1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (https://nette.org)
  5:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  6:  */
  7: 
  8: namespace Nette\DI\Config\Adapters;
  9: 
 10: use Nette;
 11: use Nette\DI\Config\Helpers;
 12: 
 13: 
 14: /**
 15:  * Reading and generating INI files.
 16:  *
 17:  * @author     David Grudl
 18:  */
 19: class IniAdapter extends Nette\Object implements Nette\DI\Config\IAdapter
 20: {
 21:     /** @internal */
 22:     const INHERITING_SEPARATOR = '<', // child < parent
 23:         KEY_SEPARATOR = '.', // key nesting key1.key2.key3
 24:         ESCAPED_KEY_SEPARATOR = '..',
 25:         RAW_SECTION = '!';
 26: 
 27: 
 28:     /**
 29:      * Reads configuration from INI file.
 30:      * @param  string  file name
 31:      * @return array
 32:      * @throws Nette\InvalidStateException
 33:      */
 34:     public function load($file)
 35:     {
 36:         $ini = @parse_ini_file($file, TRUE); // intentionally @
 37:         if ($ini === FALSE) {
 38:             $error = error_get_last();
 39:             throw new Nette\InvalidStateException("parse_ini_file(): $error[message]");
 40:         }
 41: 
 42:         $data = array();
 43:         foreach ($ini as $secName => $secData) {
 44:             if (is_array($secData)) { // is section?
 45:                 if (substr($secName, -1) === self::RAW_SECTION) {
 46:                     $secName = substr($secName, 0, -1);
 47:                 } else { // process key nesting separator (key1.key2.key3)
 48:                     $tmp = array();
 49:                     foreach ($secData as $key => $val) {
 50:                         $cursor = & $tmp;
 51:                         $key = str_replace(self::ESCAPED_KEY_SEPARATOR, "\xFF", $key);
 52:                         foreach (explode(self::KEY_SEPARATOR, $key) as $part) {
 53:                             $part = str_replace("\xFF", self::KEY_SEPARATOR, $part);
 54:                             if (!isset($cursor[$part]) || is_array($cursor[$part])) {
 55:                                 $cursor = & $cursor[$part];
 56:                             } else {
 57:                                 throw new Nette\InvalidStateException("Invalid key '$key' in section [$secName] in file '$file'.");
 58:                             }
 59:                         }
 60:                         $cursor = $val;
 61:                     }
 62:                     $secData = $tmp;
 63:                 }
 64: 
 65:                 $parts = explode(self::INHERITING_SEPARATOR, $secName);
 66:                 if (count($parts) > 1) {
 67:                     $secName = trim($parts[0]);
 68:                     $secData[Helpers::EXTENDS_KEY] = trim($parts[1]);
 69:                 }
 70:             }
 71: 
 72:             $cursor = & $data; // nesting separator in section name
 73:             foreach (explode(self::KEY_SEPARATOR, $secName) as $part) {
 74:                 if (!isset($cursor[$part]) || is_array($cursor[$part])) {
 75:                     $cursor = & $cursor[$part];
 76:                 } else {
 77:                     throw new Nette\InvalidStateException("Invalid section [$secName] in file '$file'.");
 78:                 }
 79:             }
 80: 
 81:             if (is_array($secData) && is_array($cursor)) {
 82:                 $secData = Helpers::merge($secData, $cursor);
 83:             }
 84: 
 85:             $cursor = $secData;
 86:         }
 87: 
 88:         return $data;
 89:     }
 90: 
 91: 
 92:     /**
 93:      * Generates configuration in INI format.
 94:      * @return string
 95:      */
 96:     public function dump(array $data)
 97:     {
 98:         $output = array();
 99:         foreach ($data as $name => $secData) {
100:             if (!is_array($secData)) {
101:                 $output = array();
102:                 self::build($data, $output, '');
103:                 break;
104:             }
105:             if ($parent = Helpers::takeParent($secData)) {
106:                 $output[] = "[$name " . self::INHERITING_SEPARATOR . " $parent]";
107:             } else {
108:                 $output[] = "[$name]";
109:             }
110:             self::build($secData, $output, '');
111:             $output[] = '';
112:         }
113:         return "; generated by Nette\n\n" . implode(PHP_EOL, $output);
114:     }
115: 
116: 
117:     /**
118:      * Recursive builds INI list.
119:      * @return void
120:      */
121:     private static function build($input, & $output, $prefix)
122:     {
123:         foreach ($input as $key => $val) {
124:             $key = str_replace(self::KEY_SEPARATOR, self::ESCAPED_KEY_SEPARATOR, $key);
125:             if (is_array($val)) {
126:                 self::build($val, $output, $prefix . $key . self::KEY_SEPARATOR);
127: 
128:             } elseif (is_bool($val)) {
129:                 $output[] = "$prefix$key = " . ($val ? 'true' : 'false');
130: 
131:             } elseif (is_numeric($val)) {
132:                 $output[] = "$prefix$key = $val";
133: 
134:             } elseif (is_string($val)) {
135:                 $output[] = "$prefix$key = \"$val\"";
136: 
137:             } else {
138:                 throw new Nette\InvalidArgumentException(sprintf("The '%s' item must be scalar or array, %s given.", $prefix . $key, gettype($val)));
139:             }
140:         }
141:     }
142: 
143: }
144: