diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 25 |
1 files changed, 13 insertions, 12 deletions
@@ -79,13 +79,11 @@ 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; /* 4 KiB .. 512 MiB */ + int match_len_limit; /* 5 .. 273 */ }; enum Mode { m_compress, m_decompress, m_test }; -const unsigned long long max_member_size = 0x1000000000000000ULL; -const unsigned long long max_volume_size = 0x7FFFFFFFFFFFFFFFULL; char * output_filename = 0; int outfd = -1; @@ -112,7 +110,7 @@ static void show_help( void ) " -m, --match-length=<bytes> set match length limit in bytes [36]\n" " -o, --output=<file> if reading stdin, place the output into <file>\n" " -q, --quiet suppress all messages\n" - " -s, --dictionary-size=<bytes> set dictionary size limit in bytes [8MiB]\n" + " -s, --dictionary-size=<bytes> set dictionary size limit in bytes [8 MiB]\n" " -S, --volume-size=<bytes> set volume size limit in bytes\n" " -t, --test test compressed file integrity\n" " -v, --verbose be verbose (a 2nd -v gives more)\n" @@ -126,7 +124,8 @@ static void show_help( void ) "The bidimensional parameter space of LZMA can't be mapped to a linear\n" "scale optimal for all files. If your files are large, very repetitive,\n" "etc, you may need to use the --match-length and --dictionary-size\n" - "options directly to achieve optimal performance.\n" + "options directly to achieve optimal performance. For example, -9m64\n" + "usually compresses executables more (and faster) than -9.\n" "\nExit status: 0 for a normal exit, 1 for environmental problems (file\n" "not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or\n" "invalid input file, 3 for an internal consistency error (eg, bug) which\n" @@ -146,7 +145,7 @@ static void show_version( void ) } -void show_header( const File_header header ) +static void show_header( const File_header header ) { const char * const prefix[8] = { "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" }; @@ -159,8 +158,6 @@ void show_header( const File_header header ) for( i = 0; i < 8 && ( num > 9999 || ( exact && num >= factor ) ); ++i ) { num /= factor; if( num % factor != 0 ) exact = false; p = prefix[i]; np = ""; } - if( verbosity >= 4 ) - fprintf( stderr, "version %d, ", Fh_version( header ) ); fprintf( stderr, "dictionary size %s%4u %sB. ", np, num, p ); } @@ -273,12 +270,13 @@ static int open_instream( const char * const name, struct stat * const in_statsp 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 ) ) ) + const bool no_ofile = to_stdout || program_mode == m_test; + if( i != 0 || ( !S_ISREG( mode ) && ( !can_read || !no_ofile ) ) ) { if( verbosity >= 0 ) fprintf( stderr, "%s: Input file '%s' is not a regular file%s.\n", program_name, name, - ( can_read && !to_stdout ) ? + ( can_read && !no_ofile ) ? " and '--stdout' was not specified" : "" ); close( infd ); infd = -1; @@ -532,7 +530,8 @@ static int decompress( const int infd, struct Pretty_print * const pp, if( Rd_finished( &rdec ) ) /* End Of File */ { if( first_member ) - { Pp_show_msg( pp, "Error reading member header" ); retval = 1; } + { Pp_show_msg( pp, "File ends unexpectedly at member header" ); + retval = 2; } break; } if( !Fh_verify_magic( header ) ) @@ -695,6 +694,8 @@ int main( const int argc, const char * const argv[] ) { 3 << 23, 132 }, /* -8 */ { 1 << 25, 273 } }; /* -9 */ struct Lzma_options encoder_options = option_mapping[6]; /* default = "-6" */ + const unsigned long long max_member_size = 0x0100000000000000ULL; + const unsigned long long max_volume_size = 0x4000000000000000ULL; unsigned long long member_size = max_member_size; unsigned long long volume_size = 0; const char * input_filename = ""; |