gecko-dev/xpcom/io/nsNativeCharsetUtils.h

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C

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Darin Fisher <darin@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#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.
*/
#if defined(XP_WIN)
#include "prtypes.h"
NS_COM PRInt32 NS_ConvertAtoW(const char *aStrInA, int aBufferSize,
PRUnichar *aStrOutW);
// For path names, the default char cannot be '?', so we use '_' instead.
NS_COM PRInt32 NS_ConvertWtoA(const PRUnichar *aStrInW, int aBufferSizeOut,
char *aStrOutA, const char *aDefault="_");
#endif
NS_COM nsresult NS_CopyNativeToUnicode(const nsACString &input, nsAString &output);
NS_COM nsresult NS_CopyUnicodeToNative(const nsAString &input, nsACString &output);
/*
* This function indicates whether the character encoding used in the file
* system (more exactly what's used for |GetNativeFoo| and |SetNativeFoo|
* of |nsILocalFile|) 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 nsILocalFile, 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 and BeOS, 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)
NS_COM PRBool NS_IsNativeUTF8();
#else
inline PRBool NS_IsNativeUTF8()
{
#if defined(XP_MACOSX) || defined(XP_BEOS)
return PR_TRUE;
#else
return PR_FALSE;
#endif
}
#endif
/**
* internal
*/
void NS_StartupNativeCharsetUtils();
void NS_ShutdownNativeCharsetUtils();
#endif // nsNativeCharsetUtils_h__