Crate roe[−][src]
This crate provides Unicode case mapping routines and iterators for conventionally UTF-8 binary strings.
Unicode case mapping or case conversion can be used to transform the characters in a string. To quote the Unicode FAQ:
Case mapping or case conversion is a process whereby strings are converted to a particular form—uppercase, lowercase, or titlecase—possibly for display to the user.
This crate is currently a work in progress. When the API is complete, Roe will support lowercase, uppercase, titlecase, and case folding iterators for conventionally UTF-8 byte slices.
Roe will implement support for full, Turkic, ASCII, and case folding transforms.
Usage
You can convert case like:
assert_eq!( roe::lowercase(b"Artichoke Ruby", LowercaseMode::Ascii).collect::<Vec<_>>(), b"artichoke ruby" ); assert_eq!( roe::uppercase("Αύριο".as_bytes(), UppercaseMode::Full).collect::<Vec<_>>(), "ΑΎΡΙΟ".as_bytes() );
Roe provides fast path routines that assume the byte slice is ASCII-only.
Crate Features
Roe is no_std
compatible with an optional dependency on the alloc
crate.
Roe has several Cargo features, all of which are enabled by default:
- std - Adds a dependency on
std
, the Rust Standard Library. This feature enablesstd::error::Error
implementations on error types in this crate. Enabling the std feature also enables the alloc feature. - alloc - Adds a dependency on
alloc
, the Rust allocation and collections library. This feature enables APIs that allocateString
orVec
.
Structs
InvalidCaseMappingMode | Error that indicates a failure to parse a |
Lowercase | An iterator that yields the lowercase equivalent of a conventionally UTF-8 byte string. |
Uppercase | An iterator that yields the uppercase equivalent of a conventionally UTF-8 byte string. |
Enums
LowercaseMode | Options to configure the behavior of |
UppercaseMode | Options to configure the behavior of |
Functions
lowercase | Returns an iterator that yields a copy of the bytes in the given slice with all uppercase letters replaced with their lowercase counterparts. |
make_ascii_lowercase | Converts the given slice to its ASCII lower case equivalent in-place. |
make_ascii_titlecase | Converts the given slice to its ASCII title case equivalent in-place. |
make_ascii_uppercase | Converts the given slice to its ASCII upper case equivalent in-place. |
to_ascii_lowercase | alloc Returns a vector containing a copy of the given slice where each byte is mapped to its ASCII lower case equivalent. |
to_ascii_titlecase | alloc Returns a vector containing a copy of the given slice where each byte is mapped to its ASCII title case equivalent. |
to_ascii_uppercase | alloc Returns a vector containing a copy of the given slice where each byte is mapped to its ASCII upper case equivalent. |
uppercase | Returns an iterator that yields a copy of the bytes in the given slice with all lowercase letters replaced with their uppercase counterparts. |