commit | 366bd896ddb43076ebc6bfb27094425b36eb0fd7 | [log] [tgz] |
---|---|---|
author | James Farrell <jamesfarrell@google.com> | Wed Aug 14 18:59:47 2024 +0000 |
committer | James Farrell <jamesfarrell@google.com> | Wed Aug 14 19:31:21 2024 +0000 |
tree | 8c6e533f408142fb3936be3e46992b8265386496 | |
parent | 7ebe55f85dc6a221c658da0f45b764c367b81015 [diff] |
Migrate 25 crates to monorepo async-stream async-stream-impl async-task async-trait atomic atty axum bencher bincode bitreader bstr buddy_system_allocator byteorder bytes camino cast cesu8 cexpr cfg-if ciborium ciborium-io ciborium-ll clap_complete clap_derive clap_lex Bug: 339424309 Test: treehugger Change-Id: I26d240825b4d71cffa560fa260f9cc51afc24a54
Convert between ordinary UTF-8 and CESU-8 encodings.
CESU-8 encodes characters outside the Basic Multilingual Plane as two UTF-16 surrogate chacaters, which are then further re-encoded as invalid, 3-byte UTF-8 characters. This means that 4-byte UTF-8 sequences become 6-byte CESU-8 sequences.
Note that CESU-8 is only intended for internal use within tightly-coupled systems, and not for data interchange.
This encoding is sometimes needed when working with Java, Oracle or MySQL, and when trying to store emoji, hieroglyphs, or other characters on the Supplementary Multilingual Plane or the Supplementary Ideographic Plane.
Some of this code is adapted from Rust's src/libcore/str.rs
file. This code is covered by LICENSE-RUST.txt and copyright by The Rust Project Developers and individual Rust contributors, as described in that file.
The new code in this project is distributed under the same terms.