<?php
if (!defined('_GNUBOARD_'))
  exit;

// http://tinsology.net/2011/04/php-json_encode-and-json_decode-alternatives/

if (!function_exists('json_encode')) {
  function json_encode($a = false)
  {
    // Some basic debugging to ensure we have something returned
    if (is_null($a))
      return 'null';
    if ($a === false)
      return 'false';
    if ($a === true)
      return 'true';
    if (is_scalar($a)) {
      if (is_float($a)) {
        // Always use '.' for floats.
        return floatval(str_replace(',', '.', strval($a)));
      }
      if (is_string($a)) {
        static $jsonReplaces = array(array('\\', '/', "\n", "\t", "\r", "\b", "\f", '"'), array('\\\\', '\\/', '\\n', '\\t', '\\r', '\\b', '\\f', '\"'));
        return '"' . str_replace($jsonReplaces[0], $jsonReplaces[1], $a) . '"';
      } else
        return $a;
    }
    $isList = true;
    for ($i = 0, reset($a); true; $i++) {
      if (key($a) !== $i) {
        $isList = false;
        break;
      }
    }
    $result = array();
    if ($isList) {
      foreach ($a as $v)
        $result[] = json_encode($v);
      return '[' . join(',', $result) . ']';
    } else {
      foreach ($a as $k => $v)
        $result[] = json_encode($k) . ':' . json_encode($v);
      return '{' . join(',', $result) . '}';
    }
  }
}

if (!function_exists('json_decode')) {
  function json_decode($json)
  {
    $comment = false;
    $out = '$x=';
    for ($i = 0; $i < strlen($json); $i++) {
      if (!$comment) {
        if (($json[$i] == '{') || ($json[$i] == '['))
          $out .= ' array(';
        else if (($json[$i] == '}') || ($json[$i] == ']'))
          $out .= ')';
        else if ($json[$i] == ':')
          $out .= '=>';
        else
          $out .= $json[$i];
      } else
        $out .= $json[$i];
      if ($json[$i] == '"' && $json[($i - 1)] != "\\")
        $comment = !$comment;
    }
    eval ($out . ';');
    return $x;
  }
}