FortinetConfigParser: an object name containing '[' raises ValueError: Input line is malformed. #908

Environment

• Python version: 3.12.13
• netutils version: 1.19.1

Expected Behavior

An object name containing [ parses like any other.

Observed Behavior

ValueError: Input line is malformed., and the whole config is lost.

_parse_out_offending() replaces a config system replacemsg buffer with a ["<name>"] placeholder, and _build_nested_config() restores it:

if "[" in line:
    updated_line = self.uncommon_data.get(line.split('"')[1], None)
    if not updated_line:
        raise ValueError("Input line is malformed.")
    line = updated_line

The guard is "[" in line alone, so any bracketed line is taken for a placeholder and a lookup miss raises. _build_nested_config() receives the first indented line of a top-level block, so only a bracket there triggers it; one deeper in the block is consumed by the method's own loop. A bracketed line with no quotes raises IndexError from line.split('"')[1] before reaching the lookup.

Steps to Reproduce

1. pip install netutils==1.19.1

2. Run:

   from netutils.config.parser import FortinetConfigParser
   FortinetConfigParser('config firewall address\n    edit "obj[1]"\n        set subnet 10.0.0.0 255.0.0.0\n    next\nend\n')
   # ValueError: Input line is malformed.
   

The same config with edit "obj1" parses.

Possible fix

Take the branch only when the key is one _get_uncommon_lines() produced:

if "[" in line:
    parts = line.split('"')
    if len(parts) > 2 and parts[1] in self.uncommon_data:
        line = self.uncommon_data[parts[1]]

Happy to PR against develop.