Fabio
c36510c21e
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41 lines
1.6 KiB
C++
41 lines
1.6 KiB
C++
#pragma once
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#include <optional>
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#include <string>
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#include <string_view>
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namespace engine::text {
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// Returns true if the language tag indicates Cantonese/Yue. Covers
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// "yue", "yue-Hant", "zh-yue", "cantonese", "zh-HK", "zh-MO" variants.
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// Comparison is case-insensitive and accepts '-' / '_' separators.
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bool is_cantonese_language(std::string_view language) noexcept;
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// Returns true if the UTF-8 text contains at least one Traditional
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// character that would be converted by convert_traditional_to_simplified().
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bool contains_traditional_characters(std::string_view text);
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// Convert Traditional Chinese characters to Simplified Chinese.
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// Uses OpenCC TSCharacters.txt mapping (3222 single-char entries).
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// Characters without a mapping are left unchanged. Invalid UTF-8
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// throws std::runtime_error (label: "chinese variant text").
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std::string convert_traditional_to_simplified(std::string_view text);
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// If `language` is Cantonese/Yue, returns text unchanged.
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// Otherwise converts Traditional -> Simplified.
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// Empty / "auto" / "zh" etc. are treated as non-Cantonese (convert).
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std::string maybe_convert_traditional_to_simplified(
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std::string_view text,
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std::string_view language);
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// Helper for optional language: std::nullopt / empty means convert.
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inline std::string maybe_convert_traditional_to_simplified_opt(
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std::string_view text,
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const std::optional<std::string> & language) {
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if (!language.has_value() || language->empty()) {
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return convert_traditional_to_simplified(text);
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}
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return maybe_convert_traditional_to_simplified(text, std::string_view(*language));
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}
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} // namespace engine::text
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