voku\helper\shim\Xml

Complexity

Total Complexity

11

Size/Duplication

Total Lines	65
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	0

Test Coverage

Coverage

97.5%

Importance

Changes	1
Bugs	0	Features	1

2 Methods

Rating	Name	Duplication	Size	Complexity
C	utf8_decode()	0	28	7
B	utf8_encode()	0	23	4

<?php

/*
 * Copyright (C) 2013 Nicolas Grekas - p@tchwork.com
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the (at your option):
 * Apache License v2.0 (http://apache.org/licenses/LICENSE-2.0.txt), or
 * GNU General Public License v2.0 (http://gnu.org/licenses/gpl-2.0.txt).
 */

namespace voku\helper\shim;

/**
 * Class Xml for utf8_encode / utf8_decode
 *
 * @package voku\helper\shim
 */
class Xml
{
  /**
   * @param string $s
   *
   * @return string
   */
  public static function utf8_encode($s)
  {
    $s .= $s;
    $len = strlen($s);

    for ($i = $len >> 1, $j = 0; $i < $len; ++$i, ++$j) {
      switch (true) {
        case $s[$i] < "\x80":
          $s[$j] = $s[$i];
          break;
        case $s[$i] < "\xC0":
          $s[$j] = "\xC2";
          $s[++$j] = $s[$i];
          break;
        default:
          $s[$j] = "\xC3";
          $s[++$j] = chr(ord($s[$i]) - 64);
          break;
      }
    }

    return substr($s, 0, $j);
  }

  /**
   * @param string $s
   *
   * @return string
   */
  public static function utf8_decode($s)
  {
    $s .= '';
    $len = strlen($s);

    for ($i = 0, $j = 0; $i < $len; ++$i, ++$j) {
      switch ($s[$i] & "\xF0") {
        case "\xC0":
        case "\xD0":
          $c = (ord($s[$i] & "\x1F") << 6) | ord($s[++$i] & "\x3F");
          $s[$j] = $c < 256 ? chr($c) : '?';
          break;

        /** @noinspection PhpMissingBreakStatementInspection */
        case "\xF0":

There must be a comment when fall-through is intentional in a non-empty case body

          ++$i;
        case "\xE0":
          $s[$j] = '?';
          $i += 2;
          break;

        default:
          $s[$j] = $s[$i];
      }
    }

    return substr($s, 0, $j);
  }
}