xhpast_parse.php
7f0b4484469eproduction

xhpast_parse.php
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			<?php

			/*
			* Copyright 2011 Facebook, Inc.
			*
			* Licensed under the Apache License, Version 2.0 (the "License");
			* you may not use this file except in compliance with the License.
			* You may obtain a copy of the License at
			*
			* http://www.apache.org/licenses/LICENSE-2.0
			*
			* Unless required by applicable law or agreed to in writing, software
			* distributed under the License is distributed on an "AS IS" BASIS,
			* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
			* See the License for the specific language governing permissions and
			* limitations under the License.
			*/

			function xhpast_is_available() {
			static $available;
			if ($available === null) {
			$available = false;
			$bin = xhpast_get_binary_path();
			if (Filesystem::pathExists($bin)) {
			list($err, $stdout) = exec_manual('%s --version', $bin);
			if (!$err) {
			$version = trim($stdout);
			if ($version === "xhpast version 0.5") {
			$available = true;
			}
			}
			}
			}
			return $available;
			}

			function xhpast_get_binary_path() {
			return dirname(__FILE__).'/xhpast';
			}

			function xhpast_get_build_instructions() {
			$root = phutil_get_library_root('phutil');
			$make = $root.'/../scripts/build_xhpast.sh';
			$make = Filesystem::resolvePath($make);
			return <<<EOHELP
			Your version of 'xhpast' is unbuilt or out of date. Run this script to build it:

			\$ {$make}

			EOHELP;
			}

			function xhpast_get_parser_future($data) {
			if (!xhpast_is_available()) {
			throw new Exception(xhpast_get_build_instructions());
			}
			$future = new ExecFuture('%s', xhpast_get_binary_path());
			$future->write($data);

			return $future;
			}