Powershell 基于servicname创建excel sheetname

下面是我的4个csv文件，我正在使用Export-Excel“cmdlet合并这些文件

C:\Script\sum_prod-ild-ne-as1-Proc_mem-check_extender-__ldmodels__Demo_TakeHome_HH_P__eKommerceExtensions__eKommerceExtensions.csv
C:\Script\sum_prod-ild-ne-as1-Proc_mem-check_extender-__ldmodels__Demo_TakeHome_HH_P__T1T2_Reweighting__T1T2_ReweightingExtensions.csv
C:\Script\sum_prod-ild-ne-as2-Proc_mem-check_extender-__ldmodels__Demo_TakeHome_HH_P__eKommerceExtensions__eKommerceExtensions.csv
C:\Script\sum_prod-ild-ne-as2-Proc_mem-check_extender-__ldmodels__Demo_TakeHome_HH_P__T1T2_Reweighting__T1T2_ReweightingExtensions.csv

如果您注意到这里，同一台服务器有两个文件（prod-ild-ne-as1，prod-ild-ne-as2），因为文件名的下一部分是servicename（例如Proc_mem-check_extender-u ldmodels_udemo_utakehome_HH_p_ueCommerceextensions_ueCommerceextensions）

工作表名称应基于servicename，以便一个服务的所有服务器数据都位于一个工作表中，依此类推。因此，在我编写代码之前，当服务名称很小时，该代码工作正常（例如，check_cpu，check_eth0）

但在这种情况下，由于servicename很长，excel不允许创建带有service name的工作表，因为限制为31个字符

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在这种情况下，请告诉我如何使用servicename创建工作表，并将其限制在一定范围内。

Excel工作表名称不仅受其长度限制，而且还有一些字符不能使用

• 该名称在单个工作簿中必须是唯一的

• 工作表名称不能超过31个字符

• 您可以使用所有字母数字字符，但不能使用以下特殊字符：

  \/*？：[]

• 可以在名称中使用空格、下划线（_）和句点（.）作为单词分隔符

考虑到这一点，这是regex的工作：

$csvFiles = 'C:\Script\sum_prod-ild-ne-as1-Proc_mem-check_extender-__ldmodels__Demo_TakeHome_HH_P__eKommerceExtensions__eKommerceExtensions.csv',
            'C:\Script\sum_prod-ild-ne-as1-Proc_mem-check_extender-__ldmodels__Demo_TakeHome_HH_P__T1T2_Reweighting__T1T2_ReweightingExtensions.csv',
            'C:\Script\sum_prod-ild-ne-as2-Proc_mem-check_extender-__ldmodels__Demo_TakeHome_HH_P__eKommerceExtensions__eKommerceExtensions.csv',
            'C:\Script\sum_prod-ild-ne-as2-Proc_mem-check_extender-__ldmodels__Demo_TakeHome_HH_P__T1T2_Reweighting__T1T2_ReweightingExtensions.csv'

$today = (Get-Date).ToUniversalTime()
foreach ($csvPath in $csvFiles) {
    # combine the distinctice part of the server name (a1 or a2) with the distinctive
    # part of the service name (i.e. the stuff between the last underscore and the .csv extension)
    # take out all invalid characters and remove doubled underscores
    $sheetName = $csvPath -replace '^.+-(as[12])-.+_(\w+)\.csv', '$1_$2' -replace '[\\/*?:[\]]+', '_'
    # make sure the sheetname does not exceed the 31 character limit
    if ($sheetName.Length -gt 31) { $sheetName = $sheetName.Substring(0, 31) }

    $target = Join-Path -Path $PSScriptRoot -ChildPath ('Combind_Data_{0:yyyyMMdd-HHmm}.xlsx' -f $today)

    Import-Csv -Path $csvPath | Export-Excel -Path $target -WorksheetName $sheetName -Append
}

使用上述文件名示例，图纸将命名为：

as1_eKommerceExtensions as1_ReweightingExtensions as2_eKommerceExtensions as2_ReweightingExtensions as1_电子商务扩展 as1_重新称重扩展 as2_电子商务扩展 as2_重新称重扩展 正则表达式详细信息：

^ Assert position at the beginning of the string . Match any single character that is not a line break character + Between one and unlimited times, as many times as possible, giving back as needed (greedy) - Match the character “-” literally ( Match the regular expression below and capture its match into backreference number 1 as Match the characters “as” literally [12] Match a single character present in the list “12” ) - Match the character “-” literally . Match any single character that is not a line break character + Between one and unlimited times, as many times as possible, giving back as needed (greedy) _ Match the character “_” literally ( Match the regular expression below and capture its match into backreference number 2 \w Match a single character that is a “word character” (letters, digits, etc.) + Between one and unlimited times, as many times as possible, giving back as needed (greedy) ) \. Match the character “.” literally csv Match the characters “csv” literally ^断言字符串开头的位置 .匹配不是换行符的任何单个字符 +在一次和无限次之间，尽可能多次，根据需要回馈（贪婪） -按字面意思匹配字符“-” （匹配下面的正则表达式，并将其匹配捕获到反向引用编号1中 按字面意思匹配字符“as” [12] 匹配列表“12”中的单个字符 ) -按字面意思匹配字符“-” .匹配不是换行符的任何单个字符 +在一次和无限次之间，尽可能多次，根据需要回馈（贪婪） _按字面意思匹配字符“u” （匹配下面的正则表达式，并将其匹配捕获到反向引用编号2中 \w匹配一个“单词字符”（字母、数字等）的单个字符 +在一次和无限次之间，尽可能多次，根据需要回馈（贪婪） ) \.按字面意思匹配字符“.” csv按字面意思匹配字符“csv” ^ Assert position at the beginning of the string . Match any single character that is not a line break character + Between one and unlimited times, as many times as possible, giving back as needed (greedy) - Match the character “-” literally ( Match the regular expression below and capture its match into backreference number 1 as Match the characters “as” literally [12] Match a single character present in the list “12” ) - Match the character “-” literally . Match any single character that is not a line break character + Between one and unlimited times, as many times as possible, giving back as needed (greedy) _ Match the character “_” literally ( Match the regular expression below and capture its match into backreference number 2 \w Match a single character that is a “word character” (letters, digits, etc.) + Between one and unlimited times, as many times as possible, giving back as needed (greedy) ) \. Match the character “.” literally csv Match the characters “csv” literally