PhabricatorStorageManagementRenamespaceWorkflow.php
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PhabricatorStorageManagementRenamespaceWorkflow.php
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	<?php

	final class PhabricatorStorageManagementRenamespaceWorkflow
	extends PhabricatorStorageManagementWorkflow {

	protected function didConstruct() {
	$this
	->setName('renamespace')
	->setExamples(
	'renamespace [__options__] '.
	'--in __dump.sql__ --from __old__ --to __new__ > __out.sql__')
	->setSynopsis(pht('Change the database namespace of a .sql dump file.'))
	->setArguments(
	array(
	array(
	'name' => 'in',
	'param' => 'file',
	'help' => pht('SQL dumpfile to process.'),
	),
	array(
	'name' => 'from',
	'param' => 'namespace',
	'help' => pht('Current database namespace used by dumpfile.'),
	),
	array(
	'name' => 'to',
	'param' => 'namespace',
	'help' => pht('Desired database namespace for output.'),
	),
	));
	}

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

	$in = $args->getArg('in');
	if (!strlen($in)) {
	throw new PhutilArgumentUsageException(
	pht('Specify the dumpfile to read with --in.'));
	}

	$from = $args->getArg('from');
	if (!strlen($from)) {
	throw new PhutilArgumentUsageException(
	pht('Specify namespace to rename from with --from.'));
	}

	$to = $args->getArg('to');
	if (!strlen($to)) {
	throw new PhutilArgumentUsageException(
	pht('Specify namespace to rename to with --to.'));
	}

	$patterns = array(
	'use' => '@^(USE `)([^_]+)(_.*)$@',
	'create' => '@^(CREATE DATABASE /\.?\/ `)([^_]+)(_.)$@',
	);

	$found = array_fill_keys(array_keys($patterns), 0);

	$matches = null;
	foreach (new LinesOfALargeFile($in) as $line) {

	foreach ($patterns as $key => $pattern) {
	if (preg_match($pattern, $line, $matches)) {
	$namespace = $matches[2];
	if ($namespace != $from) {
	throw new Exception(
	pht(
	'Expected namespace "%s", found "%s": %s.',
	$from,
	$namespace,
	$line));
	}

	$line = $matches[1].$to.$matches[3];
	$found[$key]++;
	}
	}

	echo $line."\n";
	}

	// Give the user a chance to catch things if the results are crazy.
	$console->writeErr(
	pht(
	'Adjusted %s create statements and %s use statements.',
	new PhutilNumber($found['create']),
	new PhutilNumber($found['use']))."\n");

	return 0;
	}

	}

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