deletions

diff --git a/main.c b/main.c
index 167c2b7..b4737f8 100644
--- a/main.c
+++ b/main.c
@@ -1,4 +1,4 @@
-/*  Clzip - A data compressor based on the LZMA algorithm
+/*  Clzip - Data compressor based on the LZMA algorithm
     Copyright (C) 2010 Antonio Diaz Diaz.
 
     This program is free software: you can redistribute it and/or modify
@@ -35,6 +35,20 @@
 #include <unistd.h>
 #include <utime.h>
 #include <sys/stat.h>
+#if defined(__MSVCRT__)
+#include <io.h>
+#define fchmod(x,y) 0
+#define fchown(x,y,z) 0
+#define SIGHUP SIGTERM
+#define S_ISSOCK(x) 0
+#define S_IRGRP 0
+#define S_IWGRP 0
+#define S_IROTH 0
+#define S_IWOTH 0
+#endif
+#if defined(__OS2__)
+#include <io.h>
+#endif
 
 #include "carg_parser.h"
 #include "clzip.h"
@@ -55,11 +69,13 @@
 #define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL
 #endif
 
+long long int llabs( long long int number );
+
 
+const char * const Program_name = "Clzip";
+const char * const program_name = "clzip";
+const char * const program_year = "2010";
 const char * invocation_name = 0;
-const char * const Program_name    = "Clzip";
-const char * const program_name    = "clzip";
-const char * const program_year    = "2010";
 
 #ifdef O_BINARY
 const int o_binary = O_BINARY;
@@ -74,19 +90,20 @@ struct { const char * from; const char * to; } const known_extensions[] = {
 
 struct Lzma_options
   {
-  int dictionary_size;		// 4KiB..512MiB
-  int match_len_limit;		// 5..273
+  int dictionary_size;		/* 4KiB..512MiB */
+  int match_len_limit;		/* 5..273 */
   };
 
-enum Mode { m_compress = 0, m_decompress, m_test };
+enum Mode { m_compress, m_decompress, m_test };
 
 char * output_filename = 0;
 int outfd = -1;
+int verbosity = 0;
 mode_t outfd_mode = S_IRUSR | S_IWUSR;
 bool delete_output_on_interrupt = false;
 
 
-// assure at least a minimum size for buffer `buf'
+/* assure at least a minimum size for buffer `buf' */
 inline void * resize_buffer( void * buf, const int min_size )
   {
   if( buf ) buf = realloc( buf, min_size );
@@ -97,7 +114,7 @@ inline void * resize_buffer( void * buf, const int min_size )
 
 static void show_help()
   {
-  printf( "%s - A data compressor based on the LZMA algorithm.\n", Program_name );
+  printf( "%s - Data compressor based on the LZMA algorithm.\n", Program_name );
   printf( "\nUsage: %s [options] [files]\n", invocation_name );
   printf( "\nOptions:\n" );
   printf( "  -h, --help                 display this help and exit\n" );
@@ -136,39 +153,33 @@ static void show_version()
   }
 
 
-static const char * format_num( long long num, long long limit,
-                                const int set_prefix )
+static const char * format_num( long long num )
   {
-  const char * const si_prefix[8] =
-    { "k", "M", "G", "T", "P", "E", "Z", "Y" };
-  const char * const binary_prefix[8] =
+  const char * const prefix[8] =
     { "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" };
-  static bool si = false;
-  static char buf[16];
-
-  if( set_prefix ) si = ( set_prefix > 0 );
-  const int factor = ( si ) ? 1000 : 1024;
-  const char * const *prefix = ( si ) ? si_prefix : binary_prefix;
+  enum { buf_size = 16, factor = 1024 };
+  static char buf[buf_size];
   const char *p = "";
-  limit = max( 999LL, min( 999999LL, limit ) );
+  int i;
 
-  for( int i = 0; i < 8 && ( llabs( num ) > limit ||
+  for( i = 0; i < 8 && ( llabs( num ) > 9999 ||
        ( llabs( num ) >= factor && num % factor == 0 ) ); ++i )
     { num /= factor; p = prefix[i]; }
-  snprintf( buf, sizeof buf, "%lld %s", num, p );
+  snprintf( buf, buf_size, "%lld %s", num, p );
   return buf;
   }
 
 
-static long long getnum( const char * const ptr, const int bs,
+static long long getnum( const char * const ptr,
                          const long long llimit, const long long ulimit )
   {
-  errno = 0;
+  long long result;
   char *tail;
-  long long result = strtoll( ptr, &tail, 0 );
+  errno = 0;
+  result = strtoll( ptr, &tail, 0 );
   if( tail == ptr )
     {
-    show_error( "bad or missing numerical argument", 0, true );
+    show_error( "Bad or missing numerical argument.", 0, true );
     exit( 1 );
     }
 
@@ -176,13 +187,11 @@ static long long getnum( const char * const ptr, const int bs,
     {
     int factor = ( tail[1] == 'i' ) ? 1024 : 1000;
     int exponent = 0;
+    int i;
     bool bad_multiplier = false;
     switch( tail[0] )
       {
       case ' ': break;
-      case 'b': if( bs > 0 ) { factor = bs; exponent = 1; }
-                else bad_multiplier = true;
-                break;
       case 'Y': exponent = 8; break;
       case 'Z': exponent = 7; break;
       case 'E': exponent = 6; break;
@@ -198,10 +207,10 @@ static long long getnum( const char * const ptr, const int bs,
       }
     if( bad_multiplier )
       {
-      show_error( "bad multiplier in numerical argument", 0, true );
+      show_error( "Bad multiplier in numerical argument.", 0, true );
       exit( 1 );
       }
-    for( int i = 0; i < exponent; ++i )
+    for( i = 0; i < exponent; ++i )
       {
       if( LLONG_MAX / factor >= llabs( result ) ) result *= factor;
       else { errno = ERANGE; break; }
@@ -210,7 +219,7 @@ static long long getnum( const char * const ptr, const int bs,
   if( !errno && ( result < llimit || result > ulimit ) ) errno = ERANGE;
   if( errno )
     {
-    show_error( "numerical argument out of limits", 0, false );
+    show_error( "Numerical argument out of limits.", 0, false );
     exit( 1 );
     }
   return result;
@@ -224,13 +233,14 @@ static int get_dict_size( const char * const arg )
   if( bits >= min_dictionary_bits &&
       bits <= max_dictionary_bits && *tail == 0 )
     return ( 1 << bits );
-  return getnum( arg, 0, min_dictionary_size, max_dictionary_size );
+  return getnum( arg, min_dictionary_size, max_dictionary_size );
   }
 
 
 static int extension_index( const char * const name )
   {
-  for( int i = 0; known_extensions[i].from; ++i )
+  int i;
+  for( i = 0; known_extensions[i].from; ++i )
     {
     const char * const ext = known_extensions[i].from;
     if( strlen( name ) > strlen( ext ) &&
@@ -249,7 +259,7 @@ static int open_instream( const char * const name, struct stat * const in_statsp
   if( program_mode == m_compress && !force && eindex >= 0 )
     {
     if( verbosity >= 0 )
-      fprintf( stderr, "%s: input file `%s' already has `%s' suffix.\n",
+      fprintf( stderr, "%s: Input file `%s' already has `%s' suffix.\n",
                program_name, name, known_extensions[eindex].from );
     }
   else
@@ -265,14 +275,16 @@ static int open_instream( const char * const name, struct stat * const in_statsp
       {
       const int i = fstat( infd, in_statsp );
       const mode_t mode = in_statsp->st_mode;
-      if( i < 0 || !( S_ISREG( mode ) || ( to_stdout &&
-                      ( S_ISFIFO( mode ) || S_ISSOCK( mode ) ||
-                        S_ISBLK( mode ) || S_ISCHR( 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 ) && ( !to_stdout || !can_read ) ) )
         {
         if( verbosity >= 0 )
-          fprintf( stderr, "%s: input file `%s' is not a regular file%s.\n",
+          fprintf( stderr, "%s: Input file `%s' is not a regular file%s.\n",
                    program_name, name,
-                   to_stdout ? "" : " and `--stdout' was not specified" );
+                   ( can_read && !to_stdout ) ?
+                   " and `--stdout' was not specified" : "" );
         close( infd );
         infd = -1;
         }
@@ -311,7 +323,7 @@ static void set_d_outname( const char * const name, const int i )
   strcpy( output_filename, name );
   strcat( output_filename, ".out" );
   if( verbosity >= 0 )
-    fprintf( stderr, "%s: can't guess original name for `%s' -- using `%s'.\n",
+    fprintf( stderr, "%s: Can't guess original name for `%s' -- using `%s'.\n",
              program_name, name, output_filename );
   }
 
@@ -322,18 +334,14 @@ static bool open_outstream( const bool force )
   if( force ) flags |= O_TRUNC; else flags |= O_EXCL;
 
   outfd = open( output_filename, flags, outfd_mode );
-  if( outfd < 0 )
+  if( outfd < 0 && verbosity >= 0 )
     {
-    if( errno == EEXIST ) outfd = -2; else outfd = -1;
-    if( verbosity >= 0 )
-      {
-      if( outfd == -2 )
-        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 ) );
-      }
+    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 );
   }
@@ -341,7 +349,7 @@ static bool open_outstream( const bool force )
 
 static bool check_tty( const int infd, const enum Mode program_mode )
   {
-  if( program_mode == m_compress && isatty( outfd ) )
+  if( program_mode == m_compress && outfd >= 0 && isatty( outfd ) )
     {
     show_error( "I won't write compressed data to a terminal.", 0, true );
     return false;
@@ -356,15 +364,32 @@ static bool check_tty( const int infd, const enum Mode program_mode )
   }
 
 
-     // Set permissions, owner and times.
+void cleanup_and_fail( const int retval )
+  {
+  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 )
+      show_error( "WARNING: deletion of output file (apparently) failed.", 0, false );
+    }
+  exit( retval );
+  }
+
+
+     /* Set permissions, owner and times. */
 static void close_and_set_permissions( const struct stat * const in_statsp )
   {
   bool error = false;
   if( in_statsp )
     {
-    if( fchmod( outfd, in_statsp->st_mode ) != 0 ) error = true;
-    else (void)fchown( outfd, in_statsp->st_uid, in_statsp->st_gid );
-    // fchown will in many cases return with EPERM, which can be safely ignored.
+    if( fchmod( outfd, in_statsp->st_mode ) != 0 ||
+        ( fchown( outfd, in_statsp->st_uid, in_statsp->st_gid ) != 0 &&
+          errno != EPERM ) ) error = true;
+    /* fchown will in many cases return with EPERM, which can be safely ignored. */
     }
   if( close( outfd ) == 0 ) outfd = -1;
   else cleanup_and_fail( 1 );
@@ -379,7 +404,7 @@ static void close_and_set_permissions( const struct stat * const in_statsp )
     }
   if( error )
     {
-    show_error( "I can't change output file attributes.", 0, false );
+    show_error( "Can't change output file attributes.", 0, false );
     cleanup_and_fail( 1 );
     }
   }
@@ -388,8 +413,10 @@ static void close_and_set_permissions( const struct stat * const in_statsp )
 static bool next_filename()
   {
   const unsigned int len = strlen( known_extensions[0].from );
-  if( strlen( output_filename ) >= len + 5 )		// "*00001.lz"
-    for( int i = strlen( output_filename ) - len - 1, j = 0; j < 5; --i, ++j )
+  int i, j;
+
+  if( strlen( output_filename ) >= len + 5 )		/* "*00001.lz" */
+    for( i = strlen( output_filename ) - len - 1, j = 0; j < 5; --i, ++j )
       {
       if( output_filename[i] < '9' ) { ++output_filename[i]; return true; }
       else output_filename[i] = '0';
@@ -403,29 +430,30 @@ static int compress( const long long member_size, const long long volume_size,
                      const int infd, struct Pretty_print * const pp,
                      const struct stat * const in_statsp )
   {
-  if( verbosity >= 1 ) Pp_show_msg( pp, 0 );
+  long long in_size = 0, out_size = 0, partial_volume_size = 0;
+  int retval = 0;
   File_header header;
+  struct Matchfinder matchfinder;
+
+  if( verbosity >= 1 ) Pp_show_msg( pp, 0 );
   Fh_set_magic( header );
   if( !Fh_set_dictionary_size( header, encoder_options->dictionary_size ) ||
       encoder_options->match_len_limit < min_match_len_limit ||
       encoder_options->match_len_limit > max_match_len )
     internal_error( "invalid argument to encoder" );
 
-  struct Matchfinder matchfinder;
   Mf_init( &matchfinder, Fh_get_dictionary_size( header ),
            encoder_options->match_len_limit, infd );
   Fh_set_dictionary_size( header, Mf_dictionary_size( &matchfinder ) );
 
-  long long in_size = 0, out_size = 0, partial_volume_size = 0;
-  int retval = 0;
-  while( true )		// encode one member per iteration
+  while( true )		/* encode one member per iteration */
     {
     struct LZ_encoder encoder;
-    LZe_init( &encoder, &matchfinder, header, outfd );
     const long long size =
       min( member_size, volume_size - partial_volume_size );
+    LZe_init( &encoder, &matchfinder, header, outfd );
     if( !LZe_encode_member( &encoder, size ) )
-      { Pp_show_msg( pp, "encoder error" ); retval = 1; break; }
+      { Pp_show_msg( pp, "Encoder error" ); retval = 1; break; }
     in_size += Mf_data_position( &matchfinder );
     out_size += LZe_member_position( &encoder );
     partial_volume_size += LZe_member_position( &encoder );
@@ -438,21 +466,18 @@ static int compress( const long long member_size, const long long volume_size,
         {
         close_and_set_permissions( in_statsp );
         if( !next_filename() )
-          { Pp_show_msg( pp, "too many volume files" ); retval = 1; break; }
+          { Pp_show_msg( pp, "Too many volume files" ); retval = 1; break; }
         if( !open_outstream( true ) ) { retval = 1; break; }
         delete_output_on_interrupt = true;
         }
       }
-    if( !Mf_reset( &matchfinder ) )
-      { Pp_show_msg( pp, 0 );
-        show_error( "can't reset matchfinder", errno, false );
-        retval = 1; break; }
+    Mf_reset( &matchfinder );
     }
 
   if( retval == 0 && verbosity >= 1 )
     {
     if( in_size <= 0 || out_size <= 0 )
-      fprintf( stderr, "no data compressed.\n" );
+      fprintf( stderr, "No data compressed.\n" );
     else
       fprintf( stderr, "%6.3f:1, %6.3f bits/byte, "
                        "%5.2f%% saved, %lld in, %lld out.\n",
@@ -469,40 +494,42 @@ static int compress( const long long member_size, const long long volume_size,
 static int decompress( const int infd, struct Pretty_print * const pp,
                        const bool testing )
   {
+  long long partial_file_pos = 0;
   struct Range_decoder rdec;
+  int retval = 0, i, result;
+  bool first_member;
   Rd_init( &rdec, infd );
-  long long partial_file_pos = 0;
-  int retval = 0;
 
-  for( bool first_member = true; ; first_member = false, Pp_reset( pp ) )
+  for( first_member = true; ; first_member = false, Pp_reset( pp ) )
     {
     File_header header;
+    struct LZ_decoder decoder;
     Rd_reset_member_position( &rdec );
-    for( int i = 0; i < Fh_size; ++i )
+    for( i = 0; i < Fh_size; ++i )
       header[i] = Rd_get_byte( &rdec );
-    if( Rd_finished( &rdec ) )		// End Of File
+    if( Rd_finished( &rdec ) )		/* End Of File */
       {
       if( first_member )
-        { Pp_show_msg( pp, "error reading member header" ); retval = 1; }
+        { Pp_show_msg( pp, "Error reading member header" ); retval = 1; }
       break;
       }
     if( !Fh_verify_magic( header ) )
       {
-      if( !first_member ) break;		// trailing garbage
-      Pp_show_msg( pp, "bad magic number (file not in lzip format)" );
+      if( !first_member ) break;		/* trailing garbage */
+      Pp_show_msg( pp, "Bad magic number (file not in lzip format)" );
       retval = 2; break;
       }
     if( !Fh_verify_version( header ) )
       {
       if( verbosity >= 0 )
         { Pp_show_msg( pp, 0 );
-          fprintf( stderr, "version %d member format not supported, newer %s needed.\n",
-                   Fh_version( header ), program_name ); }
+          fprintf( stderr, "Version %d member format not supported.\n",
+                   Fh_version( header ) ); }
       retval = 2; break;
       }
     if( Fh_get_dictionary_size( header ) < min_dictionary_size ||
         Fh_get_dictionary_size( header ) > max_dictionary_size )
-      { Pp_show_msg( pp, "invalid dictionary size in member header" );
+      { Pp_show_msg( pp, "Invalid dictionary size in member header" );
         retval = 2; break; }
 
     if( verbosity >= 1 )
@@ -511,12 +538,11 @@ static int decompress( const int infd, struct Pretty_print * const pp,
       if( verbosity >= 2 )
         fprintf( stderr, "version %d, dictionary size %7sB.  ",
                  Fh_version( header ),
-                 format_num( Fh_get_dictionary_size( header ), 9999, 0 ) );
+                 format_num( Fh_get_dictionary_size( header ) ) );
       }
-    struct LZ_decoder decoder;
     LZd_init( &decoder, header, &rdec, outfd );
 
-    const int result = LZd_decode_member( &decoder, pp );
+    result = LZd_decode_member( &decoder, pp );
     partial_file_pos += Rd_member_position( &rdec );
     LZd_free( &decoder );
     if( result != 0 )
@@ -525,10 +551,10 @@ static int decompress( const int infd, struct Pretty_print * const pp,
         {
         Pp_show_msg( pp, 0 );
         if( result == 2 )
-          fprintf( stderr, "file ends unexpectedly at pos %lld\n",
+          fprintf( stderr, "File ends unexpectedly at pos %lld\n",
                    partial_file_pos );
         else
-          fprintf( stderr, "decoder error at pos %lld\n", partial_file_pos );
+          fprintf( stderr, "Decoder error at pos %lld\n", partial_file_pos );
         }
       retval = 2; break;
       }
@@ -543,7 +569,7 @@ static int decompress( const int infd, struct Pretty_print * const pp,
 
 void signal_handler( int sig )
   {
-  sig = 0;			// keep compiler happy
+  sig = 0;			/* keep compiler happy */
   show_error( "Control-C or similar caught, quitting.", 0, false );
   cleanup_and_fail( 1 );
   }
@@ -557,19 +583,19 @@ static void set_signals()
   }
 
 
-int verbosity = 0;
-
-
 void Pp_init( struct Pretty_print * const pp, const char * const filenames[],
-              const int num_filenames )
+              const int num_filenames, const int v )
   {
+  unsigned int stdin_name_len;
+  int i;
   pp->name_ = 0;
   pp->stdin_name = "(stdin)";
   pp->longest_name = 0;
+  pp->verbosity = v;
   pp->first_post = false;
-  unsigned int stdin_name_len = strlen( pp->stdin_name );
+  stdin_name_len = strlen( pp->stdin_name );
 
-  for( int i = 0; i < num_filenames; ++i )
+  for( i = 0; i < num_filenames; ++i )
     {
     const char * const s = filenames[i];
     const int len = ( !strcmp( s, "-" ) ? stdin_name_len : strlen( s ) );
@@ -585,10 +611,11 @@ void Pp_show_msg( struct Pretty_print * const pp, const char * const msg )
     {
     if( pp->first_post )
       {
+      int i, len;
       pp->first_post = false;
       fprintf( stderr, "  %s: ", pp->name_ );
-      const int len = pp->longest_name - strlen( pp->name_ );
-      for( int i = 0; i < len; ++i ) fprintf( stderr, " " );
+      len = pp->longest_name - strlen( pp->name_ );
+      for( i = 0; i < len; ++i ) fprintf( stderr, " " );
       if( !msg ) fflush( stderr );
       }
     if( msg ) fprintf( stderr, "%s.\n", msg );
@@ -596,33 +623,17 @@ void Pp_show_msg( struct Pretty_print * const pp, const char * const msg )
   }
 
 
-void cleanup_and_fail( const int retval )
-  {
-  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 )
-      show_error( "WARNING: deletion of output file (apparently) failed.", 0, false );
-    }
-  exit( retval );
-  }
-
-
 void show_error( const char * const msg, const int errcode, const bool help )
   {
   if( verbosity >= 0 )
     {
-    if( msg && msg[0] != 0 )
+    if( msg && msg[0] )
       {
       fprintf( stderr, "%s: %s", program_name, msg );
       if( errcode > 0 ) fprintf( stderr, ": %s", strerror( errcode ) );
       fprintf( stderr, "\n" );
       }
-    if( help && invocation_name && invocation_name[0] != 0 )
+    if( help && invocation_name && invocation_name[0] )
       fprintf( stderr, "Try `%s --help' for more information.\n", invocation_name );
     }
   }
@@ -630,27 +641,24 @@ void show_error( const char * const msg, const int errcode, const bool help )
 
 void internal_error( const char * const msg )
   {
-  const char * const e = "internal error: ";
-  char * s = resize_buffer( 0, strlen( e ) + strlen( msg ) + 1 );
-  strcpy( s, e );
-  strcat( s, msg );
-  show_error( s, 0, false );
-  free( s );
+  if( verbosity >= 0 )
+    fprintf( stderr, "%s: internal error: %s.\n", program_name, msg );
   exit( 3 );
   }
 
 
-// Returns the number of bytes really read.
-// If (returned value < size) and (errno == 0), means EOF was reached.
-//
+/* Returns the number of bytes really read.
+   If (returned value < size) and (errno == 0), means EOF was reached.
+*/
 int readblock( const int fd, uint8_t * const buf, const int size )
   {
   int rest = size;
   errno = 0;
   while( rest > 0 )
     {
+    int n;
     errno = 0;
-    const int n = read( fd, buf + size - rest, rest );
+    n = read( fd, buf + size - rest, rest );
     if( n > 0 ) rest -= n;
     else if( n == 0 ) break;
     else if( errno != EINTR && errno != EAGAIN ) break;
@@ -659,17 +667,18 @@ int readblock( const int fd, uint8_t * const buf, const int size )
   }
 
 
-// Returns the number of bytes really written.
-// If (returned value < size), it is always an error.
-//
+/* Returns the number of bytes really written.
+   If (returned value < size), it is always an error.
+*/
 int writeblock( const int fd, const uint8_t * const buf, const int size )
   {
   int rest = size;
   errno = 0;
   while( rest > 0 )
     {
+    int n;
     errno = 0;
-    const int n = write( fd, buf + size - rest, rest );
+    n = write( fd, buf + size - rest, rest );
     if( n > 0 ) rest -= n;
     else if( errno && errno != EINTR && errno != EAGAIN ) break;
     }
@@ -677,29 +686,31 @@ int writeblock( const int fd, const uint8_t * const buf, const int size )
   }
 
 
-CRC32 crc32;
-
 int main( const int argc, const char * const argv[] )
   {
-  // Mapping from gzip/bzip2 style 1..9 compression modes
-  // to the corresponding LZMA compression modes.
+  /* Mapping from gzip/bzip2 style 1..9 compression modes
+     to the corresponding LZMA compression modes. */
   const struct Lzma_options option_mapping[] =
     {
-    { 1 << 16,   5 },		// -0
-    { 1 << 20,  10 },		// -1
-    { 3 << 19,  12 },		// -2
-    { 1 << 21,  17 },		// -3
-    { 3 << 20,  26 },		// -4
-    { 1 << 22,  44 },		// -5
-    { 1 << 23,  80 },		// -6
-    { 1 << 24, 108 },		// -7
-    { 3 << 23, 163 },		// -8
-    { 1 << 25, 273 } };		// -9
-  struct Lzma_options encoder_options = option_mapping[6];	// default = "-6"
+    { 1 << 20,   5 },		/* -0 */
+    { 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" */
   long long member_size = LLONG_MAX;
   long long volume_size = LLONG_MAX;
   int infd = -1;
   enum Mode program_mode = m_compress;
+  int argind = 0;
+  int retval = 0;
+  int i;
+  bool filenames_given = false;
   bool force = false;
   bool keep_input_files = false;
   bool to_stdout = false;
@@ -707,13 +718,12 @@ int main( const int argc, const char * const argv[] )
   const char * default_output_filename = "";
   const char ** filenames = 0;
   int num_filenames = 0;
-  invocation_name = argv[0];
-  CRC32_init();
+  struct Pretty_print pp;
 
   const struct ap_Option options[] =
     {
-    { '0',  0,                ap_no  },
-    { '1', "fast",            ap_no  },
+    { '0', "fast",            ap_no  },
+    { '1',  0,                ap_no  },
     { '2',  0,                ap_no  },
     { '3',  0,                ap_no  },
     { '4',  0,                ap_no  },
@@ -740,44 +750,51 @@ int main( const int argc, const char * const argv[] )
     {  0 ,  0,                ap_no  } };
 
   struct Arg_parser parser;
+
+  invocation_name = argv[0];
+  CRC32_init();
   if( !ap_init( &parser, argc, argv, options, 0 ) )
-    { show_error( "memory exhausted", 0, false ); return 1; }
-  if( ap_error( &parser ) )				// bad option
+    { show_error( "Memory exhausted.", 0, false ); return 1; }
+  if( ap_error( &parser ) )				/* bad option */
     { show_error( ap_error( &parser ), 0, true ); return 1; }
 
-  int argind = 0;
   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
+    if( !code ) break;				/* no more options */
     switch( code )
       {
-      case '0': case '1': case '2': case '3': case '4':
+      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 'b': member_size = getnum( arg, 0, 100000, LLONG_MAX / 2 ); break;
+      case 'b': member_size = getnum( arg, 100000, LLONG_MAX / 2 ); break;
       case 'c': to_stdout = true; break;
       case 'd': program_mode = m_decompress; break;
-      case 'e': break;				// ignored by now
+      case 'e': break;				/* ignored by now */
       case 'f': force = true; break;
       case 'h': show_help(); return 0;
       case 'k': keep_input_files = true; break;
       case 'm': encoder_options.match_len_limit =
-                getnum( arg, 0, min_match_len_limit, max_match_len ); break;
+                  getnum( arg, min_match_len_limit, max_match_len ); break;
       case 'o': 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, 0, 100000, LLONG_MAX / 2 ); break;
+      case 'S': volume_size = getnum( arg, 100000, LLONG_MAX / 2 ); break;
       case 't': program_mode = m_test; break;
       case 'v': if( verbosity < 4 ) ++verbosity; break;
       case 'V': show_version(); return 0;
       default : internal_error( "uncaught option" );
       }
-    }
+    } /* end process options */
+
+#if defined(__MSVCRT__) || defined(__OS2__)
+  _setmode( STDIN_FILENO, O_BINARY );
+  _setmode( STDOUT_FILENO, O_BINARY );
+#endif
 
-  bool filenames_given = false;
   for( ; argind < ap_arguments( &parser ); ++argind )
     {
     if( strcmp( ap_argument( &parser, argind ), "-" ) )
@@ -797,8 +814,7 @@ int main( const int argc, const char * const argv[] )
       ( filenames_given || default_output_filename[0] ) )
     set_signals();
 
-  struct Pretty_print pp;
-  Pp_init( &pp, filenames, num_filenames );
+  Pp_init( &pp, filenames, num_filenames, verbosity );
   if( program_mode == m_test )
     outfd = -1;
   else if( program_mode == m_compress )
@@ -808,10 +824,11 @@ int main( const int argc, const char * const argv[] )
     }
 
   output_filename = resize_buffer( output_filename, 1 );
-  int retval = 0;
-  for( int i = 0; i < num_filenames; ++i )
+  for( i = 0; i < num_filenames; ++i )
     {
+    int tmp;
     struct stat in_stats;
+    const struct stat * in_statsp;
     output_filename[0] = 0;
 
     if( !filenames[i][0] || !strcmp( filenames[i], "-" ) )
@@ -844,8 +861,8 @@ int main( const int argc, const char * const argv[] )
       }
     else
       {
+      const int eindex = extension_index( filenames[i] );
       input_filename = filenames[i];
-      const int eindex = extension_index( input_filename );
       infd = open_instream( input_filename, &in_stats, program_mode,
                             eindex, force, to_stdout );
       if( infd < 0 ) { if( retval < 1 ) retval = 1; continue; }
@@ -872,9 +889,8 @@ int main( const int argc, const char * const argv[] )
 
     if( output_filename[0] && !to_stdout && program_mode != m_test )
       delete_output_on_interrupt = true;
-    const struct stat * const in_statsp = input_filename[0] ? &in_stats : 0;
+    in_statsp = input_filename[0] ? &in_stats : 0;
     Pp_set_name( &pp, input_filename );
-    int tmp = 0;
     if( program_mode == m_compress )
       tmp = compress( member_size, volume_size, &encoder_options, infd,
                       &pp, in_statsp );
@@ -894,9 +910,7 @@ int main( const int argc, const char * const argv[] )
     }
   if( outfd >= 0 && close( outfd ) != 0 )
     {
-    if( verbosity >= 0 )
-      fprintf( stderr, "%s: Can't close stdout: %s.\n",
-               program_name, strerror( errno ) );
+    show_error( "Can't close stdout", errno, false );
     if( retval < 1 ) retval = 1;
     }
   free( output_filename );