1 | <?php |
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2 | /** |
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3 | * User: execut |
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4 | * Date: 01.08.16 |
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5 | * Time: 17:09 |
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6 | */ |
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7 | |||
8 | namespace execut\import\components; |
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9 | |||
10 | |||
11 | use yii\base\Component; |
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12 | |||
13 | class EncodingDetector extends Component |
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14 | { |
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15 | public $source = null; |
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16 | public $expected = null; |
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17 | public function detect() { |
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18 | if ($this->source === $this->expected) { |
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19 | return []; |
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20 | } |
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21 | |||
22 | $encodings = self::getEncodingsList(); |
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23 | foreach ($encodings as $fromEncoding) { |
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24 | foreach ($encodings as $toEncoding) { |
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25 | if ($fromEncoding === $toEncoding) { |
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26 | continue; |
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27 | } |
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28 | |||
29 | if ($result = $this->tryConvert($this->source, $this->expected, $fromEncoding, $toEncoding)) { |
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30 | return $result; |
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31 | } |
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32 | } |
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33 | } |
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34 | } |
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35 | |||
36 | protected function tryConvert($source, $expected, $from, $to, $isTryLevel = true) { |
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37 | $currentResult = \mb_convert_encoding($source, $to, $from); |
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38 | if ($currentResult === $expected) { |
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39 | return [$from, $to]; |
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40 | } |
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41 | |||
42 | if (!$isTryLevel) { |
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43 | return; |
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44 | } |
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45 | |||
46 | $encodings = self::getEncodingsList(); |
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47 | foreach ($encodings as $fromEncoding) { |
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48 | foreach ($encodings as $toEncoding) { |
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49 | if ($fromEncoding === $toEncoding) { |
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50 | continue; |
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51 | } |
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52 | |||
53 | if ($result = $this->tryConvert($currentResult, $this->expected, $fromEncoding, $toEncoding, false)) { |
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54 | return $result; |
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55 | } |
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56 | } |
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57 | } |
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58 | } |
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59 | |||
60 | public static function getEncodingsList() { |
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61 | $encodings = explode(', ', 'KOI8-R, KOI8-U, UTF-8, UTF-16, CP1251, CP1252, ISO-8859-1'); |
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62 | return $encodings; |
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63 | $encodings = \mb_list_encodings(); |
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64 | unset($encodings[0]); |
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65 | unset($encodings[1]); |
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66 | return $encodings; |
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67 | } |
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68 | } |