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nsUnicharUtils.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is Unicode case conversion helpers.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corp..
00019  * Portions created by the Initial Developer are Copyright (C) 2002
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Alec Flett <alecf@netscape.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either the GNU General Public License Version 2 or later (the "GPL"), or
00027  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #ifndef nsUnicharUtils_h__
00040 #define nsUnicharUtils_h__
00041 #ifndef nsAString_h___
00042 #include "nsAString.h"
00043 #endif
00044 
00045 #include "nsReadableUtils.h"
00046 
00047 #ifndef nsCharTraits_h___
00048 #include "nsCharTraits.h"
00049 #endif
00050 
00051 void ToLowerCase( nsAString& );
00052 void ToUpperCase( nsAString& );
00053 
00054 void ToLowerCase( nsASingleFragmentString& );
00055 void ToUpperCase( nsASingleFragmentString& );
00056 
00057 void ToLowerCase( nsString& );
00058 void ToUpperCase( nsString& );
00059 
00060 void ToLowerCase( const nsAString& aSource, nsAString& aDest );
00061 void ToUpperCase( const nsAString& aSource, nsAString& aDest );
00062 
00063 class nsCaseInsensitiveStringComparator
00064     : public nsStringComparator
00065   {
00066     public:
00067       virtual int operator()( const PRUnichar*, const PRUnichar*, PRUint32 aLength ) const;
00068       virtual int operator()( PRUnichar, PRUnichar ) const;
00069   };
00070 
00071 inline PRBool CaseInsensitiveFindInReadable( const nsAString& aPattern,
00072                                              nsAString::const_iterator& aSearchStart,
00073                                              nsAString::const_iterator& aSearchEnd ) {
00074   return FindInReadable(aPattern, aSearchStart, aSearchEnd,
00075                         nsCaseInsensitiveStringComparator());
00076 }
00077 
00078 inline PRBool CaseInsensitiveFindInReadable( const nsAString& aPattern,
00079                                              const nsAString& aHay ) {
00080   nsAString::const_iterator searchBegin, searchEnd;
00081   return FindInReadable(aPattern, 
00082                         aHay.BeginReading(searchBegin),
00083                         aHay.EndReading(searchEnd),
00084                         nsCaseInsensitiveStringComparator());
00085 }
00086 
00087 PRUnichar ToUpperCase(PRUnichar);
00088 PRUnichar ToLowerCase(PRUnichar);
00089 
00090 inline PRBool IsUpperCase(PRUnichar c) {
00091     return ToLowerCase(c) != c;
00092 }
00093 
00094 inline PRBool IsLowerCase(PRUnichar c) {
00095     return ToUpperCase(c) != c;
00096 }
00097 
00098 /* (0x3131u <= (u) && (u) <= 0x318eu) => Hangul Compatibility Jamo */
00099 /* (0xac00u <= (u) && (u) <= 0xd7a3u) => Hangul Syllables          */
00100 #define IS_CJ_CHAR(u) \
00101          ((0x2e80u <= (u) && (u) <= 0x312fu) || \
00102           (0x3190u <= (u) && (u) <= 0xabffu) || \
00103           (0xf900u <= (u) && (u) <= 0xfaffu) || \
00104           (0xff00u <= (u) && (u) <= 0xffefu) )
00105 
00106 #endif  /* nsUnicharUtils_h__ */