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authorMarkus Warg <markus@mawaunix.mawa.sls>2010-03-31 16:43:49 +0200
committerMarkus Warg <markus@mawaunix.mawa.sls>2010-03-31 16:43:49 +0200
commit4f4c5ce3ccf0370f926d75e700e8b0bd2208f3f6 (patch)
tree82cb017ac68772ea36c0f522ec019bf14fbdc77a /manager/library/date/HumanReadableTime.php
parent8398c9048d34a1f51212ae770998fc082fc93b69 (diff)
downloadcacert-mgr-4f4c5ce3ccf0370f926d75e700e8b0bd2208f3f6.tar.gz
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initial setup of framework code
enabled features * login * crt login * top / left menu * logging * db layer
Diffstat (limited to 'manager/library/date/HumanReadableTime.php')
-rw-r--r--manager/library/date/HumanReadableTime.php140
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diff --git a/manager/library/date/HumanReadableTime.php b/manager/library/date/HumanReadableTime.php
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+<?php
+
+/**
+ * class that provides methods to convert human readable time / interval length
+ * expressions into other formats
+ *
+ * @author markus
+ * $Id: HumanReadableTime.php 92 2010-03-10 11:43:15Z markus $
+ */
+
+require_once(LIBRARY_PATH . '/date/exception.HumanReadableTimeException.php');
+
+class HumanReadableTime {
+ /**
+ * normalize an HRT string, convert from HRT to seconds and then convert back to
+ * HRT
+ * @param string $hrt
+ * @param string $maxunit
+ * @return string
+ */
+ public static function NormalizeHRT($hrt, $maxunit = 'w') {
+ return self::Seconds2HR(self::HR2Seconds($hrt), $maxunit);
+ }
+
+ /**
+ * convert string / interger which contains an interval length to
+ * human readable format (1w2d7h)
+ *
+ * if $maxunit is set, it defines the biggest unit in output (i.e. $maxunit = 'h' will
+ * allow only hms)
+ *
+ * @param string|integer $seconds
+ * @param string $maxunit
+ * @return string
+ */
+ public static function Seconds2HR($seconds, $maxunit = 'w') {
+ $maxunit = trim(strtolower($maxunit));
+ $allowed = array('w' => 0, 'd' => 0, 'h' => 0, 'm' => 0, 's' => 0);
+ if (!in_array($maxunit, array_keys($allowed), true))
+ throw new HumanReadableTimeException('illegal value for maxunit: "' . $maxunit . '"');
+ foreach ($allowed as $key => $value) {
+ if ($maxunit == $key)
+ break;
+ unset($allowed[$key]);
+ }
+
+ $seconds = intval($seconds);
+ $hrt = '';
+ foreach ($allowed as $key => $value) {
+ switch ($key) {
+ case 'w':
+ $tmp = intval($seconds / (7*86400));
+ if ($tmp > 0)
+ $seconds %= (7*86400);
+ $allowed[$key] += $tmp;
+ break;
+ case 'd':
+ $tmp = intval($seconds / (86400));
+ if ($tmp > 0)
+ $seconds %= (86400);
+ $allowed[$key] += $tmp;
+ break;
+ case 'h':
+ $tmp = intval($seconds / (3600));
+ if ($tmp > 0)
+ $seconds %= (3600);
+ $allowed[$key] += $tmp;
+ break;
+ case 'm':
+ $tmp = intval($seconds / (60));
+ if ($tmp > 0)
+ $seconds %= (60);
+ $allowed[$key] += $tmp;
+ break;
+ case 's':
+ $allowed[$key] += $seconds;
+ break;
+ }
+ }
+
+ $hrt = '';
+ foreach ($allowed as $key => $value) {
+ if ($value > 0)
+ $hrt .= sprintf('%d%s', $value, $key);
+ }
+ return $hrt;
+ }
+
+ /**
+ * parse a string of 3h2m7s and return the number of seconds as integer
+ * add "s" to the end of the number if $addsecond is set to true
+ * @param string $hr
+ * @param boolean $addsecond
+ * @return integer|string
+ */
+ public static function HR2Seconds($hr, $addsecond = false) {
+ $hr = trim($hr);
+ if ($hr == '') {
+ if ($addsecond === true)
+ return '0s';
+ else
+ return 0;
+ }
+
+ $hr = strtolower($hr);
+
+ $matches = array();
+ if (preg_match_all('/([0-9]*)([wdhms])/', $hr, $matches, PREG_SET_ORDER) > 0) {
+ $interval = 0;
+ for ($i = 0; $i < count($matches); $i++) {
+ switch ($matches[$i][2]) {
+ case 'w':
+ $interval += $matches[$i][1] * 7 * 86400;
+ break;
+ case 'd':
+ $interval += $matches[$i][1] * 86400;
+ break;
+ case 'h':
+ $interval += $matches[$i][1] * 3600;
+ break;
+ case 'm':
+ $interval += $matches[$i][1] * 60;
+ break;
+ case 's':
+ $interval += $matches[$i][1];
+ break;
+ }
+ }
+ if ($addsecond === true)
+ return sprintf('%ds', $interval);
+ else
+ return $interval;
+ }
+
+ if ($addsecond === true)
+ return '0s';
+ else
+ return 0;
+ }
+}