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Q234212: HOWTO: Insert Line into Text File Using Low-level File Functions

Article: Q234212
Product(s): Microsoft FoxPro
Version(s): MACINTOSH:3.0b; WINDOWS:2.6,2.6a,3.0,3.0b,5.0,5.0a,6.0
Operating System(s): 
Keyword(s): kbvfp300 kbvfp300b kbvfp500 kbvfp500a kbvfp600 kbXBase kbGrpDSFox kbDSupport
Last Modified: 27-AUG-1999

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The information in this article applies to:

- Microsoft FoxPro for Windows, versions 2.6, 2.6a 
- Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0, 5.0a, 6.0 
- Microsoft Visual FoxPro for Macintosh, version 3.0b 
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SUMMARY
=======

You can add lines of a text into a text file by creating a function using the
code in the MORE INFORMATION section of this article.

MORE INFORMATION
================

Save the following code to a program (PRG) file. The calling convention is :

Syntax:      InsertText(expC1, expN, expC2)

Parameters:  expC1  The file into which text is inserted
            expN   The line number after which text is inserted
            expC2  The text to be inserted
Returns:     Numeric

  *-- Function InsertLine
  *-- Description: Inserts text into a file at a specified line
  *--
  *-- Parameters:
  *-- lsFileName - The file into which text is inserted
  *-- liLineNum  - The line number after which text is inserted
  *-- lsText     - The text to be inserted
  *-- Returns:
  *-- -1 = File could not be opened
  *-- -2 = Text insertion failed
  *-- -3 = File could not be closed

  Function InsertLine
  Parameter lsFileName, liLineNum, lsText
  liFile = Fopen(lsFileName, 12)
  If liFile = -1
      Return -1
  Endif

  *-- Loop until we get to the desired line
  For i = 1 To liLineNum
      =Fgets(liFile)
  Endfor

  *-- Insert the text
  liRc = Fputs(liFile, lsText)
  If liRc = 0
      Return -2
  Endif

  *-- Clean up
  llRc = Fclose(liFile)
  If !llRc 
      Return -3
  Else
      Return 1
  Endif

(c) Microsoft Corporation 1999, All Rights Reserved.
Contributions by Mike A. Stewart, Microsoft Corporation


Additional query words: Add data low-level low level

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Keywords          : kbvfp300 kbvfp300b kbvfp500 kbvfp500a kbvfp600 kbXBase kbGrpDSFox kbDSupport 
Technology        : kbHWMAC kbOSMAC kbVFPsearch kbAudDeveloper kbFoxproSearch kbFoxPro260 kbFoxPro260a kbVFP300bMac kbVFP300 kbVFP300b kbVFP500 kbVFP600 kbVFP500a
Version           : MACINTOSH:3.0b; WINDOWS:2.6,2.6a,3.0,3.0b,5.0,5.0a,6.0
Issue type        : kbhowto

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