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POJoda-Time: Formatting with multiple formats with single Formatter
 

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    <p>I'd like to print durations given in milliseconds with different format specification depending on its size:</p> <pre><code>case (1) "H:mm" if duration &lt; 10 hours case (2) "HH:mm" if duration &lt; 24 hours case (3) "#d HH:mm" else (duration &gt;= 24 hours) </code></pre> <p>which means only 1 hour field digit for durations lower than 10 hours,<br>but 2 hour field digits when having a leading day field!</p> <p>Examples:</p> <pre><code>case (1) "0:45" means 45 minutes, "1:23" means 1 hour and 23 minutes, case (2) "12:05" means 12 hours and 5 minutes and case (3) "1d 05:09" means 1 day, 5 hours and 9 minutes (= 29 hours and 9 minutes). </code></pre> <p>I had tried with</p> <pre><code>object JodaTest { import org.joda.time._ private val pdf = { import format._ val pfb = new PeriodFormatterBuilder() .appendDays.appendSeparator("d ") .printZeroAlways .minimumPrintedDigits(2).appendHours.appendSeparator(":") .appendMinutes new PeriodFormatter(pfb.toPrinter, null) } def durstr(duration: Long): String = pdf.print((new Period(duration)).normalizedStandard) } </code></pre> <p>which leads to</p> <pre><code> 2700000 =&gt; "00:45" but should be "0:45" 4980000 =&gt; "01:23" but should be "1:23" 43500000 =&gt; "12:05" 104940000 =&gt; "1d 05:09" </code></pre> <p>but I don't know how to omit leading zero of two-digit-day-representation in case (1) but simultaneously force to print it in case (3) with same PeriodFormat.</p> <p>Is it possible to do that with a single <code>org.joda.time.format.PeriodFormatter</code>?</p>
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    1. COWouldn't a `minimumPrintedDigits(1)` at first and a `minimumPrintedDigits(2)` before minutes work?
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      1. USDaniel C. Sobral
    2. CO@Daniel Think that minimumPrintedDigits(1) is default (and can be omitted), nevertheless I've tried out, it works fine in first two cases but in case (3) it leaves to `104940000 => "1d 5:09"` while `104940000 => "1d 05:09"` is desired. - P.S.: ... had some trouble with my enter key ;-)
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    3. COAh, I see... Well, it almost did it. :-)
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