1 files changed, 66 insertions, 0 deletions
diff --git a/core/fxcrt/include/fx_arb.h b/core/fxcrt/include/fx_arb.h
new file mode 100644
index 0000000000..6a0af83150
--- /dev/null
+++ b/core/fxcrt/include/fx_arb.h
@@ -0,0 +1,66 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef CORE_FXCRT_INCLUDE_FX_ARB_H_
+#define CORE_FXCRT_INCLUDE_FX_ARB_H_
+
+#include "core/fxcrt/include/fx_system.h"
+#include "core/fxcrt/include/fx_ucd.h"
+
+class IFX_ArabicChar;
+
+struct FX_ARBFORMTABLE {
+  uint16_t wIsolated;
+  uint16_t wFinal;
+  uint16_t wInitial;
+  uint16_t wMedial;
+};
+
+struct FX_ARAALEF {
+  uint16_t wAlef;
+  uint16_t wIsolated;
+};
+
+struct FX_ARASHADDA {
+  uint16_t wShadda;
+  uint16_t wIsolated;
+};
+
+const FX_ARBFORMTABLE* FX_GetArabicFormTable(FX_WCHAR unicode);
+FX_WCHAR FX_GetArabicFromAlefTable(FX_WCHAR alef);
+FX_WCHAR FX_GetArabicFromShaddaTable(FX_WCHAR shadda);
+
+enum FX_ARBPOSITION {
+  FX_ARBPOSITION_Isolated = 0,
+  FX_ARBPOSITION_Final,
+  FX_ARBPOSITION_Initial,
+  FX_ARBPOSITION_Medial,
+};
+
+class IFX_ArabicChar {
+ public:
+  static IFX_ArabicChar* Create();
+  virtual ~IFX_ArabicChar() {}
+  virtual void Release() = 0;
+  virtual FX_BOOL IsArabicChar(FX_WCHAR wch) const = 0;
+  virtual FX_BOOL IsArabicFormChar(FX_WCHAR wch) const = 0;
+  virtual FX_WCHAR GetFormChar(FX_WCHAR wch,
+                               FX_WCHAR prev = 0,
+                               FX_WCHAR next = 0) const = 0;
+  virtual FX_WCHAR GetFormChar(const CFX_Char* cur,
+                               const CFX_Char* prev,
+                               const CFX_Char* next) const = 0;
+};
+
+void FX_BidiLine(CFX_WideString& wsText, int32_t iBaseLevel = 0);
+void FX_BidiLine(CFX_TxtCharArray& chars,
+                 int32_t iCount,
+                 int32_t iBaseLevel = 0);
+void FX_BidiLine(CFX_RTFCharArray& chars,
+                 int32_t iCount,
+                 int32_t iBaseLevel = 0);
+
+#endif  // CORE_FXCRT_INCLUDE_FX_ARB_H_