wcal.psm1
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#requires -version 6 Set-Alias -Name cal -Value Get-Calendar function Get-Calendar { <# .SYNOPSIS Display a calendar of the selected month. .DESCRIPTION `Get-Calendar` (shortly `cal`) just helps to vizualize a month days. .PARAMETER Month Set a month number. The current month number is set by default. .PARAMETER Year Set a year number. The current year number is set by default. .PARAMETER Invert Indicates that the week starts on Monday. .PARAMETER Vertical Indicates that an alternative layout should be used. .INPUTS System.Int32 - Month System.Int32 - Year Other parameters - System.Management.Automation.SwitchParameter .OUTPUTS System.Object[] .EXAMPLE PS C:\> Get-Calendar This prints the current month calendar. .EXAMPLE PS C:\> Get-Calendar -Month 10 -Invert October 2019 Mo Tu We Th Fr Sa Su 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 .EXAMPLE PS C:\> Get-Calendar -Vertical -Year 2021 September 2021 Su 5 12 19 26 Mo 6 13 20 27 Tu 7 14 21 28 We 1 8 15 22 29 Th 2 9 16 23 30 Fr 3 10 17 24 Sa 4 11 18 25 .NOTES MIT .LINK None #> [CmdletBinding()] param( [Parameter(Position=0)] [ValidateRange(1, 12)] [Alias('m')] [Int32]$Month = ($script:d = Get-Date).Month, [Parameter(Position=1)] [ValidateRange(1970, 3000)] [Alias('y')] [Int32]$Year = (.({Get-Date},{$d})[(Test-Path variable:d)]).Year, [Parameter()][Alias('i')][Switch]$Invert, [Parameter()][Alias('v')][Switch]$Vertical ) begin { $day = "$($d.Day)".PadLeft(2, [Char]32) $raw, $dfi = $host.UI.RawUI, (Get-Culture en-US).DateTimeFormat $arr, $cal = $dfi.ShortestDayNames, $dfi.Calendar $dow = [Int32]$cal.GetDayOfWeek("$Month.1.$Year") if ($Invert) { $arr = $arr[1..$arr.Length] + $arr[0] if (($dow = --$dow) -lt 0) { $dow += 7 } } } process { $cap = "`e[35;1m$($dfi.MonthNames[$Month - 1]) $Year`e[32;0m" $cap = "$([Char]32)" * [Math]::Round((34 - $cap.Length) / 2) + $cap if ($dow -ne 0) { for ($i = 0; $i -lt $dow; $i++) { $arr += "$([Char]32)" * 2 }} $arr += (1..$cal.GetDaysInMonth($Year, $Month)).ForEach{ "$_".PadLeft(2, [Char]32) } } end { $cap .({ $i = 0 $seq = (,7 * 6).ForEach{$_ * (++$i)} for ($i = 0; $i -lt 7; $i++) { if (($itm = $arr[,$i + $seq]) -contains $day) { $cur, $pos = $raw.CursorPosition, $itm } $itm -join [Char]32 $seq = $seq.ForEach{$_ + 1} } },{ for ($i = 0; $i -lt $arr.Length; $i += 6) { if (($itm = $arr[$i..($i + 6)]) -contains $day) { $cur, $pos = $raw.CursorPosition, $itm } $itm -join [Char]32 $i++ } })[!$Vertical] if ($Month -ne $d.Month -or $Year -ne $d.Year) { return } $cur.X = ($x = $pos.IndexOf($day)) * 2 + $x $raw.SetBufferContents($cur, $raw.NewBufferCellArray( $day, [ConsoleColor]::Black, [ConsoleColor]::White )) } } Export-ModuleMember -Alias cal -Function Get-Calendar |