显示产品版本？

Question

我的产品版本为w.x.y.z.我对该产品的升级版本是w.x.y.z + 1。但是要求在升级版本的第四个字段之前，即： z不应该被检查......即;我的产品不应该考虑z领域.....请回答我的答案。

Answer 1

您可以从注册表中读取您的应用程序版本并将其保留为变量，然后将其修剪为特定数量的字符。检查http://nsis.sourceforge.net/TrimText:_Trim_text_e.g._to_fit_in_a_label

下面的脚本将工作为ANSI NSIS如果你有这样的版本安装，如果没有，请相应地更改ReadRegStr。

Name "TrimTest" 
OutFile "TrimTest.exe" 

!include "TextFunc.nsh" 
!include "nsDialogs.nsh" 
!include "LogicLib.nsh" 
!include "WinMessages.nsh" 
!include "WordFunc.nsh" 
!insertmacro VersionCompare 

Function TrimText 
Exch $R0 ; char 
Exch 
Exch $R1 ; length 
Exch 2 
Exch $R2 ; text 
Push $R3 
Push $R4 

StrLen $R3 $R2 
IntCmp $R3 $R1 Done Done 

StrCpy $R2 $R2 $R1 

StrCpy $R3 0 
    IntOp $R3 $R3 + 1 
    StrCpy $R4 $R2 1 -$R3 
    StrCmp $R4 "" Done 
    StrCmp $R4 $R0 0 -3 

    IntOp $R3 $R3 + 1 
    StrCpy $R4 $R2 1 -$R3 
    StrCmp $R4 "" Done 
    StrCmp $R4 $R0 -3 

    IntOp $R3 $R3 - 1 
    StrCpy $R2 $R2 -$R3 
    StrCpy $R2 $R2 

Done: 
StrCpy $R0 $R2 
    Pop $R4 
    Pop $R3 
    Pop $R2 
    Pop $R1 
    Exch $R0 ; output 
FunctionEnd 

!macro TrimText Text Length Char Var 
    Push "${Text}" 
    Push "${Length}" 
    Push "${Char}" 
    Call TrimText 
    Pop "${Var}" 
!macroend 

!define TrimText "!insertmacro TrimText" 

Section 
    ReadRegStr $0 HKLM "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\NSIS ANSI" "DisplayVersion" 
    ${TrimText} $0 7 "-" $R0 
;set max lenght to 7, where only 6 chars are needed, as trimmer will stop on - char 
;in your case you will probably want to trim to first . from right side 
    ;${TrimText} "string" "max_length" "up_to_char" "$out_var" 
    MessageBox MB_ICONEXCLAMATION "Line: $R0" 
    ;Input $0 from registry should be "2.46.4-ANSI" if the latest ANSI NSIS is installed 
    ;$R0 after trimm will be "Line: 2.46.4" 
${VersionCompare} $R0 "2.46.6" $R2 
    ${If} $R2 == 1 ;if 2.46.6 is lower that $R0 
    MessageBox MB_ICONEXCLAMATION "Your App Version is newer than this version of update" 
    ${EndIf} 
    ${If} $R2 == 0 ;versions are equal 
    MessageBox MB_ICONEXCLAMATION "Your App Version is equal to this version of update" 
    ${EndIf}  
    ${If} $R2 == 2 ;if 2.46.6 is higher that $R0 
    MessageBox MB_ICONEXCLAMATION "Your App Version is older and will be updated" 
    ;here you can write your update section 
    ${EndIf} 
SectionEnd 

Answer 2

在这种情况下，这可以是一个解决方案（基于http://nsis.sourceforge.net/Sort_String_2）。 我已经创建了Test Registry Key，只是为了检查您的{3.1.123 4.0.112 4.1.119}。请替换您的应用程序使用的那个。

Name "TrimTest2" 
OutFile "TrimTest2.exe" 

!include "TextFunc.nsh" 
!include "nsDialogs.nsh" 
!include "LogicLib.nsh" 
!include "WinMessages.nsh" 
!include "WordFunc.nsh" 
!insertmacro VersionCompare 

Function AdvStrSort 
    Exch $0 ; input string 
    Exch 
    Exch $1 ; count to get part 
    Exch 
    Exch 2 
    Exch $2 ; get ammount of chunks from end 
    Exch 2 
    Push $3 
    Push $4 
    Push $5 
    Push $6 
    Push $7 
    StrCpy $0 " $0" 
    StrCpy $3 0 
    StrCpy $4 0 
    loop: 
    IntOp $3 $3 - 1 
    StrCpy $6 $0 1 $3 
    StrCmp $6 "" skip 
    StrCmp $6 " " roger ; to change chunk seperators, edit this (" ") 
    Goto loop 
    roger: 
    StrCpy $7 $0 "" $3 
    IntOp $4 $4 + 1 
    StrCmp $4 $2 0 loop 
    StrCmp $1 $2 0 +3 
    StrCpy $0 $7 
    Goto end 
    skip: 
    StrCpy $4 0 
    StrLen $5 $7 
    top: 
    IntOp $4 $4 + 1 
    loop2: 
    IntOp $5 $5 - 1 
    StrCpy $3 $7 1 -$5 
    StrCmp $3 "" end 
    StrCmp $3 " " 0 loop2 ; to change chunk seperators, edit this too (" ") 
    StrCmp $4 $1 0 top 
    StrCpy $0 $7 -$5 
    end: 
    StrLen $1 $0 
    IntOp $1 $1 - 1 
    StrCpy $0 $0 $1 -$1 
    Pop $7 
    Pop $6 
    Pop $5 
    Pop $4 
    Pop $3 
    Pop $2 
    Pop $1 
    Exch $0 ; output string 
FunctionEnd 

Section 
    ReadRegStr $R1 HKLM "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\UserApplicationName" "Version" 
Push 1 ; get text after 1st chunk from string end 
Push 1 ; get 1 chunk before the 1st 
    Push "$R1" ; input string (string that has spaces) 
    Call AdvStrSort 
    Pop $R0 
MessageBox MB_ICONEXCLAMATION "Result: $R0" 
${VersionCompare} $R0 "5.0.114" $R2 
;MessageBox MB_ICONEXCLAMATION "Result: $R2" 
    ${If} $R2 == 1 ;if 5.0.114 is lower that $R0 
    MessageBox MB_ICONEXCLAMATION "Your App Version is newer than this version of update" 
    ${EndIf} 
    ${If} $R2 == 0 ;versions are equal 
    MessageBox MB_ICONEXCLAMATION "Your App Version is equal to this version of update" 
    ${EndIf} 
    ${If} $R2 == 2 ;if 5.0.114 is higher that $R0 
    MessageBox MB_ICONEXCLAMATION "Your App Version is older and will be updated" 
    ;here you can write your update section 
    ${EndIf} 
SectionEnd