[b354002] | 1 | <?php |
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| 2 | |
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| 3 | /** |
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| 4 | * @file |
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| 5 | * Multiple language handling functionality. |
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| 6 | */ |
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| 7 | |
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| 8 | /** |
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| 9 | * Choose a language for the page, based on language negotiation settings. |
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| 10 | */ |
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| 11 | function language_initialize() { |
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| 12 | global $user; |
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| 13 | |
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| 14 | // Configured presentation language mode. |
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| 15 | $mode = variable_get('language_negotiation', LANGUAGE_NEGOTIATION_NONE); |
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| 16 | // Get a list of enabled languages. |
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| 17 | $languages = language_list('enabled'); |
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| 18 | $languages = $languages[1]; |
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| 19 | |
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| 20 | switch ($mode) { |
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| 21 | case LANGUAGE_NEGOTIATION_NONE: |
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| 22 | return language_default(); |
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| 23 | |
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| 24 | case LANGUAGE_NEGOTIATION_DOMAIN: |
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| 25 | foreach ($languages as $language) { |
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| 26 | $parts = parse_url($language->domain); |
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| 27 | if (!empty($parts['host']) && ($_SERVER['HTTP_HOST'] == $parts['host'])) { |
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| 28 | return $language; |
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| 29 | } |
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| 30 | } |
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| 31 | return language_default(); |
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| 32 | |
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| 33 | case LANGUAGE_NEGOTIATION_PATH_DEFAULT: |
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| 34 | case LANGUAGE_NEGOTIATION_PATH: |
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| 35 | // $_GET['q'] might not be available at this time, because |
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| 36 | // path initialization runs after the language bootstrap phase. |
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| 37 | $args = isset($_GET['q']) ? explode('/', $_GET['q']) : array(); |
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| 38 | $prefix = array_shift($args); |
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| 39 | // Search prefix within enabled languages. |
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| 40 | foreach ($languages as $language) { |
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| 41 | if (!empty($language->prefix) && $language->prefix == $prefix) { |
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| 42 | // Rebuild $GET['q'] with the language removed. |
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| 43 | $_GET['q'] = implode('/', $args); |
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| 44 | return $language; |
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| 45 | } |
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| 46 | } |
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| 47 | if ($mode == LANGUAGE_NEGOTIATION_PATH_DEFAULT) { |
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| 48 | // If we did not found the language by prefix, choose the default. |
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| 49 | return language_default(); |
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| 50 | } |
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| 51 | break; |
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| 52 | } |
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| 53 | |
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| 54 | // User language. |
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| 55 | if ($user->uid && isset($languages[$user->language])) { |
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| 56 | return $languages[$user->language]; |
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| 57 | } |
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| 58 | |
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| 59 | // Browser accept-language parsing. |
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| 60 | if ($language = language_from_browser()) { |
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| 61 | return $language; |
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| 62 | } |
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| 63 | |
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| 64 | // Fall back on the default if everything else fails. |
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| 65 | return language_default(); |
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| 66 | } |
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| 67 | |
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| 68 | /** |
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| 69 | * Identify language from the Accept-language HTTP header we got. |
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| 70 | */ |
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| 71 | function language_from_browser() { |
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| 72 | // Specified by the user via the browser's Accept Language setting |
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| 73 | // Samples: "hu, en-us;q=0.66, en;q=0.33", "hu,en-us;q=0.5" |
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| 74 | $browser_langs = array(); |
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| 75 | |
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| 76 | if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) { |
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| 77 | $browser_accept = explode(",", $_SERVER['HTTP_ACCEPT_LANGUAGE']); |
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| 78 | for ($i = 0; $i < count($browser_accept); $i++) { |
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| 79 | // The language part is either a code or a code with a quality. |
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| 80 | // We cannot do anything with a * code, so it is skipped. |
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| 81 | // If the quality is missing, it is assumed to be 1 according to the RFC. |
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| 82 | if (preg_match("!([a-z-]+)(;q=([0-9\\.]+))?!", trim($browser_accept[$i]), $found)) { |
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| 83 | $browser_langs[$found[1]] = (isset($found[3]) ? (float) $found[3] : 1.0); |
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| 84 | } |
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| 85 | } |
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| 86 | } |
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| 87 | |
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| 88 | // Order the codes by quality |
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| 89 | arsort($browser_langs); |
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| 90 | |
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| 91 | // Try to find the first preferred language we have |
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| 92 | $languages = language_list('enabled'); |
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| 93 | foreach ($browser_langs as $langcode => $q) { |
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| 94 | if (isset($languages['1'][$langcode])) { |
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| 95 | return $languages['1'][$langcode]; |
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| 96 | } |
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| 97 | } |
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| 98 | } |
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| 99 | |
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| 100 | /** |
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| 101 | * Rewrite URL's with language based prefix. Parameters are the same |
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| 102 | * as those of the url() function. |
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| 103 | */ |
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| 104 | function language_url_rewrite(&$path, &$options) { |
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| 105 | global $language; |
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| 106 | |
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| 107 | // Only modify relative (insite) URLs. |
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| 108 | if (empty($options['external'])) { |
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| 109 | |
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| 110 | // Language can be passed as an option, or we go for current language. |
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| 111 | if (!isset($options['language'])) { |
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| 112 | $options['language'] = $language; |
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| 113 | } |
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| 114 | |
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| 115 | switch (variable_get('language_negotiation', LANGUAGE_NEGOTIATION_NONE)) { |
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| 116 | case LANGUAGE_NEGOTIATION_NONE: |
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| 117 | // No language dependent path allowed in this mode. |
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| 118 | unset($options['language']); |
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| 119 | break; |
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| 120 | |
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| 121 | case LANGUAGE_NEGOTIATION_DOMAIN: |
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| 122 | if ($options['language']->domain) { |
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| 123 | // Ask for an absolute URL with our modified base_url. |
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| 124 | $options['absolute'] = TRUE; |
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| 125 | $options['base_url'] = $options['language']->domain; |
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| 126 | } |
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| 127 | break; |
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| 128 | |
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| 129 | case LANGUAGE_NEGOTIATION_PATH_DEFAULT: |
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| 130 | $default = language_default(); |
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| 131 | if ($options['language']->language == $default->language) { |
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| 132 | break; |
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| 133 | } |
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| 134 | // Intentionally no break here. |
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| 135 | |
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| 136 | case LANGUAGE_NEGOTIATION_PATH: |
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| 137 | if (!empty($options['language']->prefix)) { |
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| 138 | $options['prefix'] = $options['language']->prefix .'/'; |
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| 139 | } |
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| 140 | break; |
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| 141 | } |
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| 142 | } |
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| 143 | } |
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