127 lines
4.8 KiB
PHP
127 lines
4.8 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\VarDumper\Dumper\ContextProvider;
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use Symfony\Component\HttpKernel\Debug\FileLinkFormatter;
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use Symfony\Component\VarDumper\Cloner\VarCloner;
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use Symfony\Component\VarDumper\Dumper\HtmlDumper;
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use Symfony\Component\VarDumper\VarDumper;
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use Twig\Template;
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/**
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* Tries to provide context from sources (class name, file, line, code excerpt, ...).
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*
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* @author Nicolas Grekas <p@tchwork.com>
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* @author Maxime Steinhausser <maxime.steinhausser@gmail.com>
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*/
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final class SourceContextProvider implements ContextProviderInterface
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{
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private $limit;
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private $charset;
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private $projectDir;
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private $fileLinkFormatter;
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public function __construct(string $charset = null, string $projectDir = null, FileLinkFormatter $fileLinkFormatter = null, int $limit = 9)
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{
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$this->charset = $charset;
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$this->projectDir = $projectDir;
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$this->fileLinkFormatter = $fileLinkFormatter;
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$this->limit = $limit;
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}
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public function getContext(): ?array
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{
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$trace = debug_backtrace(\DEBUG_BACKTRACE_PROVIDE_OBJECT | \DEBUG_BACKTRACE_IGNORE_ARGS, $this->limit);
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$file = $trace[1]['file'];
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$line = $trace[1]['line'];
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$name = false;
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$fileExcerpt = false;
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for ($i = 2; $i < $this->limit; ++$i) {
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if (isset($trace[$i]['class'], $trace[$i]['function'])
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&& 'dump' === $trace[$i]['function']
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&& VarDumper::class === $trace[$i]['class']
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) {
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$file = $trace[$i]['file'] ?? $file;
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$line = $trace[$i]['line'] ?? $line;
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while (++$i < $this->limit) {
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if (isset($trace[$i]['function'], $trace[$i]['file']) && empty($trace[$i]['class']) && !str_starts_with($trace[$i]['function'], 'call_user_func')) {
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$file = $trace[$i]['file'];
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$line = $trace[$i]['line'];
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break;
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} elseif (isset($trace[$i]['object']) && $trace[$i]['object'] instanceof Template) {
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$template = $trace[$i]['object'];
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$name = $template->getTemplateName();
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$src = method_exists($template, 'getSourceContext') ? $template->getSourceContext()->getCode() : (method_exists($template, 'getSource') ? $template->getSource() : false);
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$info = $template->getDebugInfo();
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if (isset($info[$trace[$i - 1]['line']])) {
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$line = $info[$trace[$i - 1]['line']];
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$file = method_exists($template, 'getSourceContext') ? $template->getSourceContext()->getPath() : null;
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if ($src) {
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$src = explode("\n", $src);
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$fileExcerpt = [];
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for ($i = max($line - 3, 1), $max = min($line + 3, \count($src)); $i <= $max; ++$i) {
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$fileExcerpt[] = '<li'.($i === $line ? ' class="selected"' : '').'><code>'.$this->htmlEncode($src[$i - 1]).'</code></li>';
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}
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$fileExcerpt = '<ol start="'.max($line - 3, 1).'">'.implode("\n", $fileExcerpt).'</ol>';
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}
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}
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break;
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}
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}
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break;
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}
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}
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if (false === $name) {
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$name = str_replace('\\', '/', $file);
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$name = substr($name, strrpos($name, '/') + 1);
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}
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$context = ['name' => $name, 'file' => $file, 'line' => $line];
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$context['file_excerpt'] = $fileExcerpt;
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if (null !== $this->projectDir) {
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$context['project_dir'] = $this->projectDir;
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if (str_starts_with($file, $this->projectDir)) {
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$context['file_relative'] = ltrim(substr($file, \strlen($this->projectDir)), \DIRECTORY_SEPARATOR);
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}
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}
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if ($this->fileLinkFormatter && $fileLink = $this->fileLinkFormatter->format($context['file'], $context['line'])) {
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$context['file_link'] = $fileLink;
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}
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return $context;
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}
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private function htmlEncode(string $s): string
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{
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$html = '';
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$dumper = new HtmlDumper(function ($line) use (&$html) { $html .= $line; }, $this->charset);
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$dumper->setDumpHeader('');
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$dumper->setDumpBoundaries('', '');
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$cloner = new VarCloner();
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$dumper->dump($cloner->cloneVar($s));
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return substr(strip_tags($html), 1, -1);
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}
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}
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