[−][src]Struct path_abs::FileRead
A read-only file handle with path()
attached and improved error messages. Contains only the
methods and trait implementations which are allowed by a read-only file.
Examples
use std::io::Read; use path_abs::{PathFile, FileRead}; let example = "example.txt"; let file = PathFile::create(example)?; let expected = "foo\nbar"; file.write_str(expected)?; let mut read = FileRead::open(example)?; let mut s = String::new(); read.read_to_string(&mut s)?; assert_eq!(expected, s);
Methods
impl FileRead
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pub fn open<P: AsRef<Path>>(path: P) -> Result<FileRead>
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Open the file as read-only.
pub fn path(&self) -> &PathFile
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pub fn read_string(&mut self) -> Result<String>
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Read what remains of the file to a String
.
Trait Implementations
impl From<FileRead> for FileOpen
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impl From<FileRead> for File
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impl AsRef<FileOpen> for FileRead
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impl AsRef<File> for FileRead
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impl Debug for FileRead
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impl Borrow<FileOpen> for FileRead
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impl Borrow<File> for FileRead
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impl<'a> Borrow<FileOpen> for &'a FileRead
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impl<'a> Borrow<File> for &'a FileRead
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impl Read for FileRead
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fn read(&mut self, buf: &mut [u8]) -> Result<usize>
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fn read_vectored(&mut self, bufs: &mut [IoSliceMut]) -> Result<usize, Error>
1.36.0[src]
Like read
, except that it reads into a slice of buffers. Read more
unsafe fn initializer(&self) -> Initializer
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read_initializer
)Determines if this Read
er can work with buffers of uninitialized memory. Read more
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>
1.0.0[src]
Read all bytes until EOF in this source, placing them into buf
. Read more
fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>
1.0.0[src]
Read all bytes until EOF in this source, appending them to buf
. Read more
fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>
1.6.0[src]
Read the exact number of bytes required to fill buf
. Read more
fn by_ref(&mut self) -> &mut Self
1.0.0[src]
Creates a "by reference" adaptor for this instance of Read
. Read more
fn bytes(self) -> Bytes<Self>
1.0.0[src]
Transforms this Read
instance to an [Iterator
] over its bytes. Read more
fn chain<R>(self, next: R) -> Chain<Self, R> where
R: Read,
1.0.0[src]
R: Read,
Creates an adaptor which will chain this stream with another. Read more
fn take(self, limit: u64) -> Take<Self>
1.0.0[src]
Creates an adaptor which will read at most limit
bytes from it. Read more
impl Seek for FileRead
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fn seek(&mut self, pos: SeekFrom) -> Result<u64>
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fn stream_len(&mut self) -> Result<u64, Error>
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seek_convenience
)Returns the length of this stream (in bytes). Read more
fn stream_position(&mut self) -> Result<u64, Error>
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seek_convenience
)Returns the current seek position from the start of the stream. Read more
Auto Trait Implementations
impl Unpin for FileRead
impl Sync for FileRead
impl Send for FileRead
impl RefUnwindSafe for FileRead
impl UnwindSafe for FileRead
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,