本文主要是介绍C++ 调用7z SDK 解压，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
7z SDK 解压编译后，可以用"C 模式"解压，也可以用"CPP 模式"。C可以在内存中解压，但是很多时候不成功，是由于malloc分配不到内存。CPP不用担心内存问题，但是它解压的时候占用CPU较高。
代码：
// Test7z.cpp : 定义控制台应用程序的入口点。
//#include "stdafx.h"
#include "Common/IntToString.h"
#include "Common/MyInitGuid.h"
#include "Common/StringConvert.h"#include "Windows/DLL.h"
#include "Windows/FileDir.h"
#include "Windows/FileFind.h"
#include "Windows/FileName.h"
#include "Windows/NtCheck.h"
#include "Windows/PropVariant.h"
#include "Windows/PropVariantConversions.h"#include "7Z/CPP/7zip/Common/FileStreams.h"#include "7Z/CPP/7zip/Archive/IArchive.h"#include "7Z/CPP/7zip/IPassword.h"
#include "7Z/CPP/7zip/MyVersion.h"// use another CLSIDs, if you want to support other formats (zip, rar, ...).
// {23170F69-40C1-278A-1000-000110070000}
DEFINE_GUID(CLSID_CFormat7z, 0x23170F69, 0x40C1, 0x278A, 0x10, 0x00, 0x00, 0x01, 0x10, 0x07, 0x00, 0x00);using namespace NWindows;typedef UINT32 (WINAPI * CreateObjectFunc)(const GUID *clsID, const GUID *interfaceID, void **outObject);void PrintString(const UString &s)
{printf("%s", (LPCSTR)GetOemString(s));
}
void PrintString(const AString &s)
{printf("%s", (LPCSTR)s);
}
void PrintNewLine()
{PrintString("\n");
}
void PrintStringLn(const AString &s)
{PrintString(s);PrintNewLine();
}
void PrintError(const AString &s)
{PrintNewLine();PrintString(s);PrintNewLine();
}static HRESULT IsArchiveItemProp(IInArchive *archive, UInt32 index, PROPID propID, bool &result)
{NCOM::CPropVariant prop;RINOK(archive->GetProperty(index, propID, &prop));if (prop.vt == VT_BOOL){result = VARIANT_BOOLToBool(prop.boolVal);}else if (prop.vt == VT_EMPTY){result = false;}else{return E_FAIL;}return S_OK;
}
static HRESULT IsArchiveItemFolder(IInArchive *archive, UInt32 index, bool &result)
{return IsArchiveItemProp(archive, index, kpidIsDir, result);
}static const wchar_t *kEmptyFileAlias = L"[Content]";//
// Archive Open callback classclass CArchiveOpenCallback: public IArchiveOpenCallback, public ICryptoGetTextPassword, public CMyUnknownImp
{
public:MY_UNKNOWN_IMP1(ICryptoGetTextPassword)STDMETHOD(SetTotal)(const UInt64 *files, const UInt64 *bytes);STDMETHOD(SetCompleted)(const UInt64 *files, const UInt64 *bytes);STDMETHOD(CryptoGetTextPassword)(BSTR *password);bool PasswordIsDefined;UString Password;CArchiveOpenCallback() : PasswordIsDefined(false) {}
};STDMETHODIMP CArchiveOpenCallback::SetTotal(const UInt64 * /* files */, const UInt64 * /* bytes */)
{return S_OK;
}
STDMETHODIMP CArchiveOpenCallback::SetCompleted(const UInt64 * /* files */, const UInt64 * /* bytes */)
{return S_OK;
}
STDMETHODIMP CArchiveOpenCallback::CryptoGetTextPassword(BSTR *password)
{if (!PasswordIsDefined){// You can ask real password here from user// Password = GetPassword(OutStream);// PasswordIsDefined = true;PrintError("Password is not defined");return E_ABORT;}return StringToBstr(Password, password);
}//
// Archive Extracting callback classstatic const wchar_t *kCantDeleteOutputFile = L"ERROR: Can not delete output file ";static const char *kTestingString = "Testing ";
static const char *kExtractingString = "Extracting ";
static const char *kSkippingString = "Skipping ";static const char *kUnsupportedMethod = "Unsupported Method";
static const char *kCRCFailed = "CRC Failed";
static const char *kDataError = "Data Error";
static const char *kUnknownError = "Unknown Error";class CArchiveExtractCallback: public IArchiveExtractCallback, public ICryptoGetTextPassword, public CMyUnknownImp
{
public:MY_UNKNOWN_IMP1(ICryptoGetTextPassword)// IProgressSTDMETHOD(SetTotal)(UInt64 size);STDMETHOD(SetCompleted)(const UInt64 *completeValue);// IArchiveExtractCallbackSTDMETHOD(GetStream)(UInt32 index, ISequentialOutStream **outStream, Int32 askExtractMode);STDMETHOD(PrepareOperation)(Int32 askExtractMode);STDMETHOD(SetOperationResult)(Int32 resultEOperationResult);// ICryptoGetTextPasswordSTDMETHOD(CryptoGetTextPassword)(BSTR *aPassword);private:CMyComPtr<IInArchive> _archiveHandler;UString _directoryPath; // Output directoryUString _filePath; // name inside arcvhiveUString _diskFilePath; // full path to file on diskbool _extractMode;struct CProcessedFileInfo{FILETIME MTime;UInt32 Attrib;bool isDir;bool AttribDefined;bool MTimeDefined;} _processedFileInfo;COutFileStream *_outFileStreamSpec;CMyComPtr<ISequentialOutStream> _outFileStream;public:void Init(IInArchive *archiveHandler, const UString &directoryPath);UInt64 nFilesize;UInt64 NumErrors;bool PasswordIsDefined;UString Password;CArchiveExtractCallback() : PasswordIsDefined(false) {}
};void CArchiveExtractCallback::Init(IInArchive *archiveHandler, const UString &directoryPath)
{NumErrors = 0;_archiveHandler = archiveHandler;_directoryPath = directoryPath;NFile::NName::NormalizeDirPathPrefix(_directoryPath);
}STDMETHODIMP CArchiveExtractCallback::SetTotal(UInt64 size)
{nFilesize = size;return S_OK;
}
STDMETHODIMP CArchiveExtractCallback::SetCompleted(const UInt64 * completeValue)
{printf("%.2f\n", static_cast<float>((float)(*completeValue) / (float)nFilesize * 100.0f));return S_OK;
}
STDMETHODIMP CArchiveExtractCallback::GetStream(UInt32 index, ISequentialOutStream **outStream, Int32 askExtractMode)
{*outStream = 0;_outFileStream.Release();{// Get NameNCOM::CPropVariant prop;RINOK(_archiveHandler->GetProperty(index, kpidPath, &prop));UString fullPath;if (prop.vt == VT_EMPTY){fullPath = kEmptyFileAlias;}else{if (prop.vt != VT_BSTR){return E_FAIL;}fullPath = prop.bstrVal;}_filePath = fullPath;}if (askExtractMode != NArchive::NExtract::NAskMode::kExtract){return S_OK;}{// Get AttribNCOM::CPropVariant prop;RINOK(_archiveHandler->GetProperty(index, kpidAttrib, &prop));if (prop.vt == VT_EMPTY){_processedFileInfo.Attrib = 0;_processedFileInfo.AttribDefined = false;}else{if (prop.vt != VT_UI4){return E_FAIL;}_processedFileInfo.Attrib = prop.ulVal;_processedFileInfo.AttribDefined = true;}}RINOK(IsArchiveItemFolder(_archiveHandler, index, _processedFileInfo.isDir));{// Get Modified TimeNCOM::CPropVariant prop;RINOK(_archiveHandler->GetProperty(index, kpidMTime, &prop));_processedFileInfo.MTimeDefined = false;switch(prop.vt){case VT_EMPTY:{// _processedFileInfo.MTime = _utcMTimeDefault;break;}case VT_FILETIME:{_processedFileInfo.MTime = prop.filetime;_processedFileInfo.MTimeDefined = true;break;}default:{return E_FAIL;}}}{// Get SizeNCOM::CPropVariant prop;RINOK(_archiveHandler->GetProperty(index, kpidSize, &prop));bool newFileSizeDefined = (prop.vt != VT_EMPTY);UInt64 newFileSize;if (newFileSizeDefined){newFileSize = ConvertPropVariantToUInt64(prop);}}{// Create folders for fileint slashPos = _filePath.ReverseFind(WCHAR_PATH_SEPARATOR);if (slashPos >= 0){NFile::NDirectory::CreateComplexDirectory(_directoryPath + _filePath.Left(slashPos));}}UString fullProcessedPath = _directoryPath + _filePath;_diskFilePath = fullProcessedPath;if (_processedFileInfo.isDir){NFile::NDirectory::CreateComplexDirectory(fullProcessedPath);}else{NFile::NFind::CFileInfoW fi;if (fi.Find(fullProcessedPath)){if (!NFile::NDirectory::DeleteFileAlways(fullProcessedPath)){PrintString(UString(kCantDeleteOutputFile) + fullProcessedPath);return E_ABORT;}}_outFileStreamSpec = new COutFileStream;CMyComPtr<ISequentialOutStream> outStreamLoc(_outFileStreamSpec);if (!_outFileStreamSpec->Open(fullProcessedPath, CREATE_ALWAYS)){PrintString((UString)L"can not open output file " + fullProcessedPath);return E_ABORT;}_outFileStream = outStreamLoc;*outStream = outStreamLoc.Detach();}return S_OK;
}
STDMETHODIMP CArchiveExtractCallback::PrepareOperation(Int32 askExtractMode)
{_extractMode = false;switch (askExtractMode){case NArchive::NExtract::NAskMode::kExtract: _extractMode = true; break;};switch (askExtractMode){case NArchive::NExtract::NAskMode::kExtract: PrintString(kExtractingString); break;case NArchive::NExtract::NAskMode::kTest: PrintString(kTestingString); break;case NArchive::NExtract::NAskMode::kSkip: PrintString(kSkippingString); break;};PrintString(_filePath);return S_OK;
}
STDMETHODIMP CArchiveExtractCallback::SetOperationResult(Int32 operationResult)
{switch(operationResult){case NArchive::NExtract::NOperationResult::kOK:break;default:{NumErrors++;PrintString(" ");switch(operationResult){case NArchive::NExtract::NOperationResult::kUnSupportedMethod:PrintString(kUnsupportedMethod);break;case NArchive::NExtract::NOperationResult::kCRCError:PrintString(kCRCFailed);break;case NArchive::NExtract::NOperationResult::kDataError:PrintString(kDataError);break;default:PrintString(kUnknownError);}}}if (_outFileStream != NULL){if (_processedFileInfo.MTimeDefined){_outFileStreamSpec->SetMTime(&_processedFileInfo.MTime);}RINOK(_outFileStreamSpec->Close());}_outFileStream.Release();if (_extractMode && _processedFileInfo.AttribDefined){NFile::NDirectory::MySetFileAttributes(_diskFilePath, _processedFileInfo.Attrib);}PrintNewLine();return S_OK;
}
STDMETHODIMP CArchiveExtractCallback::CryptoGetTextPassword(BSTR *password)
{if (!PasswordIsDefined){// You can ask real password here from user// Password = GetPassword(OutStream);// PasswordIsDefined = true;PrintError("Password is not defined");return E_ABORT;}return StringToBstr(Password, password);
}//
// Archive Creating callback classstruct CDirItem
{UInt64 Size;FILETIME CTime;FILETIME ATime;FILETIME MTime;UString Name;UString FullPath;UInt32 Attrib;bool isDir() const {return (Attrib & FILE_ATTRIBUTE_DIRECTORY) != 0 ;}
};class CArchiveUpdateCallback: public IArchiveUpdateCallback2, public ICryptoGetTextPassword2, public CMyUnknownImp
{
public:MY_UNKNOWN_IMP2(IArchiveUpdateCallback2, ICryptoGetTextPassword2)// IProgressSTDMETHOD(SetTotal)(UInt64 size);STDMETHOD(SetCompleted)(const UInt64 *completeValue);// IUpdateCallback2STDMETHOD(EnumProperties)(IEnumSTATPROPSTG **enumerator);STDMETHOD(GetUpdateItemInfo)(UInt32 index, Int32 *newData, Int32 *newProperties, UInt32 *indexInArchive);STDMETHOD(GetProperty)(UInt32 index, PROPID propID, PROPVARIANT *value);STDMETHOD(GetStream)(UInt32 index, ISequentialInStream **inStream);STDMETHOD(SetOperationResult)(Int32 operationResult);STDMETHOD(GetVolumeSize)(UInt32 index, UInt64 *size);STDMETHOD(GetVolumeStream)(UInt32 index, ISequentialOutStream **volumeStream);STDMETHOD(CryptoGetTextPassword2)(Int32 *passwordIsDefined, BSTR *password);public:CRecordVector<UInt64> VolumesSizes;UString VolName;UString VolExt;UString DirPrefix;const CObjectVector<CDirItem> *DirItems;bool PasswordIsDefined;UString Password;bool AskPassword;bool m_NeedBeClosed;UStringVector FailedFiles;CRecordVector<HRESULT> FailedCodes;CArchiveUpdateCallback(): PasswordIsDefined(false), AskPassword(false), DirItems(0) {};~CArchiveUpdateCallback() { Finilize(); }HRESULT Finilize();void Init(const CObjectVector<CDirItem> *dirItems){DirItems = dirItems;m_NeedBeClosed = false;FailedFiles.Clear();FailedCodes.Clear();}
};STDMETHODIMP CArchiveUpdateCallback::SetTotal(UInt64 /* size */)
{return S_OK;
}
STDMETHODIMP CArchiveUpdateCallback::SetCompleted(const UInt64 * /* completeValue */)
{return S_OK;
}
STDMETHODIMP CArchiveUpdateCallback::EnumProperties(IEnumSTATPROPSTG ** /* enumerator */)
{return E_NOTIMPL;
}
STDMETHODIMP CArchiveUpdateCallback::GetUpdateItemInfo(UInt32 /* index */, Int32 *newData, Int32 *newProperties, UInt32 *indexInArchive)
{if (newData != NULL){*newData = BoolToInt(true);}if (newProperties != NULL){*newProperties = BoolToInt(true);}if (indexInArchive != NULL){*indexInArchive = (UInt32)-1;}return S_OK;
}
STDMETHODIMP CArchiveUpdateCallback::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value)
{NWindows::NCOM::CPropVariant prop;if (propID == kpidIsAnti){prop = false;prop.Detach(value);return S_OK;}{const CDirItem &dirItem = (*DirItems)[index];switch(propID){case kpidPath: prop = dirItem.Name; break;case kpidIsDir: prop = dirItem.isDir(); break;case kpidSize: prop = dirItem.Size; break;case kpidAttrib: prop = dirItem.Attrib; break;case kpidCTime: prop = dirItem.CTime; break;case kpidATime: prop = dirItem.ATime; break;case kpidMTime: prop = dirItem.MTime; break;}}prop.Detach(value);return S_OK;
}HRESULT CArchiveUpdateCallback::Finilize()
{if (m_NeedBeClosed){PrintNewLine();m_NeedBeClosed = false;}return S_OK;
}static void GetStream2(const wchar_t *name)
{PrintString("Compressing ");if (name[0] == 0){name = kEmptyFileAlias;}PrintString(name);
}STDMETHODIMP CArchiveUpdateCallback::GetStream(UInt32 index, ISequentialInStream **inStream)
{RINOK(Finilize());const CDirItem &dirItem = (*DirItems)[index];GetStream2(dirItem.Name);if (dirItem.isDir()){return S_OK;}{CInFileStream *inStreamSpec = new CInFileStream;CMyComPtr<ISequentialInStream> inStreamLoc(inStreamSpec);UString path = DirPrefix + dirItem.FullPath;if (!inStreamSpec->Open(path)){DWORD sysError = ::GetLastError();FailedCodes.Add(sysError);FailedFiles.Add(path);// if (systemError == ERROR_SHARING_VIOLATION){PrintNewLine();PrintError("WARNING: can't open file");// PrintString(NError::MyFormatMessageW(systemError));return S_FALSE;}// return sysError;}*inStream = inStreamLoc.Detach();}return S_OK;
}
STDMETHODIMP CArchiveUpdateCallback::SetOperationResult(Int32 /* operationResult */)
{m_NeedBeClosed = true;return S_OK;
}
STDMETHODIMP CArchiveUpdateCallback::GetVolumeSize(UInt32 index, UInt64 *size)
{if (VolumesSizes.Size() == 0){return S_FALSE;}if (index >= (UInt32)VolumesSizes.Size()){index = VolumesSizes.Size() - 1;}*size = VolumesSizes[index];return S_OK;
}
STDMETHODIMP CArchiveUpdateCallback::GetVolumeStream(UInt32 index, ISequentialOutStream **volumeStream)
{wchar_t temp[16];ConvertUInt32ToString(index + 1, temp);UString res = temp;while (res.Length() < 2){res = UString(L'0') + res;}UString fileName = VolName;fileName += L'.';fileName += res;fileName += VolExt;COutFileStream *streamSpec = new COutFileStream;CMyComPtr<ISequentialOutStream> streamLoc(streamSpec);if (!streamSpec->Create(fileName, false)){return ::GetLastError();}*volumeStream = streamLoc.Detach();return S_OK;
}
STDMETHODIMP CArchiveUpdateCallback::CryptoGetTextPassword2(Int32 *passwordIsDefined, BSTR *password)
{if (!PasswordIsDefined){if (AskPassword){// You can ask real password here from user// Password = GetPassword(OutStream);// PasswordIsDefined = true;PrintError("Password is not defined");return E_ABORT;}}*passwordIsDefined = BoolToInt(PasswordIsDefined);return StringToBstr(Password, password);
}//
// Main function#define NT_CHECK_FAIL_ACTION PrintError("Unsupported Windows version"); return 1;int MY_CDECL main(int numArgs, const char *args[])
{NT_CHECKint mmm = 0;while(mmm++ < 1){NWindows::NDLL::CLibrary lib;if (!lib.Load(L"7zxr.dll")){PrintError("Can not load 7-zip library");return 1;}CreateObjectFunc createObjectFunc = (CreateObjectFunc)lib.GetProc("CreateObject");if (createObjectFunc == 0){PrintError("Can not get CreateObject");return 1;}char c = 'x';UString archiveName = GetUnicodeString("E:\\123.7z");{bool listCommand;if (c == 'l'){listCommand = true;}else if (c == 'x'){listCommand = false;}else{PrintError("incorrect command");return 1;}CMyComPtr<IInArchive> archive;if (createObjectFunc(&CLSID_CFormat7z, &IID_IInArchive, (void **)&archive) != S_OK){PrintError("Can not get class object");return 1;}CInFileStream *fileSpec = new CInFileStream;CMyComPtr<IInStream> file = fileSpec;if (!fileSpec->Open(archiveName)){PrintError("Can not open archive file");return 1;}{CArchiveOpenCallback *openCallbackSpec = new CArchiveOpenCallback;CMyComPtr<IArchiveOpenCallback> openCallback(openCallbackSpec);openCallbackSpec->PasswordIsDefined = false;// openCallbackSpec->PasswordIsDefined = true;// openCallbackSpec->Password = L"1";if (archive->Open(file, 0, openCallback) != S_OK){PrintError("Can not open archive");return 1;}}if (listCommand){// List commandUInt32 numItems = 0;archive->GetNumberOfItems(&numItems);for (UInt32 i = 0; i < numItems; i++){{// Get uncompressed size of fileNWindows::NCOM::CPropVariant prop;archive->GetProperty(i, kpidSize, &prop);UString s = ConvertPropVariantToString(prop);//PrintString(s);//PrintString(" ");}{// Get name of fileNWindows::NCOM::CPropVariant prop;archive->GetProperty(i, kpidPath, &prop);UString s = ConvertPropVariantToString(prop);//PrintString(s);}//PrintString("\n");}}else{// Extract commandCArchiveExtractCallback *extractCallbackSpec = new CArchiveExtractCallback;CMyComPtr<IArchiveExtractCallback> extractCallback(extractCallbackSpec);extractCallbackSpec->Init(archive, L"e:\\XSBDownload"); // second parameter is output folder pathextractCallbackSpec->PasswordIsDefined = false;// extractCallbackSpec->PasswordIsDefined = true;// extractCallbackSpec->Password = L"1";HRESULT result = archive->Extract(NULL, (UInt32)(Int32)(-1), false, extractCallback);if (result != S_OK){PrintError("Extract Error");return 1;}}}}return 0;
}
demo:http://download.csdn.net/download/sz76211822/10039869
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