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<?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 <pjones@ciaweb.net> |
// +----------------------------------------------------------------------+
//
// $Id: Contact_Vcard_Parse.php,v 1.6 2003/04/08 16:01:34 ciaweb Exp $
/**
*
* Parser for vCards.
*
* This class parses vCard 2.1 and 3.0 sources from file or text into a
* structured array.
*
* Usage:
*
* <code>
* // include this class file
* require_once 'Contact_Vcard_Parse.php';
*
* // instantiate a parser object
* $parse = new Contact_Vcard_Parse();
*
* // parse a vCard file and store the data
* // in $cardinfo
* $cardinfo = $parse->fromFile('sample.vcf');
*
* // view the card info array
* echo '<pre>';
* print_r($cardinfo);
* echo '</pre>';
* </code>
*
*
* @author Paul M. Jones <pjones@ciaweb.net>
* @package Contact_Vcard_Parse
* @version $Revision: 1.6 $
*
*/
class Contact_Vcard_Parse {
/**
*
* Constructor.
*
* @access public
* @return void
*
*/
function Contact_Vcard_Parse()
{
}
/**
*
* Reads a file for parsing, then sends it to $this->fromText()
* and returns the results.
*
* @access public
*
* @param array $filename The filename to read for vCard information.
*
* @return array An array of of vCard information extracted from the
* file.
*
* @see Contact_Vcard_Parse::_fromText()
* @see Contact_Vcard_Parse::_fromArray()
*
*/
function fromFile($filename, $decode_qp = true)
{
// get the file data
$text = implode('', file($filename));
// dump to, and get return from, the fromText() method.
return $this->fromText($text, $decode_qp);
}
/**
*
* Prepares a block of text for parsing, then sends it through and
* returns the results from $this->fromArray().
*
* @access public
*
* @param array $text A block of text to read for vCard information.
*
* @return array An array of vCard information extracted from the
* source text.
*
* @see Contact_Vcard_Parse::_fromArray()
*
*/
function fromText($text, $decode_qp = true)
{
// convert all kinds of line endings to Unix-standard and get
// rid of double blank lines.
$this->convertLineEndings($text);
// unfold lines. concat two lines where line 1 ends in \n and
// line 2 starts with any amount of whitespace. only removes
// the first whitespace character, leaves others in place.
$fold_regex = '(\n)([ |\t])';
$text = preg_replace("/$fold_regex/i", "", $text);
// convert the resulting text to an array of lines
$lines = explode("\n", $text);
// parse the array of lines and return vCard info
return $this->_fromArray($lines, $decode_qp);
}
/**
*
* Converts line endings in text.
*
* Takes any text block and converts all line endings to UNIX
* standard. DOS line endings are \r\n, Mac are \r, and UNIX is \n.
* As a side-effect, all double-newlines (\n\n) are converted to a
* single-newline.
*
* NOTE: Acts on the text block in-place; does not return a value.
*
* @access public
*
* @param string $text The string on which to convert line endings.
*
* @return void
*
*/
function convertLineEndings(&$text)
{
// first, replace \r with \n to fix up from DOS and Mac
$text = str_replace("\r", "\n", $text);
// now eliminate all instances of double-newlines that result
// from having converted \r\n to \n\n (from DOS). note that
// this removes newlines in general, not only if they resulted
// from the earlier conversion of \r.
$text = str_replace("\n\n", "\n", $text);
}
/**
*
* Splits a string into an array at semicolons. Honors backslash-
* escaped semicolons (i.e., splits at ';' not '\;').
*
* @access public
*
* @param string $text The string to split into an array.
*
* @param bool $convertSingle If splitting the string results in a
* single array element, return a string instead of a one-element
* array.
*
* @return mixed An array of values, or a single string.
*
*/
function splitBySemi($text, $convertSingle = false)
{
// we use these double-backs (\\) because they get get converted
// to single-backs (\) by preg_split. the quad-backs (\\\\) end
// up as as double-backs (\\), which is what preg_split requires
// to indicate a single backslash (\). what a mess.
$regex = '(?<!\\\\)(\;)';
$tmp = preg_split("/$regex/i", $text);
// if there is only one array-element and $convertSingle is
// true, then return only the value of that one array element
// (instead of returning the array).
if ($convertSingle && count($tmp) == 1) {
return $tmp[0];
} else {
return $tmp;
}
}
/**
*
* Splits a string into an array at commas. Honors backslash-
* escaped commas (i.e., splits at ',' not '\,').
*
* @access public
*
* @param string $text The string to split into an array.
*
* @param bool $convertSingle If splitting the string results in a
* single array element, return a string instead of a one-element
* array.
*
* @return mixed An array of values, or a single string.
*
*/
function splitByComma($text, $convertSingle = false)
{
// we use these double-backs (\\) because they get get converted
// to single-backs (\) by preg_split. the quad-backs (\\\\) end
// up as as double-backs (\\), which is what preg_split requires
// to indicate a single backslash (\). ye gods, how ugly.
$regex = '(?<!\\\\)(\,)';
$tmp = preg_split("/$regex/i", $text);
// if there is only one array-element and $convertSingle is
// true, then return only the value of that one array element
// (instead of returning the array).
if ($convertSingle && count($tmp) == 1) {
return $tmp[0];
} else {
return $tmp;
}
}
/**
*
* Used to make string human-readable after being a vCard value.
*
* Converts...
* \; => ;
* \, => ,
* literal \n => newline
*
* @access public
*
* @param mixed $text The text to unescape.
*
* @return void
*
*/
function unescape(&$text)
{
if (is_array($text)) {
foreach ($text as $key => $val) {
$this->unescape($val);
$text[$key] = $val;
}
} else {
$text = str_replace('\;', ';', $text);
$text = str_replace('\,', ',', $text);
$text = str_replace('\n', "\n", $text);
}
}
/**
*
* Emulated destructor.
*
* @access private
* @return boolean true
*
*/
function _Contact_Vcard_Parse()
{
return true;
}
/**
*
* Parses an array of source lines and returns an array of vCards.
* Each element of the array is itself an array expressing the types,
* parameters, and values of each part of the vCard. Processes both
* 2.1 and 3.0 vCard sources.
*
* @access private
*
* @param array $source An array of lines to be read for vCard
* information.
*
* @return array An array of of vCard information extracted from the
* source array.
*
*/
function _fromArray($source, $decode_qp = true)
{
// the info array will hold all resulting vCard information.
$info = array();
// tells us whether the source text indicates the beginning of a
// new vCard with a BEGIN:VCARD tag.
$begin = false;
// holds information about the current vCard being read from the
// source text.
$card = array();
// loop through each line in the source array
foreach ($source as $line) {
// if the line is blank, skip it.
if (trim($line) == '') {
continue;
}
// find the first instance of ':' on the line. The part
// to the left of the colon is the type and parameters;
// the part to the right of the colon is the value data.
$pos = strpos($line, ':');
// if there is no colon, skip the line.
if ($pos === false) {
continue;
}
// get the left and right portions
$left = trim(substr($line, 0, $pos));
$right = trim(substr($line, $pos+1, strlen($line)));
// have we started yet?
if (! $begin) {
// nope. does this line indicate the beginning of
// a new vCard?
if (strtoupper($left) == 'BEGIN' &&
strtoupper($right) == 'VCARD') {
// tell the loop that we've begun a new card
$begin = true;
}
// regardless, loop to the next line of source. if begin
// is still false, the next loop will check the line. if
// begin has now been set to true, the loop will start
// collecting card info.
continue;
} else {
// yep, we've started, but we don't know how far along
// we are in the card. is this the ending line of the
// current vCard?
if (strtoupper($left) == 'END' &&
strtoupper($right) == 'VCARD') {
// yep, we're done. keep the info from the current
// card...
$info[] = $card;
// ...and reset to grab a new card if one exists in
// the source array.
$begin = false;
$card = array();
} else {
// we're not on an ending line, so collect info from
// this line into the current card. split the
// left-portion of the line into a type-definition
// (the kind of information) and parameters for the
// type.
$typedef = $this->_getTypeDef($left);
$params = $this->_getParams($left);
// if we are decoding quoted-printable, do so now.
// QUOTED-PRINTABLE is not allowed in version 3.0,
// but we don't check for versioning, so we do it
// regardless. ;-)
$this->_decode_qp($params, $right);
// now get the value-data from the line, based on
// the typedef
switch ($typedef) {
case 'N':
// structured name of the person
$value = $this->_parseN($right);
break;
case 'ADR':
// structured address of the person
$value = $this->_parseADR($right);
break;
case 'NICKNAME':
// nicknames
$value = $this->_parseNICKNAME($right);
break;
case 'ORG':
// organizations the person belongs to
$value = $this->_parseORG($right);
break;
case 'CATEGORIES':
// categories to which this card is assigned
$value = $this->_parseCATEGORIES($right);
break;
case 'GEO':
// geographic coordinates
$value = $this->_parseGEO($right);
break;
default:
// by default, just grab the plain value. keep
// as an array to make sure *all* values are
// arrays. for consistency. ;-)
$value = array(array($right));
break;
}
// add the type, parameters, and value to the
// current card array. note that we allow multiple
// instances of the same type, which might be dumb
// in some cases (e.g., N).
$card[$typedef][] = array(
'param' => $params,
'value' => $value
);
}
}
}
$this->unescape($info);
return $info;
}
/**
*
* Takes a vCard line and extracts the Type-Definition for the line.
*
* @access private
*
* @param string $text A left-part (before-the-colon part) from a
* vCard line.
*
* @return string The type definition for the line.
*
*/
function _getTypeDef($text)
{
// split the text by semicolons
$split = $this->splitBySemi($text);
// only return first element (the typedef)
return $split[0];
}
/**
*
* Finds the Type-Definition parameters for a vCard line.
*
* @access private
*
* @param string $text A left-part (before-the-colon part) from a
* vCard line.
*
* @return mixed An array of parameters.
*
*/
function _getParams($text)
{
// split the text by semicolons into an array
$split = $this->splitBySemi($text);
// drop the first element of the array (the type-definition)
array_shift($split);
// set up an array to retain the parameters, if any
$params = array();
// loop through each parameter. the params may be in the format...
// "TYPE=type1,type2,type3"
// ...or...
// "TYPE=type1;TYPE=type2;TYPE=type3"
foreach ($split as $full) {
// split the full parameter at the equal sign so we can tell
// the parameter name from the parameter value
$tmp = explode("=", $full);
// the key is the left portion of the parameter (before
// '='). if in 2.1 format, the key may in fact be the
// parameter value, not the parameter name.
$key = strtoupper(trim($tmp[0]));
// get the parameter name by checking to see if it's in
// vCard 2.1 or 3.0 format.
$name = $this->_getParamName($key);
// list of all parameter values
$listall = trim($tmp[1]);
// if there is a value-list for this parameter, they are
// separated by commas, so split them out too.
$list = $this->splitByComma($listall);
// now loop through each value in the parameter and retain
// it. if the value is blank, that means it's a 2.1-style
// param, and the key itself is the value.
foreach ($list as $val) {
if (trim($val) != '') {
// 3.0 formatted parameter
$params[$name][] = trim($val);
} else {
// 2.1 formatted parameter
$params[$name][] = $key;
}
}
// if, after all this, there are no parameter values for the
// parameter name, retain no info about the parameter (saves
// ram and checking-time later).
if (count($params[$name]) == 0) {
unset($params[$name]);
}
}
// return the parameters array.
return $params;
}
/**
*
* Looks at the parameters of a vCard line; if one of them is
* ENCODING[] => QUOTED-PRINTABLE then decode the text in-place.
*
* @access private
*
* @param array $params A parameter array from a vCard line.
*
* @param string $text A right-part (after-the-colon part) from a
* vCard line.
*
* @return void
*
*/
function _decode_qp(&$params, &$text)
{
// loop through each parameter
foreach ($params as $param_key => $param_val) {
// check to see if it's an encoding param
if (trim(strtoupper($param_key)) == 'ENCODING') {
// loop through each encoding param value
foreach ($param_val as $enc_key => $enc_val) {
// if any of the values are QP, decode the text
// in-place and return
if (trim(strtoupper($enc_val)) == 'QUOTED-PRINTABLE') {
$text = quoted_printable_decode($text);
return;
}
}
}
}
}
/**
*
* Returns parameter names from 2.1-formatted vCards.
*
* The vCard 2.1 specification allows parameter values without a
* name. The parameter name is then determined from the unique
* parameter value.
*
* Shamelessly lifted from Frank Hellwig <frank@hellwig.org> and his
* vCard PHP project <http://vcardphp.sourceforge.net>.
*
* @access private
*
* @param string $value The first element in a parameter name-value
* pair.
*
* @return string The proper parameter name (TYPE, ENCODING, or
* VALUE).
*
*/
function _getParamName($value)
{
static $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'
);
// CONTENT-ID added by pmj
static $values = array (
'INLINE', 'URL', 'CID', 'CONTENT-ID'
);
// 8BIT added by pmj
static $encodings = array (
'7BIT', '8BIT', 'QUOTED-PRINTABLE', 'BASE64'
);
// changed by pmj to the following so that the name defaults to
// whatever the original value was. Frank Hellwig's original
// code was "$name = 'UNKNOWN'".
$name = $value;
if (in_array($value, $types)) {
$name = 'TYPE';
} elseif (in_array($value, $values)) {
$name = 'VALUE';
} elseif (in_array($value, $encodings)) {
$name = 'ENCODING';
}
return $name;
}
/**
*
* Parses a vCard line value identified as being of the "N"
* (structured name) type-defintion.
*
* @access private
*
* @param string $text The right-part (after-the-colon part) of a
* vCard line.
*
* @return array An array of key-value pairs where the key is the
* portion-name and the value is the portion-value. The value itself
* may be an array as well if multiple comma-separated values were
* indicated in the vCard source.
*
*/
function _parseN($text)
{
$tmp = $this->splitBySemi($text);
return array(
$this->splitByComma($tmp[0]), // family (last)
$this->splitByComma($tmp[1]), // given (first)
$this->splitByComma($tmp[2]), // addl (middle)
$this->splitByComma($tmp[3]), // prefix
$this->splitByComma($tmp[4]) // suffix
);
}
/**
*
* Parses a vCard line value identified as being of the "ADR"
* (structured address) type-defintion.
*
* @access private
*
* @param string $text The right-part (after-the-colon part) of a
* vCard line.
*
* @return array An array of key-value pairs where the key is the
* portion-name and the value is the portion-value. The value itself
* may be an array as well if multiple comma-separated values were
* indicated in the vCard source.
*
*/
function _parseADR($text)
{
$tmp = $this->splitBySemi($text);
return array(
$this->splitByComma($tmp[0]), // pob
$this->splitByComma($tmp[1]), // extend
$this->splitByComma($tmp[2]), // street
$this->splitByComma($tmp[3]), // locality (city)
$this->splitByComma($tmp[4]), // region (state)
$this->splitByComma($tmp[5]), // postcode (ZIP)
$this->splitByComma($tmp[6]) // country
);
}
/**
*
* Parses a vCard line value identified as being of the "NICKNAME"
* (informal or descriptive name) type-defintion.
*
* @access private
*
* @param string $text The right-part (after-the-colon part) of a
* vCard line.
*
* @return array An array of nicknames.
*
*/
function _parseNICKNAME($text)
{
return array($this->splitByComma($text));
}
/**
*
* Parses a vCard line value identified as being of the "ORG"
* (organizational info) type-defintion.
*
* @access private
*
* @param string $text The right-part (after-the-colon part) of a
* vCard line.
*
* @return array An array of organizations; each element of the array
* is itself an array, which indicates primary organization and
* sub-organizations.
*
*/
function _parseORG($text)
{
$tmp = $this->splitbySemi($text);
$list = array();
foreach ($tmp as $val) {
$list[] = array($val);
}
return $list;
}
/**
*
* Parses a vCard line value identified as being of the "CATEGORIES"
* (card-category) type-defintion.
*
* @access private
*
* @param string $text The right-part (after-the-colon part) of a
* vCard line.
*
* @return mixed An array of categories.
*
*/
function _parseCATEGORIES($text)
{
return array($this->splitByComma($text));
}
/**
*
* Parses a vCard line value identified as being of the "GEO"
* (geographic coordinate) type-defintion.
*
* @access private
*
* @param string $text The right-part (after-the-colon part) of a
* vCard line.
*
* @return mixed An array of lat-lon geocoords.
*
*/
function _parseGEO($text)
{
$tmp = $this->splitBySemi($text);
return array(
array($tmp[0]), // lat
array($tmp[1]) // lon
);
}
}
?>
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