在Powershell中替换多个字符串的正确语法

Question

我们有一个包含3000多个正在迁移到SharePoint站点的HTML文件的目录，我们需要清理一些数据。

具体情况：

• 文件约1/3的包括XML头<?xml version="1.0" encoding="utf-8"?> SharePoint可并不喜欢。我们计划只删除该标题行。
• 每个文件都有指向两个备用相关主页链接foo1.htm或foo.htm的“HOME”的javascript参数。我们想要将两者都改为绝对链接http:\\sharepoint.site\home.aspx
• 每个文件还有一个javascript链接参数“显示”，我们只是想通过将其更改为''来隐藏它。

这里是我的功能至今：

function scrubXMLHeader { 
    $srcfiles  = Get-ChildItem $backupGuidePath -filter "*htm.*"        
    $srcfilecount = (Get-ChildItem $backupGuidePath).Count          
    $selfilecount = $srcfiles.Count                
    # Input and Ouput Path variables 
    $sourcePath  = $backupGuidePath 
    $destinationPath = $workScrubPath 
    "Input From: $($sourcePath)" | Log $messagLog -echo   
    " Output To: $($destinationPath)" | Log $messageLog -echo 
    # 
    $temp01 = Get-ChildItem $sourcePath -filter "*.htm" 
    foreach($file in $temp01) 
    { 
     $outfile = $destinationPath + $file 
     $content = Get-Content $file.Fullname | ? {$_ -notmatch "<\?xml[^>]+>" } 
     Set-Content -path $outfile -Force -Value $content 
    } 
} 

我想下面的两个编辑添加到每个文件：

-replace '("foo.htm", "", ">", "Home", "foo1.htm")', '("http:\\sharepoint.site\home.aspx", "", ">", "Home", "http:\\sharepoint.site\home.aspx") 
-replace 'addButton("show",BTN_TEXT,"Show","","","","",0,0,"","","");', '' 

我不知道如何将这些合并成一个单一语句，所以我打开文件，执行更改，保存并关闭文件，而不是三个单独的打开编辑 - 保存/关闭事务。我也不确定，用所有的引号和逗号，逃避这些角色的最好方法，或者围绕整个字符串的单引号是否足够。

理解到“asking regexes to parse arbitrary HTML is like asking Paris Hilton to write an operating system, it's sometimes appropriate to parse a limited, known set of HTML”，但在我的工具包，PowerShell的限制，我想了解两个-replace行添加到现有的$content变量......在大括号内用逗号分隔的最好方法？互相传送？

下面是这些最佳策略吗？还是有更好的？

$content = Get-Content $file.Fullname | ? {$_ -notmatch "<\?xml[^>]+>", 
    -replace '("foo.htm", "", ">", "Home", "foo1.htm")', '("http:\\sharepoint.site\home.aspx", "", ">", "Home", "http:\\sharepoint.site\home.aspx"), 
    -replace 'addButton("show",BTN_TEXT,"Show","","","","",0,0,"","","");', '' } 

Answer 1

如果我正确读取的问题，我觉得这可能会做你想要什么：

$Regex0 = '<?xml version="1.0" encoding="utf-8"?> ' 

$Regex1 = '("foo.htm", "", ">", "Home", "foo1.htm")' 
$Replace1 = '("http:\\sharepoint.site\home.aspx", "", ">", "Home", "http:\\sharepoint.site\home.aspx")' 

$Regex2 = 'addButton("show",BTN_TEXT,"Show","","","","",0,0,"","","");' 


foreach($file in $temp01) 
    { 
     $outfile = $destinationPath + $file 
     (Get-Content $file.Fullname) -notmatch $Regex0,'' -replace $Regex1,$Replace1 -replace $Regex2,'' | 
     Set-Content -path $outfile -Force -Value $content 
    }