376 lines
10 KiB
PHP
376 lines
10 KiB
PHP
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<?php namespace ProcessWire;
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/**
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* ProcessWire Language Parser
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*
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* Parses a PHP file to locate all function calls containing translatable text and their optional comments.
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*
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* Return the results by calling $parser->getUntranslated() and $parser->getComments();
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*
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* ProcessWire 3.x, Copyright 2020 by Ryan Cramer
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* https://processwire.com
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*
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*
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*/
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class LanguageParser extends Wire {
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/**
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* Instance of LanguageTranslator
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*
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*/
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protected $translator;
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/**
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* Textdomain for $file provided to this instance
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*
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*/
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protected $textdomain = '';
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/**
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* Array of found comments, indexed by hash of text they go with
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*
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*/
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protected $comments = array();
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/**
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* Array of found phrases (in English) indexed by hash
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*
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*/
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protected $untranslated = array();
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/**
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* Array of phrase alternates, indexed by source phrase
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*
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* @var array
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*
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*/
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protected $alternates = array();
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/**
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* Total number of phrases found
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*
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*/
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protected $numFound = 0;
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/**
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* Construct the Language Parser
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*
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* @param LanguageTranslator $translator
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* @param string $file PHP filename to parse
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*
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*/
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public function __construct(LanguageTranslator $translator, $file) {
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$this->translator = $translator;
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$this->textdomain = $this->translator->filenameToTextdomain($file);
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$this->translator->loadTextdomain($this->textdomain);
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$this->execute($file);
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}
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/**
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* Get phrase alternates
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*
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* @param string $hash Specify phrase hash to get alternates or omit to get all alternates
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* @return array
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*
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*/
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public function getAlternates($hash = '') {
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if(empty($hash)) return $this->alternates;
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return isset($this->alternates[$hash]) ? $this->alternates[$hash] : array();
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}
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/**
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* Return all found comments, indexed by hash
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*
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* @return array
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*
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*/
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public function getComments() { return $this->comments; }
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/**
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* Return all found phrases (in untranslated form), indexed by hash
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*
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* @return array
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*
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*/
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public function getUntranslated() { return $this->untranslated; }
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/**
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* Return number of phrases found total
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*
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* @return int
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*
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*/
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public function getNumFound() { return $this->numFound; }
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/**
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* Given a hash, return the untranslated text associated with it
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*
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* @param string $hash
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* @return string|bool Returns untranslated text (string) on success or boolean false if not available
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*
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*/
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public function getTextFromHash($hash) {
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return isset($this->untranslated[$hash]) ? $this->untranslated[$hash] : false;
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}
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/**
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* Begin parsing given file
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*
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* @param string $file
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*
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*/
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protected function execute($file) {
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$matches = $this->parseFile($file);
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foreach($matches as $m) {
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// $m[3] is always the text
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if(empty($m)) continue;
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foreach($m[3] as $key => $text) {
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$match = $this->buildMatch($m, $key, $text);
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$this->processMatch($match);
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if($match['plural']) {
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$match['text'] = $match['plural'];
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$this->processMatch($match);
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}
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}
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}
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}
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/**
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* Find text array values and place in alternates
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*
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* This method also converts the __(['a','b','c']) array calls to single value calls like __('a')
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* as a pre-parser for all parsers that follow it, so they do not need to be * aware of array values
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* for translation calls.
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*
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* @param string $data
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*
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*/
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protected function findArrayTranslations(&$data) {
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if(!strpos($data, '_([')) return;
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$regex =
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'/((?:->_|\b__|\b_n|\b_x)\(\[\s*)' . // "->_([" or "__([" or "_n([" or "_x(["
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'([\'"])(.+?)(?<!\\\\)\\2' . // 'text1'
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'([^\]]*?\])\s*' . // , 'text2', 'text3' ]"
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'([^)]*\))/m'; // and the remainder of the function call
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$funcTypes = array('->_(' => '>', '__(' => '_', '_n(' => 'n', '_x(' => 'x');
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if(!preg_match_all($regex, $data, $m)) return;
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foreach($m[0] as $key => $find) {
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$func = trim(str_replace('[', '', $m[1][$key])); // "->_([" or "__([" or "_n([" or "_x(["
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$funcType = isset($funcTypes[$func]) ? $funcTypes[$func] : '_';
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$quote = $m[2][$key]; // single quote or double quote ['"]
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$text1 = $m[3][$key]; // first text in array
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$textArrayStr = trim($m[4][$key], ' ,[]'); // the other text phrases in the array (CSV and quoted)
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$theRest = $m[5][$key]; // remainder of function call, i.e. ", __FILE__)" or ", 'context-str'"
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$context = '';
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$trimRest = ltrim($theRest, ', ');
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if($funcType === 'x' && (strpos($trimRest, '"') === 0 || strpos($trimRest, "'") === 0)) {
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if(preg_match('/^([\'"])(.+?)(?<!\\\\)\\1/', $trimRest, $matches)) {
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$context = $matches[2];
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}
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}
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// Convert from: "__(['a', 'b', 'c'])" to "__('a')" and remember 'b' and 'c' alternates
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$replace = $func . $quote . $text1 . $quote . $theRest;
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$data = str_replace($find, $replace, $data);
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$text1 = $this->unescapeText($text1);
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// Given string "'b', 'c'" convert to array and place in alternates
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if(preg_match_all('/(^|,\s*)([\'"])(.+?)(?<!\\\\)\\2/', $textArrayStr, $matches)) {
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$hash1 = $this->getTextHash($text1, $context);
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if(!isset($this->alternates[$hash1])) $this->alternates[$hash1] = array();
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foreach($matches[3] as $text) {
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$text2 = $this->unescapeText($text);
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$hash2 = $this->getTextHash($text, $context);
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$this->alternates[$hash1][$hash2] = $text2;
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}
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}
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}
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}
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/**
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* Run regexes on file contents to locate all translation functions
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*
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* @param string $file
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* @return array
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*
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*/
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protected function parseFile($file) {
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$matches = array(
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1 => array(), // $this->_('text');
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2 => array(), // __('text', [textdomain]);
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3 => array(), // _x('text', 'context', [textdomain]) or $this->_x('text', 'context');
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4 => array(), // _n('singular', 'plural', $cnt, [textdomain]) or $this->_n(...);
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);
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if(!is_file($file)) return $matches;
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$data = file_get_contents($file);
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$this->findArrayTranslations($data);
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// Find $this->_('text') style matches
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preg_match_all(
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'/(>_)\(\s*' . // $this->_(
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'([\'"])(.+?)(?<!\\\\)\\2' . // "text"
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'\s*\)+(.*)$/m', // and everything else
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$data, $matches[1]
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);
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// Find __('text', textdomain) style matches
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preg_match_all(
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'/([\s.=(\\\\]__|^__)\(\s*' . // __(
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'([\'"])(.+?)(?<!\\\\)\\2\s*' . // "text"
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'(?:,\s*[^)]+)?\)+(.*)$/m', // , textdomain (optional) and everything else
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$data, $matches[2]
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);
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// Find _x('text', 'context', textdomain) or $this->_x('text', 'context') style matches
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preg_match_all(
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'/([\s.=>(\\\\]_x|^_x)\(\s*' . // _x( or $this->_x(
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'([\'"])(.+?)(?<!\\\\)\\2\s*,\s*' . // "text",
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'([\'"])(.+?)(?<!\\\\)\\4\s*' . // "context"
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'[^)]*\)+(.*)$/m', // , textdomain (optional) and everything else
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$data, $matches[3]
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);
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// Find _n('singular text', 'plural text', $cnt, textdomain) or $this->_n(...) style matches
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preg_match_all(
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'/([\s.=>(\\\\]_n|^_n)\(\s*' . // _n( or $this->_n(
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'([\'"])(.+?)(?<!\\\\)\\2\s*,\s*' . // "singular",
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'([\'"])(.+?)(?<!\\\\)\\4\s*,\s*' . // "plural",
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'.+?\)+(.*)$/m', // $count, optional textdomain, closing function parenthesis ) and rest of line
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$data, $matches[4]
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);
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return $matches;
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}
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/**
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* Build the match abstracted away from the preg_match result
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*
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* @param array $m
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* @param int $key
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* @param string $text
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* @return array
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*
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*/
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protected function buildMatch(array $m, $key, $text) {
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// $match is where we store the results generated by this function
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$match = array('text' => $text, 'context' => '', 'plural' => '', 'tail' => '');
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// determine the function type
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$funcType = substr($m[1][$key], 0, 1); // '>' OR '_' , for '$this->_()' OR '__()'
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$funcType2 = substr($m[1][$key], -1); // 'x' OR 'n' OR '_'
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if($funcType2 == 'x' || $funcType2 == 'n') $funcType = $funcType2;
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// tail, plural and context vary in position according to function type
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if($funcType == 'x') {
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// context function _x()
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$match['tail'] = $m[6][$key];
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$match['context'] = $m[5][$key];
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} else if($funcType == 'n') {
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// plural function _n()
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$match['tail'] = $m[6][$key];
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$match['plural'] = $m[5][$key];
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} else {
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// tail containing optional label comment
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$match['tail'] = $m[4][$key];
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}
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return $match;
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}
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/**
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* Process the match and populate $this->untranslated and $this->comments
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*
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* @param array $match
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*
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*/
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protected function processMatch(array $match) {
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$text = $this->unescapeText($match['text']);
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$tail = $match['tail'];
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$context = $match['context'];
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$plural = $match['plural'];
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$comments = '';
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// get the translation for $text in $context
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$translation = $this->translator->getTranslation($this->textdomain, $text, $context);
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// if translation == $text then that means no translation was found, make $translation blank
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if($translation == $text) $translation = '';
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// set a pending translation to get the hash
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$hash = $this->translator->setTranslation($this->textdomain, $text, $translation, $context);
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if(!$hash) return;
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// store the untranslated (English) version of $hash
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$this->untranslated[$hash] = $text;
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$this->numFound++;
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// check if there are comments in the $tail and record them if so
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if(($pos = strpos($tail, '//')) !== false) {
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if(preg_match('![^:"\']//(.+)$!', $tail, $matches)) {
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$comments = $matches[1];
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}
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}
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// check if a plural was found and set an automatic comment to indicate which is which
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if($plural) {
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$note = $plural == $text ? "Plural" : "Singular";
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// force note saying Plural or Singular
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$comments = ($comments ? $comments : $text) . " // $note Version";
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} else if($context) {
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$comments = ($comments ? $comments : $text) . " // Context: $context";
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}
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// save the comments indexed to the hash
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if($comments) $this->comments[$hash] = $comments;
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}
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/**
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* Replace any escaped characters with non-escaped versions
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*
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* @param string $text
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* @return string
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*
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*/
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protected function unescapeText($text) {
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if(strpos($text, '\\') !== false) {
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$text = str_replace(array('\\"', '\\\'', '\\$', '\\'), array('"', "'", '$', '\\'), $text);
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}
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return $text;
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}
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/**
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* Get hash for given text + context
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*
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* @param string $text
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* @param string $context
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* @return string
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*
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*/
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protected function getTextHash($text, $context) {
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$translation = $this->translator->getTranslation($this->textdomain, $text, $context); // get the translation for $text in $context
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if($translation == $text) $translation = ''; // if translation == $text then that means no translation was found, make $translation blank
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$hash = $this->translator->setTranslation($this->textdomain, $text, $translation, $context);
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if(!$hash) $hash = $text;
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return $hash;
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}
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|
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}
|