*   The instructor of this section/section_meeting.

   *

   * \return

   *   NULL on success, a string on error which is a message for the

   *   user and a valid XHTML fragment.

   */

  {

    if (empty($letter) && (empty($time_start) || !strcmp($time_start, 'none')) && (empty($time_end) || !strcmp($time_end, 'none')) && empty($days)

	&& empty($synonym) && empty($instructor) && empty($location) && (empty($type) || !strcmp($type, 'lecture'))

	&& (empty($slot) || !strcmp($slot, 'default')))

      return;

    if (!empty($credit_hours) && !is_numeric($credit_hours))

      {

        return 'Invalid credit-hour specification of <tt>' . htmlentities($credit_hours) . '</tt> for ' . htmlentities($course_name) . '-' . htmlentities($letter) . '. Please use a floating point number or do not enter anything if the number of credit hours is not known.';

      }

    foreach ($this->courses as $course)

      if (!strcmp($course_name, $course->getName()))

	{

	  $section = $course->section_get($letter);

	  if (!$section)

	    {

              $section = new Section($letter, array(), $synonym, $credit_hours);

	      $course->section_add($section, $slot);

	    }

	  return;

	}

    error_log('Could not find class when parsing schedule from postData: ' . $course_name);

    echo 'Could not find class: ' . $course_name . "<br />\n";

require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . 'class.section_meeting.inc';

/**

 * \brief

 *   Represent a Section associated with a Course.

 */

{

  private $letter;	// Section letter

  private $prof;	// Professor, preserved for Section::__wakeup()

  /* meeting times, array of SectionMeeting */

    $this->letter = $letter;

    $this->meetings = $section_meetings;

    $this->synonym = $synonym;

    $this->credit_hours = (float)$credit_hours;

  }

  public function getLetter()

  {

    return $this->letter;

  }

  /**

 * prof/time/location. At Cedarville, a Section refers to a prof and a

 * _set_ of time/location pairs. The generalization is to make each

 * Section support a list of meeting times/locations.

 */

class SectionMeeting

{

  private $time_start;

  private $time_end;

  private $days;

  private $location;

  private $instructor;

  /**

   * \param $type

   *   The type of meeting this is. For lectures, please use

   *   'lecture'. For labs, please use 'lab'. For others, use the

   *   school's notation.

   * \param $instructor

   *   The instructor for this section meeting.

   */

  {

    $this->days_set($days);

    $this->time_start = $time_start;

    $this->time_end = $time_end;

    $this->location = $location;

    $this->type = $type;

    $this->instructor = $instructor;

  {

    return $this->type;

  }

  /**

   * \brief

   *   Check if this section conflicts with the given section.

   *

   * \param $that

   *   The other section for which I should check for conflicts.

   * \return

   *   TRUE if there is a conflict, FALSE otherwise.

   */

  public function to_json_array()

  {

    static $daymap = array(0 => 'm', 1 => 't', 2 => 'w', 3 => 'h', 4 => 'f', 5 => 's', 6 => 'u');

    $json_array = array(

			'time_end' => $this->time_end,

			'days' => array(),

			'location' => $this->location,

			'instructor' => $this->instructor,

			'type' => $this->type,

			);

   *   The JSON array to parse.

   * \return

   *   A shiny, new SectionMeeting.

   */

  public static function from_json_array(array $json_array)

  {

    $days = '';

    foreach ($json_array['days'] as $day => $meets)

      if ($meets)

	$days .= $day;

  }

}

  public function class_add(Course $class)

  {

    $class_parts = Course::parse($class->getName());

    if (!isset($class_parts['course']))

      throw new ErrorException('I was given a class with an invalid name: `' . $class->getName() . '\'');

    if (!isset($this->departments[$class_parts['department']]))

      $this->departments[$class_parts['department']] = array();

    $department =& $this->departments[$class_parts['department']];

    $department[$class_parts['course']] = $class;

  }

   *   does not have the concept of course slots. Ask binki for help

   *   figuring this out. Course slots are a sort of

   *   inverse/complement to section_meetings.

   */

  public function section_add($dept, $class, Section $section, $title = NULL, $course_slot_id = 'default')

  {

    $dept = strtoupper($dept);

    $class = strtoupper($class);

    if (!isset($this->departments[$dept])

	|| !isset($this->departments[$dept][$class]))

      {

   * \param $credit_hours

   *   The number of credit hours of the associated course or a

   *   negative value if unknown.

   */

  public function section_meeting_add($dept, $course, $title, $section, $synonym, $section_meeting, $course_slot_id = 'default', $credit_hours = -1.0)

  {

    $dept = strtoupper($dept);

    $course = strtoupper($course);

    if (empty($this->departments[$dept][$course]))

      $course_obj = NULL;

    else

    return $this->time_start;

  }

  /**

   * \brief

   *   Get a semester's year.

   */

  public function year_get()

  {

    return $this->year;

  }

				    'h' => !empty($section['days'][3]), 'f' => !empty($section['days'][4]),

				    's' => !empty($section['days'][5])))

		. ', ' . json_encode($section['professor']) . ', '

		. json_encode($section['location']) . ', '

		. json_encode($section['type']) . ', '

		. json_encode($section['slot']) . ', '

	  $my_hc .= PHP_EOL;

	}

  }

else

  {

    $default_courses = school_default_courses($school);

		$allClasses->addCourse($course['name'], $course['title']);

				foreach($course as $section)

				  /* Skip the section name, which isn't a section */

					if(is_array($section))

					  {

					    if ($error_string !== NULL)

					      $errors[] = $error_string;

					  }

			}

		}

	  $time_end = school_crawl_time_format(strptime($meeting_info_matches[7], '%I:%M%p'));

	  $meeting_place = $meeting_info_matches[8];

	  foreach (array('date_start', 'date_end', 'meeting_type', 'days', 'time_start', 'time_end', 'meeting_place', 'meeting_type') as $var)

	    school_crawl_logf($school_crawl_log, 10, "%s:%s", $var, ${$var});

	  $date_start_time = strptime($date_start, '%m/%d/%Y');

	  $date_end_time = strptime($date_end, '%m/%d/%Y');

	    }

	}

      if (!preg_match(';Page ([0-9]+) of ([0-9]+)\</td\>$;m', $html, $pages))

	{

	  school_crawl_logf($school_crawl_log, 0, 'Unable to determine the number of pages in this Calvin resultset');

	  break;

		    $time_start_text, $time_end_text);

	    continue;

	  }

	$days = school_crawl_days_str_format($school_crawl_log, $children->item($section_offsets['days'])->textContent);

	$section->meeting_add(new SectionMeeting($days, school_crawl_time_format($time_start), school_crawl_time_format($time_end),

						 $children->item($section_offsets['location'])->textContent,

						 'lecture',

      }

    }

  return 0;

}

	      $time_end = school_crawl_time_format(strptime($meeting_matches[5] . 'M', '%I:%M%p'));

	      $room = $meeting_matches[2];

	      $type = school_crawl_meeting_type($meeting_matches[1]);

	      /* check for daterange information -- i.e., if the first regex successfully matched: */

	      if (count($meeting_matches) > 7)

		{

		  $date_start = school_crawl_gmmktime(strptime($meeting_matches[6], '%m/%d/%y'), CEDARVILLE_TIMEZONE_OFFSET);

		  $date_end = school_crawl_gmmktime(strptime($meeting_matches[7], '%m/%d/%y'), CEDARVILLE_TIMEZONE_OFFSET);

		}

	      /*

	       * The tables are made for humans, not computers. If

	       * there aren't enough instructors for the number of

	       * section meetings, just reuse the first listed

	       * instructor:

	       */

	      if ($meeting_i >= count($instructors))

		$instructors[$meeting_i] = $instructors[0];

	      $meetings[] = new SectionMeeting($days, $time_start, $time_end,

	      $meeting_i ++;

	    }

	  $semester->section_add($section_parts['department'], $section_parts['course'],

				 new Section($section_parts['section'], $meetings,

					  $section_csv[$fields['Title']]));

	  school_crawl_logf($school_crawl_log, 8, "Course %s-%s-%s has a section meeting with a TBA time, adding dummy course.",

			    $subject_id, $course_id, $section_id);

	  continue;

	}

      if (preg_match(',(\\d\\d)/(\\d\\d)-(\\d\\d)/(\\d\\d),', $section_csv[$fields['Date']], $matches))

	{

	  list(, $m_start, $d_start, $m_end, $d_end) = $matches;

	  if ($m_start && $d_start && $m_end && $d_end)

	    {

	      $y_start = $y_end = $semester->year_get();

	      if ($m_end < $m_start)

		$y_end ++;

	    }

	}

      if (trim($section_csv[$fields['U']]))

	school_crawl_logf($school_crawl_log, 0, "Section %d has sunday.", $synonym);

      $days = school_crawl_days_format($school_crawl_log, array_filter(array_slice($section_csv, $fields['M'], 7), '_hope_crawl_days_filter'));

      if (preg_match('/(^|[^a-z])lab($|o|[^a-z])/i', $title))

	$type = 'lab';

      $section_meeting = new SectionMeeting($days, $time_start, $time_end,

					    $location,

					    $type,

      $semester->section_meeting_add($subject_id,

				     $course_id,

				     $title,

				     $section_id,

				     $synonym,

				     $section_meeting,

       * listing of courses. Perform some accumulation here.

       */

      foreach (array('Instructor') as $key)

	if (strlen($curr_value = trim($row[$fields[$key]])))

	  $row_accumulation[$key] = $curr_value;

      /*

       */

      $date_start_tm = strptime(trim($row[$fields['Start Date']]), '%m/%d/%Y');

      $date_end_tm = strptime(trim($row[$fields['End Date']]), '%m/%d/%Y');

      if (!empty($date_start_tm) && !empty($date_end_tm))

	{

	  $date_start = school_crawl_gmmktime($date_start_tm);

	  $date_end = school_crawl_gmmktime($date_end_tm);

	    {

	    }

	}

    }

}

/**

 * \brief

 *   Try to turn a umich-formatted time into something usable.

 * GNU Affero General Public License for more details.

 *

 * You should have received a copy of the GNU Affero General Public License

 * along with SlatePermutate.  If not, see <http://www.gnu.org/licenses/>.

 */

/**

 * \brief

 *   The next course_i value that will be produced when add_class() is

 *   called.

 *

}

/**

 * \brief

 *   Add a section to a class.

 */

{

    var snum = last_section_i ++;

    var cssclasses = 'section class' + cnum + ' ' + safe_css_class('slot-' + slot);

    var last_tr;

	/*

<td class="cbrow"><input type="checkbox" class="daysRequired" name="postData[' + cnum + '][' + snum + '][days][4]" value="1" ' + (days.f ? 'checked="checked"' : '') + ' /></td>\

<td class="cbrow"><input type="checkbox" class="daysRequired" name="postData[' + cnum + '][' + snum + '][days][5]" value="1" ' + (days.s ? 'checked="checked"' : '') + ' /></td>' +

	'<td class="removeCell"><div><button class="gray section-meeting-delete">x</button></div></td><td class="emptyCell">' +

	'<input class="section-location-entry" type="hidden" name="postData[' + cnum + '][' + snum + '][location]" />' +

	'<input class="section-type-entry" type="hidden" name="postData[' + cnum + '][' + snum + '][type]" />' +

		'<input class="section-credit-hours-entry" type="hidden" name="postData[' + cnum + '][' + snum + '][credit_hours]" />' +

	'</td></tr>';

    /*

     * Try to append this section to the last section in its

     * associated CourseSlot...

     */

    section_tr.find('.section-synonym-entry').val(synonym);

    section_tr.find('.section-slot-entry').val(slot);

    section_tr.find('.profName').val(instructor);

    section_tr.find('.section-location-entry').val(location);

    section_tr.find('.section-type-entry').val(type);

	section_tr.find('.section-credit-hours-entry').val(credit_hours);

    /* unhide the saturday and sunday columns if they're used by autocomplete data */

	if (days.u)

		jQuery('#jsrows col.sunday').removeClass('collapsed');

    if (days.s)

	jQuery('#jsrows col.saturday').removeClass('collapsed');

	credit_hours_change(cnum);

    return last_section_i - 1;

}

function add_section(cnum)

{

    if (cnum == slate_permutate_course_free)

	course_free_check(cnum);

    return section_i;

}

/**

    jQuery.each(data.sections, function(i, section)

		{

		    if (!section.slot)

			section.slot = 'default';

			if (section.credit_hours === undefined)

				section.credit_hours = -1;

		});

    /*

     * Handle course-level interdependencies.

     */

    if (data.dependencies)