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Diffstat (limited to 'doc/lzip.info')
| -rw-r--r-- | doc/lzip.info | 46 |
1 files changed, 23 insertions, 23 deletions
diff --git a/doc/lzip.info b/doc/lzip.info index 4445d40..a1a2cbe 100644 --- a/doc/lzip.info +++ b/doc/lzip.info @@ -11,7 +11,7 @@ File: lzip.info, Node: Top, Next: Introduction, Up: (dir) Lzip Manual *********** -This manual is for Lzip (version 1.15-rc1, 1 August 2013). +This manual is for Lzip (version 1.15, 20 September 2013). * Menu: @@ -63,8 +63,8 @@ recovery capabilities, including error-checked merging of damaged copies of a file. Lzip 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. +which makes it safer than compressors returning ambiguous warning +values (like gzip) when it is used as a back end for tar or zutils. Lzip replaces every file given in the command line with a compressed version of itself, with the name "original_name.lz". Each compressed @@ -278,7 +278,7 @@ The format for running lzip is: `--verbose' Verbose mode. When compressing, show the compression ratio for each file - processed. A second -v shows the progress of compression. + processed. A second `-v' shows the progress of compression. When decompressing or testing, further -v's (up to 4) increase the verbosity level, showing status, compression ratio, dictionary size, trailer contents (CRC, data size, member size), and up to 6 @@ -520,8 +520,8 @@ integers representing the probability of the corresponding bit being 0. `literal_state' Value of the 3 most significant bits of the latest byte decoded. -`dis_state' - Coded value of length (real length - 2), with a maximum of 3. The +`len_state' + Coded value of length (length - 2), with a maximum of 3. The resulting value is in the range 0 to 3. @@ -561,7 +561,7 @@ bm_len state, pos_state after sequence 110 Name Indices Used when --------------------------------------------------------------------------- -bm_dis_slot dis_state, bit tree distance start +bm_dis_slot len_state, bit tree distance start bm_dis reverse bit tree after slots 4 to 13 bm_align reverse bit tree for distances >= 128, after fixed probability bits @@ -696,7 +696,7 @@ file with a member size of 32 MiB. File: lzip.info, Node: Problems, Next: Reference source code, Prev: Examples, Up: Top -7 Reporting Bugs +7 Reporting bugs **************** There are probably bugs in lzip. There are certainly errors and @@ -768,6 +768,7 @@ enum { pos_states = 1 << pos_state_bits, pos_state_mask = pos_states - 1, + len_states = 4, dis_slot_bits = 6, start_dis_model = 4, end_dis_model = 14, @@ -784,7 +785,6 @@ enum { max_len_symbols = len_low_symbols + len_mid_symbols + len_high_symbols, min_match_len = 2, // must be 2 - max_dis_states = 4, bit_model_move_bits = 5, bit_model_total_bits = 11, @@ -1011,7 +1011,7 @@ bool LZ_decoder::decode_member() // Returns false if error Bit_model bm_rep1[State::states]; Bit_model bm_rep2[State::states]; Bit_model bm_len[State::states][pos_states]; - Bit_model bm_dis_slot[max_dis_states][1<<dis_slot_bits]; + Bit_model bm_dis_slot[len_states][1<<dis_slot_bits]; Bit_model bm_dis[modeled_distances-end_dis_model]; Bit_model bm_align[dis_align_size]; Len_model match_len_model; @@ -1039,9 +1039,9 @@ bool LZ_decoder::decode_member() // Returns false if error else { int len; - if( rdec.decode_bit( bm_rep[state()] ) == 1 ) // 2nd bit + if( rdec.decode_bit( bm_rep[state()] ) != 0 ) // 2nd bit { - if( rdec.decode_bit( bm_rep0[state()] ) == 1 ) // 3rd bit + if( rdec.decode_bit( bm_rep0[state()] ) != 0 ) // 3rd bit { unsigned distance; if( rdec.decode_bit( bm_rep1[state()] ) == 0 ) // 4th bit @@ -1062,16 +1062,16 @@ bool LZ_decoder::decode_member() // Returns false if error if( rdec.decode_bit( bm_len[state()][pos_state] ) == 0 ) // 4th bit { state.set_short_rep(); put_byte( get_byte( rep0 ) ); continue; } } - len = min_match_len + rdec.decode_len( rep_len_model, pos_state ); state.set_rep(); + len = min_match_len + rdec.decode_len( rep_len_model, pos_state ); } else { rep3 = rep2; rep2 = rep1; rep1 = rep0; len = min_match_len + rdec.decode_len( match_len_model, pos_state ); - const int dis_state = std::min( len - min_match_len, max_dis_states - 1 ); + const int len_state = std::min( len - min_match_len, len_states - 1 ); const int dis_slot = - rdec.decode_tree( bm_dis_slot[dis_state], dis_slot_bits ); + rdec.decode_tree( bm_dis_slot[len_state], dis_slot_bits ); if( dis_slot < start_dis_model ) rep0 = dis_slot; else { @@ -1193,14 +1193,14 @@ Concept index Tag Table: Node: Top210 Node: Introduction1052 -Node: Algorithm5012 -Node: Invoking lzip7505 -Node: File format13181 -Node: Stream format15729 -Node: Examples25134 -Node: Problems27090 -Node: Reference source code27620 -Node: Concept index41135 +Node: Algorithm5031 +Node: Invoking lzip7524 +Node: File format13202 +Node: Stream format15750 +Node: Examples25150 +Node: Problems27106 +Node: Reference source code27636 +Node: Concept index41139 End Tag Table |