advpack: Implement LaunchINFSectionEx [resend]

[Alexandre Julliard]

"James Hawkins" <truiken at gmail.com> writes:

> +static LPWSTR get_parameter(LPWSTR parameters, WCHAR separator, DWORD index)
> +{
> +    LPWSTR param = NULL, ptr = parameters;
> +    DWORD i = 0;
> +
> +    while (*parameters && i < index)
> +    {
> +        if (*parameters == separator)
> +        {
> +            ptr = parameters;
> +            i++;
> +        }
> +
> +        parameters++;
> +    }
> +
> +    if (!*parameters || *parameters == separator)
> +        return NULL;
> +
> +    param = HeapAlloc(GetProcessHeap(), 0, (parameters - ptr) * sizeof(WCHAR));
> +    lstrcpynW(param, parameters, parameters - ptr);
> +
> +    return param;
> +}

That's a very inefficient way of splitting a string. It's much better
to allocate a copy of the whole string and go through it just once,
inserting nulls to separate the tokens.

-- 
Alexandre Julliard
julliard at winehq.org