libsip 0.2.6

SIP protocol Implementation, with a focus towords softphone clients.
Documentation 
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use serde::{Deserialize, Serialize};

use nom::{branch::alt, bytes::complete::tag_no_case, combinator::map, error::ParseError, IResult};
use std::fmt;

/// Sip URI Schema.
#[derive(Debug, PartialEq, Clone, Copy, Serialize, Deserialize)]
pub enum UriSchema {
    Sip,
    Sips,
}

impl fmt::Display for UriSchema {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            UriSchema::Sip => write!(f, "sip"),
            UriSchema::Sips => write!(f, "sips"),
        }
    }
}

/// Parse SIP URI schema. Only Accepts 'sip' and 'sips'.
pub fn parse_schema<'a, E: ParseError<&'a [u8]>>(
    input: &'a [u8],
) -> IResult<&'a [u8], UriSchema, E> {
    alt::<_, _, E, _>((
        map(tag_no_case::<_, _, E>("sip"), |_| UriSchema::Sip),
        map(tag_no_case::<_, _, E>("sips"), |_| UriSchema::Sips),
    ))(input)
}