Return the known scheme for a non-normalized string, if known

Synopsis

scheme
string_to_scheme(core::string_view s) noexcept;

Description

If the string does not identify a known scheme, the value scheme::unknown is returned.

BNF

scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )

Specification

• 3.1. Scheme (rfc3986)

Return Value

The known scheme

Parameters

Name	Description
s	The string holding the scheme