[poky] [PATCH 1/3] bb.fetch2: add git unpack

[Yu Ke]

From: Yu Ke <ke.yu at intel.com>

git download will clone git repo to local, so git unpack can be simplified
to only checkouting the code to the work dir. For fullclone case, we also
need to manually copy all the ref info, which is needed by the later do_kernel_checkout()

Signed-off-by: Yu Ke <ke.yu at intel.com>
---
 bitbake/lib/bb/fetch2/git.py |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/bitbake/lib/bb/fetch2/git.py b/bitbake/lib/bb/fetch2/git.py
index 08daa20..eadbf33 100644
--- a/bitbake/lib/bb/fetch2/git.py
+++ b/bitbake/lib/bb/fetch2/git.py
@@ -194,6 +194,31 @@ class Git(Fetch):
         os.chdir(ud.clonedir)
         bb.utils.prunedir(codir)
 
+    def unpack(self, ud, destdir, d):
+        """ unpack the downloaded src to destdir"""
+
+        subdir = ud.parm.get("subpath", "")
+        if subdir != "":
+            readpathspec = ":%s" % (subdir)
+        else:
+            readpathspec = ""
+
+        destdir = os.path.join(destdir, "git/")
+        if os.path.exists(destdir):
+            bb.utils.prunedir(destdir)
+
+        if 'fullclone' in ud.parm:
+            runfetchcmd("git clone -l -n %s %s" % (ud.clonedir, destdir), d)
+            if os.path.exists("%s/.git/refs/remotes/origin" % ud.clonedir):
+                runfetchcmd("cp -af %s/.git/refs/remotes/origin/* %s/.git/refs/remotes/origin/" %(ud.clonedir, destdir), d)
+            if os.path.exists("%s/.git/packed-refs" % ud.clonedir):
+                runfetchcmd("cp -af %s/.git/packed-refs %s/.git/" %(ud.clonedir, destdir), d)
+        else:
+            os.chdir(ud.clonedir)
+            runfetchcmd("%s read-tree %s%s" % (ud.basecmd, ud.tag, readpathspec), d)
+            runfetchcmd("%s checkout-index -q -f --prefix=%s -a" % (ud.basecmd, destdir), d)
+        return True
+
     def supports_srcrev(self):
         return True
 
-- 
1.7.0.4