git.m6w6.name Git - m6w6/merry/blob - lib/merry/Config.php

   1 <?php
   2
   3 /**
   4  * merry\Config
   5  *
   6  * @author Michael Wallner <mike@php.net>
   7  */
   8 namespace merry;
   9
  10 /**
  11  * A merry config container
  12  *
  13  * @see https://github.com/m6w6/merry
  14  * @package merry\Config
  15  */
  16 class Config extends Container
  17 {
  18         /**
  19          * Create a new configuration container
  20          * @param array $array the configuration array
  21          * @param string $section the section to use (i.e. first level key)
  22          * @param string $section_sep a separator for section extension
  23          * @param string $key_sep a separator for key traversal
  24          */
  25         public function __construct(array $array = null, $section = null, $section_sep = ":", $key_sep = ".") {
  26                 if (isset($section) && strlen($section_sep)) {
  27                         $array = $this->combine($array, $section_sep)[$section];
  28                 }
  29                 if ($array) {
  30                         $config = array();
  31
  32                         if (strlen($key_sep)) {
  33                                 foreach ($array as $key => $val) {
  34                                         $this->walk($config, $key, $val, $key_sep);
  35                                 }
  36                         }
  37                         parent::__construct($config, false);
  38                 }
  39         }
  40
  41         /**
  42          * Combine individual sections with their parent section
  43          * @param array $array the config array
  44          * @param string $section_sep the section extension separator
  45          * @return array merged sections
  46          */
  47         protected function combine($array, $section_sep) {
  48                 foreach ($array as $section_spec => $settings) {
  49                         $section_spec = array_map("trim", explode($section_sep, $section_spec));
  50                         if (count($section_spec) > 1) {
  51                                 $sections[$section_spec[0]] = array_merge(
  52                                         $sections[$section_spec[1]],
  53                                         $settings
  54                                 );
  55                         } else {
  56                                 $sections[$section_spec[0]] = $settings;
  57                         }
  58                 }
  59                 return $sections;
  60         }
  61
  62         /**
  63          * Walk a key split by the key separator into an array up and set the
  64          * respective value on the leaf
  65          * @param mixed $ptr current leaf pointer in the array
  66          * @param string $key the array key
  67          * @param mixed $val the value to set
  68          * @param string $key_sep the key separator for traversal
  69          */
  70         protected function walk(&$ptr, $key, $val, $key_sep) {
  71                 foreach (explode($key_sep, $key) as $sub) {
  72                         $ptr = &$ptr[$sub];
  73                 }
  74                 $ptr = $val;
  75         }
  76 }
  77
  78 /* vim: set noet ts=4 sw=4: */