ShriTestCalendar

3.0.0

ShriTestCalendar.psm1

function Show-Calendar {
param(
    [DateTime] $start = [DateTime]::Today,
    [DateTime] $end = $start,
    $firstDayOfWeek,
    [int[]] $highlightDay,
    [string[]] $highlightDate = [DateTime]::Today.ToString()
    )

## Determine the first day of the start and end months.
$start = New-Object DateTime $start.Year,$start.Month,1
$end = New-Object DateTime $end.Year,$end.Month,1

## Convert the highlighted dates into real dates.
[DateTime[]] $highlightDate = [DateTime[]] $highlightDate

## Retrieve the DateTimeFormat information so that the
## calendar can be manipulated.
$dateTimeFormat  = (Get-Culture).DateTimeFormat
if($firstDayOfWeek)
{
    $dateTimeFormat.FirstDayOfWeek = $firstDayOfWeek
}

$currentDay = $start

## Process the requested months.
while($start -le $end)
{
    ## Return to an earlier point in the function if the first day of the month
    ## is in the middle of the week.
    while($currentDay.DayOfWeek -ne $dateTimeFormat.FirstDayOfWeek)
    {
        $currentDay = $currentDay.AddDays(-1)
    }

    ## Prepare to store information about this date range.
    $currentWeek = New-Object PsObject
    $dayNames = @()
    $weeks = @()

    ## Continue processing dates until the function reaches the end of the month.
    ## The function continues until the week is completed with
    ## days from the next month.
    while(($currentDay -lt $start.AddMonths(1)) -or
        ($currentDay.DayOfWeek -ne $dateTimeFormat.FirstDayOfWeek))
    {
        ## Determine the day names to use to label the columns.
        $dayName = "{0:ddd}" -f $currentDay
        if($dayNames -notcontains $dayName)
        {
            $dayNames += $dayName
        }

        ## Pad the day number for display, highlighting if necessary.
        $displayDay = " {0,2} " -f $currentDay.Day

        ## Determine whether to highlight a specific date.
        if($highlightDate)
        {
            $compareDate = New-Object DateTime $currentDay.Year,
                $currentDay.Month,$currentDay.Day
            if($highlightDate -contains $compareDate)
            {
                $displayDay = "*" + ("{0,2}" -f $currentDay.Day) + "*"
            }
        }

        ## Otherwise, highlight as part of a date range.
        if($highlightDay -and ($highlightDay[0] -eq $currentDay.Day))
        {
            $displayDay = "[" + ("{0,2}" -f $currentDay.Day) + "]"
            $null,$highlightDay = $highlightDay
        }

        ## Add the day of the week and the day of the month as note properties.
        $currentWeek | Add-Member NoteProperty $dayName $displayDay

        ## Move to the next day of the month.
        $currentDay = $currentDay.AddDays(1)

        ## If the function reaches the next week, store the current week
        ## in the week list and continue.
        if($currentDay.DayOfWeek -eq $dateTimeFormat.FirstDayOfWeek)
        {
            $weeks += $currentWeek
            $currentWeek = New-Object PsObject
        }
    }

    ## Format the weeks as a table.
    $calendar = $weeks | Format-Table $dayNames -AutoSize | Out-String

    ## Add a centered header.
    $width = ($calendar.Split("'n") | Measure-Object -Maximum Length).Maximum
    $header = "{0:MMMM yyyy}" -f $start
    $padding = " " * (($width - $header.Length) / 2)
    $displayCalendar = " 'n" + $padding + $header + "'n " + $calendar
    $displayCalendar.TrimEnd()

    ## Move to the next month.
    $start = $start.AddMonths(1)
Write-host    "Test package for Publishing"
}
}
Show-Calendar