Add no-std version of byteorder library.

This is needed for pVM firmware, via virtio-drivers and zerocopy.

Bug: 237249743
Test: m vmbase_example_bin pvmfw_bin
Change-Id: I1a7bf375a3b75913b8b75ca4ac2cd69c3cb13bc5
3 files changed
tree: edde13a0369c03135b816b6f9244127eae07da0e
  1. .github/
  2. benches/
  3. src/
  4. .cargo_vcs_info.json
  5. .gitignore
  6. Android.bp
  7. Cargo.toml
  8. Cargo.toml.orig
  9. cargo2android.json
  10. cargo2android_nostd.bp
  11. CHANGELOG.md
  12. COPYING
  13. LICENSE-MIT
  14. METADATA
  15. MODULE_LICENSE_MIT
  16. OWNERS
  17. README.md
  18. rustfmt.toml
  19. TEST_MAPPING
  20. UNLICENSE
README.md

byteorder

This crate provides convenience methods for encoding and decoding numbers in either big-endian or little-endian order.

Build status

Dual-licensed under MIT or the UNLICENSE.

Documentation

https://docs.rs/byteorder

Installation

This crate works with Cargo and is on crates.io. Add it to your Cargo.toml like so:

[dependencies]
byteorder = "1"

If you want to augment existing Read and Write traits, then import the extension methods like so:

use byteorder::{ReadBytesExt, WriteBytesExt, BigEndian, LittleEndian};

For example:

use std::io::Cursor;
use byteorder::{BigEndian, ReadBytesExt};

let mut rdr = Cursor::new(vec![2, 5, 3, 0]);
// Note that we use type parameters to indicate which kind of byte order
// we want!
assert_eq!(517, rdr.read_u16::<BigEndian>().unwrap());
assert_eq!(768, rdr.read_u16::<BigEndian>().unwrap());

no_std crates

This crate has a feature, std, that is enabled by default. To use this crate in a no_std context, add the following to your Cargo.toml:

[dependencies]
byteorder = { version = "1", default-features = false }

Alternatives

Note that as of Rust 1.32, the standard numeric types provide built-in methods like to_le_bytes and from_le_bytes, which support some of the same use cases.