如何避免在.ini文件中对一行进行双重注释?

时间:2018-05-23 13:21:35

标签: powershell

我正在尝试获取和修改.ini文件的内容,但是我需要确保我正在寻找的文本前面没有分号,这将指定该行已“注释掉” ”

.ini文件包含一个参数块,未注释的块被注释掉,如下所示。

;   use the following 2 settings for Sierra external GPS  
;GPSType=Sierra  
;Interface=PPP  
;   use the following 3 settings for internal NMEA GPS  
GPSType=NMEA  
Interface=Serial  
Com=4

我在我的管道中尝试了一个If语句,但是不允许这样做。

   $EOF = {
     Write-Host "Ending Program"
     break
   }
Write-Host "test Application Internal/External Modem Selector"     -BackgroundColor Green -ForegroundColor Black
Write-Host
Write-Host "*** Please ensure test is not running ***" -ForegroundColor     Yellow
Write-Host
if (!(Test-Path "C:\Program Files (x86)\Rogers\test\test.ini"))
  {
Write-Host "Warning - test.INI not present" -BackgroundColor Black -ForegroundColor Red |
Return(0)
  }
Write-Host
Write-Host "1.  Convert for Internal modem (COM4)"
write-Host "4.  Convert for External modem"
Write-Host "Q.  Exit"
Write-Host
$menuresponse = Read-Host 'Choose the option >'
if ($menuresponse -eq "q") {
&$EOF
  }
elseif ($menuresponse -eq "1") 
  {
(Get-Content "C:\Program Files (x86)\Rogers\test\test.ini") |
  If (($_).notcontains(';Com'))
  {
   {
    ForEach-Object {$_ -replace 'GPSType=Sierra' , ';GPSType=Sierra' } |
    ForEach-Object {$_ -replace 'Interface=PPP' , ';Interface=PPP' } |
    ForEach-Object {$_ -replace ';GPSType=NMEA' , 'GPSType=NMEA' } |
    ForEach-Object {$_ -replace ';Interface=Serial' , 'Interface=Serial' } |
    ForEach-Object {$_ -replace ';Com=.*' , 'Com=4' } |
    Set-Content "C:\Program Files (x86)\Rogers\test\test.ini"
   }
  else
   { 
    ForEach-Object {$_ -replace 'Com=.*' , 'Com=4'
    Set-Content "C:\Program Files (x86)\Rogers\test\test.ini"
   }
  }
   }}
elseif ($menuresponse -eq "4") 
  {
   (Get-Content "C:\Program Files (x86)\Rogers\test\test.ini") |
 If (($_).notcontains(';Com'))
 {
  { 
   ForEach-Object {$_ -replace ';GPSType=Sierra' , 'GPSType=Sierra' } |
   ForEach-Object {$_ -replace ';Interface=PPP' , 'Interface=PPP' } |
   ForEach-Object {$_ -replace 'GPSType=NMEA' , ';GPSType=NMEA' } |
   ForEach-Object {$_ -replace 'Interface=Serial' , ';Interface=Serial' } |
   ForEach-Object {$_ -replace 'Com=.*' , ';Com=6' } |
   Set-Content "C:\Program Files (x86)\Rogers\test\test.ini"
  }
  else
   { 
    Write-Host "Modem already set to External"
    &$EOF
   }
  }
  }
else
{ write-host "Invalid Choice"
}
  Break

有没有办法确保我不会在.ini文件中对参数进行“双重评论”,方法是识别它是否在传递指令之前在它之前有分号?

1 个答案:

答案 0 :(得分:2)

  

我需要确保我正在寻找的文字前面没有分号

由于您已经在使用正则表达式,为什么不在匹配中使用字符串锚点^的开头

ForEach-Object {$_ -replace '^GPSType=Sierra' , ';$0' } |

这将取代GPSType = Sierra,但仅限于该行的起点。如果该线条看起来像; GPSType = Sierra则不匹配

请注意在替换中使用$0。它代表整个匹配字符串。使用它可以帮助防止双重打字。

  • 你应该真正研究PowerShell's choice system。超级易于实现和更面向对象的方法。实现它的Here is an answer of mine

  • 您可以链接-replace,因此您不需要多个foreach-object'123' -replace '1','One' -replace '2','Two' -replace '3','Three'