#include <iostream>

#include "user.h"
#include <iostream>
#include <termios.h>
#include <string>
#include <unistd.h>
#include <fcntl.h>

using namespace std;

void
setEcho(bool echo) {
struct termios t;

//get the current settings
tcgetattr(STDIN_FILENO, &t);

//toggle echo
if(echo)
t.c_lflag = t.c_lflag | ECHO;
else
t.c_lflag = t.c_lflag & ~ECHO;

//set the settings
tcsetattr(STDIN_FILENO, TCSANOW, &t);
}

void
setBlocking(bool block) {
struct termios t;

//get the current settings
tcgetattr(STDIN_FILENO, &t);

//toggle blocking
if(block)
t.c_lflag = t.c_lflag | ICANON;
else
t.c_lflag = t.c_lflag & ~ICANON;

//set the settings
tcsetattr(STDIN_FILENO, TCSANOW, &t);
}

bool
hasInput() {
fd_set fs;
timeval tv;
int i;

//set up the fd set
FD_SET(STDIN_FILENO, &fs);

//set up the timespec
tv.tv_sec = 0;
tv.tv_usec = 1;

//select
i=select(STDIN_FILENO + 1, &fs, NULL, NULL, &tv);

//0 no input available
//-1 error
if(i==0 || i==-1) {
return false;
}

//there is input
return true;

}

void
clearStdin() {
while(hasInput())
cin.get();
}