Struct sdl2::rwops::RWops

pub struct RWops<'a> { /* fields omitted */ }

A structure that provides an abstract interface to stream I/O.

Methods

impl<'a> RWops<'a>

unsafe fn raw(&self) -> *mut SDL_RWops

unsafe fn from_ll<'b>(raw: *mut SDL_RWops) -> RWops<'b>

fn from_file<P: AsRef<Path>>(
    path: P,
    mode: &str
) -> Result<RWops<'static>, String>

Creates an SDL file stream.

fn from_bytes(buf: &'a [u8]) -> Result<RWops<'a>, String>

Prepares a read-only memory buffer for use with RWops.

This method can only fail if the buffer size is zero.

fn from_read<T>(r: &mut T, buffer: &'a mut Vec<u8>) -> Result<RWops<'a>, String> where
    T: Read + Sized, 

Reads a Read object into a buffer and then passes it to RWops.from_bytes.

The buffer must be provided to this function and must live as long as the RWops, but the RWops does not take ownership of it.

fn from_bytes_mut(buf: &'a mut [u8]) -> Result<RWops<'a>, String>

Prepares a read-write memory buffer for use with RWops.

This method can only fail if the buffer size is zero.

fn len(&self) -> Option<usize>

Gets the stream's total size in bytes.

Returns None if the stream size can't be determined (either because it doesn't make sense for the stream type, or there was an error).

fn is_empty(&self) -> bool

Trait Implementations

impl<'a> Drop for RWops<'a>

fn drop(&mut self)

Executes the destructor for this type.

impl<'a> Read for RWops<'a>

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

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

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, placing them into 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 chars(self) -> Chars<Self>

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

the semantics of a partial read/write of where errors happen is currently unclear and may change

Transforms this Read instance to an [Iterator] over [char]s.

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.

impl<'a> Write for RWops<'a>

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

Write a buffer into this object, 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_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this write.

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

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

impl<'a> Seek for RWops<'a>

fn seek(&mut self, pos: SeekFrom) -> Result<u64>

Seek to an offset, in bytes, in a stream.