[PATCH] vbscript: Implemented String

[Nikolay Sivov]

On 10/23/2014 21:07, Shuai Meng wrote:
> Thanks for commenting.
>
> 2014-10-21 0:20 GMT+08:00 Nikolay Sivov <bunglehead at gmail.com 
> <mailto:bunglehead at gmail.com>>:
>
>     On 10/20/2014 19:58, Shuai Meng wrote:
>>     Thank you very much for commenting on this patch.
>>
>>     2014-10-20 0:06 GMT+08:00 Nikolay Sivov <bunglehead at gmail.com
>>     <mailto:bunglehead at gmail.com>>:
>>
>>             +    str = SysAllocStringLen(NULL, 1023);
>>             +    newstr = SysAllocStringLen(NULL, 1023);
>>
>>         Where this length comes from?
>>         Well, I tested String on windows xp, and found that 1023 was
>>         the limit, when given a number bigger than that, the output
>>         kept the length of 1023.
>>
>     Can you add this too as a test? In some compact way if possible.
>
> I tried again and I found that maybe you were right. The number of 
> 1023 was got like this: I wrote vbscript with a common text editor on 
> xp, and save it as xx.vbs, then double clicked it. I used this method 
> and found that MsgBox String(1024, 65) only printed "a...(the length 
> is 1023)....a".
> Tragedy is today I write MsgBox Len(String(1024, 65)), and it prints 
> 1024! It's the same with the other numbers greater than 1023!   So I 
>  was cheated yesterday. The true limit may be 32768 * 16384 * 1.25， 
> but I am not sure. I need to know the exact limit of the length of the 
> string subtype, however experiments show difference with the documents 
> of microsoft which claims the limit is about 2 billion.
In that case we don't care about exact limit if any. Just allocate 
what's requested and fail with proper error code if allocation failed.


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