fun buildRfc5322Formatter()

in runtime/runtime-core/jvm/src/aws/smithy/kotlin/runtime/time/InstantJVM.kt [160:213]

• 49 lines of code
• 1 McCabe index (conditional complexity)

fun buildRfc5322Formatter(): DateTimeFormatter {
    // manually code maps to ensure correct data always used
    // (locale data can be changed by application code)
    val dow: Map<Long, String> = mapOf(
        1L to "Mon",
        2L to "Tue",
        3L to "Wed",
        4L to "Thu",
        5L to "Fri",
        6L to "Sat",
        7L to "Sun"
    )

    val moy: Map<Long, String> = mapOf(
        1L to "Jan",
        2L to "Feb",
        3L to "Mar",
        4L to "Apr",
        5L to "May",
        6L to "Jun",
        7L to "Jul",
        8L to "Aug",
        9L to "Sep",
        10L to "Oct",
        11L to "Nov",
        12L to "Dec"
    )

    val formatter = DateTimeFormatterBuilder()
        .parseCaseInsensitive()
        .parseLenient()
        .optionalStart()
        .appendText(ChronoField.DAY_OF_WEEK, dow)
        .appendLiteral(", ")
        .optionalEnd()
        .appendValue(ChronoField.DAY_OF_MONTH, 2, 2, SignStyle.NOT_NEGATIVE)
        .appendLiteral(' ')
        .appendText(ChronoField.MONTH_OF_YEAR, moy)
        .appendLiteral(' ')
        .appendValue(ChronoField.YEAR, 4)
        .appendLiteral(' ')
        .appendValue(ChronoField.HOUR_OF_DAY, 2)
        .appendLiteral(':')
        .appendValue(ChronoField.MINUTE_OF_HOUR, 2)
        .optionalStart()
        .appendLiteral(':')
        .appendValue(ChronoField.SECOND_OF_MINUTE, 2)
        .optionalEnd()
        .appendLiteral(' ')
        .appendOffset("+HHMM", "GMT")
        .toFormatter()

    return formatter.withChronology(IsoChronology.INSTANCE)
}