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-rw-r--r--ChangeLog8
-rw-r--r--INSTALL7
-rw-r--r--Makefile.in4
-rw-r--r--NEWS11
-rw-r--r--README12
-rw-r--r--carg_parser.c10
-rw-r--r--carg_parser.h2
-rwxr-xr-xconfigure28
-rw-r--r--decoder.c71
-rw-r--r--decoder.h71
-rw-r--r--doc/lunzip.17
-rw-r--r--lzip.h (renamed from lunzip.h)34
-rw-r--r--main.c23
13 files changed, 168 insertions, 120 deletions
diff --git a/ChangeLog b/ChangeLog
index b08eb00..c999a79 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2013-05-18 Antonio Diaz Diaz <antonio@gnu.org>
+
+ * Version 1.3-rc1 released.
+ * Decompression time has been reduced by 1%.
+ * main.c (show_header): Show header version if verbosity >= 4.
+ * Ignore option '-n, --threads' for compatibility with plzip.
+ * configure: Options now accept a separate argument.
+
2013-02-18 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.2 released.
diff --git a/INSTALL b/INSTALL
index 53f1df3..2ec1487 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,7 +1,7 @@
Requirements
------------
You will need a C compiler.
-I use gcc 4.7.2 and 3.3.6, but the code should compile with any
+I use gcc 4.8.0 and 3.3.6, but the code should compile with any
standards compliant compiler.
Gcc is available at http://gcc.gnu.org.
@@ -36,8 +36,9 @@ the main archive.
typing 'make install-bin', 'make install-info' or 'make install-man'
respectively.
-5a. Type 'make install-as-lzip' to install the program and any data
- files and documentation, and link the program to the name 'lzip'.
+ Instead of 'make install', you can type 'make install-as-lzip' to
+ install the program and any data files and documentation, and link
+ the program to the name 'lzip'.
Another way
diff --git a/Makefile.in b/Makefile.in
index 378f626..7fc59ac 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -29,8 +29,8 @@ main.o : main.c
$(objs) : Makefile
carg_parser.o : carg_parser.h
-decoder.o : lunzip.h decoder.h
-main.o : carg_parser.h lunzip.h decoder.h
+decoder.o : lzip.h decoder.h
+main.o : carg_parser.h lzip.h decoder.h
doc : man
diff --git a/NEWS b/NEWS
index b9ed0f4..037f35b 100644
--- a/NEWS
+++ b/NEWS
@@ -1,7 +1,10 @@
-Changes in version 1.2:
+Changes in version 1.3:
-Decompression time has been reduced by 12%.
+Decompression time has been reduced by 1%.
-The target "install-as-lzip" has been added to the Makefile.
+File version is now shown only if verbosity >= 4.
-The target "install-bin" has been added to the Makefile.
+Option "-n, --threads" is now accepted and ignored for compatibility
+with plzip.
+
+"configure" now accepts options with a separate argument.
diff --git a/README b/README
index 217fb0a..f02c51b 100644
--- a/README
+++ b/README
@@ -5,6 +5,18 @@ small size makes it well suited for embedded devices or software
installers that need to decompress files but do not need compression
capabilities.
+Lunzip uses the same well-defined exit status values used by bzip2,
+which makes it safer when used in pipes or scripts than compressors
+returning ambiguous warning values, like gzip.
+
+The 4 factor integrity checking of the lzip format guarantees that the
+decompressed version of the data is identical to the original. This
+guards against corruption of the compressed data, and against undetected
+bugs in lunzip (hopefully very unlikely). The chances of data corruption
+going undetected are microscopic. Be aware, though, that the check
+occurs upon decompression, so it can only tell you that something is
+wrong. It can't help you recover the original uncompressed data.
+
If you ever need to recover data from a damaged lzip file, try the
lziprecover program.
diff --git a/carg_parser.c b/carg_parser.c
index 973bb7e..a86f76f 100644
--- a/carg_parser.c
+++ b/carg_parser.c
@@ -1,5 +1,5 @@
/* Arg_parser - POSIX/GNU command line argument parser. (C version)
- Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012
+ Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Antonio Diaz Diaz.
This library is free software: you can redistribute it and/or modify
@@ -89,15 +89,14 @@ static char parse_long_option( struct Arg_parser * const ap,
int * const argindp )
{
unsigned len;
- int index = -1;
- int i;
+ int index = -1, i;
char exact = 0, ambig = 0;
for( len = 0; opt[len+2] && opt[len+2] != '='; ++len ) ;
/* Test all long options for either exact match or abbreviated matches. */
for( i = 0; options[i].code != 0; ++i )
- if( options[i].name && !strncmp( options[i].name, &opt[2], len ) )
+ if( options[i].name && strncmp( options[i].name, &opt[2], len ) == 0 )
{
if( strlen( options[i].name ) == len ) /* Exact match found */
{ index = i; exact = 1; break; }
@@ -165,8 +164,7 @@ static char parse_short_option( struct Arg_parser * const ap,
while( cind > 0 )
{
- int index = -1;
- int i;
+ int index = -1, i;
const unsigned char code = opt[cind];
char code_str[2];
code_str[0] = code; code_str[1] = 0;
diff --git a/carg_parser.h b/carg_parser.h
index 3575dd7..41aa7b3 100644
--- a/carg_parser.h
+++ b/carg_parser.h
@@ -1,5 +1,5 @@
/* Arg_parser - POSIX/GNU command line argument parser. (C version)
- Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012
+ Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Antonio Diaz Diaz.
This library is free software: you can redistribute it and/or modify
diff --git a/configure b/configure
index 703fe5d..5ce6cc3 100755
--- a/configure
+++ b/configure
@@ -5,12 +5,10 @@
# This configure script is free software: you have unlimited permission
# to copy, distribute and modify it.
-args=
-no_create=
pkgname=lunzip
-pkgversion=1.2
+pkgversion=1.3-rc1
progname=lunzip
-srctrigger=lunzip.h
+srctrigger=doc/lunzip.1
# clear some things potentially inherited from environment.
LC_ALL=C
@@ -36,10 +34,12 @@ if [ ! -x /bin/gcc ] &&
fi
# Loop over all args
-while [ -n "$1" ] ; do
+args=
+no_create=
+while [ $# != 0 ] ; do
# Get the first arg, and shuffle
- option=$1
+ option=$1 ; arg2=no
shift
# Add the argument quoted to args
@@ -74,6 +74,14 @@ while [ -n "$1" ] ; do
--version | -V)
echo "Configure script for ${pkgname} version ${pkgversion}"
exit 0 ;;
+ --srcdir) srcdir=$1 ; arg2=yes ;;
+ --prefix) prefix=$1 ; arg2=yes ;;
+ --exec-prefix) exec_prefix=$1 ; arg2=yes ;;
+ --bindir) bindir=$1 ; arg2=yes ;;
+ --datarootdir) datarootdir=$1 ; arg2=yes ;;
+ --infodir) infodir=$1 ; arg2=yes ;;
+ --mandir) mandir=$1 ; arg2=yes ;;
+
--srcdir=*) srcdir=${optarg} ;;
--prefix=*) prefix=${optarg} ;;
--exec-prefix=*) exec_prefix=${optarg} ;;
@@ -93,6 +101,14 @@ while [ -n "$1" ] ; do
echo "configure: Unrecognized option: \"${option}\"; use --help for usage." 1>&2
exit 1 ;;
esac
+
+ # Check if the option took a separate argument
+ if [ "${arg2}" = yes ] ; then
+ if [ $# != 0 ] ; then args="${args} \"$1\"" ; shift
+ else echo "configure: Missing argument to \"${option}\"" 1>&2
+ exit 1
+ fi
+ fi
done
# Find the source files, if location was not specified.
diff --git a/decoder.c b/decoder.c
index 25f7c73..55259be 100644
--- a/decoder.c
+++ b/decoder.c
@@ -25,7 +25,7 @@
#include <string.h>
#include <unistd.h>
-#include "lunzip.h"
+#include "lzip.h"
#include "decoder.h"
@@ -124,10 +124,10 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
File_trailer trailer;
const int trailer_size = Ft_versioned_size( decoder->member_version );
const unsigned long long member_size =
- Rd_member_position( decoder->range_decoder ) + trailer_size;
+ Rd_member_position( decoder->rdec ) + trailer_size;
bool error = false;
- int size = Rd_read_data( decoder->range_decoder, trailer, trailer_size );
+ int size = Rd_read_data( decoder->rdec, trailer, trailer_size );
if( size < trailer_size )
{
error = true;
@@ -139,8 +139,10 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
}
while( size < trailer_size ) trailer[size++] = 0;
}
+
if( decoder->member_version == 0 ) Ft_set_member_size( trailer, member_size );
- if( decoder->range_decoder->code != 0 )
+
+ if( decoder->rdec->code != 0 )
{
error = true;
Pp_show_msg( pp, "Range decoder final code is not zero" );
@@ -175,7 +177,7 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
Ft_get_member_size( trailer ), member_size, member_size );
}
}
- if( !error && pp->verbosity >= 3 && LZd_data_position( decoder ) > 0 && member_size > 0 )
+ if( !error && pp->verbosity >= 2 && LZd_data_position( decoder ) > 0 && member_size > 0 )
fprintf( stderr, "%6.3f:1, %6.3f bits/byte, %5.2f%% saved. ",
(double)LZd_data_position( decoder ) / member_size,
( 8.0 * member_size ) / LZd_data_position( decoder ),
@@ -193,88 +195,87 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
int LZd_decode_member( struct LZ_decoder * const decoder,
struct Pretty_print * const pp )
{
+ struct Range_decoder * const rdec = decoder->rdec;
unsigned rep0 = 0; /* rep[0-3] latest four distances */
unsigned rep1 = 0; /* used for efficient coding of */
unsigned rep2 = 0; /* repeated distances */
unsigned rep3 = 0;
-
State state = 0;
- Rd_load( decoder->range_decoder );
- while( !Rd_finished( decoder->range_decoder ) )
+ Rd_load( rdec );
+ while( !Rd_finished( rdec ) )
{
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( rdec, &decoder->bm_match[state][pos_state] ) == 0 ) /* 1st bit */
{
const uint8_t prev_byte = LZd_get_prev_byte( decoder );
if( St_is_char( state ) )
{
state -= ( state < 4 ) ? state : 3;
- LZd_put_byte( decoder, Rd_decode_tree( decoder->range_decoder,
+ LZd_put_byte( decoder, Rd_decode_tree( rdec,
decoder->bm_literal[get_lit_state(prev_byte)], 8 ) );
}
else
{
state -= ( state < 10 ) ? 3 : 6;
- LZd_put_byte( decoder, Rd_decode_matched( decoder->range_decoder,
- decoder->bm_literal[get_lit_state(prev_byte)], LZd_get_byte( decoder, rep0 ) ) );
+ LZd_put_byte( decoder, Rd_decode_matched( rdec,
+ decoder->bm_literal[get_lit_state(prev_byte)],
+ LZd_get_byte( decoder, rep0 ) ) );
}
}
else
{
int len;
- if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep[state] ) == 1 )
+ if( Rd_decode_bit( rdec, &decoder->bm_rep[state] ) == 1 ) /* 2nd bit */
{
- len = 0;
- if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep0[state] ) == 1 )
+ if( Rd_decode_bit( rdec, &decoder->bm_rep0[state] ) == 0 ) /* 3rd bit */
+ {
+ if( Rd_decode_bit( rdec, &decoder->bm_len[state][pos_state] ) == 0 ) /* 4th bit */
+ { state = St_set_short_rep( state );
+ LZd_put_byte( decoder, LZd_get_byte( decoder, rep0 ) ); continue; }
+ }
+ else
{
unsigned distance;
- if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep1[state] ) == 0 )
+ if( Rd_decode_bit( rdec, &decoder->bm_rep1[state] ) == 0 ) /* 4th bit */
distance = rep1;
else
{
- if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep2[state] ) == 0 )
+ if( Rd_decode_bit( rdec, &decoder->bm_rep2[state] ) == 0 ) /* 5th bit */
distance = rep2;
- else { distance = rep3; rep3 = rep2; }
+ else
+ { distance = rep3; rep3 = rep2; }
rep2 = rep1;
}
rep1 = rep0;
rep0 = distance;
}
- else
- {
- if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_len[state][pos_state] ) == 0 )
- { state = St_set_short_rep( state ); len = 1; }
- }
- if( len == 0 )
- {
- state = St_set_rep( state );
- len = min_match_len + Led_decode( &decoder->rep_match_len_decoder, decoder->range_decoder, pos_state );
- }
+ state = St_set_rep( state );
+ len = min_match_len + Rd_decode_len( rdec, &decoder->rep_len_model, pos_state );
}
else
{
int dis_slot;
const unsigned rep0_saved = rep0;
- len = min_match_len + Led_decode( &decoder->len_decoder, decoder->range_decoder, pos_state );
- dis_slot = Rd_decode_tree6( decoder->range_decoder, decoder->bm_dis_slot[get_dis_state(len)] );
+ len = min_match_len + Rd_decode_len( rdec, &decoder->match_len_model, pos_state );
+ dis_slot = Rd_decode_tree6( rdec, decoder->bm_dis_slot[get_dis_state(len)] );
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,
+ rep0 += Rd_decode_tree_reversed( rdec,
decoder->bm_dis + rep0 - dis_slot - 1,
direct_bits );
else
{
- rep0 += Rd_decode( decoder->range_decoder, direct_bits - dis_align_bits ) << dis_align_bits;
- rep0 += Rd_decode_tree_reversed4( decoder->range_decoder, decoder->bm_align );
+ rep0 += Rd_decode( rdec, direct_bits - dis_align_bits ) << dis_align_bits;
+ rep0 += Rd_decode_tree_reversed4( rdec, decoder->bm_align );
if( rep0 == 0xFFFFFFFFU ) /* Marker found */
{
rep0 = rep0_saved;
- Rd_normalize( decoder->range_decoder );
+ Rd_normalize( rdec );
LZd_flush_data( decoder );
if( len == min_match_len ) /* End Of Stream marker */
{
@@ -282,7 +283,7 @@ int LZd_decode_member( struct LZ_decoder * const decoder,
}
if( len == min_match_len + 1 ) /* Sync Flush marker */
{
- Rd_load( decoder->range_decoder ); continue;
+ Rd_load( rdec ); continue;
}
if( pp->verbosity >= 0 )
{
diff --git a/decoder.h b/decoder.h
index 29b164a..7bf78bc 100644
--- a/decoder.h
+++ b/decoder.h
@@ -140,24 +140,24 @@ static inline int Rd_decode_bit( struct Range_decoder * const rdec,
static inline int Rd_decode_tree( struct Range_decoder * const rdec,
Bit_model bm[], const int num_bits )
{
- int model = 1;
+ int symbol = 1;
int i;
for( i = num_bits; i > 0; --i )
- model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
- return model - (1 << num_bits);
+ symbol = ( symbol << 1 ) | Rd_decode_bit( rdec, &bm[symbol] );
+ return symbol - (1 << num_bits);
}
static inline int Rd_decode_tree6( struct Range_decoder * const rdec,
Bit_model bm[] )
{
- int model = 1;
- model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
- model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
- model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
- model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
- model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
- model = ( model << 1 ) | Rd_decode_bit( rdec, &bm[model] );
- return model - (1 << 6);
+ int symbol = 1;
+ symbol = ( symbol << 1 ) | Rd_decode_bit( rdec, &bm[symbol] );
+ symbol = ( symbol << 1 ) | Rd_decode_bit( rdec, &bm[symbol] );
+ symbol = ( symbol << 1 ) | Rd_decode_bit( rdec, &bm[symbol] );
+ symbol = ( symbol << 1 ) | Rd_decode_bit( rdec, &bm[symbol] );
+ symbol = ( symbol << 1 ) | Rd_decode_bit( rdec, &bm[symbol] );
+ symbol = ( symbol << 1 ) | Rd_decode_bit( rdec, &bm[symbol] );
+ return symbol - (1 << 6);
}
static inline int Rd_decode_tree_reversed( struct Range_decoder * const rdec,
@@ -213,36 +213,17 @@ static inline int Rd_decode_matched( struct Range_decoder * const rdec,
return symbol - 0x100;
}
-
-struct Len_decoder
- {
- Bit_model choice1;
- Bit_model choice2;
- Bit_model bm_low[pos_states][len_low_symbols];
- Bit_model bm_mid[pos_states][len_mid_symbols];
- Bit_model bm_high[len_high_symbols];
- };
-
-static inline void Led_init( struct Len_decoder * const len_decoder )
- {
- Bm_init( &len_decoder->choice1 );
- Bm_init( &len_decoder->choice2 );
- Bm_array_init( len_decoder->bm_low[0], pos_states * len_low_symbols );
- Bm_array_init( len_decoder->bm_mid[0], pos_states * len_mid_symbols );
- Bm_array_init( len_decoder->bm_high, len_high_symbols );
- }
-
-static inline int Led_decode( struct Len_decoder * const len_decoder,
- struct Range_decoder * const rdec,
- const int pos_state )
+static inline int Rd_decode_len( struct Range_decoder * const rdec,
+ struct Len_model * const lm,
+ const int pos_state )
{
- 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 )
+ if( Rd_decode_bit( rdec, &lm->choice1 ) == 0 )
+ return Rd_decode_tree( rdec, lm->bm_low[pos_state], len_low_bits );
+ if( Rd_decode_bit( rdec, &lm->choice2 ) == 0 )
return len_low_symbols +
- Rd_decode_tree( rdec, len_decoder->bm_mid[pos_state], len_mid_bits );
+ Rd_decode_tree( rdec, lm->bm_mid[pos_state], len_mid_bits );
return len_low_symbols + len_mid_symbols +
- Rd_decode_tree( rdec, len_decoder->bm_high, len_high_bits );
+ Rd_decode_tree( rdec, lm->bm_high, len_high_bits );
}
@@ -269,9 +250,9 @@ 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 Len_decoder len_decoder;
- struct Len_decoder rep_match_len_decoder;
+ struct Range_decoder * rdec;
+ struct Len_model match_len_model;
+ struct Len_model rep_len_model;
};
void LZd_flush_data( struct LZ_decoder * const decoder );
@@ -322,7 +303,7 @@ static inline void LZd_copy_block( struct LZ_decoder * const decoder,
static inline bool LZd_init( struct LZ_decoder * const decoder,
const File_header header,
- struct Range_decoder * const rdec, const int ofd )
+ struct Range_decoder * const rde, const int ofd )
{
decoder->partial_data_pos = 0;
decoder->dictionary_size = Fh_get_dictionary_size( header );
@@ -346,9 +327,9 @@ static inline bool LZd_init( struct LZ_decoder * const decoder,
Bm_array_init( decoder->bm_dis, modeled_distances - end_dis_model );
Bm_array_init( decoder->bm_align, dis_align_size );
- decoder->range_decoder = rdec;
- Led_init( &decoder->len_decoder );
- Led_init( &decoder->rep_match_len_decoder );
+ decoder->rdec = rde;
+ Lm_init( &decoder->match_len_model );
+ Lm_init( &decoder->rep_len_model );
decoder->buffer[decoder->buffer_size-1] = 0; /* prev_byte of first_byte */
return true;
}
diff --git a/doc/lunzip.1 b/doc/lunzip.1
index 820aa8b..8fe9741 100644
--- a/doc/lunzip.1
+++ b/doc/lunzip.1
@@ -1,5 +1,5 @@
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.37.1.
-.TH LUNZIP "1" "February 2013" "Lunzip 1.2" "User Commands"
+.TH LUNZIP "1" "May 2013" "Lunzip 1.3-rc1" "User Commands"
.SH NAME
Lunzip \- small decompressor for lzip files
.SH SYNOPSIS
@@ -41,6 +41,11 @@ be verbose (a 2nd \fB\-v\fR gives more)
.PP
If no file names are given, lunzip decompresses from standard input to
standard output.
+.PP
+Exit status: 0 for a normal exit, 1 for environmental problems (file
+not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or
+invalid input file, 3 for an internal consistency error (eg, bug) which
+caused lunzip to panic.
.SH "REPORTING BUGS"
Report bugs to lzip\-bug@nongnu.org
.br
diff --git a/lunzip.h b/lzip.h
index 4437ec6..d391fb1 100644
--- a/lunzip.h
+++ b/lzip.h
@@ -57,7 +57,7 @@ enum {
dis_slot_bits = 6,
start_dis_model = 4,
end_dis_model = 14,
- modeled_distances = 1 << (end_dis_model / 2),
+ modeled_distances = 1 << (end_dis_model / 2), /* 128 */
dis_align_bits = 4,
dis_align_size = 1 << dis_align_bits,
@@ -94,6 +94,24 @@ static inline void Bm_init( Bit_model * const probability )
static inline void Bm_array_init( Bit_model * const p, const int size )
{ int i = 0; while( i < size ) p[i++] = bit_model_total / 2; }
+struct Len_model
+ {
+ Bit_model choice1;
+ Bit_model choice2;
+ Bit_model bm_low[pos_states][len_low_symbols];
+ Bit_model bm_mid[pos_states][len_mid_symbols];
+ Bit_model bm_high[len_high_symbols];
+ };
+
+static inline void Lm_init( struct Len_model * const lm )
+ {
+ Bm_init( &lm->choice1 );
+ Bm_init( &lm->choice2 );
+ Bm_array_init( lm->bm_low[0], pos_states * len_low_symbols );
+ Bm_array_init( lm->bm_mid[0], pos_states * len_mid_symbols );
+ Bm_array_init( lm->bm_high, len_high_symbols );
+ }
+
struct Pretty_print
{
@@ -138,11 +156,11 @@ static inline void CRC32_init( void )
}
}
-static inline void CRC32_update_byte( uint32_t * crc, const uint8_t byte )
+static inline void CRC32_update_byte( uint32_t * const crc, const uint8_t byte )
{ *crc = crc32[(*crc^byte)&0xFF] ^ ( *crc >> 8 ); }
-static inline void CRC32_update_buf( uint32_t * crc, const uint8_t * const buffer,
- const int size )
+static inline void CRC32_update_buf( uint32_t * const crc,
+ const uint8_t * const buffer, const int size )
{
int i;
for( i = 0; i < size; ++i )
@@ -177,11 +195,11 @@ static inline uint8_t Fh_version( const File_header data )
static inline bool Fh_verify_version( const File_header data )
{ return ( data[4] <= 1 ); }
-static inline int Fh_get_dictionary_size( const File_header data )
+static inline unsigned Fh_get_dictionary_size( const File_header data )
{
- int sz = ( 1 << ( data[5] & 0x1F ) );
- if( sz > min_dictionary_size && sz <= max_dictionary_size )
- sz -= ( sz / 16 ) * ( ( data[5] >> 5 ) & 0x07 );
+ unsigned sz = ( 1 << ( data[5] & 0x1F ) );
+ if( sz > min_dictionary_size )
+ sz -= ( sz / 16 ) * ( ( data[5] >> 5 ) & 7 );
return sz;
}
diff --git a/main.c b/main.c
index 9ba2280..75c4ea9 100644
--- a/main.c
+++ b/main.c
@@ -15,7 +15,7 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
- Return values: 0 for a normal exit, 1 for environmental problems
+ Exit status: 0 for a normal exit, 1 for environmental problems
(file not found, invalid flags, I/O errors, etc), 2 to indicate a
corrupt or invalid input file, 3 for an internal consistency error
(eg, bug) which caused lunzip to panic.
@@ -51,7 +51,7 @@
#endif
#include "carg_parser.h"
-#include "lunzip.h"
+#include "lzip.h"
#include "decoder.h"
#if CHAR_BIT != 8
@@ -101,6 +101,10 @@ static void show_help( void )
" -v, --verbose be verbose (a 2nd -v gives more)\n"
"If no file names are given, lunzip decompresses from standard input to\n"
"standard output.\n"
+ "\nExit status: 0 for a normal exit, 1 for environmental problems (file\n"
+ "not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or\n"
+ "invalid input file, 3 for an internal consistency error (eg, bug) which\n"
+ "caused lunzip to panic.\n"
"\nReport bugs to lzip-bug@nongnu.org\n"
"Lunzip home page: http://www.nongnu.org/lzip/lunzip.html\n" );
}
@@ -129,8 +133,9 @@ void show_header( const File_header header )
for( i = 0; i < 8 && ( num > 9999 || ( exact && num >= factor ) ); ++i )
{ num /= factor; if( num % factor != 0 ) exact = false;
p = prefix[i]; np = ""; }
- fprintf( stderr, "version %d, dictionary size %s%4u %sB. ",
- Fh_version( header ), np, num, p );
+ if( verbosity >= 4 )
+ fprintf( stderr, "version %d, ", Fh_version( header ) );
+ fprintf( stderr, "dictionary size %s%4u %sB. ", np, num, p );
}
@@ -326,7 +331,7 @@ static int decompress( const int infd, struct Pretty_print * const pp,
retval = 2; break; }
if( verbosity >= 2 || ( verbosity == 1 && first_member ) )
- { Pp_show_msg( pp, 0 ); if( verbosity >= 2 ) show_header( header ); }
+ { Pp_show_msg( pp, 0 ); if( verbosity >= 3 ) show_header( header ); }
if( !LZd_init( &decoder, header, &rdec, outfd ) )
{
@@ -350,13 +355,11 @@ static int decompress( const int infd, struct Pretty_print * const pp,
retval = 2; break;
}
if( verbosity >= 2 )
- { if( testing ) fprintf( stderr, "ok\n" );
- else fprintf( stderr, "done\n" ); Pp_reset( pp ); }
+ { fprintf( stderr, testing ? "ok\n" : "done\n" ); Pp_reset( pp ); }
}
Rd_free( &rdec );
if( verbosity == 1 && retval == 0 )
- { if( testing ) fprintf( stderr, "ok\n" );
- else fprintf( stderr, "done\n" ); }
+ fprintf( stderr, testing ? "ok\n" : "done\n" );
return retval;
}
@@ -448,6 +451,7 @@ int main( const int argc, const char * const argv[] )
{ 'f', "force", ap_no },
{ 'h', "help", ap_no },
{ 'k', "keep", ap_no },
+ { 'n', "threads", ap_yes },
{ 'o', "output", ap_yes },
{ 'q', "quiet", ap_no },
{ 't', "test", ap_no },
@@ -477,6 +481,7 @@ int main( const int argc, const char * const argv[] )
case 'f': force = true; break;
case 'h': show_help(); return 0;
case 'k': keep_input_files = true; break;
+ case 'n': break;
case 'o': default_output_filename = arg; break;
case 'q': verbosity = -1; break;
case 't': testing = true; break;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 05:10:33 +0000