Файл: concrete5.7.5.6/concrete/vendor/gettext/languages/src/Language.php
Строк: 397
<?php
namespace GettextLanguages;
use Exception;
/**
* Main class to convert the plural rules of a language from CLDR to gettext.
*/
class Language
{
/**
* The language ID.
* @var string
*/
public $id;
/**
* The language name.
* @var string
*/
public $name;
/**
* If this language is deprecated: the gettext code of the new language.
* @var null|string
*/
public $supersededBy;
/**
* The script name.
* @var string|null
*/
public $script;
/**
* The territory name.
* @var string|null
*/
public $territory;
/**
* The name of the base language
* @var string|null
*/
public $baseLanguage;
/**
* The list of categories.
* @var Category[]
*/
public $categories;
/**
* The gettext formula to decide which category should be applied.
* @var string
*/
public $formula;
/**
* Initialize the instance and parse the language code.
* @param array $info The result of CldrData::getLanguageInfo()
* @throws Exception Throws an Exception if $fullId is not valid.
*/
private function __construct($info)
{
$this->id = $info['id'];
$this->name = $info['name'];
$this->supersededBy = isset($info['supersededBy']) ? $info['supersededBy'] : null;
$this->script = isset($info['script']) ? $info['script'] : null;
$this->territory = isset($info['territory']) ? $info['territory'] : null;
$this->baseLanguage = isset($info['baseLanguage']) ? $info['baseLanguage'] : null;
// Let's build the category list
$this->categories = array();
foreach ($info['categories'] as $cldrCategoryId => $cldrFormulaAndExamples) {
$category = new Category($cldrCategoryId, $cldrFormulaAndExamples);
foreach ($this->categories as $c) {
if ($category->id === $c->id) {
throw new Exception("The category '{$category->id}' is specified more than once");
}
}
$this->categories[] = $category;
}
if (empty($this->categories)) {
throw new Exception("The language '$id' does not have any plural category");
}
// Let's sort the categories from 'zero' to 'other'
usort($this->categories, function (Category $category1, Category $category2) {
return array_search($category1->id, CldrData::$categories) - array_search($category2->id, CldrData::$categories);
});
// The 'other' category should always be there
if ($this->categories[count($this->categories) - 1]->id !== CldrData::OTHER_CATEGORY) {
throw new Exception("The language '$id' does not have the '".CldrData::OTHER_CATEGORY."' plural category");
}
$this->checkAlwaysTrueCategories();
$this->checkAlwaysFalseCategories();
$this->checkAllCategoriesWithExamples();
$this->formula = $this->buildFormula();
}
/**
* Return a list of all languages available.
* @throws Exception
* @return Language[]
*/
public static function getAll()
{
$result = array();
foreach (array_keys(CldrData::getLanguageNames()) as $cldrLanguageId) {
$result[] = new Language(CldrData::getLanguageInfo($cldrLanguageId));
}
return $result;
}
/**
* Return a Language instance given the language id
* @param string $id
* @return Language|null
*/
public static function getById($id)
{
$result = null;
$info = CldrData::getLanguageInfo($id);
if (isset($info)) {
$result = new Language($info);
}
return $result;
}
/**
* Let's look for categories that will always occur.
* This because with decimals (CLDR) we may have more cases, with integers (gettext) we have just one case.
* If we found that (single) category we reduce the categories to that one only.
*/
private function checkAlwaysTrueCategories()
{
$alwaysTrueCategory = null;
foreach ($this->categories as $category) {
if ($category->formula === true) {
if (!isset($category->examples)) {
throw new Exception("The category '{$category->id}' should always occur, but it does not have examples (so for CLDR it will never occur for integers!)");
}
$alwaysTrueCategory = $category;
break;
}
}
if (isset($alwaysTrueCategory)) {
foreach ($this->categories as $category) {
if (($category !== $alwaysTrueCategory) && isset($category->examples)) {
throw new Exception("The category '{$category->id}' should never occur, but it has some examples (so for CLDR it will occur!)");
}
}
$alwaysTrueCategory->id = CldrData::OTHER_CATEGORY;
$alwaysTrueCategory->formula = null;
$this->categories = array($alwaysTrueCategory);
}
}
/**
* Let's look for categories that will never occur.
* This because with decimals (CLDR) we may have more cases, with integers (gettext) we have some less cases.
* If we found those categories we strip them out.
*/
private function checkAlwaysFalseCategories()
{
$filtered = array();
foreach ($this->categories as $category) {
if ($category->formula === false) {
if (isset($category->examples)) {
throw new Exception("The category '{$category->id}' should never occur, but it has examples (so for CLDR it may occur!)");
}
} else {
$filtered[] = $category;
}
}
$this->categories = $filtered;
}
/**
* Let's look for categories that don't have examples.
* This because with decimals (CLDR) we may have more cases, with integers (gettext) we have some less cases.
* If we found those categories, we check that they never occur and we strip them out.
* @throws Exception
*/
private function checkAllCategoriesWithExamples()
{
$allCategoriesIds = array();
$goodCategories = array();
$badCategories = array();
$badCategoriesIds = array();
foreach ($this->categories as $category) {
$allCategoriesIds[] = $category->id;
if (isset($category->examples)) {
$goodCategories[] = $category;
} else {
$badCategories[] = $category;
$badCategoriesIds[] = $category->id;
}
}
if (empty($badCategories)) {
return;
}
$removeCategoriesWithoutExamples = false;
switch (implode(',', $badCategoriesIds).'@'.implode(',', $allCategoriesIds)) {
case CldrData::OTHER_CATEGORY.'@one,few,many,'.CldrData::OTHER_CATEGORY:
switch ($this->buildFormula()) {
case '(n % 10 == 1 && n % 100 != 11) ? 0 : ((n % 10 >= 2 && n % 10 <= 4 && (n % 100 < 12 || n % 100 > 14)) ? 1 : ((n % 10 == 0 || n % 10 >= 5 && n % 10 <= 9 || n % 100 >= 11 && n % 100 <= 14) ? 2 : 3))':
// Numbers ending with 0 => case 2 ('many')
// Numbers ending with 1 but not with 11 => case 0 ('one')
// Numbers ending with 11 => case 2 ('many')
// Numbers ending with 2 but not with 12 => case 1 ('few')
// Numbers ending with 12 => case 2 ('many')
// Numbers ending with 3 but not with 13 => case 1 ('few')
// Numbers ending with 13 => case 2 ('many')
// Numbers ending with 4 but not with 14 => case 1 ('few')
// Numbers ending with 14 => case 2 ('many')
// Numbers ending with 5 => case 2 ('many')
// Numbers ending with 6 => case 2 ('many')
// Numbers ending with 7 => case 2 ('many')
// Numbers ending with 8 => case 2 ('many')
// Numbers ending with 9 => case 2 ('many')
// => the 'other' case never occurs: use 'other' for 'many'
$removeCategoriesWithoutExamples = true;
break;
case '(n == 1) ? 0 : ((n % 10 >= 2 && n % 10 <= 4 && (n % 100 < 12 || n % 100 > 14)) ? 1 : ((n != 1 && (n % 10 == 0 || n % 10 == 1) || n % 10 >= 5 && n % 10 <= 9 || n % 100 >= 12 && n % 100 <= 14) ? 2 : 3))':
// Numbers ending with 0 => case 2 ('many')
// Numbers ending with 1 but not number 1 => case 2 ('many')
// Number 1 => case 0 ('one')
// Numbers ending with 2 but not with 12 => case 1 ('few')
// Numbers ending with 12 => case 2 ('many')
// Numbers ending with 3 but not with 13 => case 1 ('few')
// Numbers ending with 13 => case 2 ('many')
// Numbers ending with 4 but not with 14 => case 1 ('few')
// Numbers ending with 14 => case 2 ('many')
// Numbers ending with 5 => case 2 ('many')
// Numbers ending with 6 => case 2 ('many')
// Numbers ending with 7 => case 2 ('many')
// Numbers ending with 8 => case 2 ('many')
// Numbers ending with 9 => case 2 ('many')
// => the 'other' case never occurs: use 'other' for 'many'
$removeCategoriesWithoutExamples = true;
break;
}
}
if (!$removeCategoriesWithoutExamples) {
throw new Exception("Unhandled case of plural categories without examples '".implode(', ', $badCategoriesIds)."' out of '".implode(', ', $allCategoriesIds)."'");
}
if ($badCategories[count($badCategories) - 1]->id === CldrData::OTHER_CATEGORY) {
// We're removing the 'other' cagory: let's change the last good category to 'other'
$lastGood = $goodCategories[count($goodCategories) - 1];
$lastGood->id = CldrData::OTHER_CATEGORY;
$lastGood->formula = null;
}
$this->categories = $goodCategories;
}
/**
* Build the formula starting from the currently defined categories.
* @return string
*/
private function buildFormula()
{
$numCategories = count($this->categories);
switch ($numCategories) {
case 1:
// Just one category
return '0';
case 2:
return self::reduceFormula(self::reverseFormula($this->categories[0]->formula));
default:
$formula = strval($numCategories - 1);
for ($i = $numCategories - 2; $i >= 0; $i--) {
$f = self::reduceFormula($this->categories[$i]->formula);
if (!preg_match('/^([^()]+)$/', $f)) {
$f = "($f)";
}
$formula = "$f ? $i : $formula";
if ($i > 0) {
$formula = "($formula)";
}
}
return $formula;
}
}
/**
* Reverse a formula.
* @param string $formula
* @throws Exception
* @return string
*/
private static function reverseFormula($formula)
{
if (preg_match('/^n( % d+)? == d+(..d+|,d+)*?$/', $formula)) {
return str_replace(' == ', ' != ', $formula);
}
if (preg_match('/^n( % d+)? != d+(..d+|,d+)*?$/', $formula)) {
return str_replace(' != ', ' == ', $formula);
}
if (preg_match('/^(?n == d+ || n == d+)?$/', $formula)) {
return trim(str_replace(array(' == ', ' || '), array(' != ', ' && '), $formula), '()');
}
$m = null;
if (preg_match('/^(n(?: % d+)?) == (d+) && (n(?: % d+)?) != (d+)$/', $formula, $m)) {
return "{$m[1]} != {$m[2]} || {$m[3]} == {$m[4]}";
}
switch ($formula) {
case '(n == 1 || n == 2 || n == 3) || n % 10 != 4 && n % 10 != 6 && n % 10 != 9':
return 'n != 1 && n != 2 && n != 3 && (n % 10 == 4 || n % 10 == 6 || n % 10 == 9)';
case '(n == 0 || n == 1) || n >= 11 && n <= 99':
return 'n >= 2 && (n < 11 || n > 99)';
}
throw new Exception("Unable to reverse the formula '$formula'");
}
/**
* Reduce some excessively complex formulas.
* @param string $formula
* @return string
*/
private static function reduceFormula($formula)
{
$map = array(
'n != 0 && n != 1' => 'n > 1' ,
'(n == 0 || n == 1) && n != 0' => 'n == 1',
);
return isset($map[$formula]) ? $map[$formula] : $formula;
}
/**
* Take one variable and, if it's a string, we transliterate it to US-ASCII.
* @param mixed $value The variable to work on.
* @throws Exception
*/
private static function asciifier(&$value)
{
if (is_string($value) && ($value !== '')) {
// Avoid converting from 'Ÿ' to '"Y', let's prefer 'Y'
$transliterated = strtr($value, array(
'À' => 'A', 'Á' => 'A', 'Â' => 'A', 'Ã' => 'A', 'Ä' => 'A',
'È' => 'E', 'É' => 'E', 'Ê' => 'E', 'Ë' => 'E',
'Ì' => 'I', 'Í' => 'I', 'Î' => 'I', 'Ï' => 'I',
'Ñ' => 'N',
'Ò' => 'O', 'Ó' => 'O', 'Ô' => 'O', 'Õ' => 'O', 'Ö' => 'O',
'Ù' => 'U', 'Ú' => 'U', 'Û' => 'U', 'Ü' => 'U',
'Ÿ' => 'Y', 'Ý' => 'Y',
'à' => 'a', 'á' => 'a', 'â' => 'a', 'ã' => 'a', 'ä' => 'a',
'è' => 'e', 'é' => 'e', 'ê' => 'e', 'ë' => 'e',
'ì' => 'i', 'í' => 'i', 'î' => 'i', 'ï' => 'i',
'ñ' => 'n', 'ò' => 'o', 'ó' => 'o', 'ô' => 'o', 'õ' => 'o', 'ö' => 'o',
'ù' => 'u', 'ú' => 'u', 'û' => 'u', 'ü' => 'u',
'ý' => 'y', 'ÿ' => 'y',
));
$transliterated = @iconv('UTF-8', 'US-ASCII//IGNORE//TRANSLIT', $transliterated);
if (($transliterated === false) || ($transliterated === '')) {
throw new Exception("Unable to transliterate '$value'");
}
$value = $transliterated;
}
}
/**
* Returns a clone of this instance with all the strings to US-ASCII.
* @return Language
*/
public function getUSAsciiClone()
{
$clone = clone $this;
self::asciifier($clone->name);
self::asciifier($clone->formula);
$clone->categories = array();
foreach ($this->categories as $category) {
$categoryClone = clone $category;
self::asciifier($categoryClone->examples);
$clone->categories[] = $categoryClone;
}
return $clone;
}
}