获取文件和文件夹大小

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我查到两种方法:

方法一:

WIN32_FIND_DATA fileInfo;
HANDLE hFind;
DWORD fileSize;
const char *fileName = 文件的路径及名字;
hFind = FindFirstFile(fileName ,&fileInfo);
if(hFind != INVALID_HANDLE_VALUE)
fileSize = fileInfo.nFileSizeLow;
FindClose(hFind);

方法二：

HANDLE hFile; // the file handle
DWORD dwFileSize; // temporary storage for file sizes

// Create the test file. Open it "Create Always" to overwrite any
// existing file. The data is re-created below.
hFile = CreateFile(lpcTheFile, GENERIC_READ | GENERIC_WRITE, 0, NULL,
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

if (hFile == INVALID_HANDLE_VALUE) {
printf("hFile is NULL/n");
return 4;
}
dwFileSize = GetFileSize(hFile, NULL);
printf("hFile size: %10d/n", dwFileSize);





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C和C++获取文件大小的方法总结
2008年03月31日 星期一 14:21
1.MFC中的方法：(C++)

CFileStatus status;
CFile::GetStatus("D://test.txt",status);
long lSizeOfFile;
lSizeOfFile = status.m_size;

lSizeOfFile的值就是D://test.txt文件的大小

2.标准C获得文件大小的5种方法
(注意："__FILE__"指的是当前文件，你可以改为有效路径的目标文件，比如"D://test.txt"）
#include "stdafx.h"
#include "stdio.h"
#include <sys/stat.h>
#include <io.h>
#include <FCNTL.H>

int getfilesize()
{
int iresult;
struct _stat buf;
iresult = _stat(__FILE__,&buf);
if(iresult == 0)
{
return buf.st_size;
}
return NULL;
}

int getfilesize01()
{
int fp;
fp=_open(__FILE__,_O_RDONLY);
if(fp==-1)
return NULL;
return _filelength(fp);
//return NULL;
}

int getfilesize02()
{
int fp;
fp=_open(__FILE__,_O_RDONLY);
if(fp==-1)
return NULL;
return _lseek(fp,0,SEEK_END);
//return NULL;
}

int getfilesize03()
{
int fp;
fp=_open(__FILE__,_O_RDONLY);
if(fp==-1)
return NULL;
return _lseek(fp,0,SEEK_END);
//return NULL;
}

int getfilesize04()
{
FILE *fp;
if((fp=fopen(__FILE__,"r"))==NULL)
return 0;
fseek(fp,0,SEEK_END);
return ftell(fp); //return NULL;
}

int getfilesize05()
{
FILE *fp;
char str[1];
if((fp=fopen(__FILE__,"rb"))==NULL)
return 0;
for(int i = 0;!feof(fp);i++)
{
fread(&str,1,1,fp);

}
return i - 1; //return NULL;
}

int main(int argc, char* argv[])
{

printf("getfilesize()=%d/n",getfilesize());
printf("getfilesize01()=%d/n",getfilesize01());
printf("getfilesize02()=%d/n",getfilesize02());
printf("getfilesize03()=%d/n",getfilesize03());
printf("getfilesize04()=%d/n",getfilesize04());
printf("getfilesize05()=%d/n",getfilesize05());
return 0;
}



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VC获取文件夹大小代码:

以下是代码片段：

DWORD64 GetFolderSize(LPCTSTR szPath, DWORD *dwFiles, DWORD *dwFolders)
{
TCHAR szFileFilter[512];
TCHAR szFilePath[512];
HANDLE hFind = NULL;
WIN32_FIND_DATA fileinfo;
DWORD64 dwSize = 0;

strcpy(szFilePath,szPath);
strcat(szFilePath,"//");
strcpy(szFileFilter,szFilePath);
strcat(szFileFilter,"*.*");

hFind = FindFirstFile(szFileFilter,&fileinfo);
do
{
if(fileinfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
if (!strcmp(fileinfo.cFileName,".") || !strcmp(fileinfo.cFileName,".."))
{
//Do nothing for "." and ".." folders
}
else
{
TCHAR sztmp[512];
strcpy(sztmp,szFilePath);
strcat(sztmp,fileinfo.cFileName);
dwSize = dwSize + GetFolderSize(sztmp);
if(dwFolders != NULL)
{
++(*dwFolders);
}
}
}
else
{
if(dwFiles != NULL)
{
++(*dwFiles);
}
}

dwSize += fileinfo.nFileSizeLow;

}while(FindNextFile(hFind,&fileinfo));

FindClose(hFind);
return dwSize;
}