PowerShell在某些場景中替換CRLF

Question

我是PowerShell的新手，希望在文本文件中的某些場景中替換CRLF。

爲例文本文件將是：

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 

凡線不與開始或結束開始，我想該行追加到前一個。

所以期望的結果將是：

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 

該文件選項卡分隔。所以在開始和結束之後，是一個TAB。

我試過下面，只是爲了擺脫所有的CRLF的，這不工作：

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

我讀過PowerShell中的MSDN，可以在不同線路上替換文本，只是沒有結束多行這樣的:(

我在對Windows 7的家庭測試，但這是工作，並會在Vista上。

Answer 1

您如何看待這一行呢？

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