cidr/parsers/
combinators.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
use std::net::{
	AddrParseError,
	IpAddr,
};

use crate::{
	errors::NetworkParseError,
	Address,
	AnyIpCidr,
	Cidr,
	Inet,
	IpCidr,
	IpInet,
};

/// Parse [`Cidr`] with custom address and network (when no '/' separator was found) parser
///
/// If a '/' is found, parse trailing number as prefix length and leading address with `address_parser`.
/// Otherwise parse with `host_parser`.
pub fn parse_cidr_full<C, AP, HP>(
	s: &str,
	address_parser: AP,
	host_parser: HP,
) -> Result<C, NetworkParseError>
where
	C: Cidr,
	AP: FnOnce(&str) -> Result<C::Address, AddrParseError>,
	HP: FnOnce(&str) -> Result<C, NetworkParseError>,
{
	match s.rfind('/') {
		None => host_parser(s),
		Some(pos) => C::new(address_parser(&s[0..pos])?, s[pos + 1..].parse()?),
	}
}

/// Parse [`Cidr`] with custom address parser
///
/// If a '/' is found, parse trailing number as prefix length and leading address with `address_parser`.
/// Otherwise parse `address_parser` and treat as host (maximum prefix length).
pub fn parse_cidr<C, AP>(s: &str, address_parser: AP) -> Result<C, NetworkParseError>
where
	C: Cidr,
	AP: Fn(&str) -> Result<C::Address, AddrParseError>,
{
	parse_cidr_full(s, &address_parser, |s| Ok(C::new_host(address_parser(s)?)))
}

/// Parse [`Cidr`] with custom address and network (when no '/' separator was found) parser
///
/// Similar to [`parse_cidr_full`] but ignores host bits in addresses.
pub fn parse_cidr_full_ignore_hostbits<C, AP, HP>(
	s: &str,
	address_parser: AP,
	host_parser: HP,
) -> Result<C, NetworkParseError>
where
	C: Cidr,
	AP: FnOnce(&str) -> Result<C::Address, AddrParseError>,
	HP: FnOnce(&str) -> Result<C, NetworkParseError>,
{
	match s.rfind('/') {
		None => host_parser(s),
		Some(pos) => {
			let inet = <C::Address as Address>::Inet::new(
				address_parser(&s[0..pos])?,
				s[pos + 1..].parse()?,
			)?;
			Ok(inet.network())
		},
	}
}

/// Parse [`Cidr`] with custom address parser
///
/// Similar to [`parse_cidr`] but ignores host bits in addresses.
pub fn parse_cidr_ignore_hostbits<C, AP>(
	s: &str,
	address_parser: AP,
) -> Result<C, NetworkParseError>
where
	C: Cidr,
	AP: Fn(&str) -> Result<C::Address, AddrParseError>,
{
	parse_cidr_full_ignore_hostbits(s, &address_parser, |s| Ok(C::new_host(address_parser(s)?)))
}

/// Parse [`AnyIpCidr`] with custom address and network (when no '/' separator was found) parser
///
/// Return [`AnyIpCidr::Any`] for `"any"`.
/// If a '/' is found, parse trailing number as prefix length and leading address with `address_parser`.
/// Otherwise parse with `host_parser`.
pub fn parse_any_cidr_full<AP, HP>(
	s: &str,
	address_parser: AP,
	host_parser: HP,
) -> Result<AnyIpCidr, NetworkParseError>
where
	AP: FnOnce(&str) -> Result<IpAddr, AddrParseError>,
	HP: FnOnce(&str) -> Result<IpCidr, NetworkParseError>,
{
	if s == "any" {
		return Ok(AnyIpCidr::Any);
	}
	match s.rfind('/') {
		None => Ok(host_parser(s)?.into()),
		Some(pos) => AnyIpCidr::new(address_parser(&s[0..pos])?, s[pos + 1..].parse()?),
	}
}

/// Parse [`AnyIpCidr`] with custom address parser
///
/// If a '/' is found, parse trailing number as prefix length and leading address with `address_parser`.
/// If input is just `"any"` returns [`AnyIpCidr::Any`].
/// Otherwise parse `address_parser` and treat as host (maximum prefix length).
pub fn parse_any_cidr<AP>(s: &str, address_parser: AP) -> Result<AnyIpCidr, NetworkParseError>
where
	AP: Fn(&str) -> Result<IpAddr, AddrParseError>,
{
	parse_any_cidr_full(s, &address_parser, |s| {
		Ok(IpCidr::new_host(address_parser(s)?))
	})
}

/// Parse [`AnyIpCidr`] with custom address and network (when no '/' separator was found) parser
///
/// Similar to [`parse_any_cidr_full`] but ignores host bits in addresses.
pub fn parse_any_cidr_full_ignore_hostbits<AP, HP>(
	s: &str,
	address_parser: AP,
	host_parser: HP,
) -> Result<AnyIpCidr, NetworkParseError>
where
	AP: FnOnce(&str) -> Result<IpAddr, AddrParseError>,
	HP: FnOnce(&str) -> Result<IpCidr, NetworkParseError>,
{
	if s == "any" {
		return Ok(AnyIpCidr::Any);
	}
	match s.rfind('/') {
		None => Ok(host_parser(s)?.into()),
		Some(pos) => Ok(
			IpInet::new(address_parser(&s[0..pos])?, s[pos + 1..].parse()?)?
				.network()
				.into(),
		),
	}
}

/// Parse [`AnyIpCidr`] with custom address parser
///
/// Similar to [`parse_any_cidr`] but ignores host bits in addresses.
pub fn parse_any_cidr_ignore_hostbits<AP>(
	s: &str,
	address_parser: AP,
) -> Result<AnyIpCidr, NetworkParseError>
where
	AP: Fn(&str) -> Result<IpAddr, AddrParseError>,
{
	parse_any_cidr_full_ignore_hostbits(s, &address_parser, |s| {
		Ok(IpCidr::new_host(address_parser(s)?))
	})
}

/// Parse [`Inet`] with custom address and network (when no '/' separator was found) parser
///
/// If a '/' is found, parse trailing number as prefix length and leading address with `address_parser`.
/// Otherwise parse with `host_parser`.
pub fn parse_inet_full<I, AP, HP>(
	s: &str,
	address_parser: AP,
	host_parser: HP,
) -> Result<I, NetworkParseError>
where
	I: Inet,
	AP: FnOnce(&str) -> Result<I::Address, AddrParseError>,
	HP: FnOnce(&str) -> Result<I, NetworkParseError>,
{
	match s.rfind('/') {
		None => host_parser(s),
		Some(pos) => Ok(I::new(address_parser(&s[0..pos])?, s[pos + 1..].parse()?)?),
	}
}

/// Parse [`Inet`] with custom address parser
///
/// If a '/' is found, parse trailing number as prefix length and leading address with `address_parser`.
/// Otherwise parse `address_parser` and treat as host (maximum prefix length).
pub fn parse_inet<I, AP>(s: &str, address_parser: AP) -> Result<I, NetworkParseError>
where
	I: Inet,
	AP: Fn(&str) -> Result<I::Address, AddrParseError>,
{
	parse_inet_full(s, &address_parser, |s| Ok(I::new_host(address_parser(s)?)))
}