зеркало из https://github.com/mozilla/gecko-dev.git
140 строки
4.2 KiB
C
140 строки
4.2 KiB
C
|
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
||
|
* ***** 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 Corporation code.
|
||
|
*
|
||
|
* The Initial Developer of the Original Code is Mozilla Corporation.
|
||
|
* Portions created by the Initial Developer are Copyright (C) 2009-2010
|
||
|
* the Initial Developer. All Rights Reserved.
|
||
|
*
|
||
|
* Contributor(s):
|
||
|
* Jonathan Kew <jfkthame@gmail.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 NS_UNICODEPROPERTIES_H
|
||
|
#define NS_UNICODEPROPERTIES_H
|
||
|
|
||
|
#include "prtypes.h"
|
||
|
#include "nsIUGenCategory.h"
|
||
|
|
||
|
namespace mozilla {
|
||
|
|
||
|
namespace unicode {
|
||
|
|
||
|
extern nsIUGenCategory::nsUGenCategory sDetailedToGeneralCategory[];
|
||
|
|
||
|
PRUint32 GetMirroredChar(PRUint32 aCh);
|
||
|
|
||
|
PRUint8 GetCombiningClass(PRUint32 aCh);
|
||
|
|
||
|
// returns the detailed General Category in terms of HB_UNICODE_* values
|
||
|
PRUint8 GetGeneralCategory(PRUint32 aCh);
|
||
|
|
||
|
// returns the simplified Gen Category as defined in nsIUGenCategory
|
||
|
inline nsIUGenCategory::nsUGenCategory GetGenCategory(PRUint32 aCh) {
|
||
|
return sDetailedToGeneralCategory[GetGeneralCategory(aCh)];
|
||
|
}
|
||
|
|
||
|
PRUint8 GetEastAsianWidth(PRUint32 aCh);
|
||
|
|
||
|
PRInt32 GetScriptCode(PRUint32 aCh);
|
||
|
|
||
|
PRUint32 GetScriptTagForCode(PRInt32 aScriptCode);
|
||
|
|
||
|
bool IsClusterExtender(PRUint32 aCh, PRUint8 aCategory);
|
||
|
|
||
|
inline bool IsClusterExtender(PRUint32 aCh) {
|
||
|
return IsClusterExtender(aCh, GetGeneralCategory(aCh));
|
||
|
}
|
||
|
|
||
|
enum HSType {
|
||
|
HST_NONE = 0x00,
|
||
|
HST_L = 0x01,
|
||
|
HST_V = 0x02,
|
||
|
HST_T = 0x04,
|
||
|
HST_LV = 0x03,
|
||
|
HST_LVT = 0x07
|
||
|
};
|
||
|
|
||
|
HSType GetHangulSyllableType(PRUint32 aCh);
|
||
|
|
||
|
// Case mappings for the full Unicode range;
|
||
|
// note that it may be worth testing for ASCII chars and taking
|
||
|
// a separate fast-path before calling these, in perf-critical places
|
||
|
PRUint32 GetUppercase(PRUint32 aCh);
|
||
|
PRUint32 GetLowercase(PRUint32 aCh);
|
||
|
PRUint32 GetTitlecaseForLower(PRUint32 aCh); // maps LC to titlecase, UC unchanged
|
||
|
PRUint32 GetTitlecaseForAll(PRUint32 aCh); // maps both UC and LC to titlecase
|
||
|
|
||
|
enum ShapingType {
|
||
|
SHAPING_DEFAULT = 0x0001,
|
||
|
SHAPING_ARABIC = 0x0002,
|
||
|
SHAPING_HEBREW = 0x0004,
|
||
|
SHAPING_HANGUL = 0x0008,
|
||
|
SHAPING_MONGOLIAN = 0x0010,
|
||
|
SHAPING_INDIC = 0x0020,
|
||
|
SHAPING_THAI = 0x0040
|
||
|
};
|
||
|
|
||
|
PRInt32 ScriptShapingType(PRInt32 aScriptCode);
|
||
|
|
||
|
// A simple iterator for a string of PRUnichar codepoints that advances
|
||
|
// by Unicode grapheme clusters
|
||
|
class ClusterIterator
|
||
|
{
|
||
|
public:
|
||
|
ClusterIterator(const PRUnichar* aText, PRUint32 aLength)
|
||
|
: mPos(aText), mLimit(aText + aLength)
|
||
|
#ifdef DEBUG
|
||
|
, mText(aText)
|
||
|
#endif
|
||
|
{ }
|
||
|
|
||
|
operator const PRUnichar* () const {
|
||
|
return mPos;
|
||
|
}
|
||
|
|
||
|
bool AtEnd() const {
|
||
|
return mPos >= mLimit;
|
||
|
}
|
||
|
|
||
|
void Next();
|
||
|
|
||
|
private:
|
||
|
const PRUnichar* mPos;
|
||
|
const PRUnichar* mLimit;
|
||
|
#ifdef DEBUG
|
||
|
const PRUnichar* mText;
|
||
|
#endif
|
||
|
};
|
||
|
|
||
|
} // end namespace unicode
|
||
|
|
||
|
} // end namespace mozilla
|
||
|
|
||
|
#endif /* NS_UNICODEPROPERTIES_H */
|