321 lines
9.5 KiB
C++
321 lines
9.5 KiB
C++
//-----------------------------------------------------------------------
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// This file is part of the Windows SDK Code Samples.
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//
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// Copyright (C) Microsoft Corporation. All rights reserved.
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//
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// This source code is intended only as a supplement to Microsoft
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// Development Tools and/or on-line documentation. See these other
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// materials for detailed information regarding Microsoft code samples.
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//
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// THIS CODE AND INFORMATION ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY
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// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//-----------------------------------------------------------------------
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#include <ole2.h>
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#include <xmllite.h>
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#include <stdio.h>
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#pragma warning(disable : 4127) // conditional expression is constant
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#define CHKHR(stmt) do { hr = (stmt); if (FAILED(hr)) goto CleanUp; } while(0)
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#define HR(stmt) do { hr = (stmt); goto CleanUp; } while(0)
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#define SAFE_RELEASE(I) do { if (I){ I->Release(); } I = NULL; } while(0)
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//implement filestream that derives from IStream
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class FileStream : public IStream
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{
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FileStream(HANDLE hFile)
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{
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_refcount = 1;
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_hFile = hFile;
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}
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~FileStream()
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{
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if (_hFile != INVALID_HANDLE_VALUE)
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{
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::CloseHandle(_hFile);
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}
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}
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public:
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HRESULT static OpenFile(LPCWSTR pName, IStream ** ppStream, bool fWrite)
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{
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HANDLE hFile = ::CreateFileW(pName, fWrite ? GENERIC_WRITE : GENERIC_READ, FILE_SHARE_READ,
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NULL, fWrite ? CREATE_ALWAYS : OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
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if (hFile == INVALID_HANDLE_VALUE)
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return HRESULT_FROM_WIN32(GetLastError());
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*ppStream = new FileStream(hFile);
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if(*ppStream == NULL)
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CloseHandle(hFile);
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return S_OK;
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}
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virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, __RPC__deref_out _Result_nullonfailure_ void __RPC_FAR *__RPC_FAR *ppvObject)
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{
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if (!ppvObject)
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return E_INVALIDARG;
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(*ppvObject) = NULL;
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if (iid == __uuidof(IUnknown)
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|| iid == __uuidof(IStream)
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|| iid == __uuidof(ISequentialStream))
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{
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*ppvObject = static_cast<IStream*>(this);
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AddRef();
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return S_OK;
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} else
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return E_NOINTERFACE;
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}
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virtual ULONG STDMETHODCALLTYPE AddRef(void)
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{
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return (ULONG)InterlockedIncrement(&_refcount);
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}
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virtual ULONG STDMETHODCALLTYPE Release(void)
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{
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ULONG res = (ULONG) InterlockedDecrement(&_refcount);
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if (res == 0)
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delete this;
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return res;
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}
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// ISequentialStream Interface
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public:
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virtual HRESULT STDMETHODCALLTYPE Read(_Out_writes_bytes_to_(cb, *pcbRead) void* pv, _In_ ULONG cb, _Out_opt_ ULONG* pcbRead)
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{
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BOOL rc = ReadFile(_hFile, pv, cb, pcbRead, NULL);
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return (rc) ? S_OK : HRESULT_FROM_WIN32(GetLastError());
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}
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virtual HRESULT STDMETHODCALLTYPE Write(_In_reads_bytes_(cb) const void* pv, _In_ ULONG cb, _Out_opt_ ULONG* pcbWritten)
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{
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BOOL rc = WriteFile(_hFile, pv, cb, pcbWritten, NULL);
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return rc ? S_OK : HRESULT_FROM_WIN32(GetLastError());
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}
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// IStream Interface
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public:
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virtual HRESULT STDMETHODCALLTYPE SetSize(ULARGE_INTEGER)
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{
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return E_NOTIMPL;
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}
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virtual HRESULT STDMETHODCALLTYPE CopyTo(_In_ IStream*, ULARGE_INTEGER, _Out_opt_ ULARGE_INTEGER*, _Out_opt_ ULARGE_INTEGER*)
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{
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return E_NOTIMPL;
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}
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virtual HRESULT STDMETHODCALLTYPE Commit(DWORD)
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{
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return E_NOTIMPL;
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}
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virtual HRESULT STDMETHODCALLTYPE Revert(void)
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{
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return E_NOTIMPL;
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}
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virtual HRESULT STDMETHODCALLTYPE LockRegion(ULARGE_INTEGER, ULARGE_INTEGER, DWORD)
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{
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return E_NOTIMPL;
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}
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virtual HRESULT STDMETHODCALLTYPE UnlockRegion(ULARGE_INTEGER, ULARGE_INTEGER, DWORD)
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{
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return E_NOTIMPL;
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}
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virtual HRESULT STDMETHODCALLTYPE Clone(__RPC__deref_out_opt IStream **)
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{
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return E_NOTIMPL;
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}
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virtual HRESULT STDMETHODCALLTYPE Seek(LARGE_INTEGER liDistanceToMove, DWORD dwOrigin, _Out_opt_ ULARGE_INTEGER* lpNewFilePointer)
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{
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DWORD dwMoveMethod;
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switch(dwOrigin)
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{
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case STREAM_SEEK_SET:
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dwMoveMethod = FILE_BEGIN;
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break;
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case STREAM_SEEK_CUR:
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dwMoveMethod = FILE_CURRENT;
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break;
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case STREAM_SEEK_END:
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dwMoveMethod = FILE_END;
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break;
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default:
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return STG_E_INVALIDFUNCTION;
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break;
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}
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if (SetFilePointerEx(_hFile, liDistanceToMove, (PLARGE_INTEGER) lpNewFilePointer,
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dwMoveMethod) == 0)
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return HRESULT_FROM_WIN32(GetLastError());
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return S_OK;
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}
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virtual HRESULT STDMETHODCALLTYPE Stat(__RPC__out STATSTG* pStatstg, DWORD )
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{
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if (GetFileSizeEx(_hFile, (PLARGE_INTEGER) &pStatstg->cbSize) == 0)
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return HRESULT_FROM_WIN32(GetLastError());
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return S_OK;
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}
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private:
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HANDLE _hFile;
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LONG _refcount;
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};
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HRESULT WriteAttributes(IXmlReader* pReader)
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{
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const WCHAR* pwszPrefix;
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const WCHAR* pwszLocalName;
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const WCHAR* pwszValue;
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const WCHAR* pwszNamespaceUri;
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HRESULT hr = pReader->MoveToFirstAttribute();
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if (S_FALSE == hr)
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return hr;
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if (S_OK != hr)
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{
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wprintf(L"\nXmlLite Error: %08.8lx\n", hr);
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return hr;
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}
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if (S_OK == hr)
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{
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for (;;)
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{
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if (!pReader->IsDefault())
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{
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UINT cwchPrefix;
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if (FAILED(hr = pReader->GetPrefix(&pwszPrefix, &cwchPrefix)))
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{
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wprintf(L"Error getting prefix, error is %08.8lx", hr);
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return hr;
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}
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if (FAILED(hr = pReader->GetLocalName(&pwszLocalName, NULL)))
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{
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wprintf(L"Error, Method: GetLocalName, error is %08.8lx", hr);
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return hr;
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}
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if (FAILED(hr = pReader->GetValue(&pwszValue, NULL)))
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{
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wprintf(L"Error, Method: GetValue, error is %08.8lx", hr);
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return hr;
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}
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if (cwchPrefix > 0)
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wprintf(L"%s:%s=\"%s\" ", pwszPrefix, pwszLocalName, pwszValue);
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else
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wprintf(L"%s=\"%s\" ", pwszLocalName, pwszValue);
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if (FAILED(hr = pReader->GetNamespaceUri(&pwszNamespaceUri, NULL)))
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{
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wprintf(L"Error, Method: GetNamespaceUri, error is %08.8lx", hr);
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return hr;
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}
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wprintf(L"Namespace=%s\n", pwszNamespaceUri);
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}
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if (S_OK != pReader->MoveToNextAttribute())
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break;
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}
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}
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return hr;
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}
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int __cdecl wmain(int argc, _In_reads_(argc) WCHAR* argv[])
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{
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HRESULT hr = S_OK;
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IStream *pFileStream = NULL;
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IXmlReader *pReader = NULL;
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XmlNodeType nodetype;
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const WCHAR* pwszPrefix;
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const WCHAR* pwszLocalName;
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const WCHAR* pwszNamespaceUri;
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UINT cwchPrefix;
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if (argc != 2)
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{
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wprintf(L"Usage: XmlLiteNamespaceReader.exe name-of-input-file\n");
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return 0;
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}
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//Open read-only input stream
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if (FAILED(hr = FileStream::OpenFile(argv[1], &pFileStream, FALSE)))
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{
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wprintf(L"Error creating file reader, error is %08.8lx", hr);
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HR(hr);
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}
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if (FAILED(hr = CreateXmlReader(__uuidof(IXmlReader), (void**) &pReader, NULL)))
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{
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wprintf(L"Error creating xml reader, error is %08.8lx", hr);
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HR(hr);
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}
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if (FAILED(hr = pReader->SetInput(pFileStream)))
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{
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wprintf(L"Error setting input for reader, error is %08.8lx", hr);
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HR(hr);
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}
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while (true)
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{
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hr = pReader->Read(&nodetype);
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if (S_FALSE == hr)
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break;
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if (S_OK != hr)
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{
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wprintf(L"\nXmlLite Error: %08.8lx\n", hr);
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HR(hr);
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}
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switch (nodetype)
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{
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case XmlNodeType_Element:
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if (FAILED(hr = pReader->GetPrefix(&pwszPrefix, &cwchPrefix)))
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{
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wprintf(L"Error, Method: GetPrefix, error is %08.8lx", hr);
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HR(hr);
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}
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if (FAILED(hr = pReader->GetLocalName(&pwszLocalName, NULL)))
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{
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wprintf(L"Error, Method: GetLocalName, error is %08.8lx", hr);
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HR(hr);
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}
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if (cwchPrefix > 0)
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wprintf(L"%s:%s ", pwszPrefix, pwszLocalName);
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else
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wprintf(L"%s ", pwszLocalName);
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if (FAILED(hr = pReader->GetNamespaceUri(&pwszNamespaceUri, NULL)))
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{
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wprintf(L"Error, Method: GetNamespaceUri, error is %08.8lx", hr);
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HR(hr);
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}
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wprintf(L"Namespace=%s\n", pwszNamespaceUri);
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if (FAILED(hr = WriteAttributes(pReader)))
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{
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wprintf(L"Error, Method: WriteAttributes, error is %08.8lx", hr);
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HR(hr);
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}
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break;
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}
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}
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wprintf(L"\n");
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CleanUp:
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SAFE_RELEASE(pFileStream);
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SAFE_RELEASE(pReader);
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return hr;
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}
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