Crate wayfind 

wayfind

A speedy, flexible router.

Syntax

Static

Static template parts are treated as-is.

• No percent-decoding occurs.
• Templates are case-sensitive.

The leading static part of a template must start with a /.

Example

use wayfind::RouterBuilder;

let mut builder = RouterBuilder::new();
builder.insert("/hello", 1)?;
builder.insert("/hello/world", 2)?;

let router = builder.build();

let search = router.search("/hello").unwrap();
assert_eq!(search.data(), &1);
assert_eq!(search.template(), "/hello");

let search = router.search("/hello/world").unwrap();
assert_eq!(search.data(), &2);
assert_eq!(search.template(), "/hello/world");

assert!(router.search("/world").is_none());

Dynamic

Dynamic parameters can match any byte, excluding the path delimiter /.

Supported forms:

• whole segment parameters: /<name>/
• inline parameters: /<name>.txt

Example

use wayfind::RouterBuilder;

let mut builder = RouterBuilder::new();
builder.insert("/users/<id>", 1)?;
builder.insert("/users/<id>/files/<filename>.pdf", 2)?;

let router = builder.build();

let search = router.search("/users/123").unwrap();
assert_eq!(search.data(), &1);
assert_eq!(search.template(), "/users/<id>");
assert_eq!(search.parameters(), &[("id", "123")]);

let search = router.search("/users/123/files/my.document.pdf").unwrap();
assert_eq!(search.data(), &2);
assert_eq!(search.template(), "/users/<id>/files/<filename>.pdf");
assert_eq!(search.parameters(), &[("id", "123"), ("filename", "my.document")]);

Wildcard

Wildcard parameters can match any byte, including the path delimiter /.

Supported forms:

• inline wildcards: /<*path>.html
• mid-route wildcards: /api/<*path>/help
• end-route catch-all: /<*catch_all>

Example

use wayfind::RouterBuilder;

let mut builder = RouterBuilder::new();
builder.insert("/files/<*slug>/delete", 1)?;
builder.insert("/<*catch_all>", 2)?;

let router = builder.build();

let search = router.search("/files/documents/reports/annual.pdf/delete").unwrap();
assert_eq!(search.data(), &1);
assert_eq!(search.template(), "/files/<*slug>/delete");
assert_eq!(search.parameters(), &[("slug", "documents/reports/annual.pdf")]);

let search = router.search("/any/other/path").unwrap();
assert_eq!(search.data(), &2);
assert_eq!(search.template(), "/<*catch_all>");
assert_eq!(search.parameters(), &[("catch_all", "any/other/path")]);

Priority

When searching, each node tries its children in priority order:

1. Static: /users
2. Dynamic: /<id>
3. Wildcard: /<*path>

All parameters are greedy, consuming as much of the path as possible.

Display

The router can be printed as a tree, via a Display implementation.

Structs

Match

Stores data from a successful router match.

Router

An immutable, optimized router.

RouterBuilder

A mutable builder for constructing a Router.

Enums

InsertError

An error that occurred while inserting a template.