Limitations with FileToStr() and StrToFile()

[vikasb2]

Does anybody know about the limitations with StrToFile() and FileToStr() functions, if any?

I am specially interested in knowing that what is the maximum size of a file these functions can read/write?

An early response will help.

Thanks
Vikas

 

[Mike Lewis]

Hi Vikas,

I would assume that maximum size that they can handle is 16,777,184. That's the limit on a string variable.

Mike


Mike Lewis
Edinburgh, Scotland

http://www.ml-consult.demon.co.uk

 

[vikasb2]

Thanks Lewis for a quick reply.

That I read in MSDN. But I can also do this:
replace alias.memofield with filetostr(<file>)

Now Will this work if the <file> size is 80mb or so?

Vikas

 

[ChrisRChamberlain]

sakivvikas

FILETOSTR() writes the whole file to RAM and not to a temp folder on a hard disk.

The problem you will get if a user has a low specification machine then the user may run out of resources.

FAQ184-2483 - the answer to getting answered.​

Chris

http://www.pdfcommander.com

http://www.pdfcommander.co.uk

 

[vikasb2]

Well Chris, With virtual memory and swapping in place RAM can go to sizes more than physically installed on the machine.

Anyways the question is whether filetostr() can handle files of sizes like 80mb or 2gb types.

Vikas

 

[Mike Lewis]

Vikas,

Replacing into a memo field won't make any difference. You will still be up against the same limit. Also, the overall maximum for a memo file (FPT file) is 2 GB.

If your text is really so big, maybe you need some other way of managing it.

Mike


Mike Lewis
Edinburgh, Scotland

http://www.ml-consult.demon.co.uk

 

[vikasb2]

Thanks everybody for providing various views to the problem.

Though I can use low-level file functions but I thought if I use filetostr() it would be easier.

The text I am dealing currently is not that big but still the context, I am writing code for, can get text files so big hence the entire discussion.

Thanks all of you.

This is really nice to talk to VFP guys - its like brotherhood.

Vikas

 

[Mike Gagnon]

The text I am dealing currently is not that big but still the context, I am writing code for, can get text files so big hence the entire discussion.

I would suggest that you create a file parsing procedure that includes a file splitting function at 64,000 lines, that way you can handle big files.


Mike Gagnon

If you want to get the best response to a question, please check out FAQ184-2483 first.