File information of the folder content.

Hi all,

I'm looking to read a folder which contain number of files. I want to get some details of those files, like Name, Size, Date Created. Those details I can see from the details view of the folder.

To start I try to find the file name as follows.

Try to find the paths of all files included in a folder as follows.

Code:

---

int CCountOne::SearchDirectory(vector &refvecFiles,const string &refcstrRootDirectory, const string &refcstrExtension, bool bSearchSubdirectories)
{
        bSearchSubdirectories = true;        // Handle the directories and subdirectories

        string strFilePath;        // Filepath
        string strExtension;// Extension
        string strPattern;        // Pattern

        HANDLE hFile;        // File handler

        WIN32_FIND_DATA FileInformation;        // File information, use relevent structure of WinAPI

// Set the path pattern
        strPattern = refcstrRootDirectory + "\\*.*";
        hFile = ::FindFirstFile(strPattern.c_str(), &FileInformation);// Get the handler pointed

        int iCount = 0;// Number of iterations

        if(hFile != INVALID_HANDLE_VALUE)
        {
                do
                {
                        if(FileInformation.cFileName[0] != '.')
                        {
                                strFilePath.erase();// Clear the exsisting path
                                strFilePath = refcstrRootDirectory + "\\" + FileInformation.cFileName;// Set the new path

                                if(FileInformation.dwFileAttributes &FILE_ATTRIBUTE_DIRECTORY)
                                {
                                       
                                        if(bSearchSubdirectories)
                                        {
                                        // Search the subdirectories
                                                int iRC = SearchDirectory(refvecFiles, strFilePath, refcstrExtension, bSearchSubdirectories);
                                                if(iRC)
                                                {
                                                        return iRC;
                                                }
                                        }
                                        else
                                        {
                                        // Extension check
                                                strExtension = FileInformation.cFileName;// Use the file name
                                                strExtension = strExtension.substr(strExtension.rfind(".") + 1);

                                                cout << strExtension << endl;

                                                if(strExtension == refcstrExtension)
                                                {
                                                // Save the file name
                                                        refvecFiles.push_back(strFilePath);
                                                }

                                        }
                                }
                                else
                                {
                                        cout << "Error_Two" << endl;
                                }
                        }
                }while(::FindNextFile(hFile, &FileInformation) == TRUE);

                // Close the handle
                ::FindClose(hFile);

                DWORD dwError = ::GetLastError();
                if(dwError != ERROR_NO_MORE_FILES)
                {
                        return dwError;
                }
        }

        return 0;
}

---

In this code set the folder path and start work.

Code:

---

void CCountOne::GetStart(void)
{
        int iRC = 0;
        vector vecSrfFiles;// bin file name

// Search "C:\Bin Files\Bin" for "*.srf" files
// Subdirectories also included
        iRC = SearchDirectory(vecSrfFiles, "C:\\Bin Files\\Bin", "srf", true);
       
// Check the error
        if(iRC != 0)
        {
                cout << "Error_One " << iRC << endl;
        }

// Print the result
        for(vector::iterator iterSrf = vecSrfFiles.begin(); iterSrf != vecSrfFiles.end(); ++iterSrf)
        {
                cout << *iterSrf << endl;
        }
}

---

But it don't give any file path. Try to debug and check, seems

if(FileInformation.dwFileAttributes &FILE_ATTRIBUTE_DIRECTORY)

of code one stuck me with.

Can you guys just look at it.

Your logic is all screwed up.

In your above code, you say, "if this file is a directory.. then do this, if it isn't, its an error". You have your file handling code underneath the directory handling code. IE:

Code:

---

if (directory) {
    if (search_sub_directories) {
    else {
        // do stuff with files.. but it can't.. it already assumes this is a directory, not a file
}

---

etc.

Also, make sure theres a space between the ampersand and FILE_ATTRIBUTE_DIRECTORY.. just in case.

chem

Yep, I got it and corrected. One thing to know.

I want to get the file created time. Here what I have try.

Code:

---

                FILETIME fileName2 = FileInformation.ftCreationTime;
                cout << fileName2 << endl;

---

This give a compile error as follows.

Code:

---

binary '<<' : no operator found which takes a right-hand operand of type 'FILETIME' (or there is no acceptable conversion)

---

Here FileInformation is the instance of WIN32_FIND_DATA api. Why it is not work.

Do you understand what overloading is?

The cout class, doesn't support outputting types of FILETIME. cout supports all of your basic types, like, chars, char pointers, integers, floats, aswell as any type supported by the STL (like string for example).

To display the time properly, you need to convert the FILETIME variable to a normal time..

Code:

---

FILETIME fileName2 = FileInformation.ftCreationTime;
SYSTEMTIME stUTC, stLocal;

FileTimeToSystemTime(&fileName2, &stUTC);
SystemTimeToTzSpecificLocalTime(NULL, &stUTC, &stLocal);

std::ostringstream os;
os << "File Creation Time Is: " << stLocal.wMonth << "/" << stLocal.wDay << "/" << stLocal.wYear << " " << stLocal.wHour << ":" << stLocal.wMinute

cout << os;

---

That _should_ work. If it doesn't, wait until I get home to actually be on a computer with a compiler (typing it into notepad isn't the best way to test something).

chem

Should I include iosfwd to use ostringstream? Compiler says that class is undefined.

Code:

---

#include <sstream>

---

chem

How did you go?

chem

I follows what you say. But the ostringstream gives some characters as the date. I'm working out on it now.

This is what includes the date:

Code:

---

<< stLocal.wMonth << "/" << stLocal.wDay << "/" << stLocal.wYear

---

..remove that and it will be what you want.

chem

Actually this is wired me. As you said in your 2nd replay I test it, one thing is change. Define the variable 'os' very beginning of the of the application, but it don't work. There is no issue with the scope of the variable.

Then I define it just before use it. It works. I'm checking it why it is happened.

Strange.. post your code and I can have a look.

chem

Code:

---

        if(hFile != INVALID_HANDLE_VALUE)
        {
                do
                {
                        if(FileInformation.cFileName[0] != '.')
                        {
                                strFilePath.erase();// Clear the exsisting path
                                strFilePath = refcstrRootDirectory + "\\" + FileInformation.cFileName;// Set the new path
       
                                if(bSearchSubdirectories)// Specified directory
                                {
                                // Search the subdirectories
                                        int iRC = SearchDirectory(refvecFiles, strFilePath, refcstrExtension, bSearchSubdirectories);
                                        if(iRC)
                                        {
                                                return iRC;
                                        }
                                        else
                                        {
                                                cout << "Error_One" << endl;
                                        }
                                }
                                else
                                {
                                        strExtension = FileInformation.cFileName;// Use the file name
                                        strExtension = strExtension.substr(strExtension.rfind(".") + 1);
                                        if(strExtension == refcstrExtension)
                                        {
                                        // Save full file path for later use
                                                refvecFiles.push_back(strFilePath);

                                        // File name
                                                ftName = FileInformation.cFileName;
                                                cout << ftName << " ";

                                        // File time created
                                                ftCreate = FileInformation.ftCreationTime;
                                                FileTimeToSystemTime(&ftCreate, &stUTC);
                                                SystemTimeToTzSpecificLocalTime(NULL, &stUTC, &stLocal);

                                                ostringstream osCre;
                                                osCre << stLocal.wMonth << "/" << stLocal.wDay << "/" << stLocal.wYear
                                                        << " " << stLocal.wHour << ":" << stLocal.wMinute << "\t";
                                                cout << osCre.str();
                                        }
                                }
                        }
                }while(::FindNextFile(hFile, &FileInformation) == TRUE);

                ::FindClose(hFile);// Close the handle
        }

---

Here is a part of my code. Hope it is enough, because my code is too bulky, it will mess here in the forum.

Attach your project.

chem

Ok, here it is. I used binary files to check it on GetStart(). You can easily see it.

And also I attached .cpp files only, because of the attach file size limitation.