makelauncher.nsi

; This script creates a Java launcher for NodeBox.

Name "NodeBox"
Caption "NodeBox"
Icon "platform\windows\installer\nodebox.ico"
OutFile "dist\windows\nodebox\NodeBox.exe"
RequestExecutionLevel user

SilentInstall silent
AutoCloseWindow true
ShowInstDetails nevershow

!ifndef CLASSPATH
  !error "CLASSPATH needs to be defined. Run this script from Ant."
!endif

!define CLASS "nodebox.client.Application"

!include "FileFunc.nsh"

Section ""
  Call GetJRE
  Pop $R0

  ; change for your purpose (-jar etc.)
  ${GetParameters} $0
  StrCpy $0 '"$R0" -classpath "${CLASSPATH}" ${CLASS} $0'

  SetOutPath $EXEDIR
  Exec $0
SectionEnd

Function GetJRE
;
;  returns the full path of a valid java.exe
;  looks in:
;  1 - .\jre directory (JRE Installed with application)
;  2 - JAVA_HOME environment variable
;  3 - the registry
;  4 - hopes it is in current dir or PATH

  Push $R0
  Push $R1

  ; use javaw.exe to avoid dosbox.
  ; use java.exe to keep stdout/stderr
  !define JAVAEXE "javaw.exe"

  ClearErrors
  StrCpy $R0 "$EXEDIR\jre\bin\${JAVAEXE}"
  IfFileExists $R0 JreFound  ;; 1) found it locally
  StrCpy $R0 ""

  ClearErrors
  ReadEnvStr $R0 "JAVA_HOME"
  StrCpy $R0 "$R0\bin\${JAVAEXE}"
  IfErrors 0 JreFound  ;; 2) found it in JAVA_HOME

  ClearErrors
  ReadRegStr $R1 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment" "CurrentVersion"
  ReadRegStr $R0 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment\$R1" "JavaHome"
  StrCpy $R0 "$R0\bin\${JAVAEXE}"

  IfErrors 0 JreFound  ;; 3) found it in the registry

  MessageBox MB_OK|MB_ICONSTOP "No Java found. Please download and install Java at www.java.com."
  StrCpy $R0 "${JAVAEXE}"  ;; 4) wishing you good luck

 JreFound:
  Pop $R1
  Exch $R0
FunctionEnd