include/i18nutil/scriptchangescanner.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <i18nutil/i18nutildllapi.h>
  11 #include <rtl/ustring.hxx>
  12 #include <optional>
  13 #include <memory>
  14
  15 namespace i18nutil
  16 {
  17 struct DirectionChange
  18 {
  19     sal_Int32 m_nStartIndex = 0;
  20     sal_Int32 m_nEndIndex = 0;
  21     sal_uInt8 m_nLevel = 0;
  22     bool m_bHasEmbeddedStrongLTR = false;
  23 };
  24
  25 struct ScriptChange
  26 {
  27     sal_Int32 m_nStartIndex = 0;
  28     sal_Int32 m_nEndIndex = 0;
  29     sal_Int16 m_nScriptType = 0;
  30 };
  31
  32 class I18NUTIL_DLLPUBLIC DirectionChangeScanner
  33 {
  34 public:
  35     virtual ~DirectionChangeScanner() = default;
  36
  37     virtual bool AtEnd() const = 0;
  38     virtual void Advance() = 0;
  39     virtual DirectionChange Peek() const = 0;
  40     virtual sal_uInt8 GetLevelAt(sal_Int32 nIndex) const = 0;
  41     virtual void Reset() = 0;
  42 };
  43
  44 class I18NUTIL_DLLPUBLIC ScriptChangeScanner
  45 {
  46 public:
  47     virtual ~ScriptChangeScanner() = default;
  48
  49     virtual bool AtEnd() const = 0;
  50     virtual void Advance() = 0;
  51     virtual ScriptChange Peek() const = 0;
  52 };
  53
  54 I18NUTIL_DLLPUBLIC std::unique_ptr<DirectionChangeScanner>
  55 MakeDirectionChangeScanner(const OUString& rWord, sal_uInt8 nInitialDirection);
  56
  57 I18NUTIL_DLLPUBLIC std::unique_ptr<ScriptChangeScanner>
  58 MakeScriptChangeScanner(const OUString& rWord, sal_Int16 nDefaultScriptType,
  59                         DirectionChangeScanner& rDirScanner);
  60 }
  61
  62 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */