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[TwigBundle] added helpers for translations

This commit is contained in:
Fabien Potencier 2010-09-27 09:45:58 +02:00
parent a7537906b4
commit d6f55c31d1
4 changed files with 258 additions and 0 deletions
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10
src/Symfony/Bundle/TwigBundle/Extension/Helpers.php
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@ -4,6 +4,8 @@ namespace Symfony\Bundle\TwigBundle\Extension;
use Symfony\Component\Templating\Engine;
use Symfony\Bundle\TwigBundle\TokenParser\HelperTokenParser;
use Symfony\Bundle\TwigBundle\TokenParser\TransTokenParser;
use Symfony\Bundle\TwigBundle\TokenParser\TransChoiceTokenParser;
/*
* This file is part of the Symfony package.
@ -51,6 +53,14 @@ class Helpers extends \Twig_Extension
// {% flash 'notice' %}
new HelperTokenParser('flash', '<name>', 'session', 'flash'),
// {% trans "Symfony is great!" %}
new TransTokenParser(),
// {% transchoice count %}
// {0} There is no apples|{1} There is one apple|]1,Inf] There is {{ count }} apples
// {% endtranschoice %}
new TransChoiceTokenParser(),
);
}

94
src/Symfony/Bundle/TwigBundle/Node/TransNode.php Normal file
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@ -0,0 +1,94 @@
<?php
namespace Symfony\Bundle\TwigBundle\Node;
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
*
*
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
*/
class TransNode extends \Twig_Node
{
public function __construct(\Twig_NodeInterface $body, \Twig_NodeInterface $domain, \Twig_Node_Expression $count = null, $lineno, $tag = null)
{
parent::__construct(array('count' => $count, 'body' => $body, 'domain' => $domain), array(), $lineno, $tag);
}
/**
* Compiles the node to PHP.
*
* @param \Twig_Compiler A Twig_Compiler instance
*/
public function compile($compiler)
{
$compiler->addDebugInfo($this);
list($msg, $vars) = $this->compileString($this->body);
$method = null === $this->count ? 'trans' : 'transChoice';
$compiler
->write('echo $context[\'_view\'][\'translator\']->'.$method.'(')
->subcompile($msg)
;
$compiler->raw(', ');
if (null !== $this->count) {
$compiler
->subcompile($this->count)
->raw(', ')
;
}
$compiler->raw('array(');
foreach ($vars as $var) {
$compiler
->string('{{ '.$var['name'].' }}')
->raw(' => ')
->subcompile($var)
->raw(', ')
;
}
$compiler
->raw("), ")
->subcompile($this->domain)
->raw(");\n")
;
}
protected function compileString(\Twig_NodeInterface $body)
{
if ($body instanceof \Twig_Node_Expression_Name || $body instanceof \Twig_Node_Expression_Constant) {
return array($body, array());
}
$msg = '';
$vars = array();
foreach ($body as $node) {
if ($node instanceof \Twig_Node_Print) {
$n = $node->expr;
while ($n instanceof \Twig_Node_Expression_Filter) {
$n = $n->node;
}
$msg .= sprintf('{{ %s }}', $n['name']);
$vars[] = new \Twig_Node_Expression_Name($n['name'], $n->getLine());
} else {
$msg .= $node['data'];
}
}
return array(new \Twig_Node(array(new \Twig_Node_Expression_Constant(trim($msg), $node->getLine()))), $vars);
}
}

68
src/Symfony/Bundle/TwigBundle/TokenParser/TransChoiceTokenParser.php Normal file
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@ -0,0 +1,68 @@
<?php
namespace Symfony\Bundle\TwigBundle\TokenParser;
use Symfony\Bundle\TwigBundle\Node\TransNode;
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
*
*
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
*/
class TransChoiceTokenParser extends TransTokenParser
{
/**
* Parses a token and returns a node.
*
* @param \Twig_Token $token A Twig_Token instance
*
* @return \Twig_NodeInterface A Twig_NodeInterface instance
*/
public function parse(\Twig_Token $token)
{
$lineno = $token->getLine();
$stream = $this->parser->getStream();
$count = $this->parser->getExpressionParser()->parseExpression();
$domain = new \Twig_Node_Expression_Constant('messages', $lineno);
if (!$stream->test(\Twig_Token::BLOCK_END_TYPE) && $stream->test('from')) {
$stream->next();
$domain = $this->parser->getExpressionParser()->parseExpression();
}
$stream->expect(\Twig_Token::BLOCK_END_TYPE);
$body = $this->parser->subparse(array($this, 'decideTransChoiceFork'), true);
$stream->expect(\Twig_Token::BLOCK_END_TYPE);
$this->checkTransString($body, $lineno);
return new TransNode($body, $domain, $count, $lineno, $this->getTag());
}
public function decideTransChoiceFork($token)
{
return $token->test(array('endtranschoice'));
}
/**
* Gets the tag name associated with this token parser.
*
* @param string The tag name
*/
public function getTag()
{
return 'transchoice';
}
}

86
src/Symfony/Bundle/TwigBundle/TokenParser/TransTokenParser.php Normal file
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@ -0,0 +1,86 @@
<?php
namespace Symfony\Bundle\TwigBundle\TokenParser;
use Symfony\Bundle\TwigBundle\Node\TransNode;
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
*
*
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
*/
class TransTokenParser extends \Twig_TokenParser
{
/**
* Parses a token and returns a node.
*
* @param \Twig_Token $token A Twig_Token instance
*
* @return \Twig_NodeInterface A Twig_NodeInterface instance
*/
public function parse(\Twig_Token $token)
{
$lineno = $token->getLine();
$stream = $this->parser->getStream();
$domain = new \Twig_Node_Expression_Constant('messages', $lineno);
if (!$stream->test(\Twig_Token::BLOCK_END_TYPE)) {
if (!$stream->test('from')) {
$body = $this->parser->getExpressionParser()->parseExpression();
}
if ($stream->test('from')) {
$stream->next();
$domain = $this->parser->getExpressionParser()->parseExpression();
}
} else {
$stream->expect(\Twig_Token::BLOCK_END_TYPE);
$body = $this->parser->subparse(array($this, 'decideTransFork'));
}
$stream->expect(\Twig_Token::BLOCK_END_TYPE);
$this->checkTransString($body, $lineno);
return new TransNode($body, $domain, null, $lineno, $this->getTag());
}
public function decideTransFork($token)
{
return $token->test(array('endtrans'));
}
/**
* Gets the tag name associated with this token parser.
*
* @param string The tag name
*/
public function getTag()
{
return 'trans';
}
protected function checkTransString(\Twig_NodeInterface $body, $lineno)
{
foreach ($body as $i => $node) {
if (
$node instanceof \Twig_Node_Text
||
($node instanceof \Twig_Node_Print && $node->expr instanceof \Twig_Node_Expression_Name)
) {
continue;
}
throw new \Twig_SyntaxError(sprintf('The text to be translated with "trans" can only contain references to simple variables'), $lineno);
}
}
}