Adding upstream version 1.13.upstream/1.13upstream

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

1 files changed, 1249 insertions, 0 deletions

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..6d0fcc1
--- /dev/null
+++ b/main.c
@@ -0,0 +1,1249 @@
+/* Pdlzip - LZMA lossless data compressor
+   2009-08-14 : Igor Pavlov : Public domain
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
+
+   This program is free software. 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. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions, and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   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.
+*/
+/*
+   Exit status: 0 for a normal exit, 1 for environmental problems
+   (file not found, invalid command-line options, I/O errors, etc), 2 to
+   indicate a corrupt or invalid input file, 3 for an internal consistency
+   error (e.g., bug) which caused pdlzip to panic.
+*/
+
+#define _FILE_OFFSET_BITS 64
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>		/* SSIZE_MAX */
+#include <signal.h>
+#include <stdbool.h>
+#include <stdint.h>		/* SIZE_MAX */
+#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 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 "lzip.h"
+#include "LzmaDec.h"
+#include "LzmaEnc.h"
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+#if CHAR_BIT != 8
+#error "Environments where CHAR_BIT != 8 are not supported."
+#endif
+
+#if ( defined  SIZE_MAX &&  SIZE_MAX < UINT_MAX ) || \
+    ( defined SSIZE_MAX && SSIZE_MAX <  INT_MAX )
+#error "Environments where 'size_t' is narrower than 'int' are not supported."
+#endif
+
+int verbosity = 0;
+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 program_name = "pdlzip";
+static const char * const program_year = "2024";
+static const char * invocation_name = "pdlzip";		/* default value */
+
+static const struct { const char * from; const char * to; } known_extensions[] = {
+  { ".lz",   ""     },
+  { ".tlz",  ".tar" },
+  { ".lzma", ""     },
+  { 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( "Pdlzip is a permissively licensed implementation of the lzip data\n"
+          "compressor, intended for those who can't distribute (or even use) GPL\n"
+          "licensed Free Software. The name of pdlzip comes from 'public domain lzip'.\n"
+          "Pdlzip is written in C and is 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 to maximize interoperability. The\n"
+          "maximum dictionary size is 512 MiB so that any lzip file can be decompressed\n"
+          "on 32-bit machines. Lzip provides accurate and robust 3-factor integrity\n"
+          "checking. Lzip can compress about as fast as gzip (lzip -0) or compress most\n"
+          "files more than bzip2 (lzip -9). Decompression speed is intermediate between\n"
+          "gzip and bzip2. Lzip is better than gzip and bzip2 from a data recovery\n"
+          "perspective. Lzip has been designed, written, and tested with great care to\n"
+          "replace gzip and bzip2 as the standard general-purpose compressed format for\n"
+          "Unix-like systems.\n"
+          "\nPdlzip is also able to decompress legacy lzma-alone (.lzma) files.\n"
+          "Lzma-alone is a very bad format; it is essentially a raw LZMA stream.\n"
+          "If you keep any lzma-alone files, it is advisable to recompress them to\n"
+          "lzip format. Lziprecover can convert some lzma-alone files to lzip format\n"
+          "without recompressing.\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"
+          "  -c, --stdout                   write to standard output, keep input files\n"
+          "  -d, --decompress               decompress, test compressed file integrity\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"
+          "  -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"
+          "\nIf no file names are given, or if a file is '-', pdlzip 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 27 are interpreted as powers of two, meaning 2^12 to\n"
+          "2^27 bytes.\n"
+          "\nThe bidimensional parameter space of LZMA can't be mapped to a linear scale\n"
+          "optimal for all files. If your files are large, very repetitive, etc, you\n"
+          "may need to use the options --dictionary-size and --match-length directly\n"
+          "to achieve optimal performance. For example, -9m64 usually compresses\n"
+          "executables more (and faster) than -9.\n"
+          "\nTo extract all the files from archive 'foo.tar.lz', use the commands\n"
+          "'tar -xf foo.tar.lz' or 'pdlzip -cd foo.tar.lz | tar -xf -'.\n"
+          "\nExit status: 0 for a normal exit, 1 for environmental problems\n"
+          "(file not found, invalid command-line options, I/O errors, etc), 2 to\n"
+          "indicate a corrupt or invalid input file, 3 for an internal consistency\n"
+          "error (e.g., bug) which caused pdlzip to panic.\n"
+          "\nPdlzip includes public domain compression/decompression code from the LZMA\n"
+          "SDK (Software Development Kit) written by Igor Pavlov.\n"
+          "\nReport bugs to lzip-bug@nongnu.org\n"
+          "Pdlzip home page: http://www.nongnu.org/lzip/pdlzip.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( "Public Domain 2009 Igor Pavlov.\n"
+          "License 2-clause BSD.\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" );
+  }
+
+
+/* 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 )
+  {
+  pp->name = 0;
+  pp->padded_name = 0;
+  pp->stdin_name = "(stdin)";
+  pp->longest_name = 0;
+  pp->first_post = false;
+
+  if( verbosity <= 0 ) return;
+  const unsigned stdin_name_len = strlen( pp->stdin_name );
+  int i;
+  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 ) return;
+  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, n = 3 };
+  const char * const prefix[n] = { "Ki", "Mi", "Gi" };
+  const char * p = "";
+  const char * np = "  ";
+  unsigned num = dictionary_size;
+  bool exact = ( num % factor == 0 );
+
+  int i; for( i = 0; i < n && ( 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 );
+  }
+
+
+/* separate numbers of 5 or more digits in groups of 3 digits using '_' */
+static const char * format_num3( unsigned long long num )
+  {
+  enum { buffers = 8, bufsize = 4 * sizeof num, n = 10 };
+  const char * const si_prefix = "kMGTPEZYRQ";
+  const char * const binary_prefix = "KMGTPEZYRQ";
+  static char buffer[buffers][bufsize];	/* circle of static buffers for printf */
+  static int current = 0;
+  int i;
+  char * const buf = buffer[current++]; current %= buffers;
+  char * p = buf + bufsize - 1;		/* fill the buffer backwards */
+  *p = 0;	/* terminator */
+  if( num > 1024 )
+    {
+    char prefix = 0;			/* try binary first, then si */
+    for( i = 0; i < n && num != 0 && num % 1024 == 0; ++i )
+      { num /= 1024; prefix = binary_prefix[i]; }
+    if( prefix ) *(--p) = 'i';
+    else
+      for( i = 0; i < n && num != 0 && num % 1000 == 0; ++i )
+        { num /= 1000; prefix = si_prefix[i]; }
+    if( prefix ) *(--p) = prefix;
+    }
+  const bool split = num >= 10000;
+
+  for( i = 0; ; )
+    {
+    *(--p) = num % 10 + '0'; num /= 10; if( num == 0 ) break;
+    if( split && ++i >= 3 ) { i = 0; *(--p) = '_'; }
+    }
+  return p;
+  }
+
+
+void show_option_error( const char * const arg, const char * const msg,
+                        const char * const option_name )
+  {
+  if( verbosity >= 0 )
+    fprintf( stderr, "%s: '%s': %s option '%s'.\n",
+             program_name, arg, msg, option_name );
+  }
+
+
+/* Recognized formats: <num>k, <num>Ki, <num>[MGTPEZYRQ][i] */
+static unsigned long getnum( const char * const arg,
+                             const char * const option_name,
+                             const unsigned long llimit,
+                             const unsigned long ulimit )
+  {
+  char * tail;
+  errno = 0;
+  unsigned long result = strtoul( arg, &tail, 0 );
+  if( tail == arg )
+    { show_option_error( arg, "Bad or missing numerical argument in",
+                         option_name ); 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 'Q': exponent = 10; break;
+      case 'R': exponent = 9; break;
+      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_option_error( arg, "Bad multiplier in numerical argument of",
+                           option_name ); 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 )
+    {
+    if( verbosity >= 0 )
+      fprintf( stderr, "%s: '%s': Value out of limits [%s,%s] in "
+               "option '%s'.\n", program_name, arg, format_num3( llimit ),
+               format_num3( ulimit ), option_name );
+    exit( 1 );
+    }
+  return result;
+  }
+
+
+static int get_dict_size( const char * const arg, const char * const option_name )
+  {
+  char * tail;
+  const long bits = strtol( arg, &tail, 0 );
+  if( bits >= min_dictionary_bits &&
+      bits <= max_dictionary_bits_c && *tail == 0 )
+    return 1 << bits;
+  return getnum( arg, option_name, min_dictionary_size, max_dictionary_size_c );
+  }
+
+
+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 filenames_given,
+                           const bool force_ext )
+  {
+  /* zupdate < 1.9 depends on lzip adding the extension '.lz' to name when
+     reading from standard input. */
+  output_filename = resize_buffer( output_filename, strlen( name ) +
+                                   strlen( known_extensions[0].from ) + 1 );
+  strcpy( output_filename, name );
+  if( force_ext ||
+      ( !filenames_given && extension_index( output_filename ) < 0 ) )
+    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: %s: Can't guess original name -- 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 )
+  {
+  if( program_mode == m_compress && !recompress && eindex >= 0 )
+    {
+    if( verbosity >= 0 )
+      fprintf( stderr, "%s: %s: Input file already has '%s' suffix.\n",
+               program_name, name, known_extensions[eindex].from );
+    return -1;
+    }
+  int 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: %s: Input file 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( errno == EEXIST )
+    show_file_error( output_filename,
+                     "Output file already exists, skipping.", 0 );
+  else
+    show_file_error( output_filename, "Can't create output file", 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;
+    show_file_error( output_filename, "Deleting output file, if it exists.", 0 );
+    if( outfd >= 0 ) { close( outfd ); outfd = -1; }
+    if( remove( output_filename ) != 0 && errno != ENOENT )
+      show_error( "warning: deletion of output file failed", errno, 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 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, 2 );
+      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 in many cases returns 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_file_error( output_filename, "Error closing output file", errno );
+      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_file_error( output_filename,
+                     "warning: can't change output file attributes", errno );
+  }
+
+
+static int compress( const int infd, const struct Lzma_options * const
+                     encoder_options, struct Pretty_print * const pp )
+  {
+  int retval = 0;
+  CLzmaEncHandle encoder = 0;
+  Lzip_header header;
+  Lh_set_magic( header );
+
+  if( verbosity >= 1 ) Pp_show_msg( pp, 0 );
+  if( Lh_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 )
+    encoder = LzmaEnc_Init( Lh_get_dictionary_size( header ),
+                            encoder_options->match_len_limit, infd, outfd );
+  else internal_error( "invalid argument to encoder." );
+
+  if( !encoder )
+    {
+    Pp_show_msg( pp, "Not enough memory. Try a smaller dictionary size." );
+    return 1;
+    }
+
+  if( writeblock( outfd, header, Lh_size ) != Lh_size )
+    { show_error( "Can't write output file", errno, false ); retval = 1; }
+  else
+    if( LzmaEnc_Encode( encoder ) != 0 )
+      { Pp_show_msg( pp, "Encoder error." ); retval = 1; }
+  LzmaEnc_Free( encoder );
+  return retval;
+  }
+
+
+static void show_results( const long long data_size,
+                          const long long member_size, const unsigned crc,
+                          const unsigned dictionary_size, const bool lzip_mode )
+  {
+  if( verbosity >= 2 )
+    {
+    if( verbosity >= 4 ) show_header( dictionary_size );
+    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 && lzip_mode ) fprintf( stderr, "CRC %08X, ", crc );
+    if( verbosity >= 3 )
+      fprintf( stderr, "%9llu out, %8llu in. ", data_size, member_size );
+    if( !lzip_mode ) fputs( "lzma-alone, ", stderr );
+    }
+  }
+
+
+#define IN_BUF_SIZE (1 << 16)
+#define OUT_BUF_SIZE (1 << 16)
+
+static bool read_inbuf( const int infd, uint8_t inBuf[],
+                        int * const inPos, int * const inSize )
+  {
+  int rest;
+  if( *inPos >= *inSize ) *inSize = 0;
+  else if( *inPos > 0 )
+    {
+    memmove( inBuf, inBuf + *inPos, *inSize - *inPos );
+    *inSize -= *inPos;
+    }
+  *inPos = 0;
+  rest = IN_BUF_SIZE - *inSize;
+  if( rest > 0 )
+    {
+    const int rd = readblock( infd, inBuf + *inSize, rest );
+    if( rd < rest && errno )
+      { show_error( "Read error", errno, false ); return false; }
+    *inSize += rd;
+    }
+  return true;
+  }
+
+
+/* 5 bytes of LZMA properties and 8 bytes of uncompressed size */
+enum { lzma_header_size = LZMA_PROPS_SIZE + 8 };
+
+static int lzma_decode( uint64_t unpackSize, CLzmaDec *decoder, const int infd,
+                        uint8_t inBuf[], int * const inPos,
+                        int * const inSize, const unsigned dictionary_size,
+                        const bool testing )
+  {
+  unsigned long long member_size = lzma_header_size, data_size = 0;
+  uint8_t outBuf[OUT_BUF_SIZE];
+  int outPos = 0;
+  const bool thereIsSize = (unpackSize != (uint64_t)-1);
+
+  for (;;)
+    {
+    uint32_t inProcessed;
+    uint32_t outProcessed = OUT_BUF_SIZE - outPos;
+    ELzmaFinishMode finishMode = LZMA_FINISH_ANY;
+    ELzmaStatus status;
+
+    if( *inPos >= *inSize && !read_inbuf( infd, inBuf, inPos, inSize ) )
+      return 1;
+    inProcessed = *inSize - *inPos;
+    if (thereIsSize && outProcessed > unpackSize)
+      {
+      outProcessed = unpackSize;
+      finishMode = LZMA_FINISH_END;
+      }
+
+    if( !LzmaDec_DecodeToBuf( decoder, outBuf + outPos, &outProcessed,
+        inBuf + *inPos, &inProcessed, finishMode, &status ) )
+      { show_error( "Data error.", 0, false ); return 2; }
+    *inPos += inProcessed;
+    member_size += inProcessed;
+    outPos += outProcessed;
+    unpackSize -= outProcessed;
+
+    if( outfd >= 0 && writeblock( outfd, outBuf, outPos ) != outPos )
+      { show_error( "Can't write output file", errno, false ); return 1; }
+
+    data_size += outPos;
+    outPos = 0;
+
+    if( ( inProcessed == 0 && outProcessed == 0 ) ||
+        ( thereIsSize && unpackSize == 0 ) )
+      {
+      if( ( thereIsSize && unpackSize != 0 ) ||
+          ( !thereIsSize && status != LZMA_STATUS_FINISHED_WITH_MARK ) )
+        { show_error( "Data error.", 0, false ); return 2; }
+      show_results( data_size, member_size, 0, dictionary_size, false );
+      if( verbosity >= 1 )
+        fputs( testing ? "(apparently) ok\n" : "(apparently) done\n", stderr );
+      return 0;
+      }
+    }
+  }
+
+
+static int lzip_decode( CLzmaDec *decoder, const int infd,
+                        struct Pretty_print * const pp, uint8_t inBuf[],
+                        int * const inPos, int * const inSize,
+                        const unsigned dictionary_size )
+  {
+  unsigned long long member_size = Lh_size, data_size = 0;
+  uint8_t outBuf[OUT_BUF_SIZE];
+  int outPos = 0;
+  uint32_t crc = 0xFFFFFFFFU;
+
+  for (;;)
+    {
+    uint32_t inProcessed;
+    uint32_t outProcessed = OUT_BUF_SIZE - outPos;
+    ELzmaFinishMode finishMode = LZMA_FINISH_ANY;
+    ELzmaStatus status;
+
+    if( *inPos >= *inSize && !read_inbuf( infd, inBuf, inPos, inSize ) )
+      return 1;
+    if( *inPos >= *inSize )
+      { Pp_show_msg( pp, "Unexpected EOF." ); return 2; }
+    inProcessed = *inSize - *inPos;
+
+    if( !LzmaDec_DecodeToBuf( decoder, outBuf + outPos, &outProcessed,
+        inBuf + *inPos, &inProcessed, finishMode, &status ) )
+      { Pp_show_msg( pp, "Data error." ); return 2; }
+    *inPos += inProcessed;
+    member_size += inProcessed;
+    outPos += outProcessed;
+
+    if( outfd >= 0 && writeblock( outfd, outBuf, outPos ) != outPos )
+      { show_error( "Can't write output file", errno, false ); return 1; }
+
+    CRC32_update_buf( &crc, outBuf, outPos );
+    data_size += outPos;
+    outPos = 0;
+
+    if (inProcessed == 0 && outProcessed == 0)
+      {
+      Lzip_trailer trailer;
+      int i;
+      unsigned td_crc;
+      unsigned long long td_size, tm_size;
+      bool error = false;
+
+      if( status != LZMA_STATUS_FINISHED_WITH_MARK )
+        { Pp_show_msg( pp, "Data error." ); return 2; }
+      if( *inSize - *inPos < Lt_size &&
+          !read_inbuf( infd, inBuf, inPos, inSize ) ) return 1;
+      if( *inSize - *inPos < Lt_size )
+        {
+        error = true;
+        if( verbosity >= 0 )
+          {
+          Pp_show_msg( pp, 0 );
+          fprintf( stderr, "Trailer truncated at trailer position %d;"
+                           " some checks may fail.\n", *inSize - *inPos );
+          }
+        }
+      for( i = 0; i < Lt_size && *inPos < *inSize; ++i )
+        trailer[i] = inBuf[(*inPos)++];
+      member_size += i;
+      while( i < Lt_size ) trailer[i++] = 0;
+      crc ^= 0xFFFFFFFFU;
+      td_crc = Lt_get_data_crc( trailer );
+      if( td_crc != crc )
+        {
+        error = true;
+        if( verbosity >= 0 )
+          {
+          Pp_show_msg( pp, 0 );
+          fprintf( stderr, "CRC mismatch; stored %08X, computed %08X\n",
+                   td_crc, crc );
+          }
+        }
+      td_size = Lt_get_data_size( trailer );
+      if( td_size != data_size )
+        {
+        error = true;
+        if( verbosity >= 0 )
+          {
+          Pp_show_msg( pp, 0 );
+          fprintf( stderr, "Data size mismatch; stored %llu (0x%llX), computed %llu (0x%llX)\n",
+                   td_size, td_size, data_size, data_size );
+          }
+        }
+      tm_size = Lt_get_member_size( trailer );
+      if( tm_size != member_size )
+        {
+        error = true;
+        if( verbosity >= 0 )
+          {
+          Pp_show_msg( pp, 0 );
+          fprintf( stderr, "Member size mismatch; stored %llu (0x%llX), computed %llu (0x%llX)\n",
+                   tm_size, tm_size, member_size, member_size );
+          }
+        }
+      if( error ) return 2;
+      show_results( data_size, member_size, td_crc, dictionary_size, true );
+      return 0;
+      }
+    }
+  }
+
+
+static int decompress( const int infd, struct Pretty_print * const pp,
+                       const bool ignore_trailing, const bool loose_trailing,
+                       const bool testing )
+  {
+  uint64_t unpackSize = 0;
+  CLzmaDec decoder;
+  uint8_t inBuf[IN_BUF_SIZE];
+  int inPos = 0, inSize = 0;
+  int retval = 0;
+  bool lzip_mode = true;
+  bool first_member;
+  uint8_t raw_props[lzma_header_size];
+
+  for( first_member = true; ; first_member = false )
+    {
+    int i;
+    unsigned dictionary_size = 0;		/* keep gcc 3.3.6 quiet */
+    Lzip_header header;
+    if( inSize - inPos < lzma_header_size &&
+        !read_inbuf( infd, inBuf, &inPos, &inSize ) ) return 1;
+    const int size = inSize - inPos;
+    for( i = 0; i < size && i < Lh_size; ++i )
+      raw_props[i] = header[i] = inBuf[inPos++];
+    if( size <= Lh_size )			/* End Of File */
+      {
+      if( first_member )
+        { show_file_error( pp->name, "File ends unexpectedly at member header.", 0 );
+          retval = 2; }
+      else if( Lh_check_prefix( header, size ) )
+        { Pp_show_msg( pp, "Truncated header in multimember file." );
+          retval = 2; }
+      else if( size > 0 && !ignore_trailing )
+        { Pp_show_msg( pp, trailing_msg ); retval = 2; }
+      break;
+      }
+    if( !Lh_check_magic( header ) )
+      {
+      if( !first_member )
+        {
+        if( !loose_trailing && Lh_check_corrupt( header ) )
+          { Pp_show_msg( pp, "Corrupt header in multimember file." );
+            retval = 2; }
+        else if( !ignore_trailing )
+          { Pp_show_msg( pp, trailing_msg ); retval = 2; }
+        break;
+        }
+      if( inSize - inPos >= lzma_header_size - Lh_size )  /* try lzma-alone */
+        {
+        for( i = Lh_size; i < lzma_header_size; ++i )
+          raw_props[i] = inBuf[inPos++];
+        if( ( raw_props[12] == 0 || raw_props[12] == 0xFF ) &&
+            raw_props[12] == raw_props[11] && raw_props[0] < (9 * 5 * 5) )
+          {
+          lzip_mode = false;
+          dictionary_size = 0;
+          for( i = 4; i >= 1; --i )
+            { dictionary_size <<= 8; dictionary_size += raw_props[i]; }
+          for( i = 7; i >= 0; --i )
+            { unpackSize <<= 8; unpackSize += raw_props[LZMA_PROPS_SIZE+i]; }
+          }
+        }
+      if( lzip_mode )
+        {
+        show_file_error( pp->name,
+                         "Bad magic number (file not in lzip format).", 0 );
+        retval = 2; break;
+        }
+      }
+    if( lzip_mode )
+      {
+      if( !Lh_check_version( header ) )
+        {
+        if( verbosity >= 0 )
+          { Pp_show_msg( pp, 0 );
+            fprintf( stderr, "Version %d member format not supported.\n",
+                     Lh_version( header ) ); }
+        retval = 2; break;
+        }
+      dictionary_size = Lh_get_dictionary_size( header );
+      if( !isvalid_ds( dictionary_size ) )
+        { Pp_show_msg( pp, "Invalid dictionary size in member header." );
+          retval = 2; break; }
+
+      raw_props[0] = 93;		/* (45 * 2) + (9 * 0) + 3 */
+      int ds = dictionary_size;
+      for( i = 1; i <= 4; ++i ) { raw_props[i] = ds & 0xFF; ds >>= 8; }
+      }
+
+    if( verbosity >= 2 || ( verbosity == 1 && first_member ) )
+      Pp_show_msg( pp, 0 );
+
+    if( !LzmaDec_Init( &decoder, raw_props ) )
+      { Pp_show_msg( pp, mem_msg ); return 1; }
+    if( lzip_mode )
+      retval = lzip_decode( &decoder, infd, pp, inBuf, &inPos, &inSize,
+                            dictionary_size );
+    else
+      retval = lzma_decode( unpackSize, &decoder, infd, inBuf, &inPos,
+                            &inSize, dictionary_size, testing );
+    LzmaDec_Free(&decoder);
+    if( retval != 0 || !lzip_mode ) break;
+    if( verbosity >= 2 )
+      { fputs( testing ? "ok\n" : "done\n", stderr ); Pp_reset( pp ); }
+    }
+  if( lzip_mode && verbosity == 1 && retval == 0 )
+    fputs( testing ? "ok\n" : "done\n", stderr );
+  return retval;
+  }
+
+
+CRC32 crc32;
+
+
+/* Return the number of bytes really read.
+   If (value returned < size) and (errno == 0), means EOF was reached.
+*/
+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;
+  }
+
+
+/* Return the number of bytes really written.
+   If (value returned < size), it is always an error.
+*/
+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 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 0..9 compression levels to the
+     corresponding LZMA compression parameters. */
+  const struct Lzma_options option_mapping[] =
+    {
+    { 1 << 16,   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" */
+  const char * default_output_filename = "";
+  enum Mode program_mode = m_compress;
+  int i;
+  bool force = false;
+  bool ignore_trailing = true;
+  bool keep_input_files = false;
+  bool loose_trailing = false;
+  bool recompress = false;
+  bool to_stdout = false;
+  if( argc > 0 ) invocation_name = argv[0];
+
+  enum { opt_lt = 256 };
+  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_lt, "loose-trailing", ap_no  },
+    {  0, 0,                    ap_no  } };
+
+  CRC32_init();
+
+  /* static because valgrind complains and memory management in C sucks */
+  static struct Arg_parser parser;
+  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; }
+
+  int argind = 0;
+  for( ; argind < ap_arguments( &parser ); ++argind )
+    {
+    const int code = ap_code( &parser, argind );
+    if( !code ) break;					/* no more options */
+    const char * const pn = ap_parsed_name( &parser, argind );
+    const char * const arg = ap_argument( &parser, argind );
+    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': 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, pn, min_match_len_limit, max_match_len ); 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, pn );
+                break;
+      case 'S': 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_lt: loose_trailing = true; break;
+      default: internal_error( "uncaught option." );
+      }
+    } /* end process options */
+
+#if defined __MSVCRT__ || defined __OS2__ || defined __DJGPP__
+  setmode( STDIN_FILENO, O_BINARY );
+  setmode( STDOUT_FILENO, O_BINARY );
+#endif
+
+  static const char ** filenames = 0;
+  int num_filenames = max( 1, ap_arguments( &parser ) - argind );
+  filenames = resize_buffer( filenames, num_filenames * sizeof filenames[0] );
+  filenames[0] = "-";
+
+  bool filenames_given = false;
+  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_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 );
+
+  static struct Pretty_print pp;
+  Pp_init( &pp, filenames, num_filenames );
+
+  int failed_tests = 0;
+  int retval = 0;
+  const bool one_to_one = !to_stdout && program_mode != m_test && !to_file;
+  bool stdin_used = false;
+  struct stat in_stats;
+  for( i = 0; i < num_filenames; ++i )
+    {
+    const char * input_filename = "";
+    int infd;
+
+    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 checking infd */
+        {
+        if( program_mode == m_compress )
+          set_c_outname( input_filename, true, true );
+        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 checking infd */
+      {
+      if( program_mode == m_compress ) set_c_outname( default_output_filename,
+                                       filenames_given, false );
+      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 */
+      }
+
+    const struct stat * const in_statsp =
+      ( input_filename[0] && one_to_one ) ? &in_stats : 0;
+    int tmp;
+    if( program_mode == m_compress )
+      tmp = compress( infd, &encoder_options, &pp );
+    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 )
+      remove( input_filename );
+    }
+  if( delete_output_on_interrupt )					/* -o */
+    close_and_set_permissions( ( retval == 0 && !stdin_used &&
+      filenames_given && num_filenames == 1 ) ? &in_stats : 0 );
+  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;
+  }