Utility.PS

1.0.9

Remove-Diacritics.ps1

                                <#

.SYNOPSIS

    Decompose characters to their base character equivilents and remove diacritics.

.DESCRIPTION

.EXAMPLE

    PS C:\>Remove-Diacritics 'àáâãäåÀÁÂÃÄÅﬁ⁵ẛ'

    Decompose characters to their base character equivilents and remove diacritics.

.EXAMPLE

    PS C:\>Remove-Diacritics 'àáâãäåÀÁÂÃÄÅﬁ⁵ẛ' -CompatibilityDecomposition

    Decompose composite characters to their base character equivilents and remove diacritics.

.INPUTS

    System.String

#>

function Remove-Diacritics {

    [CmdletBinding()]

    param

    (

        # String value to transform.

        [Parameter(Mandatory = $true, Position = 0, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]

        [AllowEmptyString()]

        [string[]] $InputStrings,

        # Use compatibility decomposition instead of canonical decomposition which further decomposes composite characters and many formatting distinctions are removed.

        [Parameter(Mandatory = $false, ValueFromPipelineByPropertyName = $true)]

        [switch] $CompatibilityDecomposition

    )

    process {

        [System.Text.NormalizationForm] $NormalizationForm = [System.Text.NormalizationForm]::FormD

        if ($CompatibilityDecomposition) { $NormalizationForm = [System.Text.NormalizationForm]::FormKD }

        foreach ($InputString in $InputStrings) {

            $NormalizedString = $InputString.Normalize($NormalizationForm)

            $OutputString = New-Object System.Text.StringBuilder

            foreach ($char in $NormalizedString.ToCharArray()) {

                if ([Globalization.CharUnicodeInfo]::GetUnicodeCategory($char) -ne [Globalization.UnicodeCategory]::NonSpacingMark) {

                    [void] $OutputString.Append($char)

                }

            }

            Write-Output $OutputString.ToString()

        }

    }

}

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