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1802 decky 1
#!/usr/bin/env python
2830 jermar 2
#
3
# Copyright (c) 2006 Ondrej Palkovsky 
4
# All rights reserved.
5
#
6
# Redistribution and use in source and binary forms, with or without
7
# modification, are permitted provided that the following conditions
8
# are met:
9
#
10
# - Redistributions of source code must retain the above copyright
11
#   notice, this list of conditions and the following disclaimer.
12
# - Redistributions in binary form must reproduce the above copyright
13
#   notice, this list of conditions and the following disclaimer in the
14
#   documentation and/or other materials provided with the distribution.
15
# - The name of the author may not be used to endorse or promote products
16
#   derived from this software without specific prior written permission.
17
#
18
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
#
1802 decky 29
"""
30
HelenOS configuration script
31
"""
32
import sys
33
import os
34
import re
35
import commands
36
 
37
INPUT = sys.argv[1]
38
OUTPUT = 'Makefile.config'
39
TMPOUTPUT = 'Makefile.config.tmp'
40
 
41
class DefaultDialog:
42
    "Wrapper dialog that tries to return default values"
43
    def __init__(self, dlg):
44
        self.dlg = dlg
45
 
46
    def set_title(self,text):
47
        self.dlg.set_title(text)
48
 
49
    def yesno(self, text, default=None):
50
        if default is not None:
51
            return default
52
        return self.dlg.yesno(text, default)
53
    def noyes(self, text, default=None):
54
        if default is not None:
55
            return default
56
        return self.dlg.noyes(text, default)
57
 
58
    def choice(self, text, choices, defopt=None):
59
        if defopt is not None:
60
            return choices[defopt][0]
61
        return self.dlg.choice(text, choices, defopt)
62
 
63
class NoDialog:
64
    def __init__(self):
65
        self.printed = None
66
        self.title = 'HelenOS Configuration'
67
 
68
    def print_title(self):
69
        if not self.printed:
70
            sys.stdout.write("\n*** %s ***\n" % self.title)
71
            self.printed = True
72
 
73
    def set_title(self, text):
74
        self.title = text
75
        self.printed = False
76
 
77
    def noyes(self, text, default=None):
78
        if not default:
79
            default = 'n'
80
        return self.yesno(text, default)
81
 
82
    def yesno(self, text, default=None):
83
        self.print_title()
84
 
85
        if default != 'n':
86
            default = 'y'
87
        while 1:
88
            sys.stdout.write("%s (y/n)[%s]: " % (text,default))
89
            inp = sys.stdin.readline()
90
            if not inp:
91
                raise EOFError
92
            inp = inp.strip().lower()
93
            if not inp:
94
                return default
95
            if inp == 'y':
96
                return 'y'
97
            elif inp == 'n':
98
                return 'n'
99
 
100
    def _print_choice(self, text, choices, defopt):
101
        sys.stdout.write('%s:\n' % text)
102
        for i,(text,descr) in enumerate(choices):
2585 cejka 103
            if descr is '':
104
                sys.stdout.write('\t%2d. %s\n' % (i, text))
105
            else:
106
                sys.stdout.write('\t%2d. %s\n' % (i, descr))
1802 decky 107
        if defopt is not None:
108
            sys.stdout.write('Enter choice number[%d]: ' % defopt)
109
        else:
110
            sys.stdout.write('Enter choice number: ')
111
 
112
    def menu(self, text, choices, button, defopt=None):
113
        self.title = 'Main menu'
114
        menu = []
115
        for key, descr in choices:
116
            txt = key + (45-len(key))*' ' + ': ' + descr
117
            menu.append((key, txt))
118
 
119
        return self.choice(text, [button] + menu)
120
 
121
    def choice(self, text, choices, defopt=None):
122
        self.print_title()
123
        while 1:
124
            self._print_choice(text, choices, defopt)
125
            inp = sys.stdin.readline()
126
            if not inp:
127
                raise EOFError
128
            if not inp.strip():
129
                if defopt is not None:
130
                    return choices[defopt][0]
131
                continue
132
            try:
133
                number = int(inp.strip())
134
            except ValueError:
135
                continue
136
            if number < 0 or number >= len(choices):
137
                continue
138
            return choices[number][0]
139
 
140
 
141
def eof_checker(fnc):
142
    def wrapper(self, *args, **kw):
143
        try:
144
            return fnc(self, *args, **kw)
145
        except EOFError:
146
            return getattr(self.bckdialog,fnc.func_name)(*args, **kw)
147
    return wrapper
148
 
149
class Dialog(NoDialog):
150
    def __init__(self):
151
        NoDialog.__init__(self)
152
        self.dlgcmd = os.environ.get('DIALOG','dialog')
153
        self.title = ''
154
        self.backtitle = 'HelenOS Configuration'
155
 
156
        if os.system('%s --print-maxsize >/dev/null 2>&1' % self.dlgcmd) != 0:
157
            raise NotImplementedError
158
 
159
        self.bckdialog = NoDialog()
160
 
161
    def set_title(self,text):
162
        self.title = text
163
        self.bckdialog.set_title(text)
164
 
165
    def calldlg(self,*args,**kw):
166
        "Wrapper for calling 'dialog' program"
167
        indesc, outdesc = os.pipe()
168
        pid = os.fork()
169
        if not pid:
170
            os.close(2)
171
            os.dup(outdesc)
172
            os.close(indesc)
173
 
174
            dlgargs = [self.dlgcmd,'--title',self.title,
175
                       '--backtitle', self.backtitle]
176
            for key,val in kw.items():
177
                dlgargs.append('--'+key)
178
                dlgargs.append(val)
179
            dlgargs += args            
180
            os.execlp(self.dlgcmd,*dlgargs)
181
 
182
        os.close(outdesc)
183
 
184
        try:
185
            errout = os.fdopen(indesc,'r')
186
            data = errout.read()
187
            errout.close()
188
            pid,status = os.wait()
189
        except:
190
            os.system('reset') # Reset terminal
191
            raise
192
 
193
        if not os.WIFEXITED(status):
194
            os.system('reset') # Reset terminal
195
            raise EOFError
196
 
197
        status = os.WEXITSTATUS(status)
198
        if status == 255:
199
            raise EOFError
200
        return status,data
201
 
202
    def yesno(self, text, default=None):
203
        if text[-1] not in ('?',':'):
204
            text = text + ':'
205
        width = '50'
206
        height = '5'
207
        if len(text) < 48:
208
            text = ' '*int(((48-len(text))/2)) + text
209
        else:
210
            width = '0'
211
            height = '0'
212
        if default == 'n':
213
            res,data = self.calldlg('--defaultno','--yesno',text,height,width)
214
        else:
215
            res,data = self.calldlg('--yesno',text,height,width)
216
 
217
        if res == 0:
218
            return 'y'
219
        return 'n'
220
    yesno = eof_checker(yesno)
221
 
222
    def menu(self, text, choices, button, defopt=None):
223
        self.title = 'Main menu'
224
        text = text + ':'
225
        width = '70'
226
        height = str(8 + len(choices))
227
        args = []
228
        for key,val in choices:
229
            args.append(key)
230
            args.append(val)
231
 
232
        kw = {}
233
        if defopt:
234
            kw['default-item'] = choices[defopt][0]
235
        res,data = self.calldlg('--ok-label','Change',
236
                                '--extra-label',button[1],
237
                                '--extra-button',
238
                                '--menu',text,height,width,
239
                                str(len(choices)),*args,**kw)
240
        if res == 3:
241
            return button[0]
242
        if res == 1: # Cancel
243
            sys.exit(1)
244
        elif res:
245
            print data
246
            raise EOFError
247
        return data
248
    menu = eof_checker(menu)
249
 
250
    def choice(self, text, choices, defopt=None):
251
        text = text + ':'
252
        width = '50'
253
        height = str(8 + len(choices))
254
        args = []
255
        for key,val in choices:
256
            args.append(key)
257
            args.append(val)
258
 
259
        kw = {}
260
        if defopt:
261
            kw['default-item'] = choices[defopt][0]
262
        res,data = self.calldlg('--nocancel','--menu',text,height,width,
263
                                str(len(choices)),*args, **kw)
264
        if res:
265
            print data
266
            raise EOFError
267
        return data
268
    choice = eof_checker(choice)
269
 
270
def read_defaults(fname,defaults):
271
    "Read saved values from last configuration run"
272
    f = file(fname,'r')
273
    for line in f:
274
        res = re.match(r'^(?:#!# )?([^#]\w*)\s*=\s*(.*?)\s*$', line)
275
        if res:
276
            defaults[res.group(1)] = res.group(2)
277
    f.close()
278
 
279
def check_condition(text, defaults, asked_names):
280
    seen_vars = [ x[0] for x in asked_names ]
281
    ctype = 'cnf'
282
    if ')|' in text or '|(' in text:
283
        ctype = 'dnf'
284
 
285
    if ctype == 'cnf':
286
        conds = text.split('&')
287
    else:
288
        conds = text.split('|')
289
 
290
    for cond in conds:
291
        if cond.startswith('(') and cond.endswith(')'):
292
            cond = cond[1:-1]
293
 
294
        inside = check_inside(cond, defaults, ctype, seen_vars)
295
 
296
        if ctype == 'cnf' and not inside:
297
            return False
298
        if ctype == 'dnf' and inside:
299
            return True
300
 
301
    if ctype == 'cnf':
302
        return True
303
    return False
304
 
305
def check_inside(text, defaults, ctype, seen_vars):
306
    """
307
    Check that the condition specified on input line is True
308
 
309
    only CNF is supported
310
    """
311
    if ctype == 'cnf':
312
        conds = text.split('|')
313
    else:
314
        conds = text.split('&')
315
    for cond in conds:
316
        res = re.match(r'^(.*?)(!?=)(.*)$', cond)
317
        if not res:
318
            raise RuntimeError("Invalid condition: %s" % cond)
319
        condname = res.group(1)
320
        oper = res.group(2)
321
        condval = res.group(3)
322
        if condname not in seen_vars:
323
            varval = ''
324
##             raise RuntimeError("Variable %s not defined before being asked." %\
325
##                                condname)
326
        elif not defaults.has_key(condname):
327
            raise RuntimeError("Condition var %s does not exist: %s" % \
328
                               (condname,text))
329
        else:
330
            varval = defaults[condname]
331
        if ctype == 'cnf':
332
            if oper == '=' and  condval == varval:
333
                return True
334
            if oper == '!=' and condval != varval:
335
                return True
336
        else:
337
            if oper== '=' and condval != varval:
338
                return False
339
            if oper== '!=' and condval == varval:
340
                return False
341
    if ctype=='cnf':
342
        return False
343
    return True
344
 
345
def parse_config(input, output, dlg, defaults={}, askonly=None):
346
    "Parse configuration file and create Makefile.config on the fly"
347
    def ask_the_question(dialog):
348
        "Ask question based on the type of variables to ask"
349
        # This is quite a hack, this thingy is written just to
350
        # have access to local variables..
351
        if vartype == 'y/n':
352
            return dialog.yesno(comment, default)
353
        elif vartype == 'n/y':
354
            return dialog.noyes(comment, default)
355
        elif vartype == 'choice':
356
            defopt = None
357
            if default is not None:
358
                for i,(key,val) in enumerate(choices):
359
                    if key == default:
360
                        defopt = i
361
                        break
362
            return dialog.choice(comment, choices, defopt)
363
        else:
364
            raise RuntimeError("Bad method: %s" % vartype)
365
 
366
 
367
    f = file(input, 'r')
368
    outf = file(output, 'w')
369
 
370
    outf.write('#########################################\n')
371
    outf.write('## AUTO-GENERATED FILE, DO NOT EDIT!!! ##\n')
372
    outf.write('#########################################\n\n')
373
 
374
    asked_names = []
375
 
376
    comment = ''
377
    default = None
378
    choices = []
379
    for line in f:
380
        if line.startswith('%'):
381
            res = re.match(r'^%\s*(?:\[(.*?)\])?\s*(.*)$', line)
382
            if not res:
383
                raise RuntimeError('Invalid command: %s' % line)
384
            if res.group(1):
385
                if not check_condition(res.group(1), defaults,
386
                                       asked_names):
387
                    continue
388
            args = res.group(2).strip().split(' ')
389
            cmd = args[0].lower()
390
            args = args[1:]
391
            if cmd == 'saveas':
392
                outf.write('%s = %s\n' % (args[1],defaults[args[0]]))
393
            elif cmd == 'shellcmd':
394
                varname = args[0]
395
                args = args[1:]
396
                for i,arg in enumerate(args):
397
                    if arg.startswith('$'):
398
                        args[i] = defaults[arg[1:]]
399
                data,status = commands.getstatusoutput(' '.join(args))
400
                if status:
401
                    raise RuntimeError('Error running: %s' % ' '.join(args))
402
                outf.write('%s = %s\n' % (varname,data.strip()))
403
            continue
404
 
405
        if line.startswith('!'):
406
            # Ask a question
407
            res = re.search(r'!\s*(?:\[(.*?)\])?\s*([^\s]+)\s*\((.*)\)\s*$', line)
408
            if not res:
409
                raise RuntimeError("Weird line: %s" % line)
410
            varname = res.group(2)
411
            vartype = res.group(3)
412
 
413
            default = defaults.get(varname,None)
414
 
415
            if res.group(1):
416
                if not check_condition(res.group(1), defaults,
417
                                       asked_names):
418
                    if default is not None:
419
                        outf.write('#!# %s = %s\n' % (varname, default))
420
                    # Clear cumulated values
421
                    comment = ''
422
                    default = None
423
                    choices = []
424
                    continue
425
 
426
            asked_names.append((varname,comment))
427
 
428
            if default is None or not askonly or askonly == varname:
429
                default = ask_the_question(dlg)
430
            else:
431
                default = ask_the_question(DefaultDialog(dlg))
432
 
433
            outf.write('%s = %s\n' % (varname, default))
434
            # Remeber the selected value
435
            defaults[varname] = default
436
            # Clear cumulated values
437
            comment = ''
438
            default = None
439
            choices = []
440
            continue
441
 
442
        if line.startswith('@'):
443
            # Add new line into the 'choice array' 
444
            res = re.match(r'@\s*(?:\[(.*?)\])?\s*"(.*?)"\s*(.*)$', line)
445
            if not res:
446
                raise RuntimeError("Bad line: %s" % line)
447
            if res.group(1):
448
                if not check_condition(res.group(1),defaults,
449
                                       asked_names):
450
                    continue
451
            choices.append((res.group(2), res.group(3)))
452
            continue
453
 
454
        # All other things print to output file
455
        outf.write(line)
456
        if re.match(r'^#[^#]', line):
457
            # Last comment before question will be displayed to the user
458
            comment = line[1:].strip()
459
        elif line.startswith('## '):
460
            # Set title of the dialog window
461
            dlg.set_title(line[2:].strip())
462
 
463
    outf.write('\n')
464
    outf.write('REVISION = %s\n' % commands.getoutput('svnversion . 2> /dev/null'))
465
    outf.write('TIMESTAMP = %s\n' % commands.getoutput('date "+%Y-%m-%d %H:%M:%S"'))
466
    outf.close()
467
    f.close()
468
    return asked_names
469
 
470
def main():
471
    defaults = {}
472
    try:
473
        dlg = Dialog()
474
    except NotImplementedError:
475
        dlg = NoDialog()
476
 
477
    if len(sys.argv) >= 3 and sys.argv[2]=='default':
478
        defmode = True
479
    else:
480
        defmode = False
481
 
482
    # Default run will update the configuration file
483
    # with newest options
484
    if os.path.exists(OUTPUT):
485
        read_defaults(OUTPUT, defaults)
486
 
487
    # Get ARCH from command line if specified
488
    if len(sys.argv) >= 4:
489
        defaults['ARCH'] = sys.argv[3]
1846 decky 490
        defaults['PLATFORM'] = sys.argv[3]
1802 decky 491
 
492
    # Get COMPILER from command line if specified
493
    if len(sys.argv) >= 5:
494
        defaults['COMPILER'] = sys.argv[4]
495
 
496
    # Get CONFIG_DEBUG from command line if specified
497
    if len(sys.argv) >= 6:
498
        defaults['CONFIG_DEBUG'] = sys.argv[5]
499
 
500
    # Get MACHINE/IMAGE from command line if specified
501
    if len(sys.argv) >= 7:
502
        defaults['MACHINE'] = sys.argv[6]
503
        defaults['IMAGE'] = sys.argv[6]
504
 
505
    # Dry run only with defaults
506
    varnames = parse_config(INPUT, TMPOUTPUT, DefaultDialog(dlg), defaults)
507
    # If not in default mode, present selection of all possibilities
508
    if not defmode:
509
        defopt = 0
510
        while 1:
511
            # varnames contains variable names that were in the
512
            # last question set
513
            choices = [ (x[1],defaults[x[0]]) for x in varnames ]
514
            res = dlg.menu('Configuration',choices,('save','Save'),defopt)
515
            if res == 'save':
516
                parse_config(INPUT, TMPOUTPUT, DefaultDialog(dlg), defaults)
517
                break
518
            # transfer description back to varname
519
            for i,(vname,descr) in enumerate(varnames):
520
                if res == descr:
521
                    defopt = i
522
                    break
523
            # Ask the user a simple question, produce output
524
            # as if the user answered all the other questions
525
            # with default answer
526
            varnames = parse_config(INPUT, TMPOUTPUT, dlg, defaults,
527
                                    askonly=varnames[i][0])
528
 
529
 
530
    if os.path.exists(OUTPUT):
531
        os.unlink(OUTPUT)
532
    os.rename(TMPOUTPUT, OUTPUT)
533
 
534
    if not defmode and dlg.yesno('Rebuild everything?') == 'y':
535
        os.execlp('make','make','clean','build')
536
 
537
if __name__ == '__main__':
538
    main()