replaces comments with spaces

remove_comments.c

void json_remove_comments(char *string, const char *start_token, const char *end_token) {
    int in_string = 0, escaped = 0, i;
    char *ptr = NULL, c;
    size_t start_token_len = strlen(start_token);
    size_t end_token_len = strlen(end_token);
    if (start_token_len == 0 || end_token_len == 0)
    	return;
    while ((c = *string) != '\0') {
        if (c == '\\' && !escaped) {
            escaped = 1;
            string++;
            continue;
        } else if (c == '\"' && !escaped) {
            in_string = !in_string;
        } else if (strncmp(string, start_token, start_token_len) == 0 && !in_string) {
			for(i = 0; i < start_token_len; i++) string[i] = ' ';
        	string = string + start_token_len;
            ptr = strstr(string, end_token);
            if (!ptr) {
                return; /* error? */
            }
            for (i = 0; i < (ptr - string) + end_token_len; i++)
                string[i] = ' ';
          	string = ptr + end_token_len;
        }
        escaped = 0;
        string++;
    }
}