Struct MemWriter

pub struct MemWriter {
    pub data: Vec<u8>,
    pub pos: usize,
}

A memory writer that can write data to a vector of bytes.

Fields

data: Vec<u8>

The data to write to.

pos: usize

The current position in the data.

Implementations

impl MemWriter

pub fn new() -> Self

Creates a new MemWriter with an empty data vector.

pub fn from_vec(data: Vec<u8>) -> Self

Creates a new MemWriter with the given data.

pub fn into_inner(self) -> Vec<u8>

Returns the inner data of the writer.

pub fn as_slice(&self) -> &[u8]

Returns a reference to the inner data of the writer.

pub fn to_ref<'a>(&'a self) -> MemReaderRef<'a>

Returns a new MemReaderRef that references the current data and position.

Trait Implementations

impl CPeek for MemWriter

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

Peeks data from the reader into the provided buffer. Returns the number of bytes read.

fn cpeek_at(&self, offset: u64, buf: &mut [u8]) -> Result<usize>

Peeks data from the reader at a specific offset into the provided buffer. Returns the number of bytes read.

fn cpeek_cstring(&self) -> Result<CString>

Peeks a C-style string (null-terminated) from the reader.

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

Peeks data from the reader into the provided buffer. Returns an error if the buffer is not filled completely.

fn cpeek_exact_at(&self, offset: u64, buf: &mut [u8]) -> Result<()>

Peeks data from the reader at a specific offset into the provided buffer. Returns an error if the buffer is not filled completely.

fn cpeek_at_vec(&self, offset: u64, len: usize) -> Result<Vec<u8>>

Peeks data from the reader at a specific offset into a vector. Returns the vector containing the data read.

fn cpeek_exact_at_vec(&self, offset: u64, len: usize) -> Result<Vec<u8>>

Peeks data from the reader at a specific offset into a vector. Returns an error if the buffer is not filled completely.

fn cpeek_u8(&self) -> Result<u8>

Peeks a u8 from the reader.

fn cpeek_u16(&self) -> Result<u16>

Peeks a u16 from the reader in little-endian order.

fn cpeek_u16_be(&self) -> Result<u16>

Peeks a u16 from the reader in big-endian order.

fn cpeek_u32(&self) -> Result<u32>

Peeks a u32 from the reader in little-endian order.

fn cpeek_u32_be(&self) -> Result<u32>

Peeks a u32 from the reader in big-endian order.

fn cpeek_u64(&self) -> Result<u64>

Peeks a u64 from the reader in little-endian order.

fn cpeek_u64_be(&self) -> Result<u64>

Peeks a u64 from the reader in big-endian order.

fn cpeek_u128(&self) -> Result<u128>

Peeks a u128 from the reader in little-endian order.

fn cpeek_u128_be(&self) -> Result<u128>

Peeks a u128 from the reader in big-endian order.

fn cpeek_i8(&self) -> Result<i8>

Peeks an i8 from the reader.

fn cpeek_i16(&self) -> Result<i16>

Peeks an i16 from the reader in little-endian order.

fn cpeek_i16_be(&self) -> Result<i16>

Peeks an i16 from the reader in big-endian order.

fn cpeek_i32(&self) -> Result<i32>

Peeks an i32 from the reader in little-endian order.

fn cpeek_i32_be(&self) -> Result<i32>

Peeks an i32 from the reader in big-endian order.

fn cpeek_i64(&self) -> Result<i64>

Peeks an i64 from the reader in little-endian order.

fn cpeek_i64_be(&self) -> Result<i64>

Peeks an i64 from the reader in big-endian order.

fn cpeek_i128(&self) -> Result<i128>

Peeks an i128 from the reader in little-endian order.

fn cpeek_i128_be(&self) -> Result<i128>

Peeks an i128 from the reader in big-endian order.

fn cpeek_u8_at(&self, offset: u64) -> Result<u8>

Peeks a u8 at a specific offset from the reader.

fn cpeek_u16_at(&self, offset: u64) -> Result<u16>

Peeks a u16 at a specific offset from the reader in little-endian order.

fn cpeek_u16_be_at(&self, offset: u64) -> Result<u16>

Peeks a u16 at a specific offset from the reader in big-endian order.

fn cpeek_u32_at(&self, offset: u64) -> Result<u32>

Peeks a u32 at a specific offset from the reader in little-endian order.

fn cpeek_u32_be_at(&self, offset: u64) -> Result<u32>

Peeks a u32 at a specific offset from the reader in big-endian order.

fn cpeek_u64_at(&self, offset: u64) -> Result<u64>

Peeks a u64 at a specific offset from the reader in little-endian order.

fn cpeek_u64_be_at(&self, offset: u64) -> Result<u64>

Peeks a u64 at a specific offset from the reader in big-endian order.

fn cpeek_u128_at(&self, offset: u64) -> Result<u128>

Peeks a u128 at a specific offset from the reader in little-endian order.

fn cpeek_u128_be_at(&self, offset: u64) -> Result<u128>

Peeks a u128 at a specific offset from the reader in big-endian order.

fn cpeek_i8_at(&self, offset: u64) -> Result<i8>

Peeks an i8 at a specific offset from the reader.

fn cpeek_i16_at(&self, offset: u64) -> Result<i16>

Peeks an i16 at a specific offset from the reader in little-endian order.

fn cpeek_i16_be_at(&self, offset: u64) -> Result<i16>

Peeks an i16 at a specific offset from the reader in big-endian order.

fn cpeek_i32_at(&self, offset: u64) -> Result<i32>

Peeks an i32 at a specific offset from the reader in little-endian order.

fn cpeek_i32_be_at(&self, offset: u64) -> Result<i32>

Peeks an i32 at a specific offset from the reader in big-endian order.

fn cpeek_i64_at(&self, offset: u64) -> Result<i64>

Peeks an i64 at a specific offset from the reader in little-endian order.

fn cpeek_i64_be_at(&self, offset: u64) -> Result<i64>

Peeks an i64 at a specific offset from the reader in big-endian order.

fn cpeek_i128_at(&self, offset: u64) -> Result<i128>

Peeks an i128 at a specific offset from the reader in little-endian order.

fn cpeek_i128_be_at(&self, offset: u64) -> Result<i128>

Peeks an i128 at a specific offset from the reader in big-endian order.

fn cpeek_cstring_at(&self, offset: u64) -> Result<CString>

Peeks a C-style string (null-terminated) from the reader at a specific offset.

fn cpeek_and_equal(&self, data: &[u8]) -> Result<()>

Peeks data and checks if it matches the provided data.

fn cpeek_and_equal_at(&self, offset: u64, data: &[u8]) -> Result<()>

Peeks data at a specific offset and checks if it matches the provided data.

impl CustomFn for MemWriter

Available on crate feature cat-system only.

fn write_patched_string(&mut self, s: &CstString, data: &[u8]) -> Result<usize>

impl Debug for MemWriter

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

Formats the value using the given formatter.

impl Seek for MemWriter

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

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

fn stream_position(&mut self) -> Result<u64>

Returns the current seek position from the start of the stream.

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

Rewind to the beginning of a stream.

fn stream_len(&mut self) -> Result<u64, Error>

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

Returns the length of this stream (in bytes).

fn seek_relative(&mut self, offset: i64) -> Result<(), Error>

Seeks relative to the current position.

impl Write for MemWriter

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

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

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

Flushes 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, args: 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.