lzip/lunzip
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Adding upstream version 1.5~rc2.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
Daniel Baumann 2025-02-17 22:14:05 +01:00
parent df42bf1fa4
commit 25083e3fd1
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
14 changed files with 215 additions and 255 deletions
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88
lzip.h
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@ -1,5 +1,5 @@
/* Lunzip - Decompressor for lzip files
Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
Copyright (C) 2010, 2011, 2012, 2013, 2014 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -116,12 +116,29 @@ struct Pretty_print
{
const char * name;
const char * stdin_name;
int longest_name;
unsigned longest_name;
bool first_post;
};
void Pp_init( struct Pretty_print * const pp, const char * const filenames[],
const int num_filenames );
static inline void Pp_init( struct Pretty_print * const pp,
const char * const filenames[], const int num_filenames )
{
unsigned stdin_name_len;
int i;
pp->name = 0;
pp->stdin_name = "(stdin)";
pp->longest_name = 0;
pp->first_post = false;
stdin_name_len = strlen( pp->stdin_name );
for( i = 0; i < num_filenames; ++i )
{
const char * const s = filenames[i];
const unsigned len = (strcmp( s, "-" ) == 0) ? stdin_name_len : strlen( s );
if( len > pp->longest_name ) pp->longest_name = len;
}
if( pp->longest_name == 0 ) pp->longest_name = stdin_name_len;
}
static inline void Pp_set_name( struct Pretty_print * const pp,
const char * const filename )
@ -154,11 +171,9 @@ static inline void CRC32_init( void )
}
}
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 * const crc,
const uint8_t * const buffer, const int size )
const uint8_t * const buffer,
const int size )
{
int i;
for( i = 0; i < size; ++i )
@ -166,14 +181,6 @@ static inline void CRC32_update_buf( uint32_t * const crc,
}
static inline int real_bits( unsigned value )
{
int bits = 0;
while( value > 0 ) { value >>= 1; ++bits; }
return bits;
}
static const uint8_t magic_string[4] = { 0x4C, 0x5A, 0x49, 0x50 }; /* "LZIP" */
typedef uint8_t File_header[6]; /* 0-3 magic bytes */
@ -181,9 +188,6 @@ typedef uint8_t File_header[6]; /* 0-3 magic bytes */
/* 5 coded_dict_size */
enum { Fh_size = 6 };
static inline void Fh_set_magic( File_header data )
{ memcpy( data, magic_string, 4 ); data[4] = 1; }
static inline bool Fh_verify_magic( const File_header data )
{ return ( memcmp( data, magic_string, 4 ) == 0 ); }
@ -201,25 +205,6 @@ static inline unsigned Fh_get_dictionary_size( const File_header data )
return sz;
}
static inline bool Fh_set_dictionary_size( File_header data, const unsigned sz )
{
if( sz >= min_dictionary_size && sz <= max_dictionary_size )
{
data[5] = real_bits( sz - 1 );
if( sz > min_dictionary_size )
{
const unsigned base_size = 1 << data[5];
const unsigned wedge = base_size / 16;
int i;
for( i = 7; i >= 1; --i )
if( base_size - ( i * wedge ) >= sz )
{ data[5] |= ( i << 5 ); break; }
}
return true;
}
return false;
}
typedef uint8_t File_trailer[20];
/* 0-3 CRC32 of the uncompressed data */
@ -231,45 +216,24 @@ enum { Ft_size = 20 };
static inline unsigned Ft_get_data_crc( const File_trailer data )
{
unsigned tmp = 0;
int i;
for( i = 3; i >= 0; --i ) { tmp <<= 8; tmp += data[i]; }
int i; for( i = 3; i >= 0; --i ) { tmp <<= 8; tmp += data[i]; }
return tmp;
}
static inline void Ft_set_data_crc( File_trailer data, unsigned crc )
{
int i;
for( i = 0; i <= 3; ++i ) { data[i] = (uint8_t)crc; crc >>= 8; }
}
static inline unsigned long long Ft_get_data_size( const File_trailer data )
{
unsigned long long tmp = 0;
int i;
for( i = 11; i >= 4; --i ) { tmp <<= 8; tmp += data[i]; }
int i; for( i = 11; i >= 4; --i ) { tmp <<= 8; tmp += data[i]; }
return tmp;
}
static inline void Ft_set_data_size( File_trailer data, unsigned long long sz )
{
int i;
for( i = 4; i <= 11; ++i ) { data[i] = (uint8_t)sz; sz >>= 8; }
}
static inline unsigned long long Ft_get_member_size( const File_trailer data )
{
unsigned long long tmp = 0;
int i;
for( i = 19; i >= 12; --i ) { tmp <<= 8; tmp += data[i]; }
int i; for( i = 19; i >= 12; --i ) { tmp <<= 8; tmp += data[i]; }
return tmp;
}
static inline void Ft_set_member_size( File_trailer data, unsigned long long sz )
{
int i;
for( i = 12; i <= 19; ++i ) { data[i] = (uint8_t)sz; sz >>= 8; }
}
/* defined in main.c */
extern int verbosity;