mfc 文件 文件夹操作大全

1.创建文件夹

CreateDirectory(%%1,NULL);

2.创建文件

CFile file;

file.Open(%%1,CFile::modeCreate|CFile::modeWrite);

3.删除文件

DeleteFile(%%1);

4.删除文件夹

RemoveDirectory(%%1);

5.删除一个目录下所有的文件夹

CFileFind finder;

CString path;

path.Format("%s\\*.*",%%1);

BOOL bWorking = finder.FindFile(path);

while (bWorking)

{

bWorking = finder.FindNextFile();

if (finder.IsDirectory())

{

RemoveDirectory(finder.GetFilePath());

}

}

6.清空文件夹

RemoveDirectory(%%1);

CreateDirectory(%%1,NULL);

7.读取文件

char sRead[5120];

CFile mFile(_T(%%1),CFile::modeRead);

while (sRead!=NULL)

{

mFile.Read(sRead,5120);

CString %%2(sRead);

%%3

}

mFile.Close();

if (GetLastError() == ERROR_NO_MORE_FILES)

{

//遍历文件夹完成

fFinished = TRUE;

}

else

{

//找不到下一个文件

return;

}

}

}

FindClose(hSearch);

}

}

15.移动文件夹

WIN32_FIND_DATA FileData;

HANDLE hSearch;

DWORD dwAttrs;

char szDirPath[] = %%2;

char szNewPath[MAX_PATH];

char szHome[MAX_PATH];

BOOL fFinished = FALSE;

if (!CreateDirectory(szDirPath, NULL))

{

//不能创建新的目录

return;

}

CString path;

path.Format("%s\\*.*",%%1);

hSearch = FindFirstFile(path, &FileData);

if (hSearch == INVALID_HANDLE_VALUE)

{

return;

}

while (!fFinished)

{

lstrcpy(szNewPath, szDirPath);

lstrcat(szNewPath, FileData.cFileName);

if (CopyFile(FileData.cFileName, szNewPath, FALSE))

{

dwAttrs = GetFileAttributes(FileData.cFileName);

if (!(dwAttrs & FILE_ATTRIBUTE_READONLY))

{

SetFileAttributes(szNewPath,

dwAttrs | FILE_ATTRIBUTE_READONLY);

}

}

else

{

//不能复制文件

return;

}

if (!FindNextFile(hSearch, &FileData))

{

if (GetLastError() == ERROR_NO_MORE_FILES)

{

//遍历文件夹完成

fFinished = TRUE;

}

else

{

//找不到下一个文件

return;

}

}

}

FindClose(hSearch);

RemoveDirectory(%%1); 16.移动一个文件夹下所有的文件夹到另一个目录下

WIN32_FIND_DATA FileData;

HANDLE hSearch;

DWORD dwAttrs;

char szDirPath[] = %%2;

char szNewPath[MAX_PATH];

char szHome[MAX_PATH];

BOOL fFinished = FALSE;

if (!CreateDirectory(szDirPath,NULL))

{

//不能创建新的目录

return;

}

CString path;

path.Format("%s\\*.*",%%1);

BOOL bWorking = finder.FindFile(path);

while (bWorking)

{

bWorking = finder.FindNextFile();

if(finder.IsDirectory()){

hSearch = FindFirstFile(finder.GetFilePath()+"\\*.*", &FileData);

if (hSearch == INVALID_HANDLE_VALUE)

{

return;

}

while (!fFinished)

{

lstrcpy(szNewPath, szDirPath);

lstrcat(szNewPath, FileData.cFileName);

if (CopyFile(FileData.cFileName, szNewPath, FALSE))

{

dwAttrs = GetFileAttributes(FileData.cFileName);

if (!(dwAttrs & FILE_ATTRIBUTE_READONLY))

{

SetFileAttributes(szNewPath,

dwAttrs | FILE_ATTRIBUTE_READONLY);

}

}

else

{

//不能复制文件

return;

}

if (!FindNextFile(hSearch, &FileData))

{

if (GetLastError() == ERROR_NO_MORE_FILES)

{

//遍历文件夹完成

fFinished = TRUE;

}

else

{

//找不到下一个文件

return;

}

}

}

FindClose(hSearch);

RemoveDirectory(finder.GetFilePath().GetBuffer(0));

}

} 17.以一个文件夹的框架在另一个目录创建文件夹和空文件

WIN32_FIND_DATA FileData;

HANDLE hSearch;

DWORD dwAttrs;

char szDirPath[] = %%2;

char szNewPath[MAX_PATH];

char szHome[MAX_PATH];

BOOL fFinished = FALSE;

if (!CreateDirectory(szDirPath, NULL))

{

//不能创建新的目录

return;

}

CString path;

path.Format("%s\\*.*",%%1);

hSearch = FindFirstFile(path, &FileData);

if (hSearch == INVALID_HANDLE_VALUE)

{

return;

}

while (!fFinished)

{

lstrcpy(szNewPath, szDirPath);

lstrcat(szNewPath, FileData.cFileName);

HANDLE hFile=CreateFileHandle hFile=CreateFile(szNewPath,GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL|FILE_FLAG_SEQUENTIAL_SCAN,NULL);

if(!hFile)

{

//不能创建文件

return;

}

if (!FindNextFile(hSearch, &FileData))

{

if (GetLastError() == ERROR_NO_MORE_FILES)

{

//遍历文件夹完成

fFinished = TRUE;

}

else

{

//找不到下一个文件

return;

}

}

}

FindClose(hSearch);

18.复制文件

CopyFile(%%1,%%2,true);19.复制一个文件夹下所有的文件到另一个目录

//#include <string>

using std::string;

char sep='/';

#ifdef _WIN32

sep='\\';

#endif

CFileFind finder;

CString path;

path.Format("%s\\*.*",%%1);

BOOL bWorking = finder.FindFile(path);

while (bWorking)

{

bWorking = finder.FindNextFile();

if(!finder.IsDirectory() || finder.IsDots()){

string s(finder.GetFileName());

CString sourcefile(%%1);

if(s.rfind(sep,s.length())!=string::npos)

{

sourcefile=sourcefile+"//"+s.substr(i+1,s.length()-i);

CString targetfile(s.substr(i+1,s.length()-i));

targetfile=%%2+"//"+targetfile/;

CopyFile(sourcefile.GetBuffer(0),targetfile.GetBuffer(0),true);

}

}

}

20.提取扩展名

CString path(%%1);

CString %%2=path.Mid(path.ReverseFind('.'));

21.提取文件名

CString path(%%1);

CString %%2=path.Mid(path.ReverseFind('\\')+1);

22.提取文件路径

char appName[MAX_PATH];

GetModualFileName(NULL,appName,MAX_PATH);23.替换扩展名

//#include <string>

using std::string;

string s(%%1);

string newExt(%%2);

string::size_type i=s.rfind('.',s.length());

if(i!=string::npos)

s.replace(i+1,newExt.length(),newExt);

CString %%3(s);

24.追加路径

/*

#include <string>

#include <cstdlib>

#include <boost/filesystem/operations.hpp>

#include <boost/filesystem/fstream.hpp>

*/

using namespace std;

using namespace boost::filesystem;

try {

path p1=complete(path(%%2,native),

path(%%1,native));

path p2=system_complete(path(%%2,native));

CString %%3(p3);

}

catch(exception& e){

//e.what();

}

25.移动文件

MoveFile(%%1,%%2); 26.移动一个文件夹下所有文件到另一个目录

//#include <string>

using std::string;

char sep='/';

#ifdef _WIN32

sep='\\';

#endif

CFileFind finder;

CString path;

path.Format("%s\\*.*",%%1);

BOOL bWorking = finder.FindFile(path);

while (bWorking)

{

bWorking = finder.FindNextFile();

if(!finder.IsDirectory() || finder.IsDots()){

string s(finder.GetFileName());

CString sourcefile(%%1);

if(s.rfind(sep,s.length())!=string::npos)

{

sourcefile=sourcefile+"//"+s.substr(i+1,s.length()-i);

CString targetfile(s.substr(i+1,s.length()-i));

targetfile=%%2+"//"+targetfile/;

MoveFile(sourcefile.GetBuffer(0),targetfile.GetBuffer(0),true);

}

}

}

27.指定目录下搜索文件

CString strFileTitle;

CFileFind finder;

BOOL bWorking = finder.FindFile(%%1); //"C:\\windows\\sysbkup\\*.cab"

while(bWorking)

{

bWorking=finder.FindNextFile();

strFileTitle=finder.GetFileTitle();

} 28.打开对话框

CFileDialog mFileDlg(TRUE,NULL,NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT|OFN_ALLOWMULTISELECT,"All Files (*.*)|*.*||",AfxGetMainWnd());

CString str(" ",10000);

mFileDlg.m_ofn.lpstrFile=str.GetBuffer(10000);

str.ReleaseBuffer();

POSITION mPos=mFileDlg.GetStartPosition();

CString pathName(" ",128);

CFileStatus status;

while(mPos!=NULL)

{

pathName=mFileDlg.GetNextPathName(mPos);

CFile::GetStatus( pathName, status );

}

29.文件分割

CFile m_File;

CString m_Filename,m_FileTitle,m_FilePath;

m_FileName=%%1;

char pBuf[4096];

if(m_File.Open(m_FileName,CFile::modeRead | CFile::shareDenyWrite))

{

m_FileName=m_File.GetPathName();

m_FileTitle=m_File.GetFileTitle();

DWORD FileLength=m_File.GetLength();

DWORD PartLength=FileLength/2+FileLength%2;

int nCount=1;

CString strName;

CFile wrFile;

DWORD ReadBytes;

while(true)

{

ReadBytes=m_File.Read(pBuf,PartLength);

strName.Format("%s%d",m_FIleTitle,nCount);

wrFile.Open(strName,CFile::modeWrite | CFile::modeCreate);

wrFile.Write(pBuf,ReadBytes);

wrFile.Close();

if(ReadBytes<PartLength)

break;

nCount++;

}

m_File.Close();

}

else

AfxMessageBox("不能打开文件"); 30.文件合并

//#include <string>

using std::string;

string s(%%1);

char sep='/';

#ifdef _WIN32

sep='\\';

#endif

size_t sz=s.rfind(sep,s.length());

if(sz!=string::npos)

{

CFile Out;

CString strFilename(s.substr(i+1,s.length()-i));

if(Out.Open(%%2+"//"+strfilename,cfile::modewrite%7ccfile::modecreate)){

for(int i=1;i<=2;i++)

{

CString Filename;

Filename.Format("%s//%s%d",%%2,strfilename,atoi(i));

CFile In;

if(In.Open(Filename,CFile::modeRead)){

char cbBuffer[4096];

int nFilesize=In.GetLength();

while(nFilesize>0){

int nSize=sizeof(cbBuffer);

if(nSize>nFilesize)

nSize=nFilesize;

try{

In.Read(cbBuffer,nSize);

}

catch(CFileException *e){

char *lpMsgBuf;

if(FormatMessage(

FORMAT_MESSAGE_ALLOCATE_BUFFER |

FORMAT_MESSAGE_FROM_SYSTEM, NULL,e->m_lOsError,

MAKELANGID(LANG_NEUTRAL,

SUBLANG_DEFAULT),

(LPSTR)&lpMsgBuf,0,NULL)>0){

AfxMessageBox(lpMsgBuf);

LocalFree(lpMsgBuf);

}

e->Delete();

return;

}

try{

Out.Write(cbBuffer,nSize);

}

catch(CFileException *e){

char *lpMsgBuf;

if(FormatMessage(

FORMAT_MESSAGE_ALLOCATE_BUFFER |

FORMAT_MESSAGE_FROM_SYSTEM,NULL,e->m_lOsError,

MAKELANGID(LANG_NEUTRAL,

SUBLANG_DEFAULT),

(LPSTR)&lpMsgBuf,0,NULL)>0){

AfxMessageBox(lpMsgBuf);

LocalFree(lpMsgBuf);

}

e->Delete();

return;

}

nFilesize=nSize;

}

}

else

AfxMessageBox("不能打开"+Filename);

}

}

}

else

AfxMessageBox("不能创建输出文件");

8.写入文件

CFile mFile(_T(%%1), CFile::modeWrite|CFile::modeCreate);

mFile.Write(%%2,sizeof(%%2));

mFile.Flush();

mFile.Close();

9.写入随机文件

char szTempPath[_MAX_PATH],szTempfile[_MAX_PATH];

GetTempPath(_MAX_PATH, szTempPath);

GetTempFileName(szTempPath,_T ("my_"),0,szTempfile);

CFile m_tempFile(szTempfile,CFile:: modeCreate|CFile:: modeWrite);

char m_char='a';

m_tempFile.Write(&m_char,2);

m_tempFile.Close();

//循环写入多个值

strTempA;

int i;

int nCount=6;

//共有6个文件名需要保存

for (i=0;i{strTemp.Format("%d",i);

strTempA=文件名;

//文件名可以从数组,列表框等处取得.

::WritePrivateProfileString("UseFileName","FileName"+strTemp,strTempA,

c:\\usefile\\usefile.ini);

}

strTemp.Format("%d",nCount);

::WritePrivateProfileString("FileCount","Count",strTemp,"c:\\usefile\\usefile.ini");

//将文件总数写入,以便读出.

//读出

nCount=::GetPrivateProfileInt("FileCount","Count",0,"c:\\usefile\\usefile.ini");

for(i=0;i{strTemp.Format("%d",i);

strTemp="FileName"+strTemp;

::GetPrivateProfileString("CurrentIni",strTemp,"default.fil", strTempA.GetBuffer(MAX_PATH),MAX_PATH,"c:\\usefile\\usefile.ini");

//使用strTempA中的内容.

}

10.读取文件属性

DWORD dwAttrs = GetFileAttributes(%%1);

if(dwAttrs & FILE_ATTRIBUTE_READONLY) {

%%2

}

if(dwAttrs & FILE_ATTRIBUTE_NORMAL){

%%3

}

11.写入属性

SetFileAttributes(%%1,dwAttrs | FILE_ATTRIBUTE_READONLY);

12.枚举一个目录下所有文件夹

CFileFind finder;

CString path;

path.Format("%s\\*.*",%%1);

BOOL bWorking = finder.FindFile(path);

while (bWorking) {

bWorking = finder.FindNextFile();

if(finder.IsDirectory()){

CString %%1=finder.GetFilePath();

%%2

}

}

13.复制文件夹

WIN32_FIND_DATA FileData;

HANDLE hSearch;

DWORD dwAttrs;

char szDirPath[] = %%2;

char szNewPath[MAX_PATH];

char szHome[MAX_PATH];

BOOL fFinished = FALSE;

if (!CreateDirectory(szDirPath, NULL)) {

//不能创建新的目录

return;

}

CString path;

path.Format("%s\\*.*",%%1);

hSearch = FindFirstFile(path, &FileData);

if (hSearch == INVALID_HANDLE_VALUE) {

return;

}

while (!fFinished) {

lstrcpy(szNewPath, szDirPath);

lstrcat(szNewPath, FileData.cFileName);

if (CopyFile(FileData.cFileName, szNewPath, FALSE)) {

dwAttrs = GetFileAttributes(FileData.cFileName);

if (!(dwAttrs & FILE_ATTRIBUTE_READONLY)) {

SetFileAttributes(szNewPath,

dwAttrs | FILE_ATTRIBUTE_READONLY);

}

}

else {

//不能复制文件

return;

}

if (!FindNextFile(hSearch, &FileData)) {

if (GetLastError() == ERROR_NO_MORE_FILES) {

//遍历文件夹完成

fFinished = TRUE;

}

else {

//找不到下一个文件

return;

}

}

}

FindClose(hSearch);

14.复制一个目录下所有的文件夹到另一个文件夹下

WIN32_FIND_DATA FileData;

HANDLE hSearch;

DWORD dwAttrs;

char szDirPath[] = %%2;

char szNewPath[MAX_PATH];

char szHome[MAX_PATH];

BOOL fFinished = FALSE;

if (!CreateDirectory(szDirPath,NULL))

{

//不能创建新的目录

return;

}

CString path;

path.Format("%s\\*.*",%%1);

BOOL bWorking = finder.FindFile(path);

while (bWorking)

{

bWorking = finder.FindNextFile();

if(finder.IsDirectory()){

hSearch = FindFirstFile(finder.GetFilePath()+"\\*.*", &FileData);

if (hSearch == INVALID_HANDLE_VALUE)

{

return;

}

while (!fFinished)

{

lstrcpy(szNewPath, szDirPath);

lstrcat(szNewPath, FileData.cFileName);

if (CopyFile(FileData.cFileName, szNewPath, FALSE))

{

dwAttrs = GetFileAttributes(FileData.cFileName);

if (!(dwAttrs & FILE_ATTRIBUTE_READONLY))

{

SetFileAttributes(szNewPath,

dwAttrs | FILE_ATTRIBUTE_READONLY);

}

}

else

{

//不能复制文件

return;

}

if (!FindNextFile(hSearch, &FileData))

{

31.文件简单加密

//#include <string>

using std::string;

string s(%%1);

char sep='/';

#ifdef _WIN32

sep='\\';

#endif

size_t sz=s.rfind(sep,s.length());

CString outfile;

if(sz!=string::npos)

{

CFile Out,In;

int nFIlesize;

char *lpMsgBuf;

CString strFilename(s.substr(i+1,s.length()-i));

if(!in.Open(%%1,CFile::modeRead)){

//不能打开输入文件

return;

}

outfile.Format("\\enc_",%%2,strfilename);

if(!Out.Open(outfile,CFile::modewrite|CFile::modeCreate)){

//不能打开输出文件

return;

}

}

nFilesize=In.GetLength();

lpBuffer=new char[nFilesize];

if(lpBuffer==NULL){

//不能分配复制缓存

return;

}

CFileStatus rStatus;

In.GetStatus(%%1,rStatus);

try{

In.Read(cbBuffer,nFilesize);

}

catch(CFileException *e){

char *lpMsgBuf;

if(FormatMessage(

FORMAT_MESSAGE_ALLOCATE_BUFFER |

FORMAT_MESSAGE_FROM_SYSTEM,

NULL,e->m_lOsError,

MAKELANGID(LANG_NEUTRAL,

SUBLANG_DEFAULT),

(LPSTR)&lpMsgBuf,0,NULL)>0){

AfxMessageBox(lpMsgBuf);

LocalFree(lpMsgBuf);

}

e->Delete();

return;

}

for(int i=0;i<nFilesize;i++)

{

int ibt=lpBuffer[i];

ibt+=100;

ibt%=256;

bpBuffer[i]=(char)ibt;

}

try{

Out.Write(cbBuffer,nFilesize);

}

catch(CFileException *e){

char *lpMsgBuf;

if(FormatMessage(

FORMAT_MESSAGE_ALLOCATE_BUFFER |

FORMAT_MESSAGE_FROM_SYSTEM,

NULL,e->m_lOsError,

MAKELANGID(LANG_NEUTRAL,

SUBLANG_DEFAULT),

(LPSTR)&lpMsgBuf,0,NULL)>0){

AfxMessageBox(lpMsgBuf);

LocalFree(lpMsgBuf);

}

e->Delete();

return;

}

Out.Close();

//In.Close();

CFile::SetStatus(outfile,rstatus);

delete[] lpBuffer;

}

32.文件简单解密

//#include <string>

using std::string;

string s(%%1);

char sep='/';

#ifdef _WIN32

sep='\\';

#endif

size_t sz=s.rfind(sep,s.length());

CString infile;

if(sz!=string::npos)

{

CFile Out,In;

int nFIlesize;

char *lpMsgBuf;

CString strFilename(s.substr(i+1,s.length()-i));

infile.Format("%s\\enc_%s",%%2,strfilename)

if(!in.Open(infile,CFile::moderead)){

//不能打开输入文件

return;

}

if(!Out.Open(%%1,CFile::modeWrite|CFile::modeCreate)){

//不能打开输出文件

return;

}

nFilesize=In.GetLength();

lpBuffer=new char[nFilesize];

if(lpBuffer==NULL){

//不能分配复制缓存

return;

}

CFileStatus rStatus;

In.GetStatus(infile,rstatus);

try{

In.Read(cbBuffer,nFilesize);

}

catch(CFileException *e){

char *lpMsgBuf;

if(FormatMessage(

FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,

NULL,e->m_lOsError,

MAKELANGID(LANG_NEUTRAL,

SUBLANG_DEFAULT),

(LPSTR)&lpMsgBuf,0,NULL)>0){

AfxMessageBox(lpMsgBuf);

LocalFree(lpMsgBuf);

}

e->Delete();

return;

}

for(int i=0;i<nFilesize;i++)

{

int ibt=lpBuffer[i];

ibt-=100;ibt+=256;

ibt%=256;

bpBuffer[i]=(char)ibt;

}

try{

Out.Write(cbBuffer,nFilesize);

}

catch(CFileException *e){

char *lpMsgBuf;

if(FormatMessage(

FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,

NULL,e->m_lOsError,

MAKELANGID(LANG_NEUTRAL,

SUBLANG_DEFAULT),

(LPSTR)&lpMsgBuf,0,NULL)>0){

AfxMessageBox(lpMsgBuf);

LocalFree(lpMsgBuf);

}

e->Delete();

return;

}

Out.Close();

//In.Close();

CFile::SetStatus(%%1,rStatus);

delete[] lpBuffer;

}

33.读取ini文件属性

CStdioFile inifile(%%1,CFile::modeRead);

CString path = inifile.GetFilePath();

inifile.Close();

char key[1024];

DWORD bytes = GetPrivateProfileString(%%2,%%3,%%4,key,1024,path);

if(bytes < 1024)

key[bytes] = '\0';

CString %%5(key);

34.合并一个目录下所有的文件

CString Directory;

Directory.Format("%s\\*.*",%%1);

CFileFind FFile;

CFile Out;

if(Out.Open(%%2,CFile::modeWrite|CFile::modeCreate)){

BOOL bFound=FFile.FindFile(Directory);

while(bFound)

{

bFound=FFile.FileNextFile();

if(!FFile.IsDirectory() && !FFile.IsDots())

{

CString Filename=FFile.GetFileName();

CFile In;

if(In.Open(Filename,CFile::modeRead)){

char cbBuffer[4096];

int nFIlesize=In.GetLength();

while(nFIlesize>0){

{

int nSize=sizeof(cbBuffer);

if(nSize>nFilesize)

nSize=nFilesize;

try {

In.Read(cbBuffer,nSize);

}

catch(CFileException *e){

char *lpMsgBuf;

if(FormatMessage(

FORMAT_MESSAGE_ALLOCATE_BUFFER |

FORMAT_MESSAGE_FROM_SYSTEM,

NULL,e->m_lOsError,

MAKELANGID(LANG_NEUTRAL,

SUBLANG_DEFAULT),

(LPSTR)&lpMsgBuf,0,NULL)>0){

AfxMessageBox(lpMsgBuf);

LocalFree(lpMsgBuf);

}

e->Delete();

return;

}

try {

Out.Write(cbBuffer,nSize);

}

catch(CFileException *e){

char *lpMsgBuf;

19楼

if(FormatMessage(

FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,

NULL,e->m_lOsError,

MAKELANGID(LANG_NEUTRAL,

SUBLANG_DEFAULT),

(LPSTR)&lpMsgBuf,0,NULL)>0){

AfxMessageBox(lpMsgBuf);

LocalFree(lpMsgBuf);

}

e->Delete();

return;

}

nFilesize=nSize;

}

}

else

AfxMessageBox("不能打开"+Filename);

}

}

}

}

else

AfxMessageBox("不能创建输出文件");

35.写入ini文件属性

/*

CStdioFile inifile(%%1,CFile::modeRead);

CString path = inifile.GetFilePath();

inifile.Close();

int bytes = GetPrivateProfileInt(%%2,%%3,%%4,path);

*/

WritePrivateProfileString(%%2,%%3,%%4,path);

36.获得当前路径

TCHAR szDir[MAX_PATH];

GetCurrentDirectory(MAX_PATH,szDir);

CString %%1;

%%1.Format("%s",szDir);

37.读取XML数据库

/*

#include <string>

using namespace std;

*/

char sRead[5192];

const char* name="Name";

const char* name2="author";

const char* root="ProductData";

const char* subNodeTag="Product";

const char* ID="pid";

//%%2="ProductData" //%%4="pid" //%%6="author"

//%%3="Product" //%%5="Name"

char sRead[5192];

CFile mFile(_T(%%1),CFile::modeRead);

mFile.Read(sRead,5192);

if(sRead!=NULL)

{

string tmp;

while(sRead!=NULL)

{

tmp.append(sRead);

mFile.Read(sRead,5192);

}

string target("001"),globalTag;globalTag.append("<");globalTag.append

oot);globalTag.append(">");

string propTag1;propTag1.append("<");propTag1.append(name);propTag1.append(">");

string endTag1;endTag1.append("</");endTag1.append(name);endTag1.append(">");

string propTag2;propTag2.append("<");propTag2.append(name2);propTag2.append(">");

string endTag2;endTag2.append("</");endTag2.append(name2);endTag2.append(">");

int offset=tmp.find_first_of(globalTag);

while(offset)

{

offset=tmp.find_first_of(globalTag);

string description;

tmp.copy(description.begin(),tmp.find_first_of("\"",offset+1)-offset);

if(target.compare(description)==0)

{

string prop,prop2;

offset=tmp.find_first_of(propTag1,offset)+strlen(name)+2;

tmp.copy(prop.begin(),tmp.find_first_of(endTag1,offset)- offset,offset);

offset=tmp.find_first_of(propTag2,offset)+strlen(name2)+2;

tmp.copy(prop2.begin(),tmp.find_first_of(endTag2,offset)-offset,offset);

//CString %%8(prop),%%9(prop2);

//%%10

return 0;

}

}

}

else

return -1;

38.写入XML数据库

/*

#include <string>

using namespace std;

*/

char sRead[5192];

int no;

const char* name="Name";

const char* name2="author";

const char* root="ProductData";

const char* subNodeTag="Product";

const char* ID="pid";

//%%2="ProductData" //%%4="pid" //%%6="port"

//%%3="Product" //%%5="Name" //%%7="author"

CString temp;

char sRead[5192];

string description;

CFile mFile(_T(%%1),CFile::modeRead);

mFile.Read(sRead,5192);

if(sRead!=NULL)

{

string tmp;

while(sRead!=NULL)

{

tmp.append(sRead);

memset(sRead,0,5192);

mFile.Read(sRead,5192);

}

temp.Format("<%s %s",subNodeTag,ID);

int offset=tmp.find_last_of(temp)+strlen(subNodeTag) +strlen(ID)+4;

temp.Format("\"><%s",name);

tmp.copy(description.begin(),tmp.find_last_of(temp)- offset,offset);

no=atoi(description.c_str())+1;

mFile.Close();

temp.Format("</%s>",root);

CString temp2;

temp2.Format("<%s %s=\"%d\"><%s>%s</%s><%s>%s</%

s",subNodeTag,ID,no,name,"bbbbbbbbbbbbbbbb",name,name2,"cccccccccccccc",name2);

tmp.insert(tmp.find_last_of(temp),temp2);

CFile file(_T("Produces.xml"),CFile::modeWrite);

file.Write(tmp.c_str(),tmp.size());

file.Flush();

file.Close();

}

else

{

CFile file(_T(%%1),CFile::modeWrite|CFile::modeCreate);

temp.Format("<?xml version=\"1.0\" encoding=\"gb2312\"?><%s><%s %s=\"0\"><%s>%s</%s><%s>%

s</%s></%s></%s>",root,subNodeTag,ID,name,"bbbbbbbbbbbbbbbb",name,name2,"cccccccccccccc",name2,subNodeTag,root);

file.Write(temp.GetBuffer(0),temp.GetLength());

file.Flush();

file.Close();

}

39.ZIP压缩文件

//www.zlib.net

/*

#ifdef _DEBUG

#pragma comment(lib,"zlibd.lib")

#else

#pragma comment(lib,"zlib.lib")

#endif

#include "zlib.h"

#include "zconf.h"

*/

HANDLE hFile, hFileToWrite;

CString strFilePath;

m_ctrEdit.GetWindowText(strFilePath);

//打开要进行压缩的文件

hFile = CreateFile(strFilePath, // file name

GENERIC_READ, // open for reading

FILE_SHARE_READ, // share for reading

NULL, // no security

OPEN_EXISTING, // existing file only

FILE_ATTRIBUTE_NORMAL, // normal file

NULL); // no attr. template

if (hFile == INVALID_HANDLE_VALUE)

{

AfxMessageBox("Could not open file to read"); // process error

return;

}

HANDLE hMapFile, hMapFileToWrite;

//创建一个文件映射

hMapFile = CreateFileMapping(hFile, // Current file handle.

NULL, // Default security.

PAGE_READONLY, // Read/write permission.

0, // Max. object size.

0, // Size of hFile.

"ZipTestMappingObjectForRead"); // Name of mapping object.

if (hMapFile == NULL)

{

AfxMessageBox("Could not create file mapping object");

return;

}

LPVOID lpMapAddress, lpMapAddressToWrite;

//创建一个文件映射的视图用来作为source

lpMapAddress = MapViewOfFile(hMapFile, // Handle to mapping object.

FILE_MAP_READ, // Read/write permission

24楼

0, // Max. object size.

0, // Size of hFile.

0); // Map entire file.

if (lpMapAddress == NULL)

{

AfxMessageBox("Could not map view of file");

return;

}

DWORD dwFileLength,dwFileLengthToWrite;

dwFileLength = GetFileSize(hFile, NULL);

m_dwSourceFileLength = dwFileLength;

//因为压缩函数的输出缓冲必须比输入大0.1% + 12 然后一个DWORD用来保存压缩前的大小，

// 解压缩的时候用，当然还可以保存更多的信息，这里用不到

dwFileLengthToWrite = (double)dwFileLength*1.001 + 12 +sizeof(DWORD);

//以下是创建一个文件，用来保存压缩后的文件

hFileToWrite = CreateFile("demoFile.rar", // demoFile.rar

GENERIC_WRITE|GENERIC_READ, // open for writing

0, // do not share

NULL, // no security

CREATE_ALWAYS, // overwrite existing

FILE_ATTRIBUTE_NORMAL , // normal file

NULL); // no attr. template

if (hFileToWrite == INVALID_HANDLE_VALUE)

{

AfxMessageBox("Could not open file to write"); // process error

return;

}

hMapFileToWrite = CreateFileMapping(hFileToWrite, // Current file handle.

NULL, // Default security.

PAGE_READWRITE, // Read/write permission.

0, // Max. object size.

dwFileLengthToWrite, // Size of hFile.

"ZipTestMappingObjectForWrite"); // Name of mapping object.

if (hMapFileToWrite == NULL)

{

AfxMessageBox("Could not create file mapping object for write");

return;

}

lpMapAddressToWrite = MapViewOfFile(hMapFileToWrite, //Handle to mapping object.FILE_MAP_WRITE, // Read/write permission

0, // Max. object size.

0, // Size of hFile.

0); // Map entire file.

if (lpMapAddressToWrite == NULL)

{

AfxMessageBox("Could not map view of file");

return;

}

//这里是将压缩前的大小保存在文件的第一个DWORD里面

LPVOID pBuf = lpMapAddressToWrite;

(*(DWORD*)pBuf) = dwFileLength;

pBuf = (DWORD*)pBuf + 1;

//这里就是最重要的，zlib里面提供的一个方法，将源缓存的数据压缩至目的缓存

//原形如下：

//int compress (Bytef *dest, uLongf *destLen, const Bytef*source, uLong sourceLen);

//参数destLen返回实际压缩后的文件大小。

compress((Bytef*)pBuf,&dwFileLengthToWrite, (Bytef*)lpMapAddress, dwFileLength);

UnmapViewOfFile(lpMapAddress);

CloseHandle(hMapFile);

CloseHandle(hFile);

UnmapViewOfFile(lpMapAddressToWrite);

CloseHandle(hMapFileToWrite);

//这里将文件大小重新设置一下

SetFilePointer(hFileToWrite,dwFileLengthToWrite + sizeof(DWORD) ,NULL,FILE_BEGIN);

SetEndOfFile(hFileToWrite);

CloseHandle(hFileToWrite);

40.ZIP解压缩

//www.zlib.net

/*

#ifdef _DEBUG

#pragma comment(lib,"zlibd.lib")

#else

#pragma comment(lib,"zlib.lib")

#endif

#include "zlib.h"

#include "zconf.h"

*/

HANDLE hFile, hFileToWrite;

CString strFilePath=%%1;

//打开要进行解压缩的文件

hFile = CreateFile(strFilePath, // file name

GENERIC_READ, // open for reading

FILE_SHARE_READ, // share for reading

NULL, // no security

OPEN_EXISTING, // existing file only

FILE_ATTRIBUTE_NORMAL, // normal file

NULL

); // no attr. template

if (hFile == INVALID_HANDLE_VALUE)

{

AfxMessageBox("Could not open file to read"); // process error

return;

}

HANDLE hMapFile, hMapFileToWrite;

//创建一个文件映射

hMapFile = CreateFileMapping(hFile, // Current file handle.

NULL, // Default security.

PAGE_READONLY, // Read/write permission.

0, // Max. object size.

0, // Size of hFile.

"ZipTestMappingObjectForRead"); // Name of mapping object.

if (hMapFile == NULL)

{

AfxMessageBox("Could not create file mapping object");

return;

}

LPVOID lpMapAddress, lpMapAddressToWrite;

//创建一个文件映射的视图用来作为source

lpMapAddress = MapViewOfFile(hMapFile, // Handle to mapping

object.FILE_MAP_READ, // Read/write permission

0, // Max. object size.

0, // Size of hFile.

0); // Map entire file.

if (lpMapAddress == NULL)

{

AfxMessageBox("Could not map view of file");

return;

}

DWORD dwFileLength,dwFileLengthToWrite;

dwFileLength = GetFileSize(hFile, NULL) - sizeof(DWORD);

//因为压缩函数的输出缓冲必须比输入大0.1% + 12 然后一个DWORD用来保存压缩前的大小，

// 解压缩的时候用，当然还可以保存更多的信息，这里用不到

// dwFileLengthToWrite = (double)dwFileLength*1.001 + 12 +sizeof(DWORD);

dwFileLengthToWrite = (*(DWORD*)lpMapAddress);

LPVOID pSourceBuf = lpMapAddress;

pSourceBuf = (DWORD*)pSourceBuf + 1;

//以下是创建一个文件，用来保存压缩后的文件

hFileToWrite = CreateFile(%%2, // create demo.gz

GENERIC_WRITE|GENERIC_READ, // open for writing

0, // do not share

NULL, // no security

CREATE_ALWAYS, // overwrite existing

FILE_ATTRIBUTE_NORMAL , // normal file

NULL

); // no attr. template

if (hFileToWrite == INVALID_HANDLE_VALUE)

{

AfxMessageBox("Could not open file to write"); //process error

return;

}

hMapFileToWrite = CreateFileMapping(hFileToWrite, // Currentfile handle.

NULL, // Default security.

PAGE_READWRITE, // Read/write permission.

0, // Max. object size.

dwFileLengthToWrite, // Size of hFile.

"ZipTestMappingObjectForWrite"); // Name of mapping object.

if (hMapFileToWrite == NULL)

{

AfxMessageBox("Could not create file mapping object for write");

return;

}

lpMapAddressToWrite = MapViewOfFile(hMapFileToWrite, //Handle to mapping object.

FILE_MAP_WRITE, // Read/write permission

0, // Max. object size.

0, // Size of hFile.

0

); // Map entire file.

if (lpMapAddressToWrite == NULL)

{

AfxMessageBox("Could not map view of file");

return;

}

//这里是将压缩前的大小保存在文件的第一个DWORD里面

LPVOID pBuf = lpMapAddressToWrite;

//这里就是最重要的，zlib里面提供的一个方法，将源缓存的数据压缩至目的缓存

//原形如下：

//int compress (Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen);

//参数destLen返回实际压缩后的文件大小。

uncompress((Bytef*)pBuf,&dwFileLengthToWrite, (Bytef*)pSourceBuf, dwFileLength);

UnmapViewOfFile(lpMapAddress);

CloseHandle(hMapFile);

CloseHandle(hFile);

UnmapViewOfFile(lpMapAddressToWrite);

CloseHandle(hMapFileToWrite);

//这里将文件大小重新设置一下

SetFilePointer(hFileToWrite,dwFileLengthToWrite,NULL,FILE_BEGIN);

SetEndOfFile(hFileToWrite);

CloseHandle(hFileToWrite);