我的问题crossreferrer with [question] Visual C#: Move multiple files with the same extensions into another directory 但我还有最大的问题 - 我的目录包含超过300万个文件。 C#with .GetFiles()无法解决我的问题。 我认为,只有使用C ++我才能做到。 算法
目标:将所有文件从src-dir(300万)移动到一些目标dir,包含10万个文件。
请帮我编码 - 我不懂C ++(VS 2010)
这是我的代码
`int _tmain(int argc, TCHAR *argv[])
{
WIN32_FIND_DATA ffd;
LARGE_INTEGER filesize;
TCHAR szDir[MAX_PATH];
TCHAR szNewDir[MAX_PATH];
TCHAR szNewDirEx[MAX_PATH];
size_t length_of_arg;
HANDLE hFind = INVALID_HANDLE_VALUE;
DWORD dwError=0;
DWORD dwFiles = 0;
DWORD dwDirs = 0;
// If the directory is not specified as a command-line argument,
// print usage.
if(argc != 2)
{
_tprintf(TEXT("\nUsage: %s <directory name>\n"), argv[0]);
return (-1);
}
// Check that the input path plus 3 is not longer than MAX_PATH.
// Three characters are for the "\*" plus NULL appended below.
StringCchLength(argv[1], MAX_PATH, &length_of_arg);
if (length_of_arg > (MAX_PATH - 3))
{
_tprintf(TEXT("\nDirectory path is too long.\n"));
return (-1);
}
_tprintf(TEXT("\nTarget directory is %s\n\n"), argv[1]);
// Prepare string for use with FindFile functions. First, copy the
// string to a buffer, then append '\*' to the directory name.
StringCchCopy(szDir, MAX_PATH, argv[1]);
StringCchCat(szDir, MAX_PATH, TEXT("\\*"));
StringCchCopy(szNewDir, MAX_PATH, argv[1]);
StringCchCat(szNewDir, MAX_PATH, TEXT("\\dir"));
StringCchCat(szNewDirEx, MAX_PATH, szNewDir);
// Find the first file in the directory.
hFind = FindFirstFile(szDir , &ffd);
if (INVALID_HANDLE_VALUE == hFind)
{
DisplayErrorBox(TEXT("FindFirstFile"));
return dwError;
}
// List all the files in the directory with some info about them.
do
{
if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
_tprintf(TEXT(" %s <DIR>\n"), ffd.cFileName);
}
else
{
if(dwFiles == 0) {
StringCchCat(szNewDirEx, MAX_PATH, TEXT(dwDirs));
CreateDir(szNewDirEx); //dwDirs toString
}
if (!MoveFileEx(__OLDDIR__ + ffd.cFileName, szNewDirEx + ffd.cFileName, MOVEFILE_WRITE_THROUGH))
{
printf ("MoveFileEx failed with error %d\n", GetLastError());
return;
} else {
dwFiles++;
if (dwFiles == 50000) {
dwDirs++;
dwFiles = 0;
}
}
}
}
while (FindFirstFile(hFind, &ffd) != 0);
dwError = GetLastError();
if (dwError != ERROR_NO_MORE_FILES)
{
DisplayErrorBox(TEXT("FindFirstFile"));
}
FindClose(hFind);
return dwError;
}
答案 0 :(得分:0)
我在How to use DirectoryInfo.GetFiles and have it stop after finding the first match?找到了解决我的任务的方法。我将尝试在我的目录中运行它,稍后将发布结果。
完整。线程链接中的代码完美无缺。