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Diffstat (limited to 'program/include/rcube_vcard.php')
| -rw-r--r-- | program/include/rcube_vcard.php | 825 |
1 files changed, 0 insertions, 825 deletions
diff --git a/program/include/rcube_vcard.php b/program/include/rcube_vcard.php deleted file mode 100644 index 00903c257..000000000 --- a/program/include/rcube_vcard.php +++ /dev/null @@ -1,825 +0,0 @@ -<?php - -/* - +-----------------------------------------------------------------------+ - | program/include/rcube_vcard.php | - | | - | This file is part of the Roundcube Webmail client | - | Copyright (C) 2008-2011, 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> | - +-----------------------------------------------------------------------+ -*/ - - -/** - * Logical representation of a vcard-based address record - * Provides functions to parse and export vCard data format - * - * @package Addressbook - * @author Thomas Bruederli <roundcube@gmail.com> - */ -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'); - 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 $notes; - 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); - $typemap = array_flip($this->typemap); - - switch ($field) { - case 'name': - case 'displayname': - $this->raw['FN'][0][0] = $value; - break; - - case 'surname': - $this->raw['N'][0][0] = $value; - break; - - case 'firstname': - $this->raw['N'][0][1] = $value; - break; - - case 'middlename': - $this->raw['N'][0][2] = $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] = $value; - break; - - case 'organization': - $this->raw['ORG'][0][0] = $value; - break; - - case 'photo': - if (strpos($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) - $this->raw[$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) - { - if (substr($string, 0, 4) == "\0\0\xFE\xFF") return 'UTF-32BE'; // Big Endian - if (substr($string, 0, 4) == "\xFF\xFE\0\0") return 'UTF-32LE'; // Little Endian - if (substr($string, 0, 2) == "\xFE\xFF") return 'UTF-16BE'; // Big Endian - if (substr($string, 0, 2) == "\xFF\xFE") return 'UTF-16LE'; // Little Endian - if (substr($string, 0, 3) == "\xEF\xBB\xBF") return 'UTF-8'; - - // heuristics - if ($string[0] == "\0" && $string[1] == "\0" && $string[2] == "\0" && $string[3] != "\0") return 'UTF-32BE'; - if ($string[0] != "\0" && $string[1] == "\0" && $string[2] == "\0" && $string[3] == "\0") return 'UTF-32LE'; - if ($string[0] == "\0" && $string[1] != "\0" && $string[2] == "\0" && $string[3] != "\0") return 'UTF-16BE'; - if ($string[0] != "\0" && $string[1] == "\0" && $string[2] != "\0" && $string[3] == "\0") return 'UTF-16LE'; - - // use mb_detect_encoding() - $encodings = array('UTF-8', 'ISO-8859-1', 'ISO-8859-2', 'ISO-8859-3', - 'ISO-8859-4', 'ISO-8859-5', 'ISO-8859-6', 'ISO-8859-7', 'ISO-8859-8', 'ISO-8859-9', - 'ISO-8859-10', 'ISO-8859-13', 'ISO-8859-14', 'ISO-8859-15', 'ISO-8859-16', - 'WINDOWS-1252', 'WINDOWS-1251', 'BIG5', 'GB2312'); - - if (function_exists('mb_detect_encoding') && ($enc = mb_detect_encoding($string, $encodings))) - return $enc; - - // No match, check for UTF-8 - // from http://w3.org/International/questions/qa-forms-utf-8.html - if (preg_match('/\A( - [\x09\x0A\x0D\x20-\x7E] - | [\xC2-\xDF][\x80-\xBF] - | \xE0[\xA0-\xBF][\x80-\xBF] - | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} - | \xED[\x80-\x9F][\x80-\xBF] - | \xF0[\x90-\xBF][\x80-\xBF]{2} - | [\xF1-\xF3][\x80-\xBF]{3} - | \xF4[\x80-\x8F][\x80-\xBF]{2} - )*\z/xs', substr($string, 0, 2048))) - return 'UTF-8'; - - return rcube::get_instance()->config->get('default_charset', 'ISO-8859-1'); # fallback to Latin-1 - } - -} |