Upload 2.0.2

[physicsfs] / lzma / CPP / Common / MyVector.cpp

diff --git a/lzma/CPP/Common/MyVector.cpp b/lzma/CPP/Common/MyVector.cpp
new file mode 100644 (file)
index 0000000..def2a58
--- /dev/null
+++ b/lzma/CPP/Common/MyVector.cpp
@@ -0,0 +1,78 @@
+// Common/MyVector.cpp
+
+#include "StdAfx.h"
+
+#include <string.h>
+
+#include "MyVector.h"
+
+CBaseRecordVector::~CBaseRecordVector() { Free(); }
+
+void CBaseRecordVector::Free()
+{ 
+  delete []((unsigned char *)_items); 
+  _capacity = 0;
+  _size = 0;
+  _items = 0;
+}
+
+void CBaseRecordVector::Clear() { DeleteFrom(0); }
+void CBaseRecordVector::DeleteBack() { Delete(_size - 1); }
+void CBaseRecordVector::DeleteFrom(int index) { Delete(index, _size - index); }
+
+void CBaseRecordVector::ReserveOnePosition()
+{
+  if (_size != _capacity)
+    return;
+  int delta;
+  if (_capacity > 64)
+    delta = _capacity / 2;
+  else if (_capacity > 8)
+    delta = 8;
+  else
+    delta = 4;
+  Reserve(_capacity + delta);
+}
+
+void CBaseRecordVector::Reserve(int newCapacity)
+{
+  if (newCapacity <= _capacity)
+    return;
+  if ((unsigned)newCapacity >= ((unsigned)1 << (sizeof(unsigned) * 8 - 1)))
+    throw 1052353;
+  size_t newSize = (size_t)(unsigned)newCapacity * _itemSize;
+  if (newSize / _itemSize != (size_t)(unsigned)newCapacity)
+    throw 1052354;
+  unsigned char *p = new unsigned char[newSize];
+  if (p == 0)
+    throw 1052355;
+  int numRecordsToMove = _capacity;
+  memmove(p, _items, _itemSize * numRecordsToMove);
+  delete [](unsigned char *)_items;
+  _items = p;
+  _capacity = newCapacity;
+}
+
+void CBaseRecordVector::MoveItems(int destIndex, int srcIndex)
+{
+  memmove(((unsigned char *)_items) + destIndex * _itemSize, 
+    ((unsigned char  *)_items) + srcIndex * _itemSize, 
+    _itemSize * (_size - srcIndex));
+}
+
+void CBaseRecordVector::InsertOneItem(int index)
+{
+  ReserveOnePosition();
+  MoveItems(index + 1, index);
+  _size++;
+}
+
+void CBaseRecordVector::Delete(int index, int num)
+{
+  TestIndexAndCorrectNum(index, num);
+  if (num > 0)
+  {
+    MoveItems(index, index + num);
+    _size -= num;
+  }
+}