Delete 'MTA San Andreas All' in ProgramData in uninstaller

Removes 'MTA San Andreas All' directory if 'Common' is the only directory left. This only affects 'C:\ProgramData\MTA San Andreas All'.

Author: botder

Shared/installer/NSIS dirs/Include/Utils.nsh

@@ -43,6 +43,30 @@
 !define RemoveRegistryGroupWithSingleKey `!insertmacro _RemoveRegistryGroupWithSingleKey`
 
 
+;----------------------------------------
+; Removes a directory if there is only one child directory with a particular name present.
+; IN PARENT_DIR: Path to the parent directory
+; IN DIRNAME: Name of the child directory to check against
+;----------------------------------------
+!macro _RmDirWithSingleChildDir PARENT_DIR DIRNAME
+  Push $0
+  Push $1
+    FindFirst $0 $1 "${PARENT_DIR}\*"
+      StrCmp $1 "" +4               ; [Delete] Either empty or it only contains our file
+      StrCmp $1 "." +5              ; [Next] Current directory
+      StrCmp $1 ".." +4             ; [Next] Parent directory
+      StrCmp $1 "${DIRNAME}" +3 +5  ; [Next] If matching, [Break] otherwise
+      RmDir /r "${PARENT_DIR}"
+      Goto +3                       ; [Break]
+      FindNext $0 $1
+      Goto -7                       ; [Continue]
+    FindClose $0
+  Pop $1
+  Pop $0
+!macroend
+!define RmDirWithSingleChildDir `!insertmacro _RmDirWithSingleChildDir`
+
+
 ;----------------------------------------
 ; In: FILENAME = filename
 ; Out: MAJOR.MINOR.RELEASE.BUILD

Shared/installer/nightly.nsi

@@ -1136,7 +1136,8 @@ Section Uninstall
     Delete "$INSTDIR\MTA\*.bin"
 
     RmDir /r "$APPDATA\MTA San Andreas All\${0.0}"
-    ; TODO if $APPDATA\MTA San Andreas All\Common is the only one left, delete it
+    ; Delete "$APPDATA\MTA San Andreas All" if "Common" is the only directory in it.
+    ${RmDirWithSingleChildDir} "$APPDATA\MTA San Andreas All" "Common"
 
     DeleteRegKey ${PRODUCT_UNINST_ROOT_KEY} "${PRODUCT_UNINST_KEY}"
     DeleteRegKey HKLM "${PRODUCT_DIR_REGKEY}"