Validates IRI query.

This validator corresponds to RiQueryStr and RiQueryString types.

Note that the first ? character in an IRI is not a part of a query. For example, https://example.com/?foo#bar has a query foo, not ?foo.

Examples

This type can have an IRI query. Note that the IRI foo://bar/baz?qux#quux has the query qux, not ?qux.

use iri_string::{spec::UriSpec, validate::query};
assert!(query::<UriSpec>("").is_ok());
assert!(query::<UriSpec>("foo").is_ok());
assert!(query::<UriSpec>("foo/bar").is_ok());
assert!(query::<UriSpec>("/foo/bar").is_ok());
assert!(query::<UriSpec>("//foo/bar").is_ok());
assert!(query::<UriSpec>("https://user:pass@example.com:8080").is_ok());
assert!(query::<UriSpec>("https://example.com/").is_ok());
// Question sign `?` can appear in an IRI query.
assert!(query::<UriSpec>("query?again").is_ok());

Some characters and sequences cannot used in a query.

use iri_string::{spec::UriSpec, validate::query};
// `<` and `>` cannot directly appear in an IRI reference.
assert!(query::<UriSpec>("<not allowed>").is_err());
// Broken percent encoding cannot appear in an IRI reference.
assert!(query::<UriSpec>("%").is_err());
assert!(query::<UriSpec>("%GG").is_err());
// Hash sign `#` cannot appear in an IRI query.
assert!(query::<UriSpec>("#hash").is_err());