other-licenses/7zstub/src/Common/Buffer.h@6474c204b198 (annotated)
other-licenses/7zstub/src/Common/Buffer.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Common/Buffer.h |
| michael@0 | 2 | |
| michael@0 | 3 | #ifndef __COMMON_BUFFER_H |
| michael@0 | 4 | #define __COMMON_BUFFER_H |
| michael@0 | 5 | |
| michael@0 | 6 | #include "Defs.h" |
| michael@0 | 7 | |
| michael@0 | 8 | template <class T> class CBuffer |
| michael@0 | 9 | { |
| michael@0 | 10 | protected: |
| michael@0 | 11 | size_t _capacity; |
| michael@0 | 12 | T *_items; |
| michael@0 | 13 | void Free() |
| michael@0 | 14 | { |
| michael@0 | 15 | delete []_items; |
| michael@0 | 16 | _items = 0; |
| michael@0 | 17 | _capacity = 0; |
| michael@0 | 18 | } |
| michael@0 | 19 | public: |
| michael@0 | 20 | CBuffer(): _capacity(0), _items(0) {}; |
| michael@0 | 21 | CBuffer(const CBuffer &buffer): _capacity(0), _items(0) { *this = buffer; } |
| michael@0 | 22 | CBuffer(size_t size): _items(0), _capacity(0) { SetCapacity(size); } |
| michael@0 | 23 | virtual ~CBuffer() { delete []_items; } |
| michael@0 | 24 | operator T *() { return _items; }; |
| michael@0 | 25 | operator const T *() const { return _items; }; |
| michael@0 | 26 | size_t GetCapacity() const { return _capacity; } |
| michael@0 | 27 | void SetCapacity(size_t newCapacity) |
| michael@0 | 28 | { |
| michael@0 | 29 | if (newCapacity == _capacity) |
| michael@0 | 30 | return; |
| michael@0 | 31 | T *newBuffer; |
| michael@0 | 32 | if (newCapacity > 0) |
| michael@0 | 33 | { |
| michael@0 | 34 | newBuffer = new T[newCapacity]; |
| michael@0 | 35 | if(_capacity > 0) |
| michael@0 | 36 | memmove(newBuffer, _items, MyMin(_capacity, newCapacity) * sizeof(T)); |
| michael@0 | 37 | } |
| michael@0 | 38 | else |
| michael@0 | 39 | newBuffer = 0; |
| michael@0 | 40 | delete []_items; |
| michael@0 | 41 | _items = newBuffer; |
| michael@0 | 42 | _capacity = newCapacity; |
| michael@0 | 43 | } |
| michael@0 | 44 | CBuffer& operator=(const CBuffer &buffer) |
| michael@0 | 45 | { |
| michael@0 | 46 | Free(); |
| michael@0 | 47 | if(buffer._capacity > 0) |
| michael@0 | 48 | { |
| michael@0 | 49 | SetCapacity(buffer._capacity); |
| michael@0 | 50 | memmove(_items, buffer._items, buffer._capacity * sizeof(T)); |
| michael@0 | 51 | } |
| michael@0 | 52 | return *this; |
| michael@0 | 53 | } |
| michael@0 | 54 | }; |
| michael@0 | 55 | |
| michael@0 | 56 | template <class T> |
| michael@0 | 57 | bool operator==(const CBuffer<T>& b1, const CBuffer<T>& b2) |
| michael@0 | 58 | { |
| michael@0 | 59 | if (b1.GetCapacity() != b2.GetCapacity()) |
| michael@0 | 60 | return false; |
| michael@0 | 61 | for (size_t i = 0; i < b1.GetCapacity(); i++) |
| michael@0 | 62 | if (b1[i] != b2[i]) |
| michael@0 | 63 | return false; |
| michael@0 | 64 | return true; |
| michael@0 | 65 | } |
| michael@0 | 66 | |
| michael@0 | 67 | template <class T> |
| michael@0 | 68 | bool operator!=(const CBuffer<T>& b1, const CBuffer<T>& b2) |
| michael@0 | 69 | { |
| michael@0 | 70 | return !(b1 == b2); |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | typedef CBuffer<char> CCharBuffer; |
| michael@0 | 74 | typedef CBuffer<wchar_t> CWCharBuffer; |
| michael@0 | 75 | typedef CBuffer<unsigned char> CByteBuffer; |
| michael@0 | 76 | |
| michael@0 | 77 | #endif |
