PhabricatorConfigManagementDeleteWorkflow.php
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	<?php

	final class PhabricatorConfigManagementDeleteWorkflow
	extends PhabricatorConfigManagementWorkflow {

	protected function didConstruct() {
	$this
	->setName('delete')
	->setExamples('delete __key__')
	->setSynopsis('Delete a local configuration value.')
	->setArguments(
	array(
	array(
	'name' => 'args',
	'wildcard' => true,
	),
	));
	}

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

	$argv = $args->getArg('args');
	if (count($argv) == 0) {
	throw new PhutilArgumentUsageException(
	"Specify a configuration key to delete.");
	}

	$key = $argv[0];

	if (count($argv) > 1) {
	throw new PhutilArgumentUsageException(
	"Too many arguments: expected one key.");
	}

	$options = PhabricatorApplicationConfigOptions::loadAllOptions();
	if (empty($options[$key])) {
	throw new PhutilArgumentUsageException(
	"No such configuration key '{$key}'! Use `config list` to list all ".
	"keys.");
	}

	$config = new PhabricatorConfigLocalSource();
	$values = $config->getKeys(array($key));
	if (!$values) {
	throw new PhutilArgumentUsageException(
	"Configuration key '{$key}' is not set in local configuration!");
	}

	$config->deleteKeys(array($key));

	$console->writeOut(
	pht("Deleted '%s' from local configuration.", $key)."\n");
	}

	}