gecko-dev/xpcom/io/nsNativeCharsetUtils.h
2014-05-14 23:15:46 +03:00

64 lines
2.6 KiB
C

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsNativeCharsetUtils_h__
#define nsNativeCharsetUtils_h__
/*****************************************************************************\
* *
* **** NOTICE **** *
* *
* *** THESE ARE NOT GENERAL PURPOSE CONVERTERS *** *
* *
* NS_CopyNativeToUnicode / NS_CopyUnicodeToNative should only be used *
* for converting *FILENAMES* between native and unicode. They are not *
* designed or tested for general encoding converter use. *
* *
\*****************************************************************************/
/**
* thread-safe conversion routines that do not depend on uconv libraries.
*/
nsresult NS_CopyNativeToUnicode(const nsACString& aInput, nsAString& aOutput);
nsresult NS_CopyUnicodeToNative(const nsAString& aInput, nsACString& aOutput);
/*
* This function indicates whether the character encoding used in the file
* system (more exactly what's used for |GetNativeFoo| and |SetNativeFoo|
* of |nsIFile|) is UTF-8 or not. Knowing that helps us avoid an
* unncessary encoding conversion in some cases. For instance, to get the leaf
* name in UTF-8 out of nsIFile, we can just use |GetNativeLeafName| rather
* than using |GetLeafName| and converting the result to UTF-8 if the file
* system encoding is UTF-8.
* On Unix (but not on Mac OS X), it depends on the locale and is not known
* in advance (at the compilation time) so that this function needs to be
* a real function. On Mac OS X it's always UTF-8 while on Windows
* and other platforms (e.g. OS2), it's never UTF-8.
*/
#if defined(XP_UNIX) && !defined(XP_MACOSX) && !defined(ANDROID)
bool NS_IsNativeUTF8();
#else
inline bool
NS_IsNativeUTF8()
{
#if defined(XP_MACOSX) || defined(ANDROID)
return true;
#else
return false;
#endif
}
#endif
/**
* internal
*/
void NS_StartupNativeCharsetUtils();
void NS_ShutdownNativeCharsetUtils();
#endif // nsNativeCharsetUtils_h__