/*
 * Test readLine
 *
 * First design decision: Interactive or non-interactive?
 * Suppose non-interactive.  "Give it a file".
 * Second design decision: How?
 *   Use #define to make it a constant.
 *   Pass it as an argument to main.
 *   Hard-code it.
 *   Somewhat interactive: prompt for it.
 */

#include <stdio.h>
#include <stdlib.h>
#include "readLine.h"

#define FILE_TO_READ "readLine.h"
#define MAX 6

int peek(FILE *infile) {
  int ch;
  ch = getc(infile);
  ungetc(ch, infile);
  return ch;
}

main(int argc, char *argv[])
{
  FILE *infile;
  char str[MAX];

  if (argc != 2) {
    fprintf(stderr, "Usage: testrl filename\n");
    exit(EXIT_FAILURE);
  }

  infile = fopen(argv[1], "r");
  if (infile == NULL) {
    fprintf(stderr, "File %s does not exist\n", argv[1]);
    fprintf(stderr, "Usage: testrl filename\n");
    exit(EXIT_FAILURE);
  }
 
  /* Read everything from the file and print it to the screen. */ 
  /* Stop when you hit EOF. */
/*
  while (!feof(infile)) {
 */
  while (peek(infile) != EOF) {
    if (readLine(infile, str, MAX))
      printf("Full line: ");
    else
      printf("Partial line: ");
    printf("'%s'\n", str);
  } /* while */
  fclose(infile);
  exit(EXIT_SUCCESS);
} /* main() */