PowerShell在某些场景中替换CRLF

Question

我是PowerShell的新手，希望在文本文件中的某些场景中替换CRLF。

为例文本文件将是：

Begin 1 2 3 
End 1 2 3 
List asd asd 
Begin 1 2 3 
End 1 2 3 
Begin 1 2 3 
End 1 2 3 
Sometest asd asd 
Begin 1 2 3 

凡线不与开始或结束开始，我想该行追加到前一个。

所以期望的结果将是：

Begin 1 2 3 
End 1 2 3 List asd asd 
Begin 1 2 3 
End 1 2 3 
Begin 1 2 3 
End 1 2 3 Sometest asd asd 
Begin 1 2 3 

该文件选项卡分隔。所以在开始和结束之后，是一个TAB。

我试过下面，只是为了摆脱所有的CRLF的，这不工作：

$content = Get-Content c:\test.txt 
$content -replace "'r'n","" | Set-Content c:\test2.txt 

我读过PowerShell中的MSDN，可以在不同线路上替换文本，只是没有结束多行这样的:(

我在对Windows 7的家庭测试，但这是工作，并会在Vista上。

Answer 1

您如何看待这一行呢？

gc "beginend.txt" | % {}{if(($_ -match "^End")-or($_ -match "^Begin")){write-host "`n$_ " -nonewline}else{write-host $_ -nonewline}}{"`n"} 

Begin 1 2 3 
End 1 2 3 List asd asd 
Begin 1 2 3 
End 1 2 3 
Begin 1 2 3 
End 1 2 3 Sometest asd asd 
Begin 1 2 3 

Answer 2

$data = gc "beginend.txt" 

$start = "" 
foreach($line in $data) { 
    if($line -match "^(Begin|End)") { 
     if($start -ne "") { 
      write-output $start 
     } 
     $start = $line 
    } else { 
     $start = $start + " " + $line 
    } 
} 

# This last part is a bit of a hack. It picks up the last line 
# if the last line begins with Begin or End. Otherwise, the loop 
# above would skip the last line. Probably a more elegant way to 
# do it :-) 
if($data[-1] -match "^(Begin|End)") { 
    write-output $data[-1] 
} 

Answer 3

# read the file 
$content = Get-Content file.txt 

# Create a new variable (array) to hold the new content 
$newContent = @() 

# loop over the file content  
for($i=0; $i -lt $content.count; $i++) 
{ 
    # if the current line doesn't begin with 'begin' or 'end' 
    # append it to the last line םכ the new content variable 
    if($content[$i] -notmatch '^(begin|end)') 
    { 
    $newContent[-1] = $content[$i-1]+' '+$content[$i] 
    } 
    else 
    { 
    $newContent += $content[$i] 
    } 
} 

$newContent