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-rw-r--r--main.c477
1 files changed, 303 insertions, 174 deletions
diff --git a/main.c b/main.c
index 06725d4..b5e35df 100644
--- a/main.c
+++ b/main.c
@@ -15,7 +15,6 @@
#include <errno.h>
#include <limits.h>
#include <signal.h>
-#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
@@ -32,6 +31,18 @@
#error "Environments where CHAR_BIT != 8 are not supported."
#endif
+#ifndef LLONG_MAX
+#define LLONG_MAX 0x7FFFFFFFFFFFFFFFLL
+#endif
+#ifndef LLONG_MIN
+#define LLONG_MIN (-LLONG_MAX - 1LL)
+#endif
+#ifndef ULLONG_MAX
+#define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL
+#endif
+
+long long int llabs( long long int number );
+
static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); }
static void SzFree(void *p, void *address) { p = p; MyFree(address); }
@@ -44,21 +55,22 @@ const char * const program_year = "2010";
struct { const char * from; const char * to; } const known_extensions[] = {
- { ".lz", "" },
- { ".tlz", ".tar" },
- { 0, 0 } };
+ { ".lz", "" },
+ { ".tlz", ".tar" },
+ { ".lzma", "" },
+ { 0, 0 } };
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 };
char * output_filename = 0;
-// 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 );
@@ -69,16 +81,17 @@ 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 - A \"public domain\" version of the lzip data compressor\n", Program_name );
+ printf( "able to decompress legacy lzma-alone (.lzma) files.\n" );
printf( "\nUsage: %s [options] [file]\n", invocation_name );
printf( "\nOptions:\n" );
printf( " -h, --help display this help and exit\n" );
printf( " -V, --version output version information and exit\n" );
printf( " -c, --stdout send output to standard output\n" );
printf( " -d, --decompress decompress\n" );
-// printf( " -f, --force overwrite existing output files\n" );
-// printf( " -k, --keep keep (don't delete) input files\n" );
- printf( " -m, --match-length=<n> set match length limit in bytes [80]\n" );
+/* printf( " -f, --force overwrite existing output files\n" ); */
+/* printf( " -k, --keep keep (don't delete) input files\n" ); */
+ printf( " -m, --match-length=<n> set match length limit in bytes [36]\n" );
printf( " -q, --quiet suppress all messages\n" );
printf( " -s, --dictionary-size=<n> set dictionary size limit in bytes [8MiB]\n" );
printf( " -t, --test test compressed file integrity\n" );
@@ -91,7 +104,7 @@ static void show_help()
printf( "Numbers may be followed by a multiplier: k = kB = 10^3 = 1000,\n" );
printf( "Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc...\n" );
printf( "\nReport bugs to lzip-bug@nongnu.org\n" );
-// printf( "Pdlzip home page: http://www.nongnu.org/lzip/pdlzip.html\n" );
+/* printf( "Pdlzip home page: http://www.nongnu.org/lzip/pdlzip.html\n" ); */
}
@@ -105,22 +118,51 @@ static void show_version()
}
+static const char * format_num( long long num, long long limit,
+ const int set_prefix )
+ {
+ const char * const si_prefix[8] =
+ { "k", "M", "G", "T", "P", "E", "Z", "Y" };
+ const char * const binary_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;
+ const char *p = "";
+ int i;
+ limit = max( 999LL, min( 999999LL, limit ) );
+
+ for( i = 0; i < 8 && ( llabs( num ) > limit ||
+ ( llabs( num ) >= factor && num % factor == 0 ) ); ++i )
+ { num /= factor; p = prefix[i]; }
+ snprintf( buf, sizeof buf, "%lld %s", num, p );
+ }
+ return buf;
+ }
+
+
static long long getnum( const char * const ptr, const int bs,
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 );
}
if( !errno && tail[0] )
{
int factor = ( tail[1] == 'i' ) ? 1024 : 1000;
- int exponent = 0;
+ int exponent = 0, i;
bool bad_multiplier = false;
switch( tail[0] )
{
@@ -143,10 +185,10 @@ 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; }
@@ -155,7 +197,7 @@ 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;
@@ -186,6 +228,7 @@ static void show_name( const char * const name )
static bool read_inbuf( ISeqInStream * const inStream, Byte inBuf[],
size_t * const inPos, size_t * const inSize )
{
+ size_t rest;
if( *inPos >= *inSize ) *inSize = 0;
else if( *inPos > 0 )
{
@@ -193,16 +236,80 @@ static bool read_inbuf( ISeqInStream * const inStream, Byte inBuf[],
*inSize -= *inPos;
}
*inPos = 0;
- size_t rest = IN_BUF_SIZE - *inSize;
+ rest = IN_BUF_SIZE - *inSize;
if( rest > 0 )
{
if( inStream->Read( inStream, inBuf + *inSize, &rest ) != 0 )
- { show_error( "read error", errno, false ); return false; }
+ { show_error( "Read error", errno, false ); return false; }
*inSize += rest;
}
return true;
}
+
+static int lzma_Decode2( UInt64 unpackSize, CLzmaDec *state,
+ ISeqOutStream *outStream, ISeqInStream *inStream,
+ Byte inBuf[], size_t * const inPos,
+ size_t * const inSize, const bool testing )
+ {
+ long long total_in = 13, total_out = 0;
+ Byte outBuf[OUT_BUF_SIZE];
+ size_t outPos = 0;
+ const bool thereIsSize = (unpackSize != (UInt64)(Int64)-1);
+ LzmaDec_Init(state);
+
+ for (;;)
+ {
+ SizeT inProcessed;
+ SizeT outProcessed = OUT_BUF_SIZE - outPos;
+ ELzmaFinishMode finishMode = LZMA_FINISH_ANY;
+ ELzmaStatus status;
+
+ if( *inPos == *inSize && !read_inbuf( inStream, inBuf, inPos, inSize ) )
+ return 1;
+ inProcessed = *inSize - *inPos;
+ if (thereIsSize && outProcessed > unpackSize)
+ {
+ outProcessed = (SizeT)unpackSize;
+ finishMode = LZMA_FINISH_END;
+ }
+
+ if( LzmaDec_DecodeToBuf( state, outBuf + outPos, &outProcessed,
+ inBuf + *inPos, &inProcessed, finishMode, &status ) != 0 )
+ { show_error( "Data error.", 0, false ); return 1; }
+ *inPos += inProcessed;
+ total_in += inProcessed;
+ outPos += outProcessed;
+ unpackSize -= outProcessed;
+
+ if (outStream)
+ if (outStream->Write(outStream, outBuf, outPos) != outPos)
+ { show_error( "Can not write output file", errno, false ); return 1; }
+
+ total_out += 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 1; }
+ if( verbosity >= 2 )
+ fprintf( stderr, "lzma-alone, dictionary size %7sB. ",
+ format_num( state->prop.dicSize, 9999, 0 ) );
+ if( verbosity >= 3 )
+ fprintf( stderr, "uncompressed size %9lld, compressed size %8lld. ",
+ total_out, total_in );
+ if( verbosity >= 1 )
+ { if( testing ) fprintf( stderr, "(apparently) ok\n" );
+ else fprintf( stderr, "(apparently) done\n" ); }
+ return 0;
+ }
+ }
+ }
+
+
static int Decode2( CLzmaDec *state, ISeqOutStream *outStream,
ISeqInStream *inStream, Byte inBuf[], size_t * const inPos,
size_t * const inSize, const int member_version,
@@ -213,166 +320,193 @@ static int Decode2( CLzmaDec *state, ISeqOutStream *outStream,
size_t outPos = 0;
uint32_t crc = 0xFFFFFFFFU;
LzmaDec_Init(state);
+
for (;;)
{
+ SizeT inProcessed;
+ SizeT outProcessed = OUT_BUF_SIZE - outPos;
+ ELzmaFinishMode finishMode = LZMA_FINISH_ANY;
+ ELzmaStatus status;
+
if( *inPos == *inSize && !read_inbuf( inStream, inBuf, inPos, inSize ) )
return 1;
if( *inPos == *inSize )
- { show_error( "unexpected EOF", errno, false ); return 1; }
- else
+ { show_error( "Unexpected EOF.", 0, false ); return 1; }
+ inProcessed = *inSize - *inPos;
+
+ if( LzmaDec_DecodeToBuf( state, outBuf + outPos, &outProcessed,
+ inBuf + *inPos, &inProcessed, finishMode, &status ) != 0 )
+ { show_error( "Data error.", 0, false ); return 1; }
+ *inPos += inProcessed;
+ total_in += inProcessed;
+ outPos += outProcessed;
+
+ if (outStream)
+ if (outStream->Write(outStream, outBuf, outPos) != outPos)
+ { show_error( "Can not write output file", errno, false ); return 1; }
+
+ CRC32_update_buf( &crc, outBuf, outPos );
+ total_out += outPos;
+ outPos = 0;
+
+ if (inProcessed == 0 && outProcessed == 0)
{
- SizeT inProcessed = *inSize - *inPos;
- SizeT outProcessed = OUT_BUF_SIZE - outPos;
- ELzmaFinishMode finishMode = LZMA_FINISH_ANY;
- ELzmaStatus status;
-
- if( LzmaDec_DecodeToBuf( state, outBuf + outPos, &outProcessed,
- inBuf + *inPos, &inProcessed, finishMode, &status ) != 0 )
- { show_error( "data error", 0, false ); return 1; }
- *inPos += inProcessed;
- total_in += inProcessed;
- outPos += outProcessed;
-
- if (outStream)
- if (outStream->Write(outStream, outBuf, outPos) != outPos)
- { show_error( "can not write output file", errno, false ); return 1; }
-
- CRC32_update_buf( &crc, outBuf, outPos );
- total_out += outPos;
- outPos = 0;
-
- if (inProcessed == 0 && outProcessed == 0)
+ File_trailer trailer;
+ size_t i;
+ const size_t trailer_size = Ft_versioned_size( member_version );
+ bool error = false;
+
+ if( status != LZMA_STATUS_FINISHED_WITH_MARK )
+ { show_error( "Data error.", 0, false ); return 1; }
+ if( *inSize - *inPos < trailer_size &&
+ !read_inbuf( inStream, inBuf, inPos, inSize ) ) return 1;
+ if( *inSize - *inPos < trailer_size )
{
- if( status != LZMA_STATUS_FINISHED_WITH_MARK )
- { show_error( "data error", 0, false ); return 1; }
- bool error = false;
- File_trailer trailer;
- const size_t trailer_size = Ft_versioned_size( member_version );
- if( *inSize - *inPos < trailer_size &&
- !read_inbuf( inStream, inBuf, inPos, inSize ) ) return 1;
- if( *inSize - *inPos < trailer_size )
- {
- error = true;
- if( verbosity >= 0 )
- fprintf( stderr, "trailer truncated at trailer position %u;"
- " some checks may fail.\n", (unsigned int)(*inSize - *inPos) );
- for( size_t i = *inSize - *inPos; i < trailer_size; ++i )
- inBuf[*inPos+i] = 0;
- }
- for( size_t i = 0; i < trailer_size; ++i )
- trailer[i] = inBuf[(*inPos)++];
- total_in += trailer_size;
- if( member_version == 0 ) Ft_set_member_size( trailer, total_in );
- if( Ft_get_data_crc( trailer ) != ( crc ^ 0xFFFFFFFFU ) )
- {
- error = true;
- if( verbosity >= 0 )
- fprintf( stderr, "crc mismatch; trailer says %08X, data crc is %08X.\n",
- (unsigned int)Ft_get_data_crc( trailer ),
- (unsigned int)( crc ^ 0xFFFFFFFFU ) );
- }
- if( Ft_get_data_size( trailer ) != total_out )
- {
- error = true;
- if( verbosity >= 0 )
- fprintf( stderr, "data size mismatch; trailer says %lld, data size is %lld.\n",
- Ft_get_data_size( trailer ), total_out );
- }
- if( Ft_get_member_size( trailer ) != total_in )
- {
- error = true;
- if( verbosity >= 0 )
- fprintf( stderr, "member size mismatch; trailer says %lld, member size is %lld.\n",
- Ft_get_member_size( trailer ), total_in );
- }
- if( !error && verbosity >= 3 )
- fprintf( stderr, "data crc %08X, data size %9lld, member size %8lld. ",
+ error = true;
+ if( verbosity >= 0 )
+ fprintf( stderr, "trailer truncated at trailer position %u;"
+ " some checks may fail.\n", (unsigned int)(*inSize - *inPos) );
+ for( i = *inSize - *inPos; i < trailer_size; ++i )
+ inBuf[*inPos+i] = 0;
+ }
+ for( i = 0; i < trailer_size; ++i )
+ trailer[i] = inBuf[(*inPos)++];
+ total_in += trailer_size;
+ if( member_version == 0 ) Ft_set_member_size( trailer, total_in );
+ if( Ft_get_data_crc( trailer ) != ( crc ^ 0xFFFFFFFFU ) )
+ {
+ error = true;
+ if( verbosity >= 0 )
+ fprintf( stderr, "crc mismatch; trailer says %08X, data crc is %08X.\n",
(unsigned int)Ft_get_data_crc( trailer ),
- Ft_get_data_size( trailer ), Ft_get_member_size( trailer ) );
- if( !error && verbosity >= 1 )
- { if( testing ) fprintf( stderr, "ok\n" );
- else fprintf( stderr, "done\n" ); }
- if( error ) return 2;
- return 0;
+ (unsigned int)( crc ^ 0xFFFFFFFFU ) );
+ }
+ if( Ft_get_data_size( trailer ) != total_out )
+ {
+ error = true;
+ if( verbosity >= 0 )
+ fprintf( stderr, "data size mismatch; trailer says %lld, data size is %lld.\n",
+ Ft_get_data_size( trailer ), total_out );
}
+ if( Ft_get_member_size( trailer ) != total_in )
+ {
+ error = true;
+ if( verbosity >= 0 )
+ fprintf( stderr, "member size mismatch; trailer says %lld, member size is %lld.\n",
+ Ft_get_member_size( trailer ), total_in );
+ }
+ if( !error && verbosity >= 3 )
+ fprintf( stderr, "data crc %08X, data size %9lld, member size %8lld. ",
+ (unsigned int)Ft_get_data_crc( trailer ),
+ Ft_get_data_size( trailer ), Ft_get_member_size( trailer ) );
+ if( !error && verbosity >= 1 )
+ { if( testing ) fprintf( stderr, "ok\n" );
+ else fprintf( stderr, "done\n" ); }
+ if( error ) return 2;
+ return 0;
}
}
}
+
static int Decode( ISeqOutStream *outStream, ISeqInStream *inStream,
const char * const name, const bool testing )
{
+ UInt64 unpackSize = 0;
CLzmaDec state;
File_header header;
Byte inBuf[IN_BUF_SIZE];
size_t inPos = 0, inSize = 0;
int retval = 0;
+ bool lzma_mode = false;
+ bool first_member;
+ /* 5 bytes of LZMA properties and 8 bytes of uncompressed size */
+ unsigned char props[LZMA_PROPS_SIZE+8];
- for( bool first_member = true; ; first_member = false )
+ for( first_member = true; ; first_member = false )
{
+ int i;
if( inSize < Fh_size &&
!read_inbuf( inStream, inBuf, &inPos, &inSize ) ) return 1;
- if( inSize < Fh_size ) // End Of File
+ if( inSize < Fh_size ) /* End Of File */
{
if( !first_member ) break;
- show_error( "error reading member header", 0, false ); return 1;
+ show_error( "Error reading member header.", 0, false ); return 1;
}
- for( int i = 0; i < Fh_size; ++i )
- header[i] = inBuf[inPos++];
+ for( i = 0; i < Fh_size; ++i )
+ props[i] = header[i] = inBuf[inPos++];
if( !Fh_verify_magic( header ) )
{
- if( !first_member ) break; // trailing garbage
- show_error( "bad magic number (file not in lzip format)", 0, false );
- return 2;
+ if( !first_member ) break; /* trailing garbage */
+ if( inSize >= 13 - Fh_size ) /* try lzma-alone */
+ {
+ for( i = Fh_size; i < 13; ++i ) props[i] = inBuf[inPos++];
+ for( i = 0; i < 8; ++i )
+ unpackSize += (UInt64)props[LZMA_PROPS_SIZE+i] << (i * 8);
+ if( ( props[12] == 0 || props[12] == 0xFF ) && props[12] == props[11] )
+ lzma_mode = true;
+ }
+ if( !lzma_mode )
+ {
+ show_error( "Bad magic number (file not in lzip format).", 0, false );
+ return 2;
+ }
}
if( !first_member ) show_name( name );
- if( !Fh_verify_version( header ) )
- {
- if( verbosity >= 0 )
- fprintf( stderr, "version %d member format not supported, newer %s needed.\n",
- Fh_version( header ), program_name );
- return 2;
- }
- if( Fh_get_dictionary_size( header ) < min_dictionary_size ||
- Fh_get_dictionary_size( header ) > max_dictionary_size )
+ if( !lzma_mode )
{
- if( verbosity >= 0 )
- fprintf( stderr, "invalid dictionary size in member header.\n" );
- return 2;
- }
+ int ds, i;
+ if( !Fh_verify_version( header ) )
+ {
+ if( verbosity >= 0 )
+ fprintf( stderr, "version %d member format not supported, newer %s needed.\n",
+ Fh_version( header ), program_name );
+ return 2;
+ }
+ if( Fh_get_dictionary_size( header ) < min_dictionary_size ||
+ Fh_get_dictionary_size( header ) > max_dictionary_size )
+ {
+ if( verbosity >= 0 )
+ fprintf( stderr, "invalid dictionary size in member header.\n" );
+ return 2;
+ }
- if( verbosity >= 1 )
- {
if( verbosity >= 2 )
- fprintf( stderr, "version %d, dictionary size %7dB. ",
- Fh_version( header ), Fh_get_dictionary_size( header ) );
- }
+ fprintf( stderr, "version %d, dictionary size %7sB. ",
+ Fh_version( header ),
+ format_num( Fh_get_dictionary_size( header ), 9999, 0 ) );
- /* 5 bytes of LZMA properties */
- unsigned char props[LZMA_PROPS_SIZE];
- props[0] = 93; // (45 * 2) + (9 * 0) + 3
- int ds = Fh_get_dictionary_size( header );
- for( int i = 1; i <= 4; ++i ) { props[i] = ds & 0xFF; ds >>= 8; }
+ props[0] = 93; /* (45 * 2) + (9 * 0) + 3 */
+ ds = Fh_get_dictionary_size( header );
+ for( i = 1; i <= 4; ++i ) { props[i] = ds & 0xFF; ds >>= 8; }
+ }
LzmaDec_Construct(&state);
if( LzmaDec_Allocate( &state, props, LZMA_PROPS_SIZE, &g_Alloc ) != 0 )
- { show_error( "can not allocate memory", 0, false ); return 1; }
- retval = Decode2( &state, outStream, inStream, inBuf, &inPos,
- &inSize, Fh_version( header ), testing );
+ { show_error( "Can not allocate memory.", 0, false ); return 1; }
+ if( !lzma_mode )
+ retval = Decode2( &state, outStream, inStream, inBuf, &inPos,
+ &inSize, Fh_version( header ), testing );
+ else
+ retval = lzma_Decode2( unpackSize, &state, outStream, inStream,
+ inBuf, &inPos, &inSize, testing );
LzmaDec_Free(&state, &g_Alloc);
- if( retval != 0 ) break;
+ if( retval != 0 || lzma_mode ) break;
}
return retval;
}
+
static int Encode( ISeqOutStream *outStream, ISeqInStream *inStream,
const struct Lzma_options * const encoder_options )
{
CLzmaEncProps props;
+ int retval = 0;
+ File_header header;
CLzmaEncHandle enc = LzmaEnc_Create(&g_Alloc);
if(enc == 0)
- { show_error( "can not allocate memory", 0, false ); return 1; }
+ { show_error( "Can not allocate memory.", 0, false ); return 1; }
LzmaEncProps_Init(&props);
props.dictSize = encoder_options->dictionary_size;
@@ -385,8 +519,6 @@ static int Encode( ISeqOutStream *outStream, ISeqInStream *inStream,
props.mc = 16 + ( encoder_options->match_len_limit / 2 );
LzmaEnc_SetProps(enc, &props);
- int retval = 0;
- File_header header;
Fh_set_magic( header );
if( !Fh_set_dictionary_size( header, encoder_options->dictionary_size ) ||
encoder_options->match_len_limit < min_match_len_limit ||
@@ -394,14 +526,15 @@ static int Encode( ISeqOutStream *outStream, ISeqInStream *inStream,
internal_error( "invalid argument to encoder" );
if( outStream->Write( outStream, header, Fh_size ) != Fh_size )
- { show_error( "can not write output file", errno, false ); retval = 1; }
+ { show_error( "Can not write output file", errno, false ); retval = 1; }
else
if( LzmaEnc_Encode(enc, outStream, inStream, NULL, &g_Alloc, &g_Alloc) != 0 )
- { show_error( "data error", 0, false ); retval = 1; }
+ { show_error( "Data error.", 0, false ); retval = 1; }
LzmaEnc_Destroy(enc, &g_Alloc, &g_Alloc);
return retval;
}
+
int verbosity = 0;
@@ -409,13 +542,13 @@ 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 );
}
}
@@ -423,19 +556,15 @@ 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 );
+ fprintf( stderr, "%s: internal error: %s.\n", program_name, msg );
exit( 3 );
}
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 ) &&
@@ -485,29 +614,30 @@ 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 << 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" */
enum Mode program_mode = m_compress;
+ const char * input_filename = "";
+ CFileSeqInStream inStream;
+ CFileOutStream outStream;
+ int argind;
+ int retval;
bool force = false;
bool keep_input_files = false;
bool to_stdout = false;
- invocation_name = argv[0];
- CRC32_init();
- if (sizeof(UInt32) != 4 || sizeof(UInt64) != 8)
- internal_error( "incorrect UInt32 or UInt64" );
const struct ap_Option options[] =
{
@@ -529,7 +659,6 @@ int main( const int argc, const char * const argv[] )
{ 'h', "help", ap_no },
{ 'k', "keep", ap_no },
{ 'm', "match-length", ap_yes },
-// { 'o', "output", ap_yes },
{ 'q', "quiet", ap_no },
{ 's', "dictionary-size", ap_yes },
{ 'S', "volume-size", ap_yes },
@@ -539,17 +668,22 @@ int main( const int argc, const char * const argv[] )
{ 0 , 0, ap_no } };
struct Arg_parser parser;
+
+ invocation_name = argv[0];
+ CRC32_init();
+ if (sizeof(UInt32) != 4 || sizeof(UInt64) != 8)
+ internal_error( "incorrect UInt32 or UInt64" );
+
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 )
+ for( argind = 0; 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':
@@ -575,12 +709,11 @@ int main( const int argc, const char * const argv[] )
}
}
- const char * input_filename = "";
if( ap_arguments( &parser ) > argind &&
strcmp( ap_argument( &parser, argind ), "-" ) )
input_filename = ap_argument( &parser, argind );
if( ap_arguments( &parser ) > argind + 1 )
- { show_error( "too many file names", 0, true ); return 1; }
+ { show_error( "Too many file names.", 0, true ); return 1; }
if( program_mode == m_test ) output_filename = "/dev/null";
else
@@ -593,9 +726,6 @@ int main( const int argc, const char * const argv[] )
}
}
- CFileSeqInStream inStream;
- CFileOutStream outStream;
-
FileSeqInStream_CreateVTable(&inStream);
File_Construct(&inStream.file);
@@ -603,13 +733,12 @@ int main( const int argc, const char * const argv[] )
File_Construct(&outStream.file);
if (InFile_Open(&inStream.file, input_filename) != 0)
- { show_error( "can not open input file", errno, false ); return 1; }
+ { show_error( "Can not open input file", errno, false ); return 1; }
if (OutFile_Open(&outStream.file, output_filename) != 0)
- { show_error( "can not open output file", errno, false ); return 1; }
+ { show_error( "Can not open output file", errno, false ); return 1; }
show_name( input_filename );
- int retval;
if( program_mode == m_compress )
retval = Encode( &outStream.s, &inStream.s, &encoder_options );
else
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 09:24:43 +0000