move command execution code out of builder class

PHPCI/Helper/CommandExecutor.php

@@ -0,0 +1,77 @@
+<?php
+
+namespace PHPCI\Helper;
+
+
+use PHPCI\BuildLogger;
+
+class CommandExecutor
+{
+    /**
+     * @var \PHPCI\BuildLogger
+     */
+    protected $logger;
+
+    /**
+     * @var bool
+     */
+    protected $quiet;
+
+    /**
+     * @var bool
+     */
+    protected $verbose;
+
+    protected $lastOutput;
+
+    /**
+     * @param BuildLogger $logger
+     * @param bool $quiet
+     * @param bool $verbose
+     */
+    public function __construct(BuildLogger $logger, &$quiet = false, &$verbose = false)
+    {
+        $this->logger = $logger;
+        $this->quiet = $quiet;
+        $this->verbose = $verbose;
+
+        $this->lastOutput = array();
+    }
+
+    /**
+     * Executes shell commands.
+     * @param array $args
+     * @return bool Indicates success
+     */
+    public function executeCommand($args = array())
+    {
+        $command = call_user_func_array('sprintf', $args);
+
+        if ($this->quiet) {
+            $this->logger->log('Executing: ' . $command);
+        }
+
+        $status = 0;
+        exec($command, $this->lastOutput, $status);
+
+        if (!empty($this->lastOutput) && ($this->verbose|| $status != 0)) {
+            $this->logger->log($this->lastOutput);
+        }
+
+        $rtn = false;
+
+        if ($status == 0) {
+            $rtn = true;
+        }
+
+        return $rtn;
+    }
+
+    /**
+     * Returns the output from the last command run.
+     */
+    public function getLastOutput()
+    {
+        return implode(PHP_EOL, $this->lastOutput);
+    }
+}