我發現了一個功能here即獲得文件編碼:
<#
.SYNOPSIS
Gets file encoding.
.DESCRIPTION
The Get-FileEncoding function determines encoding by looking at Byte Order Mark (BOM).
Based on port of C# code from http://www.west-wind.com/Weblog/posts/197245.aspx
.EXAMPLE
Get-ChildItem *.ps1 | select FullName, @{n='Encoding';e={Get-FileEncoding $_.FullName}} | where {$_.Encoding -ne 'ASCII'}
This command gets ps1 files in current directory where encoding is not ASCII
.EXAMPLE
Get-ChildItem *.ps1 | select FullName, @{n='Encoding';e={Get-FileEncoding $_.FullName}} | where {$_.Encoding -ne 'ASCII'} | foreach {(get-content $_.FullName) | set-content $_.FullName -Encoding ASCII}
Same as previous example but fixes encoding using set-content
#>
function Get-FileEncoding
{
[CmdletBinding()] Param (
[Parameter(Mandatory = $True, ValueFromPipelineByPropertyName = $True)] [string]$Path
)
[byte[]]$byte = get-content -Encoding byte -ReadCount 4 -TotalCount 4 -Path $Path
if ($byte[0] -eq 0xef -and $byte[1] -eq 0xbb -and $byte[2] -eq 0xbf)
{ Write-Output 'UTF8' }
elseif ($byte[0] -eq 0xfe -and $byte[1] -eq 0xff)
{ Write-Output 'Unicode' }
elseif ($byte[0] -eq 0 -and $byte[1] -eq 0 -and $byte[2] -eq 0xfe -and $byte[3] -eq 0xff)
{ Write-Output 'UTF32' }
elseif ($byte[0] -eq 0x2b -and $byte[1] -eq 0x2f -and $byte[2] -eq 0x76)
{ Write-Output 'UTF7'}
else
{ Write-Output 'ASCII' }
}
而且使用this重新編碼爲ASCII:
If ((Get-FileEncoding -Path $file) -ine "ascii") {
[System.Io.File]::ReadAllText($file) | Out-File -FilePath $file -Encoding Ascii
}
的PowerShell ISE(在v3中驗證)創建_UTF-8_1文件_with BOM_(字節順序標記),而不是Big-Endian Unicode文件。物料清單可能是個問題,因爲物料清單的概念在技術上不適用於UTF-8,並且不鼓勵使用它,但在Windows平臺上,它用於將文件顯式標記爲UTF-8。 – mklement0
請注意,如果您的源代碼包含非ASCII字符,它們將被文字'?'字符替換。用'Out-File -Encoding ASCII'保存。不幸的是,保存爲UTF-8文件是不平常的,因爲「Out-File」不支持它 - 參見http://stackoverflow.com/q/5596982/45375 – mklement0