ScriptingPro · January 26, 2018 22:57 · Apr 17, 2012
diff --git a/encoding-helpers.ps1 b/encoding-helpers.ps1
@@ -0,0 +1,103 @@
+<#
+.SYNOPSIS
+Converts files to the given encoding.
+Matches the include pattern recursively under the given path.
+
+.EXAMPLE
+Convert-FileEncoding -Include *.js -Path scripts -Encoding UTF8
+#>
+function Convert-FileEncoding([string]$Include, [string]$Path, [string]$Encoding='UTF8') {
+  $count = 0
+  Get-ChildItem -Include $Pattern -Recurse -Path $Path `
+  | select FullName, @{n='Encoding';e={Get-FileEncoding $_.FullName}} `
+  | where {$_.Encoding -ne $Encoding} `
+  | % { (Get-Content $_.FullName) `
+        | Out-File $_.FullName -Encoding $Encoding; $count++; }
+
+  Write-Host "$count $Pattern file(s) converted to $Encoding in $Path."
+}
+
+# http://franckrichard.blogspot.com/2010/08/powershell-get-encoding-file-type.html
+<#
+.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
+ 
+ 
+# Modified by F.RICHARD August 2010
+# add comment + more BOM
+# http://unicode.org/faq/utf_bom.html
+# http://en.wikipedia.org/wiki/Byte_order_mark
+#
+# Do this next line before or add function in Profile.ps1
+# Import-Module .\Get-FileEncoding.ps1
+#>
+function Get-FileEncoding
+{
+  [CmdletBinding()] 
+  Param (
+    [Parameter(Mandatory = $True, ValueFromPipelineByPropertyName = $True)] 
+    [string]$Path
+  )
+
+  [byte[]]$byte = get-content -Encoding byte -ReadCount 4 -TotalCount 4 -Path $Path
+  #Write-Host Bytes: $byte[0] $byte[1] $byte[2] $byte[3]
+
+  # EF BB BF (UTF8)
+  if ( $byte[0] -eq 0xef -and $byte[1] -eq 0xbb -and $byte[2] -eq 0xbf )
+  { Write-Output 'UTF8' }
+
+  # FE FF  (UTF-16 Big-Endian)
+  elseif ($byte[0] -eq 0xfe -and $byte[1] -eq 0xff)
+  { Write-Output 'Unicode UTF-16 Big-Endian' }
+
+  # FF FE  (UTF-16 Little-Endian)
+  elseif ($byte[0] -eq 0xff -and $byte[1] -eq 0xfe)
+  { Write-Output 'Unicode UTF-16 Little-Endian' }
+
+  # 00 00 FE FF (UTF32 Big-Endian)
+  elseif ($byte[0] -eq 0 -and $byte[1] -eq 0 -and $byte[2] -eq 0xfe -and $byte[3] -eq 0xff)
+  { Write-Output 'UTF32 Big-Endian' }
+
+  # FE FF 00 00 (UTF32 Little-Endian)
+  elseif ($byte[0] -eq 0xfe -and $byte[1] -eq 0xff -and $byte[2] -eq 0 -and $byte[3] -eq 0)
+  { Write-Output 'UTF32 Little-Endian' }
+
+  # 2B 2F 76 (38 | 38 | 2B | 2F)
+  elseif ($byte[0] -eq 0x2b -and $byte[1] -eq 0x2f -and $byte[2] -eq 0x76 -and ($byte[3] -eq 0x38 -or $byte[3] -eq 0x39 -or $byte[3] -eq 0x2b -or $byte[3] -eq 0x2f) )
+  { Write-Output 'UTF7'}
+
+  # F7 64 4C (UTF-1)
+  elseif ( $byte[0] -eq 0xf7 -and $byte[1] -eq 0x64 -and $byte[2] -eq 0x4c )
+  { Write-Output 'UTF-1' }
+
+  # DD 73 66 73 (UTF-EBCDIC)
+  elseif ($byte[0] -eq 0xdd -and $byte[1] -eq 0x73 -and $byte[2] -eq 0x66 -and $byte[3] -eq 0x73)
+  { Write-Output 'UTF-EBCDIC' }
+
+  # 0E FE FF (SCSU)
+  elseif ( $byte[0] -eq 0x0e -and $byte[1] -eq 0xfe -and $byte[2] -eq 0xff )
+  { Write-Output 'SCSU' }
+
+  # FB EE 28  (BOCU-1)
+  elseif ( $byte[0] -eq 0xfb -and $byte[1] -eq 0xee -and $byte[2] -eq 0x28 )
+  { Write-Output 'BOCU-1' }
+
+  # 84 31 95 33 (GB-18030)
+  elseif ($byte[0] -eq 0x84 -and $byte[1] -eq 0x31 -and $byte[2] -eq 0x95 -and $byte[3] -eq 0x33)
+  { Write-Output 'GB-18030' }
+
+  else
+  { Write-Output 'ASCII' }
+}
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