colorMode = $colorMode ?: Configuration::COLOR_MODE_AUTO;
if (version_compare(PHP_VERSION, '5.3.6', '>=')) {
$this->backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
} else {
$this->backtrace = debug_backtrace();
}
return parent::__construct();
}
/**
* {@inheritdoc}
*/
protected function configure()
{
$this
->setName('whereami')
->setDefinition(array(
new InputOption('num', 'n', InputOption::VALUE_OPTIONAL, 'Number of lines before and after.', '5'),
))
->setDescription('Show where you are in the code.')
->setHelp(
<<<'HELP'
Show where you are in the code.
Optionally, include how many lines before and after you want to display.
e.g.
> whereami
> whereami -n10
HELP
);
}
/**
* Obtains the correct stack frame in the full backtrace.
*
* @return array
*/
protected function trace()
{
foreach (array_reverse($this->backtrace) as $stackFrame) {
if ($this->isDebugCall($stackFrame)) {
return $stackFrame;
}
}
return end($this->backtrace);
}
private static function isDebugCall(array $stackFrame)
{
$class = isset($stackFrame['class']) ? $stackFrame['class'] : null;
$function = isset($stackFrame['function']) ? $stackFrame['function'] : null;
return ($class === null && $function === 'Psy\debug') ||
($class === 'Psy\Shell' && in_array($function, array('__construct', 'debug')));
}
/**
* Determine the file and line based on the specific backtrace.
*
* @return array
*/
protected function fileInfo()
{
$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}
*/
protected function execute(InputInterface $input, OutputInterface $output)
{
$info = $this->fileInfo();
$num = $input->getOption('num');
$factory = new ConsoleColorFactory($this->colorMode);
$colors = $factory->getConsoleColor();
$highlighter = new Highlighter($colors);
$contents = file_get_contents($info['file']);
$output->startPaging();
$output->writeln('');
$output->writeln(sprintf('From %s:%s:', $this->replaceCwd($info['file']), $info['line']));
$output->writeln('');
$output->write($highlighter->getCodeSnippet($contents, $info['line'], $num, $num), ShellOutput::OUTPUT_RAW);
$output->stopPaging();
}
/**
* Replace the given directory from the start of a filepath.
*
* @param string $file
*
* @return string
*/
private function replaceCwd($file)
{
$cwd = getcwd();
if ($cwd === false) {
return $file;
}
$cwd = rtrim($cwd, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
return preg_replace('/^' . preg_quote($cwd, '/') . '/', '', $file);
}
}