source: mainline/tools/config.py@ 43a10c4

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 43a10c4 was 43a10c4, checked in by Martin Decky <martin@…>, 16 years ago

better compatibility with older versions of Python
  • Property mode set to 100755
File size: 8.8 KB
Line 
1#!/usr/bin/env python
2#
3# Copyright (c) 2006 Ondrej Palkovsky
4# Copyright (c) 2009 Martin Decky
5# All rights reserved.
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions
9# are met:
10#
11# - Redistributions of source code must retain the above copyright
12# notice, this list of conditions and the following disclaimer.
13# - Redistributions in binary form must reproduce the above copyright
14# notice, this list of conditions and the following disclaimer in the
15# documentation and/or other materials provided with the distribution.
16# - The name of the author may not be used to endorse or promote products
17# derived from this software without specific prior written permission.
18#
19# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29#
30"""
31HelenOS configuration system
32"""
33import sys
34import os
35import re
36import commands
37import xtui
38
39INPUT = sys.argv[1]
40OUTPUT = 'Makefile.config'
41
42def read_defaults(fname, defaults):
43 "Read saved values from last configuration run"
44
45 inf = file(fname,'r')
46
47 for line in inf:
48 res = re.match(r'^(?:#!# )?([^#]\w*)\s*=\s*(.*?)\s*$', line)
49 if (res):
50 defaults[res.group(1)] = res.group(2)
51
52 inf.close()
53
54def check_condition(text, defaults, ask_names):
55 "Check for condition"
56
57 ctype = 'cnf'
58
59 if ((')|' in text) or ('|(' in text)):
60 ctype = 'dnf'
61
62 if (ctype == 'cnf'):
63 conds = text.split('&')
64 else:
65 conds = text.split('|')
66
67 for cond in conds:
68 if (cond.startswith('(')) and (cond.endswith(')')):
69 cond = cond[1:-1]
70
71 inside = check_inside(cond, defaults, ctype)
72
73 if (ctype == 'cnf') and (not inside):
74 return False
75
76 if (ctype == 'dnf') and (inside):
77 return True
78
79 if (ctype == 'cnf'):
80 return True
81 return False
82
83def check_inside(text, defaults, ctype):
84 "Check that the condition specified on input line is True (only CNF is supported)"
85
86 if (ctype == 'cnf'):
87 conds = text.split('|')
88 else:
89 conds = text.split('&')
90
91 for cond in conds:
92 res = re.match(r'^(.*?)(!?=)(.*)$', cond)
93 if (not res):
94 raise RuntimeError("Invalid condition: %s" % cond)
95
96 condname = res.group(1)
97 oper = res.group(2)
98 condval = res.group(3)
99
100 if (not defaults.has_key(condname)):
101 varval = ''
102 else:
103 varval = defaults[condname]
104
105 if (ctype == 'cnf'):
106 if (oper == '=') and (condval == varval):
107 return True
108
109 if (oper == '!=') and (condval != varval):
110 return True
111 else:
112 if (oper == '=') and (condval != varval):
113 return False
114
115 if (oper == '!=') and (condval == varval):
116 return False
117
118 if (ctype == 'cnf'):
119 return False
120
121 return True
122
123def parse_config(fname, ask_names):
124 "Parse configuration file"
125
126 inf = file(fname, 'r')
127
128 name = ''
129 choices = []
130
131 for line in inf:
132
133 if (line.startswith('!')):
134 # Ask a question
135 res = re.search(r'!\s*(?:\[(.*?)\])?\s*([^\s]+)\s*\((.*)\)\s*$', line)
136
137 if (not res):
138 raise RuntimeError("Weird line: %s" % line)
139
140 cond = res.group(1)
141 varname = res.group(2)
142 vartype = res.group(3)
143
144 ask_names.append((varname, vartype, name, choices, cond))
145 name = ''
146 choices = []
147 continue
148
149 if (line.startswith('@')):
150 # Add new line into the 'choices' array
151 res = re.match(r'@\s*(?:\[(.*?)\])?\s*"(.*?)"\s*(.*)$', line)
152
153 if not res:
154 raise RuntimeError("Bad line: %s" % line)
155
156 choices.append((res.group(2), res.group(3)))
157 continue
158
159 if (line.startswith('%')):
160 # Name of the option
161 name = line[1:].strip()
162 continue
163
164 if ((line.startswith('#')) or (line == '\n')):
165 # Comment or empty line
166 continue
167
168
169 raise RuntimeError("Unknown syntax: %s" % line)
170
171 inf.close()
172
173def yes_no(default):
174 "Return '*' if yes, ' ' if no"
175
176 if (default == 'y'):
177 return '*'
178
179 return ' '
180
181def subchoice(screen, name, choices, default):
182 "Return choice of choices"
183
184 maxkey = 0
185 for key, val in choices:
186 length = len(key)
187 if (length > maxkey):
188 maxkey = length
189
190 options = []
191 position = None
192 cnt = 0
193 for key, val in choices:
194 if ((default) and (key == default)):
195 position = cnt
196
197 options.append(" %-*s %s " % (maxkey, key, val))
198 cnt += 1
199
200 (button, value) = xtui.choice_window(screen, name, 'Choose value', options, position)
201
202 if (button == 'cancel'):
203 return None
204
205 return choices[value][0]
206
207def check_choices(defaults, ask_names):
208 "Check whether all accessible variables have a default"
209
210 for varname, vartype, name, choices, cond in ask_names:
211 if ((cond) and (not check_condition(cond, defaults, ask_names))):
212 continue
213
214 if (not defaults.has_key(varname)):
215 return False
216
217 return True
218
219def create_output(fname, defaults, ask_names):
220 "Create output configuration"
221
222 outf = file(fname, 'w')
223
224 outf.write('#########################################\n')
225 outf.write('## AUTO-GENERATED FILE, DO NOT EDIT!!! ##\n')
226 outf.write('#########################################\n\n')
227
228 for varname, vartype, name, choices, cond in ask_names:
229 if ((cond) and (not check_condition(cond, defaults, ask_names))):
230 continue
231
232 if (not defaults.has_key(varname)):
233 default = ''
234 else:
235 default = defaults[varname]
236
237 outf.write('# %s\n%s = %s\n\n' % (name, varname, default))
238
239 outf.write('REVISION = %s\n' % commands.getoutput('svnversion . 2> /dev/null'))
240 outf.write('TIMESTAMP = %s\n' % commands.getoutput('date "+%Y-%m-%d %H:%M:%S"'))
241 outf.close()
242
243def main():
244 defaults = {}
245 ask_names = []
246
247 # Parse configuration file
248 parse_config(INPUT, ask_names)
249
250 # Read defaults from previous run
251 if os.path.exists(OUTPUT):
252 read_defaults(OUTPUT, defaults)
253
254 # Default mode: only check defaults and regenerate configuration
255 if ((len(sys.argv) >= 3) and (sys.argv[2] == 'default')):
256 if (check_choices(defaults, ask_names)):
257 create_output(OUTPUT, defaults, ask_names)
258 return 0
259
260 # Check mode: only check defaults
261 if ((len(sys.argv) >= 3) and (sys.argv[2] == 'check')):
262 if (check_choices(defaults, ask_names)):
263 return 0
264 return 1
265
266 screen = xtui.screen_init()
267 try:
268 selname = None
269 while True:
270
271 options = []
272 opt2row = {}
273 position = None
274 cnt = 0
275 for varname, vartype, name, choices, cond in ask_names:
276
277 if ((cond) and (not check_condition(cond, defaults, ask_names))):
278 continue
279
280 if (varname == selname):
281 position = cnt
282
283 if (not defaults.has_key(varname)):
284 default = None
285 else:
286 default = defaults[varname]
287
288 if (vartype == 'choice'):
289 # Check if the default is an acceptable value
290 if ((default) and (not default in [choice[0] for choice in choices])):
291 default = None
292 defaults.pop(varname)
293
294 # If there is just one option, use it
295 if (len(choices) == 1):
296 default = choices[0][0]
297 defaults[varname] = default
298
299 options.append(" %s [%s] --> " % (name, default))
300 elif (vartype == 'y/n'):
301 if (default == None):
302 default = 'y'
303 defaults[varname] = default
304 options.append(" <%s> %s " % (yes_no(default), name))
305 elif (vartype == 'n/y'):
306 if (default == None):
307 default = 'n'
308 defaults[varname] = default
309 options.append(" <%s> %s " % (yes_no(default), name))
310 else:
311 raise RuntimeError("Unknown variable type: %s" % vartype)
312
313 opt2row[cnt] = (varname, vartype, name, choices)
314
315 cnt += 1
316
317 (button, value) = xtui.choice_window(screen, 'HelenOS configuration', 'Choose configuration option', options, position)
318
319 if (button == 'cancel'):
320 return 'Configuration canceled'
321
322 if (not opt2row.has_key(value)):
323 raise RuntimeError("Error selecting value: %s" % value)
324
325 (selname, seltype, name, choices) = opt2row[value]
326
327 if (not defaults.has_key(selname)):
328 default = None
329 else:
330 default = defaults[selname]
331
332 if (button == 'done'):
333 if (check_choices(defaults, ask_names)):
334 break
335 else:
336 xtui.error_dialog(screen, 'Error', 'Some options have still undefined values.')
337 continue
338
339 if (seltype == 'choice'):
340 defaults[selname] = subchoice(screen, name, choices, default)
341 elif ((seltype == 'y/n') or (seltype == 'n/y')):
342 if (defaults[selname] == 'y'):
343 defaults[selname] = 'n'
344 else:
345 defaults[selname] = 'y'
346 finally:
347 xtui.screen_done(screen)
348
349 create_output(OUTPUT, defaults, ask_names)
350 return 0
351
352if __name__ == '__main__':
353 sys.exit(main())
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