Merge branch 'master' of github.com:serghey-rodin/vesta

Author: serghey-rodin

bin/v-change-user-language

@@ -19,9 +19,14 @@ source $VESTA/conf/vesta.conf
 
 
 is_language_valid() {
-    if [ ! -e "$VESTA/web/inc/i18n/$language.php" ]; then
-        echo "Error: language $language not exist"
-        log_event "$E_NOTEXIST $EVENT"
+    if ! [[ "$1" =~ ^[[:alnum:]_-]+$ ]]; then
+        echo "Error: language $1 is not valid"
+        log_event "$E_INVALID" "$EVENT"
+        exit $E_INVALID
+    fi
+    if [ ! -e "$VESTA/web/inc/i18n/$1.php" ]; then
+        echo "Error: language $1 doesn't exist"
+        log_event "$E_NOTEXIST" "$EVENT"
         exit $E_NOTEXIST
     fi
 }

web/edit/user/index.php

@@ -62,7 +62,7 @@
 $packages = json_decode(implode('', $output), true);
 unset($output);
 
-// List lanugages
+// List languages
 exec (VESTA_CMD."v-list-sys-languages json", $output, $return_var);
 $languages = json_decode(implode('', $output), true);
 unset($output);

web/inc/i18n.php

@@ -0,0 +1,112 @@
+<?php
+// Functions for internationalization
+
+/**
+ * Translates string to given language in first parameter, key given in second parameter (dynamically loads required language). Works like spritf from second parameter
+ * @global array $LANG Associative array of language pharses
+ * @return string Translated string
+ */
+function _translate() {
+    global $LANG;
+
+    $args = func_get_args();
+    $l = $args[0];
+
+    if (!$l) return 'NO LANGUAGE DEFINED';
+    $key = $args[1];
+
+    if (!isset($LANG[$l])) {
+        require_once($_SERVER['DOCUMENT_ROOT'].'/inc/i18n/'.$l.'.php');
+    }
+
+    if (!isset($LANG[$l][$key])) {
+        $text=$key;
+    } else {
+        $text=$LANG[$l][$key];
+    }
+
+    array_shift($args);
+    if (count($args)>1) {
+        $args[0] = $text;
+        return call_user_func_array("sprintf",$args);
+    } else {
+        return $text;
+    }
+}
+
+/**
+ * Translates string by a given key in first parameter to current session language. Works like sprintf
+ * @global array $LANG Associative array of language pharses
+ * @return string Translated string
+ * @see _translate()
+ */
+function __() {
+    $args = func_get_args();
+    array_unshift($args,$_SESSION['language']);
+    return call_user_func_array("_translate",$args);
+}
+
+/**
+ * Detects user language from Accept-Language HTTP header.
+ * @param string Fallback language (default: 'en')
+ * @return string Language code (such as 'en' and 'ja')
+ */
+function detect_user_language($fallback='en') {
+    static $user_lang = '';
+
+    // Already detected
+    if (!empty($user_lang)) return $user_lang;
+
+    // Check if Accept-Language header is available
+    if (!isset($_SERVER) ||
+        !isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) ||
+        !is_string($_SERVER['HTTP_ACCEPT_LANGUAGE'])
+    ) {
+        // Store result for reusing
+        $user_lang = $fallback;
+        return $user_lang;
+    }
+
+    // Sort Accept-Language by `q` value
+    $accept_langs = explode(',', preg_replace('/\s/', '', strtolower($_SERVER['HTTP_ACCEPT_LANGUAGE'])));
+    $accept_langs_sorted = [];
+    foreach ($accept_langs as $lang) {
+        $div = explode(';q=', $lang, 2);
+        if (count($div) < 2) {
+            // `q` value was not specfied
+            // -> Set default `q` value (1)
+            $div[] = '1';
+        }
+        list($code, $q) = $div;
+        if (preg_match('/^[\w\-]+$/', $code)) {
+            // Acceptable language code
+            $accept_langs_sorted[$code] = (double)$q;
+        }
+    }
+    arsort($accept_langs_sorted);
+
+    // List languages
+    exec (VESTA_CMD."v-list-sys-languages json", $output, $return_var);
+    $languages = json_decode(implode('', $output), true);
+    unset($output);
+
+    // Find best matching language
+    foreach ($accept_langs_sorted as $user_lang => $dummy) {
+        $decision = '';
+        foreach ($languages as $prov_lang) {
+            if (strlen($decision) > strlen($prov_lang)) continue;
+            if (strpos($user_lang, $prov_lang) !== false) {
+                $decision = $prov_lang;
+            }
+        }
+        if (!empty($decision)) {
+            // Store result for reusing
+            $user_lang = $decision;
+            return $user_lang;
+        }
+    }
+
+    // Store result for reusing
+    $user_lang = $fallback;
+    return $user_lang;
+}