135 lines
3.6 KiB
C++
135 lines
3.6 KiB
C++
// Copyright (c) Microsoft Corporation.
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// Licensed under the MIT license.
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#include "precomp.h"
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#include "UnicodeStorage.hpp"
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#include "CharRow.hpp"
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// Routine Description:
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// - assignment operator. will store extended glyph data in a separate storage location
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// Arguments:
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// - chars - the glyph data to store
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void CharRowCellReference::operator=(const std::wstring_view chars)
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{
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THROW_HR_IF(E_INVALIDARG, chars.empty());
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if (chars.size() == 1)
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{
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_cellData().Char() = chars.front();
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_cellData().DbcsAttr().SetGlyphStored(false);
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}
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else
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{
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auto& storage = _parent.GetUnicodeStorage();
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const auto key = _parent.GetStorageKey(_index);
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storage.StoreGlyph(key, { chars.cbegin(), chars.cend() });
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_cellData().DbcsAttr().SetGlyphStored(true);
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}
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}
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// Routine Description:
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// - implicit conversion to vector<wchar_t> operator.
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// Return Value:
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// - std::vector<wchar_t> of the glyph data in the referenced cell
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CharRowCellReference::operator std::wstring_view() const
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{
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return _glyphData();
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}
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// Routine Description:
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// - The CharRowCell this object "references"
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// Return Value:
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// - ref to the CharRowCell
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CharRowCell& CharRowCellReference::_cellData()
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{
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return _parent._data.at(_index);
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}
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// Routine Description:
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// - The CharRowCell this object "references"
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// Return Value:
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// - ref to the CharRowCell
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const CharRowCell& CharRowCellReference::_cellData() const
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{
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return _parent._data.at(_index);
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}
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// Routine Description:
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// - the glyph data of the referenced cell
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// Return Value:
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// - the glyph data
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std::wstring_view CharRowCellReference::_glyphData() const
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{
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if (_cellData().DbcsAttr().IsGlyphStored())
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{
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const auto& text = _parent.GetUnicodeStorage().GetText(_parent.GetStorageKey(_index));
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return { text.data(), text.size() };
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}
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else
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{
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return { &_cellData().Char(), 1 };
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}
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}
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// Routine Description:
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// - gets read-only iterator to the beginning of the glyph data
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// Return Value:
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// - iterator of the glyph data
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CharRowCellReference::const_iterator CharRowCellReference::begin() const
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{
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if (_cellData().DbcsAttr().IsGlyphStored())
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{
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return _parent.GetUnicodeStorage().GetText(_parent.GetStorageKey(_index)).data();
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}
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else
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{
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return &_cellData().Char();
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}
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}
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// Routine Description:
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// - get read-only iterator to the end of the glyph data
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// Return Value:
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// - end iterator of the glyph data
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CharRowCellReference::const_iterator CharRowCellReference::end() const
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{
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if (_cellData().DbcsAttr().IsGlyphStored())
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{
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const auto& chars = _parent.GetUnicodeStorage().GetText(_parent.GetStorageKey(_index));
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return chars.data() + chars.size();
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}
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else
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{
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return &_cellData().Char() + 1;
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}
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}
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bool operator==(const CharRowCellReference& ref, const std::vector<wchar_t>& glyph)
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{
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const DbcsAttribute& dbcsAttr = ref._cellData().DbcsAttr();
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if (glyph.size() == 1 && dbcsAttr.IsGlyphStored())
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{
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return false;
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}
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else if (glyph.size() > 1 && !dbcsAttr.IsGlyphStored())
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{
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return false;
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}
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else if (glyph.size() == 1 && !dbcsAttr.IsGlyphStored())
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{
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return ref._cellData().Char() == glyph.front();
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}
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else
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{
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const auto& chars = ref._parent.GetUnicodeStorage().GetText(ref._parent.GetStorageKey(ref._index));
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return chars == glyph;
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}
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}
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bool operator==(const std::vector<wchar_t>& glyph, const CharRowCellReference& ref)
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{
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return ref == glyph;
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}
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