82 lines
2.7 KiB
PHP
82 lines
2.7 KiB
PHP
<?php
|
|
/**
|
|
* Name: Compact Language Detector
|
|
* Description: Improved language detection
|
|
* Version: 0.1
|
|
* Author: Michael Vogel <heluecht@pirati.ca>
|
|
*/
|
|
|
|
use Friendica\Core\Hook;
|
|
use Friendica\Core\Logger;
|
|
use Friendica\DI;
|
|
|
|
function cld_install()
|
|
{
|
|
Hook::register('detect_languages', __FILE__, 'cld_detect_languages');
|
|
}
|
|
|
|
function cld_detect_languages(array &$data)
|
|
{
|
|
if (!in_array('cld2', get_loaded_extensions())) {
|
|
Logger::warning('CLD2 is not installed.');
|
|
return;
|
|
}
|
|
|
|
if (!class_exists('CLD2Detector')) {
|
|
Logger::warning('CLD2Detector class does not exist.');
|
|
return;
|
|
}
|
|
|
|
if (!class_exists('CLD2Encoding')) {
|
|
Logger::warning('CLD2Encoding class does not exist.');
|
|
return;
|
|
}
|
|
|
|
$cld2 = new \CLD2Detector();
|
|
|
|
$cld2->setEncodingHint(CLD2Encoding::UTF8); // optional, hints about text encoding
|
|
$cld2->setPlainText(true);
|
|
|
|
$result = $cld2->detect($data['text']);
|
|
|
|
if ($data['detected']) {
|
|
$original = array_key_first($data['detected']);
|
|
} else {
|
|
$original = '';
|
|
}
|
|
|
|
$detected = DI::l10n()->toISO6391($result['language_code']);
|
|
|
|
// languages that aren't supported via the base language detection or tend to false detections
|
|
if ((strlen($detected) == 3) || in_array($detected, ['ht', 'kk', 'ku', 'ky', 'lg', 'mg', 'mk', 'mt', 'ny', 'rw', 'st', 'su', 'tg', 'ts', 'xx'])) {
|
|
return;
|
|
}
|
|
|
|
if (!$result['is_reliable']) {
|
|
Logger::debug('Unreliable detection', ['uri-id' => $data['uri-id'], 'original' => $original, 'detected' => $detected, 'name' => $result['language_name'], 'probability' => $result['language_probability'], 'text' => $data['text']]);
|
|
if (($original == $detected) && ($data['detected'][$original] < $result['language_probability'] / 100)) {
|
|
$data['detected'][$original] = $result['language_probability'] / 100;
|
|
}
|
|
return;
|
|
}
|
|
|
|
$available = array_keys(DI::l10n()->getLanguageCodes());
|
|
|
|
if (!in_array($detected, $available)) {
|
|
Logger::debug('Unsupported language', ['uri-id' => $data['uri-id'], 'original' => $original, 'detected' => $detected, 'name' => $result['language_name'], 'probability' => $result['language_probability'], 'text' => $data['text']]);
|
|
return;
|
|
}
|
|
|
|
if ($original != $detected) {
|
|
Logger::debug('Detected different language', ['uri-id' => $data['uri-id'], 'original' => $original, 'detected' => $detected, 'name' => $result['language_name'], 'probability' => $result['language_probability'], 'text' => $data['text']]);
|
|
}
|
|
|
|
$length = count($data['detected']);
|
|
if ($length > 0) {
|
|
unset($data['detected'][$detected]);
|
|
$data['detected'] = array_merge([$detected => $result['language_probability'] / 100], array_slice($data['detected'], 0, $length - 1));
|
|
} else {
|
|
$data['detected'] = [$detected => $result['language_probability'] / 100];
|
|
}
|
|
}
|