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SemanticVersion.cs (2510B)

      1 // -----------------------------------------------------------------------------
      2 // <copyright file="SemanticVersion.cs" company="Microsoft Corporation">
      3 //     Copyright (c) Microsoft Corporation. Licensed under the MIT License.
      4 // </copyright>
      5 // -----------------------------------------------------------------------------
      6 
      7 namespace Microsoft.Management.Configuration.Processor.Helpers
      8 {
      9     using System;
     10 
     11     /// <summary>
     12     /// A semantic version.
     13     /// </summary>
     14     internal class SemanticVersion
     15     {
     16         private const string MaxRange = "999999999";
     17 
     18         private readonly string semanticVersion;
     19 
     20         /// <summary>
     21         /// Initializes a new instance of the <see cref="SemanticVersion"/> class.
     22         /// </summary>
     23         /// <param name="version">Version.</param>
     24         public SemanticVersion(string version)
     25         {
     26             this.semanticVersion = GetMaximumVersion(version);
     27 
     28             // Prerelease versions append the prerelease tag after a -
     29             // PowerShell doesn't handle semantic versions.
     30             if (this.semanticVersion.Contains("-"))
     31             {
     32                 var indexOf = this.semanticVersion.IndexOf("-");
     33                 this.Version = new Version(this.semanticVersion[..indexOf]);
     34                 this.PrereleaseTag = this.semanticVersion[(indexOf + 1) ..];
     35             }
     36             else
     37             {
     38                 this.Version = new Version(this.semanticVersion);
     39             }
     40         }
     41 
     42         /// <summary>
     43         /// Gets the version without a prerelease tag.
     44         /// </summary>
     45         public Version Version { get; }
     46 
     47         /// <summary>
     48         /// Gets prerelease tag if any.
     49         /// </summary>
     50         public string? PrereleaseTag { get; } = null;
     51 
     52         /// <summary>
     53         /// Gets a value indicating whether if the semantic version is prerelease.
     54         /// </summary>
     55         public bool IsPrerelease => !string.IsNullOrEmpty(this.PrereleaseTag);
     56 
     57         /// <inheritdoc/>
     58         public override string ToString()
     59         {
     60             return this.semanticVersion;
     61         }
     62 
     63         /// <summary>
     64         /// Max out a version by replacing * if needed.
     65         /// </summary>
     66         /// <param name="version">Version.</param>
     67         /// <returns>Maxed version.</returns>
     68         private static string GetMaximumVersion(string version)
     69         {
     70             return version.Replace("*", MaxRange);
     71         }
     72     }
     73 }