amir.c

#include <stdio.h>
#include <regex.h>
#include <string.h>
#include <stdlib.h>

/* The following is the size of a buffer to contain any error messages
 *    encountered when the regular expression is compiled. */

#define MAX_ERROR_MSG 0x1000

/*
 *   Match the string in "to_match" against the compiled regular
 *     expression in "r".
 *      */

static int match_regex (regex_t * r, const char * to_match)
{
  /* "P" is a pointer into the string which points to the end of the
   *        previous match. */
  const char * p = to_match;
  /* "N_matches" is the maximum number of matches allowed. */
  const int n_matches = 10;
  /* "M" contains the matches found. */
  regmatch_t m[n_matches];

  while (1) {
    int i = 0;
    int nomatch = regexec (r, p, n_matches, m, 0);
    if (nomatch) {
      printf ("No more matches.\n");
      return nomatch;
    }
    for (i = 0; i < n_matches; i++) {
      int start;
      int finish;
      if (m[i].rm_so == -1) {
        break;
      }
      start = m[i].rm_so + (p - to_match);
      finish = m[i].rm_eo + (p - to_match);
      if (i == 0) {
        printf ("$& is ");
      }
      else {
        printf ("$%d is ", i);
      }
      printf ("'%.*s' (bytes %d:%d)\n", (finish - start),
          to_match + start, start, finish);
    }
    p += m[0].rm_eo;
  }
  return 0;
}

/**
 * This is an enumeration of day.
 */
enum day {
  SATURDAY = 1,
  SUNDAY = 2,
  MONDAY = 3,
  TUESDAY = 4,
  WEDNESDAY = 5,
  THURSDAY = 6,
  FRIDAY = 7
};

/**
 * This is an enumeration level.
 * Each level represents a different field of study.
 */
enum level {
  UNDERGRADUATE = 1,
  GRADUATE = 2,
  DOCTORATE = 3
};

/**
 * Structure for the name of the instructor.
 */
typedef struct {
  char name[1024];
  char surname[1024];
} name_t;

/**
 * Structure for the location of each class.
 */
typedef struct {
  int time;
  day d;
  int classNumber;
  char faculty[];
} location_t;

/**
 * The main structure of the program.
 */
typedef struct {
  name_t name;
  char course[];
  int courseID;
  location_t loc[];
  int isCombined;
  level lvl;
} info_t;

// Global regular expression.
regex_t regex;

int main() {
  int status;
  status = regcomp(&regex, "[a-z0-9 :-]+", REG_ICASE | REG_EXTENDED);
  if (status) {
    printf("Regex Exception. Could not compile regex.\n");
    getchar();
    return 0;
  }

  FILE *input = NULL;
  input = fopen("info.csv", "r");
  if (input == NULL) {
    printf("IOStream exception. File status.\n");
    getchar();
    return 0;
  }
  char line[1024];
  int i = 0;
  do {
    regmatch_t match[50];
    //fscanf(input, "%[a-zA-Z0-9 :,-]s", line);
    fgets(line, 1000, input);
    if (feof(input)) {
      break;
    }
    printf("Reading line %s\n", line);
    match_regex(&regex, line);
  //strcat(substr, "\0");
  //i++;
  setbuf(input, NULL);
  } while (!feof(input));
  getchar();
  return 0;
}