gen.h

Go to the documentation of this file.

/*
 */
/*
    Copyright (C) 2000 PARAPET partners
    Copyright (C) 2000- 2001, IRSL
    SPDX-License-Identifier: Apache-2.0 AND License-ref-PARAPET-license
    See STIR/LICENSE.txt for details
*/
#include <stdio.h>
 
/* Change November 1997: added next 3 lines */
#ifdef __cplusplus
extern "C"
{
#endif
 
#ifdef VAX
  /* The VAX library does not have getch. An implemenation is provided in gen.c
    getch reads a character from the keyboard without waiting for a
          carriage return. You can use it for detecting arrowkeys
          in combination with the KB_... macro's.
  */
  extern char getch(void);
/* Macro's for using the arrowkeys. Use in the following way:
        char ch;
        ch = getch();
        if (KB_DIRECTION(ch))
        { // ch is now the last character of the escape code
          switch(ch)
          { KB_UPARROW: ...
            ...
          }
        }
        else ...
         // ch is not changed, or the second character in the escape code
  Note: The following are ANSI escape sequences
*/
#  define KB_DIRECTION(c) (c == 0x1b && getch() == 0x5b && (c = getch()) >= 0x41 && c <= 0x44)
#  define KB_UPARROW 0x41
#  define KB_DNARROW 0x42
#  define KB_RTARROW 0x43
#  define KB_LTARROW 0x44
#endif /* VAX */
 
#if (defined(_WIN32) || defined(WIN32)) && !defined(MSDOS)
#  define MSDOS
#endif
 
#ifdef MSDOS
  /* Change 05/02/98 */
#  ifdef __GNUC__
  /* TODO */
#    define getch() getchar()
#  else
#    include <conio.h> /* for getch */
#    define getch _getch
#  endif
 
/* Macro's for using the arrowkeys. For explanation see above.
  Replace "escape code" with "extended charcode"
*/
#  define KB_DIRECTION(c) (c == '\0' && ((c = (char)getch()) == 0x48 || c == 0x4b || c == 0x4d || c == 0x50))
#  define KB_UPARROW 0x48
#  define KB_DNARROW 0x50
#  define KB_RTARROW 0x4d
#  define KB_LTARROW 0x4b
#endif /* MSDOS */
 
#if !defined(VAX) && !defined(MSDOS) && !defined(__MSL__)
#  include <curses.h> /* for getch */
  /* Change November 1997: added 7 lines
     work-around a 'bug'. screen.h includes curses.h which #defines some
     symbols which conflict in other C++ includes
  */
 
#  ifdef clear
#    undef clear
#  endif
#  ifdef erase
#    undef erase
#  endif
 
/* Macro's for using the arrowkeys. For explanation see above.
 */
#  define KB_DIRECTION(c) (c == 0x1b && getch() == 0x5b && (c = getch()) >= 0x41 && c <= 0x44)
#  define KB_UPARROW 0x41
#  define KB_DNARROW 0x42
#  define KB_RTARROW 0x43
#  define KB_LTARROW 0x44
#endif /*ultrix*/
 
#ifdef SC_XWINDOWS
#  undef KB_DIRECTION
#  undef KB_UPARROW
#  undef KB_DNARROW
#  undef KB_RTARROW
#  undef KB_LTARROW
/* the next one is probably wrong */
#  define KB_DIRECTION(c) (c == 0x1b && getch() == 0x5b && (c = getch()) >= 0x41 && c <= 0x44)
#  define KB_UPARROW XK_Up
#  define KB_DNARROW XK_Down
#  define KB_RTARROW XK_Right
#  define KB_LTARROW XK_Left
#endif
 
#include <stdlib.h>
 
#ifndef Min
#  define Min(x, y) ((x) < (y) ? (x) : (y))
#endif
#ifndef Max
#  define Max(x, y) ((x) > (y) ? (x) : (y))
#endif
 
  /**************************************************************************
 
  ***************************************************************************/
  extern size_t fread_check(char str[], void* buffer, size_t size, FILE* infile);
  extern size_t fwrite_check(char str[], void* buffer, size_t size, FILE* outfile);
  extern void fseek_check(char str[], FILE* file, long offset, int pos);
 
  extern int asknr(char str[], int minv, int maxv, int def);
 
  extern void message(char* fmt, ...);
  extern void error(char* fmt, ...);
 
/* Change November 1997: added next 3 lines (end of extern "C") */
#ifdef __cplusplus
}
#endif