Coverage for src / osiris_cli / input_normalizer.py: 0%

1from __future__ import annotations 

2 

3from typing import Optional 

4 

5 

6def normalize_user_input(text: Optional[str]) -> str: 

7 """Normalize user-provided input for consistent rendering and history.""" 

8 if text is None: 

9 return "" 

10 

11 lines = text.splitlines(keepends=True) 

12 normalized_lines: list[str] = [] 

13 

14 for line in lines: 

15 has_newline = line.endswith('\n') or line.endswith('\r') 

16 stripped = line.rstrip('\r\n') 

17 expanded = stripped.replace('\t', ' ' * 4) 

18 trimmed = expanded.rstrip() 

19 if has_newline: 

20 normalized_lines.append(trimmed + '\n') 

21 else: 

22 normalized_lines.append(trimmed) 

23 

24 # Preserve trailing newline at end if original text ended with newline 

25 if text.endswith('\n') and normalized_lines and not normalized_lines[-1].endswith('\n'): 

26 normalized_lines[-1] += '\n' 

27 

28 return ''.join(normalized_lines)