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lyx_mirror/development/Win32/packaging/installer/include/detection.nsh

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/*
Detection functions for all components
*/
#--------------------------------
#Macros
!macro SearchMiKTeX25
#Detect location of MiKTeX installation using initexmf
Push $R0
nsExec::ExecToStack "initexmf.exe --report"
Pop $R0 ;Return value
Pop $R0 ;Output
${WordFind2X} $R0 "BinDir: " "$\r" "+1" $PathLaTeX
Pop $R0
!macroend
!macro SearchMiKTeX24 ROOTKEY
ReadRegStr $PathLaTeX ${ROOTKEY} "Software\MiK\MiKTeX\CurrentVersion\MiKTeX" "Install Root"
${if} $PathLaTeX != ""
!insertmacro callfunc TrimBackslash $PathLaTeX $PathLaTeX ;Just in case it's installed in a root directory
StrCpy $PathLaTeX "$PathLaTeX\miktex\bin"
${endif}
!macroend
!macro IfKeyExists ROOT MAIN_KEY KEY
Push $R0
Push $R1
!define Index 'Line${__LINE__}'
StrCpy $R1 0
"${Index}-Loop:"
#Check for key
EnumRegKey $R0 ${ROOT} "${MAIN_KEY}" "$R1"
StrCmp $R0 "" "${Index}-False"
IntOp $R1 $R1 + 1
StrCmp $R0 "${KEY}" "${Index}-True" "${Index}-Loop"
"${Index}-True:"
#Found
Push ${TRUE}
Goto "${Index}-End"
"${Index}-False:"
#Not found
Push ${FALSE}
goto "${Index}-End"
"${Index}-End:"
!undef Index
Exch 2
Pop $R0
Pop $R1
!macroend
#--------------------------------
#Functions
Function SearchAll
Call SearchLaTeX
Call SearchGhostscript
Call SearchImageMagick
IfSilent +2
Call SearchViewer
FunctionEnd
Function TrimBackslash
#Trim a trailing backslash of a directory
Exch $R0
Push $R1
StrCpy $R1 $R0 1 -1
${if} $R1 == "\"
StrLen $R1 $R0
IntOp $R1 $R1 - 1
StrCpy $R0 $R0 $R1
${endif}
Pop $R1
Exch $R0
FunctionEnd
Function GetPathPrefix
Push $R0
StrCpy $R0 "$INSTDIR\bin;$INSTDIR\python"
${if} $PathLaTeX != ""
StrCpy $R0 "$R0;$PathLaTeX"
${endif}
${if} $PathGhostscript != ""
StrCpy $R0 "$R0;$PathGhostscript"
${endif}
${if} $PathImageMagick != ""
StrCpy $R0 "$R0;$PathImageMagick"
${endif}
Exch $R0
FunctionEnd
Function SearchViewer
Push $R0
Push $R1
!insertmacro CallFunc DetectViewerByExtension "pdf" $R0
!insertmacro CallFunc DetectViewerByExtension "ps" $R1
StrCpy $PathViewer ""
${if} $R0 != ""
${if} $R1 != ""
StrCpy $PathViewer "associated"
${endif}
${endif}
Pop $R1
Pop $R0
FunctionEnd
Function DetectViewerByExtension
#Input on stack: file extension without dot
Exch $R0
Push $R1
Push $R2
InitPluginsDir
StrCpy $R1 "$PLUGINSDIR\ViewerDetect.$R0"
FileOpen $R2 $R1 w
FileClose $R2
StrCpy $R0 ""
System::Call "shell32::FindExecutableA(t R1, n, t .R0)"
Delete $R1
Pop $R2
Pop $R1
Exch $R0
FunctionEnd
Function SearchLaTeX
#Search where MikTeX is installed
!insertmacro SearchMiKTeX25
${unless} ${FileExists} "$PathLaTeX\${BIN_LATEX}"
!insertmacro SearchMiKTeX24 HKCU
${endif}
${unless} ${FileExists} "$PathLaTeX\${BIN_LATEX}"
!insertmacro SearchMiKTeX24 HKLM
${endif}
${unless} ${FileExists} "$PathLaTeX\${BIN_LATEX}"
StrCpy $PathLatex ""
${endif}
FunctionEnd
Function SearchLaTeXLocalRoot
#Search for the MikTeX local root
#Returns value on stack
Push $R0
#MikTeX 2.5
!insertmacro IfKeyExists HKCU "Software\MiKTeX.org\MiKTeX" "2.5"
Pop $R0
${if} $R0 == ${FALSE}
!insertmacro IfKeyExists HKLM "Software\MiKTeX.org\MiKTeX" "2.5"
Pop $R0
${endif}
${if} $R0 == ${TRUE}
StrCpy $R0 "$APPDATA\MiKTeX\2.5"
${else}
#MiKTeX 2.4
ReadRegStr $R0 HKCU "Software\MiK\MiKTeX\CurrentVersion\MiKTeX" "Local Root"
${unless} ${FileExists} $R0
ReadRegStr $R0 HKLM "Software\MiK\MiKTeX\CurrentVersion\MiKTeX" "Local Root"
${endif}
${endif}
Exch $R0
FunctionEnd
Function SearchGhostscript
#Search where Ghostscript is installed
Push $R0 ;Temp
Push $R1 ;Counter
Push $R2 ;Enum return
Push $R3 ;AFPL version
Push $R4 ;GPL version
StrCpy $R3 ""
StrCpy $R4 ""
#Check the latest version of AFPL Ghostscript installed
StrCpy $R1 0
${do}
EnumRegKey $R2 HKLM "Software\AFPL Ghostscript" $R1
${if} $R2 != ""
${VersionCompare} $R2 $R3 $R0
${if} $R0 == "1"
StrCpy $R3 $R2
${endif}
IntOp $R1 $R1 + 1
${endif}
${loopuntil} $R2 == ""
#The same for GPL Ghostscript
StrCpy $R1 0
${do}
EnumRegKey $R2 HKLM "Software\GPL Ghostscript" $R1
${if} $R2 != ""
${VersionCompare} $R2 $R4 $R0
${if} $R0 == "1"
StrCpy $R4 $R2
${endif}
IntOp $R1 $R1 + 1
${endif}
${loopuntil} $R2 == ""
#Take the latest one
${VersionCompare} $R3 $R4 $R0
${if} $R0 == "1"
#AFPL is newer
ReadRegStr $PathGhostscript HKLM "Software\AFPL Ghostscript\$R3" "GS_DLL"
${else}
#GPL is newer or equal
ReadRegStr $PathGhostscript HKLM "Software\GPL Ghostscript\$R4" "GS_DLL"
${endif}
#Trim the DLL filename to get the path
${GetParent} $PathGhostscript $PathGhostscript
${unless} ${FileExists} "$PathGhostscript\${BIN_GHOSTSCRIPT}"
StrCpy $PathGhostscript ""
${endif}
Pop $R4
Pop $R3
Pop $R2
Pop $R1
Pop $R0
FunctionEnd
Function SearchImageMagick
#Search where ImageMagick is installed
ReadRegStr $PathImageMagick HKLM "Software\ImageMagick\Current" "BinPath"
${unless} ${FileExists} "$PathImageMagick\${BIN_IMAGEMAGICK}"
StrCpy $PathImageMagick ""
${endif}
FunctionEnd