icalcreator.class.php

完美的在线教育系统

      case 'METHOD':
        $this->method   = null;
        $return = TRUE;
        break;
      default:
        if( $propName != 'X-PROP' ) {
          if( !isset( $this->xprop[$propName] )) return FALSE;
          unset( $this->xprop[$propName] );
          $return = TRUE;
        }
        else {
          if( count( $this->xprop ) <= $propix )  return FALSE;
          $xpropno = 0;
          foreach( $this->xprop as $xpropkey => $xpropvalue ) {
            if( $propix == $xpropno ) {
              unset( $this->xprop[$xpropkey] );
              $return = TRUE;
              break 2;
            }
            else
              $xpropno++;
          }
        }
    }
    return $return;
  }
/**
 * get calendar property value/params
 *
 * @author Kjell-Inge Gustafsson <[e-mail]>
 * @since 2.0.8 - 2007-07-07
 * @param string $propName, optional
 * @param int @propix, optional, if specific property is wanted in case of multiply occurences
 * @param bool $inclParam=FALSE
 * @return mixed
 */
  function getProperty( $propName=FALSE, $propix=FALSE, $inclParam=FALSE ) {
    $propName = ( $propName ) ? strtoupper( $propName ) : 'X-PROP';
    if( !$propix )
      $propix = ( isset( $this->propix[$propName] )) ? $this->propix[$propName] + 2 : 1;
    $this->propix[$propName] = --$propix;
    switch( $propName ) {
      case 'CALSCALE':
        if( 0 < $propix ) return FALSE;
        return ( !empty( $this->calscale )) ? $this->calscale : null;
        break;
      case 'METHOD':
        if( 0 < $propix ) return FALSE;
        return ( !empty( $this->method )) ? $this->method : null;
        break;
      case 'PRODID':
        if( 0 < $propix ) return FALSE;
        if( empty( $this->prodid ))
          $this->_makeProdid();
        return $this->prodid;
        break;
      case 'VERSION':
        if( 0 < $propix ) return FALSE;
        return ( !empty( $this->version )) ? $this->version : null;
        break;
      default:
        if( $propName != 'X-PROP' ) {
          if( !isset( $this->xprop[$propName] )) return FALSE;
          return ( $inclParam ) ? array( $propName, $this->xprop[$propName] )
                                : array( $propName, $this->xprop[$propName]['value'] );
        }
        else {
          if( count( $this->xprop ) <= $propix )  return FALSE;
          $xpropno = 0;
          foreach( $this->xprop as $xpropkey => $xpropvalue ) {
            if( $propix == $xpropno )
              return ( $inclParam ) ? array( $xpropkey, $this->xprop[$xpropkey] )
                                    : array( $xpropkey, $this->xprop[$xpropkey]['value'] );
            else
              $xpropno++;
          }
          return FALSE; // not found ??
        }
    }
    return FALSE;
  }
/**
 * general vcalendar property setting
 *
 * @author Kjell-Inge Gustafsson <[e-mail]>
 * @since 2.2.13 - 2007-10-23
 * @param mixed $args variable number of function arguments,
 *                    first argument is ALWAYS component name,
 *                    second ALWAYS component value!
 * @return void
 */
  function setProperty () {
    $numargs    = func_num_args();
    if( 1 >= $numargs )
      return FALSE;
    $arglist    = func_get_args();
    if( !$this->getConfig( 'allowEmpty' ) && ( !isset( $arglist[1] ) || empty( $arglist[1] )))
      return;
    $arglist[0] = strtoupper( $arglist[0] );
    for( $argix=$numargs; $argix < 3; $argix++ ) {
      if( !isset( $arglist[$argix] ))
        $arglist[$argix] = null;
    }
    switch( $arglist[0] ) {
      case 'CALSCALE':
        $this->setCalscale( $arglist[1] );
        break;
      case 'METHOD':
        $this->setMethod( $arglist[1] );
        break;
      case 'VERSION':
        $this->setVersion( $arglist[1] );
        break;
      default:
        $this->setXprop( $arglist[0], $arglist[1], $arglist[2] );
        break;
    }
  }
/*********************************************************************************/
/**
 * get vcalendar config values or * calendar components
 *
 * @author Kjell-Inge Gustafsson <[e-mail]>
 * @since 2.2.13 - 2007-12-30
 * @param string $config
 * @return value
 */
  function getConfig( $config ) {
    switch( strtoupper( $config )) {
      case 'ALLOWEMPTY':
        return $this->allowEmpty;
        break;
      case 'COMPSINFO':
        unset( $this->compix );
        $info = array();
        foreach( $this->components as $cix => $component ) {
          unset( $component->propix );
          $info[$cix]['ordno'] = $cix + 1;
          $info[$cix]['type']  = $component->objName;
          $info[$cix]['uid']   = $component->getProperty( 'uid' );
          $info[$cix]['props'] = $component->getConfig( 'propinfo' );
          $info[$cix]['sub']   = $component->getConfig( 'compsinfo' );
          unset( $component->propix );
        }
        return $info;
        break;
      case 'DELIMITER':
        return $this->delimiter;
        break;
      case 'DIRECTORY':
        if( empty( $this->directory ))
          $this->directory = '.';
        return $this->directory;
        break;
      case 'DIRFILE':
        return $this->getConfig( 'directory' ).$this->getConfig( 'delimiter' ).$this->getConfig( 'filename' );
        break;
      case 'FILEINFO':
        return array( $this->getConfig( 'directory' )
                    , $this->getConfig( 'filename' )
                    , $this->getConfig( 'filesize' ));
        break;
      case 'FILENAME':
        if( empty( $this->filename )) {
          if( 'xcal' == $this->format )
            $this->filename = date( 'YmdHis' ).'.xml'; // recommended xcs.. .
          else
            $this->filename = date( 'YmdHis' ).'.ics';
        }
        return $this->filename;
        break;
      case 'FILESIZE':
        $size    = 0;
        if( empty( $this->url )) {
          $dirfile = $this->getConfig( 'dirfile' );
          if( FALSE === ( $size = filesize( $dirfile )))
            $size = 0;
          clearstatcache();
        }
        return $size;
        break;
      case 'FORMAT':
        return $this->format;
        break;
      case 'LANGUAGE':
         /* get language for calendar component as defined in [RFC 1766] */
        return $this->language;
        break;
      case 'NL':
      case 'NEWLINECHAR':
        return $this->nl;
        break;
      case 'UNIQUE_ID':
        return $this->unique_id;
        break;
      case 'URL':
        if( !empty( $this->url ))
          return $this->url;
        else
          return FALSE;
        break;
    }
  }
/**
 * general vcalendar config setting
 *
 * @author Kjell-Inge Gustafsson <[e-mail]>
 * @since 2.2.13 - 2007-12-30
 * @param string $config
 * @param string $value
 * @return void
 */
  function setConfig( $config, $value ) {
    switch( strtoupper( $config )) {
      case 'ALLOWEMPTY':
        $this->allowEmpty = $value;
        break;
      case 'DELIMITER':
        $this->delimiter = $value;
        break;
      case 'DIRECTORY':
        $value   = trim( $value );
        $nl      = $this->getConfig('delimiter');
        if( $nl == substr( $value, ( 0 - strlen( $nl ))))
          $value = substr( $value, 0, ( strlen( $value ) - strlen( $nl )));
        if( is_dir( $value )) {
            /* local directory */
          clearstatcache();
          $this->directory = $value;
          $this->url       = null;
          return TRUE;
        }
        else
          return FALSE;
        break;
      case 'FILENAME':
        $value   = trim( $value );
        if( !empty( $this->url )) {
            /* remote directory+file - URL */
          $this->filename = $value;
          return TRUE;
        }
        $dirfile = $this->getConfig( 'directory' ).$this->getConfig( 'delimiter' ).$value;
        if( file_exists( $dirfile )) {
            /* local existing file */
          if( is_readable( $dirfile ) || is_writable( $dirfile )) {
            clearstatcache();
            $this->filename = $value;
            return TRUE;
          }
          else
            return FALSE;
        }
        elseif( FALSE !== touch( $dirfile )) {
            /* new local file created */
          $this->filename = $value;
          return TRUE;
        }
        else
          return FALSE;
        break;
      case 'FORMAT':
        $value   = trim( $value );
        if( 'xcal' == strtolower( $value )) {
          $this->format             = 'xcal';
          $this->attributeDelimiter = $this->nl;
          $this->valueInit          = null;
        }
        else {
          $this->format             = null;
          $this->attributeDelimiter = ';';
          $this->valueInit          = ':';
        }
        break;
      case 'LANGUAGE':
         // set language for calendar component as defined in [RFC 1766]
        $value   = trim( $value );
        $this->language = $value;
        break;
      case 'NL':
      case 'NEWLINECHAR':
        $this->nl = $value;
        break;
      case 'UNIQUE_ID':
        $value   = trim( $value );
        $this->unique_id = $value;
        break;
      case 'URL':
            /* remote file - URL */
        $value     = trim( $value );
        $value     = str_replace( 'HTTP://',   'http://', $value );
        $value     = str_replace( 'WEBCAL://', 'http://', $value );
        $value     = str_replace( 'webcal://', 'http://', $value );
        $this->url = $value;
        $this->directory = null;
        $parts     = pathinfo( $value );
        return $this->setConfig( 'filename',  $parts['basename'] );
        break;
    }
  }
/*********************************************************************************/
/**
 * validDate
 *
 * convert input parameters to (valid) iCalcreator date in array format (or FALSE)
 * if $utc=TRUE and $tz = utc offset ([[+/]-]HHmm) input (local) date array + UTC offset
 * returns ouput in UTC format date
 *
 * @author Kjell-Inge Gustafsson <[e-mail]>
 * @since 2.2.2 - 2007-07-29
 * @param mixed $year
 * @param mixed $month optional
 * @param int $day optional
 * @param int $hour optional
 * @param int $min optional
 * @param int $sec optional
 * @param mixed $tz optional
 * @param bool $utc optional
 * @return bool false / array $date
 */
  function validDate( $year, $month=FALSE, $day=FALSE, $hour=FALSE, $min=FALSE, $sec=FALSE, $tz=FALSE, $utc=FALSE ) {
    $input   = array();
    $toolbox = new calendarComponent();
    $parno   = null;
    if( is_array( $year ) && isset( $year['timestamp'] )) {
      $input        = $toolbox->_date_time_string( date( 'Y-m-d H:i:s', $year['timestamp'] ), 6 );
      $input['tz']  = ( isset( $year['tz'] )) ? $year['tz'] : null;
      $utc = ( TRUE === $month ) ? TRUE : FALSE;
    }
    elseif( is_array( $year ) && ( in_array( count( $year ), array( 3, 4, 6, 7 )))) {
      if( isset( $year['tz'] ) || ( 4 == count( $year )) || ( 7 == count( $year )))
        $parno = 7;
      elseif( isset( $year['hour'] ) || isset( $year['min'] ) || isset( $year['sec'] ) ||
            ( 6 == count( $year )))
        $parno = 6;
      else
        $parno = 3;
      $input = $toolbox->_date_time_array( $year, $parno );
      $utc = ( TRUE === $month ) ? TRUE : FALSE;
    }
    elseif( 8 <= strlen( trim( $year ))) { // ex. 2006-08-03 10:12:18
      $input = $toolbox->_date_time_string( $year );
      $utc = ( TRUE === $month ) ? TRUE : FALSE;
    }
    elseif(( $year !== FALSE ) && ( $month !== FALSE ) && ( $day !== FALSE )) {
      if(( 0 > (int) $year ) || (2100 < (int) $year ))
        return FALSE;
      $month = (int) $month;
      if(( 1 > $month ) || ( 12 < $month ))
        return FALSE;
      $day   = (int) $day;
      if(( 1 > $day ) || ( 31 < $day ))
        return FALSE;