|
|
<?php
/* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */
namespace Symfony\Component\Translation;
use Symfony\Contracts\Translation\TranslatorInterface;
/** * This translator should only be used in a development environment. */final class PseudoLocalizationTranslator implements TranslatorInterface{ private const EXPANSION_CHARACTER = '~';
private $translator; private $accents; private $expansionFactor; private $brackets; private $parseHTML; private $localizableHTMLAttributes;
/** * Available options: * * accents: * type: boolean * default: true * description: replace ASCII characters of the translated string with accented versions or similar characters * example: if true, "foo" => "ƒöö". * * * expansion_factor: * type: float * default: 1 * validation: it must be greater than or equal to 1 * description: expand the translated string by the given factor with spaces and tildes * example: if 2, "foo" => "~foo ~" * * * brackets: * type: boolean * default: true * description: wrap the translated string with brackets * example: if true, "foo" => "[foo]" * * * parse_html: * type: boolean * default: false * description: parse the translated string as HTML - looking for HTML tags has a performance impact but allows to preserve them from alterations - it also allows to compute the visible translated string length which is useful to correctly expand ot when it contains HTML * warning: unclosed tags are unsupported, they will be fixed (closed) by the parser - eg, "foo <div>bar" => "foo <div>bar</div>" * * * localizable_html_attributes: * type: string[] * default: [] * description: the list of HTML attributes whose values can be altered - it is only useful when the "parse_html" option is set to true * example: if ["title"], and with the "accents" option set to true, "<a href="#" title="Go to your profile">Profile</a>" => "<a href="#" title="Ĝö ţö ýöûŕ þŕöƒîļé">Þŕöƒîļé</a>" - if "title" was not in the "localizable_html_attributes" list, the title attribute data would be left unchanged.
*/ public function __construct(TranslatorInterface $translator, array $options = []) { $this->translator = $translator; $this->accents = $options['accents'] ?? true;
if (1.0 > ($this->expansionFactor = $options['expansion_factor'] ?? 1.0)) { throw new \InvalidArgumentException('The expansion factor must be greater than or equal to 1.'); }
$this->brackets = $options['brackets'] ?? true;
$this->parseHTML = $options['parse_html'] ?? false; if ($this->parseHTML && !$this->accents && 1.0 === $this->expansionFactor) { $this->parseHTML = false; }
$this->localizableHTMLAttributes = $options['localizable_html_attributes'] ?? []; }
/** * {@inheritdoc} */ public function trans(string $id, array $parameters = [], string $domain = null, string $locale = null) { $trans = ''; $visibleText = '';
foreach ($this->getParts($this->translator->trans($id, $parameters, $domain, $locale)) as [$visible, $localizable, $text]) { if ($visible) { $visibleText .= $text; }
if (!$localizable) { $trans .= $text;
continue; }
$this->addAccents($trans, $text); }
$this->expand($trans, $visibleText);
$this->addBrackets($trans);
return $trans; }
public function getLocale(): string { return $this->translator->getLocale(); }
private function getParts(string $originalTrans): array { if (!$this->parseHTML) { return [[true, true, $originalTrans]]; }
$html = mb_convert_encoding($originalTrans, 'HTML-ENTITIES', mb_detect_encoding($originalTrans, null, true) ?: 'UTF-8');
$useInternalErrors = libxml_use_internal_errors(true);
$dom = new \DOMDocument(); $dom->loadHTML('<trans>'.$html.'</trans>');
libxml_clear_errors(); libxml_use_internal_errors($useInternalErrors);
return $this->parseNode($dom->childNodes->item(1)->childNodes->item(0)->childNodes->item(0)); }
private function parseNode(\DOMNode $node): array { $parts = [];
foreach ($node->childNodes as $childNode) { if (!$childNode instanceof \DOMElement) { $parts[] = [true, true, $childNode->nodeValue];
continue; }
$parts[] = [false, false, '<'.$childNode->tagName];
/** @var \DOMAttr $attribute */ foreach ($childNode->attributes as $attribute) { $parts[] = [false, false, ' '.$attribute->nodeName.'="'];
$localizableAttribute = \in_array($attribute->nodeName, $this->localizableHTMLAttributes, true); foreach (preg_split('/(&(?:amp|quot|#039|lt|gt);+)/', htmlspecialchars($attribute->nodeValue, \ENT_QUOTES, 'UTF-8'), -1, \PREG_SPLIT_DELIM_CAPTURE) as $i => $match) { if ('' === $match) { continue; }
$parts[] = [false, $localizableAttribute && 0 === $i % 2, $match]; }
$parts[] = [false, false, '"']; }
$parts[] = [false, false, '>'];
$parts = array_merge($parts, $this->parseNode($childNode, $parts));
$parts[] = [false, false, '</'.$childNode->tagName.'>']; }
return $parts; }
private function addAccents(string &$trans, string $text): void { $trans .= $this->accents ? strtr($text, [ ' ' => ' ', '!' => '¡', '"' => '″', '#' => '♯', '$' => '€', '%' => '‰', '&' => '⅋', '\'' => '´', '(' => '{', ')' => '}', '*' => '⁎', '+' => '⁺', ',' => '،', '-' => '‐', '.' => '·', '/' => '⁄', '0' => '⓪', '1' => '①', '2' => '②', '3' => '③', '4' => '④', '5' => '⑤', '6' => '⑥', '7' => '⑦', '8' => '⑧', '9' => '⑨', ':' => '∶', ';' => '⁏', '<' => '≤', '=' => '≂', '>' => '≥', '?' => '¿', '@' => '՞', 'A' => 'Å', 'B' => 'Ɓ', 'C' => 'Ç', 'D' => 'Ð', 'E' => 'É', 'F' => 'Ƒ', 'G' => 'Ĝ', 'H' => 'Ĥ', 'I' => 'Î', 'J' => 'Ĵ', 'K' => 'Ķ', 'L' => 'Ļ', 'M' => 'Ṁ', 'N' => 'Ñ', 'O' => 'Ö', 'P' => 'Þ', 'Q' => 'Ǫ', 'R' => 'Ŕ', 'S' => 'Š', 'T' => 'Ţ', 'U' => 'Û', 'V' => 'Ṽ', 'W' => 'Ŵ', 'X' => 'Ẋ', 'Y' => 'Ý', 'Z' => 'Ž', '[' => '⁅', '\\' => '∖', ']' => '⁆', '^' => '˄', '_' => '‿', '`' => '‵', 'a' => 'å', 'b' => 'ƀ', 'c' => 'ç', 'd' => 'ð', 'e' => 'é', 'f' => 'ƒ', 'g' => 'ĝ', 'h' => 'ĥ', 'i' => 'î', 'j' => 'ĵ', 'k' => 'ķ', 'l' => 'ļ', 'm' => 'ɱ', 'n' => 'ñ', 'o' => 'ö', 'p' => 'þ', 'q' => 'ǫ', 'r' => 'ŕ', 's' => 'š', 't' => 'ţ', 'u' => 'û', 'v' => 'ṽ', 'w' => 'ŵ', 'x' => 'ẋ', 'y' => 'ý', 'z' => 'ž', '{' => '(', '|' => '¦', '}' => ')', '~' => '˞', ]) : $text; }
private function expand(string &$trans, string $visibleText): void { if (1.0 >= $this->expansionFactor) { return; }
$visibleLength = $this->strlen($visibleText); $missingLength = (int) (ceil($visibleLength * $this->expansionFactor)) - $visibleLength; if ($this->brackets) { $missingLength -= 2; }
if (0 >= $missingLength) { return; }
$words = []; $wordsCount = 0; foreach (preg_split('/ +/', $visibleText, -1, \PREG_SPLIT_NO_EMPTY) as $word) { $wordLength = $this->strlen($word);
if ($wordLength >= $missingLength) { continue; }
if (!isset($words[$wordLength])) { $words[$wordLength] = 0; }
++$words[$wordLength]; ++$wordsCount; }
if (!$words) { $trans .= 1 === $missingLength ? self::EXPANSION_CHARACTER : ' '.str_repeat(self::EXPANSION_CHARACTER, $missingLength - 1);
return; }
arsort($words, \SORT_NUMERIC);
$longestWordLength = max(array_keys($words));
while (true) { $r = mt_rand(1, $wordsCount);
foreach ($words as $length => $count) { $r -= $count; if ($r <= 0) { break; } }
$trans .= ' '.str_repeat(self::EXPANSION_CHARACTER, $length);
$missingLength -= $length + 1;
if (0 === $missingLength) { return; }
while ($longestWordLength >= $missingLength) { $wordsCount -= $words[$longestWordLength]; unset($words[$longestWordLength]);
if (!$words) { $trans .= 1 === $missingLength ? self::EXPANSION_CHARACTER : ' '.str_repeat(self::EXPANSION_CHARACTER, $missingLength - 1);
return; }
$longestWordLength = max(array_keys($words)); } } }
private function addBrackets(string &$trans): void { if (!$this->brackets) { return; }
$trans = '['.$trans.']'; }
private function strlen(string $s): int { return false === ($encoding = mb_detect_encoding($s, null, true)) ? \strlen($s) : mb_strlen($s, $encoding); }}
|
