62 lines
1.3 KiB
PowerShell
62 lines
1.3 KiB
PowerShell
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function Test-FileBOM {
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<#
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.SYNOPSIS
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Tests given file if native utf8 w/o BOM is used. Returns false if BOM is present.
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.DESCRIPTION
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This function is used to test for a valid encoding without BOM.
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.PARAMETER Path
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Full or relative path to existing file.
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.INPUTS
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[None]
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.OUTPUTS
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[bool]
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.EXAMPLE
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Test-FileBOM -Path './Testfile.txt'
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.NOTES
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#>
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[CmdletBinding()]
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[OutputType([bool])]
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param (
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[Parameter(Mandatory = $true)]
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[ValidateScript(
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{
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Test-Path -Path $_
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}
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)]
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[string]$Path
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)
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begin {
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}
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process {
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try {
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$contents = [byte[]]::new(3)
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$stream = [System.IO.File]::OpenRead($Path)
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$stream.Read($contents, 0, 3) | Out-Null
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$stream.Close()
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}
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catch {
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Write-Error -Message 'Could not read the given file!' -ErrorAction 'Stop'
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}
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Write-Debug -Message ('BOM Content was: {0}' -f ([System.BitConverter]::ToString($contents)))
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if ( $contents[0] -eq 0xEF -and $contents[1] -eq 0xBB -and $contents -eq 0xBF ) {
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Write-Output $false
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}
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else {
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Write-Output $true
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}
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}
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end {
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}
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}
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