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Examples/waplugin.nsi

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+; waplugin.nsi
+;
+; This script will generate an installer that installs a Winamp plug-in.
+; It also puts a license page on, for shits and giggles.
+;
+; This installer will automatically alert the user that installation was
+; successful, and ask them whether or not they would like to make the 
+; plug-in the default and run Winamp.
+;
+
+; The name of the installer
+Name "TinyVis Plug-in"
+
+; The file to write
+OutFile "waplugin.exe"
+
+; License page
+; LicenseText "This installer will install the Nullsoft Tiny Visualization 2000 Plug-in for Winamp. Please read the license below."
+; use the default makensis license :)
+; LicenseData license.txt
+
+; The default installation directory
+InstallDir $PROGRAMFILES\Winamp
+; detect winamp path from uninstall string if available
+InstallDirRegKey HKLM \
+                 "Software\Microsoft\Windows\CurrentVersion\Uninstall\Winamp" \
+                 "UninstallString"
+
+; The text to prompt the user to enter a directory
+DirText "Please select your Winamp path below (you will be able to proceed when Winamp is detected):"
+DirShow hide
+
+; automatically close the installer when done.
+AutoCloseWindow true
+; hide the "show details" box
+ShowInstDetails nevershow
+
+Function .onVerifyInstDir
+!ifndef WINAMP_AUTOINSTALL
+  IfFileExists $INSTDIR\Winamp.exe Good
+    Abort
+  Good:
+!endif ; WINAMP_AUTOINSTALL
+FunctionEnd
+
+Function QueryWinampVisPath ; sets $1 with vis path
+  StrCpy $1 $INSTDIR\Plugins
+  ; use DSPDir instead of VISDir to get DSP plugins directory
+  ReadINIStr $9 $INSTDIR\winamp.ini Winamp VisDir 
+  StrCmp $9 "" End
+  IfFileExists $9 0 End
+    StrCpy $1 $9 ; update dir
+  End: 
+FunctionEnd
+
+
+!ifdef WINAMP_AUTOINSTALL
+Function GetWinampInstPath
+  Push $0
+  Push $1
+  Push $2
+  ReadRegStr $0 HKLM \
+     "Software\Microsoft\Windows\CurrentVersion\Uninstall\Winamp" \ 
+     "UninstallString"
+  StrCmp $0 "" fin
+
+    StrCpy $1 $0 1 0 ; get firstchar
+    StrCmp $1 '"' "" getparent 
+      ; if first char is ", let's remove "'s first.
+      StrCpy $0 $0 "" 1
+      StrCpy $1 0
+      rqloop:
+        StrCpy $2 $0 1 $1
+        StrCmp $2 '"' rqdone
+        StrCmp $2 "" rqdone
+        IntOp $1 $1 + 1
+        Goto rqloop
+      rqdone:
+      StrCpy $0 $0 $1
+    getparent:
+    ; the uninstall string goes to an EXE, let's get the directory.
+    StrCpy $1 -1
+    gploop:
+      StrCpy $2 $0 1 $1
+      StrCmp $2 "" gpexit
+      StrCmp $2 "\" gpexit
+      IntOp $1 $1 - 1
+      Goto gploop
+    gpexit:
+    StrCpy $0 $0 $1
+
+    StrCmp $0 "" fin
+    IfFileExists $0\winamp.exe fin
+      StrCpy $0 ""
+  fin:
+  Pop $2
+  Pop $1
+  Exch $0
+FunctionEnd
+
+
+
+Function MakeSureIGotWinamp
+  Call GetWinampInstPath
+  Pop $0
+  StrCmp $0 "" getwinamp
+    Return
+  getwinamp:
+  StrCpy $1 $TEMP\porearre1.dll 
+  StrCpy $2 "$TEMP\Winamp Installer.exe"
+  File /oname=$1 nsisdl.dll
+  Push http://download.nullsoft.com/winamp/client/winamp277_lite.exe
+  Push $2
+  CallInstDLL $1 download
+  Delete $1
+  StrCmp $0 success success
+    SetDetailsView show
+    DetailPrint "download failed: $0"
+    Abort
+  success:
+    ExecWait '"$2" /S'
+    Delete $2
+    Call GetWinampInstPath
+    Pop $0
+    StrCmp $0 "" skip
+    StrCpy $INSTDIR $0
+  skip:
+FunctionEnd
+
+!endif ; WINAMP_AUTOINSTALL
+; The stuff to install
+Section "ThisNameIsIgnoredSoWhyBother?"
+!ifdef WINAMP_AUTOINSTALL
+  Call MakeSureIGotWinamp
+!endif
+
+  Call QueryWinampVisPath
+  SetOutPath $1
+
+  ; File to extract
+  File "C:\program files\winamp\plugins\vis_nsfs.dll"
+
+  ; prompt user, and if they select no, skip the following 3 instructions.
+  MessageBox MB_YESNO|MB_ICONQUESTION \
+             "The plug-in was installed. Would you like to run Winamp now with TinyVis as the default plug-in?" \
+             IDNO NoWinamp
+    WriteINIStr "$INSTDIR\Winamp.ini" "Winamp" "visplugin_name" "vis_nsfs.dll"
+    WriteINIStr "$INSTDIR\Winamp.ini" "Winamp" "visplugin_num" "0"
+    Exec '"$INSTDIR\Winamp.exe"'
+  NoWinamp:
+SectionEnd
+
+; eof