khanat-code-old/code/nel/samples/net/chat/kbhit.cpp

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2010-05-06 00:08:41 +00:00
#ifdef __GNUC__
#include "kbhit.h"
#include <termios.h>
#include <unistd.h> // for read()
#include <stdio.h>
static struct termios initial_settings, new_settings;
static int peek_character = -1;
void init_keyboard()
{
tcgetattr(STDIN_FILENO,&initial_settings);
new_settings = initial_settings;
new_settings.c_lflag &= ~ICANON;
new_settings.c_lflag &= ~ECHO;
new_settings.c_lflag &= ~ISIG;
new_settings.c_cc[VMIN] = 1;
new_settings.c_cc[VTIME] = 0;
tcsetattr(STDIN_FILENO, TCSANOW, &new_settings);
}
void close_keyboard()
{
tcsetattr(STDIN_FILENO, TCSANOW, &initial_settings);
}
int kbhit()
{
unsigned char ch;
int nread;
if (peek_character != -1) return 1;
new_settings.c_cc[VMIN]=0;
tcsetattr(STDIN_FILENO, TCSANOW, &new_settings);
nread = read(STDIN_FILENO,&ch,1);
new_settings.c_cc[VMIN]=1;
tcsetattr(STDIN_FILENO, TCSANOW, &new_settings);
if(nread == 1)
{
peek_character = ch;
return 1;
}
return 0;
}
int getch()
{
char ch;
if(peek_character != -1)
{
ch = peek_character;
peek_character = -1;
return ch;
}
read(STDIN_FILENO,&ch,1);
return ch;
}
#endif // __GNUC__