From 7b9eac6c25cd49a5c8923cd972fdd467ca83abe2 Mon Sep 17 00:00:00 2001
From: Scott Williams <tocsoft@gmail.com>
Date: Thu, 29 Dec 2016 22:00:03 +0000
Subject: [PATCH] guess branch name in appveyor

---
 build/Program.cs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/build/Program.cs b/build/Program.cs
index 95e91cecdc..75fc8974ee 100644
--- a/build/Program.cs
+++ b/build/Program.cs
@@ -71,6 +71,23 @@ namespace ConsoleApplication
 
                 // lets build version friendly commit
                 string branch = repo.Head.FriendlyName;
+
+                // lets see if we are running in appveyor
+                var appveryorBranch = Environment.GetEnvironmentVariable("APPVEYOR_REPO_BRANCH");
+                if (!string.IsNullOrWhiteSpace(appveryorBranch))
+                {
+                    branch = appveryorBranch;
+                }
+
+                var prNumber = Environment.GetEnvironmentVariable("APPVEYOR_PULL_REQUEST_NUMBER");
+                if (!string.IsNullOrWhiteSpace(prNumber))
+                {
+                    branch = "PR" + prNumber;
+                }
+                if(branch == "(no branch)")
+                {
+                    throw new Exception("unable to find branch");
+                }
                 branch = branch.Replace("/", "-").Replace("--", "-");
                 if (branch == "master")
                 {