amir.c

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

/**
* 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);
        status = regexec(&regex, line, 50, match, 0);
        if (status) {
            char errbuf[1024];
            regerror(status, &regex, errbuf, sizeof(errbuf));
            printf("REGEX exception. %s.\n", errbuf);
            getchar();
            return 0;
        }
        char substr[20];
        memset(substr, 0, 20);
        printf("%d : %d\n", match[i].rm_so, match[i].rm_eo);
        strncpy(substr, line + match[i].rm_so, (size_t) match[i].rm_eo);
        //strcat(substr, "\0");
        printf("%s\n", substr);
        //i++;
        setbuf(input, NULL);
    } while (!feof(input));
    getchar();
    return 0;
}