CODEWITHSUNDEEP
powershellasciipowershell-2.0powershell-3.0
Samselvaprabu
Samselvaprabu

Reputation: 18197

How to change the ps1 file in Unicode BigEndian to ASCII?

Our automated build script will sign powershell scripts too. But Some of our powershell scripts are not signed . When i analyzed , we found that there is a known gotcha that Files saved by Powershell ise is saving in Unicode BigEndian which can't be signed.

As it is automated process, if a way to check whether a file is saved in Unicode big endian then change it to ASCII would solve our issue.

In powershell is there a way?

Upvotes: 1

Views: 1201

Answers (1)

xXhRQ8sD2L7Z
xXhRQ8sD2L7Z

Reputation: 1716

I found a function here that gets file encoding:

<#
.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' }
}

And using this to re-encode as ASCII:

If ((Get-FileEncoding -Path $file) -ine "ascii") {
    [System.Io.File]::ReadAllText($file) | Out-File -FilePath $file -Encoding Ascii
}

Upvotes: 2

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