You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
938 lines
25 KiB
938 lines
25 KiB
<?php
|
|
|
|
/*
|
|
* This file is part of Twig.
|
|
*
|
|
* (c) 2009 Fabien Potencier
|
|
*
|
|
* For the full copyright and license information, please view the LICENSE
|
|
* file that was distributed with this source code.
|
|
*/
|
|
|
|
/**
|
|
* Stores the Twig configuration.
|
|
*
|
|
* @package twig
|
|
* @author Fabien Potencier <[email protected]>
|
|
*/
|
|
class Twig_Environment
|
|
{
|
|
const VERSION = '1.2.0';
|
|
|
|
protected $charset;
|
|
protected $loader;
|
|
protected $debug;
|
|
protected $autoReload;
|
|
protected $cache;
|
|
protected $lexer;
|
|
protected $parser;
|
|
protected $compiler;
|
|
protected $baseTemplateClass;
|
|
protected $extensions;
|
|
protected $parsers;
|
|
protected $visitors;
|
|
protected $filters;
|
|
protected $tests;
|
|
protected $functions;
|
|
protected $globals;
|
|
protected $runtimeInitialized;
|
|
protected $loadedTemplates;
|
|
protected $strictVariables;
|
|
protected $unaryOperators;
|
|
protected $binaryOperators;
|
|
protected $templateClassPrefix = '__TwigTemplate_';
|
|
protected $functionCallbacks;
|
|
protected $filterCallbacks;
|
|
|
|
/**
|
|
* Constructor.
|
|
*
|
|
* Available options:
|
|
*
|
|
* * debug: When set to `true`, the generated templates have a __toString()
|
|
* method that you can use to display the generated nodes (default to
|
|
* false).
|
|
*
|
|
* * charset: The charset used by the templates (default to utf-8).
|
|
*
|
|
* * base_template_class: The base template class to use for generated
|
|
* templates (default to Twig_Template).
|
|
*
|
|
* * cache: An absolute path where to store the compiled templates, or
|
|
* false to disable compilation cache (default)
|
|
*
|
|
* * auto_reload: Whether to reload the template is the original source changed.
|
|
* If you don't provide the auto_reload option, it will be
|
|
* determined automatically base on the debug value.
|
|
*
|
|
* * strict_variables: Whether to ignore invalid variables in templates
|
|
* (default to false).
|
|
*
|
|
* * autoescape: Whether to enable auto-escaping (default to true);
|
|
*
|
|
* * optimizations: A flag that indicates which optimizations to apply
|
|
* (default to -1 which means that all optimizations are enabled;
|
|
* set it to 0 to disable)
|
|
*
|
|
* @param Twig_LoaderInterface $loader A Twig_LoaderInterface instance
|
|
* @param array $options An array of options
|
|
*/
|
|
public function __construct(Twig_LoaderInterface $loader = null, $options = array())
|
|
{
|
|
if (null !== $loader) {
|
|
$this->setLoader($loader);
|
|
}
|
|
|
|
$options = array_merge(array(
|
|
'debug' => false,
|
|
'charset' => 'UTF-8',
|
|
'base_template_class' => 'Twig_Template',
|
|
'strict_variables' => false,
|
|
'autoescape' => true,
|
|
'cache' => false,
|
|
'auto_reload' => null,
|
|
'optimizations' => -1,
|
|
), $options);
|
|
|
|
$this->debug = (bool) $options['debug'];
|
|
$this->charset = $options['charset'];
|
|
$this->baseTemplateClass = $options['base_template_class'];
|
|
$this->autoReload = null === $options['auto_reload'] ? $this->debug : (bool) $options['auto_reload'];
|
|
$this->extensions = array(
|
|
'core' => new Twig_Extension_Core(),
|
|
'escaper' => new Twig_Extension_Escaper((bool) $options['autoescape']),
|
|
'optimizer' => new Twig_Extension_Optimizer($options['optimizations']),
|
|
);
|
|
$this->strictVariables = (bool) $options['strict_variables'];
|
|
$this->runtimeInitialized = false;
|
|
$this->setCache($options['cache']);
|
|
$this->functionCallbacks = array();
|
|
$this->filterCallbacks = array();
|
|
}
|
|
|
|
/**
|
|
* Gets the base template class for compiled templates.
|
|
*
|
|
* @return string The base template class name
|
|
*/
|
|
public function getBaseTemplateClass()
|
|
{
|
|
return $this->baseTemplateClass;
|
|
}
|
|
|
|
/**
|
|
* Sets the base template class for compiled templates.
|
|
*
|
|
* @param string $class The base template class name
|
|
*/
|
|
public function setBaseTemplateClass($class)
|
|
{
|
|
$this->baseTemplateClass = $class;
|
|
}
|
|
|
|
/**
|
|
* Enables debugging mode.
|
|
*/
|
|
public function enableDebug()
|
|
{
|
|
$this->debug = true;
|
|
}
|
|
|
|
/**
|
|
* Disables debugging mode.
|
|
*/
|
|
public function disableDebug()
|
|
{
|
|
$this->debug = false;
|
|
}
|
|
|
|
/**
|
|
* Checks if debug mode is enabled.
|
|
*
|
|
* @return Boolean true if debug mode is enabled, false otherwise
|
|
*/
|
|
public function isDebug()
|
|
{
|
|
return $this->debug;
|
|
}
|
|
|
|
/**
|
|
* Enables the auto_reload option.
|
|
*/
|
|
public function enableAutoReload()
|
|
{
|
|
$this->autoReload = true;
|
|
}
|
|
|
|
/**
|
|
* Disables the auto_reload option.
|
|
*/
|
|
public function disableAutoReload()
|
|
{
|
|
$this->autoReload = false;
|
|
}
|
|
|
|
/**
|
|
* Checks if the auto_reload option is enabled.
|
|
*
|
|
* @return Boolean true if auto_reload is enabled, false otherwise
|
|
*/
|
|
public function isAutoReload()
|
|
{
|
|
return $this->autoReload;
|
|
}
|
|
|
|
/**
|
|
* Enables the strict_variables option.
|
|
*/
|
|
public function enableStrictVariables()
|
|
{
|
|
$this->strictVariables = true;
|
|
}
|
|
|
|
/**
|
|
* Disables the strict_variables option.
|
|
*/
|
|
public function disableStrictVariables()
|
|
{
|
|
$this->strictVariables = false;
|
|
}
|
|
|
|
/**
|
|
* Checks if the strict_variables option is enabled.
|
|
*
|
|
* @return Boolean true if strict_variables is enabled, false otherwise
|
|
*/
|
|
public function isStrictVariables()
|
|
{
|
|
return $this->strictVariables;
|
|
}
|
|
|
|
/**
|
|
* Gets the cache directory or false if cache is disabled.
|
|
*
|
|
* @return string|false
|
|
*/
|
|
public function getCache()
|
|
{
|
|
return $this->cache;
|
|
}
|
|
|
|
/**
|
|
* Sets the cache directory or false if cache is disabled.
|
|
*
|
|
* @param string|false $cache The absolute path to the compiled templates,
|
|
* or false to disable cache
|
|
*/
|
|
public function setCache($cache)
|
|
{
|
|
$this->cache = $cache ? $cache : false;
|
|
}
|
|
|
|
/**
|
|
* Gets the cache filename for a given template.
|
|
*
|
|
* @param string $name The template name
|
|
*
|
|
* @return string The cache file name
|
|
*/
|
|
public function getCacheFilename($name)
|
|
{
|
|
if (false === $this->cache) {
|
|
return false;
|
|
}
|
|
|
|
$class = substr($this->getTemplateClass($name), strlen($this->templateClassPrefix));
|
|
|
|
return $this->getCache().'/'.substr($class, 0, 2).'/'.substr($class, 2, 2).'/'.substr($class, 4).'.php';
|
|
}
|
|
|
|
/**
|
|
* Gets the template class associated with the given string.
|
|
*
|
|
* @param string $name The name for which to calculate the template class name
|
|
*
|
|
* @return string The template class name
|
|
*/
|
|
public function getTemplateClass($name)
|
|
{
|
|
return $this->templateClassPrefix.md5($this->loader->getCacheKey($name));
|
|
}
|
|
|
|
/**
|
|
* Gets the template class prefix.
|
|
*
|
|
* @return string The template class prefix
|
|
*/
|
|
public function getTemplateClassPrefix()
|
|
{
|
|
return $this->templateClassPrefix;
|
|
}
|
|
|
|
/**
|
|
* Renders a template.
|
|
*
|
|
* @param string $name The template name
|
|
* @param array $context An array of parameters to pass to the template
|
|
*
|
|
* @return string The rendered template
|
|
*/
|
|
public function render($name, array $context = array())
|
|
{
|
|
return $this->loadTemplate($name)->render($context);
|
|
}
|
|
|
|
/**
|
|
* Loads a template by name.
|
|
*
|
|
* @param string $name The template name
|
|
*
|
|
* @return Twig_TemplateInterface A template instance representing the given template name
|
|
*/
|
|
public function loadTemplate($name)
|
|
{
|
|
$cls = $this->getTemplateClass($name);
|
|
|
|
if (isset($this->loadedTemplates[$cls])) {
|
|
return $this->loadedTemplates[$cls];
|
|
}
|
|
|
|
if (!class_exists($cls, false)) {
|
|
if (false === $cache = $this->getCacheFilename($name)) {
|
|
eval('?>'.$this->compileSource($this->loader->getSource($name), $name));
|
|
} else {
|
|
if (!is_file($cache) || ($this->isAutoReload() && !$this->loader->isFresh($name, filemtime($cache)))) {
|
|
$this->writeCacheFile($cache, $this->compileSource($this->loader->getSource($name), $name));
|
|
}
|
|
|
|
require_once $cache;
|
|
}
|
|
}
|
|
|
|
if (!$this->runtimeInitialized) {
|
|
$this->initRuntime();
|
|
}
|
|
|
|
return $this->loadedTemplates[$cls] = new $cls($this);
|
|
}
|
|
|
|
public function resolveTemplate($names)
|
|
{
|
|
if (!is_array($names)) {
|
|
$names = array($names);
|
|
}
|
|
|
|
foreach ($names as $name) {
|
|
if ($name instanceof Twig_Template) {
|
|
return $name;
|
|
}
|
|
|
|
try {
|
|
return $this->loadTemplate($name);
|
|
} catch (Twig_Error_Loader $e) {
|
|
}
|
|
}
|
|
|
|
if (1 === count($names)) {
|
|
throw $e;
|
|
}
|
|
|
|
throw new Twig_Error_Loader(sprintf('Unable to find one of the following templates: "%s".', implode('", "', $names)));
|
|
}
|
|
|
|
/**
|
|
* Clears the internal template cache.
|
|
*/
|
|
public function clearTemplateCache()
|
|
{
|
|
$this->loadedTemplates = array();
|
|
}
|
|
|
|
/**
|
|
* Clears the template cache files on the filesystem.
|
|
*/
|
|
public function clearCacheFiles()
|
|
{
|
|
if (false === $this->cache) {
|
|
return;
|
|
}
|
|
|
|
foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->cache), RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
|
|
if ($file->isFile()) {
|
|
@unlink($file->getPathname());
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the Lexer instance.
|
|
*
|
|
* @return Twig_LexerInterface A Twig_LexerInterface instance
|
|
*/
|
|
public function getLexer()
|
|
{
|
|
if (null === $this->lexer) {
|
|
$this->lexer = new Twig_Lexer($this);
|
|
}
|
|
|
|
return $this->lexer;
|
|
}
|
|
|
|
/**
|
|
* Sets the Lexer instance.
|
|
*
|
|
* @param Twig_LexerInterface A Twig_LexerInterface instance
|
|
*/
|
|
public function setLexer(Twig_LexerInterface $lexer)
|
|
{
|
|
$this->lexer = $lexer;
|
|
}
|
|
|
|
/**
|
|
* Tokenizes a source code.
|
|
*
|
|
* @param string $source The template source code
|
|
* @param string $name The template name
|
|
*
|
|
* @return Twig_TokenStream A Twig_TokenStream instance
|
|
*/
|
|
public function tokenize($source, $name = null)
|
|
{
|
|
return $this->getLexer()->tokenize($source, $name);
|
|
}
|
|
|
|
/**
|
|
* Gets the Parser instance.
|
|
*
|
|
* @return Twig_ParserInterface A Twig_ParserInterface instance
|
|
*/
|
|
public function getParser()
|
|
{
|
|
if (null === $this->parser) {
|
|
$this->parser = new Twig_Parser($this);
|
|
}
|
|
|
|
return $this->parser;
|
|
}
|
|
|
|
/**
|
|
* Sets the Parser instance.
|
|
*
|
|
* @param Twig_ParserInterface A Twig_ParserInterface instance
|
|
*/
|
|
public function setParser(Twig_ParserInterface $parser)
|
|
{
|
|
$this->parser = $parser;
|
|
}
|
|
|
|
/**
|
|
* Parses a token stream.
|
|
*
|
|
* @param Twig_TokenStream $tokens A Twig_TokenStream instance
|
|
*
|
|
* @return Twig_Node_Module A Node tree
|
|
*/
|
|
public function parse(Twig_TokenStream $tokens)
|
|
{
|
|
return $this->getParser()->parse($tokens);
|
|
}
|
|
|
|
/**
|
|
* Gets the Compiler instance.
|
|
*
|
|
* @return Twig_CompilerInterface A Twig_CompilerInterface instance
|
|
*/
|
|
public function getCompiler()
|
|
{
|
|
if (null === $this->compiler) {
|
|
$this->compiler = new Twig_Compiler($this);
|
|
}
|
|
|
|
return $this->compiler;
|
|
}
|
|
|
|
/**
|
|
* Sets the Compiler instance.
|
|
*
|
|
* @param Twig_CompilerInterface $compiler A Twig_CompilerInterface instance
|
|
*/
|
|
public function setCompiler(Twig_CompilerInterface $compiler)
|
|
{
|
|
$this->compiler = $compiler;
|
|
}
|
|
|
|
/**
|
|
* Compiles a Node.
|
|
*
|
|
* @param Twig_NodeInterface $node A Twig_NodeInterface instance
|
|
*
|
|
* @return string The compiled PHP source code
|
|
*/
|
|
public function compile(Twig_NodeInterface $node)
|
|
{
|
|
return $this->getCompiler()->compile($node)->getSource();
|
|
}
|
|
|
|
/**
|
|
* Compiles a template source code.
|
|
*
|
|
* @param string $source The template source code
|
|
* @param string $name The template name
|
|
*
|
|
* @return string The compiled PHP source code
|
|
*/
|
|
public function compileSource($source, $name = null)
|
|
{
|
|
try {
|
|
return $this->compile($this->parse($this->tokenize($source, $name)));
|
|
} catch (Twig_Error $e) {
|
|
$e->setTemplateFile($name);
|
|
throw $e;
|
|
} catch (Exception $e) {
|
|
throw new Twig_Error_Runtime(sprintf('An exception has been thrown during the compilation of a template ("%s").', $e->getMessage()), -1, $name, $e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the Loader instance.
|
|
*
|
|
* @param Twig_LoaderInterface $loader A Twig_LoaderInterface instance
|
|
*/
|
|
public function setLoader(Twig_LoaderInterface $loader)
|
|
{
|
|
$this->loader = $loader;
|
|
}
|
|
|
|
/**
|
|
* Gets the Loader instance.
|
|
*
|
|
* @return Twig_LoaderInterface A Twig_LoaderInterface instance
|
|
*/
|
|
public function getLoader()
|
|
{
|
|
return $this->loader;
|
|
}
|
|
|
|
/**
|
|
* Sets the default template charset.
|
|
*
|
|
* @param string $charset The default charset
|
|
*/
|
|
public function setCharset($charset)
|
|
{
|
|
$this->charset = $charset;
|
|
}
|
|
|
|
/**
|
|
* Gets the default template charset.
|
|
*
|
|
* @return string The default charset
|
|
*/
|
|
public function getCharset()
|
|
{
|
|
return $this->charset;
|
|
}
|
|
|
|
/**
|
|
* Initializes the runtime environment.
|
|
*/
|
|
public function initRuntime()
|
|
{
|
|
$this->runtimeInitialized = true;
|
|
|
|
foreach ($this->getExtensions() as $extension) {
|
|
$extension->initRuntime($this);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns true if the given extension is registered.
|
|
*
|
|
* @param string $name The extension name
|
|
*
|
|
* @return Boolean Whether the extension is registered or not
|
|
*/
|
|
public function hasExtension($name)
|
|
{
|
|
return isset($this->extensions[$name]);
|
|
}
|
|
|
|
/**
|
|
* Gets an extension by name.
|
|
*
|
|
* @param string $name The extension name
|
|
*
|
|
* @return Twig_ExtensionInterface A Twig_ExtensionInterface instance
|
|
*/
|
|
public function getExtension($name)
|
|
{
|
|
if (!isset($this->extensions[$name])) {
|
|
throw new Twig_Error_Runtime(sprintf('The "%s" extension is not enabled.', $name));
|
|
}
|
|
|
|
return $this->extensions[$name];
|
|
}
|
|
|
|
/**
|
|
* Registers an extension.
|
|
*
|
|
* @param Twig_ExtensionInterface $extension A Twig_ExtensionInterface instance
|
|
*/
|
|
public function addExtension(Twig_ExtensionInterface $extension)
|
|
{
|
|
$this->extensions[$extension->getName()] = $extension;
|
|
}
|
|
|
|
/**
|
|
* Removes an extension by name.
|
|
*
|
|
* @param string $name The extension name
|
|
*/
|
|
public function removeExtension($name)
|
|
{
|
|
unset($this->extensions[$name]);
|
|
}
|
|
|
|
/**
|
|
* Registers an array of extensions.
|
|
*
|
|
* @param array $extensions An array of extensions
|
|
*/
|
|
public function setExtensions(array $extensions)
|
|
{
|
|
foreach ($extensions as $extension) {
|
|
$this->addExtension($extension);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns all registered extensions.
|
|
*
|
|
* @return array An array of extensions
|
|
*/
|
|
public function getExtensions()
|
|
{
|
|
return $this->extensions;
|
|
}
|
|
|
|
/**
|
|
* Registers a Token Parser.
|
|
*
|
|
* @param Twig_TokenParserInterface $parser A Twig_TokenParserInterface instance
|
|
*/
|
|
public function addTokenParser(Twig_TokenParserInterface $parser)
|
|
{
|
|
if (null === $this->parsers) {
|
|
$this->getTokenParsers();
|
|
}
|
|
|
|
$this->parsers->addTokenParser($parser);
|
|
}
|
|
|
|
/**
|
|
* Gets the registered Token Parsers.
|
|
*
|
|
* @return Twig_TokenParserInterface[] An array of Twig_TokenParserInterface instances
|
|
*/
|
|
public function getTokenParsers()
|
|
{
|
|
if (null === $this->parsers) {
|
|
$this->parsers = new Twig_TokenParserBroker;
|
|
foreach ($this->getExtensions() as $extension) {
|
|
$parsers = $extension->getTokenParsers();
|
|
foreach($parsers as $parser) {
|
|
if ($parser instanceof Twig_TokenParserInterface) {
|
|
$this->parsers->addTokenParser($parser);
|
|
} else if ($parser instanceof Twig_TokenParserBrokerInterface) {
|
|
$this->parsers->addTokenParserBroker($parser);
|
|
} else {
|
|
throw new Twig_Error_Runtime('getTokenParsers() must return an array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $this->parsers;
|
|
}
|
|
|
|
/**
|
|
* Registers a Node Visitor.
|
|
*
|
|
* @param Twig_NodeVisitorInterface $visitor A Twig_NodeVisitorInterface instance
|
|
*/
|
|
public function addNodeVisitor(Twig_NodeVisitorInterface $visitor)
|
|
{
|
|
if (null === $this->visitors) {
|
|
$this->getNodeVisitors();
|
|
}
|
|
|
|
$this->visitors[] = $visitor;
|
|
}
|
|
|
|
/**
|
|
* Gets the registered Node Visitors.
|
|
*
|
|
* @return Twig_NodeVisitorInterface[] An array of Twig_NodeVisitorInterface instances
|
|
*/
|
|
public function getNodeVisitors()
|
|
{
|
|
if (null === $this->visitors) {
|
|
$this->visitors = array();
|
|
foreach ($this->getExtensions() as $extension) {
|
|
$this->visitors = array_merge($this->visitors, $extension->getNodeVisitors());
|
|
}
|
|
}
|
|
|
|
return $this->visitors;
|
|
}
|
|
|
|
/**
|
|
* Registers a Filter.
|
|
*
|
|
* @param string $name The filter name
|
|
* @param Twig_FilterInterface $visitor A Twig_FilterInterface instance
|
|
*/
|
|
public function addFilter($name, Twig_FilterInterface $filter)
|
|
{
|
|
if (null === $this->filters) {
|
|
$this->loadFilters();
|
|
}
|
|
|
|
$this->filters[$name] = $filter;
|
|
}
|
|
|
|
/**
|
|
* Get a filter by name.
|
|
*
|
|
* Subclasses may override this method and load filters differently;
|
|
* so no list of filters is available.
|
|
*
|
|
* @param string $name The filter name
|
|
*
|
|
* @return Twig_Filter|false A Twig_Filter instance or false if the filter does not exists
|
|
*/
|
|
public function getFilter($name)
|
|
{
|
|
if (null === $this->filters) {
|
|
$this->loadFilters();
|
|
}
|
|
|
|
if (isset($this->filters[$name])) {
|
|
return $this->filters[$name];
|
|
}
|
|
|
|
foreach ($this->filterCallbacks as $callback) {
|
|
if (false !== $filter = call_user_func($callback, $name)) {
|
|
return $filter;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public function registerUndefinedFilterCallback($callable)
|
|
{
|
|
$this->filterCallbacks[] = $callable;
|
|
}
|
|
|
|
/**
|
|
* Gets the registered Filters.
|
|
*
|
|
* @return Twig_FilterInterface[] An array of Twig_FilterInterface instances
|
|
*/
|
|
protected function loadFilters()
|
|
{
|
|
$this->filters = array();
|
|
foreach ($this->getExtensions() as $extension) {
|
|
$this->filters = array_merge($this->filters, $extension->getFilters());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Registers a Test.
|
|
*
|
|
* @param string $name The test name
|
|
* @param Twig_TestInterface $visitor A Twig_TestInterface instance
|
|
*/
|
|
public function addTest($name, Twig_TestInterface $test)
|
|
{
|
|
if (null === $this->tests) {
|
|
$this->getTests();
|
|
}
|
|
|
|
$this->tests[$name] = $test;
|
|
}
|
|
|
|
/**
|
|
* Gets the registered Tests.
|
|
*
|
|
* @return Twig_TestInterface[] An array of Twig_TestInterface instances
|
|
*/
|
|
public function getTests()
|
|
{
|
|
if (null === $this->tests) {
|
|
$this->tests = array();
|
|
foreach ($this->getExtensions() as $extension) {
|
|
$this->tests = array_merge($this->tests, $extension->getTests());
|
|
}
|
|
}
|
|
|
|
return $this->tests;
|
|
}
|
|
|
|
/**
|
|
* Registers a Function.
|
|
*
|
|
* @param string $name The function name
|
|
* @param Twig_FunctionInterface $function A Twig_FunctionInterface instance
|
|
*/
|
|
public function addFunction($name, Twig_FunctionInterface $function)
|
|
{
|
|
if (null === $this->functions) {
|
|
$this->loadFunctions();
|
|
}
|
|
|
|
$this->functions[$name] = $function;
|
|
}
|
|
|
|
/**
|
|
* Get a function by name.
|
|
*
|
|
* Subclasses may override this method and load functions differently;
|
|
* so no list of functions is available.
|
|
*
|
|
* @param string $name function name
|
|
*
|
|
* @return Twig_Function|false A Twig_Function instance or false if the function does not exists
|
|
*/
|
|
public function getFunction($name)
|
|
{
|
|
if (null === $this->functions) {
|
|
$this->loadFunctions();
|
|
}
|
|
|
|
if (isset($this->functions[$name])) {
|
|
return $this->functions[$name];
|
|
}
|
|
|
|
foreach ($this->functionCallbacks as $callback) {
|
|
if (false !== $function = call_user_func($callback, $name)) {
|
|
return $function;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public function registerUndefinedFunctionCallback($callable)
|
|
{
|
|
$this->functionCallbacks[] = $callable;
|
|
}
|
|
|
|
protected function loadFunctions()
|
|
{
|
|
$this->functions = array();
|
|
foreach ($this->getExtensions() as $extension) {
|
|
$this->functions = array_merge($this->functions, $extension->getFunctions());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Registers a Global.
|
|
*
|
|
* @param string $name The global name
|
|
* @param mixed $value The global value
|
|
*/
|
|
public function addGlobal($name, $value)
|
|
{
|
|
if (null === $this->globals) {
|
|
$this->getGlobals();
|
|
}
|
|
|
|
$this->globals[$name] = $value;
|
|
}
|
|
|
|
/**
|
|
* Gets the registered Globals.
|
|
*
|
|
* @return array An array of globals
|
|
*/
|
|
public function getGlobals()
|
|
{
|
|
if (null === $this->globals) {
|
|
$this->globals = array();
|
|
foreach ($this->getExtensions() as $extension) {
|
|
$this->globals = array_merge($this->globals, $extension->getGlobals());
|
|
}
|
|
}
|
|
|
|
return $this->globals;
|
|
}
|
|
|
|
/**
|
|
* Gets the registered unary Operators.
|
|
*
|
|
* @return array An array of unary operators
|
|
*/
|
|
public function getUnaryOperators()
|
|
{
|
|
if (null === $this->unaryOperators) {
|
|
$this->initOperators();
|
|
}
|
|
|
|
return $this->unaryOperators;
|
|
}
|
|
|
|
/**
|
|
* Gets the registered binary Operators.
|
|
*
|
|
* @return array An array of binary operators
|
|
*/
|
|
public function getBinaryOperators()
|
|
{
|
|
if (null === $this->binaryOperators) {
|
|
$this->initOperators();
|
|
}
|
|
|
|
return $this->binaryOperators;
|
|
}
|
|
|
|
protected function initOperators()
|
|
{
|
|
$this->unaryOperators = array();
|
|
$this->binaryOperators = array();
|
|
foreach ($this->getExtensions() as $extension) {
|
|
$operators = $extension->getOperators();
|
|
|
|
if (!$operators) {
|
|
continue;
|
|
}
|
|
|
|
if (2 !== count($operators)) {
|
|
throw new InvalidArgumentException(sprintf('"%s::getOperators()" does not return a valid operators array.', get_class($extension)));
|
|
}
|
|
|
|
$this->unaryOperators = array_merge($this->unaryOperators, $operators[0]);
|
|
$this->binaryOperators = array_merge($this->binaryOperators, $operators[1]);
|
|
}
|
|
}
|
|
|
|
protected function writeCacheFile($file, $content)
|
|
{
|
|
if (!is_dir(dirname($file))) {
|
|
mkdir(dirname($file), 0777, true);
|
|
}
|
|
|
|
$tmpFile = tempnam(dirname($file), basename($file));
|
|
if (false !== @file_put_contents($tmpFile, $content)) {
|
|
// rename does not work on Win32 before 5.2.6
|
|
if (@rename($tmpFile, $file) || (@copy($tmpFile, $file) && unlink($tmpFile))) {
|
|
chmod($file, 0644);
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
throw new Twig_Error_Runtime(sprintf('Failed to write cache file "%s".', $file));
|
|
}
|
|
}
|
|
|