Calendar: Difference between revisions

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=={{header|Kotlin}}==

{{trans|D}}

<lang scala>import java.text.*

import java.util.*

import java.io.PrintStream

internal fun PrintStream.printCalendar(year: Int, nCols: Byte, locale: Locale?) {

if (nCols < 1 || nCols > 12)

throw IllegalArgumentException("Illegal column width.")

val w = nCols * 24

val nRows = Math.ceil(12.0 / nCols).toInt()

val date = GregorianCalendar(year, 0, 1)

var offs = date.get(Calendar.DAY_OF_WEEK) - 1

val days = DateFormatSymbols(locale).shortWeekdays.slice(1..7).map { it.slice(0..1) }.joinToString(" ", " ")

val mons = Array(12) { Array(8) { "" } }

DateFormatSymbols(locale).months.slice(0..11).forEachIndexed { m, name ->

val len = 11 + name.length / 2

val format = MessageFormat.format("%{0}s%{1}s", len, 21 - len)

mons[m][0] = String.format(format, name, "")

mons[m][1] = days

val dim = date.getActualMaximum(Calendar.DAY_OF_MONTH)

for (d in 1..42) {

val isDay = d > offs && d <= offs + dim

val entry = if (isDay) String.format(" %2s", d - offs) else " "

if (d % 7 == 1)

mons[m][2 + (d - 1) / 7] = entry

else

mons[m][2 + (d - 1) / 7] += entry

}

offs = (offs + dim) % 7

date.add(Calendar.MONTH, 1)

}

printf("%" + (w / 2 + 10) + "s%n", "[Snoopy Picture]")

printf("%" + (w / 2 + 4) + "s%n%n", year)

for (r in 0..nRows - 1) {

for (i in 0..7) {

var c = r * nCols

while (c < (r + 1) * nCols && c < 12) {

printf(" %s", mons[c][i])

c++

}

println()

}

println()

}

}

fun main(args: Array<String>) {

System.out.printCalendar(1969, 3, Locale.US)

}</lang>

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See D output.

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