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ftplist.cpp
Package: shell.rar [view]
Upload User: xhy777
Upload Date: 2007-02-14
Package Size: 24088k
Code Size: 5k
Category:
Windows Kernel
Development Platform:
Visual C++
- /*****************************************************************************
- CFtpList.cpp - Internal list manager
- It is the caller's responsibility to manage any needed serialization.
- *****************************************************************************/
- #include "priv.h"
- #include "ftplist.h"
- /*****************************************************************************
- FUNCTION: CFtpList::DeleteItemPtr
- Remove the element "pv" from the array.
- *****************************************************************************/
- void CFtpList::DeleteItemPtr(LPVOID pv)
- {
- int nIndex;
- ASSERT(m_hdpa);
- nIndex = DPA_GetPtrIndex(m_hdpa, pv);
- TraceMsg(TF_FTPLIST, "CFtpList::DeleteItemPtr(pv=%#08lx) this=%#08lx, nIndex=%d", pv, this, nIndex);
- if (-1 != nIndex)
- DPA_DeletePtr(m_hdpa, nIndex);
- }
- /*****************************************************************************
- FUNCTION: AppendItem
- Add a new pv to the growing array.
- *****************************************************************************/
- HRESULT CFtpList::AppendItem(LPVOID pv)
- {
- ASSERT(m_hdpa);
- DPA_AppendPtr(m_hdpa, pv);
- //TraceMsg(TF_FTPLIST, "CFtpList::AppendItem(pv=%#08lx) this=%#08lx", pv, this);
- return S_OK;
- }
- /*****************************************************************************
- FUNCTION: InsertSorted
- Add a new pv to the growing array.
- *****************************************************************************/
- HRESULT CFtpList::InsertSorted(LPVOID pv, PFNDPACOMPARE pfnCompare, LPARAM lParam)
- {
- ASSERT(m_hdpa);
- DPA_SortedInsertPtr(m_hdpa, pv, 0, pfnCompare, lParam, DPAS_INSERTBEFORE, pv);
- return S_OK;
- }
- /*****************************************************************************
- FUNCTION: SortedSearch
- DESCRIPTION:
- Search thru the list for the item.
- *****************************************************************************/
- int CFtpList::SortedSearch(LPVOID pv, PFNDPACOMPARE pfnCompare, LPARAM lParam, UINT options)
- {
- return DPA_Search(m_hdpa, pv, 0, pfnCompare, lParam, options);
- }
- /*****************************************************************************
- FUNCTION: Find
- Call back once for each item in the pv list. Stops when the
- callback returns 0, returning the item that triggered the match.
- The callback typically returns the result of a comparison function.
- *****************************************************************************/
- LPVOID CFtpList::Find(PFNDPACOMPARE pfn, LPCVOID pv)
- {
- LPVOID pvoid = NULL;
- int nIndex;
- nIndex = DPA_Search(m_hdpa, (LPVOID) pv, 0, pfn, NULL, 0);
- if (-1 != nIndex)
- pvoid = DPA_GetPtr(m_hdpa, nIndex);
- //TraceMsg(TF_FTPLIST, "CFtpList::Find(pfn=%#08lx; pv=%#08lx) this=%#08lx, nIndex=%d, result=%#08lx", pfn, pv, this, nIndex, pvoid);
- return pvoid;
- }
- /*****************************************************************************
- CFtpList_Create
- Start up a new pv list, with a recommended initial size and other
- callback info.
- *****************************************************************************/
- HRESULT CFtpList_Create(int cpvInit, PFNDPAENUMCALLBACK pfn, UINT nGrow, CFtpList ** ppfl)
- {
- HRESULT hres = E_OUTOFMEMORY;
- CFtpList * pfl = new CFtpList(pfn);
- *ppfl = pfl;
- if (pfl)
- {
- pfl->m_hdpa = DPA_Create(nGrow);
- //CFtpList_Create(pfn=%#08lx) this=%#08lx, cpvInit=%d, nGrow=%d", pfn, pfl, cpvInit, nGrow);
- if (EVAL(pfl->m_hdpa))
- hres = S_OK;
- else
- {
- pfl->Release();
- *ppfl = NULL;
- }
- }
- return hres;
- }
- /****************************************************
- Constructor
- ****************************************************/
- CFtpList::CFtpList(PFNDPAENUMCALLBACK pfnDestroy) : m_cRef(1)
- {
- DllAddRef();
- // This needs to be allocated in Zero Inited Memory.
- // Assert that all Member Variables are inited to Zero.
- ASSERT(!m_hdpa);
- m_pfnDestroy = pfnDestroy;
- LEAK_ADDREF(LEAK_CFtpList);
- }
- /****************************************************
- Destructor
- ****************************************************/
- CFtpList::~CFtpList()
- {
- //TraceMsg(TF_FTPLIST, "CFtpList::~CFtpList() this=%#08lx", this);
- if (m_pfnDestroy)
- DPA_DestroyCallback(m_hdpa, m_pfnDestroy, NULL);
- else
- DPA_Destroy(m_hdpa);
- DllRelease();
- LEAK_DELREF(LEAK_CFtpList);
- }
- //===========================
- // *** IUnknown Interface ***
- //===========================
- ULONG CFtpList::AddRef()
- {
- m_cRef++;
- return m_cRef;
- }
- ULONG CFtpList::Release()
- {
- ASSERT(m_cRef > 0);
- m_cRef--;
- if (m_cRef > 0)
- return m_cRef;
- delete this;
- return 0;
- }
- HRESULT CFtpList::QueryInterface(REFIID riid, void **ppvObj)
- {
- if (IsEqualIID(riid, IID_IUnknown))
- {
- *ppvObj = SAFECAST(this, IUnknown *);
- }
- else
- {
- TraceMsg(TF_FTPQI, "CFtpList::QueryInterface() failed.");
- *ppvObj = NULL;
- return E_NOINTERFACE;
- }
- AddRef();
- return S_OK;
- }