mirror of
https://github.com/mozilla/gecko-dev.git
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1a97e11ffd
The mailto library is the mail compose code ripped out of the old Messenger libmsg library, then cleaned up somewhat (it could still use more cleaning). This library should only be built ifdef MOZ_MAIL_COMPOSE.
526 lines
11 KiB
C++
526 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "msg.h"
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#include "xp.h"
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#include "ptrarray.h"
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#include "xp_qsort.h"
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#ifdef XP_WIN16
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#define SIZE_T_MAX 0xFF80 // Maximum allocation size
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#define MAX_ARR_ELEMS SIZE_T_MAX/sizeof(void *)
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#endif
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XPPtrArray::XPPtrArray()
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{
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m_nSize = 0;
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m_nMaxSize = 0;
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m_pData = NULL;
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}
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XPPtrArray::~XPPtrArray()
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{
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SetSize(0);
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}
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/////////////////////////////////////////////////////////////////////////////
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int XPPtrArray::GetSize() const
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{
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return m_nSize;
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}
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XP_Bool XPPtrArray::IsValidIndex(int32 nIndex)
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{
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return (nIndex < GetSize() && nIndex >= 0);
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}
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XP_Bool XPPtrArray::SetSize(int nSize)
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{
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XP_ASSERT(nSize >= 0);
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#ifdef MAX_ARR_ELEMS
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if (nSize > MAX_ARR_ELEMS);
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{
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XP_ASSERT(nSize <= MAX_ARR_ELEMS); // Will fail
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return FALSE;
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}
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#endif
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if (nSize == 0)
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{
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// Remove all elements
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XP_FREE(m_pData);
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m_nSize = 0;
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m_nMaxSize = 0;
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m_pData = NULL;
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}
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else if (m_pData == NULL)
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{
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// Create a new array
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m_nMaxSize = MAX(8, nSize);
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m_pData = (void **)XP_CALLOC(1, m_nMaxSize * sizeof(void *));
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if (m_pData)
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m_nSize = nSize;
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else
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m_nSize = m_nMaxSize = 0;
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}
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else if (nSize <= m_nMaxSize)
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{
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// The new size is within the current maximum size, make sure new
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// elements are initialized to zero
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if (nSize > m_nSize)
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XP_MEMSET(&m_pData[m_nSize], 0, (nSize - m_nSize) * sizeof(void *));
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m_nSize = nSize;
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}
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else
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{
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// The array needs to grow, figure out how much
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int nGrowBy, nMaxSize;
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nGrowBy = MIN(1024, MAX(8, m_nSize / 8));
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nMaxSize = MAX(nSize, m_nMaxSize + nGrowBy);
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#ifdef MAX_ARR_ELEMS
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nMaxSize = MIN(MAX_ARR_ELEMS, nMaxSize);
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#endif
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void **pNewData = (void **)XP_ALLOC(nMaxSize * sizeof(void *));
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if (pNewData)
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{
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// Copy the data from the old array to the new one
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XP_MEMCPY(pNewData, m_pData, m_nSize * sizeof(void *));
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// Zero out the remaining elements
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XP_MEMSET(&pNewData[m_nSize], 0, (nSize - m_nSize) * sizeof(void *));
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m_nSize = nSize;
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m_nMaxSize = nMaxSize;
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// Free the old array
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XP_FREE(m_pData);
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m_pData = pNewData;
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}
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}
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return nSize == m_nSize;
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}
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/////////////////////////////////////////////////////////////////////////////
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void*& XPPtrArray::ElementAt(int nIndex)
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{
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XP_ASSERT(nIndex >= 0 && nIndex < m_nSize);
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return m_pData[nIndex];
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}
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int XPPtrArray::FindIndex (int nStartIndex, void *pToFind) const
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{
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for (int i = nStartIndex; i < GetSize(); i++)
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if (m_pData[i] == pToFind)
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return i;
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return -1;
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}
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int XPPtrArray::FindIndexUsing(int nStartIndex, void* pToFind, XPCompareFunc* compare) const
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{
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for (int i = nStartIndex; i < GetSize(); i++)
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if (compare(&m_pData[i], &pToFind) == 0)
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return i;
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return -1;
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}
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void *XPPtrArray::GetAt(int nIndex) const
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{
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XP_ASSERT(nIndex >= 0 && nIndex < m_nSize);
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return m_pData[nIndex];
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}
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void XPPtrArray::SetAt(int nIndex, void *newElement)
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{
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XP_ASSERT(nIndex >= 0 && nIndex < m_nSize);
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m_pData[nIndex] = newElement;
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}
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/////////////////////////////////////////////////////////////////////////////
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int XPPtrArray::Add(void *newElement)
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{
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int nIndex = m_nSize;
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#ifdef MAX_ARR_ELEMS
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if (nIndex >= MAX_ARR_ELEMS)
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return -1;
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#endif
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SetAtGrow(nIndex, newElement);
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return nIndex;
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}
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void XPPtrArray::InsertAt(int nIndex, void *newElement, int nCount)
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{
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XP_ASSERT(nIndex >= 0);
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XP_ASSERT(nCount > 0);
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if (nIndex >= m_nSize)
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{
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// If the new element is after the end of the array, grow the array
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SetSize(nIndex + nCount);
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}
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else
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{
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// The element is being insert inside the array
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int nOldSize = m_nSize;
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SetSize(m_nSize + nCount);
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// Move the data after the insertion point
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XP_MEMMOVE(&m_pData[nIndex + nCount], &m_pData[nIndex],
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(nOldSize - nIndex) * sizeof(void *));
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}
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// Insert the new elements
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XP_ASSERT(nIndex + nCount <= m_nSize);
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while (nCount--)
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m_pData[nIndex++] = newElement;
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}
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void XPPtrArray::InsertAt(int nStartIndex, const XPPtrArray *pNewArray)
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{
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XP_ASSERT(nStartIndex >= 0);
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XP_ASSERT(pNewArray != NULL);
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if (pNewArray->GetSize() > 0)
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{
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InsertAt(nStartIndex, pNewArray->GetAt(0), pNewArray->GetSize());
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for (int i = 1; i < pNewArray->GetSize(); i++)
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m_pData[nStartIndex + i] = pNewArray->GetAt(i);
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}
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}
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XP_Bool XPPtrArray::Remove(void *pToRemove)
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{
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int index = FindIndex(0, pToRemove);
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if (index != -1)
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{
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RemoveAt(index);
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return TRUE;
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}
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else
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return FALSE;
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}
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void XPPtrArray::RemoveAll()
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{
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SetSize(0);
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}
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void XPPtrArray::RemoveAt(int nIndex, int nCount)
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{
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XP_ASSERT(nIndex >= 0);
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XP_ASSERT(nIndex + nCount <= m_nSize);
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if (nCount > 0)
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{
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// Make sure not to overstep the end of the array
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int nMoveCount = m_nSize - (nIndex + nCount);
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if (nCount && nMoveCount)
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XP_MEMMOVE(&m_pData[nIndex], &m_pData[nIndex + nCount],
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nMoveCount * sizeof(void*));
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m_nSize -= nCount;
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}
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}
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void XPPtrArray::RemoveAt(int nStartIndex, const XPPtrArray *pArray)
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{
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XP_ASSERT(nStartIndex >= 0);
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XP_ASSERT(pArray != NULL);
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for (int i = 0; i < pArray->GetSize(); i++)
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{
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int index = FindIndex(nStartIndex, pArray->GetAt(i));
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if (index >= 0)
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RemoveAt(index);
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}
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}
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void XPPtrArray::SetAtGrow(int nIndex, void *newElement)
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{
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XP_ASSERT(nIndex >= 0);
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if (nIndex >= m_nSize)
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SetSize(nIndex+1);
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m_pData[nIndex] = newElement;
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}
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/////////////////////////////////////////////////////////////////////////////
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int XPPtrArray::InsertBinary(void *newElement, int ( *compare )(const void *elem1, const void *elem2))
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{
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int current = 0;
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int left = 0;
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int right = GetSize() - 1;
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int comparison = 0;
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while (left <= right)
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{
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current = (left + right) / 2;
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void *pCurrent = GetAt(current);
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comparison = compare(&pCurrent, &newElement);
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if (comparison == 0)
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break;
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else if (comparison > 0)
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right = current - 1;
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else
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left = current + 1;
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}
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if (comparison < 0)
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current += 1;
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XPPtrArray::InsertAt(current, newElement);
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return current;
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}
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void XPPtrArray::QuickSort (int ( *compare )(const void *elem1, const void *elem2))
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{
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if (m_nSize > 1)
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XP_QSORT (m_pData, m_nSize, sizeof(void*), compare);
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}
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/////////////////////////////////////////////////////////////////////////////
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void *XPPtrArray::operator[](int nIndex) const
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{
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return GetAt(nIndex);
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}
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void *&XPPtrArray::operator[](int nIndex)
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{
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return ElementAt(nIndex);
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}
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/////////////////////////////////////////////////////////////////////////////
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// XPSortedPtrArray
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XPSortedPtrArray::XPSortedPtrArray(XPCompareFunc *compare)
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:XPPtrArray()
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{
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m_CompareFunc = compare;
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}
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int XPSortedPtrArray::Add(void *newElement)
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{
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#ifdef MAX_ARR_ELEMS
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if (m_nSize >= MAX_ARR_ELEMS)
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return -1;
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#endif
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if (m_CompareFunc)
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return InsertBinary(newElement, m_CompareFunc);
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else
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return XPPtrArray::Add (newElement);
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}
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int XPSortedPtrArray::FindIndex(int nStartIndex, void *pToFind) const
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{
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if (m_CompareFunc)
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return FindIndexUsing(nStartIndex, pToFind, m_CompareFunc);
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else
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return XPPtrArray::FindIndex(nStartIndex, pToFind);
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}
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int XPSortedPtrArray::FindIndexUsing(int nStartIndex, void *pToFind, XPCompareFunc *compare) const
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{
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if (GetSize() == 0)
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return -1;
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if (!m_CompareFunc)
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return TRUE;
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int current = 0;
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int left = nStartIndex;
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int right = GetSize() - 1;
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int comparison = 0;
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while (left <= right)
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{
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current = (left + right) / 2;
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void *pCurrent = GetAt(current);
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comparison = compare(&pCurrent, &pToFind);
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if (comparison == 0)
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break;
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else if (comparison > 0)
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right = current - 1;
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else
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left = current + 1;
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}
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if (comparison != 0)
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current = -1;
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return current;
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}
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/////////////////////////////////////////////////////////////////////////////
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//-----------------------------------
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// These functions are not to be called if the array is sorted (i.e. has a compare func)
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//-----------------------------------
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void XPSortedPtrArray::SetAt(int index, void *newElement)
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{
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if (!m_CompareFunc)
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XPPtrArray::SetAt (index, newElement);
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else
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XP_ASSERT(FALSE); // Illegal operation because the array is sorted
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}
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void XPSortedPtrArray::InsertAt(int index, void *newElement, int count)
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{
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if (!m_CompareFunc)
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XPPtrArray::InsertAt (index, newElement, count);
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else
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XP_ASSERT(FALSE); // Illegal operation because the array is sorted
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}
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void XPSortedPtrArray::InsertAt(int index, const XPPtrArray *array)
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{
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if (!m_CompareFunc)
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XPPtrArray::InsertAt (index, array);
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else
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XP_ASSERT(FALSE); // Illegal operation because the array is sorted
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}
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/////////////////////////////////////////////////////////////////////////////
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// Diagnostics
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#ifdef DEBUG
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XP_Bool XPPtrArray::VerifySort() const
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{
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return TRUE;
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}
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XP_Bool XPSortedPtrArray::VerifySort() const
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{
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// Check that the assumption of sorting in the array is valid.
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if (GetSize() > 0 && m_CompareFunc)
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{
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void *cur = GetAt(0);
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for (int i = 1; i < GetSize(); i++)
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{
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void *prev = cur;
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cur = GetAt(i);
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if (m_CompareFunc(&cur, &prev) < 0)
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{
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XP_ASSERT(FALSE);
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return FALSE;
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}
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}
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}
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return TRUE;
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}
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#endif
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///////////////////////////////////////////////////////////////////////////////
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msg_StringArray::msg_StringArray(XP_Bool ownsMemory, XPCompareFunc *compare)
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:XPSortedPtrArray(compare)
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{
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m_ownsMemory = ownsMemory;
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}
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msg_StringArray::~msg_StringArray()
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{
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RemoveAll();
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}
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int msg_StringArray::Add(void *string)
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{
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return XPPtrArray::Add(m_ownsMemory ? XP_STRDUP((char *)string) : string);
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}
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void msg_StringArray::RemoveAll()
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{
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if (m_ownsMemory)
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{
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for (int i = 0; i < GetSize(); i++)
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{
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void *v = (void *)GetAt(i);
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XP_FREEIF(v);
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}
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}
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XPSortedPtrArray::RemoveAll(); // call the base class to shrink m_pData list
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}
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XP_Bool msg_StringArray::ImportTokenList(const char *list, const char *tokenSeparators /* = " ," */)
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{
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// Tokenizes the input string and builds up the array of strings based on the
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// optional caller-provided token separators.
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XP_ASSERT(m_ownsMemory); // must own the memory for the substrings
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if (list && m_ownsMemory)
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{
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char *scratch = XP_STRDUP(list); // make a copy cause strtok will change it
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if (scratch)
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{
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char *elem = XP_STRTOK(scratch, tokenSeparators);
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if (elem)
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{
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Add (elem);
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while (NULL != (elem = XP_STRTOK(NULL, tokenSeparators)))
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Add (elem);
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}
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XP_FREE(scratch);
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return TRUE;
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}
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}
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return FALSE;
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}
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char *msg_StringArray::ExportTokenList(const char *separator /* = " ," */)
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{
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// Catenates all the member strings into a big string separated by optional
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// caller-provided string. The return value must be freed by the caller
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int i, len = 0;
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int lenSep = XP_STRLEN(separator);
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for (i = 0; i < GetSize(); i++)
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len += XP_STRLEN(GetAt(i)) + lenSep;
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char *list = (char *)XP_ALLOC(len + 1);
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if (list)
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{
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*list = '\0';
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for (i = 0; i < GetSize(); i++)
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{
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if (i > 0)
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XP_STRCAT(list, separator);
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XP_STRCAT(list, GetAt(i));
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}
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}
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return list;
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}
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