Revert "Revert "Language names via intl library.""

This reverts commit 4f35efa0ba.

library/intl/src/Currency/Currency.php

@@ -0,0 +1,168 @@
+<?php
+
+namespace CommerceGuys\Intl\Currency;
+
+class Currency implements CurrencyInterface
+{
+    /**
+     * The alphanumeric currency code.
+     *
+     * @var string
+     */
+    protected $currencyCode;
+
+    /**
+     * The currency name.
+     *
+     * @var string
+     */
+    protected $name;
+
+    /**
+     * The numeric currency code.
+     *
+     * @var string
+     */
+    protected $numericCode;
+
+    /**
+     * The currency symbol.
+     *
+     * @var string
+     */
+    protected $symbol;
+
+    /**
+     * The number of fraction digits.
+     *
+     * @var int
+     */
+    protected $fractionDigits;
+
+    /**
+     * The currency locale (i.e. "en_US").
+     *
+     * The currency name and symbol are locale specific.
+     *
+     * @var string
+     */
+    protected $locale;
+
+    /**
+     * Returns the string representation of the currency.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->getCurrencyCode();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getCurrencyCode()
+    {
+        return $this->currencyCode;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setCurrencyCode($currencyCode)
+    {
+        $this->currencyCode = $currencyCode;
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setName($name)
+    {
+        $this->name = $name;
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getNumericCode()
+    {
+        return $this->numericCode;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setNumericCode($numericCode)
+    {
+        $this->numericCode = $numericCode;
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getSymbol()
+    {
+        return $this->symbol;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setSymbol($symbol)
+    {
+        $this->symbol = $symbol;
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFractionDigits()
+    {
+        return $this->fractionDigits;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setFractionDigits($fractionDigits)
+    {
+        $this->fractionDigits = $fractionDigits;
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getLocale()
+    {
+        return $this->locale;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setLocale($locale)
+    {
+        $this->locale = $locale;
+
+        return $this;
+    }
+}

library/intl/src/Currency/CurrencyInterface.php

@@ -0,0 +1,82 @@
+<?php
+
+namespace CommerceGuys\Intl\Currency;
+
+interface CurrencyInterface
+{
+    /**
+     * Gets the alphabetic currency code.
+     *
+     * @return string
+     */
+    public function getCurrencyCode();
+
+    /**
+     * Sets the alphabetic currency code.
+     *
+     * @param string $currencyCode The alphabetic currency code.
+     */
+    public function setCurrencyCode($currencyCode);
+
+    /**
+     * Gets the currency name.
+     *
+     * @return string
+     */
+    public function getName();
+
+    /**
+     * Sets the currency name.
+     *
+     * @param string $name The currency name.
+     */
+    public function setName($name);
+
+    /**
+     * Gets the numeric currency code.
+     *
+     * The numeric code has three digits, and the first one can be a zero,
+     * hence the need to pass it around as a string.
+     *
+     * @return string
+     */
+    public function getNumericCode();
+
+    /**
+     * Sets the numeric currency code.
+     *
+     * @param string $numericCode The numeric currency code.
+     */
+    public function setNumericCode($numericCode);
+
+    /**
+     * Gets the currency symbol.
+     *
+     * @return string
+     */
+    public function getSymbol();
+
+    /**
+     * Sets the currency symbol.
+     *
+     * @param string $symbol The currency symbol.
+     */
+    public function setSymbol($symbol);
+
+    /**
+     * Gets the number of fraction digits.
+     *
+     * Used when rounding or formatting an amount for display.
+     * Actual storage precision can be greater.
+     *
+     * @return int
+     */
+    public function getFractionDigits();
+
+    /**
+     * Sets the number of fraction digits.
+     *
+     * @param int $fractionDigits The number of fraction digits.
+     */
+    public function setFractionDigits($fractionDigits);
+}

library/intl/src/Currency/CurrencyRepository.php

@@ -0,0 +1,122 @@
+<?php
+
+namespace CommerceGuys\Intl\Currency;
+
+use CommerceGuys\Intl\LocaleResolverTrait;
+use CommerceGuys\Intl\Exception\UnknownCurrencyException;
+
+/**
+ * Manages currencies based on JSON definitions.
+ */
+class CurrencyRepository implements CurrencyRepositoryInterface
+{
+    use LocaleResolverTrait;
+
+    /**
+     * Base currency definitions.
+     *
+     * Contains data common to all locales, such as the currency numeric
+     * code, number of fraction digits.
+     *
+     * @var array
+     */
+    protected $baseDefinitions = array();
+
+    /**
+     * Per-locale currency definitions.
+     *
+     * @var array
+     */
+    protected $definitions = array();
+
+    /**
+     * Creates a CurrencyRepository instance.
+     *
+     * @param string $definitionPath The path to the currency definitions.
+     *                               Defaults to 'resources/currency'.
+     */
+    public function __construct($definitionPath = null)
+    {
+        $this->definitionPath = $definitionPath ? $definitionPath : __DIR__ . '/../../resources/currency/';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get($currencyCode, $locale = null, $fallbackLocale = null)
+    {
+        $locale = $this->resolveLocale($locale, $fallbackLocale);
+        $definitions = $this->loadDefinitions($locale);
+        if (!isset($definitions[$currencyCode])) {
+            throw new UnknownCurrencyException($currencyCode);
+        }
+
+        return $this->createCurrencyFromDefinition($definitions[$currencyCode], $locale);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getAll($locale = null, $fallbackLocale = null)
+    {
+        $locale = $this->resolveLocale($locale, $fallbackLocale);
+        $definitions = $this->loadDefinitions($locale);
+        $currencies = array();
+        foreach ($definitions as $currencyCode => $definition) {
+            $currencies[$currencyCode] = $this->createCurrencyFromDefinition($definition, $locale);
+        }
+
+        return $currencies;
+    }
+
+    /**
+     * Loads the currency definitions for the provided locale.
+     *
+     * @param string $locale The desired locale.
+     *
+     * @return array
+     */
+    protected function loadDefinitions($locale)
+    {
+        if (!isset($this->definitions[$locale])) {
+            $filename = $this->definitionPath . $locale . '.json';
+            $this->definitions[$locale] = json_decode(file_get_contents($filename), true);
+
+            // Make sure the base definitions have been loaded.
+            if (empty($this->baseDefinitions)) {
+                $this->baseDefinitions = json_decode(file_get_contents($this->definitionPath . 'base.json'), true);
+            }
+            // Merge-in base definitions.
+            foreach ($this->definitions[$locale] as $currencyCode => $definition) {
+                $this->definitions[$locale][$currencyCode] += $this->baseDefinitions[$currencyCode];
+            }
+        }
+
+        return $this->definitions[$locale];
+    }
+
+    /**
+     * Creates a currency object from the provided definition.
+     *
+     * @param array  $definition The currency definition.
+     * @param string $locale     The locale of the currency definition.
+     *
+     * @return Currency
+     */
+    protected function createCurrencyFromDefinition(array $definition, $locale)
+    {
+        if (!isset($definition['fraction_digits'])) {
+            $definition['fraction_digits'] = 2;
+        }
+
+        $currency = new Currency();
+        $currency->setCurrencyCode($definition['code']);
+        $currency->setName($definition['name']);
+        $currency->setNumericCode($definition['numeric_code']);
+        $currency->setFractionDigits($definition['fraction_digits']);
+        $currency->setSymbol($definition['symbol']);
+        $currency->setLocale($locale);
+
+        return $currency;
+    }
+}

library/intl/src/Currency/CurrencyRepositoryInterface.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace CommerceGuys\Intl\Currency;
+
+/**
+ * Currency repository interface.
+ */
+interface CurrencyRepositoryInterface
+{
+    /**
+     * Returns a currency instance matching the provided currency code.
+     *
+     * @param string $currencyCode   The currency code.
+     * @param string $locale         The locale (i.e. fr-FR).
+     * @param string $fallbackLocale A fallback locale (i.e "en").
+     *
+     * @return CurrencyInterface
+     */
+    public function get($currencyCode, $locale = null, $fallbackLocale = null);
+
+    /**
+     * Returns all available currency instances.
+     *
+     * @param string $locale         The locale (i.e. fr-FR).
+     * @param string $fallbackLocale A fallback locale (i.e "en").
+     *
+     * @return array An array of currencies implementing the CurrencyInterface,
+     *               keyed by currency code.
+     */
+    public function getAll($locale = null, $fallbackLocale = null);
+}