ubb.php

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<?php

/**
 * Class: UBB parser
 * @discription Replace the UBB in your text
 * @author Jan Erik van Woerden
 *
 */

class ubb {
    
    
    /**
     * UBB
     *
     * (default value: array())
     *
     * @var array
     * @access private
     */

    private $ubb = array();
    
    
    /**
     * smileys
     *
     * (default value: array())
     *
     * @var array
     * @access private
     */

    private $smileys = array();
    
    
    /**
     * shortsmileys
     *
     * (default value: array())
     *
     * @var array
     * @access private
     */

    private $shortsmileys = array();
    
    
    
    
    /**
     * __construct function.
     *
     * @access public
     * @return void
     */

    public function __construct() {
    
        $this->addUBB( 'i', '<i>\1</i>' );
        $this->addUBB( 'b', '<strong>\1</strong>' );
        $this->addUBB( 'u', '<span style="text-decoration:underline">\1</span>' );
        $this->addUBB( 's', '<span style="text-decoration:line-through">\1</span>' );
        $this->addUBB( 'sub', '<sub>\1</sub>' );
        $this->addUBB( 'sup', '<sup>\1</sup>' );
        $this->addUBB( 'center', '<div style="text-align: center;">\1</div>' );
        $this->addUBB( 'code', '<code>\1</code>' );
        
        $this->addUBB( 'url', array( $this, '_tagURL' ) );
        $this->addUBB( 'list', array( $this, '_tagList' ) );
        $this->addUBB( 'img', array( $this, '_tagImg' ) );
    
    }

    
    
    
    /**
     * addUBB function.
     *
     * @access public
     * @param string $tag
     * @param string $function
     * @return bool
     */

    public function addUBB( $tag, $function) {
        
        if( !empty( $tag ) && is_string( $tag ) && !empty( $function ) && ( is_string( $function ) OR is_array( $function ) ) ) {
            
            $this->ubb[ $tag ] = $function;
            
            return true;
        
        }

        
        return false;
        
    }

    
    
    
    /**
     * Add a smiley with :{tag}:
     *
     * @access public
     * @param string $tag
     * @param string $url The url to the image
     * @return bool
     */

    public function addSmiley( $tag, $url ) {
    
        if( !empty( $tag ) && !empty( $url ) && is_string( $tag ) && is_string( $url ) ) {
            
            $this->smileys[ $tag ] = $url;
            return true;
            
        }

        
        return false;
        
    }

    
    
    
    /**
     * Add a smiley without :{tag}: only {tag}
     *
     * @access public
     * @param string $tag
     * @param string $url The url to the image
     * @return bool
     */

    public function addShortSmiley( $tag, $url ) {
        
        if( !empty( $tag ) && !empty( $url ) && is_string( $tag ) && is_string( $url ) ) {
            
            $this->shortsmileys[ $tag ] = $url;
            return true;
            
        }

        
        return false;
    
    }

    
    
    
    /**
     * set2preg function.
     *
     * @access private
     * @param string $string
     * @return string
     */

    private function set2preg( $string ) {
        
        if( is_string( $string ) ) {
            
            $string = str_replace( ')', '\)', $string );
            $string = str_replace( '(', '\(', $string );
            $string = str_replace( '/', '\/', $string );
            $string = str_replace( '[', '\[', $string );
            $string = str_replace( ']', '\]', $string );
            
        }

        
        return $string;
    }

    
    
    
    /**
     * The parse function.
     *
     * @access public
     * @param string $text
     * @return string
     */

    public function parse( $text ) {
        
        $text = htmlspecialchars( $text );
        
        $text = $this->ubbParse( $text );
        $text = $this->smileyParse( $text );
        
        $text = nl2br( $text );
        
        return $text;
        
    }

    
    
    
    /**
     * smileyParse function.
     *
     * @access private
     * @param string $text
     * @return string
     */

    private function smileyParse( $text ) {
        
        if( is_string( $text ) ) {
        
            $search = array();
            $replace = array();
            
            foreach( $this->smileys as $key => $value ) {
                
                $search[] = '/:' . $this->set2preg( $key ) . ':/';
                $replace[] = '<img src="' . $value . '" class="smiley" title=":' . $key . ':" />';
                
            }

            
            foreach( $this->shortsmileys as $key => $value ) {
                
                $search[] = '/' . $this->set2preg( $key ) . '/';
                $replace[] = '<img src="' . $value . '" class="smiley" title="' . $key . '" />';
                
            }

            
            
            $text = preg_replace( $search, $replace, $text );
                
        }

        
        return $text;
        
    }

    
    
    
    /**
     * Parse all the UBB functions
     *
     * @access private
     * @param string $text
     * @return string
     */

    private function ubbParse( $text ) {
        
        $text = preg_replace_callback( '~(?:\[(([^\s=]+))((?:(?: |=).+?)?)(?<!/)\]((?s).+?)\[/\2\])|(?:(?m)\[(([^\s=]+)(?:(?: |=).+?)?) /\](.+?)$)~iS', array( $this, '_tagUBB' ), $text );
        return $text;
    
    }

    
    
    /**
     * Every time the parser finds a UBB match he calls this function
     *
     * This functions calls the good function for every tag and replace the tags.
     *
     * @access private
     * @param string $input
     * @return string
     */

    private function _tagUBB( $input ) {
        $send[ 'string' ] = $input[ 0 ];
        $send[ 'tag' ] = $input[ 2 ];
        $send[ 'text' ] = $this->ubbParse( $input[ 4 ] );
        
        if( $send[ 'tag' ] == 'no' ) {
            return $input[ 4 ];
        }

        
        if( substr( $input[ 3 ], 0, 1 ) == '=' ) {
            
            preg_match_all( '~([^\s=]+)(?:=(?(?=\')\'(.+?)\'|(.+?)))?(?: |$)~', $input[ 3 ], $return, PREG_SET_ORDER );
            $send[ 'attributes' ] = $return[ 0 ][ 1 ];
            
            
        }
elseif( substr( $input[ 3 ], 0, 1 ) == ' ' ) {
            
            
            preg_match_all( '~([^\s=]+)(?:=(?(?=\')\'(.+?)\'|(.+?)))?(?: |$)~', $input[ 3 ], $return, PREG_SET_ORDER );
            
            $send['attributes'] = array();
            
            foreach( $return as $attribute) {
            
                if( !isset( $attribute[ 2 ] ) ) {
                
                    $attribute[ 2 ] = $attribute[ 1 ];
                    
                }

                
                $send['attributes'][ $attribute[ 1 ] ] = $attribute[ 2 ];
                
            }
            
        }

        
        if( isset( $this->ubb[ $send[ 'tag' ] ] ) ) {
        
            if( is_callable( $this->ubb[ $send[ 'tag' ] ] ) ) {
                
                return call_user_func( $this->ubb[ $send[ 'tag' ] ], $send );
                
            }
elseif( is_string( $this->ubb[ $send[ 'tag' ] ] ) ) {

                return str_replace( '\1', $send[ 'text' ], $this->ubb[ $send[ 'tag' ] ] );
            
            }
        
        }

        
        return $input[ 0 ];
    }

    
    
    
    /**
     * The function for parsing a url.
     *
     * @access public
     * @param mixed $send
     * @return void
     */

    public function _tagURL( $send ) {
        
        $urlregex = "^(https?|ftp)\:\/\/([a-z0-9+!*(),;?&=\$_.-]+(\:[a-z0-9+!*(),;?&=\$_.-]+)?@)?[a-z0-9+\$_-]+(\.[a-z0-9+\$_-]+)*(\:[0-9]{2,5})?(\/([a-z0-9+\$_-]\.?)+)*\/?(\?[a-z+&\$_.-][a-z0-9;:@/&%=+\$_.-]*)?(#[a-z_.-][a-z0-9+\$_.-]*)?\$";
        
        if( isset( $send[ 'attributes' ] ) && is_string( $send[ 'attributes' ] ) && eregi( $urlregex, $send[ 'attributes' ] ) ) {
        
            return '<a href="' . $send[ 'attributes' ] . '" target="_blank">' . $send[ 'text' ] . '</a>';
        
        }
elseif( eregi( $urlregex, $send[ 'text' ] ) ) {
            
            return '<a href="' . $send[ 'text' ] . '" target="_blank">' . $send[ 'text' ] . '</a>';
            
        }

        
        return $send[ 'string' ];
        
    }

    
    /**
     * The function for parsing a list.
     *
     * @access public
     * @param mixed $send
     * @return void
     */

    public function _tagList( $send ) {
    
        preg_match_all( "/\[\*\](.*)\n/", $send[ 'text' ], $checks, PREG_SET_ORDER );
        
        $return = '<ul>';
        
        foreach( $checks as $check ) {
            $return .= '<li>' . $check[ 1 ] . '</li>';
        }

        
        $return .= '</ul>';
        
        return $return;
        
    }

    
    /**
     * The function for parsing a image.
     *
     * @access public
     * @param mixed $send
     * @return void
     */

    public function _tagImg( $send ) {
        
        $urlregex = "^(https?|ftp)\:\/\/([a-z0-9+!*(),;?&=\$_.-]+(\:[a-z0-9+!*(),;?&=\$_.-]+)?@)?[a-z0-9+\$_-]+(\.[a-z0-9+\$_-]+)*(\:[0-9]{2,5})?(\/([a-z0-9+\$_-]\.?)+)*\/?(\?[a-z+&\$_.-][a-z0-9;:@/&%=+\$_.-]*)?(#[a-z_.-][a-z0-9+\$_.-]*)?\$";
        
        if( eregi( $urlregex, $send[ 'text' ] ) ) {
            
            return '<img class="img" src="' . $send[ 'text' ] . '" title="' . $send[ 'text' ] . '" />';
            
        }

        
        return $send[ 'string' ];
        
    }
    
}

?>

 
 

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