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127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Corporation code.
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*
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* The Initial Developer of the Original Code is Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2009-2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Jonathan Kew <jfkthame@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef NS_UNICODEPROPERTIES_H
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#define NS_UNICODEPROPERTIES_H
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#include "prtypes.h"
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#include "nsIUGenCategory.h"
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namespace mozilla {
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namespace unicode {
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extern nsIUGenCategory::nsUGenCategory sDetailedToGeneralCategory[];
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PRUint32 GetMirroredChar(PRUint32 aCh);
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PRUint8 GetCombiningClass(PRUint32 aCh);
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// returns the detailed General Category in terms of HB_UNICODE_* values
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PRUint8 GetGeneralCategory(PRUint32 aCh);
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// returns the simplified Gen Category as defined in nsIUGenCategory
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inline nsIUGenCategory::nsUGenCategory GetGenCategory(PRUint32 aCh) {
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return sDetailedToGeneralCategory[GetGeneralCategory(aCh)];
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}
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PRUint8 GetEastAsianWidth(PRUint32 aCh);
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PRInt32 GetScriptCode(PRUint32 aCh);
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PRUint32 GetScriptTagForCode(PRInt32 aScriptCode);
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bool IsClusterExtender(PRUint32 aCh, PRUint8 aCategory);
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inline bool IsClusterExtender(PRUint32 aCh) {
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return IsClusterExtender(aCh, GetGeneralCategory(aCh));
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}
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enum HSType {
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HST_NONE = 0x00,
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HST_L = 0x01,
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HST_V = 0x02,
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HST_T = 0x04,
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HST_LV = 0x03,
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HST_LVT = 0x07
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};
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HSType GetHangulSyllableType(PRUint32 aCh);
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enum ShapingType {
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SHAPING_DEFAULT = 0x0001,
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SHAPING_ARABIC = 0x0002,
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SHAPING_HEBREW = 0x0004,
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SHAPING_HANGUL = 0x0008,
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SHAPING_MONGOLIAN = 0x0010,
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SHAPING_INDIC = 0x0020,
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SHAPING_THAI = 0x0040
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};
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PRInt32 ScriptShapingType(PRInt32 aScriptCode);
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// A simple iterator for a string of PRUnichar codepoints that advances
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// by Unicode grapheme clusters
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class ClusterIterator
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{
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public:
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ClusterIterator(const PRUnichar* aText, PRUint32 aLength)
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: mText(aText), mLimit(aText + aLength), mPos(aText)
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{ }
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operator const PRUnichar* () const {
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return mPos;
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}
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bool AtEnd() const {
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return mPos >= mLimit;
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}
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void Next();
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private:
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const PRUnichar* mText;
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const PRUnichar* mLimit;
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const PRUnichar* mPos;
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};
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} // end namespace unicode
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} // end namespace mozilla
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#endif /* NS_UNICODEPROPERTIES_H */
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