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22c87d2bf7
- Add i18n/ module: imgui_i18n.h (Tr() macro + stub when disabled), imgui_i18n.cpp (lookup table, Meyers singleton, placeholder substitution), locale/zh_CN.cpp (Simplified Chinese translation table), tools/extract_strings.py (helper to extract translatable strings) - Opt-in via IMGUI_DEMO_ENABLE_I18N build flag; without it Tr(s) expands to (s) at compile time with zero overhead and no extra dependencies - See i18n/README.md for integration guide and how to add a new language
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
// i18n/imgui_i18n.cpp
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#include "imgui_i18n.h"
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#include <unordered_map>
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#include <string>
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namespace imgui_i18n {
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// Meyers Singleton — 保证跨编译单元 static initializer 调用时已初始化（避免 SIOF）
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static std::string& locale() {
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static std::string s;
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return s;
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}
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static std::unordered_map<std::string, std::unordered_map<std::string, std::string>>& tables() {
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static std::unordered_map<std::string, std::unordered_map<std::string, std::string>> s;
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return s;
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}
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void setLocale(const char* loc) {
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locale() = loc ? loc : "";
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}
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const char* getLocale() {
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return locale().c_str();
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}
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const char* translate(const char* key) {
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if (!key) return "";
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if (locale().empty()) return key; // English fast path
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auto it = tables().find(locale());
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if (it == tables().end()) return key;
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auto it2 = it->second.find(key);
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if (it2 == it->second.end()) return key;
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return it2->second.c_str();
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}
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std::string fmt(const char* key, std::initializer_list<std::string> args) {
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std::string result = translate(key);
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int i = 1;
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for (const auto& arg : args) {
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std::string ph = "$" + std::to_string(i++);
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size_t pos;
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while ((pos = result.find(ph)) != std::string::npos)
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result.replace(pos, ph.size(), arg);
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}
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return result;
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}
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void registerLocale(
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const char* loc,
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std::initializer_list<std::pair<const char*, const char*>> entries)
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{
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// 注意：registerLocale 必须在第一次调用 translate() 之前全部完成（通常由 static initializer 保证）
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// 注册完成后不可再追加，否则 unordered_map rehash 会使已返回的 c_str() 指针失效
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auto& table = tables()[loc];
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for (const auto& e : entries)
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table[e.first] = e.second;
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}
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} // namespace imgui_i18n
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