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authorDaniel Baumann <mail@daniel-baumann.ch>2015-11-07 05:00:44 +0000
committerDaniel Baumann <mail@daniel-baumann.ch>2015-11-07 05:00:44 +0000
commit9abf3b0a7bda1563cc5eb6537459e9486b622af7 (patch)
tree99db223dbca09d5dac8e06a1f46a4c541fb5e9ba /lunzip.h
parentAdding debian version 1.2-4. (diff)
downloadlunzip-9abf3b0a7bda1563cc5eb6537459e9486b622af7.tar.xz
lunzip-9abf3b0a7bda1563cc5eb6537459e9486b622af7.zip
Merging upstream version 1.3~rc1.
Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
Diffstat (limited to 'lunzip.h')
-rw-r--r--lunzip.h263
1 files changed, 0 insertions, 263 deletions
diff --git a/lunzip.h b/lunzip.h
deleted file mode 100644
index 4437ec6..0000000
--- a/lunzip.h
+++ /dev/null
@@ -1,263 +0,0 @@
-/* Lunzip - Decompressor for lzip files
- Copyright (C) 2010, 2011, 2012, 2013 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
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- 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. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#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 { states = 12 };
-
-static inline bool St_is_char( const State st ) { return st < 7; }
-
-static inline State St_set_char( const State st )
- {
- static const State next[states] = { 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 4, 5 };
- return next[st];
- }
-
-static inline State St_set_match( const State st )
- { return ( ( st < 7 ) ? 7 : 10 ); }
-
-static inline State St_set_rep( const State st )
- { return ( ( st < 7 ) ? 8 : 11 ); }
-
-static inline State St_set_short_rep( const State st )
- { return ( ( st < 7 ) ? 9 : 11 ); }
-
-
-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,
- pos_states = 1 << pos_state_bits,
- pos_state_mask = pos_states - 1,
-
- dis_slot_bits = 6,
- start_dis_model = 4,
- end_dis_model = 14,
- modeled_distances = 1 << (end_dis_model / 2),
- dis_align_bits = 4,
- dis_align_size = 1 << dis_align_bits,
-
- 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,
-
- max_dis_states = 4 };
-
-static inline int get_dis_state( const int len )
- { return min( len - min_match_len, max_dis_states - 1 ); }
-
-static inline int get_lit_state( const uint8_t prev_byte )
- { return ( prev_byte >> ( 8 - literal_context_bits ) ); }
-
-
-enum { bit_model_move_bits = 5,
- bit_model_total_bits = 11,
- bit_model_total = 1 << bit_model_total_bits };
-
-typedef int Bit_model;
-
-static inline void Bm_init( Bit_model * const probability )
- { *probability = bit_model_total / 2; }
-
-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 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 * 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 )
- {
- 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 int 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 );
- 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 main.c */
-void cleanup_and_fail( const int retval );
-void show_error( const char * const msg, const int errcode, const bool help );