pronto/core/log.php

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<?php
if(!defined('DIR_FS_LOG')) define('DIR_FS_LOG', DIR_FS_APP.DS.'log');

class Logger
{
        var $routes;
        var $files;

        function Logger($routes=null)
        {
                // A 2-D array.
                // First key is a regexp to match facility.
                // Second key is a regexp to match priority.
                // Value is a filename.
                if($routes) {
                        $this->routes = $routes;
                        return;
                }

                // Default routes - used if no routes were passed in.
                if(DEBUG !== true) {
                        // If in Production mode, ignore priority levels "debug" and "info"
                        //
                        // NB: The ! prefix is not valid in regular expressions, but we parse
                        //     it correctly here.  Don't use it elsewhere - it won't work!
                        $this->routes = array(
                                'pronto(:.*)*' => array('!(debug|info)' => 'pronto.log'),
                                'app(:.*)*'    => array('!(debug|info)' => 'app.log')
                        );
                } else {
                        // Debug mode logging -- capture all priorities
                        $this->routes = array(
                                'pronto(:.*)*' => array('.*' => 'pronto.log'),
                                'app(:.*)*'    => array('.*' => 'app.log')
                        );
                }
        }

        function add_routes($routes)
        {
                foreach($routes as $k=>$v) $this->routes[$k] = $v;
        }

        function clear_routes()
        {
                $this->routes = array();
        }


        function msg($facility, $priority, $message)
        {
                foreach($this->routes as $fac=>$v) {
                        $m = array();
                        if(!$this->_preg($fac, $facility, $m)) continue;
                        for($i = 1; $i < count($m); $i++) $v = str_replace("\\$i", $m[$i], $v);
                        if(is_array($v)) {
                                foreach($v as $pri=>$fn) {
                                        $m = array();
                                        if(!$this->_preg($pri, $priority, $m)) continue;
                                        for($i = 1; $i < count($m); $i++) $fn = str_replace("\\$i", $m[$i], $fn);
                                        $this->_log_msg($fn, $facility, $priority, $message);
                                }
                        } else {
                                $this->_log_msg($v, $facility, $priority, $message);
                        }
                }
        }

        function _preg($re, $str, &$matches)
        {
                if(substr($re, 0, 1) == '!') {
                        $re = substr($re, 1);
                        return !preg_match("/^$re$/", $str);
                }
                return preg_match("/^$re$/", $str, $matches);
        }

        function _log_msg($filename, $facility, $priority, $message)
        {
                // silently fail if the log directory doesn't exist
                if(!is_dir(DIR_FS_LOG)) return;

                if(!is_resource($this->files[$filename])) {
                        // prepend the log directory path if the filepath is not absolute
                        $path = substr($filename, 0, 1) == DS ? $filename : DIR_FS_LOG.DS.$filename;
                        $this->files[$filename] = @fopen($path, 'a');
                        if(!is_resource($this->files[$filename])) {
                                // Undecided on how we should act here.  For now, we quietly ignore the error.
                                /*trigger_error("Cannot open log file: $path");*/
                                return;
                        }
                }
                $dt = date('Y-m-d H:i:s');
                $msg = "[$dt] [$facility.$priority] $message\n";
                fputs($this->files[$filename], $msg);
        }
}

function l() {
        $logger =& Registry::get('pronto:logger');
        if(!$logger) return;

        $args = func_get_args();
        if(count($args) == 1) {
                $facility = 'app';
                $priority = 'info';
                $message = $args[0];
        } else if(count($args) == 2) {
                $facility = 'app';
                $priority = $args[0];
                $message = $args[1];
        } else {
                $facility = $args[0];
                $priority = $args[1];
                $message  = vsprintf($args[2], array_slice($args, 3));
        }

        $logger->msg($facility, $priority, $message);
}

?>

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