Question

我有一个来自API的文本文件，我只需要删除特定列（第5列）中的空白

示例：

"Number"|"Message"|"Reference"|"SendFrom"|"CampaignName"
"4478xxxxxxxx"|"Test message from test system"|"104"|"dunno"|"Campaign Name Here 2"
"4479xxxxxxxx"|"Test message from test system"|"105"|"dunno"|"Campaign Name Here 2"

我需要输出如下：

"Number"|"Message"|"Reference"|"SendFrom"|"CampaignName"
"4478xxxxxxxx"|"Test message from test system"|"104"|"dunno"|"CampaignNameHere2"
"4479xxxxxxxx"|"Test message from test system"|"105"|"dunno"|"CampaignNameHere2"

因此只有最后一列的空白已删除，而不是文件的其余部分。

我能够隔离最后一列并删除空格：

$columnToGet4 = 4
$columns4 = gc $Report | 
   %{ $_.Split("|",[StringSplitOptions]"RemoveEmptyEntries")[$columnToGet4] }

$columns4 = $columns4 -replace '\s',''

但是尝试将数据重新编织在一起是行不通的。

有关如何实现此目标的任何建议？

谢谢

Answer 1

您可以为此使用PowerShell的CSV处理：

# Import the file as if it was a CSV separated by the pipe,
# and process each row

Import-Csv -LiteralPath 'c:\temp\input.txt' -Delimiter '|' | 
ForEach-Object {

    # Replace spaces in the campaignName column, by name
    $_.CampaignName = $_.CampaignName -replace '\s'

    # and output the changed row item, for export to file
    $_

} | Export-Csv -LiteralPath 'c:\temp\output.txt' -Delimiter '|' -NoTypeInformation

或者纯文本处理和正则表达式替换：

Get-Content -LiteralPath 'c:\temp\input.txt' | ForEach-Object {
    $_ -replace '\s(?=[^|]+$)'
} | Set-Content -LiteralPath 'c:\temp\output.txt' -Encoding ASCII

regex会选择“此后行中不再有管道的空间”（可能不是有效的假设）。

或者您可以使用纯文本处理，选择最后一个竖线字符在哪里：

Get-Content -LiteralPath 'c:\temp\input.txt' | foreach-object {

    $afterLastPipe = $_.lastindexof('|')+1

    $_.Substring(0, $afterLastPipe) + $_.Substring($afterLastPipe).Replace(' ', '')

} | Set-Content...

同样，可能没有一个有效的假设，那就是不再有管道，尤其是如果引号内有一个管道。

Answer 2

假设管道符号是分隔符，而不仅仅是显示标记，那么就可以完成工作... [ grin ]

# fake reading in a CSV file
#    in real life, use Import-CSV -Delimiter '|'
$InStuff = @'
"Number"|"Message"|"Reference"|"SendFrom"|"CampaignName"
"4478xxxxxxxx"|"Test message from test system"|"104"|"dunno"|"Campaign Name Here 2"
"4479xxxxxxxx"|"Test message from test system"|"105"|"dunno"|"Campaign Name Here 2"
'@ | ConvertFrom-Csv -Delimiter '|'

foreach ($IS_Item in $InStuff)
    {
    $IS_Item.CampaignName = $IS_Item.CampaignName.Replace(' ', '')
    }

# on screen
$InStuff

# send to CSV file
$ECSV_Params = @{
    LiteralPath = "$env:TEMP\Pablo_Beezo_-_DeSpacedCampaignNameVersion.csv"
    Delimiter = '|'
    NoTypeInformation = $True
    }
$InStuff |
    Export-Csv @ECSV_Params

屏幕上...

Number       : 4478xxxxxxxx
Message      : Test message from test system
Reference    : 104
SendFrom     : dunno
CampaignName : CampaignNameHere2

Number       : 4479xxxxxxxx
Message      : Test message from test system
Reference    : 105
SendFrom     : dunno
CampaignName : CampaignNameHere2

CSV文件内容...

"Number"|"Message"|"Reference"|"SendFrom"|"CampaignName"
"4478xxxxxxxx"|"Test message from test system"|"104"|"dunno"|"CampaignNameHere2"
"4479xxxxxxxx"|"Test message from test system"|"105"|"dunno"|"CampaignNameHere2"

Answer 3

也许这使得正在发生的事情更加清楚：

$Report = Get-Content ./Data.txt

$Result = foreach ($R in $Report) {
    # Split the original text string into pieces, an array
    $OriginalArray = $R.Split('|')

    # Only execute when there are 4 elements
    if ($OriginalArray.Count -ge 5) {
       # Remove the spaces of the 4th element in the array
       $UpdatedValue = $OriginalArray[4] -replace '\s'

       # Update the original value
       $OriginalArray[4] = $UpdatedValue
    }

    # Join the array back together into one string
    $OriginalArray -join '|'
}

$Result

# Export the data to a file
$Result | Out-File .File.txt -Encoding UTF8

Answer 4

这是单线的：

Import-Csv -Path $source -Delimiter '|' -Encoding UTF8 | % { $_.CampaignName = $_.CampaignName.Replace(' ',''); $_ } | Export-Csv $dest -NoTypeInformation -Delimiter '|'

仅在文本文件中从第5列中删除空格

4 个答案: