Struct ChecksumWriter 

pub struct ChecksumWriter<T: Write> {
    writer: T,
    path: PathBuf,
    adler: Adler32,
}

In addition to checking the checksum, we also keep track of which files are open, and we delete the open files if the program is terminated halfway.

Fields

writer: T

path: PathBuf

adler: Adler32

Implementations

impl<T: Write> ChecksumWriter<T>

pub fn new(path: PathBuf, writer: T) -> Self

Trait Implementations

impl<T: Write> Drop for ChecksumWriter<T>

fn drop(&mut self)

Executes the destructor for this type.

impl<T: Write> Write for ChecksumWriter<T>

We only implement the functions required and the ones we actually use.

fn write(&mut self, buf: &[u8]) -> Result<usize>

Writes a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_all(&mut self, buf: &[u8]) -> Result<()>

Attempts to write an entire buffer into this writer.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

🔬This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Write.