Google Git
Sign in
android / platform / external / rust / crates / heck / refs/tags/android-14.0.0_r20
tagfde8a86cb4402c73d514f30917cc647b32e13115
taggerThe Android Open Source Project <initial-contribution@android.com>Wed Jan 03 15:47:29 2024 -0800
object9a0524e7b9eccae98cd8a3c170bb0187c08e6252 
Android 14.0.0 release 20
commit9a0524e7b9eccae98cd8a3c170bb0187c08e6252[log] [tgz]
authorMatthew Maurer <mmaurer@google.com>Thu Mar 09 18:07:17 2023 +0000
committerAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>Thu Mar 09 18:07:17 2023 +0000
tree23a6f8a5c260b8f34c2d84dd0e11a8cf08682f92
parent5f67e400a65d6c234a7696b9e6f0f7dd86723fb5 [diff]
parentf8c41f86af22f7a7f4351b8af29056f93870332e [diff]
Make heck available to product and vendor am: 53b364a432 am: 467d2b1d77 am: 835ee383e8 am: f8c41f86af

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/heck/+/2476414

Change-Id: Ic6d2e55ff65bdecaf3ca08880118498ba0d89424
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
tree: 23a6f8a5c260b8f34c2d84dd0e11a8cf08682f92
  1. 0.3.3/
  2. patches/
  3. src/
  4. LICENSE ⇨ LICENSE-APACHE
  5. NOTICE ⇨ LICENSE
  6. .cargo_vcs_info.json
  7. .gitignore
  8. Android.bp
  9. Cargo.toml
  10. Cargo.toml.orig
  11. cargo2android.json
  12. CHANGELOG.md
  13. LICENSE-APACHE
  14. LICENSE-MIT
  15. METADATA
  16. MODULE_LICENSE_APACHE2
  17. OWNERS
  18. README.md
  19. TEST_MAPPING
README.md

heck is a case conversion library

I specifically requested the opposite of this.

This library exists to provide case conversion between common cases like CamelCase and snake_case. It is intended to be unicode aware, internally consistent, and reasonably well performing.

Definition of a word boundary

Word boundaries are defined as the “unicode words” defined in the unicode_segmentation library, as well as within those words in this manner:

  1. All underscore characters are considered word boundaries.
  2. If an uppercase character is followed by lowercase letters, a word boundary is considered to be just prior to that uppercase character.
  3. If multiple uppercase characters are consecutive, they are considered to be within a single word, except that the last will be part of the next word if it is followed by lowercase characters (see rule 2).

That is, “HelloWorld” is segmented Hello|World whereas “XMLHttpRequest” is segmented XML|Http|Request.

Characters not within words (such as spaces, punctuations, and underscores) are not included in the output string except as they are a part of the case being converted to. Multiple adjacent word boundaries (such as a series of underscores) are folded into one. (“hello__world” in snake case is therefore “hello_world”, not the exact same string). Leading or trailing word boundary indicators are dropped, except insofar as CamelCase capitalizes the first word.

Cases contained in this library:

  1. UpperCamelCase
  2. lowerCamelCase
  3. snake_case
  4. kebab-case
  5. SHOUTY_SNAKE_CASE
  6. Title Case
  7. SHOUTY-KEBAB-CASE
  8. Train-Case

Contributing

PRs of additional well-established cases welcome.

This library is a little bit opinionated (dropping punctuation, for example). If that doesn't fit your use case, I hope there is another crate that does. I would prefer not to receive PRs to make this behavior more configurable.

Bug reports & fixes always welcome. :-)

MSRV

The minimum supported Rust version for this crate is 1.32.0. This may change in minor or patch releases, but we probably won't ever require a very recent version. If you would like to have a stronger guarantee than that, please open an issue.

License

heck is distributed under the terms of both the MIT license and the Apache License (Version 2.0).

See LICENSE-APACHE and LICENSE-MIT for details.