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-
- /////////////////////////////////////////////////////////////////////////////
- //
- // Implementation of parameterized Array
- //
- /////////////////////////////////////////////////////////////////////////////
- // NOTE: we allocate an array of 'm_nMaxSize' elements, but only
- // the current size 'm_nSize' contains properly constructed
- // objects.
-
- #include "stdafx.h"
-
- #ifdef AFX_COLL_SEG
- #pragma code_seg(AFX_COLL_SEG)
- #endif
-
- #include <limits.h>
- #define SIZE_T_MAX UINT_MAX /* max size for a size_t */
-
-
- IMPLEMENT_SERIAL(CByteArray, CObject, 0)
-
- #ifdef _DEBUG
- #undef THIS_FILE
- static char BASED_CODE THIS_FILE[] = __FILE__;
- #endif
-
- #define new DEBUG_NEW
-
- /////////////////////////////////////////////////////////////////////////////
-
-
- /////////////////////////////////////////////////////////////////////////////
-
- CByteArray::CByteArray()
- {
- m_pData = NULL;
- m_nSize = m_nMaxSize = m_nGrowBy = 0;
- }
-
- CByteArray::~CByteArray()
- {
- ASSERT_VALID(this);
-
- delete [] (BYTE*)m_pData;
- }
-
- void CByteArray::SetSize(int nNewSize, int nGrowBy /* = -1 */)
- {
- ASSERT_VALID(this);
- ASSERT(nNewSize >= 0);
-
- if (nGrowBy != -1)
- m_nGrowBy = nGrowBy; // set new size
-
- if (nNewSize == 0)
- {
- // shrink to nothing
- delete [] (BYTE*)m_pData;
- m_pData = NULL;
- m_nSize = m_nMaxSize = 0;
- }
- else if (m_pData == NULL)
- {
- // create one with exact size
- #ifdef SIZE_T_MAX
- ASSERT((long)nNewSize * sizeof(BYTE) <= SIZE_T_MAX); // no overflow
- #endif
- m_pData = (BYTE*) new BYTE[nNewSize * sizeof(BYTE)];
-
- memset(m_pData, 0, nNewSize * sizeof(BYTE)); // zero fill
-
- m_nSize = m_nMaxSize = nNewSize;
- }
- else if (nNewSize <= m_nMaxSize)
- {
- // it fits
- if (nNewSize > m_nSize)
- {
- // initialize the new elements
-
- memset(&m_pData[m_nSize], 0, (nNewSize-m_nSize) * sizeof(BYTE));
-
- }
-
- m_nSize = nNewSize;
- }
- else
- {
- // Otherwise grow array
- int nNewMax;
- if (nNewSize < m_nMaxSize + m_nGrowBy)
- nNewMax = m_nMaxSize + m_nGrowBy; // granularity
- else
- nNewMax = nNewSize; // no slush
-
- #ifdef SIZE_T_MAX
- ASSERT((long)nNewMax * sizeof(BYTE) <= SIZE_T_MAX); // no overflow
- #endif
- BYTE* pNewData = (BYTE*) new BYTE[nNewMax * sizeof(BYTE)];
-
- // copy new data from old
- memcpy(pNewData, m_pData, m_nSize * sizeof(BYTE));
-
- // construct remaining elements
- ASSERT(nNewSize > m_nSize);
-
- memset(&pNewData[m_nSize], 0, (nNewSize-m_nSize) * sizeof(BYTE));
-
-
- // get rid of old stuff (note: no destructors called)
- delete [] (BYTE*)m_pData;
- m_pData = pNewData;
- m_nSize = nNewSize;
- m_nMaxSize = nNewMax;
- }
- }
-
- void CByteArray::FreeExtra()
- {
- ASSERT_VALID(this);
-
- if (m_nSize != m_nMaxSize)
- {
- // shrink to desired size
- #ifdef SIZE_T_MAX
- ASSERT((long)m_nSize * sizeof(BYTE) <= SIZE_T_MAX); // no overflow
- #endif
- BYTE* pNewData = NULL;
- if (m_nSize != 0)
- {
- pNewData = (BYTE*) new BYTE[m_nSize * sizeof(BYTE)];
- // copy new data from old
- memcpy(pNewData, m_pData, m_nSize * sizeof(BYTE));
- }
-
- // get rid of old stuff (note: no destructors called)
- delete [] (BYTE*)m_pData;
- m_pData = pNewData;
- m_nMaxSize = m_nSize;
- }
- }
-
- /////////////////////////////////////////////////////////////////////////////
-
- void CByteArray::SetAtGrow(int nIndex, BYTE newElement)
- {
- ASSERT_VALID(this);
- ASSERT(nIndex >= 0);
-
- if (nIndex >= m_nSize)
- SetSize(nIndex+1);
- m_pData[nIndex] = newElement;
- }
-
- void CByteArray::InsertAt(int nIndex, BYTE newElement, int nCount /*=1*/)
- {
- ASSERT_VALID(this);
- ASSERT(nIndex >= 0); // will expand to meet need
- ASSERT(nCount > 0); // zero or negative size not allowed
-
- if (nIndex >= m_nSize)
- {
- // adding after the end of the array
- SetSize(nIndex + nCount); // grow so nIndex is valid
- }
- else
- {
- // inserting in the middle of the array
- int nOldSize = m_nSize;
- SetSize(m_nSize + nCount); // grow it to new size
- // shift old data up to fill gap
- memmove(&m_pData[nIndex+nCount], &m_pData[nIndex],
- (nOldSize-nIndex) * sizeof(BYTE));
-
- // re-init slots we copied from
-
- memset(&m_pData[nIndex], 0, nCount * sizeof(BYTE));
-
- }
-
- // insert new value in the gap
- ASSERT(nIndex + nCount <= m_nSize);
- while (nCount--)
- m_pData[nIndex++] = newElement;
- }
-
- void CByteArray::RemoveAt(int nIndex, int nCount /* = 1 */)
- {
- ASSERT_VALID(this);
- ASSERT(nIndex >= 0);
- ASSERT(nCount >= 0);
- ASSERT(nIndex + nCount <= m_nSize);
-
- // just remove a range
- int nMoveCount = m_nSize - (nIndex + nCount);
-
- if (nMoveCount)
- memcpy(&m_pData[nIndex], &m_pData[nIndex + nCount],
- nMoveCount * sizeof(BYTE));
- m_nSize -= nCount;
- }
-
- void CByteArray::InsertAt(int nStartIndex, CByteArray* pNewArray)
- {
- ASSERT_VALID(this);
- ASSERT(pNewArray != NULL);
- ASSERT(pNewArray->IsKindOf(RUNTIME_CLASS(CByteArray)));
- ASSERT_VALID(pNewArray);
- ASSERT(nStartIndex >= 0);
-
- if (pNewArray->GetSize() > 0)
- {
- InsertAt(nStartIndex, pNewArray->GetAt(0), pNewArray->GetSize());
- for (int i = 0; i < pNewArray->GetSize(); i++)
- SetAt(nStartIndex + i, pNewArray->GetAt(i));
- }
- }
-
- /////////////////////////////////////////////////////////////////////////////
- // Serialization
-
-
- void CByteArray::Serialize(CArchive& ar)
- {
- ASSERT_VALID(this);
-
- CObject::Serialize(ar);
-
- if (ar.IsStoring())
- {
- ar << (WORD) m_nSize;
- for (int i = 0; i < m_nSize; i++)
- ar << m_pData[i];
- }
- else
- {
- WORD nOldSize;
- ar >> nOldSize;
- SetSize(nOldSize);
-
- for (int i = 0; i < m_nSize; i++)
- ar >> m_pData[i];
- }
- }
-
- /////////////////////////////////////////////////////////////////////////////
- // Diagnostics
-
- #ifdef _DEBUG
- void CByteArray::Dump(CDumpContext& dc) const
- {
- ASSERT_VALID(this);
-
- #define MAKESTRING(x) #x
- AFX_DUMP1(dc, "a " MAKESTRING(CByteArray) " with ", m_nSize);
- AFX_DUMP0(dc, " elements");
- #undef MAKESTRING
- if (dc.GetDepth() > 0)
- {
- AFX_DUMP0(dc, "\n");
- for (int i = 0; i < m_nSize; i++)
- {
- AFX_DUMP1(dc, "\n\t[", i);
- AFX_DUMP1(dc, "] = ", m_pData[i]);
- }
- }
- }
-
- void CByteArray::AssertValid() const
- {
- CObject::AssertValid();
- if (m_pData == NULL)
- {
- ASSERT(m_nSize == 0);
- ASSERT(m_nMaxSize == 0);
- }
- else
- {
- ASSERT(m_nSize >= 0);
- ASSERT(m_nMaxSize >= 0);
- ASSERT(m_nSize <= m_nMaxSize);
- ASSERT(AfxIsValidAddress(m_pData, m_nMaxSize * sizeof(BYTE)));
- }
- }
- #endif //_DEBUG
-
- /////////////////////////////////////////////////////////////////////////////
-