sal/osl/unx/osxlocale.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/types.h>
  21 #include <assert.h>
  22
  23 #include <premac.h>
  24 #ifndef IOS
  25 #include <CoreServices/CoreServices.h>
  26 #endif
  27 #include <CoreFoundation/CoreFoundation.h>
  28 #include <postmac.h>
  29
  30 #include <rtl/ustrbuf.hxx>
  31
  32 #include "nlsupport.hxx"
  33
  34 namespace
  35 {
  36     template <typename T>
  37     class CFGuard
  38     {
  39     public:
  40         explicit CFGuard(T& rT) : rT_(rT) {}
  41         ~CFGuard() { if (rT_) CFRelease(rT_); }
  42     private:
  43         T& rT_;
  44     };
  45
  46     typedef CFGuard<CFArrayRef> CFArrayGuard;
  47     typedef CFGuard<CFStringRef> CFStringGuard;
  48     typedef CFGuard<CFPropertyListRef> CFPropertyListGuard;
  49
  50     /** Get the current process locale from system
  51     */
  52     CFStringRef getProcessLocale()
  53     {
  54         CFPropertyListRef pref = CFPreferencesCopyAppValue(CFSTR("AppleLanguages"), kCFPreferencesCurrentApplication);
  55         CFPropertyListGuard proplGuard(pref);
  56
  57         if (pref == nullptr) // return fallback value 'en_US'
  58              return CFStringCreateWithCString(kCFAllocatorDefault, "en_US", kCFStringEncodingASCII);
  59
  60         CFStringRef sref = (CFGetTypeID(pref) == CFArrayGetTypeID()) ? static_cast<CFStringRef>(CFArrayGetValueAtIndex(static_cast<CFArrayRef>(pref), 0)) : static_cast<CFStringRef>(pref);
  61
  62         return CFLocaleCreateCanonicalLocaleIdentifierFromString(kCFAllocatorDefault, sref);
  63     }
  64
  65     void append(OUStringBuffer & buffer, CFStringRef string) {
  66         CFIndex n = CFStringGetLength(string);
  67         CFStringGetCharacters(
  68             string, CFRangeMake(0, n),
  69             reinterpret_cast<UniChar *>(buffer.appendUninitialized(n)));
  70     }
  71 }
  72
  73 /** Grab current locale from system.
  74 */
  75 OUString macosx_getLocale()
  76 {
  77     CFStringRef sref = getProcessLocale();
  78     CFStringGuard sGuard(sref);
  79
  80     assert(sref != nullptr && "osxlocale.cxx: getProcessLocale must return a non-NULL value");
  81
  82     // split the string into substrings; the first two (if there are two) substrings
  83     // are language and country
  84     CFArrayRef subs = CFStringCreateArrayBySeparatingStrings(nullptr, sref, CFSTR("-"));
  85     CFArrayGuard arrGuard(subs);
  86
  87     OUStringBuffer buf;
  88     append(buf, static_cast<CFStringRef>(CFArrayGetValueAtIndex(subs, 0)));
  89
  90     // country also available? Assumption: if the array contains more than one
  91     // value the second value is always the country!
  92     if (CFArrayGetCount(subs) > 1)
  93     {
  94         buf.append("_");
  95         append(buf, static_cast<CFStringRef>(CFArrayGetValueAtIndex(subs, 1)));
  96     }
  97     // Append 'UTF-8' to the locale because the macOS file
  98     // system interface is UTF-8 based and sal tries to determine
  99     // the file system locale from the locale information
 100     buf.append(".UTF-8");
 101     return buf.makeStringAndClear();
 102 }
 103
 104 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */