public static bool HasFileSystem(IFileSystemStore store)
{
if (store == null || store.StreamLength == 0)
{
return(false);
}
switch (store.StorageType)
{
case StorageType.PhysicalDiskPartition: {
PhysicalDiskPartitionAttributes attributes = (PhysicalDiskPartitionAttributes)store.Attributes;
if (attributes.PartitionType == PartitionType.NTFS)
{
return(true);
}
else if (attributes.PartitionType == PartitionType.FAT16 ||
attributes.PartitionType == PartitionType.FAT32)
{
return(true);
}
else if (attributes.PartitionType == PartitionType.FAT32WithInt13Support)
{
return(true);
}
else
{
return(false);
}
}
case StorageType.LogicalVolume: {
LogicalDiskAttributes attributes = (LogicalDiskAttributes)store.Attributes;
if (attributes.FileSystem == "NTFS")
{
return(true);
}
else if (attributes.FileSystem == "FAT16")
{
return(true);
}
else if (attributes.FileSystem == "FAT32")
{
return(true);
}
else
{
return(false);
}
}
default:
return(false);
}
}
public static IFileSystem TryLoad(IFileSystemStore store, string FSType = null)
{
if (store == null || store.StreamLength == 0)
{
return(null);
}
if (FSType == "NTFS")
{
return(new FileSystemNTFS(store));
}
else if (FSType == "FAT16")
{
return(new FileSystemFAT(store, PartitionType.FAT16));
}
else if (FSType == "FAT32")
{
return(new FileSystemFAT(store, PartitionType.FAT32));
}
// TODO: Autodetect based on FS signatures if possible?
switch (store.StorageType)
{
case StorageType.PhysicalDiskPartition: {
PhysicalDiskPartitionAttributes attributes = (PhysicalDiskPartitionAttributes)store.Attributes;
if (attributes.PartitionType == PartitionType.NTFS)
{
return(new FileSystemNTFS(store));
}
else if (attributes.PartitionType == PartitionType.FAT16 ||
attributes.PartitionType == PartitionType.FAT32)
{
return(new FileSystemFAT(store, attributes.PartitionType));
}
else if (attributes.PartitionType == PartitionType.FAT32WithInt13Support)
{
return(new FileSystemFAT(store, PartitionType.FAT32));
}
else
{
return(null);
}
}
case StorageType.LogicalVolume: {
LogicalDiskAttributes attributes = (LogicalDiskAttributes)store.Attributes;
if (attributes.FileSystem == "NTFS")
{
return(new FileSystemNTFS(store));
}
else if (attributes.FileSystem == "FAT16")
{
return(new FileSystemFAT(store, PartitionType.FAT16));
}
else if (attributes.FileSystem == "FAT32")
{
return(new FileSystemFAT(store, PartitionType.FAT32));
}
else
{
return(null);
}
}
default:
return(null);
}
}
