<?php
/* vim: set expandtab tabstop=4 softtabstop=4 shiftwidth=4: */ 
// +----------------------------------------------------------------------+ 
// | PHP version 4                                                        | 
// +----------------------------------------------------------------------+ 
// | Copyright (c) 1997-2002 The PHP Group                                | 
// +----------------------------------------------------------------------+ 
// | This source file is subject to version 2.0 of the PHP license,       | 
// | that is bundled with this package in the file LICENSE, and is        | 
// | available at through the world-wide-web at                           | 
// | http://www.php.net/license/2_02.txt.                                 | 
// | If you did not receive a copy of the PHP license and are unable to   | 
// | obtain it through the world-wide-web, please send a note to          | 
// | license@php.net so we can mail you a copy immediately.               | 
// +----------------------------------------------------------------------+ 
// | Authors: Paul M. Jones <pmjones@php.net>                             | 
// +----------------------------------------------------------------------+ 
// 
// $Id: Contact_Vcard_Build.php,v 1.2 2005/05/28 14:49:56 pmjones Exp $ 

/**
* 
* This class builds a single vCard (version 3.0 or 2.1).
*
* General note: we use the terms "set" "add" and "get" as function
* prefixes.
* 
* "Set" means there is only one iteration of a component, and it has
* only one value repetition, so you set the whole thing at once.
* 
* "Add" means eith multiple iterations of a component are allowed, or
* that there is only one iteration allowed but there can be multiple
* value repetitions, so you add iterations or repetitions to the current
* stack.
* 
* "Get" returns the full vCard line for a single iteration.
* 
* @author Paul M. Jones <pmjones@php.net>
* 
* @package Contact_Vcard
* 
* @version @package_version@
* 
*/


// Part numbers for N components
define('VCARD_N_FAMILY',     0);
define('VCARD_N_GIVEN',      1);
define('VCARD_N_ADDL',       2);
define('VCARD_N_PREFIX',     3);
define('VCARD_N_SUFFIX',     4);

// Part numbers for ADR components
define('VCARD_ADR_POB',      0);
define('VCARD_ADR_EXTEND',   1);
define('VCARD_ADR_STREET',   2);
define('VCARD_ADR_LOCALITY', 3);
define('VCARD_ADR_REGION',   4);
define('VCARD_ADR_POSTCODE', 5);
define('VCARD_ADR_COUNTRY',  6);

// Part numbers for GEO components
define('VCARD_GEO_LAT',      0);
define('VCARD_GEO_LON',      1);

require_once 'PEAR.php';

class Contact_Vcard_Build extends PEAR {
    
    
    /**
    * 
    * Values for vCard components.
    * 
    * @access public
    * 
    * @var array
    * 
    */
    
    var $value = array();
    
    
    /**
    * 
    * Parameters for vCard components.
    * 
    * @access public
    * 
    * @var array
    * 
    */
    
    var $param = array();
    
    
    /**
    *
    * Tracks which component (N, ADR, TEL, etc) value was last set or added.
    * Used when adding parameters automatically to the proper component.
    *
    * @access public
    * 
    * @var string
    *
    */
    
    var $autoparam = null;
    
    
    /**
    *
    * Constructor.
    *
    * @access public
    * 
    * @param string $version The vCard version to build; affects which
    * parameters are allowed and which components are returned by
    * fetch().
    * 
    * @return void
    * 
    * @see Contact_Vcard_Build::fetch()
    *
    */
    
    function Contact_Vcard_Build($version = '3.0')
    {
        $this->PEAR();
        $this->setErrorHandling(PEAR_ERROR_PRINT);
        $this->setVersion($version);
    }
    
    
    /**
    * 
    * Prepares a string so it may be safely used as vCard values.  DO
    * NOT use this with binary encodings.  Operates on text in-place;
    * does not return a value.  Recursively descends into arrays.
    * 
    * Escapes a string so that...
    *     ; => \;
    *     , => \,
    *     newline => literal \n
    * 
    * @access public
    * 
    * @param mixed $text The string or array or strings to escape.
    * 
    * @return mixed Void on success, or a PEAR_Error object on failure.
    * 
    */
    
    function escape(&$text)
    {
        if (is_object($text)) {
        
            return $this->raiseError('The escape() method works only with string literals and arrays.');
        
        } elseif (is_array($text)) {
            
            foreach ($text as $key => $val) {
                $this->escape($val);
                $text[$key] = $val;
            }
            
        } else {
        
            // escape colons not led by a backslash
            $regex = '(?<!\\\\)(\:)';
            $text = preg_replace("/$regex/i", "\\:", $text);
            
            // escape semicolons not led by a backslash
            $regex = '(?<!\\\\)(\;)';
            $text = preg_replace("/$regex/i", "\\;", $text);
            
            // escape commas not led by a backslash
            $regex = '(?<!\\\\)(\,)';
            $text = preg_replace("/$regex/i", "\\,", $text);
            
            // escape newlines
            $regex = '\\n';
            $text = preg_replace("/$regex/i", "\\n", $text);
            
        }
    }
    
    
    /**
    * 
    * Adds a parameter value for a given component and parameter name.
    *
    * Note that although vCard 2.1 allows you to specify a parameter
    * value without a name (e.g., "HOME" instead of "TYPE=HOME") this
    * class is not so lenient.  ;-)    You must specify a parameter name
    * (TYPE, ENCODING, etc) when adding a parameter.  Call multiple
    * times if you want to add multiple values to the same parameter.
    * E.g.:
    * 
    * $vcard = new Contact_Vcard_Build();
    *
    * // set "TYPE=HOME,PREF" for the first TEL component
    * $vcard->addParam('TEL', 0, 'TYPE', 'HOME');
    * $vcard->addParam('TEL', 0, 'TYPE', 'PREF');
    * 
    * @access public
    * 
    * @param string $param_name The parameter name, such as TYPE, VALUE,
    * or ENCODING.
    * 
    * @param string $param_value The parameter value.
    * 
    * @param string $comp The vCard component for which this is a
    * paramter (ADR, TEL, etc).  If null, will be the component that was
    * last set or added-to.
    * 
    * @param mixed $iter An integer vCard component iteration that this
    * is a param for.  E.g., if you have more than one ADR component, 0
    * refers to the first ADR, 1 to the second ADR, and so on.  If null,
    * the parameter will be added to the last component iteration
    * available.
    * 
    * @return mixed Void on success, or a PEAR_Error object on failure.
    * 
    */
    
    function addParam($param_name, $param_value, $comp = null,
        $iter = null)
    {
        // if component is not specified, default to the last component
        // that was set or added.
        if ($comp === null) {
            $comp = $this->autoparam;
        }
        
        // using a null iteration means the param should be associated
        // with the latest/most-recent iteration of the selected
        // component.
        if ($iter === null) {
            $iter = $this->countIter($comp) - 1;
        }
        
        // massage the text arguments
        $comp = strtoupper(trim($comp));
        $param_name = strtoupper(trim($param_name));
        $param_value = trim($param_value);
        
        if (! is_integer($iter) || $iter < 0) {
        
            return $this->raiseError("$iter is not a valid iteration number for $comp; must be a positive integer.");
            
        } else {
            
            $result = $this->validateParam($param_name, $param_value, $comp, $iter);
            
            if (PEAR::isError($result)) {
                return $result;
            } else {
                $this->param[$comp][$iter][$param_name][] = $param_value;
            }
            
        }
    }
    
    
    /**
    * 
    * Validates parameter names and values based on the vCard version
    * (2.1 or 3.0).
    * 
    * @access public
    * 
    * @param string $name The parameter name (e.g., TYPE or ENCODING).
    * 
    * @param string $text The parameter value (e.g., HOME or BASE64).
    * 
    * @param string $comp Optional, the component name (e.g., ADR or
    * PHOTO).  Only used for error messaging.
    * 
    * @param string $iter Optional, the iteration of the component. 
    * Only used for error messaging.
    * 
    * @return mixed Boolean true if the parameter is valid, or a
    * PEAR_Error object if not.
    * 
    */
    
    function validateParam($name, $text, $comp = null, $iter = null)
    {
        $name = strtoupper($name);
        $text = strtoupper($text);
        
        // all param values must have only the characters A-Z 0-9 and -.
        if (preg_match('/[^a-zA-Z0-9\-]/i', $text)) {
            
            $result = $this->raiseError("vCard [$comp] [$iter] [$name]: The parameter value may contain only a-z, A-Z, 0-9, and dashes (-).");
        
        } elseif ($this->value['VERSION'][0][0][0] == '2.1') {
            
            // Validate against version 2.1 (pretty strict)
            
            $types = array (
                'DOM', 'INTL', 'POSTAL', 'PARCEL','HOME', 'WORK',
                'PREF', 'VOICE', 'FAX', 'MSG', 'CELL', 'PAGER',
                'BBS', 'MODEM', 'CAR', 'ISDN', 'VIDEO',
                'AOL', 'APPLELINK', 'ATTMAIL', 'CIS', 'EWORLD',
                'INTERNET', 'IBMMAIL', 'MCIMAIL',
                'POWERSHARE', 'PRODIGY', 'TLX', 'X400',
                'GIF', 'CGM', 'WMF', 'BMP', 'MET', 'PMB', 'DIB',
                'PICT', 'TIFF', 'PDF', 'PS', 'JPEG', 'QTIME',
                'MPEG', 'MPEG2', 'AVI',
                'WAVE', 'AIFF', 'PCM',
                'X509', 'PGP'
            );
            
            
            switch ($name) {
            
            case 'TYPE':
                if (! in_array($text, $types)) {
                    $result = $this->raiseError("vCard 2.1 [$comp] [$iter]: $text is not a recognized TYPE.");
                } else {
                    $result = true;
                }
                break;
            
            case 'ENCODING':
                if ($text != '7BIT' &&
                    $text != '8BIT' &&
                    $text != 'BASE64' &&
                    $text != 'QUOTED-PRINTABLE') {
                    $result = $this->raiseError("vCard 2.1 [$comp] [$iter]: $text is not a recognized ENCODING.");
                } else {
                    $result = true;
                }
                break;
            
            case 'CHARSET':
                // all charsets are OK
                $result = true;
                break;
                
            case 'LANGUAGE':
                // all languages are OK
                $result = true;
                break;
            
            case 'VALUE':
                if ($text != 'INLINE' &&
                    $text != 'CONTENT-ID' &&
                    $text != 'CID' &&
                    $text != 'URL' &&
                    $text != 'VCARD') {
                    $result = $this->raiseError("vCard 2.1 [$comp] [$iter]: $text is not a recognized VALUE.");
                } else {
                    $result = true;
                }
                break;
                
            default:
                $result = $this->raiseError("vCard 2.1 [$comp] [$iter]: $name is an unknown or invalid parameter name.");
                break;
            }
            
        } elseif ($this->value['VERSION'][0][0][0] == '3.0') {
            
            // Validate against version 3.0 (pretty lenient)
            
            switch ($name) {
            
            case 'TYPE':
                // all types are OK
                $result = true;
                break;
                
            case 'LANGUAGE':
                // all languages are OK
                $result = true;
                break;
            
            case 'ENCODING':
                if ($text != '8BIT' &&
                    $text != 'B') {
                    $result = $this->raiseError("vCard 3.0 [$comp] [$iter]: The only allowed ENCODING parameters are 8BIT and B.");
                } else {
                    $result = true;
                }
                break;
            
            case 'VALUE':
                if ($text != 'BINARY' &&
                    $text != 'PHONE-NUMBER' &&
                    $text != 'TEXT' &&
                    $text != 'URI' &&
                    $text != 'UTC-OFFSET' &&
                    $text != 'VCARD') {
                    $result = $this->raiseError("vCard 3.0 [$comp] [$iter]: The only allowed VALUE parameters are BINARY, PHONE-NUMBER, TEXT, URI, UTC-OFFSET, and VCARD.");
                } else {
                    $result = true;
                }
                break;
            
            default:
                $result = $this->raiseError("vCard 3.0 [$comp] [$iter]: Unknown or invalid parameter name ($name).");
                break;
                
            }
            
        } else {
        
            $result = $this->raiseError("[$comp] [$iter] Unknown vCard version number or other error.");
        
        }
        
        return $result;
            
    }
    
    
    /**
    * 
    * Gets back the parameter string for a given component.
    * 
    * @access public
    * 
    * @param string $comp The component to get parameters for (ADR, TEL,
    * etc).
    * 
    * @param int $iter The vCard component iteration to get the param
    * list for.  E.g., if you have more than one ADR component, 0 refers
    * to the first ADR, 1 to the second ADR, and so on.
    * 
    * @return string
    * 
    */
    
    function getParam($comp, $iter = 0)
    {
        $comp = strtoupper($comp);
        $text = '';
        
        if (isset($this->param[$comp][$iter]) &&
            is_array($this->param[$comp][$iter])) {
            
            // loop through the array of parameters for
            // the component
            
            foreach ($this->param[$comp][$iter] as $param_name => $param_val) {
                
                // if there were previous parameter names, separate with
                // a semicolon
                if ($text != '') {
                    $text .= ';';
                }
                
                if ($param_val === null) {
                    
                    // no parameter value was specified, which is typical
                    // for vCard version 2.1 -- the name is the value.
                    $this->escape($param_name);
                    $text .= $param_name;
                    
                } else {
                    // set the parameter name...
                    $text .= strtoupper($param_name) . '=';
                    
                    // ...then escape and comma-separate the parameter
                    // values.
                    $this->escape($param_val);
                    $text .= implode(',', $param_val);
                }
            }
        }
        
        // if there were no parameters, this will be blank.
        return $text;
    }
    
    
    /**
    * 
    * Resets the vCard values and params to be blank.
    * 
    * @access public
    * 
    * @param string $version The vCard version to reset to ('2.1' or
    * '3.0' -- default is the same version as previously set).
    * 
    * @return void
    * 
    */
    
    function reset($version = null)
    {
        $prev = $this->value['VERSION'][0][0][0];
        
        $this->value = array();
        $this->param = array();
        $this->autoparam = null;
        
        if ($version === null) {
            $this->setVersion($prev);
        } else {
            $this->setVersion($version);
        }
    }
    
    
    /**
    * 
    * Gets the left-side/prefix/before-the-colon (metadata) part of a
    * vCard line, including the component identifier, the parameter
    * list, and a colon.
    * 
    * @access public
    * 
    * @param string $comp The component to get metadata for (ADR, TEL,
    * etc).
    * 
    * @param int $iter The vCard component iteration to get the metadata
    * for.  E.g., if you have more than one ADR component, 0 refers to
    * the first ADR, 1 to the second ADR, and so on.
    * 
    * @return string The line prefix metadata.
    * 
    */
    
    function getMeta($comp, $iter = 0)
    {
        $params = $this->getParam($comp, $iter);
        
        if (trim($params) == '') {
            // no parameters
            $text = $comp . ':';
        } else {
            // has parameters.  put an extra semicolon in.
            $text = $comp . ';' . $params . ':';
        }
        
        return $text;
    }
    
    
    /**
    *
    * Generic, all-purpose method to store a string or array in
    * $this->value, in a way suitable for later output as a vCard
    * element.  This forces the value to be the passed text or array
    * value, overriding any prior values.
    * 
    * @access public
    *
    * @param string $comp The component to set the value for ('N',
    * 'ADR', etc).
    * 
    * @param int $iter The component-iteration to set the value for.
    * 
    * @param int $part The part number of the component-iteration to set
    * the value for.
    * 
    * @param mixed $text A string or array; the set of repeated values
    * for this component-iteration part.
    * 
    * @return void
    * 
    */
    
    function setValue($comp, $iter, $part, $text)
    {
        $comp = strtoupper($comp);
        settype($text, 'array');
        $this->value[$comp][$iter][$part] = $text;
        $this->autoparam = $comp;
    }
    
    
    /**
    *
    * Generic, all-purpose method to add a repetition of a string or
    * array in $this->value, in a way suitable for later output as a
    * vCard element.  This appends the value to be the passed text or
    * array value, leaving any prior values in place.
    * 
    * @access public
    *
    * @param string $comp The component to set the value for ('N',
    * 'ADR', etc).
    * 
    * @param int $iter The component-iteration to set the value for.
    * 
    * @param int $part The part number of the component-iteration to set
    * the value for.
    * 
    * @param mixed $text A string or array; the set of repeated values
    * for this component-iteration part.
    * 
    * @return void
    * 
    */
    
    function addValue($comp, $iter, $part, $text)
    {
        $comp = strtoupper($comp);
        settype($text, 'array');
        foreach ($text as $val) {
            $this->value[$comp][$iter][$part][] = $val;
        }
        $this->autoparam = $comp;
    }
    
    
    /**
    *
    * Generic, all-purpose method to get back the data stored in $this->value.
    * 
    * @access public
    *
    * @param string $comp The component to set the value for ('N',
    * 'ADR', etc).
    * 
    * @param int $iter The component-iteration to set the value for.
    * 
    * @param int $part The part number of the component-iteration to get
    * the value for.
    * 
    * @param mixed $rept The repetition number within the part to get;
    * if null, get all repetitions of the part within the iteration.
    * 
    * @return string The value, escaped and delimited, of all
    * repetitions in the component-iteration part (or specific
    * repetition within the part).
    * 
    */
    
    function getValue($comp, $iter = 0, $part = 0, $rept = null)
    {
        if ($rept === null &&
            is_array($this->value[$comp][$iter][$part]) ) {
            
            // get all repetitions of a part
            $list = array();
            foreach ($this->value[$comp][$iter][$part] as $key => $val) {
                $list[] = trim($val);
            }
            
            $this->escape($list);
            return implode(',', $list);
            
        } else {
            
            // get a specific repetition of a part
            $text = trim($this->value[$comp][$iter][$part][$rept]);
            $this->escape($text);
            return $text;
            
        }
    }
    
    
    /**
    * 
    * Sets the full N component of the vCard.  Will replace all other
    * values.  There can only be one N component per vCard.
    * 
    * @access public
    * 
    * @param mixed $family Single (string) or multiple (array)
    * family/last name.
    * 
    * @param mixed $given Single (string) or multiple (array)
    * given/first name.
    * 
    * @param mixed $addl Single (string) or multiple (array)
    * additional/middle name.
    * 
    * @param mixed $prefix Single (string) or multiple (array) honorific
    * prefix such as Mr., Miss, etc.
    * 
    * @param mixed $suffix Single (string) or multiple (array) honorific
    * suffix such as III, Jr., Ph.D., etc.
    * 
    * @return void
    * 
    */
    
    function setName($family, $given, $addl, $prefix, $suffix)
    {
        $this->autoparam = 'N';
        $this->setValue('N', 0, VCARD_N_FAMILY, $family);
        $this->setValue('N', 0, VCARD_N_GIVEN, $given);
        $this->setValue('N', 0, VCARD_N_ADDL, $addl);
        $this->setValue('N', 0, VCARD_N_PREFIX, $prefix);
        $this->setValue('N', 0, VCARD_N_SUFFIX, $suffix);
    }
    
    
    /**
    * 
    * Gets back the full N component (first iteration only, since there
    * can only be one N component per vCard).
    * 
    * @access public
    * 
    * @return string The first N component-interation of the vCard.
    * 
    */
    
    function getName()
    {
        return $this->getMeta('N', 0) .
            $this->getValue('N', 0, VCARD_N_FAMILY) . ';' .
            $this->getValue('N', 0, VCARD_N_GIVEN) . ';' .
            $this->getValue('N', 0, VCARD_N_ADDL) . ';' .
            $this->getValue('N', 0, VCARD_N_PREFIX) . ';' .
            $this->getValue('N', 0, VCARD_N_SUFFIX);
    }
    
    
    
    /**
    * 
    * Sets the FN component of the card.  If no text is passed as the
    * FN value, constructs an FN automatically from N components.  There
    * is only one FN iteration per vCard.
    * 
    * @access public
    * 
    * @param string $text Override the automatic generation of FN from N
    * elements with the specified text.
    * 
    * @return mixed Void on success, or a PEAR_Error object on failure.
    * 
    */
    
    function setFormattedName($text = null)
    {
        $this->autoparam = 'FN';
        
        if ($text === null) {
            
            // no text was specified for the FN, so build it
            // from the current N components if an N exists
            if (is_array($this->value['N'])) {
                
                // build from N.
                // first (given) name, first iteration, first repetition
                $text .= $this->getValue('N', 0, VCARD_N_GIVEN, 0);
            
                // add a space after, if there was text
                if ($text != '') {
                    $text .= ' ';
                }
                
                // last (family) name, first iteration, first repetition
                $text .= $this->getValue('N', 0, VCARD_N_FAMILY, 0);
                
                // add a space after, if there was text
                if ($text != '') {
                    $text .= ' ';
                }
                
                // last-name suffix, first iteration, first repetition
                $text .= $this->getValue('N', 0, VCARD_N_SUFFIX, 0);
                
                
            } else {
                
                // no N exists, and no FN was set, so return.
                return $this->raiseError('FN not specified and N not set; cannot set FN.');
                
            }
        
        }
        
        $this->setValue('FN', 0, 0, $text);
        
    }
    
    
    /**
    * 
    * Gets back the full FN component value.  Only ever returns iteration
    * zero, because only one FN component is allowed per vCard.
    * 
    * @access public
    * 
    * @return string The FN value of the vCard.
    * 
    */
    
    function getFormattedName()
    {
        return $this->getMeta('FN', 0) . $this->getValue('FN', 0, 0);
    }
    
    
    /**
    * 
    * Sets the version of the the vCard.  Only one iteration.
    * 
    * @access public
    * 
    * @param string $text The text value of the verson text ('3.0' or '2.1').
    * 
    * @return mixed Void on success, or a PEAR_Error object on failure.
    * 
    */
    
    function setVersion($text = '3.0')
    {
        $this->autoparam = 'VERSION';
        if ($text != '3.0' && $text != '2.1') {
            return $this->raiseError('Version must be 3.0 or 2.1 to be valid.');
        } else {
            $this->setValue('VERSION', 0, 0, $text);
        }
    }
    
    
    /**
    * 
    * Gets back the version of the the vCard.  Only one iteration.
    * 
    * @access public
    * 
    * @return string The data-source of the vCard.
    * 
    */
    
    function getVersion()
    {
        return $this->getMeta('VERSION', 0) .
            $this->getValue('VERSION', 0);
    }
    
    
    /**
    * 
    * Sets the data-source of the the vCard.  Only one iteration.
    * 
    * @access public
    * 
    * @param string $text The text value of the data-source text.
    * 
    * @return void
    * 
    */
    
    function setSource($text)
    {
        $this->autoparam = 'SOURCE';
        $this->setValue('SOURCE', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the data-source of the the vCard.  Only one iteration.
    * 
    * @access public
    * 
    * @return string The data-source of the vCard.
    * 
    */
    
    function getSource()
    {
        return $this->getMeta('SOURCE', 0) .
            $this->getValue('SOURCE', 0, 0);
    }
    
    
    /**
    * 
    * Sets the displayed name of the vCard data-source.  Only one iteration.
    * If no name is specified, copies the value of SOURCE.
    * 
    * @access public
    * 
    * @param string $text The text value of the displayed data-source
    * name.  If null, copies the value of SOURCE.
    * 
    * @return mixed Void on success, or a PEAR_Error object on failure.
    * 
    */
    
    function setSourceName($text = null)
    {
        $this->autoparam = 'NAME';
        
        if ($text === null) {
            if (is_array($this->value['SOURCE'])) {
                $text = $this->getValue('SOURCE', 0, 0);
            } else {
                return $this->raiseError('NAME not specified and SOURCE not set; cannot set NAME.');
            }
        }
        
        $this->setValue('NAME', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the displayed data-source name of the the vCard.  Only
    * one iteration.
    * 
    * @access public
    * 
    * @return string The data-source name of the vCard.
    * 
    */
    
    function getSourceName()
    {
        return $this->getMeta('NAME', 0) .
            $this->getValue('NAME', 0, 0);
    }
    
    
    
    
    /**
    * 
    * Sets the value of the PHOTO component.  There is only one allowed
    * per vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setPhoto($text)
    {
        $this->autoparam = 'PHOTO';
        $this->setValue('PHOTO', 0, 0, $text);
    }
    
    
    
    /**
    * 
    * Gets back the value of the PHOTO component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getPhoto()
    {
        return $this->getMeta('PHOTO') .
            $this->getValue('PHOTO', 0, 0);
    }
    
    
    
    
    /**
    * 
    * Sets the value of the LOGO component.  There is only one allowed
    * per vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setLogo($text)
    {
        $this->autoparam = 'LOGO';
        $this->setValue('LOGO', 0, 0, $text);
    }
    
    
    
    /**
    * 
    * Gets back the value of the LOGO component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getLogo()
    {
        return $this->getMeta('LOGO') . $this->getValue('LOGO', 0, 0);
    }
    
    
    
    /**
    * 
    * Sets the value of the SOUND component.  There is only one allowed
    * per vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setSound($text)
    {
        $this->autoparam = 'SOUND';
        $this->setValue('SOUND', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the SOUND component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getSound()
    {
        return $this->getMeta('SOUND') .
            $this->getValue('SOUND', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of the KEY component.  There is only one allowed
    * per vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setKey($text)
    {
        $this->autoparam = 'KEY';
        $this->setValue('KEY', 0, 0, $text);
    }
    
    
    
    /**
    * 
    * Gets back the value of the KEY component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getKey()
    {
        return $this->getMeta('KEY') . $this->getValue('KEY', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of the BDAY component.  There is only one allowed
    * per vCard. Date format is "yyyy-mm-dd[Thh:ii[:ss[Z|-06:00]]]".
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    
    function setBirthday($text)
    {
        $this->autoparam = 'BDAY';
        $this->setValue('BDAY', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the BDAY component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getBirthday()
    {
        return $this->getMeta('BDAY') . $this->getValue('BDAY', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of the TZ component.  There is only one allowed per
    * vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setTZ($text)
    {
        $this->autoparam = 'TZ';
        $this->setValue('TZ', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the TZ component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getTZ()
    {
        return $this->getMeta('TZ') . $this->getValue('TZ', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of the MAILER component.  There is only one allowed
    * per vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setMailer($text)
    {
        $this->autoparam = 'MAILER';
        $this->setValue('MAILER', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the MAILER component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getMailer()
    {
        return $this->getMeta('MAILER') .
            $this->getValue('MAILER', 0, 0);
    }
    
    /**
    * 
    * Sets the value of the NOTE component.  There is only one allowed
    * per vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setNote($text)
    {
        $this->autoparam = 'NOTE';
        $this->setValue('NOTE', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the NOTE component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getNote()
    {
        return $this->getMeta('NOTE') . $this->getValue('NOTE', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of the TITLE component.  There is only one allowed
    * per vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setTitle($text)
    {
        $this->autoparam = 'TITLE';
        $this->setValue('TITLE', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the TITLE component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getTitle()
    {
        return $this->getMeta('TITLE') .
            $this->getValue('TITLE', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of the ROLE component.  There is only one allowed
    * per vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setRole($text)
    {
        $this->autoparam = 'ROLE';
        $this->setValue('ROLE', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the ROLE component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getRole()
    {
        return $this->getMeta('ROLE') . $this->getValue('ROLE', 0, 0);
    }
    
    
    
    
    /**
    * 
    * Sets the value of the URL component.  There is only one allowed
    * per vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setURL($text)
    {
        $this->autoparam = 'URL';
        $this->setValue('URL', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the URL component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getURL()
    {
        return $this->getMeta('URL') . $this->getValue('URL', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of the CLASS component.  There is only one allowed
    * per vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setClass($text)
    {
        $this->autoparam = 'CLASS';
        $this->setValue('CLASS', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the CLASS component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getClass()
    {
        return $this->getMeta('CLASS') .
            $this->getValue('CLASS', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of the SORT-STRING component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function setSortString($text)
    {
        $this->autoparam = 'SORT-STRING';
        $this->setValue('SORT-STRING', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the SORT-STRING component.  There is only
    * one allowed per vCard.
    * 
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getSortString()
    {
        return $this->getMeta('SORT-STRING') .
            $this->getValue('SORT-STRING', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of the PRODID component.  There is only one allowed
    * per vCard.
    * 
    * @access public
    * 
    * @param string $text The value to set for this component.
    * 
    * @return void
    * 
    */
    
    function setProductID($text)
    {
        $this->autoparam = 'PRODID';
        $this->setValue('PRODID', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the PRODID component.  There is only one
    * allowed per vCard.
    * 
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getProductID()
    {
        return $this->getMeta('PRODID') .
            $this->getValue('PRODID', 0, 0);
    }
    
    
    
    
    /**
    * 
    * Sets the value of the REV component.  There is only one allowed
    * per vCard.
    * 
    * @access public
    * 
    * @param string $text The value to set for this component.
    * 
    * @return void
    * 
    */
    
    function setRevision($text)
    {
        $this->autoparam = 'REV';
        $this->setValue('REV', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the REV component.  There is only one
    * allowed per vCard.
    * 
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getRevision()
    {
        return $this->getMeta('REV') . $this->getValue('REV', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of the UID component.  There is only one allowed
    * per vCard.
    * 
    * @access public
    * 
    * @param string $text The value to set for this component.
    * 
    * @return void
    * 
    */
    
    function setUniqueID($text)
    {
        $this->autoparam = 'UID';
        $this->setValue('UID', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the UID component.  There is only one
    * allowed per vCard.
    * 
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getUniqueID()
    {
        return $this->getMeta('UID') . $this->getValue('UID', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of the AGENT component.  There is only one allowed
    * per vCard.
    * 
    * @access public
    * 
    * @param string $text The value to set for this component.
    * 
    * @return void
    * 
    */
    
    function setAgent($text)
    {
        $this->autoparam = 'AGENT';
        $this->setValue('AGENT', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the AGENT component.  There is only one
    * allowed per vCard.
    * 
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getAgent()
    {
        return $this->getMeta('AGENT') .
            $this->getValue('AGENT', 0, 0);
    }
    
    
    /**
    * 
    * Sets the value of both parts of the GEO component.  There is only
    * one GEO component allowed per vCard.
    * 
    * @access public
    * 
    * @param string $lat The value to set for the longitude part
    * (decimal, + or -).
    * 
    * @param string $lon The value to set for the latitude part
    * (decimal, + or -).
    * 
    * @return void
    * 
    */
    
    function setGeo($lat, $lon)
    {
        $this->autoparam = 'GEO';
        $this->setValue('GEO', 0, VCARD_GEO_LAT, $lat);
        $this->setValue('GEO', 0, VCARD_GEO_LON, $lon);
    }
    
    
    /**
    * 
    * Gets back the value of the GEO component.  There is only one
    * allowed per vCard.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getGeo()
    {
        return $this->getMeta('GEO', 0) .
            $this->getValue('GEO', 0, VCARD_GEO_LAT, 0) . ';' .
            $this->getValue('GEO', 0, VCARD_GEO_LON, 0);
    }
    
    
    /**
    * 
    * Sets the value of one entire ADR iteration.  There can be zero,
    * one, or more ADR components in a vCard.
    *
    * @access public
    * 
    * @param mixed $pob String (one repetition) or array (multiple
    * reptitions) of the p.o. box part of the ADR component iteration.
    * 
    * @param mixed $extend String (one repetition) or array (multiple
    * reptitions) of the "extended address" part of the ADR component
    * iteration.
    * 
    * @param mixed $street String (one repetition) or array (multiple
    * reptitions) of the street address part of the ADR component
    * iteration.
    * 
    * @param mixed $locality String (one repetition) or array (multiple
    * reptitions) of the locailty (e.g., city) part of the ADR component
    * iteration.
    * 
    * @param mixed $region String (one repetition) or array (multiple
    * reptitions) of the region (e.g., state, province, or governorate)
    * part of the ADR component iteration.
    * 
    * @param mixed $postcode String (one repetition) or array (multiple
    * reptitions) of the postal code (e.g., ZIP code) part of the ADR
    * component iteration.
    * 
    * @param mixed $country String (one repetition) or array (multiple
    * reptitions) of the country-name part of the ADR component
    * iteration.
    * 
    * @return void
    * 
    */
    
    function addAddress($pob, $extend, $street, $locality, $region,
        $postcode, $country)
    {
        $this->autoparam = 'ADR';
        $iter = $this->countIter('ADR');
        $this->setValue('ADR', $iter, VCARD_ADR_POB,       $pob);
        $this->setValue('ADR', $iter, VCARD_ADR_EXTEND,    $extend);
        $this->setValue('ADR', $iter, VCARD_ADR_STREET,    $street);
        $this->setValue('ADR', $iter, VCARD_ADR_LOCALITY,  $locality);
        $this->setValue('ADR', $iter, VCARD_ADR_REGION,    $region);
        $this->setValue('ADR', $iter, VCARD_ADR_POSTCODE,  $postcode);
        $this->setValue('ADR', $iter, VCARD_ADR_COUNTRY,   $country);
    }
    
    
    /**
    * 
    * Gets back the value of one ADR component iteration.
    *
    * @access public
    * 
    * @param int $iter The component iteration-number to get the value
    * for.
    * 
    * @return mixed The value of this component iteration, or a
    * PEAR_Error if the iteration is not valid.
    * 
    */
    
    function getAddress($iter)
    {
        if (! is_integer($iter) || $iter < 0) {
            
            return $this->raiseError('ADR iteration number not valid.');
        
        } else {
            
            return $this->getMeta('ADR', $iter) .
                $this->getValue('ADR', $iter, VCARD_ADR_POB) . ';' .
                $this->getValue('ADR', $iter, VCARD_ADR_EXTEND) . ';' .
                $this->getValue('ADR', $iter, VCARD_ADR_STREET) . ';' .
                $this->getValue('ADR', $iter, VCARD_ADR_LOCALITY) . ';' .
                $this->getValue('ADR', $iter, VCARD_ADR_REGION) . ';' .
                $this->getValue('ADR', $iter, VCARD_ADR_POSTCODE) . ';' .
                $this->getValue('ADR', $iter, VCARD_ADR_COUNTRY);
        }
    }
    
    
    /**
    * 
    * Sets the value of one LABEL component iteration.  There can be
    * zero, one, or more component iterations in a vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function addLabel($text)
    {
        $this->autoparam = 'LABEL';
        $iter = $this->countIter('LABEL');
        $this->setValue('LABEL', $iter, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of one iteration of the LABEL component. 
    * There can be zero, one, or more component iterations in a vCard.
    *
    * @access public
    * 
    * @param int $iter The component iteration-number to get the value
    * for.
    *
    * @return mixed The value of this component, or a PEAR_Error if
    * the iteration number is not valid.
    * 
    */
    
    function getLabel($iter)
    {
        if (! is_integer($iter) || $iter < 0) {
            return $this->raiseError('LABEL iteration number not valid.');
        } else {
            return $this->getMeta('LABEL', $iter) .
                $this->getValue('LABEL', $iter, 0);
        }
    }
    
    
    /**
    * 
    * Sets the value of one TEL component iteration.  There can be zero,
    * one, or more component iterations in a vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function addTelephone($text)
    {
        $this->autoparam = 'TEL';
        $iter = $this->countIter('TEL');
        $this->setValue('TEL', $iter, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of one iteration of the TEL component.  There
    * can be zero, one, or more component iterations in a vCard.
    *
    * @access public
    * 
    * @param int $iter The component iteration-number to get the value
    * for.
    *
    * @return mixed The value of this component, or a PEAR_Error if the
    * iteration number is not valid.
    * 
    */
    
    function getTelephone($iter)
    {
        if (! is_integer($iter) || $iter < 0) {
            return $this->raiseError('TEL iteration number not valid.');
        } else {
            return $this->getMeta('TEL', $iter) .
                $this->getValue('TEL', $iter, 0);
        }
    }
    
    /**
    * 
    * Sets the value of one EMAIL component iteration.  There can be zero,
    * one, or more component iterations in a vCard.
    *
    * @access public
    * 
    * @param string $text The value to set for this component.
    *
    * @return void
    * 
    */
    
    function addEmail($text)
    {
        $this->autoparam = 'EMAIL';
        $iter = $this->countIter('EMAIL');
        $this->setValue('EMAIL', $iter, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of one iteration of the EMAIL component.  There can
    * be zero, one, or more component iterations in a vCard.
    *
    * @access public
    * 
    * @param int $iter The component iteration-number to get the value
    * for.
    *
    * @return mixed The value of this component, or a PEAR_Error if the
    * iteration number is not valid.
    * 
    */
    
    function getEmail($iter)
    {
        if (! is_integer($iter) || $iter < 0) {
            return $this->raiseError('EMAIL iteration number not valid.');
        } else {
            return $this->getMeta('EMAIL', $iter) .
                $this->getValue('EMAIL', $iter, 0);
        }
    }
    
    
    /**
    * 
    * Sets the full value of the NICKNAME component.  There is only one
    * component iteration allowed per vCard, but there may be multiple
    * value repetitions in the iteration.
    *
    * @access public
    * 
    * @param mixed $text String (one repetition) or array (multiple
    * reptitions) of the component iteration value.
    *
    * @return void
    * 
    */
    
    function addNickname($text)
    {
        $this->autoparam = 'NICKNAME';
        $this->addValue('NICKNAME', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the NICKNAME component.  There is only one
    * component allowed per vCard, but there may be multiple value
    * repetitions in the iteration.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getNickname()
    {
        return $this->getMeta('NICKNAME') .
            $this->getValue('NICKNAME', 0, 0);
    }
    
    
    
    /**
    * 
    * Sets the full value of the CATEGORIES component.  There is only
    * one component iteration allowed per vCard, but there may be
    * multiple value repetitions in the iteration.
    *
    * @access public
    * 
    * @param mixed $text String (one repetition) or array (multiple
    * reptitions) of the component iteration value.
    *
    * @return void
    * 
    */
    
    function addCategories($text, $append = true)
    {
        $this->autoparam = 'CATEGORIES';
        $this->addValue('CATEGORIES', 0, 0, $text);
    }
    
    
    /**
    * 
    * Gets back the value of the CATEGORIES component.  There is only
    * one component allowed per vCard, but there may be multiple value
    * repetitions in the iteration.
    *
    * @access public
    * 
    * @return string The value of this component.
    * 
    */
    
    function getCategories()
    {
        return $this->getMeta('CATEGORIES', 0) .
            $this->getValue('CATEGORIES', 0, 0);
    }
    
    
    /**
    * 
    * Sets the full value of the ORG component.  There can be only one
    * ORG component in a vCard.
    * 
    * The ORG component can have one or more parts (as opposed to
    * repetitions of values within those parts).  The first part is the
    * highest-level organization, the second part is the next-highest,
    * the third part is the third-highest, and so on.  There can by any
    * number of parts in one ORG iteration.  (This is different from
    * other components, such as NICKNAME, where an iteration has only
    * one part but may have many repetitions within that part.)
    * 
    * @access public
    * 
    * @param mixed $text String (one ORG part) or array (of ORG
    * parts) to use as the value for the component iteration.
    * 
    * @return void
    * 
    */
    
    function addOrganization($text)
    {
        $this->autoparam = 'ORG';
        
        settype($text, 'array');
        
        $base = $this->countRept('ORG', 0);
        
        // start at the original base point, and add
        // new parts
        foreach ($text as $part => $val) {
            $this->setValue('ORG', 0, $base + $part, $val);
        }
    }
    
    
    /**
    * 
    * Gets back the value of the ORG component.
    * 
    * @return string The value of this component.
    * 
    */
    
    function getOrganization()
    {
        $text = $this->getMeta('ORG', 0);
        
        $k = $this->countRept('ORG', 0);
        $last = $k - 1;
        
        for ($part = 0; $part < $k; $part++) {
        
            $text .= $this->getValue('ORG', 0, $part);
            
            if ($part != $last) {
                $text .= ';';
            }
            
        }
        
        return $text;
    }
    
    
    /**
    * 
    * Builds a vCard from a Contact_Vcard_Parse result array.  Only send
    * one vCard from the parse-results.
    *
    * Usage (to build from first vCard in parsed results):
    * 
    * $parse = new Contact_Vcard_Parse(); // new parser
    * $info = $parse->fromFile('sample.vcf'); // parse file
    * 
    * $vcard = new Contact_Vcard_Build(); // new builder
    * $vcard->setFromArray($info[0]); // [0] is the first card
    * 
    * 
    * @access public
    * 
    * @param array $src One vCard entry as parsed using
    * Contact_Vcard_Parse.
    * 
    * @return void
    * 
    * @see Contact_Vcard_Parse::fromFile()
    * 
    * @see Contact_Vcard_Parse::fromText()
    * 
    */
    
    function setFromArray($src)
    {
        // reset to a blank values and params
        $this->value = array();
        $this->param = array();
        
        // loop through components (N, ADR, TEL, etc)
        foreach ($src AS $comp => $comp_val) {
            
            // set the autoparam property. not really needed, but let's
            // behave after an expected fashion, shall we?  ;-)
            $this->autoparam = $comp; 
            
            // iteration number of each component
            foreach ($comp_val AS $iter => $iter_val) {
                
                // value or param?
                foreach ($iter_val AS $kind => $kind_val) {
                
                    // part number
                    foreach ($kind_val AS $part => $part_val) {
                        
                        // repetition number and text value
                        foreach ($part_val AS $rept => $text) {
                            
                            // ignore data when $kind is neither 'value'
                            // nor 'param'
                            if (strtolower($kind) == 'value') {
                                $this->value[strtoupper($comp)][$iter][$part][$rept] = $text;
                            } elseif (strtolower($kind) == 'param') {
                                $this->param[strtoupper($comp)][$iter][$part][$rept] = $text;
                            }
                            
                        }
                    }
                }
            }
        }
    }
    
    
    /**
    *
    * Fetches a full vCard text block based on $this->value and
    * $this->param. The order of the returned components is similar to
    * their order in RFC 2426.  Honors the value of
    * $this->value['VERSION'] to determine which vCard components are
    * returned (2.1- or 3.0-compliant).
    *
    * @access public
    * 
    * @return string A properly formatted vCard text block.
    *
    */
    
    function fetch()
    {
        // vCard version is required
        if (! is_array($this->value['VERSION'])) {
            return $this->raiseError('VERSION not set (required).');
        }
        
        // FN component is required
        if (! is_array($this->value['FN'])) {
            return $this->raiseError('FN component not set (required).');
        }
        
        // N component is required
        if (! is_array($this->value['N'])) {
            return $this->raiseError('N component not set (required).');
        }
        
        // initialize the vCard lines
        $lines = array();
        
        // begin (required)
        $lines[] = "BEGIN:VCARD";
        
        // version (required)
        // available in both 2.1 and 3.0
        $lines[] = $this->getVersion();
        
        // formatted name (required)
        // available in both 2.1 and 3.0
        $lines[] = $this->getFormattedName();
        
        // structured name (required)
        // available in both 2.1 and 3.0
        $lines[] = $this->getName();
        
        // profile (3.0 only)
        if ($this->value['VERSION'][0][0][0] == '3.0') {
            $lines[] = "PROFILE:VCARD";
        }
        
        // displayed name of the data source  (3.0 only)
        if (isset($this->value['NAME']) &&
            $this->value['VERSION'][0][0][0] == '3.0') {
            $lines[] = $this->getSourceName();
        }
        
        // data source (3.0 only)
        if (isset($this->value['SOURCE']) &&
            $this->value['VERSION'][0][0][0] == '3.0') {
            $lines[] = $this->getSource();
        }
        
        // nicknames (3.0 only)
        if (isset($this->value['NICKNAME']) &&
            $this->value['VERSION'][0][0][0] == '3.0') {
            $lines[] = $this->getNickname();
        }
        
        // personal photo
        // available in both 2.1 and 3.0
        if (isset($this->value['PHOTO'])) {
            $lines[] = $this->getPhoto();
        }
        
        // bday
        // available in both 2.1 and 3.0
        if (isset($this->value['BDAY'])) {
            $lines[] = $this->getBirthday();
        }
        
        // adr
        // available in both 2.1 and 3.0
        if (isset($this->value['ADR'])) {
            foreach ($this->value['ADR'] as $key => $val) {
                $lines[] = $this->getAddress($key);
            }
        }
        
        // label
        // available in both 2.1 and 3.0
        if (isset($this->value['LABEL'])) {
            foreach ($this->value['LABEL'] as $key => $val) {
                $lines[] = $this->getLabel($key);
            }
        }
        
        // tel
        // available in both 2.1 and 3.0
        if (isset($this->value['TEL'])) {
            foreach ($this->value['TEL'] as $key => $val) {
                $lines[] = $this->getTelephone($key);
            }
        }
        
        // email
        // available in both 2.1 and 3.0
        if (isset($this->value['EMAIL'])) {
            foreach ($this->value['EMAIL'] as $key => $val) {
                $lines[] = $this->getEmail($key);
            }
        }
        
        // mailer
        // available in both 2.1 and 3.0
        if (isset($this->value['MAILER'])) {
            $lines[] = $this->getMailer();
        }
        
        // tz
        // available in both 2.1 and 3.0
        if (isset($this->value['TZ'])) {
            $lines[] = $this->getTZ();
        }
        
        // geo
        // available in both 2.1 and 3.0
        if (isset($this->value['GEO'])) {
            $lines[] = $this->getGeo();
        }
        
        // title
        // available in both 2.1 and 3.0
        if (isset($this->value['TITLE'])) {
            $lines[] = $this->getTitle();
        }
        
        // role
        // available in both 2.1 and 3.0
        if (isset($this->value['ROLE'])) {
            $lines[] = $this->getRole();
        }
        
        // company logo
        // available in both 2.1 and 3.0
        if (isset($this->value['LOGO'])) {
            $lines[] = $this->getLogo();
        }
        
        // agent
        // available in both 2.1 and 3.0
        if (isset($this->value['AGENT'])) {
            $lines[] = $this->getAgent();
        }
        
        // org
        // available in both 2.1 and 3.0
        if (isset($this->value['ORG'])) {
            $lines[] = $this->getOrganization();
        }
        
        // categories (3.0 only)
        if (isset($this->value['CATEGORIES']) &&
            $this->value['VERSION'][0][0][0] == '3.0') {
            $lines[] = $this->getCategories();
        }
        
        // note
        // available in both 2.1 and 3.0
        if (isset($this->value['NOTE'])) {
            $lines[] = $this->getNote();
        }
        
        // prodid (3.0 only)
        if (isset($this->value['PRODID']) &&
            $this->value['VERSION'][0][0][0] == '3.0') {
            $lines[] = $this->getProductID();
        }
        
        // rev
        // available in both 2.1 and 3.0
        if (isset($this->value['REV'])) {
            $lines[] = $this->getRevision();
        }
        
        // sort-string (3.0 only)
        if (isset($this->value['SORT-STRING']) &&
            $this->value['VERSION'][0][0][0] == '3.0') {
            $lines[] = $this->getSortString();
        }
        
        // name-pronounciation sound
        // available in both 2.1 and 3.0
        if (isset($this->value['SOUND'])) {
            $lines[] = $this->getSound();
        }
        
        // uid
        // available in both 2.1 and 3.0
        if (isset($this->value['UID'])) {
            $lines[] = $this->getUniqueID();
        }
        
        // url
        // available in both 2.1 and 3.0
        if (isset($this->value['URL'])) {
            $lines[] = $this->getURL();
        }
        
        // class (3.0 only)
        if (isset($this->value['CLASS']) &&
            $this->value['VERSION'][0][0][0] == '3.0') {
            $lines[] = $this->getClass();
        }
        
        // key
        // available in both 2.1 and 3.0
        if (isset($this->value['KEY'])) {
            $lines[] = $this->getKey();
        }
        
        // required
        $lines[] = "END:VCARD";
        
        // version 3.0 uses \n for new lines,
        // version 2.1 uses \r\n
        $newline = "\n";
        if ($this->value['VERSION'][0][0][0] == '2.1') {
            $newline = "\r\n";
        }
        
        // fold lines at 75 characters
        $regex = "(.{1,75})";
           foreach ($lines as $key => $val) {
            if (strlen($val) > 75) {
                // we trim to drop the last newline, which will be added
                // again by the implode function at the end of fetch()
                $lines[$key] = trim(preg_replace("/$regex/i", "\\1$newline ", $val));
            }
        }
        
        // compile the array of lines into a single text block
        // and return (with a trailing newline)
        return implode($newline, $lines). $newline;
    }
    

    /**
    *
    * Send the vCard as a downloadable file.
    *
    * @access public
    * 
    * @param string $filename The file name to give the vCard.
    *
    * @param string $disposition How the file should be sent, either
    * 'inline' or 'attachment'.
    * 
    * @param string $charset The character set to use, defaults to
    * 'us-ascii'.
    * 
    * @return void
    * 
    */
    
    function send($filename, $disposition = 'attachment',
        $charset = 'us-ascii')
    {
        $vcard = $this->fetch();
        
        header(
            'Content-Type: application/directory; ' . 
            'profile="vcard"; ' .
            'charset=' . $charset
        );
            
        header('Content-Length: ' . strlen($vcard));
        header("Content-Disposition: $disposition; filename=\"$filename\"");
        
        echo $vcard;
    }
    

    /**
    *
    * Count the number of iterations for an element type.
    *
    * @access public
    * 
    * @param string $type The element type to count iterations for
    * (ADR, ORG, etc).
    *
    * @return int The number of iterations for that type.
    * 
    */
    
    function countIter($type)
    {
        if (!isset($this->value[$type])) {
            return 0;
        } else {
            return count($this->value[$type]);
        }
    }
    

    /**
    *
    * Count the number of repetitions for an element type and iteration
    * number.
    *
    * @access public
    * 
    * @param string $type The element type to count iterations for
    * (ADR, ORG, etc).
    *
    * @param int $iter The iteration number to count repetitions for.
    *
    * @return int The number of repetitions for that type and iteration.
    * 
    */
    
    function countRept($type, $rept)
    {
        if (!isset($this->value[$type][$rept])) {
            return 0;
        } else {
            return count($this->value[$type][$rept]);
        }
    }
    
    
    /**
    *
    * Emulated destructor.
    *
    * @access private
    * 
    * @return boolean true
    *
    */
    
    function _Contact_Vcard_Build()
    {
        return true;
    }
}

?>