Get number of lines in text file

From NSIS Wiki

Author: Afrow UK (talk, contrib)


Description

I used this to show % complete for reading stats from a file.

Usage

Push [filename] ;text file
 Call LineCount
Pop $R0

$R0 = lines in file

The Function

Function LineCount
Exch $R0
Push $R1
Push $R2
 FileOpen $R0 $R0 r
loop:
 ClearErrors
 FileRead $R0 $R1
 IfErrors +3
  IntOp $R2 $R2 + 1
Goto loop
 FileClose $R0
 StrCpy $R0 $R2
Pop $R2
Pop $R1
Exch $R0
FunctionEnd

-Stu

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