Uninstall only installed files

Author: Afrow UK (talk, contrib)

Description

This code was written for Rookie12 a long while back. So many people have asked the same question since, so I thought that it was a good idea to put it up on here.

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Entire script updated 20th October 2010

• Added functions for WriteRegStr and WriteRegDWORD.
• Added StrCmp, to the uninstaller code, to determine if the item is a Registry Value.
• Broke the code into a macro file added to the main script via an !include.

This should help keep you script clean and allow reuse of the macros.

-Rapitharian

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Entire script updated 12th May 2006

• Added functions for AddItem, CopyFiles and Rename.
• RMDir /r removed.
• Log file now read in reverse order.

-Stu

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Script updated 28 Sep 2006

• Fix issue where uninstall.log is not created if $INSTDIR doesn't already exist
• Fix infinite loop on uninstall - "last" line (actually first line) of uninstall.log is read over and over again

- Anonymoose

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Script updated 08 Nov 2006

• Uninstaller now deletes itself and $INSTDIR

- mark

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Script updated 27 April 2007

• Removed Delete instruction to delete the uninstaller and added ${WriteUninstaller} instead.
• RMDir $INSDIR was repeated from last update.

- Afrow UK

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Script updated 18 August 2009

• Added ${CreateShortcut} macro based on ${File}.

- Adm.Wiggin

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Script updated 28 Dec 2009

• Uninstaller now works faster (it needs to parse uninstall.log only one time)

- Aleppin

The Macro Script

Take the next chunk of code and save it to a file called UnInstallLog.nsh in %ProgramFiles%\NSIS\Include\.

;AddItem macro
  !macro AddItem Path
    FileWrite $UninstLog "${Path}$\r$\n"
  !macroend
 
;File macro
  !macro File FilePath FileName
     IfFileExists "$OUTDIR\${FileName}" +2
     FileWrite $UninstLog "$OUTDIR\${FileName}$\r$\n"
     File "${FilePath}${FileName}"
  !macroend
 
;CreateShortcut macro
  !macro CreateShortcut FilePath FilePointer Pamameters Icon IconIndex
    FileWrite $UninstLog "${FilePath}$\r$\n"
    CreateShortcut "${FilePath}" "${FilePointer}" "${Pamameters}" "${Icon}" "${IconIndex}"
  !macroend
 
;Copy files macro
  !macro CopyFiles SourcePath DestPath
    IfFileExists "${DestPath}" +2
    FileWrite $UninstLog "${DestPath}$\r$\n"
    CopyFiles "${SourcePath}" "${DestPath}"
  !macroend
 
;Rename macro
  !macro Rename SourcePath DestPath
    IfFileExists "${DestPath}" +2
    FileWrite $UninstLog "${DestPath}$\r$\n"
    Rename "${SourcePath}" "${DestPath}"
  !macroend
 
;CreateDirectory macro
  !macro CreateDirectory Path
    CreateDirectory "${Path}"
    FileWrite $UninstLog "${Path}$\r$\n"
  !macroend
 
;SetOutPath macro
  !macro SetOutPath Path
    SetOutPath "${Path}"
    FileWrite $UninstLog "${Path}$\r$\n"
  !macroend
 
;WriteUninstaller macro
  !macro WriteUninstaller Path
    WriteUninstaller "${Path}"
    FileWrite $UninstLog "${Path}$\r$\n"
  !macroend
 
;WriteRegStr macro
  !macro WriteRegStr RegRoot UnInstallPath Key Value
     FileWrite $UninstLog "${RegRoot} ${UnInstallPath}$\r$\n"
     WriteRegStr "${RegRoot}" "${UnInstallPath}" "${Key}" "${Value}"
  !macroend
 
 
;WriteRegDWORD macro
  !macro WriteRegDWORD RegRoot UnInstallPath Key Value
     FileWrite $UninstLog "${RegRoot} ${UnInstallPath}$\r$\n"
     WriteRegStr "${RegRoot}" "${UnInstallPath}" "${Key}" "${Value}"
  !macroend

The Script

Now add the include to the top of your script

!include "UninstallLog.nsh"
<highlight-nsis>
 
<p>'''The next chunk of code goes before all your sections; in your script...'''</p>
 
<highlight-nsis>
;--------------------------------
; Configure UnInstall log to only remove what is installed
;-------------------------------- 
  ;Set the name of the uninstall log
    !define UninstLog "uninstall.log"
    Var UninstLog
 
  ;Uninstall log file missing.
    LangString UninstLogMissing ${LANG_ENGLISH} "${UninstLog} not found!$\r$\nUninstallation cannot proceed!"
 
  ;AddItem macro
    !define AddItem "!insertmacro AddItem"
 
  ;File macro
    !define File "!insertmacro File"
 
  ;CreateShortcut macro
    !define CreateShortcut "!insertmacro CreateShortcut"
 
  ;Copy files macro
    !define CopyFiles "!insertmacro CopyFiles"
 
  ;Rename macro
    !define Rename "!insertmacro Rename"
 
  ;CreateDirectory macro
    !define CreateDirectory "!insertmacro CreateDirectory"
 
  ;SetOutPath macro
    !define SetOutPath "!insertmacro SetOutPath"
 
  ;WriteUninstaller macro
    !define WriteUninstaller "!insertmacro WriteUninstaller"
 
  ;WriteRegStr macro
    !define WriteRegStr "!insertmacro WriteRegStr"
 
  ;WriteRegDWORD macro
    !define WriteRegDWORD "!insertmacro WriteRegDWORD" 
 
  Section -openlogfile
    CreateDirectory "$INSTDIR"
    IfFileExists "$INSTDIR\${UninstLog}" +3
      FileOpen $UninstLog "$INSTDIR\${UninstLog}" w
    Goto +4
      SetFileAttributes "$INSTDIR\${UninstLog}" NORMAL
      FileOpen $UninstLog "$INSTDIR\${UninstLog}" a
      FileSeek $UninstLog 0 END
  SectionEnd

Your sections, (the ones that add files,) need to be placed "here" (Between the above and below chunks of code) in your script.
Instead of using AddItem, File, CreateShortcut, CopyFiles, Rename, CreateDirectory, SetOutPath, WriteUninstaller, WriteRegStr and WriteRegDWORD instructions in your sections, use; ${AddItem}, ${File}, ${CreateShortcut}, ${CopyFiles}, ${Rename}, ${CreateDirectory}, ${SetOutPath}, ${WriteUninstaller}, ${WriteRegStr} and ${WriteRegDWORD} instead.

When using ${SetOutPath} to create more than one upper level directory, e.g.:
${SetOutPath} "$INSTDIR\dir1\dir2\dir3", you need to add entries for each lower level directory for them all to be deleted:

${AddItem} "$INSTDIR\dir1"
${AddItem} "$INSTDIR\dir1\dir2"
${SetOutPath} "$INSTDIR\dir1\dir2\dir3"

The Following is an example of what your sections may look like...

Section "Install Main"
SectionIn RO
 ${SetOutPath} $INSTDIR
 ${WriteUninstaller} "uninstall.exe"
 ${File} "dir1\" "file1.ext"
 ${File} "dir1\" "file2.ext"
 ${File} "dir1\" "file3.ext"
 ;Write the installation path into the registry
   ${WriteRegStr} "${REG_ROOT}" "${REG_APP_PATH}" "Install Directory" "$INSTDIR"
 ;Write the Uninstall information into the registry
   ${WriteRegStr} ${REG_ROOT} "${UNINSTALL_PATH}" "UninstallString" '"$INSTDIR\uninstall.exe"'
SectionEnd
 
Section "Install Other"
 ${AddItem} "$INSTDIR\Other"
 ${SetOutPath} "$INSTDIR\Other\Temp"
 ${File} "dir2\" "file4.ext"
 ${File} "dir2\" "file5.ext"
 ${File} "dir2\" "file6.ext"
SectionEnd
 
Section "Copy Files & Rename"
 ${CreateDirectory} "$INSTDIR\backup"
 ${CopyFiles} "$INSTDIR\file1.ext" "$INSTDIR\backup\file1.ext"
 ${Rename} "$INSTDIR\file2.ext" "$INSTDIR\file1.ext"
SectionEnd

The next chunk of code comes after all of your sections, in your script...

;--------------------------------
; Uninstaller
;--------------------------------
Section Uninstall
  ;Can't uninstall if uninstall log is missing!
  IfFileExists "$INSTDIR\${UninstLog}" +3
    MessageBox MB_OK|MB_ICONSTOP "$(UninstLogMissing)"
      Abort
 
  Push $R0
  Push $R1
  Push $R2
  SetFileAttributes "$INSTDIR\${UninstLog}" NORMAL
  FileOpen $UninstLog "$INSTDIR\${UninstLog}" r
  StrCpy $R1 -1
 
  GetLineCount:
    ClearErrors
    FileRead $UninstLog $R0
    IntOp $R1 $R1 + 1
    StrCpy $R0 $R0 -2
    Push $R0   
    IfErrors 0 GetLineCount
 
  Pop $R0
 
  LoopRead:
    StrCmp $R1 0 LoopDone
    Pop $R0
 
    IfFileExists "$R0\*.*" 0 +3
      RMDir $R0  #is dir
    Goto +9
    IfFileExists $R0 0 +3
      Delete $R0 #is file
    Goto +6
    StrCmp $R0 "${REG_ROOT} ${REG_APP_PATH}" 0 +3
      DeleteRegKey ${REG_ROOT} "${REG_APP_PATH}" #is Reg Element
    Goto +3
    StrCmp $R0 "${REG_ROOT} ${UNINSTALL_PATH}" 0 +2
      DeleteRegKey ${REG_ROOT} "${UNINSTALL_PATH}" #is Reg Element
 
    IntOp $R1 $R1 - 1
    Goto LoopRead
  LoopDone:
  FileClose $UninstLog
  Delete "$INSTDIR\${UninstLog}"
  Pop $R2
  Pop $R1
  Pop $R0
 
  ;Remove registry keys
    ;DeleteRegKey ${REG_ROOT} "${REG_APP_PATH}"
    ;DeleteRegKey ${REG_ROOT} "${UNINSTALL_PATH}"
SectionEnd

-Rapitharian