Package Win32: add .vlt and .wsz extensions

To open skins, you have to use a special command, thus a different
ShellAssociation.
Entries are not selected by default (as they may be associated to
the VLC Skin Editor)

extras/package/win32/vlc.win32.nsi.in

@@ -146,7 +146,7 @@ RequestExecutionLevel user
 ; 1. File type associations ;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
-;; Function that register one extension for VLC
+;; Function that registers one extension for VLC
 Function RegisterExtension
   ; back up old value for extension $R0 (eg. ".opt")
   ReadRegStr $1 HKCR "$R0" ""
@@ -173,6 +173,33 @@ ForVista:
 ToEnd:
 FunctionEnd
 
+;; Function that registers one skin extension for VLC
+Function RegisterSkinExtension
+  ; back up old value for extension $R0 (eg. ".opt")
+  ReadRegStr $1 HKCR "$R0" ""
+  StrCmp $1 "" NoBackup
+    StrCmp $1 "VLC$R0" "NoBackup"
+    WriteRegStr HKCR "$R0" "VLC.backup" $1
+NoBackup:
+  WriteRegStr HKCR "$R0" "" "VLC$R0"
+  ReadRegStr $0 HKCR "VLC$R0" ""
+  WriteRegStr HKCR "VLC$R0" "" "VLC skin file ($R0)"
+  WriteRegStr HKCR "VLC$R0\shell" "" "Open"
+  WriteRegStr HKCR "VLC$R0\shell\Open" "" ""
+  WriteRegStr HKCR "VLC$R0\shell\Open\command" "" '"$INSTDIR\vlc.exe" -Iskins --skins2-last "%1"'
+  WriteRegStr HKCR "VLC$R0\DefaultIcon" "" '"$INSTDIR\vlc.exe",0'
+
+;;; Vista Only part
+  ; Vista and above detection
+  ReadRegStr $R1 HKLM "SOFTWARE\Microsoft\Windows NT\CurrentVersion" CurrentVersion
+  StrCpy $R2 $R1 1
+  StrCmp $R2 '6' ForVista ToEnd
+ForVista:
+  WriteRegStr HKLM "Software\Clients\Media\VLC\Capabilities\FileAssociations" "$R0" "VLC$R0"
+
+ToEnd:
+FunctionEnd
+
 ;; Function that removes one extension that VLC owns.
 Function un.RegisterExtension
   ;start of restore script
@@ -201,6 +228,16 @@ FunctionEnd
   SectionEnd
 !macroend
 
+!macro RegisterSkinExtensionSection EXT
+  Section /o ${EXT}
+    SectionIn 1 3
+    Push $R0
+    StrCpy $R0 ${EXT}
+    Call RegisterSkinExtension
+    Pop $R0
+  SectionEnd
+!macroend
+
 !macro UnRegisterExtensionSection EXT
   Push $R0
   StrCpy $R0 ${EXT}
@@ -287,6 +324,11 @@ FunctionEnd
   !insertmacro ${_action} ".xspf"
 !macroend
 
+!macro MacroSkinExtensions _action
+  !insertmacro ${_action} ".vlt"
+  !insertmacro ${_action} ".wsz"
+!macroend
+
 ; One macro to rule them all
 !macro MacroAllExtensions _action
   !insertmacro MacroAudioExtensions ${_action}
@@ -595,6 +637,7 @@ SectionGroup /e !$Name_Section06 SEC06
   SectionGroupEnd
   SectionGroup $Name_SectionGroupOther
     !insertmacro MacroOtherExtensions RegisterExtensionSection
+    !insertmacro MacroSkinExtensions RegisterSkinExtensionSection
   SectionGroupEnd
 SectionGroupEnd
 
@@ -832,6 +875,7 @@ Section "un.$Name_Section91" SEC91
 
   !insertmacro MacroAllExtensions DeleteContextMenu
   !insertmacro MacroAllExtensions UnRegisterExtensionSection
+  !insertmacro MacroSkinExtensions UnRegisterExtensionSection
   !insertmacro DeleteContextMenuExt "Directory"
 
   ;remove activex plugin