// Copyright Keysight Technologies 2012-2019
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, you can obtain one at http://mozilla.org/MPL/2.0/.
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using System;
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using System.Linq;
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namespace OpenTap.Package
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{
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/// <summary>
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/// Uniquely identifies a package in the OpenTAP package system.
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/// </summary>
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public interface IPackageIdentifier
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{
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/// <summary>
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/// The name of the package.
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/// </summary>
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string Name { get; }
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/// <summary>
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/// The Semantic Version compliant version of the package.
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/// </summary>
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SemanticVersion Version { get; }
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/// <summary>
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/// The CPU Architechture of the package.
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/// </summary>
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CpuArchitecture Architecture { get; }
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/// <summary>
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/// Comma seperated list of operating systems that this package can run on.
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/// </summary>
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string OS { get; }
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}
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/// <summary>
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/// Extensions to IPackageIdentifier.
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/// </summary>
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public static class IPackageIdentifierExtensions
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{
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private static string[] SplitOs(string os)
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{
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if (os == null) return Array.Empty<string>();
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return os.Split(',').Select(o => o.Trim()).Where(o => !string.IsNullOrWhiteSpace(o)).ToArray();
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}
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/// <summary>
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/// True if this package is compatible (can be installed on) the specified operating system and architecture
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/// </summary>
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/// <param name="pkg"></param>
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/// <param name="selectedArch">Specifies a CPU architecture. If unspecified, the current host architecture is used.</param>
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/// <param name="selectedOS">Specifies an operating system. If null, the current host operating system is used.</param>
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/// <returns></returns>
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public static bool IsPlatformCompatible(this IPackageIdentifier pkg, CpuArchitecture selectedArch = CpuArchitecture.Unspecified, string selectedOS = null)
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{
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var cpu = selectedArch == CpuArchitecture.Unspecified ? ArchitectureHelper.GuessBaseArchitecture : selectedArch;
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var os = selectedOS ?? OperatingSystem.Current.ToString();
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if (ArchitectureHelper.CompatibleWith(cpu, pkg.Architecture) == false)
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return false;
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if (string.IsNullOrWhiteSpace(pkg.OS) || string.IsNullOrWhiteSpace(os))
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return true;
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var oses = SplitOs(os);
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return oses.Any(o => IsOsCompatible(pkg, o));
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}
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internal static bool IsOsCompatible(this IPackageIdentifier pkg, string os)
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{
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var supported = SplitOs(pkg.OS);
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return supported.Contains(os, StringComparer.OrdinalIgnoreCase);
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}
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}
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}
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