how can search string in multi line variable and return string line number

[r2du-soft]

hi
for example i have a variable with this value

StrCpy $CFR "1--------------$\r$\n2-Which is the best CPU scheduling algorithm?$\r$\n3-CPU Scheduler$\r$\n4-I/O request or invocation$\r$\n5--------------"

i want search string by word "invocation" and find line number (4) "invocation" is in that..
and read that line first character (4)

[Anders]

You have been around for a while now so you know that NSIS has some word and string macros you can try and if those are not enough then you can build your own with StrCpy+StrCmp+StrLen...

[r2du-soft]

Originally Posted by Anders

You have been around for a while now so you know that NSIS has some word and string macros you can try and if those are not enough then you can build your own with StrCpy+StrCmp+StrLen...

i have big problem
i use from StrRep function to find word
but i cant edit that for find line number

Var C0
Var C1
Var C2
Var C3
Var C4
Var C5
Var C6
Var C7
Var C8
Var C9
Var VCR
Var VCR2
Var VCR3
Var String
!define LineCode '$\r$\n'



!define StrRep "!insertmacro StrRep"
!macro StrRep output string old new
    Push `${string}`
    Push `${old}`
    Push `${new}`
    !ifdef __UNINSTALL__
        Call un.StrRep
    !else
        Call StrRep
    !endif
    Pop ${output}
!macroend
 
!macro Func_StrRep un
    Function ${un}StrRep
        Exch $R2 ;new
        Exch 1
        Exch $R1 ;old
        Exch 2
        Exch $R0 ;string
        Push $R3
        Push $R4
        Push $R5
        Push $R6
        Push $R7
        Push $R8
        Push $R9
 
        StrCpy $R3 0
        StrLen $R4 $R1
        StrLen $R6 $R0
        StrLen $R9 $R2
		
		;$R2 ;new
        ;$R1 ;old
        ;$R0 ;string
		;$R2  =  Removed
		;$R1  =  ${LineCode}
		;$R0  =  Not Change
		
		
		StrCpy $C3 0
        StrLen $C4 ${LineCode}
        StrLen $C6 $R0
		
        loop:

            StrCpy $R5 $R0 $R4 $R3
			
			;--------------------------------------
			StrCpy $C5 $R0 $C4 $C3
			StrCmp $C5 ${LineCode} found2
			IntOp $C3 $C3 + 1 ;move offset by 1 to check the next character
			Back1:
			;--------------------------------------
			
            StrCmp $R5 $R1 found
            StrCmp $R3 $R6 done
            IntOp $R3 $R3 + 1 ;move offset by 1 to check the next character
            Goto loop
        found:
            StrCpy $R5 $R0 $R3
            IntOp $R8 $R3 + $R4
            StrCpy $R7 $R0 "" $R8
            StrCpy $R0 $R5$R2$R7
            StrLen $R6 $R0
            IntOp $R3 $R3 + $R9 ;move offset by length of the replacement string
            Goto loop
			
			
			
		found2:
			
			
            StrCpy $C5 $R0 $C3
            IntOp $C8 $C3 + $C4
            StrCpy $C7 $R0 "" $C8
            StrCpy $R0 $C5$C7
            StrLen $C6 $R0
            IntOp $C3 $C3 + $C9 ;move offset by length of the replacement string
			
			IntOp $VCR $VCR + 1
			StrCpy $VCR2 $VCR2$VCR,
			Goto Back1


			
			
        done:
 MessageBox MB_OK "[$VCR # $VCR2 # $VCR3 # $R0_$R1_$R2_$R3_$R4_$R5_$R6_$R7_$R8_$R9 # $C0_$C1_$C2_$C3_$C4_$C5_$C6_$C7_$C8_$C9]"
 
        Pop $R9
        Pop $R8
        Pop $R7
        Pop $R6
        Pop $R5
        Pop $R4
        Pop $R3
        Push $R0
        Push $R1
        Pop $R0
        Pop $R1
        Pop $R0
        Pop $R2
        Exch $R1
    FunctionEnd
!macroend
!insertmacro Func_StrRep ""
!insertmacro Func_StrRep "un."






       


Section

 ;MessageBox MB_OK "[$VCR # $VCR2 # $VCR3 # $R0_$R1_$R2_$R3_$R4_$R5_$R6_$R7_$R8_$R9 # $C0_$C1_$C2_$C3_$C4_$C5_$C6_$C7_$C8_$C9]"
 
StrCpy $R2 '%%%%'
StrCpy $R1 'invocation'

; 
StrCpy $String "1--------------$\r$\n2-Which is the best CPU scheduling algorithm?$\r$\n3-CPU Scheduler$\r$\n4-I/O request or invocation$\r$\n5--------------"


${StrRep} '$0' '$String' '$R1' '$R2'

MessageBox MB_OK "$0"

SectionEnd

[r2du-soft]

how should i do change the:
FileOpen $R2 $R1 r
&
FileRead $R2 $R3
for support variable this function?

Var String


Function FileSearch

Pop $7 ;~~~~Piotrek occurance numberw
Exch $R0 ;search for
Exch
Exch $R1 ;input file
Push $R2
Push $R3
Push $R4
Push $R5
Push $R6
Push $R7
Push $R8
Push $R9
 
 
  StrLen $R4 $R0
  StrCpy $R7 0
  StrCpy $R8 0
  ;~~~~Piotrek start
  StrCpy $9 0
  ${If} $7 == ""
	StrCpy $7 0 ; occurence number user specified
  ${EndIf}
  ;~~~~Piotrek end
  ClearErrors
  FileOpen $R2 $R1 r
  IfErrors Done
 
  LoopRead:
    ClearErrors
    FileRead $R2 $R3
    IfErrors DoneRead
	IntOp $9 $9 + 1 ;Piotrek
  ;MessageBox MB_OK "$9"
    IntOp $R7 $R7 + 1
    StrCpy $R5 -1
    StrCpy $R9 0
 
    LoopParse:
      IntOp $R5 $R5 + 1
      StrCpy $R6 $R3 $R4 $R5
      StrCmp $R6 "" 0 +4
        StrCmp $R9 1 LoopRead
          IntOp $R7 $R7 - 1
          Goto LoopRead
 
      StrCmp $R6 $R0 0 LoopParse
        StrCpy $R9 1
        IntOp $R8 $R8 + 1
		;~~~~Piotrek start
		${If} $R8 == $7 ;if occurence is specified - outputs a specified occurence if not last occurence is output***93;
			StrCpy $0 $9
			StrCpy $7 "-1"
		${ElseIf} $7 == 0
			StrCpy $0 $9
		${EndIf}
		;~~~~Piotrek end
        Goto LoopParse
  DoneRead:
		  ;MessageBox MB_OK "[$0]_[$1]_[$2]_[$3]_[$4]_[$5]_[$6]_[$7]_[$8]_[$9]_[$R1]_[$R2]_[$R3]_[$R4]_[$R5]_[$R6]_[$R7]_[$R8]_[$R9]"
		  
		  MessageBox MB_OK "1.First String In Line: $0 \
		  $\r$\n2.Find String In Line: $9 \
		  $\r$\n3.Line $9 String IS: $R3 \
		  $\r$\n4.Find String $R8 Time."
		  
    FileClose $R2
  Done:
    StrCpy $R0 $R8
    StrCpy $R1 $R7
 
Pop $R9
Pop $R8
Pop $R7
Pop $R6
Pop $R5
Pop $R4
Pop $R3
Pop $R2
Exch $R1 ;number of lines found on
Exch
Exch $R0 ;output count found
Push $0 ;You need to pop that out after function call as first parameter ````Piotrek
FunctionEnd





Section

StrCpy $String "1--------------$\r$\n2-Which is the best CPU scheduling algorithm?$\r$\n3-CPU Scheduler$\r$\n4-I/O request or invocation$\r$\n5--------------"

		Push "$String"
		Push "invocation"
		Push 1 # line should be displayed for occurance number of the searched string, if empty string is passed or 0 the last occurance will be displayed
		Call FileSearch

SectionEnd