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author | Valentin Popov <valentin@popov.link> | 2024-01-08 00:21:28 +0300 |
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committer | Valentin Popov <valentin@popov.link> | 2024-01-08 00:21:28 +0300 |
commit | 1b6a04ca5504955c571d1c97504fb45ea0befee4 (patch) | |
tree | 7579f518b23313e8a9748a88ab6173d5e030b227 /vendor/lebe/README.md | |
parent | 5ecd8cf2cba827454317368b68571df0d13d7842 (diff) | |
download | fparkan-1b6a04ca5504955c571d1c97504fb45ea0befee4.tar.xz fparkan-1b6a04ca5504955c571d1c97504fb45ea0befee4.zip |
Initial vendor packages
Signed-off-by: Valentin Popov <valentin@popov.link>
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-rw-r--r-- | vendor/lebe/README.md | 90 |
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diff --git a/vendor/lebe/README.md b/vendor/lebe/README.md new file mode 100644 index 0000000..d32a28a --- /dev/null +++ b/vendor/lebe/README.md @@ -0,0 +1,90 @@ +[![Rust Docs](https://docs.rs/lebe/badge.svg)](https://docs.rs/lebe) +[![Crate Crate](https://img.shields.io/crates/v/lebe.svg)](https://crates.io/crates/lebe) +![Lines of Code](https://tokei.rs/b1/github/johannesvollmer/lebe?category=code) + + +# LEBE +Tiny, dead simple, high performance endianness conversions with a generic API. +This crate purposefully does not have a different method, like `write_u16(my_value)`, for each primitive type. Instead, this uses generic type inference: `write(my_u16)`. + +# Purpose +This crate has exactly two purposes: + 1. Simple conversion between slices of primitives and byte arrays without unsafe code + 2. Simple and fast conversion from one endianness to the other one + +The [byteorder crate](https://github.com/BurntSushi/byteorder) uses ![Lines of Code](https://tokei.rs/b1/github/BurntSushi/byteorder?category=code) for this. + +This simplifies reading and writing binary data to files or network streams. + + +# Usage + +Write values. +```rust + use lebe::io::WriteEndian; + use std::io::Write; + + fn main(){ + let mut output_bytes: Vec<u8> = Vec::new(); + + let numbers: &[i32] = &[ 32, 102, 420, 594 ]; + output_bytes.write_as_little_endian(numbers.len()).unwrap(); + output_bytes.write_as_little_endian(numbers).unwrap(); + } +``` + +Read numbers. +```rust + use lebe::io::ReadEndian; + use std::io::Read; + + fn main(){ + let mut input_bytes: &[u8] = &[ 3, 244 ]; + let number: u16 = input_bytes.read_from_little_endian().unwrap(); + } +``` + +Read slices. +```rust + use lebe::io::ReadEndian; + use std::io::Read; + + fn main(){ + let mut input_bytes: &[u8] = &[ 0, 2, 0, 3, 244, 1, 0, 3, 244, 1 ]; + + let len: u16 = input_bytes.read_from_little_endian().unwrap(); + let mut numbers = vec![ 0.0; len as usize ]; + + input_bytes.read_from_little_endian_into(numbers.as_mut_slice()).unwrap(); + } +``` + +Convert slices in-place. +```rust + use lebe::Endian; + + fn main(){ + let mut numbers: &[i32] = &[ 32, 102, 420, 594 ]; + numbers.convert_current_to_little_endian(); + } +``` + + +# Why not use [byteorder](https://crates.io/crates/byteorder)? +This crate supports batch-writing slices with native speed +where the os has the matching endianness. Writing slices in `byteorder` +must be done manually, and may be slower than expected. +This crate does provide u8 and i8 slice operations for completeness. +Also, the API of this crate looks simpler. + +# Why not use [endianness](https://crates.io/crates/endianness)? +This crate has no runtime costs, just as `byteorder`. + +# Why not use this crate? +The other crates probably have better documentation. + + +# Fun Facts +LEBE is made up from 'le' for little endian and 'be' for big endian. +If you say that word using english pronounciation, +a german might think you said the german word for 'love'. |