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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\Caster\Caster;
use Symfony\Component\VarDumper\Cloner\AbstractCloner;
use Symfony\Component\VarDumper\Cloner\VarCloner;
use Symfony\Component\VarDumper\Dumper\HtmlDumper;
use Whoops\Exception\Frame;
/**
* Exposes useful tools for working with/in templates
*/
class TemplateHelper
{
/**
* An array of variables to be passed to all templates
* @var array
*/
private $variables = [];
/**
* @var HtmlDumper
*/
private $htmlDumper;
/**
* @var HtmlDumperOutput
*/
private $htmlDumperOutput;
/**
* @var AbstractCloner
*/
private $cloner;
/**
* @var string
*/
private $applicationRootPath;
public function __construct()
{
// root path for ordinary composer projects
$this->applicationRootPath = dirname(dirname(dirname(dirname(dirname(dirname(__DIR__))))));
}
/**
* 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;
}
$raw = str_replace(chr(9), ' ', $raw);
return htmlspecialchars($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\" rel=\"noreferrer noopener\">$1</a>",
$escaped
);
}
/**
* Makes sure that the given string breaks on the delimiter.
*
* @param string $delimiter
* @param string $s
* @return string
*/
public function breakOnDelimiter($delimiter, $s)
{
$parts = explode($delimiter, $s);
foreach ($parts as &$part) {
$part = '<span class="delimiter">' . $part . '</span>';
}
return implode($delimiter, $parts);
}
/**
* Replace the part of the path that all files have in common.
*
* @param string $path
* @return string
*/
public function shorten($path)
{
if ($this->applicationRootPath != "/") {
$path = str_replace($this->applicationRootPath, '…', $path);
}
return $path;
}
private function getDumper()
{
if (!$this->htmlDumper && class_exists('Symfony\Component\VarDumper\Cloner\VarCloner')) {
$this->htmlDumperOutput = new HtmlDumperOutput();
// re-use the same var-dumper instance, so it won't re-render the global styles/scripts on each dump.
$this->htmlDumper = new HtmlDumper($this->htmlDumperOutput);
$styles = [
'default' => 'color:#FFFFFF; line-height:normal; font:12px "Inconsolata", "Fira Mono", "Source Code Pro", Monaco, Consolas, "Lucida Console", monospace !important; word-wrap: break-word; white-space: pre-wrap; position:relative; z-index:99999; word-break: normal',
'num' => 'color:#BCD42A',
'const' => 'color: #4bb1b1;',
'str' => 'color:#BCD42A',
'note' => 'color:#ef7c61',
'ref' => 'color:#A0A0A0',
'public' => 'color:#FFFFFF',
'protected' => 'color:#FFFFFF',
'private' => 'color:#FFFFFF',
'meta' => 'color:#FFFFFF',
'key' => 'color:#BCD42A',
'index' => 'color:#ef7c61',
];
$this->htmlDumper->setStyles($styles);
}
return $this->htmlDumper;
}
/**
* Format the given value into a human readable string.
*
* @param mixed $value
* @return string
*/
public function dump($value)
{
$dumper = $this->getDumper();
if ($dumper) {
// re-use the same DumpOutput instance, so it won't re-render the global styles/scripts on each dump.
// exclude verbose information (e.g. exception stack traces)
if (class_exists('Symfony\Component\VarDumper\Caster\Caster')) {
$cloneVar = $this->getCloner()->cloneVar($value, Caster::EXCLUDE_VERBOSE);
// Symfony VarDumper 2.6 Caster class dont exist.
} else {
$cloneVar = $this->getCloner()->cloneVar($value);
}
$dumper->dump(
$cloneVar,
$this->htmlDumperOutput
);
$output = $this->htmlDumperOutput->getOutput();
$this->htmlDumperOutput->clear();
return $output;
}
return htmlspecialchars(print_r($value, true));
}
/**
* Format the args of the given Frame as a human readable html string
*
* @param Frame $frame
* @return string the rendered html
*/
public function dumpArgs(Frame $frame)
{
// we support frame args only when the optional dumper is available
if (!$this->getDumper()) {
return '';
}
$html = '';
$numFrames = count($frame->getArgs());
if ($numFrames > 0) {
$html = '<ol class="linenums">';
foreach ($frame->getArgs() as $j => $frameArg) {
$html .= '<li>'. $this->dump($frameArg) .'</li>';
}
$html .= '</ol>';
}
return $html;
}
/**
* 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 mixed $variableValue
*/
public function setVariable($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;
}
/**
* Set the cloner used for dumping variables.
*
* @param AbstractCloner $cloner
*/
public function setCloner($cloner)
{
$this->cloner = $cloner;
}
/**
* Get the cloner used for dumping variables.
*
* @return AbstractCloner
*/
public function getCloner()
{
if (!$this->cloner) {
$this->cloner = new VarCloner();
}
return $this->cloner;
}
/**
* Set the application root path.
*
* @param string $applicationRootPath
*/
public function setApplicationRootPath($applicationRootPath)
{
$this->applicationRootPath = $applicationRootPath;
}
/**
* Return the application root path.
*
* @return string
*/
public function getApplicationRootPath()
{
return $this->applicationRootPath;
}
}
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