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<?php
namespace DebugBar\DataFormatter;
use DebugBar\DataCollector\AssetProvider;
use DebugBar\DataFormatter\VarDumper\DebugBarHtmlDumper;
use Symfony\Component\VarDumper\Cloner\Data\SeekingData;
use Symfony\Component\VarDumper\Cloner\Data;
use Symfony\Component\VarDumper\Cloner\VarCloner;
/**
* Clones and renders variables in HTML format using the Symfony VarDumper component.
*
* Cloning is decoupled from rendering, so that dumper users can have the fastest possible cloning
* performance, while delaying rendering until it is actually needed.
*/
class DebugBarVarDumper implements AssetProvider
{
protected static $defaultClonerOptions = array();
protected static $defaultDumperOptions = array(
'expanded_depth' => 0,
'styles' => array(
// NOTE: 'default' CSS is also specified in debugbar.css
'default' => 'word-wrap: break-word; white-space: pre-wrap; word-break: normal',
'num' => 'font-weight:bold; color:#1299DA',
'const' => 'font-weight:bold',
'str' => 'font-weight:bold; color:#3A9B26',
'note' => 'color:#1299DA',
'ref' => 'color:#7B7B7B',
'public' => 'color:#000000',
'protected' => 'color:#000000',
'private' => 'color:#000000',
'meta' => 'color:#B729D9',
'key' => 'color:#3A9B26',
'index' => 'color:#1299DA',
'ellipsis' => 'color:#A0A000',
),
);
protected $clonerOptions;
protected $dumperOptions;
/** @var VarCloner */
protected $cloner;
/** @var DebugBarHtmlDumper */
protected $dumper;
/**
* Gets the VarCloner instance with configuration options set.
*
* @return VarCloner
*/
protected function getCloner()
{
if (!$this->cloner) {
$clonerOptions = $this->getClonerOptions();
if (isset($clonerOptions['casters'])) {
$this->cloner = new VarCloner($clonerOptions['casters']);
} else {
$this->cloner = new VarCloner();
}
if (isset($clonerOptions['additional_casters'])) {
$this->cloner->addCasters($clonerOptions['additional_casters']);
}
if (isset($clonerOptions['max_items'])) {
$this->cloner->setMaxItems($clonerOptions['max_items']);
}
if (isset($clonerOptions['max_string'])) {
$this->cloner->setMaxString($clonerOptions['max_string']);
}
// setMinDepth was added to Symfony 3.4:
if (isset($clonerOptions['min_depth']) && method_exists($this->cloner, 'setMinDepth')) {
$this->cloner->setMinDepth($clonerOptions['min_depth']);
}
}
return $this->cloner;
}
/**
* Gets the DebugBarHtmlDumper instance with configuration options set.
*
* @return DebugBarHtmlDumper
*/
protected function getDumper()
{
if (!$this->dumper) {
$this->dumper = new DebugBarHtmlDumper();
$dumperOptions = $this->getDumperOptions();
if (isset($dumperOptions['styles'])) {
$this->dumper->setStyles($dumperOptions['styles']);
}
}
return $this->dumper;
}
/**
* Gets the array of non-default VarCloner configuration options.
*
* @return array
*/
public function getClonerOptions()
{
if ($this->clonerOptions === null) {
$this->clonerOptions = self::$defaultClonerOptions;
}
return $this->clonerOptions;
}
/**
* Merges an array of non-default VarCloner configuration options with the existing non-default
* options.
*
* Configuration options are:
* - casters: a map of VarDumper Caster objects to use instead of the default casters.
* - additional_casters: a map of VarDumper Caster objects to use in addition to the default
* casters.
* - max_items: maximum number of items to clone beyond the minimum depth.
* - max_string: maximum string size
* - min_depth: minimum tree depth to clone before counting items against the max_items limit.
* (Requires Symfony 3.4; ignored on older versions.)
*
* @param array $options
*/
public function mergeClonerOptions($options)
{
$this->clonerOptions = $options + $this->getClonerOptions();
$this->cloner = null;
}
/**
* Resets the array of non-default VarCloner configuration options without retaining any of the
* existing non-default options.
*
* Configuration options are:
* - casters: a map of VarDumper Caster objects to use instead of the default casters.
* - additional_casters: a map of VarDumper Caster objects to use in addition to the default
* casters.
* - max_items: maximum number of items to clone beyond the minimum depth.
* - max_string: maximum string size
* - min_depth: minimum tree depth to clone before counting items against the max_items limit.
* (Requires Symfony 3.4; ignored on older versions.)
*
* @param array $options
*/
public function resetClonerOptions($options = null)
{
$this->clonerOptions = ($options ?: array()) + self::$defaultClonerOptions;
$this->cloner = null;
}
/**
* Gets the array of non-default HtmlDumper configuration options.
*
* @return array
*/
public function getDumperOptions()
{
if ($this->dumperOptions === null) {
$this->dumperOptions = self::$defaultDumperOptions;
}
return $this->dumperOptions;
}
/**
* Merges an array of non-default HtmlDumper configuration options with the existing non-default
* options.
*
* Configuration options are:
* - styles: a map of CSS styles to include in the assets, as documented in
* HtmlDumper::setStyles.
* - expanded_depth: the tree depth to initially expand.
* (Requires Symfony 3.2; ignored on older versions.)
* - max_string: maximum string size.
* (Requires Symfony 3.2; ignored on older versions.)
* - file_link_format: link format for files; %f expanded to file and %l expanded to line
* (Requires Symfony 3.2; ignored on older versions.)
*
* @param array $options
*/
public function mergeDumperOptions($options)
{
$this->dumperOptions = $options + $this->getDumperOptions();
$this->dumper = null;
}
/**
* Resets the array of non-default HtmlDumper configuration options without retaining any of the
* existing non-default options.
*
* Configuration options are:
* - styles: a map of CSS styles to include in the assets, as documented in
* HtmlDumper::setStyles.
* - expanded_depth: the tree depth to initially expand.
* (Requires Symfony 3.2; ignored on older versions.)
* - max_string: maximum string size.
* (Requires Symfony 3.2; ignored on older versions.)
* - file_link_format: link format for files; %f expanded to file and %l expanded to line
* (Requires Symfony 3.2; ignored on older versions.)
*
* @param array $options
*/
public function resetDumperOptions($options = null)
{
$this->dumperOptions = ($options ?: array()) + self::$defaultDumperOptions;
$this->dumper = null;
}
/**
* Captures the data from a variable and serializes it for later rendering.
*
* @param mixed $data The variable to capture.
* @return string Serialized variable data.
*/
public function captureVar($data)
{
return serialize($this->getCloner()->cloneVar($data));
}
/**
* Gets the display options for the HTML dumper.
*
* @return array
*/
protected function getDisplayOptions()
{
$displayOptions = array();
$dumperOptions = $this->getDumperOptions();
// Only used by Symfony 3.2 and newer:
if (isset($dumperOptions['expanded_depth'])) {
$displayOptions['maxDepth'] = $dumperOptions['expanded_depth'];
}
// Only used by Symfony 3.2 and newer:
if (isset($dumperOptions['max_string'])) {
$displayOptions['maxStringLength'] = $dumperOptions['max_string'];
}
// Only used by Symfony 3.2 and newer:
if (isset($dumperOptions['file_link_format'])) {
$displayOptions['fileLinkFormat'] = $dumperOptions['file_link_format'];
}
return $displayOptions;
}
/**
* Renders previously-captured data from captureVar to HTML and returns it as a string.
*
* @param string $capturedData Captured data from captureVar.
* @param array $seekPath Pass an array of keys to traverse if you only want to render a subset
* of the data.
* @return string HTML rendering of the variable.
*/
public function renderCapturedVar($capturedData, $seekPath = array())
{
$data = unserialize($capturedData);
if (!method_exists($data, 'seek')) {
$data = new SeekingData($data->getRawData());
}
foreach ($seekPath as $key) {
$data = $data->seek($key);
}
return $this->dump($data);
}
/**
* Captures and renders the data from a variable to HTML and returns it as a string.
*
* @param mixed $data The variable to capture and render.
* @return string HTML rendering of the variable.
*/
public function renderVar($data)
{
return $this->dump($this->getCloner()->cloneVar($data));
}
/**
* Returns assets required for rendering variables.
*
* @return array
*/
public function getAssets() {
$dumper = $this->getDumper();
$dumper->resetDumpHeader(); // this will cause the default dump header to regenerate
return array(
'inline_head' => array(
'html_var_dumper' => $dumper->getDumpHeaderByDebugBar(),
),
);
}
/**
* Helper function to dump a Data object to HTML.
*
* @param Data $data
* @return string
*/
protected function dump(Data $data)
{
$dumper = $this->getDumper();
$output = fopen('php://memory', 'r+b');
$dumper->setOutput($output);
$dumper->setDumpHeader(''); // we don't actually want a dump header
// NOTE: Symfony 3.2 added the third $extraDisplayOptions parameter. Older versions will
// safely ignore it.
$dumper->dump($data, null, $this->getDisplayOptions());
$result = stream_get_contents($output, -1, 0);
fclose($output);
return $result;
}
}