Do not use ./phpunit --version to generate the version identifier in PHAR build

Author: sebastianbergmann

build.xml

@@ -330,10 +330,7 @@
     </target>
 
     <target name="-phar-determine-version">
-        <exec executable="bash" outputproperty="version">
-            <arg value="-c"/>
-            <arg value="${basedir}/phpunit --version | awk 'BEGIN { ORS = &quot;&quot;; } {print $2}'"/>
-        </exec>
+        <exec executable="${basedir}/build/version.php" outputproperty="version" />
     </target>
 
     <target name="generate-project-documentation" depends="-phploc,-phpcs,-phpmd,-phpunit">

build/version.php

@@ -0,0 +1,13 @@
+#!/usr/bin/env php
+<?php
+require __DIR__ . '/../vendor/autoload.php';
+
+use SebastianBergmann\Version;
+
+$buffer  = file_get_contents(__DIR__ . '/../src/Runner/Version.php');
+$start   = strpos($buffer, 'new Version(\'') + strlen('new Version(\'');
+$end     = strpos($buffer, '\'', $start);
+$version = substr($buffer, $start, $end - $start);
+$version = new Version($version, __DIR__ . '/../');
+
+print $version->getVersion();

src/Runner/Version.php

@@ -8,6 +8,8 @@
  * file that was distributed with this source code.
  */
 
+use SebastianBergmann\Version;
+
 /**
  * This class defines the current version of PHPUnit.
  *
@@ -30,7 +32,7 @@ public static function id()
         }
 
         if (self::$version === null) {
-            $version       = new SebastianBergmann\Version('4.8.31', dirname(dirname(__DIR__)));
+            $version       = new Version('4.8.31', dirname(dirname(__DIR__)));
             self::$version = $version->getVersion();
         }