Replace line that starts with specified string: Difference between revisions
From NSIS Wiki
Jump to navigationJump to search
m (Adding new author and category links.) |
mNo edit summary |
||
| Line 3: | Line 3: | ||
== Description == | == Description == | ||
This function replaces lines with a string in a text file that start with a specified string. | This function replaces lines with a string in a text file that start with a specified string. | ||
== Usage == | |||
== Usage == | |||
<highlight-nsis> | <highlight-nsis> | ||
Push "$INSTDIR\file.ext" ; file to modify | Push "$INSTDIR\file.ext" ; file to modify | ||
Push "string" ; string that a line must begin with | Push "string" ; string that a line must begin with | ||
Push "string is blah" ; string to replace whole line with | Push "string is blah" ; string to replace whole line with | ||
Call ReplaceLineStr
</highlight-nsis> | Call ReplaceLineStr | ||
</highlight-nsis> | |||
== The Function == | == The Function == | ||
<highlight-nsis> | <highlight-nsis> | ||
| Line 69: | Line 72: | ||
Pop $R0 | Pop $R0 | ||
FunctionEnd | FunctionEnd | ||
</highlight-nsis>
Written for [[user:moop]] in [http://forums.winamp.com/showthread.php?threadid=195615 this forum topic]. | </highlight-nsis> | ||
Written for [[user:moop]] in [http://forums.winamp.com/showthread.php?threadid=195615 this forum topic]. | |||
-Stu (Afrow UK) | -Stu (Afrow UK) | ||
[[Category:Text Files Manipulation Functions]] | [[Category:Text Files Manipulation Functions]] | ||
Revision as of 06:03, 4 December 2005
| Author: Afrow UK (talk, contrib) |
Description
This function replaces lines with a string in a text file that start with a specified string.
Usage
Push "$INSTDIR\file.ext" ; file to modify Push "string" ; string that a line must begin with Push "string is blah" ; string to replace whole line with Call ReplaceLineStr
The Function
Function ReplaceLineStr Exch $R0 ; string to replace that whole line with Exch Exch $R1 ; string that line should start with Exch Exch 2 Exch $R2 ; file Push $R3 ; file handle Push $R4 ; temp file Push $R5 ; temp file handle Push $R6 ; global Push $R7 ; input string length Push $R8 ; line string length Push $R9 ; global StrLen $R7 $R1 GetTempFileName $R4 FileOpen $R5 $R4 w FileOpen $R3 $R2 r ReadLoop: ClearErrors FileRead $R3 $R6 IfErrors Done StrLen $R8 $R6 StrCpy $R9 $R6 $R7 -$R8 StrCmp $R9 $R1 0 +3 FileWrite $R5 "$R0$\r$\n" Goto ReadLoop FileWrite $R5 $R6 Goto ReadLoop Done: FileClose $R3 FileClose $R5 SetDetailsPrint none Delete $R2 Rename $R4 $R2 SetDetailsPrint both Pop $R9 Pop $R8 Pop $R7 Pop $R6 Pop $R5 Pop $R4 Pop $R3 Pop $R2 Pop $R1 Pop $R0 FunctionEnd
Written for user:moop in this forum topic. -Stu (Afrow UK)
