- Removed file system execute permission for all files (no directories)

- application/extensions file system permission now is 775
- application/logs file system permission now is 775
- Added extensions directory in application/: config, controllers, helpers, hooks, libraries, models, views and widgets
- Added view views/extensions/manage.php
- Added controller controllers/system/extensions/Manager.php
- Added library ExtensionsLib to manage extensions
- Added model models/system/Extensions_model.php
- Moved code related to print out info from MigrationLib to EPrintfLib

application/libraries/EPrintfLib.php

@@ -0,0 +1,138 @@
+<?php
+
+if (! defined("BASEPATH")) exit("No direct script access allowed");
+
+/**
+ * Enhanced printf utility library
+ * Usefull to print messages in a fancy and cool way from CLI and web interface
+ */
+class EPrintfLib
+{
+	// Prefixes and separator for messages
+	const MSG_PREFIX = "[-]";
+	const INFO_PREFIX = "[I]";
+	const ERROR_PREFIX = "[E]";
+	const SEPARATOR = "------------------------------";
+	// Console colors codes
+	const ERROR_COLOR = 31;
+	const INFO_COLOR = 33;
+
+	const PRINT_QUERY_LEN = 60;
+
+	// HTML colors names
+	private $HTML_COLORS = array(31 => "red", 33 => "orange");
+	// Used to set if the migration process is called via command line or via browser
+	private $cli;
+
+	/**
+	 * Object initialization
+	 */
+	public function __construct()
+	{
+		// Get code igniter instance
+        $this->ci =& get_instance();
+
+		$this->setCli();
+	}
+
+	// -------------------------------------------------------------------------------------------------
+	// Public methods
+
+	/**
+	 * Prints a formatted message
+	 */
+	public function printMessage($message)
+	{
+		$this->_print(EPrintfLib::MSG_PREFIX, $message);
+	}
+
+	/**
+	 * Prints a formatted info
+	 */
+	public function printInfo($info)
+	{
+		$this->_print(EPrintfLib::INFO_PREFIX, $info, EPrintfLib::INFO_COLOR);
+	}
+
+	/**
+	 * Prints a formatted error
+	 */
+	public function printError($error)
+	{
+		$this->_print(EPrintfLib::ERROR_PREFIX, $error, EPrintfLib::ERROR_COLOR);
+	}
+
+	/**
+	 * Print only the end of line
+	 */
+	public function printEOL()
+	{
+		echo $this->getEOL();
+	}
+
+	// -------------------------------------------------------------------------------------------------
+	// Private methods
+
+	/**
+	 * Set property cli to false if the migration process is called via command line
+	 * otherwise to false if it's called via browser
+	 */
+	private function setCli()
+	{
+		if ($this->ci->input->is_cli_request())
+		{
+			$this->cli = true;
+		}
+		else
+		{
+			$this->cli = false;
+		}
+	}
+
+	/**
+	 * Returns the character of end of line
+	 * PHP_EOL platform dependent if cli is true
+	 * Tag <br> if cli is false
+	 */
+	private function getEOL()
+	{
+		if ($this->cli === true)
+		{
+			return PHP_EOL;
+		}
+		else
+		{
+			return "<br>";
+		}
+	}
+
+	/**
+	 * Returns the string needed to color the output
+	 */
+	private function getColored($color)
+	{
+		$colored = "%s";
+
+		if (!is_null($color))
+		{
+			if ($this->cli === true)
+			{
+				$colored = "\033[".$color."m%s\033[37m";
+			}
+			else
+			{
+				$colored = "<font color=\"".$this->HTML_COLORS[$color]."\">%s</font>";
+			}
+		}
+
+		return $colored;
+	}
+
+	/**
+	 * Print a message, even colored if specified
+	 */
+	private function _print($prefix, $text, $color = null)
+	{
+		printf($this->getColored($color), sprintf("%s %s".$this->getEOL(), $prefix, $text));
+	}
+}