mirror of https://github.com/bsnes-emu/bsnes.git
80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
#pragma once
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namespace nall {
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struct string_pascal {
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using type = string_pascal;
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string_pascal(const char* text = nullptr) {
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if(text && *text) {
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uint size = strlen(text);
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_data = memory::allocate<char>(sizeof(uint) + size + 1);
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((uint*)_data)[0] = size;
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memory::copy(_data + sizeof(uint), text, size);
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_data[sizeof(uint) + size] = 0;
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}
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}
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string_pascal(const string& text) {
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if(text.size()) {
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_data = memory::allocate<char>(sizeof(uint) + text.size() + 1);
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((uint*)_data)[0] = text.size();
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memory::copy(_data + sizeof(uint), text.data(), text.size());
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_data[sizeof(uint) + text.size()] = 0;
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}
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}
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string_pascal(const string_pascal& source) { operator=(source); }
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string_pascal(string_pascal&& source) { operator=(move(source)); }
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~string_pascal() {
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if(_data) memory::free(_data);
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}
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explicit operator bool() const { return _data; }
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operator const char*() const { return _data ? _data + sizeof(uint) : nullptr; }
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operator string() const { return _data ? string{_data + sizeof(uint)} : ""; }
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auto operator=(const string_pascal& source) -> type& {
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if(this == &source) return *this;
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if(_data) { memory::free(_data); _data = nullptr; }
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if(source._data) {
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uint size = source.size();
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_data = memory::allocate<char>(sizeof(uint) + size);
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memory::copy(_data, source._data, sizeof(uint) + size);
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}
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return *this;
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}
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auto operator=(string_pascal&& source) -> type& {
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if(this == &source) return *this;
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if(_data) memory::free(_data);
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_data = source._data;
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source._data = nullptr;
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return *this;
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}
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auto operator==(string_view source) const -> bool {
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return size() == source.size() && memory::compare(data(), source.data(), size()) == 0;
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}
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auto operator!=(string_view source) const -> bool {
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return size() != source.size() || memory::compare(data(), source.data(), size()) != 0;
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}
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auto data() const -> char* {
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if(!_data) return nullptr;
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return _data + sizeof(uint);
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}
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auto size() const -> uint {
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if(!_data) return 0;
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return ((uint*)_data)[0];
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}
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protected:
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char* _data = nullptr;
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};
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}
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