Reading output to a variable example

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@1614 212acab6-be3b-0410-9dea-997c60f758d6

Contrib/nsExec/test.nsi

@@ -4,9 +4,27 @@ OutFile "nsExec Test.exe"
 
 ShowInstDetails show
 
-Section
+Section "MakeNSIS commands help"
 	nsExec::ExecToLog '"${NSISDIR}\makensis.exe" /CMDHELP'
 	Pop $0
 	DetailPrint ""
 	DetailPrint "       Return value: $0"
+SectionEnd
+
+Section "Output to variable"
+	ReadEnvStr $0 COMSPEC
+	GetTempFileName $1
+	StrCpy $2 "${NSISDIR}\makensis.exe"
+	GetFullPathName /SHORT $2 $2
+	StrCpy $0 '"$0" /C $2 /VERSION > "$1"'
+	nsExec::Exec $0
+	FileOpen $0 $1 r
+	FileRead $0 $3
+	FileClose $0
+	SetDetailsPrint none
+	Delete $1
+	SetDetailsPrint both
+	DetailPrint ""
+	DetailPrint "$2 /VERSION returned: $3"
+	DetailPrint ""
 SectionEnd