1 # SPDX-License-Identifier: GPL-2.0
2 #
3 # Builds a .config from a kunitconfig.
4 #
5 # Copyright (C) 2019, Google LLC.
6 # Author: Felix Guo <felixguoxiuping@gmail.com>
7 # Author: Brendan Higgins <brendanhiggins@googl
8
9 from dataclasses import dataclass
10 import re
11 from typing import Any, Dict, Iterable, List,
12
13 CONFIG_IS_NOT_SET_PATTERN = r'^# CONFIG_(\w+)
14 CONFIG_PATTERN = r'^CONFIG_(\w+)=(\S+|".*")$'
15
16 @dataclass(frozen=True)
17 class KconfigEntry:
18 name: str
19 value: str
20
21 def __str__(self) -> str:
22 if self.value == 'n':
23 return f'# CONFIG_{sel
24 return f'CONFIG_{self.name}={s
25
26
27 class KconfigParseError(Exception):
28 """Error parsing Kconfig defconfig or
29
30
31 class Kconfig:
32 """Represents defconfig or .config spe
33
34 def __init__(self) -> None:
35 self._entries = {} # type: Di
36
37 def __eq__(self, other: Any) -> bool:
38 if not isinstance(other, self.
39 return False
40 return self._entries == other.
41
42 def __repr__(self) -> str:
43 return ','.join(str(e) for e i
44
45 def as_entries(self) -> Iterable[Kconf
46 for name, value in self._entri
47 yield KconfigEntry(nam
48
49 def add_entry(self, name: str, value:
50 self._entries[name] = value
51
52 def is_subset_of(self, other: 'Kconfig
53 for name, value in self._entri
54 b = other._entries.get
55 if b is None:
56 if value == 'n
57 contin
58 return False
59 if value != b:
60 return False
61 return True
62
63 def conflicting_options(self, other: '
64 diff = [] # type: List[Tuple[
65 for name, value in self._entri
66 b = other._entries.get
67 if b and value != b:
68 pair = (Kconfi
69 diff.append(pa
70 return diff
71
72 def merge_in_entries(self, other: 'Kco
73 for name, value in other._entr
74 self._entries[name] =
75
76 def write_to_file(self, path: str) ->
77 with open(path, 'a+') as f:
78 for e in self.as_entri
79 f.write(str(e)
80
81 def parse_file(path: str) -> Kconfig:
82 with open(path, 'r') as f:
83 return parse_from_string(f.rea
84
85 def parse_from_string(blob: str) -> Kconfig:
86 """Parses a string containing Kconfig
87 kconfig = Kconfig()
88 is_not_set_matcher = re.compile(CONFIG
89 config_matcher = re.compile(CONFIG_PAT
90 for line in blob.split('\n'):
91 line = line.strip()
92 if not line:
93 continue
94
95 match = config_matcher.match(l
96 if match:
97 kconfig.add_entry(matc
98 continue
99
100 empty_match = is_not_set_match
101 if empty_match:
102 kconfig.add_entry(empt
103 continue
104
105 if line[0] == '#':
106 continue
107 raise KconfigParseError('Faile
108 return kconfig
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