common.c

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#include <stdlib.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <wchar.h>
 
#include <termios.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
 
#include "common.h"
#include "definitions.h"
 
const wchar_t chSq = 0x2705; /* checkSquare ✅ */
const wchar_t crSq = 0x274E; /* crossSquare ❎ */
const wchar_t eSq = 0x2B1C; /* emptySquare ⬜ */
const wchar_t fSq = 0x2B1B; /* fullSquare ⬛ */
 
const int timeLimit = 1000;
 
void sound(){
  wprintf(L"\a");
}
 
void clearCLI(void){
 
  int res;
 
  res = system("clear");
  if (res == 1){
    clearCLI();
    exit(EXIT_FAILURE);
  }
}
 
void exitFailure(void){
  clearCLI();
  exit(EXIT_FAILURE);
}
 
void delayTimer(int time){
  sleep(time);
}
 
struct winsize w;
 
int intLen(int value){
 
  int length = 0;
 
  if (value != 0){
    while(value!=0){
       value = value/10;
       length++;
    }
  }
 
  return (length==0)?1:length;
 
}
 
void widthSpacing(int filledWidth){
 
  int i;
 
  ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
  for(i=0; i<(w.ws_col-filledWidth)/2; i++)
    wprintf(L" ");
}
 
void printCentered(wchar_t *text){
  widthSpacing(wcslen(text));
  wprintf(L"%ls\r\n", text);
}
 
void heightSpacing(int filledHeight){
 
  int i;
 
  ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
  for(i=0; i<(w.ws_row-filledHeight)/2; i++)
    wprintf(L"\r\n");
}
 
static struct termios orig_term;
 
void u_cleanup(void){
  tcsetattr(0, TCSANOW, &orig_term);
}
 
int u_kbhit(void){
 
  struct termios t;
  fd_set rfd;
  struct timeval to;
  static int first_hit=0;
 
  if(first_hit==0){
    if(tcgetattr(0, &t)!=0)
      exit(0);
    orig_term=t;
    cfmakeraw(&t);
    if(tcsetattr(0, TCSANOW, &t)!=0)
      exit(0);
    atexit(u_cleanup);
    first_hit=1;
  }
 
  FD_ZERO(&rfd);
  FD_SET(0, &rfd);
  to.tv_sec=0;
  to.tv_usec=0;
  if(select(1, &rfd, NULL, NULL, &to)==1)
    return 1;
  return 0;
}
 
int u_getchar(void){
 
  int ret;
  unsigned char buf;
 
  if(read(0, &buf, 1)!=1)
    ret=0;
  else
    ret=buf;
  return ret;
}
 
int waitUserInput(void){
 
  int key=0;
 
  while(1){
    if(u_kbhit()){
      key=u_getchar();
      if (key == CTRL_C)
        exitFailure();
      return key;
    }
    usleep(NSEC_TO_SLEEP);
  }
  exitFailure();
}
 
void waitUser(void){
  int key=2;
  while(key!=CARRIAGE_RETURN){
    key = waitUserInput();
  }
}