add generate models preview

cli/modules/util.py

@@ -3,6 +3,7 @@
 generic helper methods
 """
 
+import string
 import logging
 
 log_format = '%(asctime)s %(levelname)s: %(message)s'
@@ -19,6 +20,14 @@ def set_logfile(logfile):
     log.info({ 'log file': logfile })
 
 
+def safestring(text: str):
+    lines = []
+    for line in text.splitlines():
+        lines.append(line.translate(str.maketrans('', '', string.punctuation)).strip())
+    res = ', '.join(lines)
+    return res[:1000]
+
+
 class Map(dict):
     def __init__(self, *args, **kwargs):
         super(Map, self).__init__(*args, **kwargs)