More advanced replace text in file

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Author: Afrow UK (talk, contrib)


Description

This function allows you to replace pieces of text in a file. Instead of replacing all text found in the file, you have the extra option of replacing text after the x times of it occurring, and x times to replace the text after that occurrence.

Usage 1

Push hello #text to be replaced
Push blah #replace with
Push 3 #start replacing after 3rd occurrence
Push 4 #replace next 4 occurrences
Push C:\temp1.bat #file to replace in
 Call AdvReplaceInFile

Usage 2

Push hello #text to be replaced
Push blah #replace with
Push 3 #start replacing after 3rd occurrence
Push all #replace all other occurrences
Push C:\temp1.bat #file to replace in
 Call AdvReplaceInFile

Usage 3

Push hello #text to be replaced
Push blah #replace with
Push all #replace all occurrences
Push all #replace all occurrences
Push C:\temp1.bat #file to replace in
 Call AdvReplaceInFile

The Function

Function AdvReplaceInFile
Exch $0 ;file to replace in
Exch
Exch $1 ;number to replace after
Exch
Exch 2
Exch $2 ;replace and onwards
Exch 2
Exch 3
Exch $3 ;replace with
Exch 3
Exch 4
Exch $4 ;to replace
Exch 4
Push $5 ;minus count
Push $6 ;universal
Push $7 ;end string
Push $8 ;left string
Push $9 ;right string
Push $R0 ;file1
Push $R1 ;file2
Push $R2 ;read
Push $R3 ;universal
Push $R4 ;count (onwards)
Push $R5 ;count (after)
Push $R6 ;temp file name
 
  GetTempFileName $R6
  FileOpen $R1 $0 r ;file to search in
  FileOpen $R0 $R6 w ;temp file
   StrLen $R3 $4
   StrCpy $R4 -1
   StrCpy $R5 -1
 
loop_read:
 ClearErrors
 FileRead $R1 $R2 ;read line
 IfErrors exit
 
   StrCpy $5 0
   StrCpy $7 $R2
 
loop_filter:
   IntOp $5 $5 - 1
   StrCpy $6 $7 $R3 $5 ;search
   StrCmp $6 "" file_write1
   StrCmp $6 $4 0 loop_filter
 
StrCpy $8 $7 $5 ;left part
IntOp $6 $5 + $R3
IntCmp $6 0 is0 not0
is0:
StrCpy $9 ""
Goto done
not0:
StrCpy $9 $7 "" $6 ;right part
done:
StrCpy $7 $8$3$9 ;re-join
 
IntOp $R4 $R4 + 1
StrCmp $2 all loop_filter
StrCmp $R4 $2 0 file_write2
IntOp $R4 $R4 - 1
 
IntOp $R5 $R5 + 1
StrCmp $1 all loop_filter
StrCmp $R5 $1 0 file_write1
IntOp $R5 $R5 - 1
Goto file_write2
 
file_write1:
 FileWrite $R0 $7 ;write modified line
Goto loop_read
 
file_write2:
 FileWrite $R0 $R2 ;write unmodified line
Goto loop_read
 
exit:
  FileClose $R0
  FileClose $R1
 
   SetDetailsPrint none
  Delete $0
  Rename $R6 $0
  Delete $R6
   SetDetailsPrint lastused
 
Pop $R6
Pop $R5
Pop $R4
Pop $R3
Pop $R2
Pop $R1
Pop $R0
Pop $9
Pop $8
Pop $7
Pop $6
Pop $5
;These values are stored in the stack in the reverse order they were pushed
Pop $0
Pop $1
Pop $2
Pop $3
Pop $4
FunctionEnd

Versions History

2010-10-09
Bug fixed that doesn't change "all" occurrences
2006-09-28
Bug fixed that restoring $0~$4 order -- Maxi Ng
2005-July-18
Bug fixed that doesn't replace a text when you have only 1 line in the text file - Mark Bryan Yu
2004-Feb-18
Bug fixed that stopped it replacing parts of text on a line. The bug was only allowing it to replace whole lines.
2003-May-27
Re-written.

Credits

Written by me for modifying batch files.

-Stu (Afrow UK)

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