From 3ef65bd7491f847fecdab1acc9687f0e90eee09b Mon Sep 17 00:00:00 2001 From: Dan Horrigan Date: Sun, 8 May 2011 11:06:44 -0400 Subject: Wrapped all common functions to check if it already exists. This allows anyone to override a lot more of the core by simply defining these function prior to loading them. --- system/core/Common.php | 61 +++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 48 insertions(+), 13 deletions(-) (limited to 'system/core/Common.php') diff --git a/system/core/Common.php b/system/core/Common.php index eb9e14425..e50f7794a 100644 --- a/system/core/Common.php +++ b/system/core/Common.php @@ -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]; } +} // ------------------------------------------------------------------------ @@ -64,6 +67,8 @@ * @access private * @return void */ +if ( ! function_exists('is_really_writable')) +{ function is_really_writable($file) { // If we're on a Unix server with safe_mode off we call is_writable @@ -96,6 +101,7 @@ fclose($fp); return TRUE; } +} // ------------------------------------------------------------------------ @@ -112,6 +118,8 @@ * @param string the class name prefix * @return object */ +if ( ! function_exists('load_class')) +{ function &load_class($class, $directory = 'libraries', $prefix = 'CI_') { static $_classes = array(); @@ -166,6 +174,7 @@ $_classes[$class] = new $name(); return $_classes[$class]; } +} // -------------------------------------------------------------------- @@ -176,6 +185,8 @@ * @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; @@ -242,6 +256,7 @@ return $_config[0] =& $config; } +} // ------------------------------------------------------------------------ @@ -251,6 +266,8 @@ * @access public * @return mixed */ +if ( ! function_exists('config_item')) +{ function config_item($item) { static $_config_item = array(); @@ -268,6 +285,7 @@ return $_config_item[$item]; } +} // ------------------------------------------------------------------------ @@ -283,12 +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', $status_code); exit; } +} // ------------------------------------------------------------------------ @@ -302,12 +323,15 @@ * @access public * @return void */ +if ( ! function_exists('show_404')) +{ function show_404($page = '', $log_error = TRUE) { $_error =& load_class('Exceptions', 'core'); $_error->show_404($page, $log_error); exit; } +} // ------------------------------------------------------------------------ @@ -320,6 +344,8 @@ * @access public * @return void */ +if ( ! function_exists('log_message')) +{ function log_message($level = 'error', $message, $php_error = FALSE) { static $_log; @@ -332,6 +358,7 @@ $_log =& load_class('Log'); $_log->write_log($level, $message, $php_error); } +} // ------------------------------------------------------------------------ @@ -343,6 +370,8 @@ * @param string * @return void */ +if ( ! function_exists('set_status_header')) +{ function set_status_header($code = 200, $text = '') { $stati = array( @@ -417,6 +446,7 @@ header("HTTP/1.1 {$code} {$text}", TRUE, $code); } } +} // -------------------------------------------------------------------- @@ -434,6 +464,8 @@ * @access private * @return void */ +if ( ! function_exists('_exception_handler')) +{ function _exception_handler($severity, $message, $filepath, $line) { // We don't bother with "strict" notices since they tend to fill up @@ -463,19 +495,22 @@ $_error->log_exception($severity, $message, $filepath, $line); } +} - // -------------------------------------------------------------------- - - /** - * Remove Invisible Characters - * - * This prevents sandwiching null characters - * between ascii characters, like Java\0script. - * - * @access public - * @param string - * @return string - */ +// -------------------------------------------------------------------- + +/** + * Remove Invisible Characters + * + * This prevents sandwiching null characters + * between ascii characters, like Java\0script. + * + * @access public + * @param string + * @return string + */ +if ( ! function_exists('remove_invisible_characters')) +{ function remove_invisible_characters($str, $url_encoded = TRUE) { $non_displayables = array(); @@ -499,7 +534,7 @@ return $str; } - +} /* End of file Common.php */ /* Location: ./system/core/Common.php */ \ No newline at end of file -- cgit v1.2.3-24-g4f1b From 37f4b9caa02783e06dd7c5318200113409a0deb1 Mon Sep 17 00:00:00 2001 From: Derek Jones Date: Fri, 1 Jul 2011 17:56:50 -0500 Subject: backed out 648b42a75739, which was a NON-trivial whitespace commit. It broke the Typography class's string replacements, for instance --- system/core/Common.php | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) (limited to 'system/core/Common.php') diff --git a/system/core/Common.php b/system/core/Common.php index eb9e14425..d1e8e77e9 100644 --- a/system/core/Common.php +++ b/system/core/Common.php @@ -1,4 +1,4 @@ -show_php_error($severity, $message, $filepath, $line); } - // Should we log the error? No? We're done... + // Should we log the error? No? We're done... if (config_item('log_threshold') == 0) { return; @@ -479,16 +479,16 @@ function remove_invisible_characters($str, $url_encoded = TRUE) { $non_displayables = array(); - + // every control character except newline (dec 10) // carriage return (dec 13), and horizontal tab (dec 09) - + if ($url_encoded) { $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 -- cgit v1.2.3-24-g4f1b