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      1 /*
      2  * Copyright (C) 2007 Apple Inc.  All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "Language.h"
     28 
     29 #include "CString.h"
     30 #include "PlatformString.h"
     31 
     32 namespace WebCore {
     33 
     34 static String localeInfo(LCTYPE localeType, const String& fallback)
     35 {
     36     LANGID langID = GetUserDefaultUILanguage();
     37     int localeChars = GetLocaleInfo(langID, localeType, 0, 0);
     38     if (!localeChars)
     39         return fallback;
     40     UChar* localeNameBuf;
     41     String localeName = String::createUninitialized(localeChars, localeNameBuf);
     42     localeChars = GetLocaleInfo(langID, localeType, localeNameBuf, localeChars);
     43     if (!localeChars)
     44         return fallback;
     45     if (localeName.isEmpty())
     46         return fallback;
     47 
     48     return localeName;
     49 }
     50 
     51 String defaultLanguage()
     52 {
     53     static String computedDefaultLanguage;
     54     if (!computedDefaultLanguage.isEmpty())
     55         return computedDefaultLanguage;
     56 
     57     String languageName = localeInfo(LOCALE_SISO639LANGNAME, "en");
     58     String countryName = localeInfo(LOCALE_SISO3166CTRYNAME, String());
     59 
     60     if (countryName.isEmpty())
     61         computedDefaultLanguage = languageName;
     62     else
     63         computedDefaultLanguage = String::format("%s-%s", languageName.latin1().data(), countryName.latin1().data());
     64 
     65     return computedDefaultLanguage;
     66 }
     67 
     68 }
     69