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author | Daniel Baumann <mail@daniel-baumann.ch> | 2015-11-07 14:47:48 +0000 |
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committer | Daniel Baumann <mail@daniel-baumann.ch> | 2015-11-07 14:47:48 +0000 |
commit | 634e93bbccb1f17716f009d46c5042d24b62192d (patch) | |
tree | 0022b051ea10c91d90759abb6f5012abb2cc8b49 /clzip.h | |
parent | Adding debian version 1.4~rc2-2. (diff) | |
download | pdlzip-634e93bbccb1f17716f009d46c5042d24b62192d.tar.xz pdlzip-634e93bbccb1f17716f009d46c5042d24b62192d.zip |
Merging upstream version 1.4.
Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
Diffstat (limited to 'clzip.h')
-rw-r--r-- | clzip.h | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/clzip.h b/clzip.h deleted file mode 100644 index 0ec2756..0000000 --- a/clzip.h +++ /dev/null @@ -1,223 +0,0 @@ -/* Pdlzip - Data compressor based on the LZMA algorithm - Copyright (C) 2010, 2011, 2012, 2013 Antonio Diaz Diaz. - - This program is free software: you have unlimited permission - to copy, distribute and modify it. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -*/ - -#ifndef __cplusplus -enum Bool { false = 0, true = 1 }; -typedef enum Bool bool; -#endif - -#ifndef max - #define max(x,y) ((x) >= (y) ? (x) : (y)) -#endif -#ifndef min - #define min(x,y) ((x) <= (y) ? (x) : (y)) -#endif - -typedef int State; - -enum { - min_dictionary_bits = 12, - min_dictionary_size = 1 << min_dictionary_bits, - max_dictionary_bits = 29, - max_dictionary_size = 1 << max_dictionary_bits, - literal_context_bits = 3, - pos_state_bits = 2, - - len_low_bits = 3, - len_mid_bits = 3, - len_high_bits = 8, - len_low_symbols = 1 << len_low_bits, - len_mid_symbols = 1 << len_mid_bits, - len_high_symbols = 1 << len_high_bits, - max_len_symbols = len_low_symbols + len_mid_symbols + len_high_symbols, - - min_match_len = 2, /* must be 2 */ - max_match_len = min_match_len + max_len_symbols - 1, /* 273 */ - min_match_len_limit = 5 }; - - -struct Pretty_print - { - const char * name; - const char * stdin_name; - int longest_name; - int verbosity; - bool first_post; - }; - -void Pp_init( struct Pretty_print * const pp, const char * const filenames[], - const int num_filenames, const int v ); - -static inline void Pp_set_name( struct Pretty_print * const pp, - const char * const filename ) - { - if( filename && filename[0] && strcmp( filename, "-" ) != 0 ) - pp->name = filename; - else pp->name = pp->stdin_name; - pp->first_post = true; - } - -static inline void Pp_reset( struct Pretty_print * const pp ) - { if( pp->name && pp->name[0] ) pp->first_post = true; } -void Pp_show_msg( struct Pretty_print * const pp, const char * const msg ); - - -typedef uint32_t CRC32[256]; /* Table of CRCs of all 8-bit messages. */ - -extern CRC32 crc32; - -static inline void CRC32_init( void ) - { - unsigned n; - for( n = 0; n < 256; ++n ) - { - unsigned c = n; - int k; - for( k = 0; k < 8; ++k ) - { if( c & 1 ) c = 0xEDB88320U ^ ( c >> 1 ); else c >>= 1; } - crc32[n] = c; - } - } - -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 ) - { - int i; - for( i = 0; i < size; ++i ) - *crc = crc32[(*crc^buffer[i])&0xFF] ^ ( *crc >> 8 ); - } - - -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 */ - /* 4 version */ - /* 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 ); } - -static inline uint8_t Fh_version( const File_header data ) - { return data[4]; } - -static inline bool Fh_verify_version( const File_header data ) - { return ( data[4] <= 1 ); } - -static inline unsigned Fh_get_dictionary_size( const File_header data ) - { - unsigned sz = ( 1 << ( data[5] & 0x1F ) ); - if( sz > min_dictionary_size ) - sz -= ( sz / 16 ) * ( ( data[5] >> 5 ) & 7 ); - return sz; - } - -static inline bool Fh_set_dictionary_size( File_header data, const int sz ) - { - if( sz >= min_dictionary_size && sz <= max_dictionary_size ) - { - data[5] = real_bits( sz - 1 ); - if( sz > min_dictionary_size ) - { - const int base_size = 1 << data[5]; - const int 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 */ - /* 4-11 size of the uncompressed data */ - /* 12-19 member size including header and trailer */ - -enum { Ft_size = 20 }; - -static inline int Ft_versioned_size( const int version ) - { return ( ( version >= 1 ) ? 20 : 12 ); } - -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]; } - 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]; } - 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]; } - 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 LzmaDec.c */ -int readblock( const int fd, uint8_t * const buf, const int size ); -int writeblock( const int fd, const uint8_t * const buf, const int size ); - -/* defined in main.c */ -extern int verbosity; - -void show_error( const char * const msg, const int errcode, const bool help ); -void internal_error( const char * const msg ); - -#define SZ_OK 0 - -#define SZ_ERROR_READ 8 -#define SZ_ERROR_WRITE 9 |