我没有看到我出错的地方。此当前代码直接跳过closefile。没有处理任何文件,我可能只是缺少明显的东西,这是一个漫长的一天。
我的功能是搜索给定文件的硬盘(c :)。 EG example.txt。 & strFilePath here将在FindFirstFile声明中使用。
任何帮助都会被指定。
感谢。
String Copy::SearchDrive( const String& strFile, const String& strFilePath, const bool& bRecursive, const bool& bStopWhenFound ) const
{
HANDLE hFile;
WIN32_FIND_DATA file;
hFile = FindFirstFile("C:\\", &file);
String strFoundFilePath = "";
if ( hFile )
{
while ( FindNextFile( hFile, &file))
{
String strTheNameOfTheFile = file.cFileName;
// It could be a directory we are looking at
// if so look into that dir
if ( file.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY
&& bRecursive )
{
String strNewFilePath = strFilePath + "\\";
strNewFilePath += strTheNameOfTheFile;
SearchDrive( strFile, strNewFilePath, bRecursive, bStopWhenFound );
}
else
{
if ( strTheNameOfTheFile == strFile )
{
strFoundFilePath = strFilePath;
strFoundFilePath += "\\";
strFoundFilePath += strFile;
/// TODO
// ADD TO COLLECTION TYPE
if ( bStopWhenFound )
{
break;
}
}
}
}
CloseHandle( hFile );
}
return strFoundFilePath;
}
答案 0 :(得分:5)
你的代码中有很多逻辑错误。试试这个(你没有指出你正在使用哪个编译器,所以我假设C ++ Builder,它有一个大写的S String
类。如果你使用不同的编译器,根据需要调整代码):
String Copy::SearchDrive(const String& strFile, const String& strFilePath, const bool& bRecursive, const bool& bStopWhenFound) const
{
String strFoundFilePath;
WIN32_FIND_DATA file;
String strPathToSearch = strFilePath;
if (!strPathToSearch.IsEmpty())
strPathToSearch = IncludeTrailingPathDelimiter(strPathToSearch);
HANDLE hFile = FindFirstFile((strPathToSearch + "*").c_str(), &file);
if (hFile != INVALID_HANDLE_VALUE)
{
do
{
String strTheNameOfTheFile = file.cFileName;
// It could be a directory we are looking at
// if so look into that dir
if (file.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
if ((strTheNameOfTheFile != ".") && (strTheNameOfTheFile != "..") && (bRecursive))
{
strFoundFilePath = SearchDrive(strFile, strPathToSearch + strTheNameOfTheFile, bRecursive, bStopWhenFound);
if (!strFoundFilePath.IsEmpty() && bStopWhenFound)
break;
}
}
else
{
if (strTheNameOfTheFile == strFile)
{
strFoundFilePath = strPathToSearch + strFile;
/// TODO
// ADD TO COLLECTION TYPE
if (bStopWhenFound)
break;
}
}
}
while (FindNextFile(hFile, &file));
FindClose(hFile);
}
return strFoundFilePath;
}
String strFoundFilePath = SearchDrive("file.ext", "C:\\", ...);
UPDATE: SearchDrive()
的替代实现,在通过子目录递归时不会保持多个搜索句柄处于打开状态:
#include <memory>
String Copy::SearchDrive(const String& strFile, const String& strFilePath, const bool& bRecursive, const bool& bStopWhenFound) const
{
String strFoundFilePath;
WIN32_FIND_DATA file;
String strPathToSearch = strFilePath;
if (!strPathToSearch.IsEmpty())
strPathToSearch = IncludeTrailingPathDelimiter(strPathToSearch);
HANDLE hFile = FindFirstFile((strPathToSearch + "*").c_str(), &file);
if (hFile != INVALID_HANDLE_VALUE)
{
std::auto_ptr<TStringList> subDirs;
do
{
String strTheNameOfTheFile = file.cFileName;
// It could be a directory we are looking at
// if so look into that dir
if (file.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
if ((strTheNameOfTheFile != ".") && (strTheNameOfTheFile != "..") && (bRecursive))
{
if (subDirs.get() == NULL)
subDirs.reset(new TStringList);
subDirs->Add(strPathToSearch + strTheNameOfTheFile);
}
}
else
{
if (strTheNameOfTheFile == strFile)
{
strFoundFilePath = strPathToSearch + strFile;
/// TODO
// ADD TO COLLECTION TYPE
if (bStopWhenFound)
break;
}
}
}
while (FindNextFile(hFile, &file));
FindClose(hFile);
if (!strFoundFilePath.IsEmpty() && bStopWhenFound)
return strFoundFilePath;
if (subDirs.get() != NULL)
{
for (int i = 0; i < subDirs->Count; ++i)
{
strFoundFilePath = SearchDrive(strFile, subDirs->Strings[i], bRecursive, bStopWhenFound);
if (!strFoundFilePath.IsEmpty() && bStopWhenFound)
break;
}
}
}
return strFoundFilePath;
}
答案 1 :(得分:2)
您的情况不正确,您应该与INVALID_HANDLE_VALUE
if ( hFile != INVALID_HANDLE_VALUE)
除了你跳过FindFirstFile
返回的第一个匹配文件,你想要的是什么?
另外我相信您需要一个通配符c:\\*
,否则它只会匹配c:\\
本身
hFile = FindFirstFile("C:\\*", &file);