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|
<?php
/**
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
| |
| Copyright (C) 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 for afterthedeadline services |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
+-----------------------------------------------------------------------+
*/
/**
* Spellchecking backend implementation to work with an After the Deadline service.
* See https://www.afterthedeadline.com/ for more information.
*
* @package Framework
* @subpackage Utils
*/
class rcube_spellchecker_atd extends rcube_spellchecker_engine
{
const SERVICE_HOST = 'service.afterthedeadline.com';
const SERVICE_PORT = 80;
private $matches = [];
private $content;
private $langhosts = [
'fr' => 'fr.',
'de' => 'de.',
'pt' => 'pt.',
'es' => 'es.',
];
/**
* Return a list of languages supported by this backend
*
* @see rcube_spellchecker_engine::languages()
*/
function languages()
{
$langs = array_values($this->langhosts);
$langs[] = 'en';
return $langs;
}
/**
* Set content and check spelling
*
* @see rcube_spellchecker_engine::check()
*/
function check($text)
{
$this->content = $text;
// spell check uri is configured
$rcube = rcube::get_instance();
$url = $rcube->config->get('spellcheck_uri');
$key = $rcube->config->get('spellcheck_atd_key');
if ($url) {
$a_uri = parse_url($url);
$ssl = ($a_uri['scheme'] == 'https' || $a_uri['scheme'] == 'ssl');
$port = !empty($a_uri['port']) ? $a_uri['port'] : ($ssl ? 443 : 80);
$host = ($ssl ? 'ssl://' : '') . $a_uri['host'];
$path = $a_uri['path'] . (!empty($a_uri['query']) ? '?'.$a_uri['query'] : '') . $this->lang;
}
else {
$host = self::SERVICE_HOST;
$port = self::SERVICE_PORT;
$path = '/checkDocument';
// prefix host for other languages than 'en'
$lang = substr($this->lang, 0, 2);
if (!empty($this->langhosts[$lang])) {
$host = $this->langhosts[$lang] . $host;
}
}
$postdata = 'data=' . urlencode($text);
if (!empty($key)) {
$postdata .= '&key=' . urlencode($key);
}
$response = $headers = '';
$in_header = true;
if ($fp = fsockopen($host, $port, $errno, $errstr, 30)) {
$out = "POST $path HTTP/1.0\r\n";
$out .= "Host: " . str_replace('ssl://', '', $host) . "\r\n";
$out .= "Content-Length: " . strlen($postdata) . "\r\n";
$out .= "Content-Type: application/x-www-form-urlencoded\r\n";
$out .= "Connection: Close\r\n\r\n";
$out .= $postdata;
fwrite($fp, $out);
while (!feof($fp)) {
if ($in_header) {
$line = fgets($fp, 512);
$headers .= $line;
if (trim($line) == '') {
$in_header = false;
}
}
else {
$response .= fgets($fp, 1024);
}
}
fclose($fp);
}
// parse HTTP response headers
if (preg_match('!^HTTP/1.\d (\d+)(.+)!', $headers, $m)) {
$http_status = $m[1];
if ($http_status != '200') {
$this->error = 'HTTP ' . $m[1] . $m[2];
}
}
if (!$response) {
$this->error = "Empty result from spelling engine";
}
try {
$result = new SimpleXMLElement($response);
}
catch (Exception $e) {
$this->error = "Unexpected response from server: " . $response;
return [];
}
$matches = [];
foreach ($result->error as $error) {
if (strval($error->type) == 'spelling') {
$word = strval($error->string);
// skip exceptions
if ($this->dictionary->is_exception($word)) {
continue;
}
$prefix = strval($error->precontext);
$start = $prefix ? mb_strpos($text, $prefix) : 0;
$pos = mb_strpos($text, $word, $start);
$len = mb_strlen($word);
$num = 0;
$match = [$word, $pos, $len, null, []];
foreach ($error->suggestions->option as $option) {
$match[4][] = strval($option);
if (++$num == self::MAX_SUGGESTIONS) {
break;
}
}
$matches[] = $match;
}
}
$this->matches = $matches;
return $matches;
}
/**
* Returns suggestions for the specified word
*
* @see rcube_spellchecker_engine::get_words()
*/
function get_suggestions($word)
{
$matches = $word ? $this->check($word) : $this->matches;
if (!empty($matches[0][4])) {
return $matches[0][4];
}
return [];
}
/**
* Returns misspelled words
*
* @see rcube_spellchecker_engine::get_suggestions()
*/
function get_words($text = null)
{
if ($text) {
$matches = $this->check($text);
}
else {
$matches = $this->matches;
$text = $this->content;
}
$result = [];
foreach ($matches as $m) {
$result[] = mb_substr($text, $m[1], $m[2], RCUBE_CHARSET);
}
return $result;
}
}
|
