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-rw-r--r--main.cc186
1 files changed, 94 insertions, 92 deletions
diff --git a/main.cc b/main.cc
index ce21764..afcabfe 100644
--- a/main.cc
+++ b/main.cc
@@ -1,5 +1,5 @@
/* Minilzip - A test program for the lzlib library
- Copyright (C) 2009, 2010 Antonio Diaz Diaz.
+ Copyright (C) 2009, 2010, 2011 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
@@ -63,10 +63,10 @@ int writeblock( const int fd, const uint8_t * const buf, const int size ) throw(
namespace {
+const char * const Program_name = "Minilzip";
+const char * const program_name = "minilzip";
+const char * const program_year = "2011";
const char * invocation_name = 0;
-const char * const Program_name = "Minilzip";
-const char * const program_name = "minilzip";
-const char * const program_year = "2010";
#ifdef O_BINARY
const int o_binary = O_BINARY;
@@ -85,27 +85,26 @@ struct Lzma_options
int match_len_limit; // 5..273
};
-enum Mode { m_compress = 0, m_decompress, m_test };
+enum Mode { m_compress, m_decompress, m_test };
std::string output_filename;
int outfd = -1;
-mode_t outfd_mode = S_IRUSR | S_IWUSR;
int verbosity = 0;
+mode_t outfd_mode = S_IRUSR | S_IWUSR;
bool delete_output_on_interrupt = false;
class Pretty_print
{
const char * const stdin_name;
- const unsigned int stdin_name_len;
unsigned int longest_name;
std::string name_;
mutable bool first_post;
public:
Pretty_print( const std::vector< std::string > & filenames )
- : stdin_name( "(stdin)" ), stdin_name_len( std::strlen( stdin_name ) ),
- longest_name( 0 ), first_post( false )
+ : stdin_name( "(stdin)" ), longest_name( 0 ), first_post( false )
{
+ const unsigned int stdin_name_len = std::strlen( stdin_name );
for( unsigned int i = 0; i < filenames.size(); ++i )
{
const std::string & s = filenames[i];
@@ -140,7 +139,7 @@ void show_help() throw()
std::printf( " -d, --decompress decompress\n" );
std::printf( " -f, --force overwrite existing output files\n" );
std::printf( " -k, --keep keep (don't delete) input files\n" );
- std::printf( " -m, --match-length=<n> set match length limit in bytes [80]\n" );
+ std::printf( " -m, --match-length=<n> set match length limit in bytes [36]\n" );
std::printf( " -o, --output=<file> if reading stdin, place the output into <file>\n" );
std::printf( " -q, --quiet suppress all messages\n" );
std::printf( " -s, --dictionary-size=<n> set dictionary size limit in bytes [8MiB]\n" );
@@ -169,26 +168,18 @@ void show_version() throw()
}
-const char * format_num( long long num, long long limit = 9999,
- const int set_prefix = 0 ) throw()
+const char * format_num( long long num ) throw()
{
- 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 = std::max( 999LL, std::min( 999999LL, limit ) );
- for( int i = 0; i < 8 && ( llabs( num ) > limit ||
+ for( int 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;
}
@@ -202,7 +193,7 @@ long long getnum( const char * const ptr, const int bs = 0,
long long 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 );
std::exit( 1 );
}
@@ -232,7 +223,7 @@ long long getnum( const char * const ptr, const int bs = 0,
}
if( bad_multiplier )
{
- show_error( "bad multiplier in numerical argument", 0, true );
+ show_error( "Bad multiplier in numerical argument.", 0, true );
std::exit( 1 );
}
for( int i = 0; i < exponent; ++i )
@@ -244,7 +235,7 @@ long long getnum( const char * const ptr, const int bs = 0,
if( !errno && ( result < llimit || result > ulimit ) ) errno = ERANGE;
if( errno )
{
- show_error( "numerical argument out of limits" );
+ show_error( "Numerical argument out of limits." );
std::exit( 1 );
}
return result;
@@ -283,7 +274,7 @@ int open_instream( const std::string & name, struct stat * const in_statsp,
if( program_mode == m_compress && !force && eindex >= 0 )
{
if( verbosity >= 0 )
- std::fprintf( stderr, "%s: input file `%s' already has `%s' suffix.\n",
+ std::fprintf( stderr, "%s: Input file `%s' already has `%s' suffix.\n",
program_name, name.c_str(),
known_extensions[eindex].from );
}
@@ -300,14 +291,16 @@ int open_instream( const std::string & 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 )
- std::fprintf( stderr, "%s: input file `%s' is not a regular file%s.\n",
+ std::fprintf( stderr, "%s: Input file `%s' is not a regular file%s.\n",
program_name, name.c_str(),
- to_stdout ? "" : " and `--stdout' was not specified" );
+ ( can_read && !to_stdout ) ?
+ " and `--stdout' was not specified" : "" );
close( infd );
infd = -1;
}
@@ -339,7 +332,7 @@ void set_d_outname( const std::string & name, const int i ) throw()
}
output_filename = name; output_filename += ".out";
if( verbosity >= 0 )
- std::fprintf( stderr, "%s: can't guess original name for `%s' -- using `%s'.\n",
+ std::fprintf( stderr, "%s: Can't guess original name for `%s' -- using `%s'.\n",
program_name, name.c_str(), output_filename.c_str() );
}
@@ -350,18 +343,14 @@ bool open_outstream( const bool force ) throw()
if( force ) flags |= O_TRUNC; else flags |= O_EXCL;
outfd = open( output_filename.c_str(), 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 )
- std::fprintf( stderr, "%s: Output file %s already exists, skipping.\n",
- program_name, output_filename.c_str() );
- else
- std::fprintf( stderr, "%s: Can't create output file `%s': %s.\n",
- program_name, output_filename.c_str(), std::strerror( errno ) );
- }
+ if( errno == EEXIST )
+ std::fprintf( stderr, "%s: Output file `%s' already exists, skipping.\n",
+ program_name, output_filename.c_str() );
+ else
+ std::fprintf( stderr, "%s: Can't create output file `%s': %s.\n",
+ program_name, output_filename.c_str(), std::strerror( errno ) );
}
return ( outfd >= 0 );
}
@@ -369,7 +358,7 @@ bool open_outstream( const bool force ) throw()
bool check_tty( const int infd, const Mode program_mode ) throw()
{
- 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;
@@ -391,7 +380,7 @@ void cleanup_and_fail( const int retval ) throw()
delete_output_on_interrupt = false;
if( verbosity >= 0 )
std::fprintf( stderr, "%s: Deleting output file `%s', if it exists.\n",
- program_name, output_filename.c_str() );
+ program_name, output_filename.c_str() );
if( outfd >= 0 ) { close( outfd ); outfd = -1; }
if( std::remove( output_filename.c_str() ) != 0 )
show_error( "WARNING: deletion of output file (apparently) failed." );
@@ -406,9 +395,10 @@ 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 ||
- ( fchown( outfd, in_statsp->st_uid, in_statsp->st_gid ) != 0 &&
- errno != EPERM ) ) error = true;
+ if( ( fchown( outfd, in_statsp->st_uid, in_statsp->st_gid ) != 0 &&
+ errno != EPERM ) ||
+ fchmod( outfd, in_statsp->st_mode ) != 0 )
+ error = true;
// fchown will in many cases return with EPERM, which can be safely ignored.
}
if( close( outfd ) == 0 ) outfd = -1;
@@ -424,7 +414,7 @@ void close_and_set_permissions( const struct stat * const in_statsp )
}
if( error )
{
- show_error( "I can't change output file attributes." );
+ show_error( "Can't change output file attributes." );
cleanup_and_fail( 1 );
}
}
@@ -461,10 +451,11 @@ int do_compress( LZ_Encoder * const encoder, const long long member_size,
buffer_size );
const int rd = readblock( infd, buffer, size );
if( rd != size && errno )
- { pp(); show_error( "read error", errno ); return 1; }
+ { pp(); show_error( "Read error", errno ); 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;
}
const int out_size = LZ_compress_read( encoder, buffer, buffer_size );
@@ -472,15 +463,15 @@ int do_compress( LZ_Encoder * const encoder, const long long member_size,
{
pp();
if( verbosity >= 0 )
- std::fprintf( stderr, "LZ_compress_read error: %s.\n",
- LZ_strerror( LZ_compress_errno( encoder ) ) );
+ std::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_error( "write error", errno ); return 1; }
+ { pp(); show_error( "Write error", errno ); return 1; }
}
else if( in_size == 0 ) internal_error( "library error (LZ_compress_read)" );
if( LZ_compress_member_finished( encoder ) )
@@ -494,7 +485,7 @@ int do_compress( LZ_Encoder * const encoder, const long long member_size,
{
close_and_set_permissions( in_statsp );
if( !next_filename() )
- { pp(); show_error( "too many volume files" ); return 1; }
+ { pp( "Too many volume files." ); return 1; }
if( !open_outstream( true ) ) return 1;
delete_output_on_interrupt = true;
}
@@ -505,8 +496,8 @@ int do_compress( LZ_Encoder * const encoder, const long long member_size,
{
pp();
if( verbosity >= 0 )
- std::fprintf( stderr, "LZ_compress_restart_member error: %s.\n",
- LZ_strerror( LZ_compress_errno( encoder ) ) );
+ std::fprintf( stderr, "%s: LZ_compress_restart_member error: %s.\n",
+ program_name, LZ_strerror( LZ_compress_errno( encoder ) ) );
return 1;
}
}
@@ -517,7 +508,7 @@ int do_compress( LZ_Encoder * const encoder, const long long member_size,
const long long in_size = LZ_compress_total_in_size( encoder );
const long long out_size = LZ_compress_total_out_size( encoder );
if( in_size <= 0 || out_size <= 0 )
- std::fprintf( stderr, "no data compressed.\n" );
+ std::fprintf( stderr, "No data compressed.\n" );
else
std::fprintf( stderr, "%6.3f:1, %6.3f bits/byte, "
"%5.2f%% saved, %lld in, %lld out.\n",
@@ -543,7 +534,7 @@ int compress( const long long member_size, const long long volume_size,
if( !encoder || LZ_compress_errno( encoder ) != LZ_ok )
{
if( !encoder || LZ_compress_errno( encoder ) == LZ_mem_error )
- pp( "not enough memory. Try a smaller dictionary size" );
+ pp( "Not enough memory. Try a smaller dictionary size" );
else
internal_error( "invalid argument to encoder" );
retval = 1;
@@ -569,7 +560,7 @@ int do_decompress( LZ_Decoder * const decoder, const int infd,
const int max_in_size = in_size;
in_size = readblock( infd, buffer, max_in_size );
if( in_size != max_in_size && errno )
- { pp(); show_error( "read error", errno ); return 1; }
+ { pp(); show_error( "Read error", errno ); 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 );
@@ -585,22 +576,28 @@ int do_decompress( LZ_Decoder * const decoder, const int infd,
{
const int wr = writeblock( outfd, buffer, rd );
if( wr != rd )
- { pp(); show_error( "write error", errno ); return 1; }
+ { pp(); show_error( "Write error", errno ); return 1; }
}
}
else if( rd < 0 ) { out_size = rd; break; }
if( verbosity >= 1 && LZ_decompress_member_finished( decoder ) == 1 )
{
+ const long long data_position = LZ_decompress_data_position( decoder );
+ const long long member_size = LZ_decompress_member_position( decoder );
pp();
if( verbosity >= 2 )
std::fprintf( stderr, "version %d, dictionary size %7sB. ",
LZ_decompress_member_version( decoder ),
format_num( LZ_decompress_dictionary_size( decoder ) ) );
+ if( verbosity >= 4 && data_position > 0 && member_size > 0 )
+ std::fprintf( stderr, "%6.3f:1, %6.3f bits/byte, %5.2f%% saved. ",
+ (double)data_position / member_size,
+ ( 8.0 * member_size ) / data_position,
+ 100.0 * ( 1.0 - ( (double)member_size / data_position ) ) );
if( verbosity >= 3 )
- std::fprintf( stderr, "data crc %08X, data size %9lld, member size %8lld. ",
+ std::fprintf( stderr, "data CRC %08X, data size %9lld, member size %8lld. ",
LZ_decompress_data_crc( decoder ),
- LZ_decompress_data_position( decoder ),
- LZ_decompress_member_position( decoder ) );
+ data_position, member_size );
if( testing ) std::fprintf( stderr, "ok\n" );
else std::fprintf( stderr, "done\n" );
pp.reset();
@@ -614,19 +611,19 @@ int do_decompress( LZ_Decoder * const decoder, const int infd,
{
if( LZ_decompress_total_out_size( decoder ) > 0 )
break; // trailing garbage
- pp( "error reading member header" );
+ pp( "Error reading member header" );
return 1;
}
if( lz_errno == LZ_mem_error )
{
- pp( "not enough memory. Find a machine with more memory" );
+ pp( "Not enough memory. Find a machine with more memory" );
return 1;
}
pp();
if( lz_errno == LZ_unexpected_eof )
{
if( verbosity >= 0 )
- std::fprintf( stderr, "file ends unexpectedly at pos %lld\n",
+ std::fprintf( stderr, "File ends unexpectedly at pos %lld\n",
LZ_decompress_total_in_size( decoder ) );
return 2;
}
@@ -651,7 +648,7 @@ int decompress( const int infd, const Pretty_print & pp,
if( !decoder || LZ_decompress_errno( decoder ) != LZ_ok )
{
- pp( "not enough memory. Find a machine with more memory" );
+ pp( "Not enough memory. Find a machine with more memory" );
retval = 1;
}
else retval = do_decompress( decoder, infd, pp, testing );
@@ -699,22 +696,24 @@ void show_error( const char * const msg, const int errcode, const bool help ) th
{
if( verbosity >= 0 )
{
- if( msg && msg[0] != 0 )
+ if( msg && msg[0] )
{
std::fprintf( stderr, "%s: %s", program_name, msg );
- if( errcode > 0 ) std::fprintf( stderr, ": %s", std::strerror( errcode ) );
+ if( errcode > 0 )
+ std::fprintf( stderr, ": %s", std::strerror( errcode ) );
std::fprintf( stderr, "\n" );
}
- if( help && invocation_name && invocation_name[0] != 0 )
- std::fprintf( stderr, "Try `%s --help' for more information.\n", invocation_name );
+ if( help && invocation_name && invocation_name[0] )
+ std::fprintf( stderr, "Try `%s --help' for more information.\n",
+ invocation_name );
}
}
void internal_error( const char * const msg )
{
- std::string s( "internal error: " ); s += msg;
- show_error( s.c_str() );
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: internal error: %s.\n", program_name, msg );
std::exit( 3 );
}
@@ -762,15 +761,15 @@ int main( const int argc, const char * const argv[] )
// to the corresponding LZMA compression modes.
const 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 << 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
Lzma_options encoder_options = option_mapping[6]; // default = "-6"
long long member_size = LLONG_MAX;
@@ -793,8 +792,8 @@ int main( const int argc, const char * const argv[] )
const Arg_parser::Option options[] =
{
- { '0', 0, Arg_parser::no },
- { '1', "fast", Arg_parser::no },
+ { '0', "fast", Arg_parser::no },
+ { '1', 0, Arg_parser::no },
{ '2', 0, Arg_parser::no },
{ '3', 0, Arg_parser::no },
{ '4', 0, Arg_parser::no },
@@ -820,7 +819,7 @@ int main( const int argc, const char * const argv[] )
{ 'V', "version", Arg_parser::no },
{ 0 , 0, Arg_parser::no } };
- Arg_parser parser( argc, argv, options );
+ const Arg_parser parser( argc, argv, options );
if( parser.error().size() ) // bad option
{ show_error( parser.error().c_str(), 0, true ); return 1; }
@@ -838,7 +837,7 @@ int main( const int argc, const char * const argv[] )
case 'b': member_size = getnum( arg, 0, 100000, LLONG_MAX / 2 ); break;
case 'c': to_stdout = true; break;
case 'd': program_mode = m_decompress; break;
- case 'e': break;
+ case 'e': break; // ignored by now
case 'f': force = true; break;
case 'h': show_help(); return 0;
case 'k': keep_input_files = true; break;
@@ -855,7 +854,12 @@ int main( const int argc, const char * const argv[] )
case 'V': show_version(); return 0;
default : internal_error( "uncaught option" );
}
- }
+ } // end process options
+
+#if defined(__OS2__)
+ _fsetmode( stdin, "b" );
+ _fsetmode( stdout, "b" );
+#endif
bool filenames_given = false;
for( ; argind < parser.arguments(); ++argind )
@@ -954,9 +958,7 @@ int main( const int argc, const char * const argv[] )
}
if( outfd >= 0 && close( outfd ) != 0 )
{
- if( verbosity >= 0 )
- std::fprintf( stderr, "%s: Can't close stdout: %s.\n",
- program_name, std::strerror( errno ) );
+ show_error( "Can't close stdout", errno );
if( retval < 1 ) retval = 1;
}
return retval;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 02:39:25 +0000