private static GithubReference ParseGithubUrl(Uri input)
{
if (input.Host != "github.com")
{
return(null);
}
var pathParts = input.PathAndQuery.Split(new[] { '/' }, 4, StringSplitOptions.RemoveEmptyEntries);
int issue;
if (pathParts.Length == 4 &&
pathParts[2] == "pull" &&
Int32.TryParse(pathParts[3], out issue))
{
return(GithubReference.FromIssue(pathParts[0], pathParts[1], issue));
}
if (pathParts.Length == 4 &&
pathParts[2] == "tree")
{
return(GithubReference.FromBranch(pathParts[0], pathParts[1], pathParts[3]));
}
if (pathParts.Length == 4 &&
pathParts[2] == "compare")
{
return(ParseCommitOrBranch(pathParts[0], pathParts[1], pathParts[3]));
}
return(null);
}
public static GithubReference Parse(string input)
{
Uri uri;
if (Uri.TryCreate(input, UriKind.Absolute, out uri))
{
return(ParseGithubUrl(uri));
}
if (input.Trim().Contains(" "))
{
return(null);
}
if (input.Contains("#"))
{
var hashSplit = input.Split(new[] { '#' }, 2);
var beforeHash = hashSplit[0];
var afterHash = hashSplit[1];
int issue;
if (!int.TryParse(afterHash, out issue))
{
return(null);
}
if (beforeHash.Contains("/"))
{
var slashSplit = beforeHash.Split(new[] { '/' }, 2);
return(GithubReference.FromIssue(slashSplit[0], slashSplit[1], issue));
}
if (String.IsNullOrWhiteSpace(beforeHash))
{
beforeHash = null;
}
return(GithubReference.FromIssue(null, beforeHash, issue));
}
if (input.Contains("@"))
{
var atSplit = input.Split(new[] { '@' }, 2);
var beforeAt = atSplit[0];
var afterAt = atSplit[1];
if (beforeAt.Contains("/"))
{
var slashSplit = beforeAt.Split(new[] { '/' }, 2);
return(ParseCommitOrBranch(slashSplit[0], slashSplit[1], afterAt));
}
return(ParseCommitOrBranch(null, beforeAt, afterAt));
}
return(ParseCommitOrBranch(null, null, input));
}
private static GithubReference ParseCommitOrBranch(string user, string repo, string commitOrBranch)
{
string[] comparison;
if (TrySplitComparison(commitOrBranch, out comparison) && comparison.Length == 2)
{
return(GithubReference.FromComparison(user, repo, comparison[1], comparison[0]));
}
if (Regex.IsMatch(commitOrBranch, @"^[a-f0-9]{4,40}$"))
{
return(GithubReference.FromCommit(user, repo, commitOrBranch));
}
return(GithubReference.FromBranch(user, repo, commitOrBranch));
}
