BookStack/resources/lang/format.php

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#!/usr/bin/env php
<?php
/**
* Format a language file in the same way as the EN equivalent.
* Matches the line numbers of translated content.
* Potentially destructive, Ensure you have a backup of your translation content before running.
*/
$args = array_slice($argv, 1);
if (count($args) < 2) {
errorOut("Please provide a language code as the first argument and a translation file name, or '--all', as the second (./format.php fr activities)");
}
$lang = formatLocale($args[0]);
$fileName = explode('.', $args[1])[0];
$filesNames = [$fileName];
if ($fileName === '--all') {
$fileNames = getTranslationFileNames();
}
foreach ($fileNames as $fileName) {
$formatted = formatFileContents($lang, $fileName);
writeLangFile($lang, $fileName, $formatted);
}
/**
* Format the contents of a single translation file in the given language.
* @param string $lang
* @param string $fileName
* @return string
*/
function formatFileContents(string $lang, string $fileName) : string {
$enLines = loadLangFileLines('en', $fileName);
$langContent = loadLang($lang, $fileName);
$enContent = loadLang('en', $fileName);
// Calculate the longest top-level key length
$longestKeyLength = calculateKeyPadding($enContent);
// Start formatted content
$formatted = [];
$mode = 'header';
$arrayKeys = [];
foreach($enLines as $index => $line) {
$trimLine = trim($line);
if ($mode === 'header') {
$formatted[$index] = $line;
if (str_replace(' ', '', $trimLine) === 'return[') $mode = 'body';
}
if ($mode === 'body') {
$matches = [];
// Comment
if (strpos($trimLine, '//') === 0) {
$formatted[$index] = "\t" . $trimLine;
continue;
}
// Arrays
$arrayStartMatch = preg_match('/^\'(.*)\'\s+?=>\s+?\[(\],)?\s*?$/', $trimLine, $matches);
$arrayEndMatch = preg_match('/]\s*,\s*$/', $trimLine);
$indent = count($arrayKeys) + 1;
if ($arrayStartMatch === 1) {
$arrayKeys[] = $matches[1];
$formatted[$index] = str_repeat(" ", $indent * 4) . str_pad("'{$matches[1]}'", $longestKeyLength) . "=> [";
if ($arrayEndMatch !== 1) continue;
}
if ($arrayEndMatch === 1) {
unsetArrayByKeys($langContent, $arrayKeys);
array_pop($arrayKeys);
if (isset($formatted[$index])) {
$formatted[$index] .= '],';
} else {
$formatted[$index] = str_repeat(" ", ($indent-1) * 4) . "],";
}
continue;
}
// Translation
$translationMatch = preg_match('/^\'(.*)\'\s+?=>\s+?\'(.*)?\'.+?$/', $trimLine, $matches);
if ($translationMatch === 1) {
$key = $matches[1];
$keys = array_merge($arrayKeys, [$key]);
$langVal = getTranslationByKeys($langContent, $keys);
if (empty($langVal)) continue;
$keyPad = $longestKeyLength;
if (count($arrayKeys) === 0) {
unset($langContent[$key]);
} else {
$keyPad = calculateKeyPadding(getTranslationByKeys($enContent, $arrayKeys));
}
$formatted[$index] = formatTranslationLine($key, $langVal, $indent, $keyPad);
continue;
}
}
}
// Fill missing lines
$arraySize = max(array_keys($formatted));
$formatted = array_replace(array_fill(0, $arraySize, ''), $formatted);
// Add remaining translations
$langContent = array_filter($langContent, function($item) {
return !is_null($item) && !empty($item);
});
if (count($langContent) > 0) {
$formatted[] = '';
$formatted[] = "\t// Unmatched";
}
foreach ($langContent as $key => $value) {
if (is_array($value)) {
$formatted[] = formatTranslationArray($key, $value);
} else {
$formatted[] = formatTranslationLine($key, $value);
}
}
// Add end line
$formatted[] = '];';
return implode("\n", $formatted);
}
/**
* Format a translation line.
* @param string $key
* @param string $value
* @param int $indent
* @param int $keyPad
* @return string
*/
function formatTranslationLine(string $key, string $value, int $indent = 1, int $keyPad = 1) : string {
$escapedValue = str_replace("'", "\\'", $value);
return str_repeat(" ", $indent * 4) . str_pad("'{$key}'", $keyPad, ' ') ."=> '{$escapedValue}',";
}
/**
* Find the longest key in the array and provide the length
* for all keys to be used when printed.
* @param array $array
* @return int
*/
function calculateKeyPadding(array $array) : int {
$top = 0;
foreach ($array as $key => $value) {
$keyLen = strlen($key);
$top = max($top, $keyLen);
}
return $top + 3;
}
/**
* Format an translation array with the given key.
* Simply prints as an old-school php array.
* Used as a last-resort backup to save unused translations.
* @param string $key
* @param array $array
* @return string
*/
function formatTranslationArray(string $key, array $array) : string {
$arrayPHP = var_export($array, true);
return " '{$key}' => {$arrayPHP},";
}
/**
* Find a string translation value within a multi-dimensional array
* by traversing the given array of keys.
* @param array $translations
* @param array $keys
* @return string|array
*/
function getTranslationByKeys(array $translations, array $keys) {
$val = $translations;
foreach ($keys as $key) {
$val = $val[$key] ?? '';
if ($val === '') return '';
}
return $val;
}
/**
* Unset an inner item of a multi-dimensional array by
* traversing the given array of keys.
* @param array $input
* @param array $keys
*/
function unsetArrayByKeys(array &$input, array $keys) {
$val = &$input;
$lastIndex = count($keys) - 1;
foreach ($keys as $index => &$key) {
if ($index === $lastIndex && is_array($val)) {
unset($val[$key]);
}
if (!is_array($val)) return;
$val = &$val[$key] ?? [];
}
}
/**
* Write the given content to a translation file.
* @param string $lang
* @param string $fileName
* @param string $content
*/
function writeLangFile(string $lang, string $fileName, string $content) {
$path = __DIR__ . "/{$lang}/{$fileName}.php";
if (!file_exists($path)) {
errorOut("Expected translation file '{$path}' does not exist");
}
file_put_contents($path, $content);
}
/**
* Load the contents of a language file as an array of text lines.
* @param string $lang
* @param string $fileName
* @return array
*/
function loadLangFileLines(string $lang, string $fileName) : array {
$path = __DIR__ . "/{$lang}/{$fileName}.php";
if (!file_exists($path)) {
errorOut("Expected translation file '{$path}' does not exist");
}
$lines = explode("\n", file_get_contents($path));
return array_map(function($line) {
return trim($line, "\r");
}, $lines);
}
/**
* Load the contents of a language file
* @param string $lang
* @param string $fileName
* @return array
*/
function loadLang(string $lang, string $fileName) : array {
$path = __DIR__ . "/{$lang}/{$fileName}.php";
if (!file_exists($path)) {
errorOut("Expected translation file '{$path}' does not exist");
}
$fileData = include($path);
return $fileData;
}
/**
* Fetch an array containing the names of all translation files without the extension.
* @return array
*/
function getTranslationFileNames() : array {
$dir = __DIR__ . "/en";
if (!file_exists($dir)) {
errorOut("Expected directory '{$dir}' does not exist");
}
$files = scandir($dir);
$fileNames = [];
foreach ($files as $file) {
if (substr($file, -4) === '.php') {
$fileNames[] = substr($file, 0, strlen($file) - 4);
}
}
return $fileNames;
}
/**
* Format a locale to follow the lowercase_UPERCASE standard
* @param string $lang
* @return string
*/
function formatLocale(string $lang) : string {
$langParts = explode('_', strtoupper($lang));
$langParts[0] = strtolower($langParts[0]);
return implode('_', $langParts);
}
/**
* Dump a variable then die.
* @param $content
*/
function dd($content) {
print_r($content);
exit(1);
}
/**
* Log out some information text in blue
* @param $text
*/
function info($text) {
echo "\e[34m" . $text . "\e[0m\n";
}
/**
* Log out an error in red and exit.
* @param $text
*/
function errorOut($text) {
echo "\e[31m" . $text . "\e[0m\n";
exit(1);
}