PhabricatorFilesManagementCatWorkflow.php
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	<?php

	final class PhabricatorFilesManagementCatWorkflow
	extends PhabricatorFilesManagementWorkflow {

	protected function didConstruct() {
	$this
	->setName('cat')
	->setSynopsis(pht('Print the contents of a file.'))
	->setArguments(
	array(
	array(
	'name' => 'begin',
	'param' => 'bytes',
	'help' => pht('Begin printing at a specific offset.'),
	),
	array(
	'name' => 'end',
	'param' => 'bytes',
	'help' => pht('End printing at a specific offset.'),
	),
	array(
	'name' => 'names',
	'wildcard' => true,
	),
	));
	}

	public function execute(PhutilArgumentParser $args) {
	$console = PhutilConsole::getConsole();

	$names = $args->getArg('names');
	if (count($names) > 1) {
	throw new PhutilArgumentUsageException(
	pht('Specify exactly one file to print, like "%s".', 'F123'));
	} else if (!$names) {
	throw new PhutilArgumentUsageException(
	pht('Specify a file to print, like "%s".', 'F123'));
	}

	$file = head($this->loadFilesWithNames($names));

	$begin = $args->getArg('begin');
	$end = $args->getArg('end');

	$iterator = $file->getFileDataIterator($begin, $end);
	foreach ($iterator as $data) {
	echo $data;
	}

	return 0;
	}

	}