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<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2015 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy\Command;
use Psy\Shell;
use Symfony\Component\Console\Application;
use Symfony\Component\Console\Command\Command as BaseCommand;
use Symfony\Component\Console\Helper\Table;
use Symfony\Component\Console\Helper\TableHelper;
use Symfony\Component\Console\Helper\TableStyle;
use Symfony\Component\Console\Output\OutputInterface;
/**
* The Psy Shell base command.
*/
abstract class Command extends BaseCommand
{
/**
* Sets the application instance for this command.
*
* @param Application $application An Application instance
*
* @api
*/
public function setApplication(Application $application = null)
{
if ($application !== null && !$application instanceof Shell) {
throw new \InvalidArgumentException('PsySH Commands require an instance of Psy\Shell.');
}
return parent::setApplication($application);
}
/**
* {@inheritdoc}
*/
public function asText()
{
$messages = array(
'<comment>Usage:</comment>',
' ' . $this->getSynopsis(),
'',
);
if ($this->getAliases()) {
$messages[] = $this->aliasesAsText();
}
if ($this->getArguments()) {
$messages[] = $this->argumentsAsText();
}
if ($this->getOptions()) {
$messages[] = $this->optionsAsText();
}
if ($help = $this->getProcessedHelp()) {
$messages[] = '<comment>Help:</comment>';
$messages[] = ' ' . str_replace("\n", "\n ", $help) . "\n";
}
return implode("\n", $messages);
}
/**
* {@inheritdoc}
*/
private function getArguments()
{
$hidden = $this->getHiddenArguments();
return array_filter($this->getNativeDefinition()->getArguments(), function ($argument) use ($hidden) {
return !in_array($argument->getName(), $hidden);
});
}
/**
* These arguments will be excluded from help output.
*
* @return array
*/
protected function getHiddenArguments()
{
return array('command');
}
/**
* {@inheritdoc}
*/
private function getOptions()
{
$hidden = $this->getHiddenOptions();
return array_filter($this->getNativeDefinition()->getOptions(), function ($option) use ($hidden) {
return !in_array($option->getName(), $hidden);
});
}
/**
* These options will be excluded from help output.
*
* @return array
*/
protected function getHiddenOptions()
{
return array('verbose');
}
/**
* Format command aliases as text..
*
* @return string
*/
private function aliasesAsText()
{
return '<comment>Aliases:</comment> <info>' . implode(', ', $this->getAliases()) . '</info>' . PHP_EOL;
}
/**
* Format command arguments as text.
*
* @return string
*/
private function argumentsAsText()
{
$max = $this->getMaxWidth();
$messages = array();
$arguments = $this->getArguments();
if (!empty($arguments)) {
$messages[] = '<comment>Arguments:</comment>';
foreach ($arguments as $argument) {
if (null !== $argument->getDefault() && (!is_array($argument->getDefault()) || count($argument->getDefault()))) {
$default = sprintf('<comment> (default: %s)</comment>', $this->formatDefaultValue($argument->getDefault()));
} else {
$default = '';
}
$description = str_replace("\n", "\n" . str_pad('', $max + 2, ' '), $argument->getDescription());
$messages[] = sprintf(" <info>%-${max}s</info> %s%s", $argument->getName(), $description, $default);
}
$messages[] = '';
}
return implode(PHP_EOL, $messages);
}
/**
* Format options as text.
*
* @return string
*/
private function optionsAsText()
{
$max = $this->getMaxWidth();
$messages = array();
$options = $this->getOptions();
if ($options) {
$messages[] = '<comment>Options:</comment>';
foreach ($options as $option) {
if ($option->acceptValue() && null !== $option->getDefault() && (!is_array($option->getDefault()) || count($option->getDefault()))) {
$default = sprintf('<comment> (default: %s)</comment>', $this->formatDefaultValue($option->getDefault()));
} else {
$default = '';
}
$multiple = $option->isArray() ? '<comment> (multiple values allowed)</comment>' : '';
$description = str_replace("\n", "\n" . str_pad('', $max + 2, ' '), $option->getDescription());
$optionMax = $max - strlen($option->getName()) - 2;
$messages[] = sprintf(
" <info>%s</info> %-${optionMax}s%s%s%s",
'--' . $option->getName(),
$option->getShortcut() ? sprintf('(-%s) ', $option->getShortcut()) : '',
$description,
$default,
$multiple
);
}
$messages[] = '';
}
return implode(PHP_EOL, $messages);
}
/**
* Calculate the maximum padding width for a set of lines.
*
* @return int
*/
private function getMaxWidth()
{
$max = 0;
foreach ($this->getOptions() as $option) {
$nameLength = strlen($option->getName()) + 2;
if ($option->getShortcut()) {
$nameLength += strlen($option->getShortcut()) + 3;
}
$max = max($max, $nameLength);
}
foreach ($this->getArguments() as $argument) {
$max = max($max, strlen($argument->getName()));
}
return ++$max;
}
/**
* Format an option default as text.
*
* @param mixed $default
*
* @return string
*/
private function formatDefaultValue($default)
{
if (is_array($default) && $default === array_values($default)) {
return sprintf("array('%s')", implode("', '", $default));
}
return str_replace("\n", '', var_export($default, true));
}
/**
* Get a Table instance.
*
* Falls back to legacy TableHelper.
*
* @return Table|TableHelper
*/
protected function getTable(OutputInterface $output)
{
if (!class_exists('Symfony\Component\Console\Helper\Table')) {
return $this->getTableHelper();
}
$style = new TableStyle();
$style
->setVerticalBorderChar(' ')
->setHorizontalBorderChar('')
->setCrossingChar('');
$table = new Table($output);
return $table
->setRows(array())
->setStyle($style);
}
/**
* Legacy fallback for getTable.
*
* @return TableHelper
*/
protected function getTableHelper()
{
$table = $this->getApplication()->getHelperSet()->get('table');
return $table
->setRows(array())
->setLayout(TableHelper::LAYOUT_BORDERLESS)
->setHorizontalBorderChar('')
->setCrossingChar('');
}
}