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-rw-r--r--system/core/Common.php136
1 files changed, 84 insertions, 52 deletions
diff --git a/system/core/Common.php b/system/core/Common.php
index cd6b93355..e50f7794a 100644
--- a/system/core/Common.php
+++ b/system/core/Common.php
@@ -1,4 +1,4 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
@@ -39,6 +39,8 @@
* @param string
* @return bool TRUE if the current version is $version or higher
*/
+if ( ! function_exists('is_php'))
+{
function is_php($version = '5.0.0')
{
static $_is_php;
@@ -51,6 +53,7 @@
return $_is_php[$version];
}
+}
// ------------------------------------------------------------------------
@@ -58,12 +61,14 @@
* Tests for file writability
*
* is_writable() returns TRUE on Windows servers when you really can't write to
- * the file, based on the read-only attribute. is_writable() is also unreliable
+ * the file, based on the read-only attribute. is_writable() is also unreliable
* on Unix servers if safe_mode is on.
*
* @access private
* @return void
*/
+if ( ! function_exists('is_really_writable'))
+{
function is_really_writable($file)
{
// If we're on a Unix server with safe_mode off we call is_writable
@@ -73,7 +78,7 @@
}
// For windows servers and safe_mode "on" installations we'll actually
- // write a file then read it. Bah...
+ // write a file then read it. Bah...
if (is_dir($file))
{
$file = rtrim($file, '/').'/'.md5(mt_rand(1,100).mt_rand(1,100));
@@ -88,7 +93,7 @@
@unlink($file);
return TRUE;
}
- elseif (($fp = @fopen($file, FOPEN_WRITE_CREATE)) === FALSE)
+ elseif ( ! is_file($file) OR ($fp = @fopen($file, FOPEN_WRITE_CREATE)) === FALSE)
{
return FALSE;
}
@@ -96,14 +101,15 @@
fclose($fp);
return TRUE;
}
+}
// ------------------------------------------------------------------------
/**
* Class registry
*
-* This function acts as a singleton. If the requested class does not
-* exist it is instantiated and set to a static variable. If it has
+* This function acts as a singleton. If the requested class does not
+* exist it is instantiated and set to a static variable. If it has
* previously been instantiated the variable is returned.
*
* @access public
@@ -112,11 +118,13 @@
* @param string the class name prefix
* @return object
*/
+if ( ! function_exists('load_class'))
+{
function &load_class($class, $directory = 'libraries', $prefix = 'CI_')
{
static $_classes = array();
- // Does the class exist? If so, we're done...
+ // Does the class exist? If so, we're done...
if (isset($_classes[$class]))
{
return $_classes[$class];
@@ -128,27 +136,27 @@
// thenin the local application/libraries folder
foreach (array(BASEPATH, APPPATH) as $path)
{
- if (file_exists($path.$directory.'/'.$class.EXT))
+ if (file_exists($path.$directory.'/'.$class.'.php'))
{
$name = $prefix.$class;
if (class_exists($name) === FALSE)
{
- require($path.$directory.'/'.$class.EXT);
+ require($path.$directory.'/'.$class.'.php');
}
break;
}
}
- // Is the request a class extension? If so we load it too
- if (file_exists(APPPATH.$directory.'/'.config_item('subclass_prefix').$class.EXT))
+ // Is the request a class extension? If so we load it too
+ if (file_exists(APPPATH.$directory.'/'.config_item('subclass_prefix').$class.'.php'))
{
$name = config_item('subclass_prefix').$class;
if (class_exists($name) === FALSE)
{
- require(APPPATH.$directory.'/'.config_item('subclass_prefix').$class.EXT);
+ require(APPPATH.$directory.'/'.config_item('subclass_prefix').$class.'.php');
}
}
@@ -157,7 +165,7 @@
{
// Note: We use exit() rather then show_error() in order to avoid a
// self-referencing loop with the Excptions class
- exit('Unable to locate the specified class: '.$class.EXT);
+ exit('Unable to locate the specified class: '.$class.'.php');
}
// Keep track of what we just loaded
@@ -166,16 +174,19 @@
$_classes[$class] = new $name();
return $_classes[$class];
}
+}
// --------------------------------------------------------------------
/**
-* Keeps track of which libraries have been loaded. This function is
+* Keeps track of which libraries have been loaded. This function is
* called by the load_class() function above
*
* @access public
* @return array
*/
+if ( ! function_exists('is_loaded'))
+{
function is_loaded($class = '')
{
static $_is_loaded = array();
@@ -187,6 +198,7 @@
return $_is_loaded;
}
+}
// ------------------------------------------------------------------------
@@ -199,6 +211,8 @@
* @access private
* @return array
*/
+if ( ! function_exists('get_config'))
+{
function &get_config($replace = array())
{
static $_config;
@@ -208,19 +222,18 @@
return $_config[0];
}
- $file_path = APPPATH.'config/'.ENVIRONMENT.'/config'.EXT;
+ // Is the config file in the environment folder?
+ if ( ! defined('ENVIRONMENT') OR ! file_exists($file_path = APPPATH.'config/'.ENVIRONMENT.'/config.php'))
+ {
+ $file_path = APPPATH.'config/config.php';
+ }
// Fetch the config file
if ( ! file_exists($file_path))
{
- $file_path = APPPATH.'config/config'.EXT;
-
- if ( ! file_exists($file_path))
- {
- exit('The configuration file does not exist.');
- }
+ exit('The configuration file does not exist.');
}
-
+
require($file_path);
// Does the $config array exist in the file?
@@ -243,6 +256,7 @@
return $_config[0] =& $config;
}
+}
// ------------------------------------------------------------------------
@@ -252,6 +266,8 @@
* @access public
* @return mixed
*/
+if ( ! function_exists('config_item'))
+{
function config_item($item)
{
static $_config_item = array();
@@ -269,6 +285,7 @@
return $_config_item[$item];
}
+}
// ------------------------------------------------------------------------
@@ -284,12 +301,15 @@
* @access public
* @return void
*/
+if ( ! function_exists('show_error'))
+{
function show_error($message, $status_code = 500, $heading = 'An Error Was Encountered')
{
$_error =& load_class('Exceptions', 'core');
echo $_error->show_error($heading, $message, 'error_general', $status_code);
exit;
}
+}
// ------------------------------------------------------------------------
@@ -303,12 +323,15 @@
* @access public
* @return void
*/
+if ( ! function_exists('show_404'))
+{
function show_404($page = '', $log_error = TRUE)
{
$_error =& load_class('Exceptions', 'core');
$_error->show_404($page, $log_error);
exit;
}
+}
// ------------------------------------------------------------------------
@@ -321,6 +344,8 @@
* @access public
* @return void
*/
+if ( ! function_exists('log_message'))
+{
function log_message($level = 'error', $message, $php_error = FALSE)
{
static $_log;
@@ -333,6 +358,7 @@
$_log =& load_class('Log');
$_log->write_log($level, $message, $php_error);
}
+}
// ------------------------------------------------------------------------
@@ -344,6 +370,8 @@
* @param string
* @return void
*/
+if ( ! function_exists('set_status_header'))
+{
function set_status_header($code = 200, $text = '')
{
$stati = array(
@@ -400,7 +428,7 @@
if ($text == '')
{
- show_error('No status text available. Please check your status code number or supply your own message text.', 500);
+ show_error('No status text available. Please check your status code number or supply your own message text.', 500);
}
$server_protocol = (isset($_SERVER['SERVER_PROTOCOL'])) ? $_SERVER['SERVER_PROTOCOL'] : FALSE;
@@ -418,6 +446,7 @@
header("HTTP/1.1 {$code} {$text}", TRUE, $code);
}
}
+}
// --------------------------------------------------------------------
@@ -425,7 +454,7 @@
* Exception Handler
*
* This is the custom exception handler that is declaired at the top
-* of Codeigniter.php. The main reason we use this is to permit
+* of Codeigniter.php. The main reason we use this is to permit
* PHP errors to be logged in our own log files since the user may
* not have access to server logs. Since this function
* effectively intercepts PHP errors, however, we also need
@@ -435,6 +464,8 @@
* @access private
* @return void
*/
+if ( ! function_exists('_exception_handler'))
+{
function _exception_handler($severity, $message, $filepath, $line)
{
// We don't bother with "strict" notices since they tend to fill up
@@ -456,7 +487,7 @@
$_error->show_php_error($severity, $message, $filepath, $line);
}
- // Should we log the error? No? We're done...
+ // Should we log the error? No? We're done...
if (config_item('log_threshold') == 0)
{
return;
@@ -464,45 +495,46 @@
$_error->log_exception($severity, $message, $filepath, $line);
}
+}
+
+// --------------------------------------------------------------------
- // --------------------------------------------------------------------
-
- /**
- * Remove Invisible Characters
- *
- * This prevents sandwiching null characters
- * between ascii characters, like Java\0script.
- *
- * @access public
- * @param string
- * @return string
- */
- function remove_invisible_characters($str)
+/**
+ * Remove Invisible Characters
+ *
+ * This prevents sandwiching null characters
+ * between ascii characters, like Java\0script.
+ *
+ * @access public
+ * @param string
+ * @return string
+ */
+if ( ! function_exists('remove_invisible_characters'))
+{
+ function remove_invisible_characters($str, $url_encoded = TRUE)
{
- static $non_displayables;
+ $non_displayables = array();
+
+ // every control character except newline (dec 10)
+ // carriage return (dec 13), and horizontal tab (dec 09)
- if ( ! isset($non_displayables))
+ if ($url_encoded)
{
- // every control character except newline (dec 10), carriage return (dec 13), and horizontal tab (dec 09),
- $non_displayables = array(
- '/%0[0-8bcef]/', // url encoded 00-08, 11, 12, 14, 15
- '/%1[0-9a-f]/', // url encoded 16-31
- '/[\x00-\x08]/', // 00-08
- '/\x0b/', '/\x0c/', // 11, 12
- '/[\x0e-\x1f]/' // 14-31
- );
+ $non_displayables[] = '/%0[0-8bcef]/'; // url encoded 00-08, 11, 12, 14, 15
+ $non_displayables[] = '/%1[0-9a-f]/'; // url encoded 16-31
}
+ $non_displayables[] = '/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S'; // 00-08, 11, 12, 14-31, 127
+
do
{
- $cleaned = $str;
- $str = preg_replace($non_displayables, '', $str);
+ $str = preg_replace($non_displayables, '', $str, -1, $count);
}
- while ($cleaned != $str);
+ while ($count);
return $str;
}
-
+}
/* End of file Common.php */
/* Location: ./system/core/Common.php */ \ No newline at end of file