Dynamic path for composer task

classes/phing/tasks/ext/ComposerTask.php

@@ -33,29 +33,31 @@
 class ComposerTask extends Task
 {
     /**
-     * @var string the path to php interpreter
+     * Path to php interpreter
+     * @var string
      */
     private $php = '';
 
     /**
-     *
-     * @var string the Composer command to execute
+     * Composer command to execute
+     * @var string
      */
     private $command = null;
 
     /**
-     *
+     * Commandline object
      * @var Commandline
      */
     private $commandLine = null;
+
     /**
-     *
-     * @var string path to Composer application
+     * Path to Composer application
+     * @var string
      */
     private $composer = 'composer.phar';
 
     /**
-     *
+     * Constructor.
      */
     public function __construct()
     {
@@ -64,7 +66,7 @@ public function __construct()
     }
 
     /**
-     * Initialize the interpreter with the Phing property php.interpreter
+     * Initialize the interpreter with the Phing property php.interpreter.
      */
     public function init()
     {
@@ -82,7 +84,7 @@ public function setPhp($php)
     }
 
     /**
-     * gets the path to php executable.
+     * Gets the path to php executable.
      *
      * @return string
      */
@@ -92,7 +94,8 @@ public function getPhp()
     }
 
     /**
-     * sets the Composer command to execute
+     * Sets the Composer command to execute.
+     *
      * @param string $command
      */
     public function setCommand($command)
@@ -101,7 +104,8 @@ public function setCommand($command)
     }
 
     /**
-     * return the Composer command to execute
+     * Return the Composer command to execute.
+     *
      * @return String
      */
     public function getCommand()
@@ -110,7 +114,8 @@ public function getCommand()
     }
 
     /**
-     * sets the path to Composer application
+     * Sets the path to Composer application.
+     *
      * @param string $console
      */
     public function setComposer($console)
@@ -119,16 +124,31 @@ public function setComposer($console)
     }
 
     /**
-     * returns the path to Composer application
+     * Returns the path to Composer application.
+     *
+     * If the filepath is non existent, try to find it on the system.
+     *
      * @return string
      */
     public function getComposer()
     {
+        $composerFile = new SplFileInfo($this->composer);
+        if (false === $composerFile->isFile()) {
+            $message = sprintf('Composer binary not found at "%s"', $composerFile);
+            $this->log($message, Project::MSG_WARN);
+            $find = $this->isWindows() ? 'where' : 'which';
+            exec($find . ' composer', $composerLocation);
+            if (!empty($composerLocation[0])) {
+                $message = sprintf('Composer binary found at "%s", updating location', $composerLocation[0]);
+                $this->log($message, Project::MSG_INFO);
+                $this->setComposer($composerLocation[0]);
+            }
+        }
         return $this->composer;
     }
 
     /**
-     * creates a nested arg task
+     * Creates a nested arg task.
      *
      * @return Arg Argument object
      */
@@ -139,7 +159,19 @@ public function createArg()
     }
 
     /**
-     * Prepares the command string to be executed
+     * Check is php is running on Windows.
+     *
+     * @return boolean
+     */
+    public function isWindows()
+    {
+        $operatingSystemName = php_uname('s');
+        return strtoupper(substr($operatingSystemName, 0, 3)) === 'WIN';
+    }
+
+    /**
+     * Prepares the command string to be executed.
+     *
      * @return string
      */
     private function prepareCommandLine()
@@ -156,22 +188,15 @@ private function prepareCommandLine()
     }
 
     /**
-     * executes the Composer task
+     * Executes the Composer task.
      */
     public function main()
     {
         $commandLine = $this->prepareCommandLine();
-        $this->log("executing " . $commandLine);
-
-        $composerFile = new SplFileInfo($this->getComposer());
-        if (false === $composerFile->isFile()) {
-            throw new BuildException(sprintf('Composer binary not found, path is "%s"', $composerFile));
-        }
-
-        $return = 0;
-        passthru($commandLine, $return);
+        $this->log("Executing " . $commandLine);
+        passthru($commandLine, $returnCode);
 
-        if ($return > 0) {
+        if ($returnCode > 0) {
             throw new BuildException("Composer execution failed");
         }
     }

test/classes/phing/tasks/ext/ComposerTaskTest.php

@@ -39,6 +39,7 @@ class ComposerTaskTest extends \PHPUnit\Framework\TestCase
     protected function setUp()
     {
         $this->object = new ComposerTask();
+        $this->object->setProject(new Project());
     }
 
     /**
@@ -77,9 +78,18 @@ public function testSetGetPhp()
      */
     public function testSetGetComposer()
     {
+        $composer = 'foo';
         $o = $this->object;
-        $o->setComposer('foo');
-        $this->assertEquals('foo', $o->getComposer());
+        $o->setComposer($composer);
+        $composerFile = new SplFileInfo($composer);
+        if (false === $composerFile->isFile()) {
+            $find = $o->isWindows() ? 'where' : 'which';
+            exec($find . ' composer', $composerLocation);
+            if (!empty($composerLocation[0])) {
+                $composer = $composerLocation[0];
+            }
+        }
+        $this->assertEquals($composer, $o->getComposer());
     }
 
     /**
@@ -98,11 +108,12 @@ public function testMultipleCalls()
         $o->setPhp('php');
         $o->setCommand('install');
         $o->createArg()->setValue('--dry-run');
+        $composer = $o->getComposer();
         $method = new ReflectionMethod('ComposerTask', 'prepareCommandLine');
         $method->setAccessible(true);
-        $this->assertEquals('php composer.phar install --dry-run', (string)$method->invoke($o));
+        $this->assertEquals('php ' . $composer . ' install --dry-run', (string)$method->invoke($o));
         $o->setCommand('update');
         $o->createArg()->setValue('--dev');
-        $this->assertEquals('php composer.phar update --dev', (string)$method->invoke($o));
+        $this->assertEquals('php ' . $composer . ' update --dev', (string)$method->invoke($o));
     }
 }