Is there a std.zip.ZipArchive isDir or isFile method?

[cc]

It looks like 0040000 (octal) is the flag for directories on 
linux, but it does seem that std.zip is explicitly returning 0 if 
the file was created on the opposite platform re: Posix vs 
Windows, which is... odd.

@property @nogc nothrow uint fileAttributes() const
{
     version (Posix)
     {
         if ((_madeVersion & 0xFF00) == 0x0300)
             return _externalAttributes >> 16;
         return 0;
     }
     else version (Windows)
     {
         if ((_madeVersion & 0xFF00) == 0x0000)
             return _externalAttributes;
         return 0;
     }
     else
     {
         static assert(0, "Unimplemented platform");
     }
}

Looks like the only way around it is modifying std.zip?  Adding 
something like:

@property bool isDir() const {
	enum uint FILE_ATTRIBUTE_DIRECTORY = 0x10; // WINNT.h
	enum uint S_IFDIR = 0x4000; // sys/stat.h
	version(Windows) {
		if ((_madeVersion & 0xFF00) == 0x0300) // Archive made on Posix
			return cast(bool) (_externalAttributes & (S_IFDIR << 16));
		return cast(bool) (_externalAttributes & 
FILE_ATTRIBUTE_DIRECTORY);
	} else version(Posix) {
		if ((_madeVersion & 0xFF00) == 0x0300) // Archive made on Posix
			return cast(bool) (_externalAttributes & (S_IFDIR << 16));
		return cast(bool) ((_externalAttributes) & 
FILE_ATTRIBUTE_DIRECTORY);
	} else {
		static assert(0, "Unimplemented platform");
	}
}

will let me do this:

void main() {
	foreach (zipfile; ["windowstest.zip", "linuxtest.zip"]) {
		writeln(zipfile);
		auto zip = new ZipArchive(std.file.read(zipfile));
		foreach (fn, am; zip.directory) {
			writefln("%24s  %5s  %s", fn, am.isDir, am.fileAttributes);
		}
	}
}

Results on Windows:
windowstest.zip
                    a.txt  false  32
                 testdir/   true  16
            testdir/b.txt  false  32
linuxtest.zip
                    a.txt  false  0
                 testdir/   true  0
            testdir/b.txt  false  0

Results on Linux:
windowstest.zip
                 testdir/   true  0
            testdir/b.txt  false  0
                    a.txt  false  0
linuxtest.zip
                 testdir/   true  16893
            testdir/b.txt  false  33204
                    a.txt  false  33204