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system/Commands/Translation/LocalizationSync.php

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+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Commands\Translation;
+
+use CodeIgniter\CLI\BaseCommand;
+use CodeIgniter\CLI\CLI;
+use CodeIgniter\Exceptions\LogicException;
+use Config\App;
+use ErrorException;
+use FilesystemIterator;
+use Locale;
+use RecursiveDirectoryIterator;
+use RecursiveIteratorIterator;
+use SplFileInfo;
+
+/**
+ * @see \CodeIgniter\Commands\Translation\LocalizationSyncTest
+ */
+class LocalizationSync extends BaseCommand
+{
+    protected $group       = 'Translation';
+    protected $name        = 'lang:sync';
+    protected $description = 'Synchronize translation files from one language to another.';
+    protected $usage       = 'lang:sync [options]';
+    protected $arguments   = [];
+    protected $options     = [
+        '--locale' => 'The original locale (en, ru, etc.).',
+        '--target' => 'Target locale (en, ru, etc.).',
+    ];
+    private string $languagePath;
+
+    public function run(array $params)
+    {
+        $optionTargetLocale = '';
+        $optionLocale       = $params['locale'] ?? Locale::getDefault();
+        $this->languagePath = APPPATH . 'Language';
+
+        if (isset($params['target']) && $params['target'] !== '') {
+            $optionTargetLocale = $params['target'];
+        }
+
+        if (! in_array($optionLocale, config(App::class)->supportedLocales, true)) {
+            CLI::error(
+                'Error: "' . $optionLocale . '" is not supported. Supported locales: '
+                . implode(', ', config(App::class)->supportedLocales),
+            );
+
+            return EXIT_USER_INPUT;
+        }
+
+        if ($optionTargetLocale === '') {
+            CLI::error(
+                'Error: "--target" is not configured. Supported locales: '
+                . implode(', ', config(App::class)->supportedLocales),
+            );
+
+            return EXIT_USER_INPUT;
+        }
+
+        if (! in_array($optionTargetLocale, config(App::class)->supportedLocales, true)) {
+            CLI::error(
+                'Error: "' . $optionTargetLocale . '" is not supported. Supported locales: '
+                . implode(', ', config(App::class)->supportedLocales),
+            );
+
+            return EXIT_USER_INPUT;
+        }
+
+        if ($optionTargetLocale === $optionLocale) {
+            CLI::error(
+                'Error: You cannot have the same values for "--target" and "--locale".',
+            );
+
+            return EXIT_USER_INPUT;
+        }
+
+        if (ENVIRONMENT === 'testing') {
+            $this->languagePath = SUPPORTPATH . 'Language';
+        }
+
+        if ($this->process($optionLocale, $optionTargetLocale) === EXIT_ERROR) {
+            return EXIT_ERROR;
+        }
+
+        CLI::write('All operations done!');
+
+        return EXIT_SUCCESS;
+    }
+
+    private function process(string $originalLocale, string $targetLocale): int
+    {
+        $originalLocaleDir = $this->languagePath . DIRECTORY_SEPARATOR . $originalLocale;
+        $targetLocaleDir   = $this->languagePath . DIRECTORY_SEPARATOR . $targetLocale;
+
+        if (! is_dir($originalLocaleDir)) {
+            CLI::error(
+                'Error: The "' . clean_path($originalLocaleDir) . '" directory was not found.',
+            );
+
+            return EXIT_ERROR;
+        }
+
+        // Unifying the error - mkdir() may cause an exception.
+        try {
+            if (! is_dir($targetLocaleDir) && ! mkdir($targetLocaleDir, 0775)) {
+                throw new ErrorException();
+            }
+        } catch (ErrorException $e) {
+            CLI::error(
+                'Error: The target directory "' . clean_path($targetLocaleDir) . '" cannot be accessed.',
+            );
+
+            return EXIT_ERROR;
+        }
+
+        $iterator = new RecursiveIteratorIterator(
+            new RecursiveDirectoryIterator(
+                $originalLocaleDir,
+                FilesystemIterator::KEY_AS_PATHNAME | FilesystemIterator::CURRENT_AS_FILEINFO | FilesystemIterator::SKIP_DOTS,
+            ),
+        );
+
+        /**
+         * @var array<non-empty-string, SplFileInfo> $files
+         */
+        $files = iterator_to_array($iterator, true);
+        ksort($files);
+
+        foreach ($files as $originalLanguageFile) {
+            if ($originalLanguageFile->getExtension() !== 'php') {
+                continue;
+            }
+
+            $targetLanguageFile = $targetLocaleDir . DIRECTORY_SEPARATOR . $originalLanguageFile->getFilename();
+
+            $targetLanguageKeys   = [];
+            $originalLanguageKeys = include $originalLanguageFile;
+
+            if (is_file($targetLanguageFile)) {
+                $targetLanguageKeys = include $targetLanguageFile;
+            }
+
+            $targetLanguageKeys = $this->mergeLanguageKeys($originalLanguageKeys, $targetLanguageKeys, $originalLanguageFile->getBasename('.php'));
+
+            $content = "<?php\n\nreturn " . var_export($targetLanguageKeys, true) . ";\n";
+            file_put_contents($targetLanguageFile, $content);
+        }
+
+        return EXIT_SUCCESS;
+    }
+
+    /**
+     * @param array<string, array<string,mixed>|string|null> $originalLanguageKeys
+     * @param array<string, array<string,mixed>|string|null> $targetLanguageKeys
+     *
+     * @return array<string, array<string,mixed>|string|null>
+     */
+    private function mergeLanguageKeys(array $originalLanguageKeys, array $targetLanguageKeys, string $prefix = ''): array
+    {
+        $mergedLanguageKeys = [];
+
+        foreach ($originalLanguageKeys as $key => $value) {
+            $placeholderValue = $prefix !== '' ? $prefix . '.' . $key : $key;
+
+            if (is_string($value)) {
+                // Keep the old value
+                // TODO: The value type may not match the original one
+                if (array_key_exists($key, $targetLanguageKeys)) {
+                    $mergedLanguageKeys[$key] = $targetLanguageKeys[$key];
+
+                    continue;
+                }
+
+                // Set new key with placeholder
+                $mergedLanguageKeys[$key] = $placeholderValue;
+            } elseif (is_array($value)) {
+                if (! array_key_exists($key, $targetLanguageKeys)) {
+                    $mergedLanguageKeys[$key] = $this->mergeLanguageKeys($value, [], $placeholderValue);
+
+                    continue;
+                }
+
+                $mergedLanguageKeys[$key] = $this->mergeLanguageKeys($value, $targetLanguageKeys[$key], $placeholderValue);
+            } else {
+                throw new LogicException('Value for the key "' . $placeholderValue . '" is of the wrong type. Only "array" or "string" is allowed.');
+            }
+        }
+
+        return $mergedLanguageKeys;
+    }
+}