Struct async_resol_vbus::FileListReader

pub struct FileListReader<T> where
    T: AsRef<Path>,  { /* fields omitted */ }

Chains multiple files together in a single Read object.

The main advantage of this type compared to multiple chained Read values is, that only one file is open at any given time.

Examples

use std::io::Read;

use resol_vbus::FileListReader;

let files: Vec<_> = std::env::args().skip(1).collect();

let mut flr = FileListReader::new(files);

let mut buf = [0u8; 4096];

loop {
    let size = flr.read(&mut buf).unwrap();
    if size == 0 {
        break;
    }

    // process the data
}

Methods

impl<T> FileListReader<T> where
    T: AsRef<Path>, 

pub fn new(file_list: Vec<T>) -> FileListReader<T>

Construct a new FileListReader from a list of paths.

Trait Implementations

impl<T> Debug for FileListReader<T> where
    T: AsRef<Path> + Debug, 

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

Formats the value using the given formatter.

impl<T> Read for FileListReader<T> where
    T: AsRef<Path>, 

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

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

fn read_vectored(&mut self, bufs: &mut [IoSliceMut]) -> Result<usize, Error>

Like read, except that it reads into a slice of buffers.

unsafe fn initializer(&self) -> Initializer

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

Determines if this Reader can work with buffers of uninitialized memory.

fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>

Read all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>

Read all bytes until EOF in this source, appending them to buf.

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

Read the exact number of bytes required to fill buf.

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

Creates a "by reference" adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>

Transforms this Read instance to an [Iterator] over its bytes.

fn chain<R>(self, next: R) -> Chain<Self, R> where
    R: Read, 

Creates an adaptor which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>

Creates an adaptor which will read at most limit bytes from it.