[gnome-continuous-yocto/gnomeostree-3.28-rocko: 2004/8267] bitbake: git: Allow local repos to use HEAD

[Emmanuele Bassi <ebassi src gnome org>]

commit c04468d113ffe2e2c03f5305da59aef93a891e90
Author: Richard Purdie <richard purdie linuxfoundation org>
Date:   Thu Aug 18 19:12:01 2016 +0300

    bitbake: git: Allow local repos to use HEAD
    
    Introduce a new 'usehead' url parameter for git repositories. Specifying
    usehead=1 causes bitbake to use whatever commit the repository HEAD is
    pointing to. Usage of usehead=1 is only allowed for local git
    repositories, i.e. it must always be accompanied with protocol=file url
    parameter.
    
    [YOCTO #9351]
    
    (Bitbake rev: 2673fac5a9d06de937101e3fb2ddf1e60ff99abf)
    
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>
    Signed-off-by: Markus Lehtonen <markus lehtonen linux intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 bitbake/lib/bb/fetch2/git.py |   16 +++++++++++++++-
 1 files changed, 15 insertions(+), 1 deletions(-)
---
diff --git a/bitbake/lib/bb/fetch2/git.py b/bitbake/lib/bb/fetch2/git.py
index 4e2dcec..fd8f3fd 100644
--- a/bitbake/lib/bb/fetch2/git.py
+++ b/bitbake/lib/bb/fetch2/git.py
@@ -49,6 +49,10 @@ Supported SRC_URI options are:
    referring to commit which is valid in tag instead of branch.
    The default is "0", set nobranch=1 if needed.
 
+- usehead
+   For local git:// urls to use the current branch HEAD as the revsion for use with
+   AUTOREV. Implies nobranch.
+
 """
 
 #Copyright (C) 2005 Richard Purdie
@@ -153,6 +157,13 @@ class Git(FetchMethod):
 
         ud.nobranch = ud.parm.get("nobranch","0") == "1"
 
+        # usehead implies nobranch
+        ud.usehead = ud.parm.get("usehead","0") == "1"
+        if ud.usehead:
+            if ud.proto != "file":
+                 raise bb.fetch2.ParameterError("The usehead option is only for use with local 
('protocol=file') git repositories", ud.url)
+            ud.nobranch = 1
+
         # bareclone implies nocheckout
         ud.bareclone = ud.parm.get("bareclone","0") == "1"
         if ud.bareclone:
@@ -168,6 +179,9 @@ class Git(FetchMethod):
             ud.branches[name] = branch
             ud.unresolvedrev[name] = branch
 
+        if ud.usehead:
+            ud.unresolvedrev['default'] = 'HEAD'
+
         ud.basecmd = data.getVar("FETCHCMD_git", d, True) or "git -c core.fsyncobjectfiles=0"
 
         ud.write_tarballs = ((data.getVar("BB_GENERATE_MIRROR_TARBALLS", d, True) or "0") != "0") or 
ud.rebaseable
@@ -387,7 +401,7 @@ class Git(FetchMethod):
         """
         output = self._lsremote(ud, d, "")
         # Tags of the form ^{} may not work, need to fallback to other form
-        if ud.unresolvedrev[name][:5] == "refs/":
+        if ud.unresolvedrev[name][:5] == "refs/" or ud.usehead:
             head = ud.unresolvedrev[name]
             tag = ud.unresolvedrev[name]
         else: