CODEWITHSUNDEEP
cwindowslinuxioreaddir
Boardy
Boardy

Reputation: 36237

Get each file within a directory in c on Windows

I am currently working on a C project where I need to scan a directory and get the file name for each file within that directory. The code needs to run on both Windows and Linux. I have the linux version using the following code. 

DIR *dp;
int i = 0;
struct dirent *ep;
char logPath[FILE_PATH_BUF_LEN];
sprintf(logPath, "%s/logs/", logRotateConfiguration->logFileDir);
printf("Checking pre existing log count in: %s\n", logPath);
dp = opendir(logPath);

if (dp != NULL)
{
    while ((ep = readdir(dp)) != NULL)
    {
        if (strcmp(ep->d_name, ".") != 0 && strcmp(ep->d_name, "..") != 0)
        {
            i = i + 1;
        }
    }
    closedir(dp);
}
else
{
    perror("Couldn't open directory");
}
logRotateConfiguration->logCount = i;

For this code to work I am using the #include <dirent.h> but have found this to not be compatible for Windows. Therefore in my header file I have used an ifdef to include dirent.h if on Linux but not sure what I can use for it being on Windows.

Thanks for any help you can provide.

Upvotes: 2

Views: 172

Answers (3)

Bernd Elkemann
Bernd Elkemann

Reputation: 23560

MinGW (link) has dirent.h. I have found no documentation about its specific implementation of dirent on the net, but i assume it is similar enough to unix-derivatives version. You can look at the header-file and then decide whether to use it.

Notes about the other answers: I dont know about the version from softagalleria.net, so i cannot talk about it, but about the FindFirstFile/FindNextFile-API: If you decide to use it make sure to use the "Unicode"-Versions (actually UCS-2) because the Ascii-Versions only allow very limited path-lengths. To use the Unicode-Version define the macro and make sure you prepend all paths with \\?\.

Upvotes: 0

tozka
tozka

Reputation: 3451

There is a free windows implementation of dirent.h (clicky)

Upvotes: 1

hmjd
hmjd

Reputation: 122001

To list files on Windows you can use FindFirstFile() and FindNextFile(). For an example see Listing the Files in a Directory.

Upvotes: 1

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