gecko/intl/unicharutil/util/nsUnicharUtils.h
Justin Lebar ext:(%2C%20Kyle%20Huey%20%3Cme%40kylehuey.com%3E) 8b20bfbcec Bug 145975 - Implement nsCaseInsensitiveUTF8StringComparator r=smontagu
--HG--
extra : rebase_source : 8e5d63a6a5ca50b6e95a80421ad96a1d4a52ae77
2010-08-31 18:03:40 -07:00

166 lines
5.9 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 Unicode case conversion helpers.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corp..
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Alec Flett <alecf@netscape.com>
* Benjamin Smedberg <benjamin@smedbergs.us>
*
* 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 nsUnicharUtils_h__
#define nsUnicharUtils_h__
#include "nsStringGlue.h"
/* (0x3131u <= (u) && (u) <= 0x318eu) => Hangul Compatibility Jamo */
/* (0xac00u <= (u) && (u) <= 0xd7a3u) => Hangul Syllables */
#define IS_CJ_CHAR(u) \
((0x2e80u <= (u) && (u) <= 0x312fu) || \
(0x3190u <= (u) && (u) <= 0xabffu) || \
(0xf900u <= (u) && (u) <= 0xfaffu) || \
(0xff00u <= (u) && (u) <= 0xffefu) )
void ToLowerCase(nsAString&);
void ToUpperCase(nsAString&);
void ToLowerCase(const nsAString& aSource, nsAString& aDest);
void ToUpperCase(const nsAString& aSource, nsAString& aDest);
PRUnichar ToLowerCase(PRUnichar);
PRUnichar ToUpperCase(PRUnichar);
PRUnichar ToTitleCase(PRUnichar);
void ToLowerCase(const PRUnichar*, PRUnichar*, PRUint32);
void ToUpperCase(const PRUnichar*, PRUnichar*, PRUint32);
inline PRBool IsUpperCase(PRUnichar c) {
return ToLowerCase(c) != c;
}
inline PRBool IsLowerCase(PRUnichar c) {
return ToUpperCase(c) != c;
}
#ifdef MOZILLA_INTERNAL_API
class nsCaseInsensitiveStringComparator : public nsStringComparator
{
public:
virtual PRInt32 operator() (const PRUnichar*,
const PRUnichar*,
PRUint32,
PRUint32) const;
};
class nsCaseInsensitiveUTF8StringComparator : public nsCStringComparator
{
public:
virtual PRInt32 operator() (const char*,
const char*,
PRUint32,
PRUint32) const;
};
class nsCaseInsensitiveStringArrayComparator
{
public:
template<class A, class B>
PRBool Equals(const A& a, const B& b) const {
return a.Equals(b, nsCaseInsensitiveStringComparator());
}
};
class nsASCIICaseInsensitiveStringComparator : public nsStringComparator
{
public:
virtual int operator() (const PRUnichar*,
const PRUnichar*,
PRUint32,
PRUint32) const;
};
inline PRBool
CaseInsensitiveFindInReadable(const nsAString& aPattern,
nsAString::const_iterator& aSearchStart,
nsAString::const_iterator& aSearchEnd)
{
return FindInReadable(aPattern, aSearchStart, aSearchEnd,
nsCaseInsensitiveStringComparator());
}
inline PRBool
CaseInsensitiveFindInReadable(const nsAString& aPattern,
const nsAString& aHay)
{
nsAString::const_iterator searchBegin, searchEnd;
return FindInReadable(aPattern, aHay.BeginReading(searchBegin),
aHay.EndReading(searchEnd),
nsCaseInsensitiveStringComparator());
}
#endif // MOZILLA_INTERNAL_API
PRInt32
CaseInsensitiveCompare(const PRUnichar *a, const PRUnichar *b, PRUint32 len);
PRInt32
CaseInsensitiveCompare(const char* aLeft, const char* aRight,
PRUint32 aLeftBytes, PRUint32 aRightBytes);
/**
* This function determines whether the UTF-8 sequence pointed to by aLeft is
* case-insensitively-equal to the UTF-8 sequence pointed to by aRight.
*
* aLeftEnd marks the first memory location past aLeft that is not part of
* aLeft; aRightEnd similarly marks the end of aRight.
*
* The function assumes that aLeft < aLeftEnd and aRight < aRightEnd.
*
* The function stores the addresses of the next characters in the sequence
* into aLeftNext and aRightNext. It's up to the caller to make sure that the
* returned pointers are valid -- i.e. the function may return aLeftNext >=
* aLeftEnd or aRightNext >= aRightEnd.
*
* If the function encounters invalid text, it sets aErr to true and returns
* false, possibly leaving aLeftNext and aRightNext uninitialized. If the
* function returns true, aErr is guaranteed to be false and both aLeftNext and
* aRightNext are guaranteed to be initialized.
*/
PRBool
CaseInsensitiveUTF8CharsEqual(const char* aLeft, const char* aRight,
const char* aLeftEnd, const char* aRightEnd,
const char** aLeftNext, const char** aRightNext,
PRBool* aErr);
#endif /* nsUnicharUtils_h__ */