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<?php
/**
* Whoops - php errors for cool kids
* @author Filipe Dobreira <http://github.com/filp>
*/
namespace Whoops\Util;
use Symfony\Component\VarDumper\Cloner\VarCloner;
use Symfony\Component\VarDumper\Dumper\CliDumper;
use Symfony\Component\VarDumper\Dumper\HtmlDumper;
/**
* Exposes useful tools for working with/in templates
*/
class TemplateHelper
{
/**
* An array of variables to be passed to all templates
* @var array
*/
private $variables = array();
/**
* Escapes a string for output in an HTML document
*
* @param string $raw
* @return string
*/
public function escape($raw)
{
$flags = ENT_QUOTES;
// HHVM has all constants defined, but only ENT_IGNORE
// works at the moment
if (defined("ENT_SUBSTITUTE") && !defined("HHVM_VERSION")) {
$flags |= ENT_SUBSTITUTE;
} else {
// This is for 5.3.
// The documentation warns of a potential security issue,
// but it seems it does not apply in our case, because
// we do not blacklist anything anywhere.
$flags |= ENT_IGNORE;
}
return htmlspecialchars($raw, $flags, "UTF-8");
}
/**
* Escapes a string for output in an HTML document, but preserves
* URIs within it, and converts them to clickable anchor elements.
*
* @param string $raw
* @return string
*/
public function escapeButPreserveUris($raw)
{
$escaped = $this->escape($raw);
return preg_replace(
"@([A-z]+?://([-\w\.]+[-\w])+(:\d+)?(/([\w/_\.#-]*(\?\S+)?[^\.\s])?)?)@",
"<a href=\"$1\" target=\"_blank\">$1</a>", $escaped
);
}
/**
* Format the given value into a human readable string.
*
* @param mixed $value
* @return string
*/
public function dump($value)
{
if (class_exists('Symfony\Component\VarDumper\Cloner\VarCloner')) {
static $dumper = null;
// re-use the same var-dumper instance, so it won't re-render the global styles/scripts on each dump.
if (!$dumper) {
$dumper = new HtmlDumper();
$styles = array(
'default' => '',
'num' => '',
'const' => '',
'str' => '',
'note' => '',
'ref' => '',
'public' => '',
'protected' => '',
'private' => '',
'meta' => '',
'key' => '',
'index' => '',
);
$dumper->setStyles($styles);
}
$cloner = new VarCloner();
return $dumper->dump($cloner->cloneVar($value));
}
return print_r($value, true);
}
/**
* Convert a string to a slug version of itself
*
* @param string $original
* @return string
*/
public function slug($original)
{
$slug = str_replace(" ", "-", $original);
$slug = preg_replace('/[^\w\d\-\_]/i', '', $slug);
return strtolower($slug);
}
/**
* Given a template path, render it within its own scope. This
* method also accepts an array of additional variables to be
* passed to the template.
*
* @param string $template
* @param array $additionalVariables
*/
public function render($template, array $additionalVariables = null)
{
$variables = $this->getVariables();
// Pass the helper to the template:
$variables["tpl"] = $this;
if ($additionalVariables !== null) {
$variables = array_replace($variables, $additionalVariables);
}
call_user_func(function () {
extract(func_get_arg(1));
require func_get_arg(0);
}, $template, $variables);
}
/**
* Sets the variables to be passed to all templates rendered
* by this template helper.
*
* @param array $variables
*/
public function setVariables(array $variables)
{
$this->variables = $variables;
}
/**
* Sets a single template variable, by its name:
*
* @param string $variableName
* @param mixd $variableValue
*/
public function setVariable($variableName, $variableValue)
{
$this->variables[$variableName] = $variableValue;
}
/**
* Gets a single template variable, by its name, or
* $defaultValue if the variable does not exist
*
* @param string $variableName
* @param mixed $defaultValue
* @return mixed
*/
public function getVariable($variableName, $defaultValue = null)
{
return isset($this->variables[$variableName]) ?
$this->variables[$variableName] : $defaultValue;
}
/**
* Unsets a single template variable, by its name
*
* @param string $variableName
*/
public function delVariable($variableName)
{
unset($this->variables[$variableName]);
}
/**
* Returns all variables for this helper
*
* @return array
*/
public function getVariables()
{
return $this->variables;
}
}
|