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annotate Language.inc @ 57:fd3dd497eba6

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Documentation cleanup.
author Tom Fredrik Blenning Klaussen <bfg@blenning.no>
date Thu, 11 Oct 2012 02:05:09 +0200
parents 0f1e08cdfff2
children 74f7b64bdb78
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1 <?php
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2 /**
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3 * @file
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4 * Functionality for determining language use
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5 */
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6 class Language {
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7 /**
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8 * Extracts the accepted languages from the GET query, sorted by
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9 * preference(q-value).
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10 *
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11 * @return associative array of language codes with q value
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12 */
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13 function accepted() {
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14 $langs = array();
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16 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
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17 // break up string into pieces (languages and q factors)
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18 preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse);
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19
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20 if (count($lang_parse[1])) {
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21 // create a list like "en" => 0.8
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22 $langs = array_combine($lang_parse[1], $lang_parse[4]);
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24 // set default to 1 for any without q factor
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25 foreach ($langs as $lang => $val) {
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26 if ($val === '') $langs[$lang] = 1;
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27 }
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29 // sort list based on value
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30 arsort($langs, SORT_NUMERIC);
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31 }
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32 }
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33 return $langs;
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34 }
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35
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36 /**
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37 * From the list of desired languages, pick the best which we can serve.
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38 *
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39 * @param $default what to choose if no match could be found.
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40 */
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41 static function prefer($default)
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42 {
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43 $language = $default;
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44 $langs = self::accepted();
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45 if ($langs) {
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46 foreach ($langs as $l => $val) {
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47 if (file_exists($l)) {
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48 $language = $l;
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49 break;
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50 }
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51 }
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52 }
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53 return $language;
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54 }
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55 }
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56 ?>