1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
# -*- python -*-
# This example reads an lisp-esque syntax configuration
# file to make it easier for non-programmers to use
# Blueshift. It will read a file with the same pathname
# just with ‘.conf’ appended (‘lisp-esque.conf’ in this
# case.) However, if the filename of this file ends with
# with ‘rc’, that part will be removed, for example, if
# you rename this script to ‘~/.blueshiftrc’ it will read
# ‘~/.blueshift.conf’ rather than ‘~/.blueshiftrc.conf’.
# Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Get the name of .conf file
conf = '%s.conf' % (config_file[:-2] if config_file.endswith('rc') else config_file)
# TODO it should be possible to change file
# Read .conf file
with open(conf, 'r') as file:
conf = file.read()
def abort(text, returncode = 1):
'''
Abort the program
@param text:str Error message
@return returncode:int The programs return code
'''
printerr('\033[01;31m%s\033[00m' % text)
sys.exit(returncode)
def parse(code):
'''
Parse the .conf file and return it as a tree
@param code:str The .conf file content to parse
@return :list<↑|str> The root node in the tree
'''
stack, stackptr = [], -1
comment, escape, quote, buf = False, False, None, None
col, char, line = 0, 0, 1
for c in code:
if comment:
if c in '\n\r\f':
comment = False
elif escape:
escape = False
if c == 'a': buf += '\a'
elif c == 'b': buf += chr(8)
elif c == 'e': buf += '\033'
elif c == 'f': buf += '\f'
elif c == 'n': buf += '\n'
elif c == 'r': buf += '\r'
elif c == 't': buf += '\t'
elif c == 'v': buf += chr(11)
elif c == '0': buf += '\0'
else:
buf += c
elif c == quote:
quote = None
elif (c in ';#') and (quote is None):
if buf is not None:
stack[stackptr].append(buf)
buf = None
comment = True
elif (c == '(') and (quote is None):
if buf is not None:
stack[stackptr].append(buf)
buf = None
stackptr += 1
if stackptr == len(stack):
stack.append([])
else:
stack[stackptr] = []
elif (c == ')') and (quote is None):
if buf is not None:
stack[stackptr].append(buf)
buf = None
if stackptr == 0:
return stack[0]
stackptr -= 1
stack[stackptr].append(stack[stackptr + 1])
elif (c in ' \t\n\r\f') and (quote is None):
if buf is not None:
stack[stackptr].append(buf)
buf = None
else:
if buf is None:
buf = ''
if c == '\\':
escape = True
elif (c in '\'\"') and (quote is None):
quote = c
else:
buf += c
if c == '\t':
col |= 7
col += 1
char += 1
if c in '\n\r\f':
line += 1
col = 0
char = 0
abort('premature end of file')
# Parse .conf file
conf = parse(conf)
print(conf)
|
