Coverage for pydaconf/utils/interpolation.py: 100.00%

1import re 

2 

3from pydaconf.utils.dict import get_dict_value 

4from pydaconf.utils.exceptions import InterpolationException 

5 

6 

7def has_interpolation_template(value: str) -> bool: 

8 """Check if a string contains placeholders for interpolation.""" 

9 

10 return bool(re.search(r"{{\s*(.*?)\s*}}", value)) 

11 

12def interpolate_template(value: str, data: dict) -> str: 

13 """Replace {{ ... }} placeholders with values from the data dictionary.""" 

14 

15 def replace_match(match: re.Match) -> str: 

16 key_path = match.group(1).strip() # Extract the key path 

17 match_value = get_dict_value(data, str(key_path)) 

18 if match_value is None: 

19 raise InterpolationException(f"Interpolation failed for key '{key_path}'") 

20 

21 return str(match_value) 

22 

23 return re.sub(r"{{\s*(.*?)\s*}}", replace_match, value)