char *readline(FILE *stream) {
    char *line = NULL;
    char buffer[BUFFER_LEN];
    int new_length;
    char *dest;
    int finished = 0;

    while (fgets(buffer, BUFFER_LEN, stream)) {
        if (buffer[strlen(buffer)-1] == '\n') {
            buffer[strlen(buffer)-1] = '\0';
        }
        if (strlen(buffer) < BUFFER_LEN-1) {
            finished = 1;
        }

#if DEBUG
    printf("Read: [%s] (%d)\n", buffer, strlen(buffer));
#endif

        if (line == NULL) {
            new_length = strlen(buffer) + 1;
            line = (char *) malloc(new_length);
            dest = line;
        } else {
            new_length = strlen(buffer) + 1;
            line = (char *) realloc(line, new_length);
            dest = line + strlen(line);
        }
        if (line == NULL) {
            return NULL;
        }

        strcpy(dest, buffer);

#if DEBUG
    printf("Line: {%s} (%d)\n", line, strlen(line));
#endif

        if (finished) {
            break;
        }
    }

#if DEBUG
    printf("Entire line: [[%s]]\n", line);
#endif

    return line;
}