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   1 !include WordFunc.nsh
   2
   3 ; Definitions for Java Detection
   4
   5 !define JRE_VERSION "1.6"
   6 !define JRE32_URL "http://javadl.sun.com/webapps/download/AutoDL?BundleId=52247&/jre-6u27-windows-i586.exe"
   7 !define JRE64_URL "http://javadl.sun.com/webapps/download/AutoDL?BundleId=52249&/jre-6u27-windows-x64.exe"
   8
   9 Var JavaDownload
  10 Var JavaBits
  11
  12 Function GetJRE
  13         ${If} ${RunningX64}
  14            StrCpy $JavaDownload ${JRE64_URL}
  15            StrCpy $JavaBits "64"
  16         ${Else}
  17            StrCpy $JavaDownload ${JRE32_URL}
  18            StrCpy $JavaBits "32"
  19         ${EndIf}
  20
  21         MessageBox MB_OK "This product uses Java ${JRE_VERSION}, \
  22                         $JavaBits bits, it will now \
  23                         be downloaded and installed"
  24
  25         StrCpy $2 "$TEMP\Java Runtime Environment.exe"
  26         nsisdl::download /TIMEOUT=30000 $JavaDownload $2
  27         Pop $R0 ;Get the return value
  28                 StrCmp $R0 "success" +3
  29                 MessageBox MB_OK "Download failed: $R0"
  30                 Quit
  31         ExecWait $2
  32         Delete $2
  33 FunctionEnd
  34
  35 Function DetectJRE
  36   ReadRegStr $2 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment" \
  37              "CurrentVersion"
  38
  39   DetailPrint "Desired Java version ${JRE_VERSION}"
  40   DetailPrint "Actual Java version $2"
  41
  42   ${VersionCompare} $2 ${JRE_VERSION} $3
  43
  44   IntCmp $3 1 done done
  45
  46   Call GetJRE
  47
  48 done:
  49
  50 FunctionEnd