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/*

 * shdspout.c -- show display output in readable format

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <time.h>

#include <curses.h>

#define LINE_SIZE       200

#define MAX_TOKENS      20

int splitLine(char *line, char *tokens[], int maxTokens) {

  int n;

  char *p;

  n = 0;

  p = strtok(line, ", ");

  while (p != NULL) {

    if (n < maxTokens) {

      tokens[n] = p;

      n++;

    }

    p = strtok(NULL, ", ");

  }

  return n;

}

int main(int argc, char *argv[]) {

  FILE *inFile;

  char line[LINE_SIZE];

  char *tokens[MAX_TOKENS];

  int n;

  int x, y;

  unsigned char c;

  struct timespec delay;

  if (argc != 2) {

    printf("usage: %s <display output file>\n", argv[0]);

    exit(1);

  }

  inFile = fopen(argv[1], "r");

  if (inFile == NULL) {

    printf("error: cannot open input file '%s'\n", argv[1]);

    exit(1);

  }

  initscr();

  cbreak();

  noecho();

  nonl();

  intrflush(stdscr, FALSE);

  keypad(stdscr, TRUE);

  while (fgets(line, LINE_SIZE, inFile) != NULL) {

    n = splitLine(line, tokens, MAX_TOKENS);

    if (n != 12) {

      continue;

    }

    y = strtoul(tokens[2], NULL, 0);

    x = strtoul(tokens[5], NULL, 0);

    c = strtoul(tokens[11], NULL, 0);

    mvaddch(y, x, c);

    refresh();

    delay.tv_sec = 0;

    delay.tv_nsec = 100000000;

    nanosleep(&delay, NULL);

  }

  do {

    n = getch();

  } while (n == ERR);

  endwin();

  fclose(inFile);

  return 0;

}