[bin][runcommand] outsource error hints

bin/util/common.py

@@ -4,6 +4,14 @@ import functools
 import subprocess
 
 
+def getCommandErrorHints(command):
+    if "git " in command:
+        return "It seems that a git command failed. Please check:\n" \
+               "    -- is the module registered as git repository?\n" \
+               "    -- is upstream defined for the branch?"
+    return None
+
+
 # execute a command and retrieve the output
 def runCommand(command, suppressTraceBack=False, errorMessage=''):
     try:
@@ -18,11 +26,9 @@ def runCommand(command, suppressTraceBack=False, errorMessage=''):
             print("-- command: {}".format(command))
             print("-- folder: {}".format(os.getcwd()))
             print("-- error: {}".format(sys.exc_info()[1]))
-            if "git " in command:
-                print()
-                print("It seems that a git command failed. Please check:\n"
-                      "    -- is the module registered as git repository?\n"
-                      "    -- is upstream defined for the branch?\n")
+            hints = getCommandErrorHints(command)
+            if hints is not None:
+                print(hints)
             raise
         else:
             raise Exception(errorMessage)