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Update formatDuration to support fuzzy times

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Ben Roberts
2011-09-24 18:16:55 +01:00
parent 6c5596e436
commit 90f190578d
1 changed files with 65 additions and 23 deletions
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60
source/lib/SihnonFramework/Main.class.php
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@@ -324,30 +324,72 @@ class SihnonFramework_Main {
return $default; return $default;
} }
public static function formatDuration($time) { public static function formatDuration($seconds, $fuzziness = 0) {
if (is_null($time)) { if (is_null($seconds)) {
return 'unknown'; return 'indeterminate time';
} }
$labels = array('seconds', 'minutes', 'hours', 'days', 'weeks', 'months', 'years'); $labels = array('second', 'minute', 'hour', 'day', 'week', 'month', 'year');
$pluralLabels = array('seconds', 'minutes', 'hours', 'days', 'weeks', 'months', 'years');
$limits = array(1, 60, 3600, 86400, 604800, 2592000, 31556926, PHP_INT_MAX); $limits = array(1, 60, 3600, 86400, 604800, 2592000, 31556926, PHP_INT_MAX);
$components = array(0, 0, 0, 0, 0, 0, 0);
$working_time = $time; $workingTime = $seconds;
$result = ""; $result = "";
$ptr = count($labels) - 1; $ptr = count($labels) - 1;
while ($ptr >= 0 && $working_time < $limits[$ptr]) { while ($ptr >= 0 && $workingTime < $limits[$ptr]) {
--$ptr;
}
$mostSignificantPtr = $ptr;
// Convert the value into components using the remaining labels
while ($ptr >= 0) {
$unitTime = floor($workingTime / $limits[$ptr]);
$workingTime -= $unitTime * $limits[$ptr];
$components[$ptr] = $unitTime;
--$ptr; --$ptr;
} }
$componentsUsed = 0;
$approximate = false;
$lastComponent = false;
$ptr = $mostSignificantPtr;
while ($ptr >= 0) { while ($ptr >= 0) {
$unit_time = floor($working_time / $limits[$ptr]); if ($fuzziness && $componentsUsed >= $fuzziness) {
$working_time -= $unit_time * $limits[$ptr]; break;
$result = $result . ' ' . $unit_time . ' ' . $labels[$ptr]; } elseif ($ptr == 0 || ($fuzziness && $componentsUsed == $fuzziness-1)) {
$lastComponent = true;
}
$component = $components[$ptr];
if ($component) {
// If we're going to hide the next value, take its component into account here
if ($lastComponent && $ptr > 0) {
$component += round($components[$ptr-1] / $limits[$ptr]);
$approximate = true;
}
if ($lastComponent && $ptr < $mostSignificantPtr) {
$result .= ' and';
}
$result .= ' ' . $component . ' ' . ($component == 1 ? $labels[$ptr] : $pluralLabels[$ptr]);
}
// Increment even if we've hidden this component because it's zero
// Then we don't end up with overly precise times like '2 years and 1 second'
++$componentsUsed;
--$ptr; --$ptr;
} }
if ($approximate) {
$result = 'approximately ' . $result;
}
return $result; return $result;
} }