ChocJunkie
23rd November 2009 09:44 UTC

WordReplace - replace only one occurrence
  Hi,

I would like to replace the colons of a time string usinh 'h' for the first, 'm' for the second and 's' for the third colon.
If tryed using

      ${WordReplace} "$R1" ":" "h" "E+1" $R1

If the input is "10:20:30" the output is "10h2030".
My question is: How can I get 10h20m30s from the input?

Thanks :)

CJ

MSG
23rd November 2009 10:35 UTC

I think this should be it:

!macro _ReplaceFirstByteOccurance _outvar _input _orig _replace

  Push $R0  ;max loopcounter

  Push $R1  ;loopcounter

  Push $R2

 !define Lprefix L${__LINE__}

 StrLen $R0 ${_input}

  StrCpy $R1 0

 ${Lprefix}Loop:

   StrCpy $R2 ${_input} 1 $R1

    StrCmp $R2${_orig} 0 ${Lprefix}NoMatch

      StrCpy $R2${_input} $R1

      StrCpy $R2 $R2${_replace}

     IntOp $R1 $R1 + 1

      StrCpy $R0${_input} "" $R1

      StrCpy $R2 $R2$R0

      goto${Lprefix}End

   ${Lprefix}NoMatch:

   IntOp $R1 $R1 + 1

    StrCmp $R1 $R0 0${Lprefix}loop

    StrCpy $R2${_input}  ;nothing found, return original string.

  ${Lprefix}End:

  !undef Lprefix

  Push $R2

  Exch 3

  pop $R0

  pop $R2

  pop $R1

  pop${_outvar}

!macroend

>!define ReplaceFirstByteOccurance `!insertmacro _ReplaceFirstByteOccurance`


${ReplaceFirstByteOccurance} $1 $1 ":" "h"

>${ReplaceFirstByteOccurance} $1 $1 ":" "m"

>StrCpy $1 "$1s" 

Learn to use StrCmp/StrCpy/StrLen etc. They're very helpful commands.


Edit2: Doh, can't use $R1 as parameter to a macro that uses $R1, obviously.

ChocJunkie
23rd November 2009 10:48 UTC

Thanks for your solution/hint! :)
I've got an idea now, how to implement my what I'm thinking about. ^^

Just because I'm curious:
So it's not possible using WordReplace for this!?
I understood its functionality for problems like this in first place... -.-

CJ

MSG
23rd November 2009 11:01 UTC

Oh, I'm sure it can be done with WordReplace or some other macro like it. But why use a bulky general-purpose script when a tiny little macro of your own will suffice?

kichik
1st December 2009 07:37 UTC

WordReplace is good enough. I don't see how the code you've posted would result in the wrong output. This works fine for me.

StrCpy $R1 20:30:10
${WordReplace} "$R1" ":" "h" "E+1" $R1
DetailPrint $R1 # 20h30:10
${WordReplace} "$R1" ":" "m" "E+1" $R1
DetailPrint $R1 # 20h30m10