public unsafe void EnumStorage()
{
using (var cleaner = new TestFileCleaner())
{
string path = cleaner.GetTestPath();
IStorage storage = (IStorage)ComMethods.CreateStorage(path, InterfaceIds.IID_IStorage);
IStream stream = storage.CreateStream("mystream", StorageMode.Create | StorageMode.ReadWrite | StorageMode.ShareExclusive);
IStorage subStorage = storage.CreateStorage("substorage", StorageMode.Create | StorageMode.ReadWrite | StorageMode.ShareExclusive);
storage.Commit();
IEnumSTATSTG e = storage.EnumElements();
WInterop.Com.STATSTG stat = default;
int count = 0;
while (e.Next(1, ref stat) > 0)
{
count++;
switch (stat.type)
{
case StorageType.Storage:
stat.GetAndFreeString().Should().Be("substorage");
break;
case StorageType.Stream:
stat.GetAndFreeString().Should().Be("mystream");
break;
default:
false.Should().BeTrue($"unexpected type {stat.type}");
break;
}
}
count.Should().Be(2);
}
}
public unsafe void RenameStream()
{
using (var cleaner = new TestFileCleaner())
{
string path = cleaner.GetTestPath();
IStorage storage = (IStorage)ComMethods.CreateStorage(path, InterfaceIds.IID_IStorage);
IStream stream = storage.CreateStream("name", StorageMode.Create | StorageMode.ReadWrite | StorageMode.ShareExclusive);
stream.Should().NotBeNull();
stream.Stat(out var stats, StatFlag.Default);
stats.GetAndFreeString().Should().Be("name");
stats.type.Should().Be(StorageType.Stream);
Action action = () => storage.RenameElement("name", "newname");
// Can't rename until after we close the stream
action.Should().Throw <COMException>().And.HResult.Should().Be((int)HResult.STG_E_ACCESSDENIED);
Marshal.ReleaseComObject(stream);
action();
action = () => stream = storage.OpenStream("name", IntPtr.Zero, StorageMode.ShareExclusive);
action.Should().Throw <COMException>().And.HResult.Should().Be((int)HResult.STG_E_FILENOTFOUND);
stream = storage.OpenStream("newname", IntPtr.Zero, StorageMode.ShareExclusive);
stream.Should().NotBeNull();
}
}
public unsafe void IsIStorage()
{
using (var cleaner = new TestFileCleaner())
{
string path = cleaner.GetTestPath();
object created = ComMethods.CreateStorage(path, InterfaceIds.IID_IStorage);
ComMethods.IsStorageFile(path).Should().BeTrue();
}
}
public unsafe void CreateStream()
{
using (var cleaner = new TestFileCleaner())
{
string path = cleaner.GetTestPath();
IStorage storage = (IStorage)ComMethods.CreateStorage(path, InterfaceIds.IID_IStorage);
IStream stream = storage.CreateStream("mystream", StorageMode.Create | StorageMode.ReadWrite | StorageMode.ShareExclusive);
stream.Should().NotBeNull();
stream.Stat(out var stats, StatFlag.Default);
stats.GetAndFreeString().Should().Be("mystream");
stats.type.Should().Be(StorageType.Stream);
}
}
public unsafe void CreateIStorage()
{
using (var cleaner = new TestFileCleaner())
{
string path = cleaner.GetTestPath();
object created = ComMethods.CreateStorage(path, InterfaceIds.IID_IStorage);
created.Should().NotBeNull();
IStorage storage = created as IStorage;
storage.Should().NotBeNull();
Storage.FileExists(path).Should().BeTrue();
storage.Stat(out var stats, StatFlag.Default);
stats.GetAndFreeString().Should().Be(path);
stats.type.Should().Be(StorageType.Storage);
stats.clsid.Should().Be(Guid.Empty, "should be null for newly created objects");
}
}
public unsafe void OpenIStorage()
{
using (var cleaner = new TestFileCleaner())
{
string path = cleaner.GetTestPath();
IStorage storage = (IStorage)ComMethods.CreateStorage(path, InterfaceIds.IID_IStorage);
Guid guid = new Guid();
storage.SetClass(ref guid);
storage.Commit(StorageCommit.Default);
Marshal.ReleaseComObject(storage);
storage = (IStorage)ComMethods.OpenStorage(path, InterfaceIds.IID_IStorage);
storage.Should().NotBeNull();
storage.Stat(out var stats, StatFlag.Default);
stats.GetAndFreeString().Should().Be(path);
stats.type.Should().Be(StorageType.Storage);
stats.clsid.Should().Be(guid);
}
}
public unsafe void ComStreamTextReadWrite()
{
using (var cleaner = new TestFileCleaner())
{
string path = cleaner.GetTestPath();
IStorage storage = (IStorage)ComMethods.CreateStorage(path, InterfaceIds.IID_IStorage);
ComStream stream;
using (stream = new ComStream(storage.CreateStream("mystream", StorageMode.Create | StorageMode.ReadWrite | StorageMode.ShareExclusive)))
{
using (StreamWriter writer = new StreamWriter(stream, Encoding.Unicode, 1024, leaveOpen: true))
{
writer.WriteLine("This is line one.");
stream.Length.Should().Be(0);
stream.Position.Should().Be(0);
writer.Flush();
stream.Length.Should().Be(40);
stream.Position.Should().Be(40);
writer.WriteLine("This is line two.");
stream.Length.Should().Be(40);
stream.Position.Should().Be(40);
writer.Flush();
stream.Length.Should().Be(78);
stream.Position.Should().Be(78);
}
stream.Stream.Should().NotBeNull();
using (StreamReader reader = new StreamReader(stream, Encoding.Unicode, detectEncodingFromByteOrderMarks: false, 1024, leaveOpen: true))
{
stream.Position = 0;
stream.Position.Should().Be(0);
reader.ReadLine().Should().Be("This is line one.");
reader.ReadLine().Should().Be("This is line two.");
}
stream.Stream.Should().NotBeNull();
}
stream.Stream.Should().BeNull();
}
}
public unsafe void ComStreamConstruction()
{
using var cleaner = new TestFileCleaner();
string path = cleaner.GetTestPath();
IStorage storage = (IStorage)ComMethods.CreateStorage(path, InterfaceIds.IID_IStorage);
ComStream stream;
using (stream = new ComStream(storage.CreateStream("mystream", StorageMode.Create | StorageMode.ReadWrite | StorageMode.ShareExclusive)))
{
stream.ToString().Should().Be("mystream");
stream.StorageMode.Should().Be(StorageMode.ReadWrite | StorageMode.ShareExclusive);
stream.StorageType.Should().Be(StorageType.Stream);
stream.CanRead.Should().BeTrue();
stream.CanSeek.Should().BeTrue();
stream.CanWrite.Should().BeTrue();
stream.Length.Should().Be(0);
stream.Position.Should().Be(0);
}
}