backtrace = \debug_backtrace(\DEBUG_BACKTRACE_IGNORE_ARGS);
parent::__construct();
}
/**
* {@inheritdoc}
*/
protected function configure(): void
{
$this
->setName('whereami')
->setDefinition([
new InputOption('num', 'n', InputOption::VALUE_OPTIONAL, 'Number of lines before and after.', '5'),
new InputOption('file', 'f|a', InputOption::VALUE_NONE, 'Show the full source for the current file.'),
])
->setDescription('Show where you are in the code.')
->setHelp(
<<<'HELP'
Show where you are in the code.
Optionally, include the number of lines before and after you want to display,
or --file for the whole file.
e.g.
> whereami
> whereami -n10
> whereami --file
HELP
);
}
/**
* Obtains the correct stack frame in the full backtrace.
*
* @return array
*/
protected function trace(): array
{
foreach (\array_reverse($this->backtrace) as $stackFrame) {
if ($this->isDebugCall($stackFrame)) {
return $stackFrame;
}
}
return \end($this->backtrace);
}
private static function isDebugCall(array $stackFrame): bool
{
$class = isset($stackFrame['class']) ? $stackFrame['class'] : null;
$function = isset($stackFrame['function']) ? $stackFrame['function'] : null;
return ($class === null && $function === 'Psy\\debug') ||
($class === Shell::class && \in_array($function, ['__construct', 'debug']));
}
/**
* Determine the file and line based on the specific backtrace.
*
* @return array
*/
protected function fileInfo(): array
{
$stackFrame = $this->trace();
if (\preg_match('/eval\(/', $stackFrame['file'])) {
\preg_match_all('/([^\(]+)\((\d+)/', $stackFrame['file'], $matches);
$file = $matches[1][0];
$line = (int) $matches[2][0];
} else {
$file = $stackFrame['file'];
$line = $stackFrame['line'];
}
return \compact('file', 'line');
}
/**
* {@inheritdoc}
*
* @return int 0 if everything went fine, or an exit code
*/
protected function execute(InputInterface $input, OutputInterface $output): int
{
$shellOutput = $this->shellOutput($output);
$info = $this->fileInfo();
$num = $input->getOption('num');
$lineNum = $info['line'];
$startLine = \max($lineNum - $num, 1);
$endLine = $lineNum + $num;
$code = \file_get_contents($info['file']);
if ($input->getOption('file')) {
$startLine = 1;
$endLine = null;
}
$shellOutput->startPaging();
$output->writeln(\sprintf('From %s:%s:', ConfigPaths::prettyPath($info['file']), $lineNum));
$output->write(CodeFormatter::formatCode($code, $startLine, $endLine, $lineNum), false);
$shellOutput->stopPaging();
return 0;
}
}