makefile.py (1598B)
1 """ Functions for working with Makefiles 2 """ 3 from pathlib import Path 4 5 6 def parse_rules_mk_file(file, rules_mk=None): 7 """Turn a rules.mk file into a dictionary. 8 9 Args: 10 file: path to the rules.mk file 11 rules_mk: already parsed rules.mk the new file should be merged with 12 13 Returns: 14 a dictionary with the file's content 15 """ 16 if not rules_mk: 17 rules_mk = {} 18 19 file = Path(file) 20 if file.exists(): 21 rules_mk_lines = file.read_text(encoding='utf-8').split("\n") 22 23 for line in rules_mk_lines: 24 # Filter out comments 25 if line.strip().startswith("#"): 26 continue 27 28 # Strip in-line comments 29 if '#' in line: 30 line = line[:line.index('#')].strip() 31 32 if '=' in line: 33 # Append 34 if '+=' in line: 35 key, value = line.split('+=', 1) 36 if key.strip() not in rules_mk: 37 rules_mk[key.strip()] = value.strip() 38 else: 39 rules_mk[key.strip()] += ' ' + value.strip() 40 # Set if absent 41 elif "?=" in line: 42 key, value = line.split('?=', 1) 43 if key.strip() not in rules_mk: 44 rules_mk[key.strip()] = value.strip() 45 else: 46 if ":=" in line: 47 line.replace(":", "") 48 key, value = line.split('=', 1) 49 rules_mk[key.strip()] = value.strip() 50 51 return rules_mk