powershell - 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 HTML 文件的目录，这些文件正在迁移到共享点站点，我们需要清理一些数据。

具体情况:

大约 1/3 的文件包含 XML header <?xml version="1.0" encoding="utf-8"?>该共享点不喜欢。我们计划只删除该标题行。

每个文件都有“HOME”的javascript参数，指向两个备用的相对主页链接foo1.htm或 foo.htm .我们想将两者都更改为 http:\\sharepoint.site\home.aspx 的绝对链接

每个文件还有一个 javascript 链接参数“Show”，我们只想通过将其更改为 '' 来隐藏它。 .

到目前为止，这是我的功能:

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
    }
}

我想为每个文档添加以下两个编辑:

-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,"","","");', ''

我不确定如何将它们组合成一个语句，所以我打开文件、执行更改、保存和关闭文件，而不是三个单独的打开-编辑-保存/关闭事务。我也不确定，对于所有引号和逗号，转义这些字符的最佳方法，或者整个字符串周围的单引号是否足够。

了解“ 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 ”，但我的工具集仅限于 PowerShell，我试图了解添加这两个 -replace 的最佳方法。线到现有 $content变量...在花括号内用逗号分隔？互相输送？

以下这些是最佳策略吗？或者有什么更好的吗？

$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

如果我正确阅读了问题，我认为这可能会满足您的要求:

$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
    }