MrPiglr
9dddce666d
- Forked from Godot Engine 4.7-dev (MIT License) - Rebranded to AeThex Engine with cyan/purple theme - Added AI-powered development assistant module - Integrated Claude API for code completion & error fixing - Custom hexagon logo and branding - Multi-platform CI/CD (Windows, Linux, macOS) - Built Linux editor binary (151MB) - Complete source code with all customizations Tech Stack: - C++ game engine core - AI Module: Claude 3.5 Sonnet integration - Build: SCons, 14K+ source files - License: MIT (Godot) + Custom (AeThex features) Ready for Windows build via GitHub Actions!
161 lines
4.9 KiB
C++
161 lines
4.9 KiB
C++
// © 2025 and later: Unicode, Inc. and others.
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// License & terms of use: https://www.unicode.org/copyright.html
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// utfstring.h
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// created: 2025jul18 Markus W. Scherer
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#ifndef __UTFSTRING_H__
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#define __UTFSTRING_H__
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#include "unicode/utypes.h"
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#if U_SHOW_CPLUSPLUS_API || U_SHOW_CPLUSPLUS_HEADER_API || !defined(UTYPES_H)
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#include "unicode/utf16.h"
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/**
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* \file
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* \brief C++ header-only API: C++ string helper functions.
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*/
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#ifndef U_HIDE_DRAFT_API
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namespace U_HEADER_ONLY_NAMESPACE {
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namespace utfstring {
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// Write code points to strings -------------------------------------------- ***
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#ifndef U_IN_DOXYGEN
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namespace prv {
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// This function, and the public wrappers,
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// want to be U_FORCE_INLINE but the gcc-debug-build-and-test CI check failed with
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// error: ‘always_inline’ function might not be inlinable [-Werror=attributes]
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template<typename StringClass, bool validate>
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inline StringClass &appendCodePoint(StringClass &s, uint32_t c) {
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using Unit = typename StringClass::value_type;
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if constexpr (sizeof(Unit) == 1) {
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// UTF-8: Similar to U8_APPEND().
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if (c <= 0x7f) {
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s.push_back(static_cast<Unit>(c));
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} else {
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Unit buf[4];
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uint8_t len;
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if (c <= 0x7ff) {
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len = 2;
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buf[2] = (c >> 6) | 0xc0;
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} else {
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if (validate ?
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c < 0xd800 ||
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(c < 0xe000 || c > 0x10ffff ? (c = 0xfffd, true) : c <= 0xffff) :
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c <= 0xffff) {
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len = 3;
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buf[1] = (c >> 12) | 0xe0;
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} else {
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len = 4;
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buf[0] = (c >> 18) | 0xf0;
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buf[1] = ((c >> 12) & 0x3f) | 0x80;
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}
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buf[2] = ((c >> 6) & 0x3f) | 0x80;
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}
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buf[3] = (c & 0x3f) | 0x80;
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s.append(buf + 4 - len, len);
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}
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} else if constexpr (sizeof(Unit) == 2) {
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// UTF-16: Similar to U16_APPEND().
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if (validate ?
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c < 0xd800 || (c < 0xe000 || c > 0x10ffff ? (c = 0xfffd, true) : c <= 0xffff) :
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c <= 0xffff) {
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s.push_back(static_cast<Unit>(c));
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} else {
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Unit buf[2] = { U16_LEAD(c), U16_TRAIL(c) };
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s.append(buf, 2);
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}
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} else {
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// UTF-32
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s.push_back(!validate || U_IS_SCALAR_VALUE(c) ? c : 0xfffd);
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}
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return s;
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}
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} // namespace prv
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#endif // U_IN_DOXYGEN
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#ifndef U_HIDE_DRAFT_API
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/**
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* Appends the code point to the string.
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* Appends the U+FFFD replacement character instead if c is not a scalar value.
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* See https://www.unicode.org/glossary/#unicode_scalar_value
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*
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* @tparam StringClass A version of std::basic_string (or a compatible type)
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* @param s The string to append to
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* @param c The code point to append
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* @return s
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* @draft ICU 78
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* @see U_IS_SCALAR_VALUE
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*/
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template<typename StringClass>
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inline StringClass &appendOrFFFD(StringClass &s, UChar32 c) {
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return prv::appendCodePoint<StringClass, true>(s, c);
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}
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/**
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* Appends the code point to the string.
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* The code point must be a scalar value; otherwise the behavior is undefined.
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* See https://www.unicode.org/glossary/#unicode_scalar_value
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*
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* @tparam StringClass A version of std::basic_string (or a compatible type)
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* @param s The string to append to
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* @param c The code point to append (must be a scalar value)
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* @return s
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* @draft ICU 78
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* @see U_IS_SCALAR_VALUE
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*/
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template<typename StringClass>
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inline StringClass &appendUnsafe(StringClass &s, UChar32 c) {
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return prv::appendCodePoint<StringClass, false>(s, c);
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}
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/**
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* Returns the code point as a string of code units.
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* Returns the U+FFFD replacement character instead if c is not a scalar value.
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* See https://www.unicode.org/glossary/#unicode_scalar_value
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*
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* @tparam StringClass A version of std::basic_string (or a compatible type)
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* @param c The code point
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* @return the string of c's code units
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* @draft ICU 78
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* @see U_IS_SCALAR_VALUE
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*/
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template<typename StringClass>
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inline StringClass encodeOrFFFD(UChar32 c) {
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StringClass s;
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prv::appendCodePoint<StringClass, true>(s, c);
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return s;
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}
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/**
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* Returns the code point as a string of code units.
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* The code point must be a scalar value; otherwise the behavior is undefined.
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* See https://www.unicode.org/glossary/#unicode_scalar_value
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*
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* @tparam StringClass A version of std::basic_string (or a compatible type)
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* @param c The code point
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* @return the string of c's code units
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* @draft ICU 78
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* @see U_IS_SCALAR_VALUE
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*/
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template<typename StringClass>
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inline StringClass encodeUnsafe(UChar32 c) {
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StringClass s;
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prv::appendCodePoint<StringClass, false>(s, c);
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return s;
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}
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#endif // U_HIDE_DRAFT_API
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} // namespace utfstring
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} // namespace U_HEADER_ONLY_NAMESPACE
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#endif // U_HIDE_DRAFT_API
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#endif // U_SHOW_CPLUSPLUS_API || U_SHOW_CPLUSPLUS_HEADER_API
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#endif // __UTFSTRING_H__
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