Generate ODL compliant swagger models from yang

[sdnc/northbound.git] / generic-resource-api / model / yang / scripts / python / yang2props.py

diff --git a/generic-resource-api/model/yang/scripts/python/yang2props.py b/generic-resource-api/model/yang/scripts/python/yang2props.py
new file mode 100755 (executable)
index 0000000..3cd56e4
--- /dev/null
+++ b/generic-resource-api/model/yang/scripts/python/yang2props.py
@@ -0,0 +1,57 @@
+#!/usr/bin/python
+
+import re
+import sys
+
+
+# Convert word from foo-bar to FooBar
+# words begining with a digit will be converted to _digit
+def to_enum(s):
+    if s[0].isdigit():
+        s = "_" + s
+    else:
+        s = s[0].upper() + s[1:]
+    return re.sub(r'(?!^)-([a-zA-Z])', lambda m: m.group(1).upper(), s)
+
+leaf = ""
+val = ""
+li = []
+
+if len(sys.argv) < 3:
+     print('yang2props.py <input yang> <output properties>')
+     sys.exit(2)
+
+with open(sys.argv[1], "r") as ins:
+    for line in ins:
+        # if we see a leaf save the name for later
+        if "leaf " in line:
+            match = re.search(r'leaf (\S+)', line)
+            if match:
+                leaf = match.group(1)
+      
+        # if we see enum convert the value to enum format and see if it changed
+        # if the value is different write a property entry
+        if "enum " in line:
+            match = re.search(r'enum "(\S+)";', line)
+            if match:
+                val = match.group(1)
+                enum = to_enum(val)
+
+                # see if converting to enum changed the string
+                if val != enum:
+                    property = "yang."+leaf+"."+enum+"="+val
+                    if property not in li:
+                        li.append( property)
+
+
+# Open output file
+fo = open(sys.argv[2], "w")
+fo.write("# yang conversion properties \n")
+fo.write("# used to convert Enum back to the original yang value \n")
+fo.write("\n".join(li))
+fo.write("\n")
+
+# Close opend file
+fo.close()
+
+