On 09/08/2011 02:38 p.m., MB Software Solutions, LLC wrote:
> On 8/9/2011 1:23 PM, John Weller wrote:
>> I think that is a much better idea! You have more control and it is only
>> reading a line at a time so there will not be any memory issues (famous last
>> words :-) )
> The last time I wrote any LLFF code, it was in BASIC and/or PASCAL over
> 15 years ago! lol
>
> Looks like I'll use FOPEN to get the handle and FREAD to read each line.
> How do I determine the number of lines (without using ALINES)...would
> be it the number of bytes returned from FREAD divided by the record
> length? Also, would I use FSEEK to increment along the file inside a
> loop like so?
>
> liRecLength = 550
> liHandle = fopen("myfile.txt")
> do while not feof(liHandle)
> lcLine = fread(liHandle,liRecLength)
> * now do whatever processing on the lcLine variable
> enddo
>
>
> Does that look about right? tia!
You might also try :
create cursor MyCursor (fileContents m)
append blank
append memo fileContents from 'myfile.txt' overwrite
set memowidth to 8192 && if your file has lines bigger than 8192 chars
you are screwed!
for LineNo = 1 to MemLines(filecontents)
LineBeingProcessed = MLINE(fileContents, /LineNo)/
&& Process the line
endfor
If this last for loop is too slow check out _MLINE in your VFP help
which is a much faster (less readable) method.
I always find it easier this way than with fread()
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