This looks very cool, Darren....but some of these files are well over 2GB
so I'm using the FOpenEx/FReadEx/FCloseEx commands from VFP2C32.FLL.
ALINES would overflow (I think). I'm not in the office now but will try
tomorrow to verify.
Thanks,
--Mike
On Thu, January 2, 2014 6:32 pm, Darren wrote:
> Some very simple code for regexp. Easy to change the pattern and specify
> the limits of each field and very quickly determine what is correct and
> what is not. Powerful !!
>
> ACTIVATE SCREEN
> CLEAR
>
>
> TEXT TO lcFile NOSHOW
> "123","Anna","Manchester United","London, UK",""
> "1234","Ann","Gas House Gorillas","New York, NY",""
> "12345","Anna Maria","Brooklyn Dodgers","Brooklyn, NY","This is a really
> long string" "678901","Santa Anna","New York Rangers","New York City,
> NY",""
> ENDTEXT
>
>
> lnLines = ALINES(laLines, m.lcFile)
>
> *-----------------------------------------------
> loRegExp = CREATEOBJECT("vbscript.regexp") loRegExp.global = .T.
>
> loRegExp.pattern = '"([^"]*)"'
>
> FOR EACH lcLine IN laLines
>
>
> loResults = loRegExp.execute(m.lcLine)
>
> ? "Fields " + transform(m.loResults.count)
>
>
> FOR lnFld = 0 TO m.loResults.count - 1 && zero based
> ? " (" + PADL(m.loResults.item(m.lnFld).length - 2, 3, "0") + ") - " +
> m.loResults.item(m.lnFld).submatches(0) && -2 for the quotes around each
> element ENDFOR
>
>
> ?
>
>
> ENDFOR
>
>
>
> -----Original Message-----
> From: ProfoxTech [mailto:[email protected]] On Behalf Of MB
> Software Solutions General Account
> Sent: Friday, 3 January 2014 8:26 AM
> To: [email protected]
> Subject: Determining maximum field widths in text file
>
>
> VFP9SP2
>
>
> Goal: to determine maximum field widths for entire input/text file.
>
>
> Input file is Sample.txt. It contains 'n' fields, let's say 5 for this
> example: Field1, Field2, Field3, Field4, Field5.
>
>
> Example of file:
> "123","Anna","Manchester United","London, UK",""
> "1234","Ann","Gas House Gorillas","New York, NY",""
> "12345","Anna Maria","Brooklyn Dodgers","Brooklyn, NY","This is a really
> long string" "678901","Santa Anna","New York Rangers","New York City,
> NY",""
>
>
> * Notice some commas may appear INSIDE fields.
>
>
> I want my output array to basically have the maximum widths for each
> field. I'm trying to build an import tool and this will help me when the
> provider sends me data without field layouts. I figure I'll grab the line
> with FGetsEx and then analyze each field from there. Off the top of my
> head I can create a stub cursor with each field type being Memo, import
> the line read into that cursor and then cycle through each and calculate
> the max via LEN(ALLTRIM(Fieldn)), but that seems like an awfully big
> hammer (in other words, it seems very 'kludgey').
>
> Mind you, it's not ideal, but it's something to give me an idea of where
> my truncations are occurring. I'm importing into a MySQL database and
> getting a ton of truncations. I want to see where he's sending me
> something different than officially expected. The SHOW WARNINGS command
> in MySQL isn't the solution either. I just want to know what fields have
> longer data values than he's declaring.
>
> tia, --Mike
>
>
>
>
[excessive quoting removed by server]
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