* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Bridge\Twig\Extension; use Symfony\Component\HttpKernel\Debug\FileLinkFormatter; use Twig\Extension\AbstractExtension; use Twig\TwigFilter; /** * Twig extension relate to PHP code and used by the profiler and the default exception templates. * * @author Fabien Potencier */ final class CodeExtension extends AbstractExtension { private $fileLinkFormat; private $charset; private $projectDir; /** * @param string|FileLinkFormatter $fileLinkFormat The format for links to source files */ public function __construct($fileLinkFormat, string $projectDir, string $charset) { $this->fileLinkFormat = $fileLinkFormat ?: ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format'); $this->projectDir = str_replace('\\', '/', $projectDir).'/'; $this->charset = $charset; } /** * {@inheritdoc} */ public function getFilters(): array { return [ new TwigFilter('abbr_class', [$this, 'abbrClass'], ['is_safe' => ['html']]), new TwigFilter('abbr_method', [$this, 'abbrMethod'], ['is_safe' => ['html']]), new TwigFilter('format_args', [$this, 'formatArgs'], ['is_safe' => ['html']]), new TwigFilter('format_args_as_text', [$this, 'formatArgsAsText']), new TwigFilter('file_excerpt', [$this, 'fileExcerpt'], ['is_safe' => ['html']]), new TwigFilter('format_file', [$this, 'formatFile'], ['is_safe' => ['html']]), new TwigFilter('format_file_from_text', [$this, 'formatFileFromText'], ['is_safe' => ['html']]), new TwigFilter('format_log_message', [$this, 'formatLogMessage'], ['is_safe' => ['html']]), new TwigFilter('file_link', [$this, 'getFileLink']), new TwigFilter('file_relative', [$this, 'getFileRelative']), ]; } public function abbrClass(string $class): string { $parts = explode('\\', $class); $short = array_pop($parts); return sprintf('%s', $class, $short); } public function abbrMethod(string $method): string { if (str_contains($method, '::')) { [$class, $method] = explode('::', $method, 2); $result = sprintf('%s::%s()', $this->abbrClass($class), $method); } elseif ('Closure' === $method) { $result = sprintf('%1$s', $method); } else { $result = sprintf('%1$s()', $method); } return $result; } /** * Formats an array as a string. */ public function formatArgs(array $args): string { $result = []; foreach ($args as $key => $item) { if ('object' === $item[0]) { $parts = explode('\\', $item[1]); $short = array_pop($parts); $formattedValue = sprintf('object(%s)', $item[1], $short); } elseif ('array' === $item[0]) { $formattedValue = sprintf('array(%s)', \is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]); } elseif ('null' === $item[0]) { $formattedValue = 'null'; } elseif ('boolean' === $item[0]) { $formattedValue = ''.strtolower(var_export($item[1], true)).''; } elseif ('resource' === $item[0]) { $formattedValue = 'resource'; } else { $formattedValue = str_replace("\n", '', htmlspecialchars(var_export($item[1], true), \ENT_COMPAT | \ENT_SUBSTITUTE, $this->charset)); } $result[] = \is_int($key) ? $formattedValue : sprintf("'%s' => %s", $key, $formattedValue); } return implode(', ', $result); } /** * Formats an array as a string. */ public function formatArgsAsText(array $args): string { return strip_tags($this->formatArgs($args)); } /** * Returns an excerpt of a code file around the given line number. */ public function fileExcerpt(string $file, int $line, int $srcContext = 3): ?string { if (is_file($file) && is_readable($file)) { // highlight_file could throw warnings // see https://bugs.php.net/25725 $code = @highlight_file($file, true); // remove main code/span tags $code = preg_replace('#^\s*(.*)\s*#s', '\\1', $code); // split multiline spans $code = preg_replace_callback('#]++)>((?:[^<]*+
)++[^<]*+)#', function ($m) { return "".str_replace('
', "
", $m[2]).''; }, $code); $content = explode('
', $code); $lines = []; if (0 > $srcContext) { $srcContext = \count($content); } for ($i = max($line - $srcContext, 1), $max = min($line + $srcContext, \count($content)); $i <= $max; ++$i) { $lines[] = ''.self::fixCodeMarkup($content[$i - 1]).''; } return '

'.implode("\n", $lines).'

'; } return null; } /** * Formats a file path. */ public function formatFile(string $file, int $line, string $text = null): string { $file = trim($file); if (null === $text) { $text = $file; if (null !== $rel = $this->getFileRelative($text)) { $rel = explode('/', $rel, 2); $text = sprintf('%s%s', $this->projectDir, $rel[0], '/'.($rel[1] ?? '')); } } if (0 < $line) { $text .= ' at line '.$line; } if (false !== $link = $this->getFileLink($file, $line)) { return sprintf('%s', htmlspecialchars($link, \ENT_COMPAT | \ENT_SUBSTITUTE, $this->charset), $text); } return $text; } /** * Returns the link for a given file/line pair. * * @return string|false */ public function getFileLink(string $file, int $line) { if ($fmt = $this->fileLinkFormat) { return \is_string($fmt) ? strtr($fmt, ['%f' => $file, '%l' => $line]) : $fmt->format($file, $line); } return false; } public function getFileRelative(string $file): ?string { $file = str_replace('\\', '/', $file); if (null !== $this->projectDir && str_starts_with($file, $this->projectDir)) { return ltrim(substr($file, \strlen($this->projectDir)), '/'); } return null; } public function formatFileFromText(string $text): string { return preg_replace_callback('/in ("|")?(.+?)\1(?: +(?:on|at))? +line (\d+)/s', function ($match) { return 'in '.$this->formatFile($match[2], $match[3]); }, $text); } /** * @internal */ public function formatLogMessage(string $message, array $context): string { if ($context && str_contains($message, '{')) { $replacements = []; foreach ($context as $key => $val) { if (is_scalar($val)) { $replacements['{'.$key.'}'] = $val; } } if ($replacements) { $message = strtr($message, $replacements); } } return htmlspecialchars($message, \ENT_COMPAT | \ENT_SUBSTITUTE, $this->charset); } protected static function fixCodeMarkup(string $line): string { // ending tag from previous line $opening = strpos($line, ''); if (false !== $closing && (false === $opening || $closing < $opening)) { $line = substr_replace($line, '', $closing, 7); } // missing tag at the end of line $opening = strpos($line, ''); if (false !== $opening && (false === $closing || $closing > $opening)) { $line .= ''; } return trim($line); } }