| 11 | #include <cstring> |
| 12 | |
| 13 | class TBuffer { |
| 14 | public: |
| 15 | using TIterator = char*; |
| 16 | using TConstIterator = const char*; |
| 17 | |
| 18 | TBuffer(size_t len = 0); |
| 19 | TBuffer(const char* buf, size_t len); |
| 20 | |
| 21 | TBuffer(const TBuffer& b) |
| 22 | : Data_(nullptr) |
| 23 | , Len_(0) |
| 24 | , Pos_(0) |
| 25 | { |
| 26 | *this = b; |
| 27 | } |
| 28 | |
| 29 | TBuffer(TBuffer&& b) noexcept; |
| 30 | |
| 31 | TBuffer& operator=(TBuffer&& b) noexcept; |
| 32 | |
| 33 | TBuffer& operator=(const TBuffer& b) { |
| 34 | if (this != &b) { |
| 35 | Assign(b.Data(), b.Size()); |
| 36 | } |
| 37 | return *this; |
| 38 | } |
| 39 | |
| 40 | ~TBuffer(); |
| 41 | |
| 42 | inline void Clear() noexcept { |
| 43 | Pos_ = 0; |
| 44 | } |
| 45 | |
| 46 | inline void EraseBack(size_t n) noexcept { |
| 47 | Y_ASSERT(n <= Pos_); |
| 48 | Pos_ -= n; |
| 49 | } |
| 50 | |
| 51 | Y_REINITIALIZES_OBJECT inline void Reset() noexcept { |
| 52 | TBuffer().Swap(*this); |
| 53 | } |
| 54 | |
| 55 | inline void Assign(const char* data, size_t len) { |
| 56 | Clear(); |
| 57 | Append(data, len); |
| 58 | } |
| 59 | |
| 60 | inline void Assign(const char* b, const char* e) { |
| 61 | Assign(b, NonNegativeDistance(b, e)); |
| 62 | } |
| 63 | |
| 64 | inline char* Data() noexcept { |
| 65 | return Data_; |
| 66 | } |
| 67 | |
| 68 | inline const char* Data() const noexcept { |
| 69 | return Data_; |
| 70 | } |