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<?php
/*
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
| |
| Copyright (C) 2008-2013, 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: |
| Spellchecking backend implementation to work with Googiespell |
+-----------------------------------------------------------------------+
| Author: Aleksander Machniak <machniak@kolabsys.com> |
| Author: Thomas Bruederli <roundcube@gmail.com> |
+-----------------------------------------------------------------------+
*/
/**
* Spellchecking backend implementation to work with a Googiespell service
*
* @package Framework
* @subpackage Utils
*/
class rcube_spellcheck_googie extends rcube_spellcheck_engine
{
const GOOGIE_HOST = 'ssl://spell.roundcube.net';
const GOOGIE_PORT = 443;
private $matches = array();
private $content;
/**
* Return a list of languages supported by this backend
*
* @see rcube_spellcheck_engine::languages()
*/
function languages()
{
return array('am','ar','ar','bg','br','ca','cs','cy','da',
'de_CH','de_DE','el','en_GB','en_US',
'eo','es','et','eu','fa','fi','fr_FR','ga','gl','gl',
'he','hr','hu','hy','is','it','ku','lt','lv','nl',
'pl','pt_BR','pt_PT','ro','ru',
'sk','sl','sv','uk');
}
/**
* Set content and check spelling
*
* @see rcube_spellcheck_engine::check()
*/
function check($text)
{
$this->content = $text;
if (empty($text)) {
return $this->matches = array();
}
// spell check uri is configured
$url = rcube::get_instance()->config->get('spellcheck_uri');
if ($url) {
$a_uri = parse_url($url);
$ssl = ($a_uri['scheme'] == 'https' || $a_uri['scheme'] == 'ssl');
$port = $a_uri['port'] ? $a_uri['port'] : ($ssl ? 443 : 80);
$host = ($ssl ? 'ssl://' : '') . $a_uri['host'];
$path = $a_uri['path'] . ($a_uri['query'] ? '?'.$a_uri['query'] : '') . $this->lang;
}
else {
$host = self::GOOGIE_HOST;
$port = self::GOOGIE_PORT;
$path = '/tbproxy/spell?lang=' . $this->lang;
}
$path .= sprintf('&key=%06d', $_SESSION['user_id']);
$gtext = '<?xml version="1.0" encoding="utf-8" ?>'
.'<spellrequest textalreadyclipped="0" ignoredups="0" ignoredigits="1" ignoreallcaps="1">'
.'<text>' . htmlspecialchars($text, ENT_QUOTES, RCUBE_CHARSET) . '</text>'
.'</spellrequest>';
$store = '';
if ($fp = fsockopen($host, $port, $errno, $errstr, 30)) {
$out = "POST $path HTTP/1.0\r\n";
$out .= "Host: " . str_replace('ssl://', '', $host) . "\r\n";
$out .= "User-Agent: Roundcube Webmail/" . RCMAIL_VERSION . " (Googiespell Wrapper)\r\n";
$out .= "Content-Length: " . strlen($gtext) . "\r\n";
$out .= "Content-Type: text/xml\r\n";
$out .= "Connection: Close\r\n\r\n";
$out .= $gtext;
fwrite($fp, $out);
while (!feof($fp))
$store .= fgets($fp, 128);
fclose($fp);
}
// parse HTTP response
if (preg_match('!^HTTP/1.\d (\d+)(.+)!', $store, $m)) {
$http_status = $m[1];
if ($http_status != '200') {
$this->error = 'HTTP ' . $m[1] . $m[2];
$this->error .= "\n" . $store;
}
}
if (!$store) {
$this->error = "Empty result from spelling engine";
}
else if (preg_match('/<spellresult error="([^"]+)"/', $store, $m) && $m[1]) {
$this->error = "Error code $m[1] returned";
$this->error .= preg_match('/<errortext>([^<]+)/', $store, $m) ? ": " . html_entity_decode($m[1]) : '';
}
preg_match_all('/<c o="([^"]*)" l="([^"]*)" s="([^"]*)">([^<]*)<\/c>/', $store, $matches, PREG_SET_ORDER);
// skip exceptions (if appropriate options are enabled)
foreach ($matches as $idx => $m) {
$word = mb_substr($text, $m[1], $m[2], RCUBE_CHARSET);
// skip exceptions
if ($this->dictionary->is_exception($word)) {
unset($matches[$idx]);
}
}
$this->matches = $matches;
return $matches;
}
/**
* Returns suggestions for the specified word
*
* @see rcube_spellcheck_engine::get_words()
*/
function get_suggestions($word)
{
$matches = $word ? $this->check($word) : $this->matches;
if ($matches[0][4]) {
$suggestions = explode("\t", $matches[0][4]);
if (sizeof($suggestions) > self::MAX_SUGGESTIONS) {
$suggestions = array_slice($suggestions, 0, self::MAX_SUGGESTIONS);
}
return $suggestions;
}
return array();
}
/**
* Returns misspelled words
*
* @see rcube_spellcheck_engine::get_suggestions()
*/
function get_words($text = null)
{
if ($text) {
$matches = $this->check($text);
}
else {
$matches = $this->matches;
$text = $this->content;
}
$result = array();
foreach ($matches as $m) {
$result[] = mb_substr($text, $m[1], $m[2], RCUBE_CHARSET);
}
return $result;
}
}
