Factorize the definition of supported extensions

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>

lib.py

@@ -180,3 +180,7 @@ def getDataDir ():
 
 def currentProject ():
     return os.path.basename (os.path.dirname (getDataDir ()))
+
+def hasSupportedExt (filename): 
+    ext = os.path.splitext(filename)[1]
+    return ext in ['.c', '.cc', '.cpp', '.h']

query.py

@@ -104,7 +104,7 @@ def query (cmd, *args):
         path = args[1]
         ext = os.path.splitext(path)[1]
 
-        if ext in ['.c', '.cc', '.cpp', '.h']:
+        if lib.hasSupportedExt (path):
             buffer = BytesIO()
             tokens = scriptLines ('tokenize-file', version, path)
             even = True

update.py

@@ -74,8 +74,7 @@ def updateDefinitions (blobs):
         hash = db.hash.get (blob)
         filename = db.file.get (blob)
 
-        ext = os.path.splitext(filename)[1]
-        if ext not in ['.c', '.cc', '.cpp', '.h']: continue
+        if not lib.hasSupportedExt (filename): continue
 
         lines = scriptLines ('parse-defs', hash, filename)
         for l in lines:
@@ -97,8 +96,7 @@ def updateReferences (blobs):
         hash = db.hash.get (blob)
         filename = db.file.get (blob)
 
-        ext = os.path.splitext(filename)[1]
-        if ext not in ['.c', '.cc', '.cpp', '.h']: continue
+        if not lib.hasSupportedExt (filename): continue
 
         tokens = scriptLines ('tokenize-file', '-b', hash)
         even = True