From 457f48e290387c7b4a8b34b960950abf8ef96dc2 Mon Sep 17 00:00:00 2001
From: Prabuddha Chakraborty <prabuddha.chakraborty@rtcamp.com>
Date: Thu, 5 Nov 2015 14:19:23 +0530
Subject: [PATCH] shell execute

---
 php/EE_CLI/Process.php | 105 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 php/EE_CLI/Process.php

diff --git a/php/EE_CLI/Process.php b/php/EE_CLI/Process.php
new file mode 100644
index 00000000..5b96fa14
--- /dev/null
+++ b/php/EE_CLI/Process.php
@@ -0,0 +1,105 @@
+<?php
+
+namespace EE_CLI;
+
+/**
+ * Run a system process, and learn what happened.
+ */
+class Process {
+
+	/**
+	 * @param string $command Command to execute.
+	 * @param string $cwd Directory to execute the command in.
+	 * @param array $env Environment variables to set when running the command.
+	 */
+	public static function create( $command, $cwd = null, $env = array() ) {
+		$proc = new self;
+
+		$proc->command = $command;
+		$proc->cwd = $cwd;
+		$proc->env = $env;
+
+		return $proc;
+	}
+
+	private $command, $cwd, $env;
+
+	private function __construct() {}
+
+	/**
+	 * Run the command.
+	 *
+	 * @return ProcessRun
+	 */
+	public function run() {
+		$cwd = $this->cwd;
+
+		$descriptors = array(
+			0 => STDIN,
+			1 => array( 'pipe', 'w' ),
+			2 => array( 'pipe', 'w' ),
+		);
+
+		$proc = proc_open( $this->command, $descriptors, $pipes, $cwd, $this->env );
+
+		$stdout = stream_get_contents( $pipes[1] );
+		fclose( $pipes[1] );
+
+		$stderr = stream_get_contents( $pipes[2] );
+		fclose( $pipes[2] );
+
+		return new ProcessRun( array(
+			'stdout' => $stdout,
+			'stderr' => $stderr,
+			'return_code' => proc_close( $proc ),
+			'command' => $this->command,
+			'cwd' => $cwd,
+			'env' => $this->env
+		) );
+	}
+
+	/**
+	 * Run the command, but throw an Exception on error.
+	 *
+	 * @return ProcessRun
+	 */
+	public function run_check() {
+		$r = $this->run();
+
+		if ( $r->return_code || !empty( $r->STDERR ) ) {
+			throw new \RuntimeException( $r );
+		}
+
+		return $r;
+	}
+}
+
+/**
+ * Results of an executed command.
+ */
+class ProcessRun {
+
+	/**
+	 * @var array $props Properties of executed command.
+	 */
+	public function __construct( $props ) {
+		foreach ( $props as $key => $value ) {
+			$this->$key = $value;
+		}
+	}
+
+	/**
+	 * Return properties of executed command as a string.
+	 *
+	 * @return string
+	 */
+	public function __toString() {
+		$out  = "$ $this->command\n";
+		$out .= "$this->stdout\n$this->stderr";
+		$out .= "cwd: $this->cwd\n";
+		$out .= "exit status: $this->return_code";
+
+		return $out;
+	}
+
+}