cp-21keo.ExcelCoordinate.psm1
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function ConvertFrom-ExcelCellCoordinate { [OutputType([hashtable])] param ( [Parameter(ValueFromPipeline = $true)] [string] $InputObject ) process { [hashtable] $cell = Expand-ExcelCellCoordinate -InputObject $InputObject [int[]] $asciiCodes = Convert-StringToBase26 -InputObject $cell.Column $cell.Column = Convert-Base26ToInt -InputObject $asciiCodes Write-Output $cell } } function Expand-ExcelCellCoordinate { [OutputType([hashtable])] param ( [Parameter(ValueFromPipeline = $true)] [string] $InputObject ) process { if ($InputObject -notmatch '^(?<Column>[a-z]{1,3})(?<Row>\d{1,7})$') { throw [System.ArgumentException]::new('InputObject should be in format LettersNumbers', 'InputObject') } [hashtable] $cell = @{ Row = [int]$Matches['Row'] Column = $Matches['Column'].ToUpperInvariant() } Write-Output $cell } } function Convert-StringToBase26 { [OutputType([int[]])] param ( [Parameter(ValueFromPipeline = $true)] [string] $InputObject ) process { if ([string]::IsNullOrEmpty($InputObject)) { Write-Output (, [int[]]::new(0)) return } [int[]] $parts = $InputObject.ToUpperInvariant().ToCharArray() $parts = $parts | ForEach-Object { $_ - 64 }; [Array]::Reverse($parts) Write-Output (, $parts) } } function Convert-Base26ToInt { [OutputType([int])] param ( [Parameter(ValueFromPipeline = $true)] [int[]] $InputObject ) process { [int] $result = 0; for ($i = 0; $i -lt $InputObject.Length; $i++) { $result += [Math]::Pow(26, $i) * $InputObject[$i] } Write-Output $result } } |