Subversion-Projekte lars-tiefland.laravel_shop

<?php

namespace Illuminate\Translation;

use Illuminate\Contracts\Translation\Loader;

use Illuminate\Contracts\Translation\Translator as TranslatorContract;

use Illuminate\Support\Arr;

use Illuminate\Support\NamespacedItemResolver;

use Illuminate\Support\Str;

use Illuminate\Support\Traits\Macroable;

use InvalidArgumentException;

class Translator extends NamespacedItemResolver implements TranslatorContract

{

    use Macroable;

    /**

     * The loader implementation.

     *

     * @var \Illuminate\Contracts\Translation\Loader

     */

    protected $loader;

    /**

     * The default locale being used by the translator.

     *

     * @var string

     */

    protected $locale;

    /**

     * The fallback locale used by the translator.

     *

     * @var string

     */

    protected $fallback;

    /**

     * The array of loaded translation groups.

     *

     * @var array

     */

    protected $loaded = [];

    /**

     * The message selector.

     *

     * @var \Illuminate\Translation\MessageSelector

     */

    protected $selector;

    /**

     * The callable that should be invoked to determine applicable locales.

     *

     * @var callable

     */

    protected $determineLocalesUsing;

    /**

     * Create a new translator instance.

     *

     * @param  \Illuminate\Contracts\Translation\Loader  $loader

     * @param  string  $locale

     * @return void

     */

    public function __construct(Loader $loader, $locale)

    {

        $this->loader = $loader;

        $this->setLocale($locale);

    }

    /**

     * Determine if a translation exists for a given locale.

     *

     * @param  string  $key

     * @param  string|null  $locale

     * @return bool

     */

    public function hasForLocale($key, $locale = null)

    {

        return $this->has($key, $locale, false);

    }

    /**

     * Determine if a translation exists.

     *

     * @param  string  $key

     * @param  string|null  $locale

     * @param  bool  $fallback

     * @return bool

     */

    public function has($key, $locale = null, $fallback = true)

    {

        return $this->get($key, [], $locale, $fallback) !== $key;

    }

    /**

     * Get the translation for the given key.

     *

     * @param  string  $key

     * @param  array  $replace

     * @param  string|null  $locale

     * @param  bool  $fallback

     * @return string|array

     */

    public function get($key, array $replace = [], $locale = null, $fallback = true)

    {

        $locale = $locale ?: $this->locale;

        // For JSON translations, there is only one file per locale, so we will simply load

        // that file and then we will be ready to check the array for the key. These are

        // only one level deep so we do not need to do any fancy searching through it.

        $this->load('*', '*', $locale);

        $line = $this->loaded['*']['*'][$locale][$key] ?? null;

        // If we can't find a translation for the JSON key, we will attempt to translate it

        // using the typical translation file. This way developers can always just use a

        // helper such as __ instead of having to pick between trans or __ with views.

        if (! isset($line)) {

            [$namespace, $group, $item] = $this->parseKey($key);

            // Here we will get the locale that should be used for the language line. If one

            // was not passed, we will use the default locales which was given to us when

            // the translator was instantiated. Then, we can load the lines and return.

            $locales = $fallback ? $this->localeArray($locale) : [$locale];

            foreach ($locales as $locale) {

                if (! is_null($line = $this->getLine(

                    $namespace, $group, $locale, $item, $replace

                ))) {

                    return $line;

                }

            }

        }

        // If the line doesn't exist, we will return back the key which was requested as

        // that will be quick to spot in the UI if language keys are wrong or missing

        // from the application's language files. Otherwise we can return the line.

        return $this->makeReplacements($line ?: $key, $replace);

    }

    /**

     * Get a translation according to an integer value.

     *

     * @param  string  $key

     * @param  \Countable|int|array  $number

     * @param  array  $replace

     * @param  string|null  $locale

     * @return string

     */

    public function choice($key, $number, array $replace = [], $locale = null)

    {

        $line = $this->get(

            $key, $replace, $locale = $this->localeForChoice($locale)

        );

        // If the given "number" is actually an array or countable we will simply count the

        // number of elements in an instance. This allows developers to pass an array of

        // items without having to count it on their end first which gives bad syntax.

        if (is_countable($number)) {

            $number = count($number);

        }

        $replace['count'] = $number;

        return $this->makeReplacements(

            $this->getSelector()->choose($line, $number, $locale), $replace

        );

    }

    /**

     * Get the proper locale for a choice operation.

     *

     * @param  string|null  $locale

     * @return string

     */

    protected function localeForChoice($locale)

    {

        return $locale ?: $this->locale ?: $this->fallback;

    }

    /**

     * Retrieve a language line out the loaded array.

     *

     * @param  string  $namespace

     * @param  string  $group

     * @param  string  $locale

     * @param  string  $item

     * @param  array  $replace

     * @return string|array|null

     */

    protected function getLine($namespace, $group, $locale, $item, array $replace)

    {

        $this->load($namespace, $group, $locale);

        $line = Arr::get($this->loaded[$namespace][$group][$locale], $item);

        if (is_string($line)) {

            return $this->makeReplacements($line, $replace);

        } elseif (is_array($line) && count($line) > 0) {

            array_walk_recursive($line, function (&$value, $key) use ($replace) {

                $value = $this->makeReplacements($value, $replace);

            });

            return $line;

        }

    }

    /**

     * Make the place-holder replacements on a line.

     *

     * @param  string  $line

     * @param  array  $replace

     * @return string

     */

    protected function makeReplacements($line, array $replace)

    {

        if (empty($replace)) {

            return $line;

        }

        $shouldReplace = [];

        foreach ($replace as $key => $value) {

            $shouldReplace[':'.Str::ucfirst($key ?? '')] = Str::ucfirst($value ?? '');

            $shouldReplace[':'.Str::upper($key ?? '')] = Str::upper($value ?? '');

            $shouldReplace[':'.$key] = $value;

        }

        return strtr($line, $shouldReplace);

    }

    /**

     * Add translation lines to the given locale.

     *

     * @param  array  $lines

     * @param  string  $locale

     * @param  string  $namespace

     * @return void

     */

    public function addLines(array $lines, $locale, $namespace = '*')

    {

        foreach ($lines as $key => $value) {

            [$group, $item] = explode('.', $key, 2);

            Arr::set($this->loaded, "$namespace.$group.$locale.$item", $value);

        }

    }

    /**

     * Load the specified language group.

     *

     * @param  string  $namespace

     * @param  string  $group

     * @param  string  $locale

     * @return void

     */

    public function load($namespace, $group, $locale)

    {

        if ($this->isLoaded($namespace, $group, $locale)) {

            return;

        }

        // The loader is responsible for returning the array of language lines for the

        // given namespace, group, and locale. We'll set the lines in this array of

        // lines that have already been loaded so that we can easily access them.

        $lines = $this->loader->load($locale, $group, $namespace);

        $this->loaded[$namespace][$group][$locale] = $lines;

    }

    /**

     * Determine if the given group has been loaded.

     *

     * @param  string  $namespace

     * @param  string  $group

     * @param  string  $locale

     * @return bool

     */

    protected function isLoaded($namespace, $group, $locale)

    {

        return isset($this->loaded[$namespace][$group][$locale]);

    }

    /**

     * Add a new namespace to the loader.

     *

     * @param  string  $namespace

     * @param  string  $hint

     * @return void

     */

    public function addNamespace($namespace, $hint)

    {

        $this->loader->addNamespace($namespace, $hint);

    }

    /**

     * Add a new JSON path to the loader.

     *

     * @param  string  $path

     * @return void

     */

    public function addJsonPath($path)

    {

        $this->loader->addJsonPath($path);

    }

    /**

     * Parse a key into namespace, group, and item.

     *

     * @param  string  $key

     * @return array

     */

    public function parseKey($key)

    {

        $segments = parent::parseKey($key);

        if (is_null($segments[0])) {

            $segments[0] = '*';

        }

        return $segments;

    }

    /**

     * Get the array of locales to be checked.

     *

     * @param  string|null  $locale

     * @return array

     */

    protected function localeArray($locale)

    {

        $locales = array_filter([$locale ?: $this->locale, $this->fallback]);

        return call_user_func($this->determineLocalesUsing ?: fn () => $locales, $locales);

    }

    /**

     * Specify a callback that should be invoked to determined the applicable locale array.

     *

     * @param  callable  $callback

     * @return void

     */

    public function determineLocalesUsing($callback)

    {

        $this->determineLocalesUsing = $callback;

    }

    /**

     * Get the message selector instance.

     *

     * @return \Illuminate\Translation\MessageSelector

     */

    public function getSelector()

    {

        if (! isset($this->selector)) {

            $this->selector = new MessageSelector;

        }

        return $this->selector;

    }

    /**

     * Set the message selector instance.

     *

     * @param  \Illuminate\Translation\MessageSelector  $selector

     * @return void

     */

    public function setSelector(MessageSelector $selector)

    {

        $this->selector = $selector;

    }

    /**

     * Get the language line loader implementation.

     *

     * @return \Illuminate\Contracts\Translation\Loader

     */

    public function getLoader()

    {

        return $this->loader;

    }

    /**

     * Get the default locale being used.

     *

     * @return string

     */

    public function locale()

    {

        return $this->getLocale();

    }

    /**

     * Get the default locale being used.

     *

     * @return string

     */

    public function getLocale()

    {

        return $this->locale;

    }

    /**

     * Set the default locale.

     *

     * @param  string  $locale

     * @return void

     *

     * @throws \InvalidArgumentException

     */

    public function setLocale($locale)

    {

        if (Str::contains($locale, ['/', '\\'])) {

            throw new InvalidArgumentException('Invalid characters present in locale.');

        }

        $this->locale = $locale;

    }

    /**

     * Get the fallback locale being used.

     *

     * @return string

     */

    public function getFallback()

    {

        return $this->fallback;

    }

    /**

     * Set the fallback locale being used.

     *

     * @param  string  $fallback

     * @return void

     */

    public function setFallback($fallback)

    {

        $this->fallback = $fallback;

    }

    /**

     * Set the loaded translation groups.

     *

     * @param  array  $loaded

     * @return void

     */

    public function setLoaded(array $loaded)

    {

        $this->loaded = $loaded;

    }

}