other-licenses/7zstub/src/Common/Vector.cpp@925c144e1f1f (annotated)
other-licenses/7zstub/src/Common/Vector.cpp
Fri, 16 Jan 2015 18:13:44 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Fri, 16 Jan 2015 18:13:44 +0100
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
- permissions
- -rw-r--r--
Integrate suggestion from review to improve consistency with existing code.
| michael@0 | 1 | // Common/Vector.cpp |
| michael@0 | 2 | |
| michael@0 | 3 | #include "StdAfx.h" |
| michael@0 | 4 | |
| michael@0 | 5 | #include <string.h> |
| michael@0 | 6 | |
| michael@0 | 7 | #include "Vector.h" |
| michael@0 | 8 | |
| michael@0 | 9 | CBaseRecordVector::~CBaseRecordVector() |
| michael@0 | 10 | { delete []((unsigned char *)_items); } |
| michael@0 | 11 | void CBaseRecordVector::Clear() |
| michael@0 | 12 | { DeleteFrom(0); } |
| michael@0 | 13 | void CBaseRecordVector::DeleteBack() |
| michael@0 | 14 | { Delete(_size - 1); } |
| michael@0 | 15 | void CBaseRecordVector::DeleteFrom(int index) |
| michael@0 | 16 | { Delete(index, _size - index); } |
| michael@0 | 17 | |
| michael@0 | 18 | void CBaseRecordVector::ReserveOnePosition() |
| michael@0 | 19 | { |
| michael@0 | 20 | if(_size != _capacity) |
| michael@0 | 21 | return; |
| michael@0 | 22 | int delta; |
| michael@0 | 23 | if (_capacity > 64) |
| michael@0 | 24 | delta = _capacity / 2; |
| michael@0 | 25 | else if (_capacity > 8) |
| michael@0 | 26 | delta = 8; |
| michael@0 | 27 | else |
| michael@0 | 28 | delta = 4; |
| michael@0 | 29 | Reserve(_capacity + delta); |
| michael@0 | 30 | } |
| michael@0 | 31 | |
| michael@0 | 32 | void CBaseRecordVector::Reserve(int newCapacity) |
| michael@0 | 33 | { |
| michael@0 | 34 | if(newCapacity <= _capacity) |
| michael@0 | 35 | return; |
| michael@0 | 36 | /* |
| michael@0 | 37 | #ifndef _DEBUG |
| michael@0 | 38 | static const unsigned int kMaxVectorSize = 0xF0000000; |
| michael@0 | 39 | if(newCapacity < _size || |
| michael@0 | 40 | ((unsigned int )newCapacity * (unsigned int )_itemSize) > kMaxVectorSize) |
| michael@0 | 41 | throw 1052354; |
| michael@0 | 42 | #endif |
| michael@0 | 43 | */ |
| michael@0 | 44 | unsigned char *p = new unsigned char[newCapacity * _itemSize]; |
| michael@0 | 45 | int numRecordsToMove = _capacity; |
| michael@0 | 46 | memmove(p, _items, _itemSize * numRecordsToMove); |
| michael@0 | 47 | delete [](unsigned char *)_items; |
| michael@0 | 48 | _items = p; |
| michael@0 | 49 | _capacity = newCapacity; |
| michael@0 | 50 | } |
| michael@0 | 51 | |
| michael@0 | 52 | void CBaseRecordVector::MoveItems(int destIndex, int srcIndex) |
| michael@0 | 53 | { |
| michael@0 | 54 | memmove(((unsigned char *)_items) + destIndex * _itemSize, |
| michael@0 | 55 | ((unsigned char *)_items) + srcIndex * _itemSize, |
| michael@0 | 56 | _itemSize * (_size - srcIndex)); |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | void CBaseRecordVector::InsertOneItem(int index) |
| michael@0 | 60 | { |
| michael@0 | 61 | ReserveOnePosition(); |
| michael@0 | 62 | MoveItems(index + 1, index); |
| michael@0 | 63 | _size++; |
| michael@0 | 64 | } |
| michael@0 | 65 | |
| michael@0 | 66 | void CBaseRecordVector::Delete(int index, int num) |
| michael@0 | 67 | { |
| michael@0 | 68 | TestIndexAndCorrectNum(index, num); |
| michael@0 | 69 | if (num > 0) |
| michael@0 | 70 | { |
| michael@0 | 71 | MoveItems(index, index + num); |
| michael@0 | 72 | _size -= num; |
| michael@0 | 73 | } |
| michael@0 | 74 | } |
