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NextVersionCalculator.cs
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NextVersionCalculator.cs
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using System;
using System.Linq;
using GitVersion.Common;
using GitVersion.Configuration;
using GitVersion.Extensions;
using GitVersion.Logging;
namespace GitVersion.VersionCalculation
{
public class NextVersionCalculator : INextVersionCalculator
{
private readonly ILog log;
private readonly IBaseVersionCalculator baseVersionCalculator;
private readonly IMainlineVersionCalculator mainlineVersionCalculator;
private readonly IRepositoryMetadataProvider repositoryMetadataProvider;
private readonly Lazy<GitVersionContext> versionContext;
private GitVersionContext context => versionContext.Value;
public NextVersionCalculator(ILog log, IBaseVersionCalculator baseVersionCalculator,
IMainlineVersionCalculator mainlineVersionCalculator, IRepositoryMetadataProvider repositoryMetadataProvider,
Lazy<GitVersionContext> versionContext)
{
this.log = log ?? throw new ArgumentNullException(nameof(log));
this.baseVersionCalculator = baseVersionCalculator ?? throw new ArgumentNullException(nameof(baseVersionCalculator));
this.mainlineVersionCalculator = mainlineVersionCalculator ?? throw new ArgumentNullException(nameof(mainlineVersionCalculator));
this.repositoryMetadataProvider = repositoryMetadataProvider ?? throw new ArgumentNullException(nameof(repositoryMetadataProvider));
this.versionContext = versionContext ?? throw new ArgumentNullException(nameof(versionContext));
}
public SemanticVersion FindVersion()
{
log.Info($"Running against branch: {context.CurrentBranch.FriendlyName} ({(context.CurrentCommit == null ? "-" : context.CurrentCommit.Sha)})");
if (context.IsCurrentCommitTagged)
{
log.Info($"Current commit is tagged with version {context.CurrentCommitTaggedVersion}, " +
"version calculation is for metadata only.");
}
EnsureHeadIsNotDetached(context);
SemanticVersion taggedSemanticVersion = null;
if (context.IsCurrentCommitTagged)
{
// Will always be 0, don't bother with the +0 on tags
var semanticVersionBuildMetaData = mainlineVersionCalculator.CreateVersionBuildMetaData(context.CurrentCommit);
semanticVersionBuildMetaData.CommitsSinceTag = null;
var semanticVersion = new SemanticVersion(context.CurrentCommitTaggedVersion)
{
BuildMetaData = semanticVersionBuildMetaData
};
taggedSemanticVersion = semanticVersion;
}
var baseVersion = baseVersionCalculator.GetBaseVersion();
SemanticVersion semver;
if (context.Configuration.VersioningMode == VersioningMode.Mainline)
{
semver = mainlineVersionCalculator.FindMainlineModeVersion(baseVersion);
}
else
{
semver = PerformIncrement(baseVersion);
semver.BuildMetaData = mainlineVersionCalculator.CreateVersionBuildMetaData(baseVersion.BaseVersionSource);
}
var hasPreReleaseTag = semver.PreReleaseTag.HasTag();
var branchConfigHasPreReleaseTagConfigured = !string.IsNullOrEmpty(context.Configuration.Tag);
var preReleaseTagDoesNotMatchConfiguration = hasPreReleaseTag && branchConfigHasPreReleaseTagConfigured && semver.PreReleaseTag.Name != context.Configuration.Tag;
if (!semver.PreReleaseTag.HasTag() && branchConfigHasPreReleaseTagConfigured || preReleaseTagDoesNotMatchConfiguration)
{
UpdatePreReleaseTag(semver, baseVersion.BranchNameOverride);
}
if (taggedSemanticVersion != null)
{
// replace calculated version with tagged version only if tagged version greater or equal to calculated version
if (semver.CompareTo(taggedSemanticVersion, false) > 0)
{
taggedSemanticVersion = null;
}
else
{
// set the commit count on the tagged ver
taggedSemanticVersion.BuildMetaData.CommitsSinceVersionSource = semver.BuildMetaData.CommitsSinceVersionSource;
}
}
return taggedSemanticVersion ?? semver;
}
private SemanticVersion PerformIncrement(BaseVersion baseVersion)
{
var semver = baseVersion.SemanticVersion;
var increment = repositoryMetadataProvider.DetermineIncrementedField(baseVersion, context);
if (increment != null)
{
semver = semver.IncrementVersion(increment.Value);
}
else log.Info("Skipping version increment");
return semver;
}
private void UpdatePreReleaseTag(SemanticVersion semanticVersion, string branchNameOverride)
{
var tagToUse = context.Configuration.GetBranchSpecificTag(log, context.CurrentBranch.FriendlyName, branchNameOverride);
int? number = null;
var lastTag = repositoryMetadataProvider
.GetVersionTagsOnBranch(context.CurrentBranch, context.Configuration.GitTagPrefix)
.FirstOrDefault(v => v.PreReleaseTag.Name.IsEquivalentTo(tagToUse));
if (lastTag != null &&
MajorMinorPatchEqual(lastTag, semanticVersion) &&
lastTag.PreReleaseTag.HasTag())
{
number = lastTag.PreReleaseTag.Number + 1;
}
number ??= 1;
semanticVersion.PreReleaseTag = new SemanticVersionPreReleaseTag(tagToUse, number);
}
private static void EnsureHeadIsNotDetached(GitVersionContext context)
{
if (!context.CurrentBranch.IsDetachedHead())
{
return;
}
var message = string.Format(
"It looks like the branch being examined is a detached Head pointing to commit '{0}'. " +
"Without a proper branch name GitVersion cannot determine the build version.",
context.CurrentCommit.Id.ToString(7));
throw new WarningException(message);
}
private static bool MajorMinorPatchEqual(SemanticVersion lastTag, SemanticVersion baseVersion)
{
return lastTag.Major == baseVersion.Major &&
lastTag.Minor == baseVersion.Minor &&
lastTag.Patch == baseVersion.Patch;
}
}
}