/*
                                     I C M . H

    Generic definitions of the target operating systems.
*/

/*************************************************************************
    define _PROTOTYPES unconditionally
    define MAXCMDLEN:  the max command line length

    VOIDP, MARG, ARG macros: now superfluous, but kept for economy reasons
    (it's better to be lazy than tired)

    Undefine any unwanted _NO_PROTOTYPES or _NOPROTOTYPES
*/

#define _PROTOTYPES
#ifdef MSDOS
#    define MAXCMDLEN   100
#else
#    define MAXCMDLEN   500
#endif
#define ARG(x)      x
#define MARG        , ...
#define VOIDP       void*

#ifdef _NO_PROTOTYPES
#   undef _NO_PROTOTYPES
#endif

#ifdef _NOPROTOTYPES
#   undef _NOPROTOTYPES
#endif

/*************************************************************************
    P_CHECK value for implied function argument of system, chdir, etc
    P_NOCHECK when not checking
    P_CHECKMODE(int mode) is true when mode indicates checking
*/
#ifndef P_CHECK
#    define P_CHECK                 0
#endif
#ifndef P_NOCHECK
#    define P_NOCHECK		    2
#endif
#ifndef P_CHECKMODE
#    define P_CHECKMODE(x)	    (! ((x) & P_NOCHECK) )
#endif

/*************************************************************************
     directory objects
*/

#define O_FILE                      1
#define O_DIR                       2
#define O_SUBDIR                    4
#define O_ALL                       8

/*************************************************************************
     IS_ attributes
*/

#define IS_IFDIR                    1
#define IS_IFCHR                    2
#define IS_IFREG                    4
#define IS_IREAD                    8
#define IS_IWRITE                   16
#define IS_IEXEC                    32

/*************************************************************************
     file attributes
*/

#ifndef A_NORMAL
#    define A_NORMAL                0x00
#endif

#ifndef A_RDONLY
#    define A_RDONLY                0x01
#endif

#ifndef A_HIDDEN
#    define A_HIDDEN                0x02
#endif

#ifndef A_SYSTEM
#    define A_SYSTEM                0x04
#endif

#ifndef A_VOLID
#    define A_VOLID                 0x08
#endif

#ifndef A_SUBDIR
#    define A_SUBDIR                0x10
#endif

#ifndef A_ARCH
#    define A_ARCH                  0x20
#endif

/**************************************************************************
    MSDOS/UNIX specific macros
*/

#ifndef P_WAIT
#define P_WAIT                      0
#endif

#ifdef MSDOS
#    define DIRSEP                  '\\'
#    define DRIVESEP                ':'
#    define INT32                   signed long
#    define UNS32                   unsigned long
#    define READBINARY              "rb"
#    define WRITEBINARY             "wb"
#else
#    define near
#    define _MAX_PATH               260
#    define _MAX_DRIVE              2
#    define _MAX_DIR                _MAX_PATH
#    define _MAX_FNAME              _MAX_PATH
#    define _MAX_EXT                _MAX_PATH
#    define DIRSEP                  '/'
#    define DRIVESEP                0
#    define INT32                   signed int
#    define UNS32                   unsigned int
#    define READBINARY              "r"
#    define WRITEBINARY             "w"
#    define _execvp                 execvp
#endif

#define INT8  signed char
#define INT16 signed short
#define UNS16 unsigned short

#if !(defined(_CHAR_UNSIGNED) || defined(__CHAR_UNSIGNED__))
#error Compiler must use unsigned chars, use appropriate compiler flag.
#endif