1: <?php
  2: /**
  3:  * Copyright 2009-2012 Horde LLC (http://www.horde.org/)
  4:  *
  5:  * See the enclosed file COPYING for license information (LGPL). If you
  6:  * did not receive this file, see http://www.horde.org/licenses/lgpl21.
  7:  *
  8:  * @category Horde
  9:  * @package  Date
 10:  */
 11: 
 12: /**
 13:  * @category Horde
 14:  * @package  Date
 15:  */
 16: class Horde_Date_Repeater_Time extends Horde_Date_Repeater
 17: {
 18:     public $currentTime;
 19:     public $type;
 20:     public $ambiguous;
 21: 
 22:     public function __construct($time)
 23:     {
 24:         $t = str_replace(':', '', $time);
 25: 
 26:         switch (strlen($t)) {
 27:         case 1:
 28:         case 2:
 29:             $hours = (int)$t;
 30:             $this->ambiguous = true;
 31:             $this->type = ($hours == 12) ? 0 : $hours * 3600;
 32:             break;
 33: 
 34:         case 3:
 35:             $this->ambiguous = true;
 36:             $this->type = $t[0] * 3600 + (int)substr($t, 1, 2) * 60;
 37:             break;
 38: 
 39:         case 4:
 40:             $this->ambiguous = (strpos($time, ':') !== false) && ($t[0] != 0) && ((int)substr($t, 0, 2) <= 12);
 41:             $hours = (int)substr($t, 0, 2);
 42:             $this->type = ($hours == 12) ?
 43:                 ((int)substr($t, 2, 2) * 60) :
 44:                 ($hours * 60 * 60 + (int)substr($t, 2, 2) * 60);
 45:             break;
 46: 
 47:         case 5:
 48:             $this->ambiguous = true;
 49:             $this->type = $t[0] * 3600 + (int)substr($t, 1, 2) * 60 + (int)substr($t, 3, 2);
 50:             break;
 51: 
 52:         case 6:
 53:             $this->ambiguous = (strpos($time, ':') !== false) && ($t[0] != 0) && ((int)substr($t, 0, 2) <= 12);
 54:             $hours = (int)substr($t, 0, 2);
 55:             $this->type = ($hours == 12) ?
 56:                 ((int)substr($t, 2, 2) * 60 + (int)substr($t, 4, 2)) :
 57:                 ($hours * 60 * 60 + (int)substr($t, 2, 2) * 60 + (int)substr($t, 4, 2));
 58:             break;
 59: 
 60:         default:
 61:             throw new Horde_Date_Repeater_Exception('Time cannot exceed six digits');
 62:         }
 63:     }
 64: 
 65:     /**
 66:      * Return the next past or future Span for the time that this Repeater represents
 67:      *   pointer - Symbol representing which temporal direction to fetch the next day
 68:      *             must be either :past or :future
 69:      */
 70:     public function next($pointer = 'future')
 71:     {
 72:         parent::next($pointer);
 73: 
 74:         $halfDay = 3600 * 12;
 75:         $fullDay = 3600 * 24;
 76: 
 77:         $first = false;
 78: 
 79:         if (!$this->currentTime) {
 80:             $first = true;
 81:             $midnight = new Horde_Date(array('year' => $this->now->year, 'month' => $this->now->month, 'day' => $this->now->day));
 82:             $yesterdayMidnight = new Horde_Date(array('year' => $this->now->year, 'month' => $this->now->month, 'day' => $this->now->day - 1));
 83:             $tomorrowMidnight = new Horde_Date(array('year' => $this->now->year, 'month' => $this->now->month, 'day' => $this->now->day + 1));
 84: 
 85:             if ($pointer == 'future') {
 86:                 if ($this->ambiguous) {
 87:                     foreach (array($midnight->add($this->type), $midnight->add($halfDay + $this->type), $tomorrowMidnight->add($this->type)) as $t) {
 88:                         if ($t->compareDateTime($this->now) >= 0) {
 89:                             $this->currentTime = $t;
 90:                             break;
 91:                         }
 92:                     }
 93:                 } else {
 94:                     foreach (array($midnight->add($this->type), $tomorrowMidnight->add($this->type)) as $t) {
 95:                         if ($t->compareDateTime($this->now) >= 0) {
 96:                             $this->currentTime = $t;
 97:                             break;
 98:                         }
 99:                     }
100:                 }
101:             } elseif ($pointer == 'past') {
102:                 if ($this->ambiguous) {
103:                     foreach (array($midnight->add($halfDay + $this->type), $midnight->add($this->type), $yesterdayMidnight->add($this->type * 2)) as $t) {
104:                         if ($t->compareDateTime($this->now) <= 0) {
105:                             $this->currentTime = $t;
106:                             break;
107:                         }
108:                     }
109:                 } else {
110:                     foreach (array($midnight->add($this->type), $yesterdayMidnight->add($this->type)) as $t) {
111:                         if ($t->compareDateTime($this->now) <= 0) {
112:                             $this->currentTime = $t;
113:                             break;
114:                         }
115:                     }
116:                 }
117:             }
118: 
119:             if (!$this->currentTime) {
120:                 throw new Horde_Date_Repeater_Exception('Current time cannot be null at this point');
121:             }
122:         }
123: 
124:         if (!$first) {
125:             $increment = $this->ambiguous ? $halfDay : $fullDay;
126:             $this->currentTime->sec += ($pointer == 'future') ? $increment : -$increment;
127:         }
128: 
129:         return new Horde_Date_Span($this->currentTime, $this->currentTime->add(1));
130:     }
131: 
132:     public function this($context = 'future')
133:     {
134:         parent::this($context);
135: 
136:         if ($context == 'none') {
137:             $context = 'future';
138:         }
139:         return $this->next($context);
140:     }
141: 
142:     public function width()
143:     {
144:         return 1;
145:     }
146: 
147:     public function __toString()
148:     {
149:         return parent::__toString() . '-time-' . $this->type;
150:     }
151: 
152: }
153: