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<?php
declare(strict_types=1);
require_once __DIR__ . '/I18nValue.php';
class I18nFile {
/**
* @param array<mixed,mixed> $array
* @phpstan-assert-if-true array<string,string|array<string,mixed>> $array
*/
public static function is_array_recursive_string(array $array): bool {
foreach ($array as $key => $value) {
if (!is_string($key)) {
return false;
}
if (!is_string($value) && !(is_array($value) && self::is_array_recursive_string($value))) {
return false;
}
}
return true;
}
/**
* @return array<string,array<string,array<string,I18nValue>>>
*/
public function load(): array {
$i18n = [];
$dirs = new DirectoryIterator(I18N_PATH);
foreach ($dirs as $dir) {
if ($dir->isDot()) {
continue;
}
$files = new DirectoryIterator($dir->getPathname());
foreach ($files as $file) {
if (!$file->isFile()) {
continue;
}
$i18n[$dir->getFilename()][$file->getFilename()] = $this->flatten($this->process($file->getPathname()), $file->getBasename('.php'));
}
}
return $i18n;
}
/**
* @param array<string,array<string,array<string,I18nValue>>> $i18n
*/
public function dump(array $i18n): void {
foreach ($i18n as $language => $file) {
$dir = I18N_PATH . DIRECTORY_SEPARATOR . $language;
if (!file_exists($dir)) {
mkdir($dir, 0770, true);
}
foreach ($file as $name => $content) {
$filename = $dir . DIRECTORY_SEPARATOR . $name;
file_put_contents($filename, $this->format($content));
}
}
}
/**
* Process the content of an i18n file
* @return array<string,string|array<string,mixed>>
*/
private function process(string $filename): array {
$fileContent = file_get_contents($filename) ?: [];
$content = str_replace('<?php', '', $fileContent);
$content = preg_replace([
"#',\s*//\s*TODO.*#i",
"#',\s*//\s*DIRTY.*#i",
"#',\s*//\s*IGNORE.*#i",
], [
' -> todo\',',
' -> dirty\',',
' -> ignore\',',
], $content);
try {
$content = eval($content);
} catch (ParseError $ex) {
if (defined('STDERR')) {
fwrite(STDERR, "Error while processing: $filename\n");
fwrite(STDERR, $ex->getMessage());
}
die(1);
}
if (is_array($content) && self::is_array_recursive_string($content)) {
return $content;
}
return [];
}
/**
* Flatten an array of translation
*
* @param array<string,I18nValue|string|array<string,I18nValue>|mixed> $translation
* @return array<string,I18nValue>
*/
private function flatten(array $translation, string $prefix = ''): array {
$a = [];
if ('' !== $prefix) {
$prefix .= '.';
}
foreach ($translation as $key => $value) {
if (is_array($value) && is_array_keys_string($value)) {
$a += $this->flatten($value, $prefix . $key);
} elseif (is_string($value) || $value instanceof I18nValue) {
$a[$prefix . $key] = new I18nValue($value);
}
}
return $a;
}
/**
* Unflatten an array of translation
*
* The first key is dropped since it represents the filename and we have
* no use of it.
*
* @param array<string,I18nValue> $translation
* @return array<string,array<string,I18nValue>>
*/
private function unflatten(array $translation): array {
$a = [];
ksort($translation, SORT_NATURAL);
foreach ($translation as $compoundKey => $value) {
$keys = explode('.', $compoundKey);
array_shift($keys);
eval("\$a['" . implode("']['", $keys) . "'] = '" . addcslashes($value->__toString(), "'") . "';");
}
return $a;
}
/**
* Format an array of translation
*
* It takes an array of translation and format it to be dumped in a
* translation file. The array is first converted to a string then some
* formatting regexes are applied to match the original content.
*
* @param array<string,I18nValue> $translation
*/
private function format(array $translation): string {
$translation = var_export($this->unflatten($translation), true);
$patterns = [
'/ -> todo\',/',
'/ -> dirty\',/',
'/ -> ignore\',/',
'/array \(/',
'/=>\s*array/',
'/(\w) {2}/',
'/ {2}/',
];
$replacements = [
"',\t// TODO", // Double quoting is mandatory to have a tab instead of the \t string
"',\t// DIRTY", // Double quoting is mandatory to have a tab instead of the \t string
"',\t// IGNORE", // Double quoting is mandatory to have a tab instead of the \t string
'array(',
'=> array',
'$1 ',
"\t", // Double quoting is mandatory to have a tab instead of the \t string
];
$translation = preg_replace($patterns, $replacements, $translation);
return <<<OUTPUT
<?php
/******************************************************************************/
/* Each entry of that file can be associated with a comment to indicate its */
/* state. When there is no comment, it means the entry is fully translated. */
/* The recognized comments are (comment matching is case-insensitive): */
/* + TODO: the entry has never been translated. */
/* + DIRTY: the entry has been translated but needs to be updated. */
/* + IGNORE: the entry does not need to be translated. */
/* When a comment is not recognized, it is discarded. */
/******************************************************************************/
return {$translation};
OUTPUT;
}
}
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