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Removing all tags from a document
Message
From
25/04/2001 10:59:19
 
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Miscellaneous
Thread ID:
00499511
Message ID:
00499595
Views:
13
>
>LOCAL lcFile, lnStart, lnStop
>lcFile =FileToStr('yahoo.txt')
>lnStart = 1
>lnStop = 0
>
>DO WHILE lnStart > 0
>	lnStart = AT('<', lcFile)
>	lnStop = AT('>', lcFile)
>	IF lnStart = 1
>		lcFile = SubStr(lcFile, lnStop +1)
>	ELSE
>		lcFile = Left(lcFile, lnStart -1) + SubStr(lcFile, lnStop +1)
>	ENDIF
>ENDDO
>
>=StrToFile(lcFile, 'yahoo2.txt')
>
This works. However, I need to take care of a specific condition where I may have an end of tag but no beginning of tag such as when using the < syntax to show a beginning of tag character but not being interpreted.

So, it means, we have to start the search of the lnStop after the occurence of lnStart.

The following is a new version:
FUNCTION ExtractTag
PARAMETER tcContent
LOCAL lnStart,lnStop
lnStart=1
lnStop=0
DO WHILE lnStart>0
   lnStart=AT('<',tcContent)
   lnStop=AT('>',SUBSTR(tcContent,lnStart))
   IF lnStart=0
      EXIT
   ENDIF
   IF lnStart=1
      tcContent=SUBSTR(tcContent,lnStop+1)
      ELSE
      tcContent=LEFT(tcContent,lnStart-1)+SUBSTR(tcContent,lnStart+lnStop)
   ENDIF
ENDDO
RETURN tcContent
Michel Fournier
Level Extreme Inc.
Designer, architect, owner of the Level Extreme Platform
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