[2.18][PATCH 3/5] fetch2/crate.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 592477f225868e227110477f52691e031903430a)
Signed-off-by: Daniel Turull <daniel.turull@ericsson.com>
---
 lib/bb/fetch2/crate.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/bb/fetch2/crate.py b/lib/bb/fetch2/crate.py
index eb1fd5719..6133d3756 100644
--- a/lib/bb/fetch2/crate.py
+++ b/lib/bb/fetch2/crate.py
@@ -13,6 +13,7 @@ BitBake 'Fetch' implementation for crates.io
 import hashlib
 import json
 import os
+import re
 import subprocess
 import bb
 from   bb.fetch2 import logger, subprocess_setup, UnpackError
@@ -155,18 +156,20 @@ class Crate(Wget):
             with open(mdpath, "w") as f:
                 json.dump(metadata, f)
 
-    def latest_versionstring(self, ud, d):
+    def latest_versionstring(self, ud, d, filter_regex=None):
         """
         Return the latest version available when versionsurl is the [name]/versions URL.
         """
         from functools import cmp_to_key
         json_data = json.loads(self._fetch_index(ud.versionsurl, ud, d))
         versions = [(0, i["num"], "") for i in json_data["versions"]]
+        if filter_regex:
+            versions = [v for v in versions if re.match(filter_regex, v[1])]
         versions = sorted(versions, key=cmp_to_key(bb.utils.vercmp))
 
         return (versions[-1][1], "") if versions else ("", "")
 
-    def latest_versionstring_from_index(self, ud, d):
+    def latest_versionstring_from_index(self, ud, d, filter_regex=None):
         """
         Return the latest version available when versionsurl is a Cargo index
         file.
@@ -181,5 +184,8 @@ class Crate(Wget):
             if not data.get("yanked", False):
                 versions.append((0, data["vers"], ""))
 
+        if filter_regex:
+            versions = [v for v in versions if re.match(filter_regex, v[1])]
+
         versions = sorted(versions, key=cmp_to_key(bb.utils.vercmp))
         return (versions[-1][1], "") if versions else ("", "")