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""" Functions for working with Makefiles
"""
import os
import glob
import re
import qmk.path
from qmk.errors import NoSuchKeyboardError
def parse_rules_mk(file_path):
""" Parse a rules.mk file
Args:
file_path: path to the rules.mk file
Returns:
a dictionary with the file's content
"""
# regex to match lines uncommented lines and get the data
# group(1) = option's name
# group(2) = operator (eg.: '=', '+=')
# group(3) = value(s)
rules_mk_regex = re.compile(r"^\s*(\w+)\s*([\?\:\+\-]?=)\s*(\S.*?)(?=\s*(\#|$))")
mk_content = qmk.path.unicode_lines(file_path)
parsed_file = dict()
for line in mk_content:
found = rules_mk_regex.search(line)
if found:
parsed_file[found.group(1)] = dict(operator = found.group(2), value = found.group(3))
return parsed_file
def merge_rules_mk_files(base, revision):
""" Merge a keyboard revision's rules.mk file with
the 'base' rules.mk file
Args:
base: the base rules.mk file's content as dictionary
revision: the revision's rules.mk file's content as dictionary
Returns:
a dictionary with the merged content
"""
return {**base, **revision}
def get_rules_mk(keyboard, revision = ""):
""" Get a rules.mk for a keyboard
Args:
keyboard: name of the keyboard
revision: revision of the keyboard
Returns:
a dictionary with the content of the rules.mk file
"""
base_path = os.path.join(os.getcwd(), "keyboards", keyboard) + os.path.sep
rules_mk = dict()
if os.path.exists(base_path + os.path.sep + revision):
rules_mk_path_wildcard = os.path.join(base_path, "**", "rules.mk")
rules_mk_regex = re.compile(r"^" + base_path + "(?:" + revision + os.path.sep + ")?rules.mk")
paths = [path for path in glob.iglob(rules_mk_path_wildcard, recursive = True) if rules_mk_regex.search(path)]
for file_path in paths:
rules_mk[revision if revision in file_path else "base"] = parse_rules_mk(file_path)
else:
raise NoSuchKeyboardError("The requested keyboard and/or revision does not exist.")
# if the base or the revision directory does not contain a rules.mk
if len(rules_mk) == 1:
rules_mk = rules_mk[revision]
# if both directories contain rules.mk files
elif len(rules_mk) == 2:
rules_mk = merge_rules_mk_files(rules_mk["base"], rules_mk[revision])
return rules_mk
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