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-rw-r--r--ChangeLog7
-rw-r--r--NEWS4
-rw-r--r--clzip.h35
-rwxr-xr-xconfigure4
-rw-r--r--decoder.c84
-rw-r--r--decoder.h191
-rw-r--r--doc/clzip.12
-rw-r--r--doc/clzip.info14
-rw-r--r--doc/clzip.texinfo14
-rw-r--r--encoder.c73
-rw-r--r--encoder.h33
-rw-r--r--main.c56
-rwxr-xr-xtestsuite/check.sh10
13 files changed, 264 insertions, 263 deletions
diff --git a/ChangeLog b/ChangeLog
index cbbcdbd..a1bb0fd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-03-13 Antonio Diaz Diaz <ant_diaz@teleline.es>
+
+ * Version 1.0-rc3 released.
+ * decoder.h: Input_buffer integrated in Range_decoder.
+
2010-02-21 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.0-rc2 released.
@@ -8,7 +13,7 @@
* Version 1.0-rc1 released.
* Initial release.
- * Translated to C from the C++ source for lzip 1.10-rc1
+ * Translated to C from the C++ source for lzip 1.10-rc1.
Copyright (C) 2010 Antonio Diaz Diaz.
diff --git a/NEWS b/NEWS
index fd8c0ee..1ce6a12 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,4 @@ Changes in version 1.0:
Initial release.
-Translated to C from the C++ source for lzip 1.10-rc1
-
-Compiler warnings produced by over-optimization (-O3) have been fixed.
+Translated to C from the C++ source for lzip 1.10-rc3.
diff --git a/clzip.h b/clzip.h
index c523660..4629000 100644
--- a/clzip.h
+++ b/clzip.h
@@ -137,7 +137,7 @@ static inline void CRC32_init()
{
unsigned int c = n;
for( int k = 0; k < 8; ++k )
- { if( c & 1 ) c = 0xEDB88320 ^ ( c >> 1 ); else c >>= 1; }
+ { if( c & 1 ) c = 0xEDB88320U ^ ( c >> 1 ); else c >>= 1; }
crc32[n] = c;
}
}
@@ -155,6 +155,7 @@ static inline void CRC32_update_buf( uint32_t * crc, const uint8_t * const buffe
typedef uint8_t File_header[6]; // 0-3 magic bytes
// 4 version
// 5 coded_dict_size;
+enum { Fh_size = 6 };
static inline void Fh_set_magic( File_header header )
{
@@ -185,23 +186,23 @@ static inline int Fh_real_bits( const int value )
static inline int Fh_get_dictionary_size( const File_header header )
{
- int size = ( 1 << ( header[5] & 0x1F ) );
- if( size > min_dictionary_size && size <= max_dictionary_size )
- size -= ( size / 16 ) * ( ( header[5] >> 5 ) & 0x07 );
- return size;
+ int sz = ( 1 << ( header[5] & 0x1F ) );
+ if( sz > min_dictionary_size && sz <= max_dictionary_size )
+ sz -= ( sz / 16 ) * ( ( header[5] >> 5 ) & 0x07 );
+ return sz;
}
-static inline bool Fh_set_dictionary_size( File_header header, const int size )
+static inline bool Fh_set_dictionary_size( File_header header, const int sz )
{
- if( size >= min_dictionary_size && size <= max_dictionary_size )
+ if( sz >= min_dictionary_size && sz <= max_dictionary_size )
{
- header[5] = Fh_real_bits( size - 1 );
- if( size > min_dictionary_size )
+ header[5] = Fh_real_bits( sz - 1 );
+ if( sz > min_dictionary_size )
{
const int base_size = 1 << header[5];
const int wedge = base_size / 16;
for( int i = 7; i >= 1; --i )
- if( base_size - ( i * wedge ) >= size )
+ if( base_size - ( i * wedge ) >= sz )
{ header[5] |= ( i << 5 ); break; }
}
return true;
@@ -215,8 +216,10 @@ typedef uint8_t File_trailer[20];
// 4-11 size of the uncompressed data
// 12-19 member size including header and trailer
-static inline int Ft_size( const int version )
- { return sizeof (File_trailer) - ( ( version >= 1 ) ? 0 : 8 ); }
+enum { Ft_size = 20 };
+
+static inline int Ft_versioned_size( const int version )
+ { return ( ( version >= 1 ) ? 20 : 12 ); }
static inline uint32_t Ft_get_data_crc( const File_trailer trailer )
{
@@ -235,9 +238,9 @@ static inline long long Ft_get_data_size( const File_trailer trailer )
return tmp;
}
-static inline void Ft_set_data_size( File_trailer trailer, long long size )
+static inline void Ft_set_data_size( File_trailer trailer, long long sz )
{
- for( int i = 4; i <= 11; ++i ) { trailer[i] = (uint8_t)size; size >>= 8; }
+ for( int i = 4; i <= 11; ++i ) { trailer[i] = (uint8_t)sz; sz >>= 8; }
}
static inline long long Ft_get_member_size( const File_trailer trailer )
@@ -247,9 +250,9 @@ static inline long long Ft_get_member_size( const File_trailer trailer )
return tmp;
}
-static inline void Ft_set_member_size( File_trailer trailer, long long size )
+static inline void Ft_set_member_size( File_trailer trailer, long long sz )
{
- for( int i = 12; i <= 19; ++i ) { trailer[i] = (uint8_t)size; size >>= 8; }
+ for( int i = 12; i <= 19; ++i ) { trailer[i] = (uint8_t)sz; sz >>= 8; }
}
diff --git a/configure b/configure
index 5ebfe51..4a77e1c 100755
--- a/configure
+++ b/configure
@@ -5,12 +5,12 @@
# This configure script is free software: you have unlimited permission
# to copy, distribute and modify it.
#
-# Date of this version: 2010-02-21
+# Date of this version: 2010-03-13
args=
no_create=
pkgname=clzip
-pkgversion=1.0-rc2
+pkgversion=1.0-rc3
progname=clzip
srctrigger=clzip.h
diff --git a/decoder.c b/decoder.c
index 20799a3..0d00219 100644
--- a/decoder.c
+++ b/decoder.c
@@ -28,15 +28,18 @@
#include "decoder.h"
-bool Ib_read_block( struct Input_buffer * const ibuf )
+bool Rd_read_block( struct Range_decoder * const rdec )
{
- if( ibuf->at_stream_end ) return false;
- ibuf->stream_pos = readblock( ibuf->infd_, ibuf->buffer, Ib_buffer_size );
- if( ibuf->stream_pos != Ib_buffer_size && errno )
- { show_error( "read error", errno, false ); cleanup_and_fail( 1 ); }
- ibuf->pos = 0;
- ibuf->at_stream_end = ( ibuf->stream_pos < Ib_buffer_size );
- return !Ib_finished( ibuf );
+ if( !rdec->at_stream_end )
+ {
+ rdec->stream_pos = readblock( rdec->infd_, rdec->buffer, Rd_buffer_size );
+ if( rdec->stream_pos != Rd_buffer_size && errno )
+ { show_error( "read error", errno, false ); cleanup_and_fail( 1 ); }
+ rdec->at_stream_end = ( rdec->stream_pos < Rd_buffer_size );
+ rdec->partial_member_pos += rdec->pos;
+ rdec->pos = 0;
+ }
+ return !Rd_finished( rdec );
}
@@ -59,13 +62,15 @@ void LZd_flush_data( struct LZ_decoder * const decoder )
bool LZd_verify_trailer( struct LZ_decoder * const decoder,
struct Pretty_print * const pp )
{
- bool error = false;
File_trailer trailer;
- const int trailer_size = Ft_size( decoder->format_version );
+ const int trailer_size = Ft_versioned_size( decoder->format_version );
+ const long long member_size = LZd_member_position( decoder ) + trailer_size;
+ bool error = false;
+
for( int i = 0; i < trailer_size && !error; ++i )
{
- if( !Rd_finished( &decoder->range_decoder ) )
- trailer[i] = Rd_get_byte( &decoder->range_decoder );
+ if( !Rd_finished( decoder->range_decoder ) )
+ trailer[i] = Rd_get_byte( decoder->range_decoder );
else
{
error = true;
@@ -73,13 +78,13 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
{
Pp_show_msg( pp, 0 );
fprintf( stderr, "trailer truncated at trailer position %d;"
- " some checks may fail.\n", i );
+ " some checks may fail.\n", i );
}
+ for( ; i < trailer_size; ++i ) trailer[i] = 0;
}
}
- if( decoder->format_version == 0 )
- Ft_set_member_size( trailer, LZd_member_position( decoder ) );
- if( !Rd_code_is_zero( &decoder->range_decoder ) )
+ if( decoder->format_version == 0 ) Ft_set_member_size( trailer, member_size );
+ if( !Rd_code_is_zero( decoder->range_decoder ) )
{
error = true;
if( verbosity >= 0 )
@@ -105,18 +110,18 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
if( verbosity >= 0 )
{
Pp_show_msg( pp, 0 );
- fprintf( stderr, "data size mismatch; trailer says %lld, data size is %lld.\n",
- Ft_get_data_size( trailer ), LZd_data_position( decoder ) );
+ fprintf( stderr, "data size mismatch; trailer says %lld, data size is %lld (0x%llX).\n",
+ Ft_get_data_size( trailer ), LZd_data_position( decoder ), LZd_data_position( decoder ) );
}
}
- if( Ft_get_member_size( trailer ) != LZd_member_position( decoder ) )
+ if( Ft_get_member_size( trailer ) != member_size )
{
error = true;
if( verbosity >= 0 )
{
Pp_show_msg( pp, 0 );
- fprintf( stderr, "member size mismatch; trailer says %lld, member size is %lld.\n",
- Ft_get_member_size( trailer ), LZd_member_position( decoder ) );
+ fprintf( stderr, "member size mismatch; trailer says %lld, member size is %lld (0x%llX).\n",
+ Ft_get_member_size( trailer ), member_size, member_size );
}
}
if( !error && verbosity >= 3 )
@@ -137,41 +142,42 @@ int LZd_decode_member( struct LZ_decoder * const decoder,
unsigned int rep2 = 0; // repeated distances
unsigned int rep3 = 0;
State state = 0;
+ Rd_load( decoder->range_decoder );
while( true )
{
- if( Rd_finished( &decoder->range_decoder ) )
+ if( Rd_finished( decoder->range_decoder ) )
{ LZd_flush_data( decoder ); return 2; }
const int pos_state = LZd_data_position( decoder ) & pos_state_mask;
- if( Rd_decode_bit( &decoder->range_decoder, &decoder->bm_match[state][pos_state] ) == 0 )
+ if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_match[state][pos_state] ) == 0 )
{
const uint8_t prev_byte = LZd_get_byte( decoder, 0 );
if( St_is_char( state ) )
- LZd_put_byte( decoder, Lid_decode( &decoder->literal_decoder, &decoder->range_decoder, prev_byte ) );
+ LZd_put_byte( decoder, Lid_decode( &decoder->literal_decoder, decoder->range_decoder, prev_byte ) );
else
- LZd_put_byte( decoder, Lid_decode_matched( &decoder->literal_decoder, &decoder->range_decoder, prev_byte,
+ LZd_put_byte( decoder, Lid_decode_matched( &decoder->literal_decoder, decoder->range_decoder, prev_byte,
LZd_get_byte( decoder, rep0 ) ) );
St_set_char( &state );
}
else
{
int len;
- if( Rd_decode_bit( &decoder->range_decoder, &decoder->bm_rep[state] ) == 1 )
+ if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep[state] ) == 1 )
{
len = 0;
- if( Rd_decode_bit( &decoder->range_decoder, &decoder->bm_rep0[state] ) == 0 )
+ if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep0[state] ) == 0 )
{
- if( Rd_decode_bit( &decoder->range_decoder, &decoder->bm_len[state][pos_state] ) == 0 )
+ if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_len[state][pos_state] ) == 0 )
{ len = 1; St_set_short_rep( &state ); }
}
else
{
unsigned int distance;
- if( Rd_decode_bit( &decoder->range_decoder, &decoder->bm_rep1[state] ) == 0 )
+ if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep1[state] ) == 0 )
distance = rep1;
else
{
- if( Rd_decode_bit( &decoder->range_decoder, &decoder->bm_rep2[state] ) == 0 )
+ if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep2[state] ) == 0 )
distance = rep2;
else { distance = rep3; rep3 = rep2; }
rep2 = rep1;
@@ -181,30 +187,30 @@ int LZd_decode_member( struct LZ_decoder * const decoder,
}
if( len == 0 )
{
- len = min_match_len + Led_decode( &decoder->rep_match_len_decoder, &decoder->range_decoder, pos_state );
+ len = min_match_len + Led_decode( &decoder->rep_match_len_decoder, decoder->range_decoder, pos_state );
St_set_rep( &state );
}
}
else
{
unsigned int rep0_saved = rep0;
- len = min_match_len + Led_decode( &decoder->len_decoder, &decoder->range_decoder, pos_state );
- const int dis_slot = Rd_decode_tree( &decoder->range_decoder, decoder->bm_dis_slot[get_dis_state(len)], dis_slot_bits );
+ len = min_match_len + Led_decode( &decoder->len_decoder, decoder->range_decoder, pos_state );
+ const int dis_slot = Rd_decode_tree( decoder->range_decoder, decoder->bm_dis_slot[get_dis_state(len)], dis_slot_bits );
if( dis_slot < start_dis_model ) rep0 = dis_slot;
else
{
const int direct_bits = ( dis_slot >> 1 ) - 1;
rep0 = ( 2 | ( dis_slot & 1 ) ) << direct_bits;
if( dis_slot < end_dis_model )
- rep0 += Rd_decode_tree_reversed( &decoder->range_decoder, decoder->bm_dis + rep0 - dis_slot, direct_bits );
+ rep0 += Rd_decode_tree_reversed( decoder->range_decoder, decoder->bm_dis + rep0 - dis_slot, direct_bits );
else
{
- rep0 += Rd_decode( &decoder->range_decoder, direct_bits - dis_align_bits ) << dis_align_bits;
- rep0 += Rd_decode_tree_reversed( &decoder->range_decoder, decoder->bm_align, dis_align_bits );
- if( rep0 == 0xFFFFFFFF ) // Marker found
+ rep0 += Rd_decode( decoder->range_decoder, direct_bits - dis_align_bits ) << dis_align_bits;
+ rep0 += Rd_decode_tree_reversed( decoder->range_decoder, decoder->bm_align, dis_align_bits );
+ if( rep0 == 0xFFFFFFFFU ) // Marker found
{
rep0 = rep0_saved;
- Rd_normalize( &decoder->range_decoder );
+ Rd_normalize( decoder->range_decoder );
LZd_flush_data( decoder );
if( len == min_match_len ) // End Of Stream marker
{
@@ -212,7 +218,7 @@ int LZd_decode_member( struct LZ_decoder * const decoder,
}
if( len == min_match_len + 1 ) // Sync Flush marker
{
- Rd_reload( &decoder->range_decoder ); continue;
+ Rd_load( decoder->range_decoder ); continue;
}
if( verbosity >= 0 )
{
diff --git a/decoder.h b/decoder.h
index 7df68b9..1bb773c 100644
--- a/decoder.h
+++ b/decoder.h
@@ -15,182 +15,159 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-enum { Ib_buffer_size = 65536 };
+enum { Rd_buffer_size = 16384 };
-struct Input_buffer
+struct Range_decoder
{
- uint8_t * buffer;
+ long long partial_member_pos;
+ uint8_t * buffer; // input buffer
int pos;
int stream_pos; // when reached, a new block must be read
+ uint32_t code;
+ uint32_t range;
int infd_; // input file descriptor
bool at_stream_end;
};
-bool Ib_read_block( struct Input_buffer * const ibuf );
+bool Rd_read_block( struct Range_decoder * const rdec );
-static inline void Ib_init( struct Input_buffer * const ibuf, const int infd )
+static inline void Rd_init( struct Range_decoder * const rdec, const int infd )
{
- ibuf->buffer = (uint8_t *)malloc( Ib_buffer_size );
- if( !ibuf->buffer )
+ rdec->partial_member_pos = 0;
+ rdec->buffer = (uint8_t *)malloc( Rd_buffer_size );
+ if( !rdec->buffer )
{
show_error( "not enough memory. Find a machine with more memory", 0, false );
cleanup_and_fail( 1 );
}
- ibuf->pos = 0;
- ibuf->stream_pos = 0;
- ibuf->infd_ = infd;
- ibuf->at_stream_end = false;
+ rdec->pos = 0;
+ rdec->stream_pos = 0;
+ rdec->code = 0;
+ rdec->range = 0xFFFFFFFF;
+ rdec->infd_ = infd;
+ rdec->at_stream_end = false;
}
-static inline void Ib_free( struct Input_buffer * const ibuf )
- { free( ibuf->buffer ); ibuf->buffer = 0; }
+static inline void Rd_free( struct Range_decoder * const rdec )
+ { free( rdec->buffer ); rdec->buffer = 0; }
-static inline bool Ib_finished( struct Input_buffer * const ibuf )
- { return ibuf->at_stream_end && ibuf->pos >= ibuf->stream_pos; }
+static inline bool Rd_code_is_zero( struct Range_decoder * const rdec )
+ { return ( rdec->code == 0 ); }
-static inline uint8_t Ib_get_byte( struct Input_buffer * const ibuf )
- {
- if( ibuf->pos >= ibuf->stream_pos && !Ib_read_block( ibuf ) )
- return 0;
- return ibuf->buffer[ibuf->pos++];
- }
+static inline bool Rd_finished( struct Range_decoder * const rdec )
+ { return rdec->at_stream_end && rdec->pos >= rdec->stream_pos; }
+static inline long long Rd_member_position( struct Range_decoder * const rdec )
+ { return rdec->partial_member_pos + rdec->pos; }
-struct Range_decoder
- {
- long long member_pos;
- uint32_t code;
- uint32_t range;
- struct Input_buffer * ibuf;
- };
+static inline void Rd_reset_member_position( struct Range_decoder * const rdec )
+ { rdec->partial_member_pos = -rdec->pos; }
-static inline uint8_t Rd_get_byte( struct Range_decoder * const range_decoder )
+static inline uint8_t Rd_get_byte( struct Range_decoder * const rdec )
{
- ++range_decoder->member_pos;
- return Ib_get_byte( range_decoder->ibuf );
+ if( rdec->pos >= rdec->stream_pos && !Rd_read_block( rdec ) ) return 0;
+ return rdec->buffer[rdec->pos++];
}
-static inline void Rd_init( struct Range_decoder * const range_decoder,
- struct Input_buffer * const buf )
+static inline void Rd_load( struct Range_decoder * const rdec )
{
- range_decoder->member_pos = sizeof (File_header);
- range_decoder->code = 0;
- range_decoder->range = 0xFFFFFFFF;
- range_decoder->ibuf = buf;
+ rdec->code = 0;
+ rdec->range = 0xFFFFFFFFU;
for( int i = 0; i < 5; ++i )
- range_decoder->code = (range_decoder->code << 8) |
- Rd_get_byte( range_decoder );
+ rdec->code = (rdec->code << 8) | Rd_get_byte( rdec );
}
-static inline bool Rd_code_is_zero( struct Range_decoder * const range_decoder )
- { return ( range_decoder->code == 0 ); }
-static inline bool Rd_finished( struct Range_decoder * const range_decoder )
- { return Ib_finished( range_decoder->ibuf ); }
-static inline long long Rd_member_position( struct Range_decoder * const range_decoder )
- { return range_decoder->member_pos; }
-
-static inline void Rd_reload( struct Range_decoder * const range_decoder )
+static inline void Rd_normalize( struct Range_decoder * const rdec )
{
- range_decoder->code = 0;
- range_decoder->range = 0xFFFFFFFF;
- for( int i = 0; i < 5; ++i )
- range_decoder->code = (range_decoder->code << 8) |
- Rd_get_byte( range_decoder );
- }
-
-static inline void Rd_normalize( struct Range_decoder * const range_decoder )
- {
- if( range_decoder->range <= 0x00FFFFFF )
+ if( rdec->range <= 0x00FFFFFFU )
{
- range_decoder->range <<= 8;
- range_decoder->code = (range_decoder->code << 8) |
- Rd_get_byte( range_decoder );
+ rdec->range <<= 8;
+ rdec->code = (rdec->code << 8) | Rd_get_byte( rdec );
}
}
-static inline int Rd_decode( struct Range_decoder * const range_decoder,
+static inline int Rd_decode( struct Range_decoder * const rdec,
const int num_bits )
{
int symbol = 0;
for( int i = num_bits; i > 0; --i )
{
symbol <<= 1;
- if( range_decoder->range <= 0x00FFFFFF )
+ if( rdec->range <= 0x00FFFFFFU )
{
- range_decoder->range <<= 7;
- range_decoder->code = (range_decoder->code << 8) |
- Rd_get_byte( range_decoder );
- if( range_decoder->code >= range_decoder->range )
- { range_decoder->code -= range_decoder->range; symbol |= 1; }
+ rdec->range <<= 7;
+ rdec->code = (rdec->code << 8) | Rd_get_byte( rdec );
+ if( rdec->code >= rdec->range )
+ { rdec->code -= rdec->range; symbol |= 1; }
}
else
{
- range_decoder->range >>= 1;
- if( range_decoder->code >= range_decoder->range )
- { range_decoder->code -= range_decoder->range; symbol |= 1; }
+ rdec->range >>= 1;
+ if( rdec->code >= rdec->range )
+ { rdec->code -= rdec->range; symbol |= 1; }
}
}
return symbol;
}
-static inline int Rd_decode_bit( struct Range_decoder * const range_decoder,
+static inline int Rd_decode_bit( struct Range_decoder * const rdec,
Bit_model * const probability )
{
- Rd_normalize( range_decoder );
- const uint32_t bound = ( range_decoder->range >> bit_model_total_bits ) *
+ Rd_normalize( rdec );
+ const uint32_t bound = ( rdec->range >> bit_model_total_bits ) *
*probability;
- if( range_decoder->code < bound )
+ if( rdec->code < bound )
{
- range_decoder->range = bound;
+ rdec->range = bound;
*probability += (bit_model_total - *probability) >> bit_model_move_bits;
return 0;
}
else
{
- range_decoder->range -= bound;
- range_decoder->code -= bound;
+ rdec->range -= bound;
+ rdec->code -= bound;
*probability -= *probability >> bit_model_move_bits;
return 1;
}
}
-static inline int Rd_decode_tree( struct Range_decoder * const range_decoder,
+static inline int Rd_decode_tree( struct Range_decoder * const rdec,
Bit_model bm[], const int num_bits )
{
int model = 1;
for( int i = num_bits; i > 0; --i )
- model = ( model << 1 ) | Rd_decode_bit( range_decoder, &bm[model] );
+ model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
return model - (1 << num_bits);
}
-static inline int Rd_decode_tree_reversed( struct Range_decoder * const range_decoder,
+static inline int Rd_decode_tree_reversed( struct Range_decoder * const rdec,
Bit_model bm[], const int num_bits )
{
int model = 1;
int symbol = 0;
for( int i = 0; i < num_bits; ++i )
{
- const int bit = Rd_decode_bit( range_decoder, &bm[model] );
+ const int bit = Rd_decode_bit( rdec, &bm[model] );
model <<= 1;
if( bit ) { model |= 1; symbol |= (1 << i); }
}
return symbol;
}
-static inline int Rd_decode_matched( struct Range_decoder * const range_decoder,
+static inline int Rd_decode_matched( struct Range_decoder * const rdec,
Bit_model bm[], const int match_byte )
{
- Bit_model *bm1 = bm + 0x100;
+ Bit_model * const bm1 = bm + 0x100;
int symbol = 1;
- for( int i = 1; i <= 8; ++i )
+ for( int i = 7; i >= 0; --i )
{
- const int match_bit = ( match_byte << i ) & 0x100;
- const int bit = Rd_decode_bit( range_decoder, &bm1[match_bit+symbol] );
+ const int match_bit = ( match_byte >> i ) & 1;
+ const int bit = Rd_decode_bit( rdec, &bm1[(match_bit<<8)+symbol] );
symbol = ( symbol << 1 ) | bit;
- if( ( match_bit && !bit ) || ( !match_bit && bit ) )
+ if( match_bit != bit )
{
- while( ++i <= 8 )
- symbol = ( symbol << 1 ) | Rd_decode_bit( range_decoder, &bm[symbol] );
+ while( --i >= 0 )
+ symbol = ( symbol << 1 ) | Rd_decode_bit( rdec, &bm[symbol] );
break;
}
}
@@ -222,18 +199,16 @@ static inline void Led_init( struct Len_decoder * const len_decoder )
}
static inline int Led_decode( struct Len_decoder * const len_decoder,
- struct Range_decoder * const range_decoder,
+ struct Range_decoder * const rdec,
const int pos_state )
{
- if( Rd_decode_bit( range_decoder, &len_decoder->choice1 ) == 0 )
- return Rd_decode_tree( range_decoder, len_decoder->bm_low[pos_state],
- len_low_bits );
- if( Rd_decode_bit( range_decoder, &len_decoder->choice2 ) == 0 )
+ if( Rd_decode_bit( rdec, &len_decoder->choice1 ) == 0 )
+ return Rd_decode_tree( rdec, len_decoder->bm_low[pos_state], len_low_bits );
+ if( Rd_decode_bit( rdec, &len_decoder->choice2 ) == 0 )
return len_low_symbols +
- Rd_decode_tree( range_decoder, len_decoder->bm_mid[pos_state],
- len_mid_bits );
+ Rd_decode_tree( rdec, len_decoder->bm_mid[pos_state], len_mid_bits );
return len_low_symbols + len_mid_symbols +
- Rd_decode_tree( range_decoder, len_decoder->bm_high, len_high_bits );
+ Rd_decode_tree( rdec, len_decoder->bm_high, len_high_bits );
}
@@ -253,15 +228,15 @@ static inline int Lid_state( const int prev_byte )
{ return ( prev_byte >> ( 8 - literal_context_bits ) ); }
static inline uint8_t Lid_decode( struct Literal_decoder * const literal_decoder,
- struct Range_decoder * const range_decoder,
+ struct Range_decoder * const rdec,
const uint8_t prev_byte )
- { return Rd_decode_tree( range_decoder, literal_decoder->bm_literal[Lid_state(prev_byte)], 8 ); }
+ { return Rd_decode_tree( rdec, literal_decoder->bm_literal[Lid_state(prev_byte)], 8 ); }
static inline uint8_t Lid_decode_matched( struct Literal_decoder * const literal_decoder,
- struct Range_decoder * const range_decoder,
+ struct Range_decoder * const rdec,
const uint8_t prev_byte,
const uint8_t match_byte )
- { return Rd_decode_matched( range_decoder, literal_decoder->bm_literal[Lid_state(prev_byte)], match_byte ); }
+ { return Rd_decode_matched( rdec, literal_decoder->bm_literal[Lid_state(prev_byte)], match_byte ); }
struct LZ_decoder
@@ -286,7 +261,7 @@ struct LZ_decoder
Bit_model bm_dis[modeled_distances-end_dis_model];
Bit_model bm_align[dis_align_size];
- struct Range_decoder range_decoder;
+ struct Range_decoder * range_decoder;
struct Len_decoder len_decoder;
struct Len_decoder rep_match_len_decoder;
struct Literal_decoder literal_decoder;
@@ -335,7 +310,7 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
static inline void LZd_init( struct LZ_decoder * const decoder,
const File_header header,
- struct Input_buffer * const ibuf, const int outfd )
+ struct Range_decoder * const rdec, const int outfd )
{
decoder->partial_data_pos = 0;
decoder->format_version = Fh_version( header );
@@ -349,7 +324,7 @@ static inline void LZd_init( struct LZ_decoder * const decoder,
}
decoder->pos = 0;
decoder->stream_pos = 0;
- decoder->crc_ = 0xFFFFFFFF;
+ decoder->crc_ = 0xFFFFFFFFU;
decoder->outfd_ = outfd;
for( int i = 0; i < St_states; ++i )
@@ -372,7 +347,7 @@ static inline void LZd_init( struct LZ_decoder * const decoder,
for( int i = 0; i < dis_align_size; ++i )
Bm_init( &decoder->bm_align[i] );
- Rd_init( &decoder->range_decoder, ibuf );
+ decoder->range_decoder = rdec;
Led_init( &decoder->len_decoder );
Led_init( &decoder->rep_match_len_decoder );
Lid_init( &decoder->literal_decoder );
@@ -383,11 +358,13 @@ static inline void LZd_free( struct LZ_decoder * const decoder )
{ free( decoder->buffer ); decoder->buffer = 0; }
static inline uint32_t LZd_crc( struct LZ_decoder * const decoder )
- { return decoder->crc_ ^ 0xFFFFFFFF; }
+ { return decoder->crc_ ^ 0xFFFFFFFFU; }
+
int LZd_decode_member( struct LZ_decoder * const decoder,
struct Pretty_print * const pp );
static inline long long LZd_member_position( struct LZ_decoder * const decoder )
- { return Rd_member_position( &decoder->range_decoder ); }
+ { return Rd_member_position( decoder->range_decoder ); }
+
static inline long long LZd_data_position( struct LZ_decoder * const decoder )
{ return decoder->partial_data_pos + decoder->pos; }
diff --git a/doc/clzip.1 b/doc/clzip.1
index 71884aa..f259dfa 100644
--- a/doc/clzip.1
+++ b/doc/clzip.1
@@ -1,5 +1,5 @@
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.36.
-.TH CLZIP "1" "February 2010" "Clzip 1.0-rc2" "User Commands"
+.TH CLZIP "1" "March 2010" "Clzip 1.0-rc3" "User Commands"
.SH NAME
Clzip \- data compressor based on the LZMA algorithm
.SH SYNOPSIS
diff --git a/doc/clzip.info b/doc/clzip.info
index d4a51b3..a98e8e5 100644
--- a/doc/clzip.info
+++ b/doc/clzip.info
@@ -12,7 +12,7 @@ File: clzip.info, Node: Top, Next: Introduction, Up: (dir)
Clzip Manual
************
-This manual is for Clzip (version 1.0-rc2, 21 February 2010).
+This manual is for Clzip (version 1.0-rc3, 13 March 2010).
* Menu:
@@ -68,11 +68,11 @@ multivolume compressed tar archives.
The amount of memory required for compression is about 5 MiB plus 1
or 2 times the dictionary size limit (1 if input file size is less than
dictionary size limit, else 2) plus 8 times the dictionary size really
-used. For decompression is a little more than the dictionary size really
-used. Clzip will automatically use the smallest possible dictionary size
-without exceeding the given limit. It is important to appreciate that
-the decompression memory requirement is affected at compression time by
-the choice of dictionary size limit.
+used. For decompression it is a little more than the dictionary size
+really used. Clzip will automatically use the smallest possible
+dictionary size without exceeding the given limit. It is important to
+appreciate that the decompression memory requirement is affected at
+compression time by the choice of dictionary size limit.
When decompressing, clzip attempts to guess the name for the
decompressed file from that of the compressed file as follows:
@@ -432,7 +432,7 @@ Concept Index

Tag Table:
Node: Top226
-Node: Introduction838
+Node: Introduction835
Node: Algorithm4160
Node: Invoking Clzip6391
Node: File Format10747
diff --git a/doc/clzip.texinfo b/doc/clzip.texinfo
index e9e6339..2a2e586 100644
--- a/doc/clzip.texinfo
+++ b/doc/clzip.texinfo
@@ -5,8 +5,8 @@
@finalout
@c %**end of header
-@set UPDATED 21 February 2010
-@set VERSION 1.0-rc2
+@set UPDATED 13 March 2010
+@set VERSION 1.0-rc3
@dircategory Data Compression
@direntry
@@ -84,11 +84,11 @@ compressed tar archives.
The amount of memory required for compression is about 5 MiB plus 1 or 2
times the dictionary size limit (1 if input file size is less than
dictionary size limit, else 2) plus 8 times the dictionary size really
-used. For decompression is a little more than the dictionary size really
-used. Clzip will automatically use the smallest possible dictionary size
-without exceeding the given limit. It is important to appreciate that
-the decompression memory requirement is affected at compression time by
-the choice of dictionary size limit.
+used. For decompression it is a little more than the dictionary size
+really used. Clzip will automatically use the smallest possible
+dictionary size without exceeding the given limit. It is important to
+appreciate that the decompression memory requirement is affected at
+compression time by the choice of dictionary size limit.
When decompressing, clzip attempts to guess the name for the decompressed
file from that of the compressed file as follows:
diff --git a/encoder.c b/encoder.c
index a46893a..bcbdf6a 100644
--- a/encoder.c
+++ b/encoder.c
@@ -50,7 +50,8 @@ void Mf_init( struct Matchfinder * const matchfinder,
matchfinder->stream_pos = 0;
matchfinder->infd_ = infd;
matchfinder->match_len_limit_ = len_limit;
- matchfinder->prev_positions = (int32_t *)malloc( mf_num_prev_positions * sizeof (int32_t) );
+ matchfinder->prev_positions =
+ (int32_t *)malloc( mf_num_prev_positions * sizeof (int32_t) );
if( !matchfinder->prev_positions )
{
show_error( "not enough memory. Try a smaller dictionary size", 0, false );
@@ -71,7 +72,8 @@ void Mf_init( struct Matchfinder * const matchfinder,
if( !matchfinder->at_stream_end && matchfinder->buffer_size < buffer_size_limit )
{
matchfinder->buffer_size = buffer_size_limit;
- matchfinder->buffer = (uint8_t *)realloc( matchfinder->buffer, matchfinder->buffer_size * sizeof (uint8_t) );
+ matchfinder->buffer =
+ (uint8_t *)realloc( matchfinder->buffer, matchfinder->buffer_size );
if( !matchfinder->buffer )
{
show_error( "not enough memory. Try a smaller dictionary size", 0, false );
@@ -85,7 +87,8 @@ void Mf_init( struct Matchfinder * const matchfinder,
else matchfinder->dictionary_size_ = dict_size;
matchfinder->pos_limit = matchfinder->buffer_size;
if( !matchfinder->at_stream_end ) matchfinder->pos_limit -= mf_after_size;
- matchfinder->prev_pos_tree = (int32_t *)malloc( 2 * matchfinder->dictionary_size_ * sizeof (int32_t) );
+ matchfinder->prev_pos_tree =
+ (int32_t *)malloc( 2 * matchfinder->dictionary_size_ * sizeof (int32_t) );
if( !matchfinder->prev_pos_tree )
{
show_error( "not enough memory. Try a smaller dictionary size", 0, false );
@@ -153,10 +156,11 @@ int Mf_longest_match_len( struct Matchfinder * const matchfinder,
const uint8_t * const data = matchfinder->buffer + matchfinder->pos;
const int key2 = mf_num_prev_positions4 + mf_num_prev_positions3 +
( ( (int)data[0] << 8 ) | data[1] );
- const int tmp = crc32[data[0]] ^ data[1] ^ ( (int)data[2] << 8 );
- const int key3 = mf_num_prev_positions4 + ( tmp & ( mf_num_prev_positions3 - 1 ) );
- const int key4 = ( tmp ^ ( crc32[data[3]] << 5 ) ) &
- ( mf_num_prev_positions4 - 1 );
+ const uint32_t tmp = crc32[data[0]] ^ data[1] ^ ( (uint32_t)data[2] << 8 );
+ const int key3 = mf_num_prev_positions4 +
+ (int)( tmp & ( mf_num_prev_positions3 - 1 ) );
+ const int key4 = (int)( ( tmp ^ ( crc32[data[3]] << 5 ) ) &
+ ( mf_num_prev_positions4 - 1 ) );
if( distances )
{
@@ -292,9 +296,11 @@ void LZe_fill_distance_prices( struct LZ_encoder * const encoder )
}
-// Return value: ( dis == -1 ) && ( len == 1 ) means literal
-int LZe_best_pair_sequence( struct LZ_encoder * const encoder, const int reps[num_rep_distances],
- const State state )
+// Return value == number of bytes advanced (ahead).
+// trials[0]..trials[retval-1] contain the steps to encode.
+// ( trials[0].dis == -1 && trials[0].price == 1 ) means literal.
+int LZe_sequence_optimizer( struct LZ_encoder * const encoder,
+ const int reps[num_rep_distances], const State state )
{
int main_len;
if( encoder->longest_match_found > 0 ) // from previous call
@@ -328,15 +334,14 @@ int LZe_best_pair_sequence( struct LZ_encoder * const encoder, const int reps[nu
return main_len;
}
- encoder->trials[0].state = state;
- for( int i = 0; i < num_rep_distances; ++i ) encoder->trials[0].reps[i] = reps[i];
-
+ {
+ const int pos_state = Mf_data_position( encoder->matchfinder ) & pos_state_mask;
const uint8_t prev_byte = Mf_peek( encoder->matchfinder, -1 );
const uint8_t cur_byte = Mf_peek( encoder->matchfinder, 0 );
const uint8_t match_byte = Mf_peek( encoder->matchfinder, -reps[0]-1 );
- unsigned int position = Mf_data_position( encoder->matchfinder );
- const int pos_state = position & pos_state_mask;
+ encoder->trials[0].state = state;
+ for( int i = 0; i < num_rep_distances; ++i ) encoder->trials[0].reps[i] = reps[i];
encoder->trials[1].dis = -1;
encoder->trials[1].prev_index = 0;
encoder->trials[1].price = price0( encoder->bm_match[state][pos_state] );
@@ -385,6 +390,7 @@ int LZe_best_pair_sequence( struct LZ_encoder * const encoder, const int reps[nu
Tr_update( &encoder->trials[len], rep, 0, price +
Lee_price( &encoder->rep_match_len_encoder, len, pos_state ) );
}
+ }
int cur = 0;
int num_trials = main_len;
@@ -392,7 +398,7 @@ int LZe_best_pair_sequence( struct LZ_encoder * const encoder, const int reps[nu
while( true )
{
- if( ++cur >= num_trials )
+ if( ++cur >= num_trials ) // no more initialized trials
{
LZe_backward( encoder, cur );
return cur;
@@ -424,10 +430,11 @@ int LZe_best_pair_sequence( struct LZ_encoder * const encoder, const int reps[nu
LZe_mtf_reps( cur_trial->dis, cur_trial->reps );
}
+ const int pos_state = Mf_data_position( encoder->matchfinder ) & pos_state_mask;
const uint8_t prev_byte = Mf_peek( encoder->matchfinder, -1 );
const uint8_t cur_byte = Mf_peek( encoder->matchfinder, 0 );
const uint8_t match_byte = Mf_peek( encoder->matchfinder, -cur_trial->reps[0]-1 );
- const int pos_state = ++position & pos_state_mask;
+
int next_price = cur_trial->price + price0( encoder->bm_match[cur_trial->state][pos_state] );
if( St_is_char( cur_trial->state ) )
next_price += Lie_price_symbol( &encoder->literal_encoder, prev_byte, cur_byte );
@@ -472,7 +479,7 @@ int LZe_best_pair_sequence( struct LZ_encoder * const encoder, const int reps[nu
if( newlen <= len_limit &&
( newlen > min_match_len ||
( newlen == min_match_len &&
- encoder->match_distances[newlen] < modeled_distances ) ) )
+ encoder->match_distances[min_match_len] < modeled_distances ) ) )
{
const int normal_match_price = match_price +
price0( encoder->bm_rep[cur_trial->state] );
@@ -488,19 +495,19 @@ int LZe_best_pair_sequence( struct LZ_encoder * const encoder, const int reps[nu
}
- // End Of Stream mark => (dis == 0xFFFFFFFF, len == min_match_len)
+ // End Of Stream mark => (dis == 0xFFFFFFFFU, len == min_match_len)
void LZe_full_flush( struct LZ_encoder * const encoder, const State state )
{
- const int pos_state = ( Mf_data_position( encoder->matchfinder ) ) & pos_state_mask;
+ const int pos_state = Mf_data_position( encoder->matchfinder ) & pos_state_mask;
Re_encode_bit( &encoder->range_encoder, &encoder->bm_match[state][pos_state], 1 );
Re_encode_bit( &encoder->range_encoder, &encoder->bm_rep[state], 0 );
- LZe_encode_pair( encoder, 0xFFFFFFFF, min_match_len, pos_state );
+ LZe_encode_pair( encoder, 0xFFFFFFFFU, min_match_len, pos_state );
Re_flush( &encoder->range_encoder );
File_trailer trailer;
Ft_set_data_crc( trailer, LZe_crc( encoder ) );
Ft_set_data_size( trailer, Mf_data_position( encoder->matchfinder ) );
- Ft_set_member_size( trailer, LZe_member_position( encoder ) + sizeof (File_trailer) );
- for( unsigned int i = 0; i < sizeof (File_trailer); ++i )
+ Ft_set_member_size( trailer, LZe_member_position( encoder ) + Ft_size );
+ for( int i = 0; i < Ft_size; ++i )
Re_put_byte( &encoder->range_encoder, trailer[i] );
Re_flush_data( &encoder->range_encoder );
}
@@ -510,7 +517,7 @@ void LZe_init( struct LZ_encoder * const encoder, struct Matchfinder * const mf,
const File_header header, const int outfd )
{
encoder->longest_match_found = 0;
- encoder->crc_ = 0xFFFFFFFF;
+ encoder->crc_ = 0xFFFFFFFFU;
for( int i = 0; i < St_states; ++i )
{
@@ -541,17 +548,17 @@ void LZe_init( struct LZ_encoder * const encoder, struct Matchfinder * const mf,
LZe_fill_align_prices( encoder );
- for( unsigned int i = 0; i < sizeof (File_header); ++i )
+ for( int i = 0; i < Fh_size; ++i )
Re_put_byte( &encoder->range_encoder, header[i] );
}
bool LZe_encode_member( struct LZ_encoder * const encoder, const long long member_size )
{
- if( LZe_member_position( encoder ) != sizeof (File_header) )
+ if( LZe_member_position( encoder ) != Fh_size )
return false; // can be called only once
const long long member_size_limit =
- member_size - sizeof (File_trailer) - lze_max_marker_size;
+ member_size - Ft_size - lze_max_marker_size;
int fill_counter = 0;
int rep_distances[num_rep_distances];
State state = 0;
@@ -576,22 +583,23 @@ bool LZe_encode_member( struct LZ_encoder * const encoder, const long long membe
if( fill_counter <= 0 )
{ LZe_fill_distance_prices( encoder ); fill_counter = 512; }
- int ahead = LZe_best_pair_sequence( encoder, rep_distances, state );
+ int ahead = LZe_sequence_optimizer( encoder, rep_distances, state );
if( ahead <= 0 ) return false;
fill_counter -= ahead;
for( int i = 0; ; )
{
const int pos_state = ( Mf_data_position( encoder->matchfinder ) - ahead ) & pos_state_mask;
- int dis = encoder->trials[i].dis;
+ const int dis = encoder->trials[i].dis;
const int len = encoder->trials[i].price;
bool bit = ( dis < 0 && len == 1 );
Re_encode_bit( &encoder->range_encoder, &encoder->bm_match[state][pos_state], !bit );
- if( bit )
+ if( bit ) // literal byte
{
const uint8_t prev_byte = Mf_peek( encoder->matchfinder, -ahead-1 );
const uint8_t cur_byte = Mf_peek( encoder->matchfinder, -ahead );
+ CRC32_update_byte( &encoder->crc_, cur_byte );
if( St_is_char( state ) )
Lie_encode( &encoder->literal_encoder, &encoder->range_encoder, prev_byte, cur_byte );
else
@@ -601,8 +609,9 @@ bool LZe_encode_member( struct LZ_encoder * const encoder, const long long membe
}
St_set_char( &state );
}
- else
+ else // match or repeated match
{
+ CRC32_update_buf( &encoder->crc_, Mf_ptr_to_current_pos( encoder->matchfinder ) - ahead, len );
LZe_mtf_reps( dis, rep_distances );
bit = ( dis < num_rep_distances );
Re_encode_bit( &encoder->range_encoder, &encoder->bm_rep[state], bit );
@@ -631,8 +640,6 @@ bool LZe_encode_member( struct LZ_encoder * const encoder, const long long membe
St_set_match( &state );
}
}
- for( int j = 0; j < len; ++j )
- CRC32_update_byte( &encoder->crc_, Mf_peek( encoder->matchfinder, j-ahead ) );
ahead -= len; i += len;
if( LZe_member_position( encoder ) >= member_size_limit )
{
diff --git a/encoder.h b/encoder.h
index fe74f7c..975fe01 100644
--- a/encoder.h
+++ b/encoder.h
@@ -112,14 +112,14 @@ static inline int price_matched( const Bit_model bm[], const int symbol,
for( int i = 7; i >= 0; --i )
{
const int match_bit = ( match_byte >> i ) & 1;
- const int bit = ( symbol >> i ) & 1;
+ int bit = ( symbol >> i ) & 1;
price += price_bit( bm[(match_bit<<8)+model+0x100], bit );
model = ( model << 1 ) | bit;
if( match_bit != bit )
{
while( --i >= 0 )
{
- const int bit = ( symbol >> i ) & 1;
+ bit = ( symbol >> i ) & 1;
price += price_bit( bm[model], bit );
model = ( model << 1 ) | bit;
}
@@ -251,7 +251,7 @@ static inline void Re_put_byte( struct Range_encoder * const range_encoder,
static inline void Re_shift_low( struct Range_encoder * const range_encoder )
{
const uint32_t carry = range_encoder->low >> 32;
- if( range_encoder->low < 0xFF000000LL || carry == 1 )
+ if( range_encoder->low < 0xFF000000U || carry == 1 )
{
Re_put_byte( range_encoder, range_encoder->cache + carry );
for( ; range_encoder->ff_count > 0; --range_encoder->ff_count )
@@ -259,7 +259,7 @@ static inline void Re_shift_low( struct Range_encoder * const range_encoder )
range_encoder->cache = range_encoder->low >> 24;
}
else ++range_encoder->ff_count;
- range_encoder->low = ( range_encoder->low & 0x00FFFFFFLL ) << 8;
+ range_encoder->low = ( range_encoder->low & 0x00FFFFFFU ) << 8;
}
static inline void Re_init( struct Range_encoder * const range_encoder,
@@ -274,7 +274,7 @@ static inline void Re_init( struct Range_encoder * const range_encoder,
cleanup_and_fail( 1 );
}
range_encoder->pos = 0;
- range_encoder->range = 0xFFFFFFFF;
+ range_encoder->range = 0xFFFFFFFFU;
range_encoder->ff_count = 0;
range_encoder->outfd_ = outfd;
range_encoder->cache = 0;
@@ -296,7 +296,7 @@ static inline void Re_encode( struct Range_encoder * const range_encoder,
{
range_encoder->range >>= 1;
if( (symbol >> i) & 1 ) range_encoder->low += range_encoder->range;
- if( range_encoder->range <= 0x00FFFFFF )
+ if( range_encoder->range <= 0x00FFFFFFU )
{ range_encoder->range <<= 8; Re_shift_low( range_encoder ); }
}
}
@@ -316,7 +316,7 @@ static inline void Re_encode_bit( struct Range_encoder * const range_encoder,
range_encoder->range -= bound;
*probability -= *probability >> bit_model_move_bits;
}
- if( range_encoder->range <= 0x00FFFFFF )
+ if( range_encoder->range <= 0x00FFFFFFU )
{ range_encoder->range <<= 8; Re_shift_low( range_encoder ); }
}
@@ -353,15 +353,15 @@ static inline void Re_encode_matched( struct Range_encoder * const range_encoder
int model = 1;
for( int i = 7; i >= 0; --i )
{
- const int bit = ( symbol >> i ) & 1;
const int match_bit = ( match_byte >> i ) & 1;
+ int bit = ( symbol >> i ) & 1;
Re_encode_bit( range_encoder, &bm[(match_bit<<8)+model+0x100], bit );
model = ( model << 1 ) | bit;
if( match_bit != bit )
{
while( --i >= 0 )
{
- const int bit = ( symbol >> i ) & 1;
+ bit = ( symbol >> i ) & 1;
Re_encode_bit( range_encoder, &bm[model], bit );
model = ( model << 1 ) | bit;
}
@@ -387,17 +387,17 @@ static inline void Lee_update_prices( struct Len_encoder * const len_encoder,
const int pos_state )
{
int * const pps = len_encoder->prices[pos_state];
- int price = price0( len_encoder->choice1 );
+ int tmp = price0( len_encoder->choice1 );
int len = 0;
for( ; len < len_low_symbols && len < len_encoder->len_symbols; ++len )
- pps[len] = price +
+ pps[len] = tmp +
price_symbol( len_encoder->bm_low[pos_state], len, len_low_bits );
- price = price1( len_encoder->choice1 );
+ tmp = price1( len_encoder->choice1 );
for( ; len < len_low_symbols + len_mid_symbols && len < len_encoder->len_symbols; ++len )
- pps[len] = price + price0( len_encoder->choice2 ) +
+ pps[len] = tmp + price0( len_encoder->choice2 ) +
price_symbol( len_encoder->bm_mid[pos_state], len - len_low_symbols, len_mid_bits );
for( ; len < len_encoder->len_symbols; ++len )
- pps[len] = price + price1( len_encoder->choice2 ) +
+ pps[len] = tmp + price1( len_encoder->choice2 ) +
price_symbol( len_encoder->bm_high, len - len_low_symbols - len_mid_symbols, len_high_bits );
len_encoder->counters[pos_state] = len_encoder->len_symbols;
}
@@ -519,8 +519,9 @@ void LZe_fill_align_prices( struct LZ_encoder * const encoder );
void LZe_fill_distance_prices( struct LZ_encoder * const encoder );
static inline uint32_t LZe_crc( struct LZ_encoder * const encoder )
- { return encoder->crc_ ^ 0xFFFFFFFF; }
+ { return encoder->crc_ ^ 0xFFFFFFFFU; }
+ // move-to-front dis in/into reps
static inline void LZe_mtf_reps( const int dis, int reps[num_rep_distances] )
{
if( dis >= num_rep_distances )
@@ -631,7 +632,7 @@ static inline void LZe_backward( struct LZ_encoder * const encoder, int cur )
}
}
-int LZe_best_pair_sequence( struct LZ_encoder * const encoder,
+int LZe_sequence_optimizer( struct LZ_encoder * const encoder,
const int reps[num_rep_distances], const State state );
void LZe_full_flush( struct LZ_encoder * const encoder, const State state );
diff --git a/main.c b/main.c
index 3eb7c87..77cb1f6 100644
--- a/main.c
+++ b/main.c
@@ -399,8 +399,9 @@ static bool next_filename()
static int compress( const long long member_size, const long long volume_size,
- const struct Lzma_options * const encoder_options, const int infd,
- struct Pretty_print * const pp, const struct stat * const in_statsp )
+ const struct Lzma_options * const encoder_options,
+ const int infd, struct Pretty_print * const pp,
+ const struct stat * const in_statsp )
{
if( verbosity >= 1 ) Pp_show_msg( pp, 0 );
File_header header;
@@ -412,7 +413,7 @@ static int compress( const long long member_size, const long long volume_size,
struct Matchfinder matchfinder;
Mf_init( &matchfinder, Fh_get_dictionary_size( header ),
- encoder_options->match_len_limit, infd );
+ 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;
@@ -424,8 +425,7 @@ static int compress( const long long member_size, const long long volume_size,
const long long size =
min( member_size, volume_size - partial_volume_size );
if( !LZe_encode_member( &encoder, size ) )
- { Pp_show_msg( pp, 0 ); show_error( "encoder error", 0, false );
- 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 );
@@ -438,15 +438,14 @@ 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, 0 );
- show_error( "too many volume files", 0, false );
- 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", 0, false );
+ { Pp_show_msg( pp, 0 );
+ show_error( "can't reset matchfinder", errno, false );
retval = 1; break; }
}
@@ -470,20 +469,22 @@ 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 )
{
- struct Input_buffer ibuf;
- Ib_init( &ibuf, infd );
+ struct Range_decoder rdec;
+ Rd_init( &rdec, infd );
long long partial_file_pos = 0;
int retval = 0;
for( bool first_member = true; ; first_member = false, Pp_reset( pp ) )
{
File_header header;
- for( unsigned int i = 0; i < sizeof (File_header); ++i )
- header[i] = Ib_get_byte( &ibuf );
- if( Ib_finished( &ibuf ) ) // End Of File
+ Rd_reset_member_position( &rdec );
+ for( int i = 0; i < Fh_size; ++i )
+ header[i] = Rd_get_byte( &rdec );
+ if( Rd_finished( &rdec ) ) // End Of File
{
- if( !first_member ) break;
- Pp_show_msg( pp, "error reading member header" ); retval = 1; break;
+ if( first_member )
+ { Pp_show_msg( pp, "error reading member header" ); retval = 1; }
+ break;
}
if( !Fh_verify_magic( header ) )
{
@@ -513,10 +514,10 @@ static int decompress( const int infd, struct Pretty_print * const pp,
format_num( Fh_get_dictionary_size( header ), 9999, 0 ) );
}
struct LZ_decoder decoder;
- LZd_init( &decoder, header, &ibuf, outfd );
+ LZd_init( &decoder, header, &rdec, outfd );
const int result = LZd_decode_member( &decoder, pp );
- partial_file_pos += LZd_member_position( &decoder );
+ partial_file_pos += Rd_member_position( &rdec );
LZd_free( &decoder );
if( result != 0 )
{
@@ -535,7 +536,7 @@ static int decompress( const int infd, struct Pretty_print * const pp,
{ if( testing ) fprintf( stderr, "ok\n" );
else fprintf( stderr, "done\n" ); }
}
- Ib_free( &ibuf );
+ Rd_free( &rdec );
return retval;
}
@@ -683,6 +684,7 @@ int main( const int argc, const char * const argv[] )
// 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
@@ -692,7 +694,7 @@ int main( const int argc, const char * const argv[] )
{ 1 << 24, 108 }, // -7
{ 3 << 23, 163 }, // -8
{ 1 << 25, 273 } }; // -9
- struct Lzma_options encoder_options = option_mapping[5]; // default = "-6"
+ 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;
@@ -709,6 +711,7 @@ int main( const int argc, const char * const argv[] )
const struct ap_Option options[] =
{
+ { '0', 0, ap_no },
{ '1', "fast", ap_no },
{ '2', 0, ap_no },
{ '3', 0, ap_no },
@@ -721,6 +724,7 @@ int main( const int argc, const char * const argv[] )
{ 'b', "member-size", ap_yes },
{ 'c', "stdout", ap_no },
{ 'd', "decompress", ap_no },
+ { 'e', "extreme", ap_no },
{ 'f', "force", ap_no },
{ 'h', "help", ap_no },
{ 'k', "keep", ap_no },
@@ -736,9 +740,9 @@ int main( const int argc, const char * const argv[] )
struct Arg_parser parser;
if( !ap_init( &parser, argc, argv, options, 0 ) )
- { show_error( "Memory exhausted", 0, 0 ); return 1; }
+ { show_error( "memory exhausted", 0, false ); return 1; }
if( ap_error( &parser ) ) // bad option
- { show_error( ap_error( &parser ), 0, 1 ); return 1; }
+ { show_error( ap_error( &parser ), 0, true ); return 1; }
int argind = 0;
for( ; argind < ap_arguments( &parser ); ++argind )
@@ -748,13 +752,13 @@ int main( const int argc, const char * const argv[] )
if( !code ) break; // no more options
switch( code )
{
- case '1': case '2': case '3':
- case '4': case '5': case '6':
- case '7': case '8': case '9':
- encoder_options = option_mapping[code-'1']; break;
+ 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 'c': to_stdout = true; break;
case 'd': program_mode = m_decompress; 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;
diff --git a/testsuite/check.sh b/testsuite/check.sh
index a57224d..17146bc 100755
--- a/testsuite/check.sh
+++ b/testsuite/check.sh
@@ -28,7 +28,7 @@ fail=0
"${LZIP}" -cd "${testdir}"/test1.lz > copy || fail=1
cmp in copy || fail=1
-for i in s4Ki 1 2 3 4 5 6 7 8 9 ; do
+for i in s4Ki 0 1 2 3 4 5 6 7 8 9 ; do
"${LZIP}" -k -$i in || fail=1
mv -f in.lz copy.lz || fail=1
printf "garbage" >> copy.lz || fail=1
@@ -37,7 +37,7 @@ for i in s4Ki 1 2 3 4 5 6 7 8 9 ; do
printf .
done
-for i in s4Ki 1 2 3 4 5 6 7 8 9 ; do
+for i in s4Ki 0 1 2 3 4 5 6 7 8 9 ; do
"${LZIP}" -c -$i in > out || fail=1
printf "g" >> out || fail=1
"${LZIP}" -cd out > copy || fail=1
@@ -45,15 +45,15 @@ for i in s4Ki 1 2 3 4 5 6 7 8 9 ; do
printf .
done
-for i in s4Ki 1 2 3 4 5 6 7 8 9 ; do
+for i in s4Ki 0 1 2 3 4 5 6 7 8 9 ; do
"${LZIP}" -$i < in > out || fail=1
"${LZIP}" -d < out > copy || fail=1
cmp in copy || fail=1
printf .
done
-for i in s4Ki 1 2 3 4 5 6 7 8 9 ; do
- "${LZIP}" -f -$i -o out < in || fail=1
+for i in s4Ki 0 1 2 3 4 5 6 7 8 9 ; do
+ "${LZIP}" -fe -$i -o out < in || fail=1
"${LZIP}" -df -o copy < out.lz || fail=1
cmp in copy || fail=1
printf .
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-03 18:02:00 +0000