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51 lines
1.5 KiB
51 lines
1.5 KiB
""" Functions for working with Makefiles
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"""
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from pathlib import Path
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def parse_rules_mk_file(file, rules_mk=None):
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"""Turn a rules.mk file into a dictionary.
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Args:
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file: path to the rules.mk file
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rules_mk: already parsed rules.mk the new file should be merged with
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Returns:
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a dictionary with the file's content
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"""
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if not rules_mk:
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rules_mk = {}
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file = Path(file)
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if file.exists():
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rules_mk_lines = file.read_text().split("\n")
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for line in rules_mk_lines:
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# Filter out comments
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if line.strip().startswith("#"):
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continue
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# Strip in-line comments
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if '#' in line:
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line = line[:line.index('#')].strip()
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if '=' in line:
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# Append
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if '+=' in line:
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key, value = line.split('+=', 1)
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if key.strip() not in rules_mk:
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rules_mk[key.strip()] = value.strip()
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else:
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rules_mk[key.strip()] += ' ' + value.strip()
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# Set if absent
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elif "?=" in line:
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key, value = line.split('?=', 1)
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if key.strip() not in rules_mk:
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rules_mk[key.strip()] = value.strip()
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else:
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if ":=" in line:
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line.replace(":", "")
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key, value = line.split('=', 1)
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rules_mk[key.strip()] = value.strip()
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return rules_mk
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