ConvertFrom-SourceTable.ps1
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<#PSScriptInfo
.VERSION 0.0.25 .GUID 0019a810-97ea-4f9a-8cd5-4babecdc916b .AUTHOR iRon .DESCRIPTION Converts a source table (format-table) or markdown table to objects .COMPANYNAME .COPYRIGHT .TAGS Read Input Convert Resource Table Format MarkDown .LICENSEURI https://github.com/iRon7/ConvertFrom-SourceTable/LICENSE.txt .PROJECTURI https://github.com/iRon7/ConvertFrom-SourceTable .ICONURI https://raw.githubusercontent.com/iRon7/Join-Object/master/ConvertFrom-SourceTable.png .EXTERNALMODULEDEPENDENCIES .REQUIREDSCRIPTS .EXTERNALSCRIPTDEPENDENCIES .RELEASENOTES .PRIVATEDATA #> <# .SYNOPSIS Converts a source table (format-table) or markdown table to objects. .DESCRIPTION The ConvertFrom-SourceTable cmdlet creates objects from a fixed column source table (format-table) or markdown table. The ConvertFrom-SourceTable cmdlet supports most data types using the following formating and alignment rules: Data that is left aligned will be parsed to the generic column type which is a string by default. The generic column type can be set by prefixing the column name with a standard (PowerShell) cast operator (a data type enclosed in square brackets, e.g.: "[Int]ID") Data that is right aligned will be interpreted (using Invoke-Expression). Definitions: The width of a source table column is outlined by header width, the ruler width and the width of the process data. The process data for single rows supplied through the pipeline (in comparison to a multi line string) is limited from the first row up and till the current row. A right aligned field is outlined by its containing data which has at least one leading white space character and no following white space characters or at least one leading white space character and placed in a right aligned column. A right aligned column is outlined by the header description which has at least one leading white space character and no following white space characters Note that the vertical header ruler of a source table is especially useful for defining the boundaries of a column and how its data is aligned and processed. Parameters No is parameters is required. .PARAMETER HorizontalRuler Defines the horizontal ruler character. The default is a hyphen ("-"). .PARAMETER VerticalRuler Defines the vertical ruler character. The default is a vertical line ("|"). .PARAMETER Markdown Threats the input table as a markdown table (-Markdown) or a source table (-Markdown:$False). By default, the input table is automatically recognized by the vertical ruler. .EXAMPLE $Employee = ConvertFrom-SourceTable ' Department Name Country ---------- ---- ------- Sales Aerts Belgium Engineering Bauer Germany Sales Cook England Engineering Duval France Marketing Evans England Engineering Fischer Germany ' .EXAMPLE $Color = ConvertFrom-SourceTable ' Name Value RGB ------- -------- ----------- Black 0x000000 0,0,0 White 0xFFFFFF 255,255,255 Red 0xFF0000 255,0,0 Lime 0x00FF00 0,255,0 Blue 0x0000FF 0,0,255 Yellow 0xFFFF00 255,255,0 Cyan 0x00FFFF 0,255,255 Magenta 0xFF00FF 255,0,255 Silver 0xC0C0C0 192,192,192 Gray 0x808080 128,128,128 Maroon 0x800000 128,0,0 Olive 0x808000 128,128,0 Green 0x008000 0,128,0 Purple 0x800080 128,0,128 Teal 0x008080 0,128,128 Navy 0x000080 0,0,128 ' PS C:\> $Color | Where {$_.Name -eq "Red"} RGB Name Value --- ---- ----- {255, 0, 0} Red 16711680 .EXAMPLE $Color = ConvertFrom-SourceTable ' |---------|----------|---------------| | Name | Value | RGB | |---------|----------|---------------| | Black | 0x000000 | 0, 0, 0 | | White | 0xFFFFFF | 255, 255, 255 | | Red | 0xFF0000 | 255, 0, 0 | | Lime | 0x00FF00 | 0, 255, 0 | | Blue | 0x0000FF | 0, 0, 255 | | Yellow | 0xFFFF00 | 255, 255, 0 | | Cyan | 0x00FFFF | 0, 255, 255 | | Magenta | 0xFF00FF | 255, 0, 255 | | Silver | 0xC0C0C0 | 192, 192, 192 | | Gray | 0x808080 | 128, 128, 128 | | Maroon | 0x800000 | 128, 0, 0 | | Olive | 0x808000 | 128, 128, 0 | | Green | 0x008000 | 0, 128, 0 | | Purple | 0x800080 | 128, 0, 128 | | Teal | 0x008080 | 0, 128, 128 | | Navy | 0x000080 | 0, 0, 128 | |---------|----------|---------------| ' .EXAMPLE $DateType = ConvertFrom-SourceTable ' Type Value PowerShell Output ---- ------------------ ----------- --------------------- String Hello World "Hello World" Hello World Number 123 123 123 Null Null $Null Boolean True $True True Boolean False $False False DateTime D 1963-10-07T21:47 [DateTime]"1963-10-07 21:47" 1963-10-07 9:47:00 PM Array 1, "Two" @(1, "Two") {1, two} HashTable @{One=1; Two=2} @{One=1; Two=2} {One, Two} Object O @{One=1; Two=2} [PSCustomObject]@{One=1; Two=2} @{One=1; Two=2} ' .EXAMPLE $Directory = ConvertFrom-SourceTable ' Mode [DateTime]LastWriteTime Length Name ---- ----------------------- ------ ---- -a---l 2018-04-16 7:15 PM 4071 ConvertFrom-Table.Tests.ps1 -a---l 2018-04-22 9:19 PM 3104 ConvertFrom-Table.ps1 ' .LINK https://github.com/iRon7/ConvertFrom-SourceTable #> Function ConvertFrom-SourceTable { [OutputType([Object[]])]Param ( [Parameter(ValueFromPipeLine = $True)][String[]]$Table, [Char]$HorizontalRuler = '-', [Char]$VerticalRuler = '|', [Switch]$Markdown ) Begin { Function Null {$Null}; Function True {$True}; Function False {$False}; # Wrappers Function O([HashTable]$Property) {New-Object PSObject -Property $Property} Set-Alias D Get-Date $HRx = "\x{0:X2}" -f [Int]$HorizontalRuler; $VRx = "\x{0:X2}" -f [Int]$VerticalRuler $RulerPattern = "^[$HRx$VRx\s]*$HRx[$HRx$VRx\s]*$" $Header, $Ruler = $Null; $RowIndex = 0; $Columns = @(); $Property = @{} Function Slice([Int]$Start, [Int]$End = [Int]::MaxValue, [Parameter(ValueFromPipeLine = $True, Mandatory = $True)][String]$String) { If ($Start -lt 0) {$End += $Start; $Start = 0} If ($End -gt 0 -and $Start -lt $String.Length) { If ($End -lt $String.Length) {$String.Substring($Start, $End - $Start + 1)} Else {$String.Substring($Start)} } Else {$Null} } Function Fit([String]$Line) { For ($i = 0; $i -lt $Columns.Length; $i++) {$Column = @($Columns)[$i] $Min = If ($i -gt 0) {$Columns[$i - 1].End + 2} Else {0} While ($Column.Start -gt $Min -and $Line[$Column.Start - 1] -Match '\S') {$Column.Start--} $Max = If ($i -lt $Columns.Length - 1) {$Columns[$i + 1].Start - 2} Else {$Line.Length} While ($Column.End -lt $Max -and $Line[$Column.End + 1] -Match '\S') {$Column.End++} $Column.Right = $Header[$Column.Start] -Match '\s' -and $Header[$Column.End] -Match '\S' } } Function TypeName($TypeName) { $Null = $TypeName -Match "(\[(.*)\])?(.+)" $Matches[2], $Matches[3].Trim() } Function ErrorRecord($Row) { $ErrorRecord = $_.Exception.ErrorRecord $Exception = New-Object System.InvalidOperationException @" $($_.Exception.Message) At column '$($Column.Name)' in $(&{If($RowIndex) {"data row $RowIndex"} Else {"the header row"}}) + $($Row -Replace "[\s]", " ") + $(" " * $Column.Start)$("~" * ($Column.End - $Column.Start + 1)) "@ New-Object Management.Automation.ErrorRecord $Exception, $ErrorRecord.FullyQualifiedErrorId, $ErrorRecord.CategoryInfo.Category, $ErrorRecord.TargetObject } } Process { $Table | ForEach-Object { $Lines = $_ -Split '[\r\n]+' $Head = 0; $Count = 0 ForEach ($Line in $Lines) { If ($Line -Match $RulerPattern) {$Ruler = $Line} ElseIf ($Header) { If (!$Columns) { If (!$Ruler) {$Ruler = $Header} If (!$MyInvocation.BoundParameters.Markdown.IsPresent) {$Markdown = $Header -Match $VRx} If ($Markdown) { $Margin = $Header -NotMatch "\w$VRx|$VRx\w" $Columns = ForEach ($Match in ($Header | Select-String "[^$VRx]+\w[^$VRx]+" -AllMatches).Matches) { $Column = @{Value = $Null; Start = $Match.Index + $Margin; End = $Match.Index + $Match.Length - 1 - $Margin; Right = $null} $Column.Type, $Column.Name = TypeName $Match.Value.Trim() $Column.Right = $Header[$Column.Start] -Match '\s' -and $Header[$Column.End] -Match '\S' If ($Column.Type) {$Column.Type = Try {[Type]$Column.Type} Catch{Write-Error -ErrorRecord (ErrorRecord $Header)}} $Column } } Else { $Columns = ForEach ($Match in (&{If ($Ruler) {$Ruler} Else {$Header}} | Select-String "\S+" -AllMatches).Matches) { $Column = @{Value = $Null; Start = $Match.Index; End = $Match.Index + $Match.Length - 1; Right = $null} $Column.Type, $Column.Name = TypeName ($Header | Slice $Column.Start $Column.End).Trim() If ($Column.Type) {$Column.Type = Try {[Type]$Column.Type} Catch{Write-Error -ErrorRecord (ErrorRecord $Header)}} $Column } If (!$Ruler) {Fit $Header} } $Head = $Count } If (!$Markdown) {Fit $Line} } ElseIf ($Line.Trim()) {$Header = $Line} $Count++ } ForEach ($Line in ($Lines | Select-Object -Skip $Head)) { If ($Columns -and $Line.Trim()) { If ($Line -NotMatch $RulerPattern) { $RowIndex++ ForEach($Column in $Columns) { $Field = $Line | Slice $Column.Start $Column.End $Property[$Column.Name] = If ($Field -is [String]) { $Value = $Field.Trim() If ($Value -gt "") { If ($Field -Match '\S$' -and ($Field -Match '^\s' -or $Column.Right)) { Try {Invoke-Expression $Value} Catch {$Value; Write-Error -ErrorRecord (ErrorRecord)} } ElseIf ($Column.Type) { Try {Invoke-Expression "[$($Column.Type)]'$Value'"} Catch {$Value; Write-Error -ErrorRecord (ErrorRecord $Row)} } Else {$Value} } Else {$Value} } Else {$Field} } New-Object PSObject -Property $Property } } } } } }; Set-Alias cfst ConvertFrom-SourceTable |