Get full Java version - Revision history

Yukoba at 03:57, 29 April 2008

2008-04-29T03:57:07Z

â† Older revision		Revision as of 03:57, 29 April 2008
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	[[Category:Other Products Version Detection Functions]]		[[Category:Other Products Version Detection Functions]]
	~~[[Category:Code Examples]]~~
	[[Category:Java]]		[[Category:Java]]

Yukoba at 03:54, 29 April 2008

2008-04-29T03:54:33Z

â† Older revision		Revision as of 03:54, 29 April 2008
Line 135:		Line 135:

	[[Category:Other Products Version Detection Functions]]		[[Category:Other Products Version Detection Functions]]
			[[Category:Code Examples]]
			[[Category:Java]]

ConversionBot: Adding new author and category links.

2005-06-24T12:18:20Z

Adding new author and category links.

â† Older revision		Revision as of 12:18, 24 June 2005
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	{~~\|align=right~~		{{PageAuthor\|pyropunk}}
	~~\|<small>Author: [[~~{~~{ns:2}}:pyropunk~~\|pyropunk~~]] ([[{{ns:3}}:pyropunk\|talk]], [[{{ns:-1}~~}~~:Contributions/pyropunk\|contrib]])</small>~~
	\|}
	~~<br style="clear:both;">~~
	== Description ==		== Description ==
	This code will return the full java version of the installed JRE. If JRE is not installed it will try to read the version from the JDK and failing that will return "no java installed".		This code will return the full java version of the installed JRE. If JRE is not installed it will try to read the version from the JDK and failing that will return "no java installed".
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	Comments welcome.		Comments welcome.

	[[~~{{ns:14}}~~:Other Products Version Detection Functions]]		[[Category:Other Products Version Detection Functions]]

ConversionBot: Added category links.

2005-04-30T22:24:10Z

Added category links.

â† Older revision		Revision as of 22:24, 30 April 2005
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	Comments welcome.		Comments welcome.

			[[{{ns:14}}:Other Products Version Detection Functions]]

ConversionBot: Updated author links.

2005-04-30T02:57:54Z

Updated author links.

@@ Line 1: / Line 1: @@
 == Description ==
 This code will return the full java version of the installed JRE. If JRE is not installed it will try to read the version from the JDK and failing that will return "no java installed".
@@ Line 131: / Line 135: @@
 Comments welcome.

ConversionBot: Updated author and download links, and changed format of some pages.

2005-04-23T12:46:00Z

Updated author and download links, and changed format of some pages.

â† Older revision		Revision as of 12:46, 23 April 2005
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	Comments welcome.		Comments welcome.

	Page author: pyropunk		Page author: [[User:pyropunk\|pyropunk]]

ConversionBot: Wikipedia python library

2005-04-09T21:07:03Z

Wikipedia python library

New page

== Description ==
This code will return the full java version of the installed JRE. If JRE is not installed it will try to read the version from the JDK and failing that will return "no java installed".

== The Script ==
<highlight-nsis>###############################################################################
; Find installed java version and return major, minor, micro and build/update version
; For some reason v1.2.1_004 did not give a build version, but it's the only one of its kind.
; There are 3 ways to get the build version:
; 1) from the UpdateVersion key
; 2) or from the MicroVersion key
; 3) or from the JavaHome key
;example
; call GetJavaVersion
; pop $0 ; major version
; pop $1 ; minor version
; pop $2 ; micro version
; pop $3 ; build/update version
; strcmp $0 "no" JavaNotInstalled
; strcmp $3 "" nobuild
; DetailPrint "$0.$1.$2_$3"
; goto fin
;nobuild:
; DetailPrint "$0.$1.$2"
; goto fin
;JavaNotInstalled:
; DetailPrint "Java Not Installed"
;fin:
Function GetJavaVersion
push $R0
push $R1
push $2
push $0
push $3
push $4

ReadRegStr $2 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment" "CurrentVersion"
StrCmp $2 "" DetectTry2
ReadRegStr $3 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment\$2" "MicroVersion"
StrCmp $3 "" DetectTry2
ReadRegStr $4 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment\$2" "UpdateVersion"
StrCmp $4 "" 0 GotFromUpdate
ReadRegStr $4 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment\$2" "JavaHome"
Goto GotJRE
DetectTry2:
ReadRegStr $2 HKLM "SOFTWARE\JavaSoft\Java Development Kit" "CurrentVersion"
StrCmp $2 "" NoFound
ReadRegStr $3 HKLM "SOFTWARE\JavaSoft\Java Development Kit\$2" "MicroVersion"
StrCmp $3 "" NoFound
ReadRegStr $4 HKLM "SOFTWARE\JavaSoft\Java Development Kit\$2" "UpdateVersion"
StrCmp $4 "" 0 GotFromUpdate
ReadRegStr $4 HKLM "SOFTWARE\JavaSoft\Java Development Kit\$2" "JavaHome"
GotJRE:
; calc build version
strlen $0 $3
intcmp $0 1 0 0 GetFromMicro
; get it from the path
GetFromPath:
strlen $R0 $4
intop $R0 $R0 - 1
StrCpy $0 ""
loopP:
StrCpy $R1 $4 1 $R0
StrCmp $R1 "" DotFoundP
StrCmp $R1 "_" UScoreFound
StrCmp $R1 "." DotFoundP
StrCpy $0 "$R1$0"
Goto GoLoopingP
DotFoundP:
push ""
Exch 6
goto CalcMicro
UScoreFound:
push $0
Exch 6
goto CalcMicro
GoLoopingP:
intcmp $R0 0 DotFoundP DotFoundP
IntOp $R0 $R0 - 1
Goto loopP
GetFromMicro:
strcpy $4 $3
goto GetFromPath
GotFromUpdate:
push $4
Exch 6

CalcMicro:
Push $3 ; micro
Exch 6
; break version into major and minor
StrCpy $R0 0
StrCpy $0 ""
loop:
StrCpy $R1 $2 1 $R0
StrCmp $R1 "" done
StrCmp $R1 "." DotFound
StrCpy $0 "$0$R1"
Goto GoLooping
DotFound:
Push $0 ; major
Exch 5
StrCpy $0 ""
GoLooping:
IntOp $R0 $R0 + 1
Goto loop

done:
Push $0 ; minor
Exch 7
; restore register values
pop $0
pop $2
pop $R1
pop $R0
pop $3
pop $4
return
NoFound:
pop $4
pop $3
pop $0
pop $2
pop $R1
pop $R0
push ""
push "installed"
push "java"
push "no"
FunctionEnd
</highlight-nsis>

Comments welcome.

Page author: pyropunk