// 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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#include "core/fxcrt/fx_unicode.h"
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#include "core/fxcrt/fx_ucddata.h"
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namespace {
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constexpr uint32_t kMirrorBits = 23;
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constexpr uint32_t kMirrorMask = 0x1FFU << kMirrorBits;
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wchar_t GetMirrorChar(wchar_t wch, uint32_t dwProps) {
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uint32_t dwTemp = (dwProps & kMirrorMask);
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if (dwTemp == kMirrorMask)
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return wch;
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size_t idx = dwTemp >> kMirrorBits;
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return idx < kFXTextLayoutBidiMirrorSize ? kFXTextLayoutBidiMirror[idx] : wch;
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}
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} // namespace
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uint32_t FX_GetUnicodeProperties(wchar_t wch) {
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size_t idx = static_cast<size_t>(wch);
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if (idx < kTextLayoutCodePropertiesSize)
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return kTextLayoutCodeProperties[idx];
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return 0;
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}
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wchar_t FX_GetMirrorChar(wchar_t wch) {
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return GetMirrorChar(wch, FX_GetUnicodeProperties(wch));
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}
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#ifdef PDF_ENABLE_XFA
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wchar_t FX_GetMirrorChar(wchar_t wch, uint32_t dwProps) {
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return GetMirrorChar(wch, dwProps);
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}
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#endif // PDF_ENABLE_XFA
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