Get full Java version: Difference between revisions
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|<small>Author: [[{{ns:2}}:pyropunk|pyropunk]] ([[{{ns:3}}:pyropunk|talk]], [[{{ns:-1}}:Contributions/pyropunk|contrib]])</small> | |||
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== 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. | ||
Revision as of 02:57, 30 April 2005
| Author: pyropunk (talk, contrib) |
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
############################################################################### ; 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
Comments welcome.
