#ifdef CHANGED
#include "copyright.h"
#include "system.h"
#include "consoledriver.h"
#include "synch.h"

static Semaphore *readAvail;
static Semaphore *writeDone;

static void ReadAvailHandler(void *arg) { (void) arg; readAvail->V(); }
static void WriteDoneHandler(void *arg) { (void) arg; writeDone->V(); }

ConsoleDriver::ConsoleDriver(const char *in, const char *out)
{
  readAvail = new Semaphore("read avail", 0);
  writeDone = new Semaphore("write done", 0);
  console = new Console (in, out, ReadAvailHandler, WriteDoneHandler, NULL);
}

ConsoleDriver::~ConsoleDriver()
{
  delete console;
  delete writeDone;
  delete readAvail;
}

void ConsoleDriver::PutChar( int ch)
{
    console->TX(ch);
	writeDone->P();	
}

int ConsoleDriver::GetChar()
{
	readAvail->P();
	int ch = console->RX();
	return ch;
}

void ConsoleDriver::PutString(const char s[MAX_STRING_SIZE])
{
  int i;
  for (i = 0; i < MAX_STRING_SIZE; i++){
    if (*(s+i) =='\0'){
      return;
    }
    PutChar(*(s+i));
  }
}

void ConsoleDriver::GetString(char * s, int n)
{
  int i;
  for ( i = 0; i < n - 1; i++){
    char c = GetChar();
    if ( c == '\0' || c == '\n' || c == EOF) {
      break;
    }
    *(s+i) =  c;
  }
  *(s+i) = '\0'; 
}

#endif // CHANGED