Struct escposify::device::File

pub struct File<W> { /* private fields */ }

File device that can be written to.

Implementations

impl<W: Write> File<W>

pub fn from_path<P: AsRef<Path> + ToString>(path: P) -> Result<File<File>>

pub fn from(fobj: W) -> File<W>

Create a device::File from a std::io::Write.

Example

use std::fs::File;
use tempfile::NamedTempFileOptions;

let tempf = NamedTempFileOptions::new().create().unwrap();
let fobj = File::options().append(true).open(tempf.path()).unwrap();
let file = escposify::device::File::from(fobj);

Trait Implementations

impl<W: Debug> Debug for File<W>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<W: Write> Write for File<W>

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

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

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

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

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

Attempts to write an entire buffer into this writer.

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, fmt: 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.