File: //home/parhudrw/saifookhan.com/wp-content/plugins/amazon-polly/admin/AmazonAI-Translator.php
<?php
/**
* Class responsible for providing logic for translate functionality of the plugin.
* Translate functionality is being provided using Amazon Translate service.
*
* @link amazon.com
* @since 2.0.3
*
* @package Amazonpolly
* @subpackage Amazonpolly/admin
*/
class AmazonAI_Translator {
/**
* @var AmazonAI_Common
*/
private $common;
/**
* AmazonAI_Translator constructor.
*
* @param AmazonAI_Common $common
*/
public function __construct(AmazonAI_Common $common) {
$this->common = $common;
}
/**
* Method validates if plugin has got access to Amazon Translate service by performing simple
* translation of single word. If it doesn't custom Error will be thrown.
*
* @param string $translate_client Amazon Translate client reference.
* @since 2.0.0
*/
public function is_translate_accessible( $translate_client ) {
$accessible = false;
$option_value = get_option( 'amazon_polly_trans_validated' );
// Method validates if plugin already detected that Amazon Translate
// service can be reached. If not, it will try to reach it by calling
// it and doing simple translate operation of word 'cloud'.
if ( empty($option_value) ) {
try {
// Perform simple translation of single word.
$translated_text_part = $translate_client->translateText(
array(
'SourceLanguageCode' => 'en',
'TargetLanguageCode' => 'es',
'Text' => 'cloud',
)
);
// If we reached this place, it means that translate service is reachable
update_option( 'amazon_polly_trans_validated', 'ok' );
$accessible = true;
} catch ( Exception $e ) {
// If Amazon Translate service is not reachable Error will be thrown.
update_option( 'amazon_polly_trans_validated', '' );
$accessible = false;
}
} else {
$accessible = true;
}
if ( !$accessible ) {
update_option( 'amazon_polly_trans_enabled', '' );
update_option( 'amazon_polly_trans_validated', '' );
throw new TranslateAccessException('Cant perform Translate operation');
}
return $accessible;
}
public function translate_post( $common, $translate_client, $source_text, $source_language, $target_language) {
$translated_text = '';
$paragraphs = explode("\n", $source_text);
foreach($paragraphs as $paragraph) {
$is_image_paragraph = '';
preg_match("/^\s*<img.*?src=.*?\>\s*$/", $paragraph, $is_image_paragraph);
if (empty($is_image_paragraph)) {
//$is_strong_paragraph = '';
//preg_match("/^\s*<strong>.*?strong>\s*$/", $paragraph, $is_strong_paragraph);
$clean_paragraph = $common->clean_paragraph($paragraph);
$translated_paragraph = $this->translate( $translate_client, $clean_paragraph, $source_language, $target_language);
//if (!empty($is_strong_paragraph)) {
// $translated_paragraph = "<strong>" . $translated_paragraph . "</strong>";
///}
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<strong>', '</strong>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<p><strong>', '</strong></p>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<h1>', '</h1>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<h2>', '</h2>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<h3>', '</h3>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<h4>', '</h4>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<h5>', '</h5>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<h6>', '</h6>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<p><em>', '</p></em>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<em>', '</em>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<p class="has-small-font-size">', '</p>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<p class="has-large-font-size">', '</p>');
$translated_paragraph = $this->special_html_paragraph($common, $paragraph, $translated_paragraph, '<p class="has-huge-font-size">', '</p>');
} else {
$translated_paragraph = $paragraph;
}
$translated_text = $translated_text . "\n" . "<p>" . $translated_paragraph . "</p>";
}
return $translated_text;
}
private function special_html_paragraph($common, $paragraph, $translated_paragraph, $tag_beggining, $tag_ending) {
if ( $common->startsWith($paragraph, $tag_beggining) and $common->endsWith($paragraph, $tag_ending) ) {
$translated_paragraph = $tag_beggining . $translated_paragraph . $tag_ending;
}
return $translated_paragraph;
}
/**
* Method translates sentences using Amazon Translate service.
*
* @param string $translate_client Amazon Translate client reference.
* @param string $source_text Source text which should be translated.
* @param string $source_language Source Language
* @param string $target_language Target Language.
* @since 1.0.0
*/
public function translate( $translate_client, $source_text, $source_language, $target_language) {
$logger = new AmazonAI_Logger();
$logger->log(sprintf('%s Traslating', __METHOD__));
// Translate functionality doesn't support SSML, ONLYAUDIO, ONLYWORDS tags
$source_text = preg_replace( '/(\*\*AMAZONPOLLY\*SSML\*BREAK\*)(.*?)(\*\*\*)(.*?)(\*\*\*SSML\*\*)/', '', $source_text );
$source_text = str_replace( '-AMAZONPOLLY-ONLYAUDIO-START-', '', $source_text );
$source_text = str_replace( '-AMAZONPOLLY-ONLYAUDIO-END-', '', $source_text );
$source_text = str_replace( '-AMAZONPOLLY-ONLYWORDS-START-', '', $source_text );
$source_text = str_replace( '-AMAZONPOLLY-ONLYWORDS-END-', '', $source_text );
// Because of limits of Amazon Translate service, we need to break original text info
// smaller parts, which will be then send to the servicec and translation will be perfomed.
$parts = $this->break_for_translate( $source_text );
$translated_text = '';
$not_first = false;
foreach ( $parts as $part ) {
// Between each call to Service we will sleep for 10 seconds. This allows
// us to not be throttled.
if ( $not_first ) {
sleep( 10 );
}
// Performing actual translation.
$translated_text_part = $translate_client->translateText(
array(
'SourceLanguageCode' => $source_language,
'TargetLanguageCode' => $target_language,
'Text' => $part,
)
)['TranslatedText'];
// We join all translated parts.
$translated_text = $translated_text . ' ' . $translated_text_part;
}
$logger->log(sprintf('%s Translated text:', __METHOD__));
$logger->log(sprintf('%s', $translated_text));
return $translated_text;
}
/**
* Method breaks text into multiple smaller parts.
*
* @param string $text Text which should be broken.
* @since 2.0.0
*/
private function break_for_translate( $text ) {
$text = str_replace( '-AMAZONPOLLY-ONLYAUDIO-START-', '', $text );
$text = str_replace( '-AMAZONPOLLY-ONLYAUDIO-END-', '', $text );
$text = preg_replace( '/-AMAZONPOLLY-ONLYWORDS-START-[\S\s]*?-AMAZONPOLLY-ONLYWORDS-END-/', '', $text );
$parts = [];
$part_id = 0;
$text_size = strlen( trim( $text ) );
if ( $text_size > 0 ) {
if ( $text_size <= 4500 ) {
$parts[ $part_id ] = $text;
$part_id++;
} else {
$words = explode( ' ', $text );
$current_part = '';
$last_part = '';
foreach ( $words as $word ) {
$word_length = strlen( $word );
$current_part_length = strlen( $current_part );
if ( $word_length + $current_part_length < 4200 ) {
$current_part = $current_part . $word . ' ';
$last_part = $current_part;
} else {
$current_part = $current_part . $word . ' ';
$parts[ $part_id ] = $current_part;
$part_id++;
$current_part = '';
$last_part = '';
}
}
$parts[ $part_id ] = $last_part;
$part_id++;
}
}
return $parts;
}
/**
* Method will be called by user when clicking Translate button on GUI.
*
* @since 2.0.0
*/
public function ajax_translate() {
check_ajax_referer( 'pollyajaxnonce', 'nonce' );
$common = $this->common;
$polly = new AmazonAI_PollyService($common);
$logger = new AmazonAI_Logger();
$logger->log(sprintf('%s Ajax Translate', __METHOD__));
$post_id = $_POST['post_id'];
$phase = $_POST['phase'];
$langs = $_POST['langs'];
$logger->log(sprintf('%s Phase ( %s )', __METHOD__, $phase));
$step = '';
$percentage = 0;
$message = '';
$all_langs = [];
$index = 0;
$source_language = $common->get_source_language();
$translate_client = $common->get_translate_client();
if ( empty( $source_language ) ) {
$message = 'Amazon Translate functionality needs to be enabled before publishing the post';
$step = 'done';
$percentage = 100;
$logger->log(sprintf('%s Transalte functionality is not enabled )', __METHOD__));
} else {
foreach ( $common->get_all_translatable_languages() as $supported_lan ) {
if ( $common->is_language_translatable( $supported_lan ) and ( $supported_lan != $source_language ) ) {
if ($common->if_translatable_enabled_for_language($supported_lan)) {
$all_langs[ $index ] = $supported_lan;
$index++;
}
}
}
if ( 'start' == $phase ) {
$langs = $all_langs;
update_post_meta( $post_id, 'amazon_ai_source_language', $source_language );
} else {
$logger->log(sprintf('%s Languages ( %s )', __METHOD__, implode(" ", $langs)));
# Check what language
$language_code = array_shift( $langs );
#Retrieve original text
$content = get_post_field('post_content', $post_id);
$clean_text = $common->clean_text( $post_id, false, false );
$logger->log(sprintf('%s Translating from ( %s ) to ( %s )', __METHOD__, $source_language, $language_code));
$wp_filesystem = $common->prepare_wp_filesystem();
if ( $common->is_language_translatable( $language_code ) and ( $language_code != $source_language ) ) {
try {
$clean_title = $common->clean_text( $post_id, false, true );
$translated_title = $this->translate( $translate_client, $clean_title, $source_language, $language_code);
$translated_text = $this->translate_post( $common, $translate_client, $content, $source_language, $language_code);
update_post_meta( $post_id, 'amazon_polly_transcript_' . $language_code, $translated_text );
update_post_meta( $post_id, 'amazon_polly_transcript_title_' . $language_code, $translated_title );
$sentences = $common->break_text( $translated_text );
// Create audio files for files only if this functionality is enabled.
if ( $common->is_audio_for_translations_enabled() ) {
$logger->log(sprintf('%s Starting preparing audio version', __METHOD__));
$polly->convert_to_audio( $post_id, '', '', $sentences, $wp_filesystem, $language_code );
}
} catch(Exception $e) {
error_log($e);
}
}
$percentage = 100 - ( count( $langs ) / $index ) * 100;
}//end if
if ( empty( $langs ) ) {
$step = 'done';
$message = 'Translation completed!';
}
}//end if
$temp_langs = $langs;
$next_lang = array_shift( $temp_langs );
if ( ! empty( $next_lang ) ) {
$logger->log(sprintf('%s Next language ( %s ))', __METHOD__, $next_lang));
$message = 'Translating from ' . $common->get_language_name( $source_language ) . ' to ' . $common->get_language_name( $next_lang );
} else {
$message = 'Translation completed!';
}
if ( empty( $source_language ) ) {
$message = 'Amazon Translate functionality needs to be enabled before publishing the post';
}
echo wp_json_encode(
array(
'step' => $step,
'langs' => $langs,
'percentage' => $percentage,
'message' => $message,
)
);
wp_die();
}
}
ob_start();
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