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/*
* Ricochet - A minimalist CLI web browser for fast, distraction-free navigation.
* Copyright (C) 2026 Richard Qin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include "ricochet/tui/position.hh"
#include <cstddef>
#include <cstdint>
#include <string>
#include <string_view>
#include <vector>
namespace ricochet::tui::detail {
enum class TextUnitKind : std::uint8_t
{
Glyph,
LineBreak,
Tab
};
enum class WordKind : std::uint8_t
{
Space,
Word,
Ideograph,
Punctuation
};
struct Grapheme
{
ByteRange bytes {};
std::wstring display {};
int columns { 1 };
TextUnitKind kind { TextUnitKind::Glyph };
WordKind word { WordKind::Punctuation };
bool break_after { false };
};
struct TextAnalysis
{
std::vector<Grapheme> graphemes {};
// Vim-style reading units: letters/numbers/underscore, punctuation runs,
// individual ideographs. Whitespace is excluded; offsets remain UTF-8 bytes.
std::vector<ByteRange> words {};
};
// Called on the UI thread in the same UTF-8 locale as Screen. ICU owns Unicode
// segmentation/properties; POSIX wcwidth owns terminal widths. No curses types.
class TextService
{
public:
explicit TextService( std::size_t glyph_capacity );
TextAnalysis analyze( std::string_view utf8, bool line_breaks, bool tabs ) const;
private:
std::size_t glyph_capacity_;
};
} // namespace ricochet::tui::detail
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