lzip/lzlib
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Merging upstream version 0.8.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
Daniel Baumann 2025-02-20 16:21:01 +01:00
parent 00cee79f73
commit b3ac2b25ea
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
23 changed files with 1833 additions and 1235 deletions
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20
lzip.h
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@ -1,5 +1,5 @@
/* Lzlib - A compression library for lzip files
Copyright (C) 2009 Antonio Diaz Diaz.
Copyright (C) 2009, 2010 Antonio Diaz Diaz.
This library is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -12,7 +12,7 @@
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/>.
along with this library. If not, see <http://www.gnu.org/licenses/>.
As a special exception, you may use this file as part of a free
software library without restriction. Specifically, if other files
@ -58,6 +58,10 @@ public:
};
const int min_dictionary_bits = 12;
const int min_dictionary_size = 1 << min_dictionary_bits;
const int max_dictionary_bits = 29;
const int max_dictionary_size = 1 << max_dictionary_bits;
const int literal_context_bits = 3;
const int pos_state_bits = 2;
const int pos_states = 1 << pos_state_bits;
@ -80,6 +84,7 @@ const int max_len_symbols = len_low_symbols + len_mid_symbols + len_high_symbols
const int min_match_len = 2; // must be 2
const int max_match_len = min_match_len + max_len_symbols - 1; // 273
const int min_match_len_limit = 5;
const int max_dis_states = 4;
@ -152,6 +157,13 @@ struct File_header
return ( version <= 1 );
}
bool verify() const throw()
{
return ( verify_magic() && verify_version() &&
dictionary_size() >= min_dictionary_size &&
dictionary_size() <= max_dictionary_size );
}
static int real_bits( const int value ) throw()
{
int bits = 0;
@ -241,9 +253,9 @@ struct File_trailer
class Circular_buffer
{
protected:
const int buffer_size;
const int buffer_size; // capacity == buffer_size - 1
uint8_t * const buffer;
int get;
int get; // buffer is empty when get == put
int put;
void reset() throw() { get = 0; put = 0; }