wehub-resource-sync
70 lines
2.9 KiB
C#
70 lines
2.9 KiB
C#
#nullable enable
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using System;
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using System.IO;
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using System.Reflection;
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namespace T3.Core.Compilation;
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/// <summary>
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/// Common info container for package loading and versioning, and the source of truth for
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/// whether this build is a prerelease — see <see cref="IsPreview"/>.
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/// </summary>
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public static class RuntimeAssemblies
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{
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public const string NetVersion = "10.0";
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// Static field initialisers run in source order — every public field below depends on
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// _coreAssembly, so it must be declared first.
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private static readonly Assembly _coreAssembly = typeof(RuntimeAssemblies).Assembly;
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public static readonly string CoreDirectory = Path.GetDirectoryName(_coreAssembly.Location)!;
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/// <summary>4-part numeric assembly version (e.g. <c>4.2.0.2</c>). Excludes any semver prerelease segment.</summary>
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public static readonly Version Version = _coreAssembly.GetName().Version!;
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/// <summary>
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/// Prerelease segment of the semver — empty for stable builds, <c>"alpha"</c> (or a future
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/// <c>"beta.2"</c>, <c>"rc.1"</c>) for prerelease builds.
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/// </summary>
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public static readonly string VersionSuffix = ParseVersionSuffix();
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/// <summary>
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/// True for any prerelease build. Permissive on purpose so future <c>beta</c> / <c>rc</c>
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/// cycles get the same isolation without a code change.
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/// </summary>
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public static readonly bool IsPreview = !string.IsNullOrEmpty(VersionSuffix);
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public static readonly bool IsAlpha = !string.IsNullOrEmpty(VersionSuffix) && string.Equals(VersionSuffix, "alpha", StringComparison.Ordinal);
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/// <summary>
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/// Version formatted as semver without commit SHA — e.g. <c>"4.2.0.2-alpha"</c> or <c>"4.2.0.2"</c>.
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/// </summary>
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public static readonly string FormattedVersion = string.IsNullOrEmpty(VersionSuffix)
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? Version.ToString()
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: $"{Version}-{VersionSuffix}";
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/// <summary>
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/// Reads the prerelease segment from <see cref="AssemblyInformationalVersionAttribute"/>.
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/// The informational version is <c>"<numeric>[-<suffix>][+<sha>]"</c>; we want
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/// everything between the first <c>-</c> and the optional <c>+</c>.
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/// </summary>
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private static string ParseVersionSuffix()
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{
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var informational = _coreAssembly
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.GetCustomAttribute<AssemblyInformationalVersionAttribute>()
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?.InformationalVersion;
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if (string.IsNullOrEmpty(informational))
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return string.Empty;
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var plusIndex = informational.IndexOf('+');
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var withoutSha = plusIndex >= 0 ? informational[..plusIndex] : informational;
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var dashIndex = withoutSha.IndexOf('-');
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if (dashIndex < 0 || dashIndex == withoutSha.Length - 1)
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return string.Empty;
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return withoutSha[(dashIndex + 1)..];
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}
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}
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