[OE-core] [RFC] sanity.bbclass: support wildcards in SANITY_TESTED_DISTROS

[Olof Johansson]

With this change, you can use wildcards for entries in
SANITY_TESTED_DISTROS. This makes it possible to say that, e.g. "all
Debian 7 Wheezy releases are supported" with the entry "Debian-7.*".

[YOCTO #5265]

Signed-off-by: Olof Johansson <olof.johansson at axis.com>
---
 meta/classes/sanity.bbclass | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/meta/classes/sanity.bbclass b/meta/classes/sanity.bbclass
index bae010d..59f663b 100644
--- a/meta/classes/sanity.bbclass
+++ b/meta/classes/sanity.bbclass
@@ -245,6 +245,15 @@ def check_connectivity(d):
 
     return retval
 
+def _distro_match_glob(distro, supported):
+    if not '*' in supported:
+        return distro == supported
+
+    bb.debug(2, "Glob matching found for %s. Trying to match against %s" % (
+        supported, distro))
+    prefix, sufix = supported.split('*', 1)
+    return distro.startswith(prefix) and distro.endswith(sufix)
+
 def check_supported_distro(sanity_data):
     tested_distros = sanity_data.getVar('SANITY_TESTED_DISTROS', True)
     if not tested_distros:
@@ -255,12 +264,15 @@ def check_supported_distro(sanity_data):
     except Exception:
         distro = None
 
-    if distro:
-        if distro not in [x.strip() for x in tested_distros.split('\\n')]:
-            bb.warn('Host distribution "%s" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.' % distro)
-    else:
+    if not distro:
         bb.warn('Host distribution could not be determined; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.')
 
+    for supported in [x.strip() for x in tested_distros.split('\\n')]:
+        if _distro_match_glob(distro, supported):
+            return
+
+    bb.warn('Host distribution "%s" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.' % distro)
+
 # Checks we should only make if MACHINE is set correctly
 def check_sanity_validmachine(sanity_data):
     messages = ""
-- 
1.8.5.3