[2.18][PATCH 1/5] fetch2/git.py: add filter_regex parameter to latest_versionstring

[<daniel.turull@ericsson.com>]

From: Chen Qi <Qi.Chen@windriver.com>

We want to be able to do stable version upgrade for recipes. For
example, 1.0.0 -> 1.0.1 instead of 1.0.0 -> 1.1.0.

To to this, we need an extra paramter to latest_versionstring
so that we are able to filter out the versions we need. Using regex
has the advantage of adapting to different version schemes.

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 51842f8bc83203ff19e202361d2bb66e0c9f6381)
Signed-off-by: Daniel Turull <daniel.turull@ericsson.com>
---
 lib/bb/fetch2/git.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/bb/fetch2/git.py b/lib/bb/fetch2/git.py
index 5134ec04c..0649429e5 100644
--- a/lib/bb/fetch2/git.py
+++ b/lib/bb/fetch2/git.py
@@ -975,7 +975,7 @@ class Git(FetchMethod):
         raise bb.fetch2.FetchError("Unable to resolve '%s' in upstream git repository in git ls-remote output for %s" % \
             (ud.unresolvedrev, ud.host+ud.path))
 
-    def latest_versionstring(self, ud, d):
+    def latest_versionstring(self, ud, d, filter_regex=None):
         """
         Compute the latest release name like "x.y.x" in "x.y.x+gitHASH"
         by searching through the tags output of ls-remote, comparing
@@ -1015,6 +1015,10 @@ class Git(FetchMethod):
 
             pver = m.group('pver').replace("_", ".")
 
+            if filter_regex:
+                if not re.match(filter_regex, pver):
+                    continue
+
             if verstring and bb.utils.vercmp(("0", pver, ""), ("0", verstring, "")) < 0:
                 continue