From 922a1fb714f6842f41e1b224e2e99fb9673183da Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Fri, 23 Nov 2012 03:05:59 -0500
Subject: [PATCH] Add lost rcube_vcard.php file
---
program/lib/Roundcube/rcube_vcard.php | 793 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 793 insertions(+), 0 deletions(-)
diff --git a/program/lib/Roundcube/rcube_vcard.php b/program/lib/Roundcube/rcube_vcard.php
new file mode 100644
index 0000000..7b59e20
--- /dev/null
+++ b/program/lib/Roundcube/rcube_vcard.php
@@ -0,0 +1,793 @@
+<?php
+
+/*
+ +-----------------------------------------------------------------------+
+ | program/include/rcube_vcard.php |
+ | |
+ | This file is part of the Roundcube Webmail client |
+ | Copyright (C) 2008-2012, The Roundcube Dev Team |
+ | |
+ | Licensed under the GNU General Public License version 3 or |
+ | any later version with exceptions for skins & plugins. |
+ | See the README file for a full license statement. |
+ | |
+ | PURPOSE: |
+ | Logical representation of a vcard address record |
+ +-----------------------------------------------------------------------+
+ | Author: Thomas Bruederli <roundcube@gmail.com> |
+ | Author: Aleksander Machniak <alec@alec.pl> |
+ +-----------------------------------------------------------------------+
+*/
+
+
+/**
+ * Logical representation of a vcard-based address record
+ * Provides functions to parse and export vCard data format
+ *
+ * @package Framework
+ * @subpackage Addressbook
+ */
+class rcube_vcard
+{
+ private static $values_decoded = false;
+ private $raw = array(
+ 'FN' => array(),
+ 'N' => array(array('','','','','')),
+ );
+ private static $fieldmap = array(
+ 'phone' => 'TEL',
+ 'birthday' => 'BDAY',
+ 'website' => 'URL',
+ 'notes' => 'NOTE',
+ 'email' => 'EMAIL',
+ 'address' => 'ADR',
+ 'jobtitle' => 'TITLE',
+ 'department' => 'X-DEPARTMENT',
+ 'gender' => 'X-GENDER',
+ 'maidenname' => 'X-MAIDENNAME',
+ 'anniversary' => 'X-ANNIVERSARY',
+ 'assistant' => 'X-ASSISTANT',
+ 'manager' => 'X-MANAGER',
+ 'spouse' => 'X-SPOUSE',
+ 'edit' => 'X-AB-EDIT',
+ );
+ private $typemap = array('IPHONE' => 'mobile', 'CELL' => 'mobile', 'WORK,FAX' => 'workfax');
+ private $phonetypemap = array('HOME1' => 'HOME', 'BUSINESS1' => 'WORK', 'BUSINESS2' => 'WORK2', 'BUSINESSFAX' => 'WORK,FAX', 'MOBILE' => 'CELL');
+ private $addresstypemap = array('BUSINESS' => 'WORK');
+ private $immap = array('X-JABBER' => 'jabber', 'X-ICQ' => 'icq', 'X-MSN' => 'msn', 'X-AIM' => 'aim', 'X-YAHOO' => 'yahoo', 'X-SKYPE' => 'skype', 'X-SKYPE-USERNAME' => 'skype');
+
+ public $business = false;
+ public $displayname;
+ public $surname;
+ public $firstname;
+ public $middlename;
+ public $nickname;
+ public $organization;
+ public $email = array();
+
+ public static $eol = "\r\n";
+
+ /**
+ * Constructor
+ */
+ public function __construct($vcard = null, $charset = RCMAIL_CHARSET, $detect = false, $fieldmap = array())
+ {
+ if (!empty($fielmap))
+ $this->extend_fieldmap($fieldmap);
+
+ if (!empty($vcard))
+ $this->load($vcard, $charset, $detect);
+ }
+
+
+ /**
+ * Load record from (internal, unfolded) vcard 3.0 format
+ *
+ * @param string vCard string to parse
+ * @param string Charset of string values
+ * @param boolean True if loading a 'foreign' vcard and extra heuristics for charset detection is required
+ */
+ public function load($vcard, $charset = RCMAIL_CHARSET, $detect = false)
+ {
+ self::$values_decoded = false;
+ $this->raw = self::vcard_decode($vcard);
+
+ // resolve charset parameters
+ if ($charset == null) {
+ $this->raw = self::charset_convert($this->raw);
+ }
+ // vcard has encoded values and charset should be detected
+ else if ($detect && self::$values_decoded &&
+ ($detected_charset = self::detect_encoding(self::vcard_encode($this->raw))) && $detected_charset != RCMAIL_CHARSET) {
+ $this->raw = self::charset_convert($this->raw, $detected_charset);
+ }
+
+ // consider FN empty if the same as the primary e-mail address
+ if ($this->raw['FN'][0][0] == $this->raw['EMAIL'][0][0])
+ $this->raw['FN'][0][0] = '';
+
+ // find well-known address fields
+ $this->displayname = $this->raw['FN'][0][0];
+ $this->surname = $this->raw['N'][0][0];
+ $this->firstname = $this->raw['N'][0][1];
+ $this->middlename = $this->raw['N'][0][2];
+ $this->nickname = $this->raw['NICKNAME'][0][0];
+ $this->organization = $this->raw['ORG'][0][0];
+ $this->business = ($this->raw['X-ABSHOWAS'][0][0] == 'COMPANY') || (join('', (array)$this->raw['N'][0]) == '' && !empty($this->organization));
+
+ foreach ((array)$this->raw['EMAIL'] as $i => $raw_email)
+ $this->email[$i] = is_array($raw_email) ? $raw_email[0] : $raw_email;
+
+ // make the pref e-mail address the first entry in $this->email
+ $pref_index = $this->get_type_index('EMAIL', 'pref');
+ if ($pref_index > 0) {
+ $tmp = $this->email[0];
+ $this->email[0] = $this->email[$pref_index];
+ $this->email[$pref_index] = $tmp;
+ }
+ }
+
+
+ /**
+ * Return vCard data as associative array to be unsed in Roundcube address books
+ *
+ * @return array Hash array with key-value pairs
+ */
+ public function get_assoc()
+ {
+ $out = array('name' => $this->displayname);
+ $typemap = $this->typemap;
+
+ // copy name fields to output array
+ foreach (array('firstname','surname','middlename','nickname','organization') as $col) {
+ if (strlen($this->$col))
+ $out[$col] = $this->$col;
+ }
+
+ if ($this->raw['N'][0][3])
+ $out['prefix'] = $this->raw['N'][0][3];
+ if ($this->raw['N'][0][4])
+ $out['suffix'] = $this->raw['N'][0][4];
+
+ // convert from raw vcard data into associative data for Roundcube
+ foreach (array_flip(self::$fieldmap) as $tag => $col) {
+ foreach ((array)$this->raw[$tag] as $i => $raw) {
+ if (is_array($raw)) {
+ $k = -1;
+ $key = $col;
+ $subtype = '';
+
+ if (!empty($raw['type'])) {
+ $combined = join(',', self::array_filter((array)$raw['type'], 'internet,pref', true));
+ $combined = strtoupper($combined);
+
+ if ($typemap[$combined]) {
+ $subtype = $typemap[$combined];
+ }
+ else if ($typemap[$raw['type'][++$k]]) {
+ $subtype = $typemap[$raw['type'][$k]];
+ }
+ else {
+ $subtype = strtolower($raw['type'][$k]);
+ }
+
+ while ($k < count($raw['type']) && ($subtype == 'internet' || $subtype == 'pref'))
+ $subtype = $typemap[$raw['type'][++$k]] ? $typemap[$raw['type'][$k]] : strtolower($raw['type'][$k]);
+ }
+
+ // read vcard 2.1 subtype
+ if (!$subtype) {
+ foreach ($raw as $k => $v) {
+ if (!is_numeric($k) && $v === true && ($k = strtolower($k))
+ && !in_array($k, array('pref','internet','voice','base64'))
+ ) {
+ $k_uc = strtoupper($k);
+ $subtype = $typemap[$k_uc] ? $typemap[$k_uc] : $k;
+ break;
+ }
+ }
+ }
+
+ // force subtype if none set
+ if (!$subtype && preg_match('/^(email|phone|address|website)/', $key))
+ $subtype = 'other';
+
+ if ($subtype)
+ $key .= ':' . $subtype;
+
+ // split ADR values into assoc array
+ if ($tag == 'ADR') {
+ list(,, $value['street'], $value['locality'], $value['region'], $value['zipcode'], $value['country']) = $raw;
+ $out[$key][] = $value;
+ }
+ else
+ $out[$key][] = $raw[0];
+ }
+ else {
+ $out[$col][] = $raw;
+ }
+ }
+ }
+
+ // handle special IM fields as used by Apple
+ foreach ($this->immap as $tag => $type) {
+ foreach ((array)$this->raw[$tag] as $i => $raw) {
+ $out['im:'.$type][] = $raw[0];
+ }
+ }
+
+ // copy photo data
+ if ($this->raw['PHOTO'])
+ $out['photo'] = $this->raw['PHOTO'][0][0];
+
+ return $out;
+ }
+
+
+ /**
+ * Convert the data structure into a vcard 3.0 string
+ */
+ public function export($folded = true)
+ {
+ $vcard = self::vcard_encode($this->raw);
+ return $folded ? self::rfc2425_fold($vcard) : $vcard;
+ }
+
+
+ /**
+ * Clear the given fields in the loaded vcard data
+ *
+ * @param array List of field names to be reset
+ */
+ public function reset($fields = null)
+ {
+ if (!$fields)
+ $fields = array_merge(array_values(self::$fieldmap), array_keys($this->immap), array('FN','N','ORG','NICKNAME','EMAIL','ADR','BDAY'));
+
+ foreach ($fields as $f)
+ unset($this->raw[$f]);
+
+ if (!$this->raw['N'])
+ $this->raw['N'] = array(array('','','','',''));
+ if (!$this->raw['FN'])
+ $this->raw['FN'] = array();
+
+ $this->email = array();
+ }
+
+
+ /**
+ * Setter for address record fields
+ *
+ * @param string Field name
+ * @param string Field value
+ * @param string Type/section name
+ */
+ public function set($field, $value, $type = 'HOME')
+ {
+ $field = strtolower($field);
+ $type_uc = strtoupper($type);
+
+ switch ($field) {
+ case 'name':
+ case 'displayname':
+ $this->raw['FN'][0][0] = $this->displayname = $value;
+ break;
+
+ case 'surname':
+ $this->raw['N'][0][0] = $this->surname = $value;
+ break;
+
+ case 'firstname':
+ $this->raw['N'][0][1] = $this->firstname = $value;
+ break;
+
+ case 'middlename':
+ $this->raw['N'][0][2] = $this->middlename = $value;
+ break;
+
+ case 'prefix':
+ $this->raw['N'][0][3] = $value;
+ break;
+
+ case 'suffix':
+ $this->raw['N'][0][4] = $value;
+ break;
+
+ case 'nickname':
+ $this->raw['NICKNAME'][0][0] = $this->nickname = $value;
+ break;
+
+ case 'organization':
+ $this->raw['ORG'][0][0] = $this->organization = $value;
+ break;
+
+ case 'photo':
+ if (strpos($value, 'http:') === 0) {
+ // TODO: fetch file from URL and save it locally?
+ $this->raw['PHOTO'][0] = array(0 => $value, 'url' => true);
+ }
+ else {
+ $this->raw['PHOTO'][0] = array(0 => $value, 'base64' => (bool) preg_match('![^a-z0-9/=+-]!i', $value));
+ }
+ break;
+
+ case 'email':
+ $this->raw['EMAIL'][] = array(0 => $value, 'type' => array_filter(array('INTERNET', $type_uc)));
+ $this->email[] = $value;
+ break;
+
+ case 'im':
+ // save IM subtypes into extension fields
+ $typemap = array_flip($this->immap);
+ if ($field = $typemap[strtolower($type)])
+ $this->raw[$field][] = array(0 => $value);
+ break;
+
+ case 'birthday':
+ case 'anniversary':
+ if (($val = rcube_utils::strtotime($value)) && ($fn = self::$fieldmap[$field]))
+ $this->raw[$fn][] = array(0 => date('Y-m-d', $val), 'value' => array('date'));
+ break;
+
+ case 'address':
+ if ($this->addresstypemap[$type_uc])
+ $type = $this->addresstypemap[$type_uc];
+
+ $value = $value[0] ? $value : array('', '', $value['street'], $value['locality'], $value['region'], $value['zipcode'], $value['country']);
+
+ // fall through if not empty
+ if (!strlen(join('', $value)))
+ break;
+
+ default:
+ if ($field == 'phone' && $this->phonetypemap[$type_uc])
+ $type = $this->phonetypemap[$type_uc];
+
+ if (($tag = self::$fieldmap[$field]) && (is_array($value) || strlen($value))) {
+ $index = count($this->raw[$tag]);
+ $this->raw[$tag][$index] = (array)$value;
+ if ($type) {
+ $typemap = array_flip($this->typemap);
+ $this->raw[$tag][$index]['type'] = explode(',', ($typemap[$type_uc] ? $typemap[$type_uc] : $type));
+ }
+ }
+ break;
+ }
+ }
+
+ /**
+ * Setter for individual vcard properties
+ *
+ * @param string VCard tag name
+ * @param array Value-set of this vcard property
+ * @param boolean Set to true if the value-set should be appended instead of replacing any existing value-set
+ */
+ public function set_raw($tag, $value, $append = false)
+ {
+ $index = $append ? count($this->raw[$tag]) : 0;
+ $this->raw[$tag][$index] = (array)$value;
+ }
+
+
+ /**
+ * Find index with the '$type' attribute
+ *
+ * @param string Field name
+ * @return int Field index having $type set
+ */
+ private function get_type_index($field, $type = 'pref')
+ {
+ $result = 0;
+ if ($this->raw[$field]) {
+ foreach ($this->raw[$field] as $i => $data) {
+ if (is_array($data['type']) && in_array_nocase('pref', $data['type']))
+ $result = $i;
+ }
+ }
+
+ return $result;
+ }
+
+
+ /**
+ * Convert a whole vcard (array) to UTF-8.
+ * If $force_charset is null, each member value that has a charset parameter will be converted
+ */
+ private static function charset_convert($card, $force_charset = null)
+ {
+ foreach ($card as $key => $node) {
+ foreach ($node as $i => $subnode) {
+ if (is_array($subnode) && (($charset = $force_charset) || ($subnode['charset'] && ($charset = $subnode['charset'][0])))) {
+ foreach ($subnode as $j => $value) {
+ if (is_numeric($j) && is_string($value))
+ $card[$key][$i][$j] = rcube_charset::convert($value, $charset);
+ }
+ unset($card[$key][$i]['charset']);
+ }
+ }
+ }
+
+ return $card;
+ }
+
+
+ /**
+ * Extends fieldmap definition
+ */
+ public function extend_fieldmap($map)
+ {
+ if (is_array($map))
+ self::$fieldmap = array_merge($map, self::$fieldmap);
+ }
+
+
+ /**
+ * Factory method to import a vcard file
+ *
+ * @param string vCard file content
+ * @return array List of rcube_vcard objects
+ */
+ public static function import($data)
+ {
+ $out = array();
+
+ // check if charsets are specified (usually vcard version < 3.0 but this is not reliable)
+ if (preg_match('/charset=/i', substr($data, 0, 2048)))
+ $charset = null;
+ // detect charset and convert to utf-8
+ else if (($charset = self::detect_encoding($data)) && $charset != RCMAIL_CHARSET) {
+ $data = rcube_charset::convert($data, $charset);
+ $data = preg_replace(array('/^[\xFE\xFF]{2}/', '/^\xEF\xBB\xBF/', '/^\x00+/'), '', $data); // also remove BOM
+ $charset = RCMAIL_CHARSET;
+ }
+
+ $vcard_block = '';
+ $in_vcard_block = false;
+
+ foreach (preg_split("/[\r\n]+/", $data) as $i => $line) {
+ if ($in_vcard_block && !empty($line))
+ $vcard_block .= $line . "\n";
+
+ $line = trim($line);
+
+ if (preg_match('/^END:VCARD$/i', $line)) {
+ // parse vcard
+ $obj = new rcube_vcard(self::cleanup($vcard_block), $charset, true, self::$fieldmap);
+ if (!empty($obj->displayname) || !empty($obj->email))
+ $out[] = $obj;
+
+ $in_vcard_block = false;
+ }
+ else if (preg_match('/^BEGIN:VCARD$/i', $line)) {
+ $vcard_block = $line . "\n";
+ $in_vcard_block = true;
+ }
+ }
+
+ return $out;
+ }
+
+
+ /**
+ * Normalize vcard data for better parsing
+ *
+ * @param string vCard block
+ * @return string Cleaned vcard block
+ */
+ private static function cleanup($vcard)
+ {
+ // Convert special types (like Skype) to normal type='skype' classes with this simple regex ;)
+ $vcard = preg_replace(
+ '/item(\d+)\.(TEL|EMAIL|URL)([^:]*?):(.*?)item\1.X-ABLabel:(?:_\$!<)?([\w-() ]*)(?:>!\$_)?./s',
+ '\2;type=\5\3:\4',
+ $vcard);
+
+ // convert Apple X-ABRELATEDNAMES into X-* fields for better compatibility
+ $vcard = preg_replace_callback(
+ '/item(\d+)\.(X-ABRELATEDNAMES)([^:]*?):(.*?)item\1.X-ABLabel:(?:_\$!<)?([\w-() ]*)(?:>!\$_)?./s',
+ array('self', 'x_abrelatednames_callback'),
+ $vcard);
+
+ // Remove cruft like item1.X-AB*, item1.ADR instead of ADR, and empty lines
+ $vcard = preg_replace(array('/^item\d*\.X-AB.*$/m', '/^item\d*\./m', "/\n+/"), array('', '', "\n"), $vcard);
+
+ // convert X-WAB-GENDER to X-GENDER
+ if (preg_match('/X-WAB-GENDER:(\d)/', $vcard, $matches)) {
+ $value = $matches[1] == '2' ? 'male' : 'female';
+ $vcard = preg_replace('/X-WAB-GENDER:\d/', 'X-GENDER:' . $value, $vcard);
+ }
+
+ // if N doesn't have any semicolons, add some
+ $vcard = preg_replace('/^(N:[^;\R]*)$/m', '\1;;;;', $vcard);
+
+ return $vcard;
+ }
+
+ private static function x_abrelatednames_callback($matches)
+ {
+ return 'X-' . strtoupper($matches[5]) . $matches[3] . ':'. $matches[4];
+ }
+
+ private static function rfc2425_fold_callback($matches)
+ {
+ // chunk_split string and avoid lines breaking multibyte characters
+ $c = 71;
+ $out .= substr($matches[1], 0, $c);
+ for ($n = $c; $c < strlen($matches[1]); $c++) {
+ // break if length > 75 or mutlibyte character starts after position 71
+ if ($n > 75 || ($n > 71 && ord($matches[1][$c]) >> 6 == 3)) {
+ $out .= "\r\n ";
+ $n = 0;
+ }
+ $out .= $matches[1][$c];
+ $n++;
+ }
+
+ return $out;
+ }
+
+ public static function rfc2425_fold($val)
+ {
+ return preg_replace_callback('/([^\n]{72,})/', array('self', 'rfc2425_fold_callback'), $val);
+ }
+
+
+ /**
+ * Decodes a vcard block (vcard 3.0 format, unfolded)
+ * into an array structure
+ *
+ * @param string vCard block to parse
+ * @return array Raw data structure
+ */
+ private static function vcard_decode($vcard)
+ {
+ // Perform RFC2425 line unfolding and split lines
+ $vcard = preg_replace(array("/\r/", "/\n\s+/"), '', $vcard);
+ $lines = explode("\n", $vcard);
+ $data = array();
+
+ for ($i=0; $i < count($lines); $i++) {
+ if (!preg_match('/^([^:]+):(.+)$/', $lines[$i], $line))
+ continue;
+
+ if (preg_match('/^(BEGIN|END)$/i', $line[1]))
+ continue;
+
+ // convert 2.1-style "EMAIL;internet;home:" to 3.0-style "EMAIL;TYPE=internet;TYPE=home:"
+ if (($data['VERSION'][0] == "2.1") && preg_match('/^([^;]+);([^:]+)/', $line[1], $regs2) && !preg_match('/^TYPE=/i', $regs2[2])) {
+ $line[1] = $regs2[1];
+ foreach (explode(';', $regs2[2]) as $prop)
+ $line[1] .= ';' . (strpos($prop, '=') ? $prop : 'TYPE='.$prop);
+ }
+
+ if (preg_match_all('/([^\\;]+);?/', $line[1], $regs2)) {
+ $entry = array();
+ $field = strtoupper($regs2[1][0]);
+ $enc = null;
+
+ foreach($regs2[1] as $attrid => $attr) {
+ if ((list($key, $value) = explode('=', $attr)) && $value) {
+ $value = trim($value);
+ if ($key == 'ENCODING') {
+ $value = strtoupper($value);
+ // add next line(s) to value string if QP line end detected
+ if ($value == 'QUOTED-PRINTABLE') {
+ while (preg_match('/=$/', $lines[$i]))
+ $line[2] .= "\n" . $lines[++$i];
+ }
+ $enc = $value;
+ }
+ else {
+ $lc_key = strtolower($key);
+ $entry[$lc_key] = array_merge((array)$entry[$lc_key], (array)self::vcard_unquote($value, ','));
+ }
+ }
+ else if ($attrid > 0) {
+ $entry[strtolower($key)] = true; // true means attr without =value
+ }
+ }
+
+ // decode value
+ if ($enc || !empty($entry['base64'])) {
+ // save encoding type (#1488432)
+ if ($enc == 'B') {
+ $entry['encoding'] = 'B';
+ // should we use vCard 3.0 instead?
+ // $entry['base64'] = true;
+ }
+ $line[2] = self::decode_value($line[2], $enc ? $enc : 'base64');
+ }
+
+ if ($enc != 'B' && empty($entry['base64'])) {
+ $line[2] = self::vcard_unquote($line[2]);
+ }
+
+ $entry = array_merge($entry, (array) $line[2]);
+ $data[$field][] = $entry;
+ }
+ }
+
+ unset($data['VERSION']);
+ return $data;
+ }
+
+
+ /**
+ * Decode a given string with the encoding rule from ENCODING attributes
+ *
+ * @param string String to decode
+ * @param string Encoding type (quoted-printable and base64 supported)
+ * @return string Decoded 8bit value
+ */
+ private static function decode_value($value, $encoding)
+ {
+ switch (strtolower($encoding)) {
+ case 'quoted-printable':
+ self::$values_decoded = true;
+ return quoted_printable_decode($value);
+
+ case 'base64':
+ case 'b':
+ self::$values_decoded = true;
+ return base64_decode($value);
+
+ default:
+ return $value;
+ }
+ }
+
+
+ /**
+ * Encodes an entry for storage in our database (vcard 3.0 format, unfolded)
+ *
+ * @param array Raw data structure to encode
+ * @return string vCard encoded string
+ */
+ static function vcard_encode($data)
+ {
+ foreach((array)$data as $type => $entries) {
+ /* valid N has 5 properties */
+ while ($type == "N" && is_array($entries[0]) && count($entries[0]) < 5)
+ $entries[0][] = "";
+
+ // make sure FN is not empty (required by RFC2426)
+ if ($type == "FN" && empty($entries))
+ $entries[0] = $data['EMAIL'][0][0];
+
+ foreach((array)$entries as $entry) {
+ $attr = '';
+ if (is_array($entry)) {
+ $value = array();
+ foreach($entry as $attrname => $attrvalues) {
+ if (is_int($attrname)) {
+ if (!empty($entry['base64']) || $entry['encoding'] == 'B') {
+ $attrvalues = base64_encode($attrvalues);
+ }
+ $value[] = $attrvalues;
+ }
+ else if (is_bool($attrvalues)) {
+ if ($attrvalues) {
+ $attr .= strtoupper(";$attrname"); // true means just tag, not tag=value, as in PHOTO;BASE64:...
+ }
+ }
+ else {
+ foreach((array)$attrvalues as $attrvalue)
+ $attr .= strtoupper(";$attrname=") . self::vcard_quote($attrvalue, ',');
+ }
+ }
+ }
+ else {
+ $value = $entry;
+ }
+
+ // skip empty entries
+ if (self::is_empty($value))
+ continue;
+
+ $vcard .= self::vcard_quote($type) . $attr . ':' . self::vcard_quote($value) . self::$eol;
+ }
+ }
+
+ return 'BEGIN:VCARD' . self::$eol . 'VERSION:3.0' . self::$eol . $vcard . 'END:VCARD';
+ }
+
+
+ /**
+ * Join indexed data array to a vcard quoted string
+ *
+ * @param array Field data
+ * @param string Separator
+ * @return string Joined and quoted string
+ */
+ private static function vcard_quote($s, $sep = ';')
+ {
+ if (is_array($s)) {
+ foreach($s as $part) {
+ $r[] = self::vcard_quote($part, $sep);
+ }
+ return(implode($sep, (array)$r));
+ }
+ else {
+ return strtr($s, array('\\' => '\\\\', "\r" => '', "\n" => '\n', ',' => '\,', ';' => '\;'));
+ }
+ }
+
+
+ /**
+ * Split quoted string
+ *
+ * @param string vCard string to split
+ * @param string Separator char/string
+ * @return array List with splited values
+ */
+ private static function vcard_unquote($s, $sep = ';')
+ {
+ // break string into parts separated by $sep, but leave escaped $sep alone
+ if (count($parts = explode($sep, strtr($s, array("\\$sep" => "\007")))) > 1) {
+ foreach($parts as $s) {
+ $result[] = self::vcard_unquote(strtr($s, array("\007" => "\\$sep")), $sep);
+ }
+ return $result;
+ }
+ else {
+ return strtr($s, array("\r" => '', '\\\\' => '\\', '\n' => "\n", '\N' => "\n", '\,' => ',', '\;' => ';', '\:' => ':'));
+ }
+ }
+
+
+ /**
+ * Check if vCard entry is empty: empty string or an array with
+ * all entries empty.
+ *
+ * @param mixed $value Attribute value (string or array)
+ *
+ * @return bool True if the value is empty, False otherwise
+ */
+ private static function is_empty($value)
+ {
+ foreach ((array)$value as $v) {
+ if (((string)$v) !== '') {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ /**
+ * Extract array values by a filter
+ *
+ * @param array Array to filter
+ * @param keys Array or comma separated list of values to keep
+ * @param boolean Invert key selection: remove the listed values
+ * @return array The filtered array
+ */
+ private static function array_filter($arr, $values, $inverse = false)
+ {
+ if (!is_array($values))
+ $values = explode(',', $values);
+
+ $result = array();
+ $keep = array_flip((array)$values);
+ foreach ($arr as $key => $val)
+ if ($inverse != isset($keep[strtolower($val)]))
+ $result[$key] = $val;
+
+ return $result;
+ }
+
+ /**
+ * Returns UNICODE type based on BOM (Byte Order Mark)
+ *
+ * @param string Input string to test
+ * @return string Detected encoding
+ */
+ private static function detect_encoding($string)
+ {
+ $fallback = rcube::get_instance()->config->get('default_charset', 'ISO-8859-1'); // fallback to Latin-1
+
+ return rcube_charset::detect($string, $fallback);
+ }
+
+}
--
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