Crate smart_format 

Composable, zero-allocation Display formatting combinators for Rust.

smart-format provides extension traits that add formatting operations to any type implementing core::fmt::Display. Each operation returns a lightweight wrapper struct that itself implements Display, so operations compose without intermediate allocations.

Design

The core idea: a struct that wraps T: Display and implements Display with a transformation is a zero-allocation combinator by construction. Chain them, and you get a streaming pipeline that composes through core::fmt::Formatter without intermediate String allocations.

Domain-specific transforms (HTML escaping, URL encoding, XML CDATA) are available behind feature flags so you only pay for what you use.

Features

• html — HTML escape, unescape, and attribute formatting
• url — URL percent-encoding (adds percent-encoding dependency)
• xml — XML CDATA wrapping
• full — enables all of the above

Modules

case

combinator

iter

prelude

str_buffer

Traits

DisplayExt