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vendor/symfony/translation/Dumper/PoFileDumper.php

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+<?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\Dumper;
+
+use Symfony\Component\Translation\MessageCatalogue;
+
+/**
+ * PoFileDumper generates a gettext formatted string representation of a message catalogue.
+ *
+ * @author Stealth35
+ */
+class PoFileDumper extends FileDumper
+{
+    public function formatCatalogue(MessageCatalogue $messages, string $domain, array $options = []): string
+    {
+        $output = 'msgid ""'."\n";
+        $output .= 'msgstr ""'."\n";
+        $output .= '"Content-Type: text/plain; charset=UTF-8\n"'."\n";
+        $output .= '"Content-Transfer-Encoding: 8bit\n"'."\n";
+        $output .= '"Language: '.$messages->getLocale().'\n"'."\n";
+        $output .= "\n";
+
+        $newLine = false;
+        foreach ($messages->all($domain) as $source => $target) {
+            if ($newLine) {
+                $output .= "\n";
+            } else {
+                $newLine = true;
+            }
+            $metadata = $messages->getMetadata($source, $domain);
+
+            if (isset($metadata['comments'])) {
+                $output .= $this->formatComments($metadata['comments']);
+            }
+            if (isset($metadata['flags'])) {
+                $output .= $this->formatComments(implode(',', (array) $metadata['flags']), ',');
+            }
+            if (isset($metadata['sources'])) {
+                $output .= $this->formatComments(implode(' ', (array) $metadata['sources']), ':');
+            }
+
+            $sourceRules = $this->getStandardRules($source);
+            $targetRules = $this->getStandardRules($target);
+            if (2 == \count($sourceRules) && [] !== $targetRules) {
+                $output .= sprintf('msgid "%s"'."\n", $this->escape($sourceRules[0]));
+                $output .= sprintf('msgid_plural "%s"'."\n", $this->escape($sourceRules[1]));
+                foreach ($targetRules as $i => $targetRule) {
+                    $output .= sprintf('msgstr[%d] "%s"'."\n", $i, $this->escape($targetRule));
+                }
+            } else {
+                $output .= sprintf('msgid "%s"'."\n", $this->escape($source));
+                $output .= sprintf('msgstr "%s"'."\n", $this->escape($target));
+            }
+        }
+
+        return $output;
+    }
+
+    private function getStandardRules(string $id): array
+    {
+        // Partly copied from TranslatorTrait::trans.
+        $parts = [];
+        if (preg_match('/^\|++$/', $id)) {
+            $parts = explode('|', $id);
+        } elseif (preg_match_all('/(?:\|\||[^\|])++/', $id, $matches)) {
+            $parts = $matches[0];
+        }
+
+        $intervalRegexp = <<<'EOF'
+/^(?P<interval>
+    ({\s*
+        (\-?\d+(\.\d+)?[\s*,\s*\-?\d+(\.\d+)?]*)
+    \s*})
+
+        |
+
+    (?P<left_delimiter>[\[\]])
+        \s*
+        (?P<left>-Inf|\-?\d+(\.\d+)?)
+        \s*,\s*
+        (?P<right>\+?Inf|\-?\d+(\.\d+)?)
+        \s*
+    (?P<right_delimiter>[\[\]])
+)\s*(?P<message>.*?)$/xs
+EOF;
+
+        $standardRules = [];
+        foreach ($parts as $part) {
+            $part = trim(str_replace('||', '|', $part));
+
+            if (preg_match($intervalRegexp, $part)) {
+                // Explicit rule is not a standard rule.
+                return [];
+            } else {
+                $standardRules[] = $part;
+            }
+        }
+
+        return $standardRules;
+    }
+
+    protected function getExtension(): string
+    {
+        return 'po';
+    }
+
+    private function escape(string $str): string
+    {
+        return addcslashes($str, "\0..\37\42\134");
+    }
+
+    private function formatComments(string|array $comments, string $prefix = ''): ?string
+    {
+        $output = null;
+
+        foreach ((array) $comments as $comment) {
+            $output .= sprintf('#%s %s'."\n", $prefix, $comment);
+        }
+
+        return $output;
+    }
+}