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-rw-r--r--main.c356
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 );