lha_macro.h

[詳解]

/* ------------------------------------------------------------------------ */
/* LHa for UNIX    Archiver Driver  macro define                            */
/*                                                                          */
/*      Modified                Nobutaka Watazaki                           */
/*                                                                          */
/*  Ver. 1.14   Soruce All chagned              1995.01.14  N.Watazaki      */
/* ------------------------------------------------------------------------ */
#ifndef _LHA_MACRO_H
#define _LHA_MACRO_H
 
enum {
    HEADER_LEVEL0,
    HEADER_LEVEL1,
    HEADER_LEVEL2,
    HEADER_LEVEL3,
};
#define is_directory(statp)     (((statp)->st_mode & S_IFMT) == S_IFDIR)
 
#define NC          (UCHAR_MAX + MAXMATCH + 2 - THRESHOLD)
#define MAX_DICBIT          16                  /* lh7 use 16bits           */
#define MAXMATCH            256                 /* formerly F (not more than UCHAR_MAX + 1) */
#define THRESHOLD           3                   /* choose optimal value     */
 
/* from huf.c */
/* alphabet = {0, 1, 2, ..., NC - 1} */
#define CBIT                9   /* $¥lfloor ¥log_2 NC ¥rfloor + 1$ */
#endif