lduchosal / ipnetwork / 960

Committed 15 May 2026 07:18AM UTC coverage: 0.0% (-94.1%) from 94.053%

Build # 960

Build Type

Pull #411

appveyor

Committed by

web-flow

Commit Message

Merge ef6b054ce into 4cec191ae

Pull Request Pull Request #411: Bump MSTest.TestFramework from 4.2.2 to 4.2.3

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/src/System.Net.IPNetwork/IPNetwork2ToCidr.cs

// <copyright file="IPNetwork2ToCidr.cs" company="IPNetwork">
// Copyright (c) IPNetwork. All rights reserved.
// </copyright>

namespace System.Net;

using System.Net.Sockets;
using System.Numerics;

/// <summary>
/// ToCidr.
/// </summary>
public sealed partial class IPNetwork2
{
    /// <summary>
    /// Convert netmask to CIDR
    ///  255.255.255.0 -> 24
    ///  255.255.0.0   -> 16
    ///  255.0.0.0     -> 8.
    /// </summary>
    /// <param name="netmask">An IP Address representing the CIDR to convert.</param>
    /// <returns>A byte representing the CIDR converted from the netmask.</returns>
    public static byte ToCidr(IPAddress netmask)
    {
        bool cidrified = InternalToCidr(false, netmask, out byte cidr);
        if (!cidrified)
        {
            throw new ArgumentException("Invalid netmask.", nameof(netmask));
        }
        return cidr;
    }

    /// <summary>
    /// Convert netmask to CIDR
    ///  255.255.255.0 -> 24
    ///  255.255.0.0   -> 16
    ///  255.0.0.0     -> 8.
    /// </summary>
    /// <param name="netmask">An IPAddress representing the CIDR to convert.</param>
    /// <param name="cidr">A byte representing the netmask in cidr format (/24).</param>
    /// <returns>true if netmask was converted successfully; otherwise, false.</returns>
    public static bool TryToCidr(IPAddress netmask, out byte cidr)
    {
        return InternalToCidr(true, netmask, out cidr);
    }

    private static bool InternalToCidr(bool tryParse, IPAddress netmask, out byte cidr)
    {
        if (netmask == null)
        {
            if (!tryParse)
            {
                throw new ArgumentNullException(nameof(netmask));
            }

            cidr = 0;
            return false;
        }

        TryToBigInteger(netmask, out BigInteger uintNetmask2);
        bool cidrified = InternalToCidr(tryParse, uintNetmask2, netmask.AddressFamily, out cidr);
        return cidrified;
    }

    /// <summary>
    /// Convert netmask to CIDR
    ///  255.255.255.0 -> 24
    ///  255.255.0.0   -> 16
    ///  255.0.0.0     -> 8.
    /// </summary>
    /// <param name="tryParse">Whether to throw exception or not during conversion.</param>
    /// <param name="netmask">A number representing the netmask to convert.</param>
    /// <param name="family">Either IPv4 or IPv6.</param>
    /// <param name="cidr">A byte representing the netmask in cidr format (/24).</param>
    private static bool InternalToCidr(bool tryParse, BigInteger netmask, AddressFamily family, out byte cidr)
    {
        if (!InternalValidNetmask(netmask, family))
        {
            if (!tryParse)
            {
                throw new ArgumentException("Invalid netmask.", nameof(netmask));
            }

            cidr = 0;
            return false;
        }

        byte cidr2 = BitsSet(netmask);
        cidr = cidr2;
        return true;
    }
}

1	// <copyright file="IPNetwork2ToCidr.cs" company="IPNetwork">
2	// Copyright (c) IPNetwork. All rights reserved.
3	// </copyright>
4
5	namespace System.Net;
6
7	using System.Net.Sockets;
8	using System.Numerics;
9
10	/// <summary>
11	/// ToCidr.
12	/// </summary>
13	public sealed partial class IPNetwork2
14	{
15	/// <summary>
16	/// Convert netmask to CIDR
17	/// 255.255.255.0 -> 24
18	/// 255.255.0.0 -> 16
19	/// 255.0.0.0 -> 8.
20	/// </summary>
21	/// <param name="netmask">An IP Address representing the CIDR to convert.</param>
22	/// <returns>A byte representing the CIDR converted from the netmask.</returns>
23	public static byte ToCidr(IPAddress netmask)
24	{	×
25	bool cidrified = InternalToCidr(false, netmask, out byte cidr);	×
26	if (!cidrified)	×
27	{	×
28	throw new ArgumentException("Invalid netmask.", nameof(netmask));	×
29	}
30	return cidr;	×
31	}	×
32
33	/// <summary>
34	/// Convert netmask to CIDR
35	/// 255.255.255.0 -> 24
36	/// 255.255.0.0 -> 16
37	/// 255.0.0.0 -> 8.
38	/// </summary>
39	/// <param name="netmask">An IPAddress representing the CIDR to convert.</param>
40	/// <param name="cidr">A byte representing the netmask in cidr format (/24).</param>
41	/// <returns>true if netmask was converted successfully; otherwise, false.</returns>
42	public static bool TryToCidr(IPAddress netmask, out byte cidr)
43	{	×
44	return InternalToCidr(true, netmask, out cidr);	×
45	}	×
46
47	private static bool InternalToCidr(bool tryParse, IPAddress netmask, out byte cidr)
48	{	×
49	if (netmask == null)	×
50	{	×
51	if (!tryParse)	×
52	{	×
53	throw new ArgumentNullException(nameof(netmask));	×
54	}
55
56	cidr = 0;	×
57	return false;	×
58	}
59
60	TryToBigInteger(netmask, out BigInteger uintNetmask2);	×
61	bool cidrified = InternalToCidr(tryParse, uintNetmask2, netmask.AddressFamily, out cidr);	×
62	return cidrified;	×
63	}	×
64
65	/// <summary>
66	/// Convert netmask to CIDR
67	/// 255.255.255.0 -> 24
68	/// 255.255.0.0 -> 16
69	/// 255.0.0.0 -> 8.
70	/// </summary>
71	/// <param name="tryParse">Whether to throw exception or not during conversion.</param>
72	/// <param name="netmask">A number representing the netmask to convert.</param>
73	/// <param name="family">Either IPv4 or IPv6.</param>
74	/// <param name="cidr">A byte representing the netmask in cidr format (/24).</param>
75	private static bool InternalToCidr(bool tryParse, BigInteger netmask, AddressFamily family, out byte cidr)
76	{	×
77	if (!InternalValidNetmask(netmask, family))	×
78	{	×
79	if (!tryParse)	×
80	{	×
81	throw new ArgumentException("Invalid netmask.", nameof(netmask));	×
82	}
83
84	cidr = 0;	×
85	return false;	×
86	}
87
88	byte cidr2 = BitsSet(netmask);	×
89	cidr = cidr2;	×
90	return true;	×
91	}	×
92	}

lduchosal / ipnetwork / 960

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