View source for Get number of subdirs in dir path

{{PageAuthor|Afrow UK}}

== Description ==
This script gets the number of sub dirs in a directory path (string)
This is useful in conjunction with the [[Uninstall all dirs and subdirs created by your installer|UninstallDirs]] function.

== Usage ==
<highlight-nsis>
Push $INSTDIR #input
 Call SubdirsAmount
Pop $R0 ;number of subdirs in $INSTDIR
</highlight-nsis>

== The Function ==
<highlight-nsis>
Function SubdirsAmount
Exch $R0 ;input string
Push $R1
Push $R2
Push $R3
Push $R4
 StrCpy $R1 0
 StrLen $R2 $R0
loop:
 IntOp $R1 $R1 + 1
  StrCpy $R3 $R0 1 -$R1
 StrCmp $R1 $R2 exit
 StrCmp $R3 "\" 0 loop
  IntOp $R4 $R4 + 1
Goto loop
exit:
StrCpy $R0 $R4
Pop $R4
Pop $R3
Pop $R2
Pop $R1
Exch $R0 ;output
FunctionEnd
</highlight-nsis>

Created for tderouin after [http://forums.winamp.com/showthread.php?s=&postid=1019517 this] topic on the NSIS Forums.

-Stu

[[Category:Disk, Path & File Functions]]