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#!/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()
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