librqbit 9.0.0-rc.0

The main library used by rqbit torrent client. The binary is just a small wrapper on top of it.
Documentation 
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#[cfg(windows)]
pub fn mark_file_sparse(f: &std::fs::File) -> bool {
    use std::os::windows::io::AsRawHandle;
    use windows::{
        Win32::Foundation::HANDLE, Win32::System::IO::DeviceIoControl,
        Win32::System::Ioctl::FSCTL_SET_SPARSE,
    };

    let handle = HANDLE(f.as_raw_handle());

    unsafe { DeviceIoControl(handle, FSCTL_SET_SPARSE, None, 0, None, 0, None, None).is_ok() }
}