#define _POSIX_C_SOURCE 200809L
#define BUFFER_SIZE 1024
#define STRING_BUFFER_SIZE 32

#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>

// Helps to match a string (excludes blanks and special characters)
int is_char(char c)
{
    return c != '\0' && !isblank(c) && c != ':' && c != '=' && c != '#';
}

int main(int argc, char **argv)
{
    // Open file
    FILE *stream = fopen(argv[1], "r");
    if (stream == 0)
        errx(1, "Could not open file");

    // Allocate buffer
    size_t buf_size = BUFFER_SIZE;
    char *buf = malloc(sizeof(char) * buf_size);
    if (buf == NULL)
        errx(1, "Could not allocate more memory");

    // Read
    ssize_t nread;
    while ((nread = getline(&buf, &buf_size, stream)) != -1)
    {
        int i = 0;
        // Skip blanks
        while (i < nread && isblank(buf[i]))
            i++;

        // Read target name
        size_t str_buf_size = STRING_BUFFER_SIZE;
        char *str_buf = malloc(sizeof(char) * str_buf_size);
        while (is_char(buf[i]))
        {
        }

        // Read deps
    }
}