Created
March 19, 2019 02:26
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日本語が混じる固定長のShift_JISファイルの特定位置の文字を編集(削る)するPowershell
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# 固定長のShift_JISファイルの特定位置の文字を削除する | |
$filename = "hogehoge.txt" | |
$tempfile = "ZZZZZ_$filename" | |
$enc = [Text.Encoding]::GetEncoding("Shift_JIS") | |
$fhIn = New-Object System.IO.StreamReader($filename, $enc) | |
$fhOut = New-Object System.IO.StreamWriter($tempfile, $false, $enc) | |
$isCuted = $FALSE | |
# 1行ずつ処理 | |
while (($l = $fhIn.ReadLine()) -ne $null) { | |
# 1文字ずつ処理 | |
$tmpString = [System.Linq.Enumerable]::ToArray($l) | |
if($enc.GetByteCount($l) -le 760) { | |
Write-Host "すでに加工済みです" | |
$isCuted = $TRUE | |
break | |
} | |
$iCount = 0 | |
$sOutLine = "" | |
foreach($tmpChar in $tmpString) { | |
$iCount = $iCount + $enc.GetByteCount($tmpChar) | |
# 特定位置の文字を処理しない | |
switch($iCount) { | |
{$_ -le 550} {$sOutLine = $sOutLine + $tmpChar} # <= 549 | |
{$_ -ge 552 -band $_ -le 744} {$sOutLine = $sOutLine + $tmpChar} # >= 552 AND <= 744 | |
} | |
} | |
$fhOut.WriteLine($sOutLine) | |
} | |
$fhIn.Close() | |
$fhOut.Close() | |
# ファイル名の変更 | |
if($isCuted -eq $TRUE) { | |
Remove-Item $tempfile | |
} else { | |
$nowDate = Get-Date -Format "yyyyMMdd_HHmmss" | |
Move-Item $filename "$nowDate-$filename" | |
Move-Item $tempfile $filename | |
} |
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