// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FXCRT_INCLUDE_FX_ARABIC_H_
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#define CORE_FXCRT_INCLUDE_FX_ARABIC_H_
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#include "core/fxcrt/include/fx_arb.h"
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#define FX_BIDIMAXLEVEL 61
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#define FX_BidiDirection(a) (FX_IsOdd(a) ? FX_BIDICLASS_R : FX_BIDICLASS_L)
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#define FX_BidiGetDeferredType(a) (((a) >> 4) & 0x0F)
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#define FX_BidiGetResolvedType(a) ((a)&0x0F)
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namespace pdfium {
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namespace arabic {
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bool IsArabicChar(FX_WCHAR wch);
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bool IsArabicFormChar(FX_WCHAR wch);
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FX_WCHAR GetFormChar(FX_WCHAR wch, FX_WCHAR prev = 0, FX_WCHAR next = 0);
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FX_WCHAR GetFormChar(const CFX_Char* cur,
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const CFX_Char* prev,
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const CFX_Char* next);
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} // namespace arabic
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} // namespace pdfium
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void FX_BidiReverseString(CFX_WideString& wsText,
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int32_t iStart,
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int32_t iCount);
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void FX_BidiSetDeferredRun(CFX_Int32Array& values,
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int32_t iStart,
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int32_t iCount,
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int32_t iValue);
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void FX_BidiClassify(const CFX_WideString& wsText,
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CFX_Int32Array& classes,
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FX_BOOL bWS = FALSE);
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int32_t FX_BidiResolveExplicit(int32_t iBaseLevel,
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int32_t iDirection,
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CFX_Int32Array& classes,
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CFX_Int32Array& levels,
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int32_t iStart,
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int32_t iCount,
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int32_t iNest = 0);
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enum FX_BIDIWEAKSTATE {
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FX_BIDIWEAKSTATE_xa = 0,
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FX_BIDIWEAKSTATE_xr,
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FX_BIDIWEAKSTATE_xl,
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FX_BIDIWEAKSTATE_ao,
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FX_BIDIWEAKSTATE_ro,
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FX_BIDIWEAKSTATE_lo,
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FX_BIDIWEAKSTATE_rt,
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FX_BIDIWEAKSTATE_lt,
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FX_BIDIWEAKSTATE_cn,
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FX_BIDIWEAKSTATE_ra,
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FX_BIDIWEAKSTATE_re,
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FX_BIDIWEAKSTATE_la,
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FX_BIDIWEAKSTATE_le,
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FX_BIDIWEAKSTATE_ac,
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FX_BIDIWEAKSTATE_rc,
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FX_BIDIWEAKSTATE_rs,
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FX_BIDIWEAKSTATE_lc,
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FX_BIDIWEAKSTATE_ls,
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FX_BIDIWEAKSTATE_ret,
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FX_BIDIWEAKSTATE_let,
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};
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#define FX_BWSxa FX_BIDIWEAKSTATE_xa
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#define FX_BWSxr FX_BIDIWEAKSTATE_xr
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#define FX_BWSxl FX_BIDIWEAKSTATE_xl
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#define FX_BWSao FX_BIDIWEAKSTATE_ao
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#define FX_BWSro FX_BIDIWEAKSTATE_ro
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#define FX_BWSlo FX_BIDIWEAKSTATE_lo
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#define FX_BWSrt FX_BIDIWEAKSTATE_rt
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#define FX_BWSlt FX_BIDIWEAKSTATE_lt
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#define FX_BWScn FX_BIDIWEAKSTATE_cn
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#define FX_BWSra FX_BIDIWEAKSTATE_ra
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#define FX_BWSre FX_BIDIWEAKSTATE_re
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#define FX_BWSla FX_BIDIWEAKSTATE_la
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#define FX_BWSle FX_BIDIWEAKSTATE_le
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#define FX_BWSac FX_BIDIWEAKSTATE_ac
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#define FX_BWSrc FX_BIDIWEAKSTATE_rc
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#define FX_BWSrs FX_BIDIWEAKSTATE_rs
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#define FX_BWSlc FX_BIDIWEAKSTATE_lc
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#define FX_BWSls FX_BIDIWEAKSTATE_ls
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#define FX_BWSret FX_BIDIWEAKSTATE_ret
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#define FX_BWSlet FX_BIDIWEAKSTATE_let
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enum FX_BIDIWEAKACTION {
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FX_BIDIWEAKACTION_IX = 0x100,
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FX_BIDIWEAKACTION_XX = 0x0F,
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FX_BIDIWEAKACTION_xxx = (0x0F << 4) + 0x0F,
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FX_BIDIWEAKACTION_xIx = 0x100 + FX_BIDIWEAKACTION_xxx,
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FX_BIDIWEAKACTION_xxN = (0x0F << 4) + FX_BIDICLASS_ON,
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FX_BIDIWEAKACTION_xxE = (0x0F << 4) + FX_BIDICLASS_EN,
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FX_BIDIWEAKACTION_xxA = (0x0F << 4) + FX_BIDICLASS_AN,
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FX_BIDIWEAKACTION_xxR = (0x0F << 4) + FX_BIDICLASS_R,
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FX_BIDIWEAKACTION_xxL = (0x0F << 4) + FX_BIDICLASS_L,
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FX_BIDIWEAKACTION_Nxx = (FX_BIDICLASS_ON << 4) + 0x0F,
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FX_BIDIWEAKACTION_Axx = (FX_BIDICLASS_AN << 4) + 0x0F,
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FX_BIDIWEAKACTION_ExE = (FX_BIDICLASS_EN << 4) + FX_BIDICLASS_EN,
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FX_BIDIWEAKACTION_NIx = (FX_BIDICLASS_ON << 4) + 0x0F + 0x100,
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FX_BIDIWEAKACTION_NxN = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_ON,
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FX_BIDIWEAKACTION_NxR = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_R,
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FX_BIDIWEAKACTION_NxE = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_EN,
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FX_BIDIWEAKACTION_AxA = (FX_BIDICLASS_AN << 4) + FX_BIDICLASS_AN,
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FX_BIDIWEAKACTION_NxL = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_L,
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FX_BIDIWEAKACTION_LxL = (FX_BIDICLASS_L << 4) + FX_BIDICLASS_L,
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FX_BIDIWEAKACTION_xIL = (0x0F << 4) + FX_BIDICLASS_L + 0x100,
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FX_BIDIWEAKACTION_AxR = (FX_BIDICLASS_AN << 4) + FX_BIDICLASS_R,
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FX_BIDIWEAKACTION_Lxx = (FX_BIDICLASS_L << 4) + 0x0F,
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};
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#define FX_BWAIX FX_BIDIWEAKACTION_IX
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#define FX_BWAXX FX_BIDIWEAKACTION_XX
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#define FX_BWAxxx FX_BIDIWEAKACTION_xxx
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#define FX_BWAxIx FX_BIDIWEAKACTION_xIx
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#define FX_BWAxxN FX_BIDIWEAKACTION_xxN
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#define FX_BWAxxE FX_BIDIWEAKACTION_xxE
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#define FX_BWAxxA FX_BIDIWEAKACTION_xxA
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#define FX_BWAxxR FX_BIDIWEAKACTION_xxR
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#define FX_BWAxxL FX_BIDIWEAKACTION_xxL
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#define FX_BWANxx FX_BIDIWEAKACTION_Nxx
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#define FX_BWAAxx FX_BIDIWEAKACTION_Axx
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#define FX_BWAExE FX_BIDIWEAKACTION_ExE
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#define FX_BWANIx FX_BIDIWEAKACTION_NIx
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#define FX_BWANxN FX_BIDIWEAKACTION_NxN
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#define FX_BWANxR FX_BIDIWEAKACTION_NxR
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#define FX_BWANxE FX_BIDIWEAKACTION_NxE
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#define FX_BWAAxA FX_BIDIWEAKACTION_AxA
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#define FX_BWANxL FX_BIDIWEAKACTION_NxL
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#define FX_BWALxL FX_BIDIWEAKACTION_LxL
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#define FX_BWAxIL FX_BIDIWEAKACTION_xIL
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#define FX_BWAAxR FX_BIDIWEAKACTION_AxR
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#define FX_BWALxx FX_BIDIWEAKACTION_Lxx
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void FX_BidiResolveWeak(int32_t iBaseLevel,
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CFX_Int32Array& classes,
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CFX_Int32Array& levels);
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enum FX_BIDINEUTRALSTATE {
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FX_BIDINEUTRALSTATE_r = 0,
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FX_BIDINEUTRALSTATE_l,
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FX_BIDINEUTRALSTATE_rn,
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FX_BIDINEUTRALSTATE_ln,
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FX_BIDINEUTRALSTATE_a,
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FX_BIDINEUTRALSTATE_na,
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};
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#define FX_BNSr FX_BIDINEUTRALSTATE_r
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#define FX_BNSl FX_BIDINEUTRALSTATE_l
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#define FX_BNSrn FX_BIDINEUTRALSTATE_rn
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#define FX_BNSln FX_BIDINEUTRALSTATE_ln
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#define FX_BNSa FX_BIDINEUTRALSTATE_a
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#define FX_BNSna FX_BIDINEUTRALSTATE_na
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enum FX_BIDINEUTRALACTION {
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FX_BIDINEUTRALACTION_nL = FX_BIDICLASS_L,
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FX_BIDINEUTRALACTION_En = (FX_BIDICLASS_AN << 4),
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FX_BIDINEUTRALACTION_Rn = (FX_BIDICLASS_R << 4),
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FX_BIDINEUTRALACTION_Ln = (FX_BIDICLASS_L << 4),
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FX_BIDINEUTRALACTION_In = FX_BIDIWEAKACTION_IX,
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FX_BIDINEUTRALACTION_LnL = (FX_BIDICLASS_L << 4) + FX_BIDICLASS_L,
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};
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#define FX_BNAnL FX_BIDINEUTRALACTION_nL
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#define FX_BNAEn FX_BIDINEUTRALACTION_En
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#define FX_BNARn FX_BIDINEUTRALACTION_Rn
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#define FX_BNALn FX_BIDINEUTRALACTION_Ln
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#define FX_BNAIn FX_BIDINEUTRALACTION_In
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#define FX_BNALnL FX_BIDINEUTRALACTION_LnL
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int32_t FX_BidiGetDeferredNeutrals(int32_t iAction, int32_t iLevel);
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int32_t FX_BidiGetResolvedNeutrals(int32_t iAction);
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void FX_BidiResolveNeutrals(int32_t iBaseLevel,
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CFX_Int32Array& classes,
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const CFX_Int32Array& levels);
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void FX_BidiResolveImplicit(const CFX_Int32Array& classes,
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CFX_Int32Array& levels);
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void FX_BidiResolveWhitespace(int32_t iBaseLevel,
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const CFX_Int32Array& classes,
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CFX_Int32Array& levels);
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int32_t FX_BidiReorderLevel(int32_t iBaseLevel,
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CFX_WideString& wsText,
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const CFX_Int32Array& levels,
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int32_t iStart,
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FX_BOOL bReverse = FALSE);
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void FX_BidiReorder(int32_t iBaseLevel,
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CFX_WideString& wsText,
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const CFX_Int32Array& levels);
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#endif // CORE_FXCRT_INCLUDE_FX_ARABIC_H_
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