c_cpp/readscorr/getch.h

   1 // From http://faq.cprogramming.com/cgi-bin/smartfaq.cgi?answer=1042856625&id=1043284385
   2 // Edited by Hu Xuesong @ Thu Apr 28 CST 2011
   3
   4 #ifndef _GA_GETCH_H
   5 #define _GA_GETCH_H
   6
   7 #include <stdio.h>
   8 #include <termios.h>
   9 #include <unistd.h>
  10
  11 inline int mygetch ( void ) {
  12   int ch;
  13   struct termios oldt, newt;
  14
  15   tcgetattr( STDIN_FILENO, &oldt );
  16   newt = oldt;
  17   newt.c_lflag &= ~( ICANON | ECHO );
  18   tcsetattr( STDIN_FILENO, TCSANOW, &newt );
  19   ch = getchar();
  20   tcsetattr( STDIN_FILENO, TCSANOW, &oldt );
  21
  22   return ch;
  23 }
  24
  25 int pressAnyKey (void) {
  26   if ( !isatty(STDIN_FILENO) )
  27     return -2;  // # define EOF (-1) in <stdio.h>
  28 // other errno in /usr/include/asm-generic/errno-base.h
  29   fputs("\nPress any key to continue ... ", stderr);
  30   //return mygetch();
  31   int ch = mygetch();
  32   fputs("\n", stderr);
  33   return ch;
  34 }
  35
  36 #endif /* getch.h */
  37