public RepoVersion GetLastTaggedVersion(Repository repo, out int commitsSinceTag)
{
var queryTags = from t in repo.Tags
let commit = t.PeeledTarget
where commit != null
select new
{
Commit = commit,
Tag = t
};
var lookup = queryTags.ToLookup(x => x.Commit.Id, x => x.Tag);
commitsSinceTag = 0;
RepoVersion lastTag = null;
foreach (var commit in repo.Commits)
{
var t = lookup[commit.Id];
var tag = t.FirstOrDefault()?.FriendlyName.TrimStart('v', 'V');
if (!string.IsNullOrEmpty(tag) && RepoVersion.TryParse(tag, out var v))
{
lastTag = v;
break;
}
commitsSinceTag++;
}
return(lastTag);
}
public RepoVersion CalculateVersion(Options options)
{
var finder = new GitFolderFinder();
var gitFolder = finder.FindGitFolder(options.Path);
if (gitFolder == null)
{
Console.WriteLine("not a git repository");
return(null);
}
var config = Configuration.Load(gitFolder, true);
if (config == null)
{
return(null);
}
var repo = new Repository(gitFolder);
var tagFinder = new TaggedVersionFinder();
var lastTag = tagFinder.GetLastTaggedVersion(repo, out var commitsSinceTag);
var major = lastTag?.Major ?? config.Major;
var minor = lastTag?.Minor ?? config.Minor;
var patch = lastTag?.Patch ?? 0;
var commits = lastTag?.Commits ?? 0;
var label = "";
var status = repo.RetrieveStatus();
// If nothing bumped it from the initial version
// set the version to 0.1.0
if (major == 0 & minor == 0 && patch == 0)
{
minor = 1;
}
if (commitsSinceTag > 0)
{
commits += commitsSinceTag;
// Only increase the patch if there is no pre-release tag on the last git tag
if (lastTag?.Label == "")
{
patch++;
commits = commitsSinceTag;
}
}
// Use the major/minor from the config only if it is greater
// than the calculated version
if (config.Major > major)
{
major = config.Major;
minor = config.Minor;
patch = 0;
}
else if (config.Major == major && config.Minor > minor)
{
minor = config.Minor;
patch = 0;
}
var labelCalculator = new LabelCalculator();
labelCalculator.CalculateLabel(repo, config, out var configLabel, out var isMainline);
// If we are exactly on a git tag use that pre-release value.
if (lastTag != null && commitsSinceTag == 0 && !status.IsDirty)
{
label = lastTag.Label;
}
// If a pre-release tag was specified on the command line use it.
else if (options.Label != null)
{
label = options.Label;
}
// If on a mainline branch but on a tagged commit, but there is a
// previous tag for the same {major}.{minor}.{patch}, use the
// pre-release tag from the last tag
else if (isMainline && lastTag != null && lastTag.Major == major && lastTag.Minor == minor && lastTag.Patch == patch)
{
label = lastTag.Label;
}
else
{
label = configLabel;
}
var version = new RepoVersion
{
Major = major,
Minor = minor,
Patch = patch,
Commits = commits,
Label = label,
IsDirty = status.IsDirty
};
return(version);
}
