Get size on disk

This example code shows you how to get the space used by directories and files.

; A utility for computing the NSIS (or NSIS Unicode) install folder size and the size of
; the uninstaller
; nsissize.nsi
; Compile & run the .exe
 
Name "SOD Tool"
RequestExecutionLevel user
!define LOCAL "" ; Path where local include files reside
OutFile "${LOCAL}nsissize.exe"
!include "${LOCAL}macros.nsh"
ReserveFile "${NSISDIR}\Plugins\Math.dll"
#Icon "${LOCAL}arrows.ico"
ShowInstDetails show
 
; Variables
Var NSIS
Var ZIP
Var ZIP_UN
Var COUNT
Var BLOCK
Var FILES
Var FOLDERS
Var SIZE_B
Var SIZE_M
Var SOD_B
Var SOD_K
Var SOD_M
Var SIZE_UN_B
Var SIZE_UN_K
Var SOD_UN_B
Var SOD_UN_K
 
Function Separator ; comma
  StrCpy $R2 $R1
  StrCpy $COUNT "16" ; 1,000,000,000,000,000 limit
  StrLen $R4 $R1
  loop:
  IntCmp $COUNT 3 endloop endloop 0
  IntCmp $R4 $COUNT 0 +7 0
  IntOp $COUNT $COUNT - 1
  StrCpy $R2 $R2 -$COUNT
  StrCpy $R3 $R1 "" -$COUNT
  StrCpy $R2 "$R2,$R3"
  IntOp $COUNT $COUNT - 2
  Goto loop
  IntOp $COUNT $COUNT - 3
  Goto loop
  endloop:
FunctionEnd
 
Section
; root
  ReadRegStr $NSIS HKLM "SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\\
  NSIS Unicode" "InstallLocation"
  IfErrors 0 begin
  ClearErrors
  ReadRegStr $NSIS HKLM "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\\
  NSIS Unicode" "InstallLocation"
  IfErrors 0 begin
  ClearErrors
  ReadRegStr $NSIS HKLM "SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\\
  NSIS ANSI" "InstallLocation"
  IfErrors 0 begin
  ClearErrors
  ReadRegStr $NSIS HKLM "SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\\
  NSIS" "InstallLocation"
  IfErrors 0 begin
  ClearErrors
  ReadRegStr $NSIS HKLM "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\\
  NSIS ANSI" "InstallLocation"
  IfErrors 0 begin
  ClearErrors
  ReadRegStr $NSIS HKLM "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\\
  NSIS" "InstallLocation"
  IfErrors 0 begin
  ClearErrors
  Goto done
  begin:
  IfFileExists "$NSIS" 0 done
  ${GetFileAttributes} "$NSIS" "COMPRESSED" $ZIP
  ${GetClusterSize} $BLOCK
  ${GetSizeOnDisk} "$NSIS" "/S=0B" "" $0 $1 $2
  Math::Script "r3 = ff($0 / 1024 / 1024.0, 16 +2"
  StrCpy $SIZE_B $0
  StrCpy $FILES $1
  StrCpy $FOLDERS $2
  StrCpy $SIZE_M $3
  ${GetSizeOnDisk} "$NSIS" "/S=0B" "$BLOCK" $0 $1 $2
  Math::Script "r4 = ff($0 / 1024.0, 16 +0); r5 = ff(r4 / 1024.0, 16 +2)"
  StrCpy $SOD_B $0
  StrCpy $SOD_K $4
  StrCpy $SOD_M $5
; uninstaller
  IfFileExists "$NSIS\uninst-nsis.exe" 0 done
  ${GetFileAttributes} "$NSIS\uninst-nsis.exe" "COMPRESSED" $ZIP_UN
  ${GetSizeOnDisk} "$NSIS" "/M=uninst-nsis.exe /S=0B" "" $0 $1 $2
  Math::Script "r6 = ff($0 / 1024.0, 16 +1); \
  a = $0; b = $BLOCK; c = a % b; #[c == 0, c = $BLOCK]; r7 = (b - c + a); \
  r8 = ff(r7 / 1024.0, 16 +1)"
  StrCpy $SIZE_UN_B $0
  StrCpy $SIZE_UN_K $6
  StrCpy $SOD_UN_B $7
  StrCpy $SOD_UN_K $8
; format
  StrCpy $R1 $SIZE_B
  Call Separator
  StrCpy $SIZE_B $R2
 
  StrCpy $R1 $SOD_B
  Call Separator
  StrCpy $SOD_B $R2
 
  StrCpy $R1 $SOD_K
  Call Separator
  StrCpy $SOD_K $R2
 
  StrCpy $R1 $SIZE_UN_B
  Call Separator
  StrCpy $SIZE_UN_B $R2
  StrCpy $R1 $SOD_UN_B
  Call Separator
  StrCpy $SOD_UN_B $R2
; output
  ; note: with compression SOD lines are incorrect
  DetailPrint ""
  DetailPrint "$NSIS"
  DetailPrint "Size: $SIZE_M MB ($SIZE_B bytes)"
  StrCmp $ZIP "1" +3
  StrCmp $ZIP_UN "1" +2
  DetailPrint "SOD: $SOD_M MB ($SOD_B bytes)"
  DetailPrint ""
  DetailPrint "Uninstaller"
  DetailPrint "Size: $SIZE_UN_K KB ($SIZE_UN_B bytes)"
  StrCmp $ZIP "1" +3
  StrCmp $ZIP_UN "1" +2
  DetailPrint "SOD: $SOD_UN_K KB ($SOD_UN_B bytes)"
  DetailPrint ""
  DetailPrint "$FILES files $FOLDERS folders $SOD_K Kb"
  DetailPrint ""
  Goto completed
  done:
  DetailPrint "File not found."
  completed:
SectionEnd
 
;--------------------------------
# EOF

You should copy the next code into a separate file: macros.nsh.

; Macros include file
;--------------------------------
/*
 
 FileFunction=[GetSizeOnDisk|GetClusterSize|GetFileAttributes]
 
*/
;_____________________________________________________________________________
;
;                         Macros
;_____________________________________________________________________________
;
; Change log window verbosity (default: 3=no script)
;
; Example:
; !include "sizemacros.nsh"
; !insertmacro GetSizeOnDisk
; ${FILEFUNC_VERBOSE} 4   # all verbosity
; !insertmacro GetClusterSize
; ${FILEFUNC_VERBOSE} 3   # no script
 
!include Util.nsh ; for "CallArtificialFunction"
 
!verbose push
!verbose 3
!ifndef _FILEFUNC_VERBOSE
	!define _FILEFUNC_VERBOSE 3
!endif
!verbose ${_FILEFUNC_VERBOSE}
!define FILEFUNC_VERBOSE `!insertmacro FILEFUNC_VERBOSE`
!verbose pop
 
!macro FILEFUNC_VERBOSE _VERBOSE
	!verbose push
	!verbose 3
	!undef _FILEFUNC_VERBOSE
	!define _FILEFUNC_VERBOSE ${_VERBOSE}
	!verbose pop
!macroend
 
!macro GetSizeOnDiskCall _PATH _OPTIONS _FILESYSTEM _RESULT1 _RESULT2 _RESULT3
	!verbose push
	!verbose ${_FILEFUNC_VERBOSE}
	Push `${_PATH}`
	Push `${_OPTIONS}`
	Push `${_FILESYSTEM}` ; block size
	${CallArtificialFunction} GetSizeOnDisk_
	Pop ${_RESULT1}
	Pop ${_RESULT2}
	Pop ${_RESULT3}
	!verbose pop
!macroend
 
!macro GetClusterSizeCall _RESULT
	!verbose push
	!verbose ${_FILEFUNC_VERBOSE}
	${CallArtificialFunction} GetClusterSize_
	Pop ${_RESULT}
	!verbose pop
!macroend
 
!macro GetFileAttributesCall _PATH _ATTR _RESULT
	!verbose push
	!verbose ${_FILEFUNC_VERBOSE}
	Push `${_PATH}`
	Push `${_ATTR}`
	${CallArtificialFunction} GetFileAttributes_
	Pop ${_RESULT}
	!verbose pop
!macroend
 
; ---------------
; GetSizeOnDisk (modified "GetSize" - FileFunc.nsh - KiCHiK - Function "FindFiles")
 
!define GetSizeOnDisk `!insertmacro GetSizeOnDiskCall`
!define un.GetSizeOnDisk `!insertmacro GetSizeOnDiskCall`
 
!macro GetSizeOnDisk
!macroend
 
!macro un.GetSizeOnDisk
!macroend
 
; Usage: similar to "GetSize"
 
; For documentation, see the NSIS user manual: E.1.3 GetSize
; Three values are returned
 
; $var1		; Result1: Size/Size on disk
; $var2		; Result2: Sum of files
; $var3		; Result3: Sum of directories
 
; Example: ${GetSizeOnDisk} "$INSTDIR" "/S=0K" "4096" $0 $1 $2
 
; Specifying 4096 (logical size) toggles the result
; Output is size on disk, if used, or size in bytes, if left empty ""
 
!macro GetSizeOnDisk_
	!verbose push
	!verbose ${_FILEFUNC_VERBOSE}
 
	; replace
	Exch $R1
	Exch
	Exch $1
	Exch 2
	; end replace
	Exch $0
	Exch
	Push $2
	Push $3
	Push $4
	Push $5
	Push $6
	Push $7
	Push $8
	Push $9
	; insert code
	Push $R2
	; end insert
	Push $R3
	Push $R4
	Push $R5
	Push $R6
	Push $R7
	Push $R8
	Push $R9
	ClearErrors
 
	StrCpy $R9 $0 1 -1
	StrCmp $R9 '\' 0 +3
	StrCpy $0 $0 -1
	goto -3
	IfFileExists '$0\*.*' 0 FileFunc_GetSize_error
 
	StrCpy $3 ''
	StrCpy $4 ''
	StrCpy $5 ''
	StrCpy $6 ''
	StrCpy $8 0
	StrCpy $R3 ''
	StrCpy $R4 ''
	StrCpy $R5 ''
 
	FileFunc_GetSize_option:
	StrCpy $R9 $1 1
	StrCpy $1 $1 '' 1
	StrCmp $R9 ' ' -2
	StrCmp $R9 '' FileFunc_GetSize_sizeset
	StrCmp $R9 '/' 0 -4
 
	StrCpy $9 -1
	IntOp $9 $9 + 1
	StrCpy $R9 $1 1 $9
	StrCmp $R9 '' +2
	StrCmp $R9 '/' 0 -3
	StrCpy $8 $1 $9
	StrCpy $8 $8 '' 2
	StrCpy $R9 $8 '' -1
	StrCmp $R9 ' ' 0 +3
	StrCpy $8 $8 -1
	goto -3
	StrCpy $R9 $1 2
	StrCpy $1 $1 '' $9
 
	StrCmp $R9 'M=' 0 FileFunc_GetSize_size
	StrCpy $4 $8
	goto FileFunc_GetSize_option
 
	FileFunc_GetSize_size:
	StrCmp $R9 'S=' 0 FileFunc_GetSize_gotosubdir
	StrCpy $6 $8
	goto FileFunc_GetSize_option
 
	FileFunc_GetSize_gotosubdir:
	StrCmp $R9 'G=' 0 FileFunc_GetSize_error
	StrCpy $7 $8
	StrCmp $7 '' +3
	StrCmp $7 '1' +2
	StrCmp $7 '0' 0 FileFunc_GetSize_error
	goto FileFunc_GetSize_option
 
	FileFunc_GetSize_sizeset:
	StrCmp $6 '' FileFunc_GetSize_default
	StrCpy $9 0
	StrCpy $R9 $6 1 $9
	StrCmp $R9 '' +4
	StrCmp $R9 ':' +3
	IntOp $9 $9 + 1
	goto -4
	StrCpy $5 $6 $9
	IntOp $9 $9 + 1
	StrCpy $1 $6 1 -1
	StrCpy $6 $6 -1 $9
	StrCmp $5 '' +2
	IntOp $5 $5 + 0
	StrCmp $6 '' +2
	IntOp $6 $6 + 0
 
	StrCmp $1 'B' 0 +4
	StrCpy $1 1
	StrCpy $2 bytes
	goto FileFunc_GetSize_default
	StrCmp $1 'K' 0 +4
	StrCpy $1 1024
	StrCpy $2 Kb
	goto FileFunc_GetSize_default
	StrCmp $1 'M' 0 +4
	StrCpy $1 1048576
	StrCpy $2 Mb
	goto FileFunc_GetSize_default
	StrCmp $1 'G' 0 FileFunc_GetSize_error
	StrCpy $1 1073741824
	StrCpy $2 Gb
 
	FileFunc_GetSize_default:
	StrCmp $4 '' 0 +2
	StrCpy $4 '*.*'
	StrCmp $7 '' 0 +2
	StrCpy $7 '1'
 
	StrCpy $8 1
	Push $0
	SetDetailsPrint textonly
 
	FileFunc_GetSize_nextdir:
	IntOp $8 $8 - 1
	Pop $R8
	FindFirst $0 $R7 '$R8\$4'
	IfErrors FileFunc_GetSize_show
	StrCmp $R7 '.' 0 FileFunc_GetSize_dir
	FindNext $0 $R7
	StrCmp $R7 '..' 0 FileFunc_GetSize_dir
	FindNext $0 $R7
	IfErrors 0 FileFunc_GetSize_dir
	FindClose $0
	goto FileFunc_GetSize_show
 
	FileFunc_GetSize_dir:
	IfFileExists '$R8\$R7\*.*' 0 FileFunc_GetSize_file
	IntOp $R5 $R5 + 1
	goto FileFunc_GetSize_findnext
 
	FileFunc_GetSize_file:
	StrCpy $R6 0
	StrCmp $5$6 '' 0 +3
	IntOp $R4 $R4 + 1
	goto FileFunc_GetSize_findnext
	FileOpen $9 '$R8\$R7' r
	IfErrors +3
	FileSeek $9 0 END $R6
	FileClose $9
	StrCmp $5 '' +2
	IntCmp $R6 $5 0 FileFunc_GetSize_findnext
	StrCmp $6 '' +2
	IntCmp $R6 $6 0 0 FileFunc_GetSize_findnext
	IntOp $R4 $R4 + 1
	; insert code
	StrCmp $R1 "" +10 0
	StrCpy $R0 $R1
	IntOp $R6 $R6 + $R0
	IntOp $R1 $R6 % $R0
	StrCmp $R1 0 0 +2
	StrCpy $R1 $R0
	IntOp $R2 $R0 - $R1
	IntOp $R6 $R6 - $R0
	IntOp $R6 $R6 + $R2
	StrCpy $R1 $R0
	; end insert
	System::Int64Op $R3 + $R6
	Pop $R3
 
	FileFunc_GetSize_findnext:
	FindNext $0 $R7
	IfErrors 0 FileFunc_GetSize_dir
	FindClose $0
 
	FileFunc_GetSize_show:
	StrCmp $5$6 '' FileFunc_GetSize_nosize
	System::Int64Op $R3 / $1
	Pop $9
	DetailPrint 'Size:$9 $2  Files:$R4  Folders:$R5'
	goto FileFunc_GetSize_subdir
	FileFunc_GetSize_nosize:
	DetailPrint 'Files:$R4  Folders:$R5'
 
	FileFunc_GetSize_subdir:
	StrCmp $7 0 FileFunc_GetSize_preend
	FindFirst $0 $R7 '$R8\*.*'
	StrCmp $R7 '.' 0 FileFunc_GetSize_pushdir
	FindNext $0 $R7
	StrCmp $R7 '..' 0 FileFunc_GetSize_pushdir
	FindNext $0 $R7
	IfErrors 0 FileFunc_GetSize_pushdir
	FindClose $0
	StrCmp $8 0 FileFunc_GetSize_preend FileFunc_GetSize_nextdir
 
	FileFunc_GetSize_pushdir:
	IfFileExists '$R8\$R7\*.*' 0 +3
	Push '$R8\$R7'
	IntOp $8 $8 + 1
	FindNext $0 $R7
	IfErrors 0 FileFunc_GetSize_pushdir
	FindClose $0
	StrCmp $8 0 FileFunc_GetSize_preend FileFunc_GetSize_nextdir
 
	FileFunc_GetSize_preend:
	StrCmp $R3 '' FileFunc_GetSize_nosizeend
	System::Int64Op $R3 / $1
	Pop $R3
	FileFunc_GetSize_nosizeend:
	StrCpy $2 $R4
	StrCpy $1 $R5
	StrCpy $0 $R3
	goto FileFunc_GetSize_end
 
	FileFunc_GetSize_error:
	SetErrors
	StrCpy $0 ''
	StrCpy $1 ''
	StrCpy $2 ''
 
	FileFunc_GetSize_end:
	SetDetailsPrint both
	Pop $R9
	Pop $R8
	Pop $R7
	Pop $R6
	Pop $R5
	Pop $R4
	Pop $R3
	; insert code
	Pop $R2
	; end insert
	Pop $9
	Pop $8
	Pop $7
	Pop $6
	Pop $5
	Pop $4
	Pop $3
	Exch $2
	Exch
	Exch $1
	Exch 2
	Exch $0
 
	!verbose pop
!macroend
 
; ---------------
; GetFileAttributes (FileFunc.nsh)
 
!define GetFileAttributes `!insertmacro GetFileAttributesCall`
!define un.GetFileAttributes `!insertmacro GetFileAttributesCall`
 
!macro GetFileAttributes
!macroend
 
!macro un.GetFileAttributes
!macroend
 
!macro GetFileAttributes_
	!verbose push
	!verbose ${_FILEFUNC_VERBOSE}
 
	Exch $1
	Exch
	Exch $0
	Exch
	Push $2
	Push $3
	Push $4
	Push $5
 
	System::Call 'kernel32::GetFileAttributes(t r0)i .r2'
	StrCmp $2 -1 FileFunc_GetFileAttributes_error
	StrCpy $3 ''
 
	IntOp $0 $2 & 0x4000
	IntCmp $0 0 +2
	StrCpy $3 'ENCRYPTED|'
 
	IntOp $0 $2 & 0x2000
	IntCmp $0 0 +2
	StrCpy $3 'NOT_CONTENT_INDEXED|$3'
 
	IntOp $0 $2 & 0x1000
	IntCmp $0 0 +2
	StrCpy $3 'OFFLINE|$3'
 
	IntOp $0 $2 & 0x0800
	IntCmp $0 0 +2
	StrCpy $3 'COMPRESSED|$3'
 
	IntOp $0 $2 & 0x0400
	IntCmp $0 0 +2
	StrCpy $3 'REPARSE_POINT|$3'
 
	IntOp $0 $2 & 0x0200
	IntCmp $0 0 +2
	StrCpy $3 'SPARSE_FILE|$3'
 
	IntOp $0 $2 & 0x0100
	IntCmp $0 0 +2
	StrCpy $3 'TEMPORARY|$3'
 
	IntOp $0 $2 & 0x0080
	IntCmp $0 0 +2
	StrCpy $3 'NORMAL|$3'
 
	IntOp $0 $2 & 0x0040
	IntCmp $0 0 +2
	StrCpy $3 'DEVICE|$3'
 
	IntOp $0 $2 & 0x0020
	IntCmp $0 0 +2
	StrCpy $3 'ARCHIVE|$3'
 
	IntOp $0 $2 & 0x0010
	IntCmp $0 0 +2
	StrCpy $3 'DIRECTORY|$3'
 
	IntOp $0 $2 & 0x0004
	IntCmp $0 0 +2
	StrCpy $3 'SYSTEM|$3'
 
	IntOp $0 $2 & 0x0002
	IntCmp $0 0 +2
	StrCpy $3 'HIDDEN|$3'
 
	IntOp $0 $2 & 0x0001
	IntCmp $0 0 +2
	StrCpy $3 'READONLY|$3'
 
	StrCpy $0 $3 -1
	StrCmp $1 '' FileFunc_GetFileAttributes_end
	StrCmp $1 'ALL' FileFunc_GetFileAttributes_end
 
	FileFunc_GetFileAttributes_attrcmp:
	StrCpy $5 0
	IntOp $5 $5 + 1
	StrCpy $4 $1 1 $5
	StrCmp $4 '' +2
	StrCmp $4 '|'  0 -3
	StrCpy $2 $1 $5
	IntOp $5 $5 + 1
	StrCpy $1 $1 '' $5
	StrLen $3 $2
	StrCpy $5 -1
	IntOp $5 $5 + 1
	StrCpy $4 $0 $3 $5
	StrCmp $4 '' FileFunc_GetFileAttributes_notfound
	StrCmp $4 $2 0 -3
	StrCmp $1 '' 0 FileFunc_GetFileAttributes_attrcmp
	StrCpy $0 1
	goto FileFunc_GetFileAttributes_end
 
	FileFunc_GetFileAttributes_notfound:
	StrCpy $0 0
	goto FileFunc_GetFileAttributes_end
 
	FileFunc_GetFileAttributes_error:
	SetErrors
	StrCpy $0 ''
 
	FileFunc_GetFileAttributes_end:
	Pop $5
	Pop $4
	Pop $3
	Pop $2
	Pop $1
	Exch $0
 
	!verbose pop
!macroend
 
!define GetFileVersion `!insertmacro GetFileVersionCall`
!define un.GetFileVersion `!insertmacro GetFileVersionCall`
 
!macro GetFileVersion
!macroend
 
!macro un.GetFileVersion
!macroend
 
!macro GetFileVersion_
	!verbose push
	!verbose ${_FILEFUNC_VERBOSE}
 
	Exch $0
	Push $1
	Push $2
	Push $3
	Push $4
	Push $5
	Push $6
	ClearErrors
 
	GetDllVersion '$0' $1 $2
	IfErrors FileFunc_GetFileVersion_error
	IntOp $3 $1 >> 16
	IntOp $3 $3 & 0x0000FFFF
	IntOp $4 $1 & 0x0000FFFF
	IntOp $5 $2 >> 16
	IntOp $5 $5 & 0x0000FFFF
	IntOp $6 $2 & 0x0000FFFF
	StrCpy $0 '$3.$4.$5.$6'
	goto FileFunc_GetFileVersion_end
 
	FileFunc_GetFileVersion_error:
	SetErrors
	StrCpy $0 ''
 
	FileFunc_GetFileVersion_end:
	Pop $6
	Pop $5
	Pop $4
	Pop $3
	Pop $2
	Pop $1
	Exch $0
 
	!verbose pop
!macroend
 
; ---------------
; GetClusterSize
 
!define GetClusterSize `!insertmacro GetClusterSizeCall`
!define un.GetClusterSize `!insertmacro GetClusterSizeCall`
 
!macro GetClusterSize
!macroend
 
!macro un.GetClusterSize
!macroend
 
!macro GetClusterSize_
	!verbose push
	!verbose ${_FILEFUNC_VERBOSE}
 
	System::Call 'kernel32::GetDiskFreeSpace(i0,*i0r0,*i0r1,*i0r2,*i)'
	IntOp $0 $0 * $1
	Push $0
 
	!verbose pop
!macroend

Credits:

GetFileAttributes is borrowed from filefunc.nsh. GetSizeOnDisk has been altered slightly and renamed. The original macro is called GetSize. You will find it in the Users Manual under E.1.3.