nutools/lib/ulib/support/php/json_build.php

#!/usr/bin/php
<?php # -*- coding: utf-8 mode: php -*- vim:sw=2:sts=2:et:ai:si:sta:fenc=utf-8

function fix_value($value) {
  if ($value === "true") return true;
  elseif ($value === "false") return false;
  elseif ($value === "null") return null;
  else return $value;
}
function setp(&$array, $keys, $value) {
  if (is_array($keys)) $keys = implode(".", $keys);
  $keys = explode(".", $keys);
  $last = count($keys) - 1;
  $i = 0;
  if ($array === null) $array = array();
  $current =& $array;
  foreach ($keys as $key) {
    if ($i == $last) break;
    if (!array_key_exists($key, $current)) $current[$key] = array();
    if (!is_array($current[$key])) $current[$key] = array($current[$key]);
    $current =& $current[$key];
    $i++;
  }
  if ($key === "") {
    $current[] = $value;
  } else {
    $current[$key] = $value;
  }
}

$data = array();
$empty = true;
for ($i = 1; $i < $argc; $i++) {
  $namevalue = $argv[$i];
  if (preg_match('/(.*?)=(.*)/', $namevalue, $ms)) {
    $name = $ms[1];
    $value = fix_value($ms[2]);
    setp($data, $name, $value);
  } else {
    $value = fix_value($namevalue);
    $data[] = $value;
  }
  $empty = false;
}

$options = JSON_NUMERIC_CHECK;
if ($empty) $options += JSON_FORCE_OBJECT;
echo json_encode($data, $options);