1 files changed, 56 insertions, 0 deletions
diff --git a/tools/buildsteps/windows/getbranch.bat b/tools/buildsteps/windows/getbranch.bat
new file mode 100644
index 0000000..a078c05
--- /dev/null
+++ b/tools/buildsteps/windows/getbranch.bat
@@ -0,0 +1,56 @@
+@echo off
+rem this gets the current branch from either the branchname (if we attached) or
+rem by using scientific branch fetching algorithms [tm] git is in detached HEAD state
+rem result will be in env var %BRANCH%
+SET BRANCH=
+SET DETACHED=1
+:: detect detached head
+git symbolic-ref HEAD >nul 2>&1
+IF %ERRORLEVEL%==0 (
+  SET DETACHED=0
+)
+rem find the branchname - if current branch is a pr we have to take this into account aswell
+rem (would be refs/heads/pr/number/head then)
+rem normal branch would be refs/heads/branchname
+IF %DETACHED%==0 (
+  FOR /f %%a IN ('git symbolic-ref HEAD') DO SET BRANCH=%%a
+  SETLOCAL EnableDelayedExpansion
+  SET BRANCH=!BRANCH:*/=!
+  SETLOCAL DisableDelayedExpansion
+  GOTO branchfound
+)
+
+:: when building with jenkins there's no branch. First git command gets the branches
+:: and then prefers a non pr branch if one exists
+:: (this mimics what the linux side does via sed and head -n1
+:: but is empty in a normal build environment. Second git command gets the branch there.
+SET command=git branch -r --points-at HEAD
+%command% >nul 2>&1
+IF NOT %ERRORLEVEL%==0 (
+  SET command=git branch -r --contains HEAD
+)
+
+%command% | findstr "%GITHUB_REPO%\/" | findstr /V "%GITHUB_REPO%\/pr\/" >nul
+IF %ERRORLEVEL%==0 (
+  FOR /f %%a IN ('%%command%% ^| findstr "%GITHUB_REPO%\/" ^| findstr /V "%GITHUB_REPO%\/pr\/"') DO (
+      SET BRANCH=%%a
+      GOTO branchfound
+    )
+) ELSE (
+  FOR /f %%a IN ('%%command%% ^| findstr "%GITHUB_REPO%\/"') DO (
+    SET BRANCH=%%a
+    GOTO branchfound
+  )
+)
+
+:branchfound
+SETLOCAL EnableDelayedExpansion
+IF NOT "!BRANCH!"=="" (
+  :: BRANCH is now (head|GITHUB_REPO)/(branchname|pr/number/(head|merge))
+  SET BRANCH=!BRANCH:/pr/=/PR!
+  SET BRANCH=!BRANCH:*/=!
+  SET BRANCH=!BRANCH:/=-!
+)
+SETLOCAL DisableDelayedExpansion
+
+ECHO.%BRANCH%