Enum clio::Input

pub enum Input {
    Pipe,
    File(File),
}

Variants

Pipe

File(File)

Implementations

impl Input

pub fn new(path: &OsStr) -> Result<Self>

Contructs a new input either by opening the file or for '-' returning stdin

pub fn len(&self) -> Option<u64>

If input is a file, returns the size of the file, in bytes otherwise if input is stdin returns none.

Examples

let file = clio::Input::new("foo.txt")?;

assert_eq(Some(0), file.len());

pub fn is_empty(&self) -> Option<bool>

Returns a boolean saying if the file is empty, if using stdin returns None

Examples

let file = clio::Input::new("foo.txt")?;

assert_eq(Some(true), file.is_empty());

Trait Implementations

impl Read for Input

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

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.

fn is_read_vectored(&self) -> bool

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

Determines if this Reader has an efficient read_vectored implementation.

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.