#!/usr/bin/env python3

'''

script to find and optionally replace param refs in rst files

'''

import re

from argparse import ArgumentParser

parser = ArgumentParser('find and optionally replace parameters')

parser.add_argument("--change", action='store_true', help="change matches to use param markup")

parser.add_argument("files", nargs='+')

args = parser.parse_args()

for f in args.files:

print(f"Processing {f}")

txt = open(f, 'r').read()

matches = re.findall(r'[,.\s][A-Z][A-Z0-9]+_[A-Z_]+[,.\s]', txt)

matches = re.findall(r'[,.\s][A-Z]+_[A-Z_]+[,.\s]', txt)

changed = False

for m in matches:

s = str(m)

param = s.strip()

s2 = f"{s[0]}:ref:`{param}<{param}>`{s[-1]}"

if args.change:

txt = txt.replace(s, s2)

changed = True

print(f"Replaced [{s}] with [{s2}]")

else:

print(f"Found [{s}]")

if changed:

open(f, 'w').write(txt)