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// Copyright (C) 2017 1aim GmbH
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use serde_derive::{Deserialize, Serialize};
use std::fmt;
/// The national number part of a phone number.
#[derive(Copy, Clone, Eq, PartialEq, Serialize, Deserialize, Hash, Debug)]
pub struct NationalNumber {
pub(crate) value: u64,
}
impl NationalNumber {
pub fn new(value: u64, zeros: u8) -> Result<Self, crate::error::Parse> {
// E.164 specifies a maximum of 15 decimals, which corresponds to slightly over 48.9 bits.
// 56 bits ought to cut it here.
if value >= (1 << 56) {
return Err(crate::error::Parse::TooLong);
}
Ok(Self {
value: ((zeros as u64) << 56) | value,
})
}
/// The number without any leading zeroes.
pub fn value(&self) -> u64 {
self.value & 0x00ffffffffffffff
}
/// The number of leading zeroes.
///
/// In some countries, the national (significant) number starts with one or
/// more "0"s without this being a national prefix or trunk code of some
/// kind. For example, the leading zero in the national (significant) number
/// of an Italian phone number indicates the number is a fixed-line number.
/// There have been plans to migrate fixed-line numbers to start with the
/// digit two since December 2000, but it has not happened yet. See
/// [Telephone numbers in Italy](http://en.wikipedia.org/wiki/%2B39) for more
/// details.
///
/// These fields can be safely ignored (there is no need to set them) for
/// most countries. Some limited number of countries behave like Italy - for
/// these cases, if the leading zero(s) of a number would be retained even
/// when dialling internationally, set this flag to true, and also set the
/// number of leading zeros.
///
/// Clients who use the parsing or conversion functionality of the i18n phone
/// number libraries will have these fields set if necessary automatically.
pub fn zeros(&self) -> u8 {
(self.value >> 56) as u8
}
}
impl From<NationalNumber> for u64 {
fn from(n: NationalNumber) -> u64 {
n.value
}
}
impl fmt::Display for NationalNumber {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
for _ in 0..self.zeros() {
write!(f, "0")?;
}
write!(f, "{}", self.value())
}
}