PhutilBinaryAnalyzer.php
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	<?php

	abstract class PhutilBinaryAnalyzer
	extends Phobject {

	public function getBinaryName() {
	return $this->getBinaryKey();
	}

	public function getBinaryKey() {
	return $this->getPhobjectClassConstant('BINARY');
	}

	public function isBinaryAvailable() {
	return Filesystem::binaryExists($this->getBinaryName());
	}

	abstract protected function newBinaryVersion();

	protected function newBinaryPath() {
	return Filesystem::resolveBinary($this->getBinaryName());
	}

	final public function getBinaryVersion() {
	return $this->newBinaryVersion();
	}

	final public function requireBinaryVersion() {
	$version = $this->getBinaryVersion();
	$binary = $this->getBinaryName();
	if ($version === null) {
	throw new Exception(
	pht(
	'Unable to determine the installed version of binary "%s". This '.
	'version is required.',
	$binary));
	}
	return $version;
	}

	final public function getBinaryPath() {
	return $this->newBinaryPath();
	}

	final public static function getAllBinaries() {
	return id(new PhutilClassMapQuery())
	->setAncestorClass(__CLASS__)
	->setUniqueMethod('getBinaryKey')
	->setSortMethod('getBinaryName')
	->execute();
	}

	final public static function getForBinary($binary) {
	$map = self::getAllBinaries();

	$analyzer = idx($map, $binary);
	if (!$analyzer) {
	throw new Exception(
	pht(
	'No analyzer is available for binary "%s".',
	$binary));
	}

	return $analyzer;
	}

	}