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File: _functions.php

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  Classes of Payam Naderi  >  Loader  >  _functions.php  >  Download  
File: _functions.php
Role: Auxiliary script
Content type: text/plain
Description: Auxiliary script
Class: Loader
Autoload classes using several approaches
Author: By
Last change: code cleanup
Date: 4 years ago
Size: 2,291 bytes
 

Contents

Class file image Download
<?php
namespace Poirot\Loader;

    if (
defined(__FILE__.'_included'))
       
## file is included once!!
       
return;
    else
       
define(__FILE__.'_included', true);
   
   
    const
SEPARATOR_NAMESPACES = '\\';

   
/**
     * Watch File Exists Within Given Resource
     *
     * @param string $name requested name to resolve
     * @param string $resource may find within this resource of match
     * @param string $match match with this namespace
     * @param string $postfix append to resource match usually file extension
     *
     * @return string resolved path to file if exists
     */
   
function funcWatchFileExists($name, $resource, $match, $postfix = null)
    {
        if (
is_file($match))
           
$pathToFile = $match;

        else {
           
## $match = 'Poirot\Loader'
            ## $name = 'Poirot\Loader\ClassMapAutoloader'
            ## $maskOffClass = '\ClassMapAutoloader'
           
$maskOffClass = ($match == '*' || $match == '**')
                ?
$name
               
: substr($name, strlen($match), strlen($name));

           
## we suppose class mask must find within match
            ## so convert namespaces to directory slashes
           
$pathToFile =
               
_normalizeDir($resource)
                .
_normalizeResourceName($maskOffClass);
           
            if (
$postfix !== null) $pathToFile.=$postfix;
            if (!
file_exists($pathToFile) )
                return
false;
        }

        return
$pathToFile;
    }

   
/**
     * Normalize Directory Path
     *
     * @param string $dir
     *
     * @return string
     */
   
function _normalizeDir($dir)
    {
        static
$_c_Normalized;
       
        if (isset(
$_c_Normalized[$dir]))
            return
$_c_Normalized[$dir];
   
       
$dir = rtrim(strtr($dir, SEPARATOR_NAMESPACES, '/'), '/');
       
$_c_Normalized[$dir] = $dir;
        return
$dir;
    }

   
/**
     * Convert Class Namespace Trailing To Path
     *
     * @param string $maskOffClass
     *
     * @return string
     */
   
function _normalizeResourceName($maskOffClass)
    {
       
$maskOffClass = ltrim($maskOffClass, SEPARATOR_NAMESPACES);
        return (
$maskOffClass !== '') ? '/'. _normalizeDir($maskOffClass) : '';
    }
   

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