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/* Lunzip - Decompressor for the lzip format
Copyright (C) 2010-2018 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 2 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 INT64_MAX
#define INT64_MAX 0x7FFFFFFFFFFFFFFFLL
#endif
struct Block
{
long long pos, size; /* pos + size <= INT64_MAX */
};
static inline void init_block( struct Block * const b,
const long long p, const long long s )
{ b->pos = p; b->size = s; }
static inline long long block_end( const struct Block b )
{ return b.pos + b.size; }
struct Member
{
struct Block dblock, mblock; /* data block, member block */
unsigned dictionary_size;
};
static inline void init_member( struct Member * const m,
const long long dp, const long long ds,
const long long mp, const long long ms,
const unsigned dict_size )
{ init_block( &m->dblock, dp, ds ); init_block( &m->mblock, mp, ms );
m->dictionary_size = dict_size; }
struct File_index
{
struct Member * member_vector;
char * error;
long long isize;
long members;
int error_size;
int retval;
};
bool Fi_init( struct File_index * const fi, const int infd,
const bool ignore_trailing, const bool loose_trailing );
void Fi_free( struct File_index * const fi );
static inline long long Fi_udata_size( const struct File_index * const fi )
{
if( fi->members <= 0 ) return 0;
return block_end( fi->member_vector[fi->members-1].dblock );
}
static inline long long Fi_cdata_size( const struct File_index * const fi )
{
if( fi->members <= 0 ) return 0;
return block_end( fi->member_vector[fi->members-1].mblock );
}
/* total size including trailing data (if any) */
static inline long long Fi_file_size( const struct File_index * const fi )
{ if( fi->isize >= 0 ) return fi->isize; else return 0; }
static inline const struct Block * Fi_dblock( const struct File_index * const fi,
const long i )
{ return &fi->member_vector[i].dblock; }
static inline const struct Block * Fi_mblock( const struct File_index * const fi,
const long i )
{ return &fi->member_vector[i].mblock; }
static inline unsigned Fi_dictionary_size( const struct File_index * const fi,
const long i )
{ return fi->member_vector[i].dictionary_size; }
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