stas/.gitignore

## .gitignore
*.ics

## iCalParser.class.php
<?php
/**
 * iCalParser implements a basic parser for .ics files.
 * This class is a fork of TigerCRM parser class.
 * Improved by Stas Sușcov (stas_at_nerd_dot_ro), May 2010.
 *	- Better handling of summmaries and descriptions
 *	- Sanitization and proper handling of parsed content
 *	- Code optimizations
 *	- Inline docs
 *
 * <code>
 * <?php
 *
 * include( "ical.class.php" );
 * $vcal = new iCalParser( "icalfile.ics" );
 * var_dump( $vcal );
 *
 * ?>
 * </code>
 *
 * @package icalparser
 * @since 1.0.3
 * @copyright (c) TigerCRM, under GPL compatible VPL licence
 * @link http://trac.vtiger.com/svn/vtiger/vtigercrm/branches/5.2.0/modules/Calendar/iCal/ical-parser-class.php
 */
class iCalParser {
	/**
	 * Filename of the source file
	 * @access public
	 */
	var $filename;

	/**
	 * Content of the file
	 * @access public
	 */
	var $file_contents;

	/**
	 * Resulted vevents parsed from file
	 * @access public
	 */
	var $events;

	/**
	 * Resulted vtodos parsed from file
	 * @access public
	 */
	var $todos;

	/**
	 * Here be errors saved
	 * @access private
	 */
	var $errors;

	/**
	 * Constructor method. Parses the $filename and populates $entries
	 * @access public
	 * @param string $filename the filename to read from
	 */
	public function iCalParser( $filename, $load_contents = false ) {
		if( !file_exists( $filename ) ) {
			$this->log( "File doesn't exist." );
			return;
		}
		$this->filename = $filename;
		$this->file_contents = file_get_contents( $this->filename );
		$this->read();
		if( !$load_contents )
			unset( $this->file_contents );
	}

	/**
	 * Function reads the $filename for vevent and vtodo entries
	 * @access private
	 */
	private function read() {
		preg_match_all( '/BEGIN:VEVENT.*?END:VEVENT/si', $this->file_contents, $events, PREG_PATTERN_ORDER );
		preg_match_all( '/BEGIN:VTODO.*?END:VTODO/si', $this->file_contents, $todos, PREG_PATTERN_ORDER );
		// parse vevent entries
		$this->events = $this->parse( $events );
		// parse vtodo entries
		$this->todos = $this->parse( $todos );
	}

	/**
	 * Function parses for vevents or vtodos
	 * @access private
	 * @param array $to_parse Array of strings to parse
	 */
	private function parse( $to_parse, $limit = 2 ) {
		$results = null;
		for ( $i = 0; $i < count( $to_parse[0] ); $i++ ) {
			$tmpbyline = explode( "\r\n", $to_parse[0][$i] );
			$begin = false;
			$key = NULL;
			for( $l = 0; $l < count( $tmpbyline); $l++ ) {
				$item = $tmpbyline[$l];
				$tmpholderarray = explode( ":", $item, $limit );

				if ( isset( $tmpholderarray ) && count( $tmpholderarray ) >1 ) {
					if( $tmpholderarray[0] == "DESCRIPTION" || $tmpholderarray[0] == "SUMMARY" ) {
						$ll = $l + 1;
						while( $tmpbyline[$ll][0] == ' ' ) {
							$tmpholderarray[1] .= trim( $tmpbyline[$ll] );
							$tmpbyline[$ll] = '';
							$ll++;
						}
						$tmpholderarray[1] = $this->sanitize( $tmpholderarray[1] );
						$result[$tmpholderarray[0]] = $tmpholderarray[1];
					} else if( $tmpholderarray[0]=='BEGIN' ){
						if( $begin==false ){
							$begin = true;
							$result['type']=$tmpholderarray[1];
						} else {
							$result[$tmpholderarray[1]]=array();
							$key = $tmpholderarray[1];
						}
					} else if( $tmpholderarray[0]=='END' ){
						if( !empty( $key ) ){
							$key = NULL;
						}
					} else {
						if( !empty( $key ) ){
							$result[$key][$tmpholderarray[0]] = stripslashes( $tmpholderarray[1] );
						} else {
							$result[$tmpholderarray[0]] = stripslashes( $tmpholderarray[1] );
						}
					}
				}
			}
			$results[] = $result;
			unset( $result );
		}
		return $results;
	}

	/**
	 * Sanitization rules
	 * @access private
	 * @param string $str String to be sanitized
	 */
	private function sanitize( $str ) {
		$str = str_replace( array( "\\n", "\\r" ), "\n", $str );
		$str = stripslashes( $str );
		return $str;
	}

	/**
	 * Simple error logger
	 * @access public
	 * @param string $message
	 */
	public function log( $message ) {
		$this->errors[] = $message;
	}
}
?>

## test.php
<html>
<head>
</head>
<body>
<pre>
<?php
include("iCalParser.class.php");

$vcal = new iCalParser("basic.ics");
var_dump($vcal);

?>
</pre>
</body>
</html>
	<?php
	/**
	* iCalParser implements a basic parser for .ics files.
	* This class is a fork of TigerCRM parser class.
	* Improved by Stas Sușcov (stas_at_nerd_dot_ro), May 2010.
	* - Better handling of summmaries and descriptions
	* - Sanitization and proper handling of parsed content
	* - Code optimizations
	* - Inline docs
	*
	* <code>
	* <?php
	*
	* include( "ical.class.php" );
	* $vcal = new iCalParser( "icalfile.ics" );
	* var_dump( $vcal );
	*
	* ?>
	* </code>
	*
	* @package icalparser
	* @since 1.0.3
	* @copyright (c) TigerCRM, under GPL compatible VPL licence
	* @link http://trac.vtiger.com/svn/vtiger/vtigercrm/branches/5.2.0/modules/Calendar/iCal/ical-parser-class.php
	*/
	class iCalParser {
	/**
	* Filename of the source file
	* @access public
	*/
	var $filename;

	/**
	* Content of the file
	* @access public
	*/
	var $file_contents;

	/**
	* Resulted vevents parsed from file
	* @access public
	*/
	var $events;

	/**
	* Resulted vtodos parsed from file
	* @access public
	*/
	var $todos;

	/**
	* Here be errors saved
	* @access private
	*/
	var $errors;

	/**
	* Constructor method. Parses the $filename and populates $entries
	* @access public
	* @param string $filename the filename to read from
	*/
	public function iCalParser( $filename, $load_contents = false ) {
	if( !file_exists( $filename ) ) {
	$this->log( "File doesn't exist." );
	return;
	}
	$this->filename = $filename;
	$this->file_contents = file_get_contents( $this->filename );
	$this->read();
	if( !$load_contents )
	unset( $this->file_contents );
	}

	/**
	* Function reads the $filename for vevent and vtodo entries
	* @access private
	*/
	private function read() {
	preg_match_all( '/BEGIN:VEVENT.*?END:VEVENT/si', $this->file_contents, $events, PREG_PATTERN_ORDER );
	preg_match_all( '/BEGIN:VTODO.*?END:VTODO/si', $this->file_contents, $todos, PREG_PATTERN_ORDER );
	// parse vevent entries
	$this->events = $this->parse( $events );
	// parse vtodo entries
	$this->todos = $this->parse( $todos );
	}

	/**
	* Function parses for vevents or vtodos
	* @access private
	* @param array $to_parse Array of strings to parse
	*/
	private function parse( $to_parse, $limit = 2 ) {
	$results = null;
	for ( $i = 0; $i < count( $to_parse[0] ); $i++ ) {
	$tmpbyline = explode( "\r\n", $to_parse[0][$i] );
	$begin = false;
	$key = NULL;
	for( $l = 0; $l < count( $tmpbyline); $l++ ) {
	$item = $tmpbyline[$l];
	$tmpholderarray = explode( ":", $item, $limit );

	if ( isset( $tmpholderarray ) && count( $tmpholderarray ) >1 ) {
	if( $tmpholderarray[0] == "DESCRIPTION" \|\| $tmpholderarray[0] == "SUMMARY" ) {
	$ll = $l + 1;
	while( $tmpbyline[$ll][0] == ' ' ) {
	$tmpholderarray[1] .= trim( $tmpbyline[$ll] );
	$tmpbyline[$ll] = '';
	$ll++;
	}
	$tmpholderarray[1] = $this->sanitize( $tmpholderarray[1] );
	$result[$tmpholderarray[0]] = $tmpholderarray[1];
	} else if( $tmpholderarray[0]=='BEGIN' ){
	if( $begin==false ){
	$begin = true;
	$result['type']=$tmpholderarray[1];
	} else {
	$result[$tmpholderarray[1]]=array();
	$key = $tmpholderarray[1];
	}
	} else if( $tmpholderarray[0]=='END' ){
	if( !empty( $key ) ){
	$key = NULL;
	}
	} else {
	if( !empty( $key ) ){
	$result[$key][$tmpholderarray[0]] = stripslashes( $tmpholderarray[1] );
	} else {
	$result[$tmpholderarray[0]] = stripslashes( $tmpholderarray[1] );
	}
	}
	}
	}
	$results[] = $result;
	unset( $result );
	}
	return $results;
	}

	/**
	* Sanitization rules
	* @access private
	* @param string $str String to be sanitized
	*/
	private function sanitize( $str ) {
	$str = str_replace( array( "\\n", "\\r" ), "\n", $str );
	$str = stripslashes( $str );
	return $str;
	}

	/**
	* Simple error logger
	* @access public
	* @param string $message
	*/
	public function log( $message ) {
	$this->errors[] = $message;
	}
	}
	?>
	<html>
	<head>
	</head>
	<body>
	<pre>
	<?php
	include("iCalParser.class.php");

	$vcal = new iCalParser("basic.ics");
	var_dump($vcal);

	?>
	</pre>
	</body>
	</html>