c_cpp/coverages/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 #ifdef __cplusplus
   8 extern "C" {
   9 #endif
  10
  11 #include <stdio.h>
  12 #include <termios.h>
  13 #include <unistd.h>
  14
  15 static inline int mygetch ( void ) {
  16   int ch;
  17   struct termios oldt, newt;
  18
  19   tcgetattr( STDIN_FILENO, &oldt );
  20   newt = oldt;
  21   newt.c_lflag &= ~( ICANON | ECHO );
  22   tcsetattr( STDIN_FILENO, TCSANOW, &newt );
  23   ch = getchar();
  24   tcsetattr( STDIN_FILENO, TCSANOW, &oldt );
  25
  26   return ch;
  27 }
  28
  29 static inline int pressAnyKey (void) {
  30   if ( !isatty(STDIN_FILENO) )
  31     return -2;  // # define EOF (-1) in <stdio.h>
  32 // other errno in /usr/include/asm-generic/errno-base.h
  33   fputs("\nPress any key to continue ... ", stderr);
  34   //return mygetch();
  35   int ch = mygetch();
  36   fputs("\n", stderr);
  37   return ch;
  38 }
  39
  40 #ifdef __cplusplus
  41 }
  42 #endif
  43
  44 #endif /* getch.h */