问NSIS FileRead条件覆盖

EN

Section "Prepare INI example"
InitPluginsDir
WriteIniStr "$PluginsDir\MyFile.ini" ServerInfo ServerAddress "169.254.1.1"
WriteIniStr "$PluginsDir\Dummy.ini" ServerInfo ServerAddress "127.0.0.1"
SectionEnd

!include LogicLib.nsh
Section
ReadIniStr $0 "$PluginsDir\MyFile.ini" ServerInfo ServerAddress
ReadIniStr $1 "$PluginsDir\MyFile.ini" ServerInfo ServerAddressBck
${If} $0 != "169.254.1.1"
${AndIf} $1 != "169.254.1.1"
    CopyFiles /SILENT /FILESONLY "$PluginsDir\Dummy.ini" "$PluginsDir\MyFile.ini"
${EndIf}
SectionEnd

Section "Prepare fake INI example"
InitPluginsDir
FileOpen $0 "$PluginsDir\MyFile.ini" w
FileWrite $0 'Foo$\r$\n'
FileWrite $0 'Bar$\r$\n'
FileWrite $0 'ServerAddress=169.254.1.1$\r$\n'
FileWrite $0 'Baz$\r$\n'
FileClose $0
WriteIniStr "$PluginsDir\Dummy.ini" ServerInfo ServerAddress "127.0.0.1"
SectionEnd

!include LogicLib.nsh

Function TrimTrailingNewlinesAndSpaces
Exch $1
Push $2
again:
    StrCpy $2 $1 "" -1
    StrCmp $2 " " +3
    StrCmp $2 "$\r" +2
    StrCmp $2 "$\n" +1 +3
    StrCpy $1 $1 -1
    Goto again
Pop $2
Exch $1
FunctionEnd

Section
StrCpy $2 "" ; Have not found the magic line
ClearErrors
FileOpen $0 "$PluginsDir\MyFile.ini" r
loop:
    FileRead $0 $1
    IfErrors done
    Push $1
    Call TrimTrailingNewlinesAndSpaces
    Pop $1
    ${If} $1 == "ServerAddress=169.254.1.1"
    ${OrIf} $1 == "ServerAddressBck=169.254.1.1"
        StrCpy $2 1
    ${Else}
        Goto loop
    ${EndIf}
done:
FileClose $0
${If} $2 = 0
    CopyFiles /SILENT /FILESONLY "$PluginsDir\Dummy.ini" "$PluginsDir\MyFile.ini"
${EndIf}
SectionEnd