aboutsummaryrefslogtreecommitdiffstats
path: root/libbe/storage/vcs/arch.py
blob: 9874345bc85cb34ae3ad5e4c0baf0190f020974d (plain) (blame)
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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
# Copyright (C) 2005-2012 Aaron Bentley <abentley@panoramicfeedback.com>
#                         Ben Finney <benf@cybersource.com.au>
#                         Chris Ball <cjb@laptop.org>
#                         Gianluca Montecchi <gian@grys.it>
#                         James Rowe <jnrowe@ukfsn.org>
#                         W. Trevor King <wking@tremily.us>
#
# This file is part of Bugs Everywhere.
#
# Bugs Everywhere is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 2 of the License, or (at your option) any
# later version.
#
# Bugs Everywhere 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 General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# Bugs Everywhere.  If not, see <http://www.gnu.org/licenses/>.

"""GNU Arch_ (tla) backend.

.. _Arch: http://www.gnu.org/software/gnu-arch/
"""

import codecs
import os
import os.path
import re
import shutil
import sys
import time # work around http://mercurial.selenic.com/bts/issue618

import libbe
from ...ui.util import user as _user
from ...util.id import uuid_gen
from ...util.subproc import CommandError
from ..util import config as _config
from . import base

if libbe.TESTING == True:
    import unittest
    import doctest


class CantAddFile(Exception):
    def __init__(self, file):
        self.file = file
        Exception.__init__(self, "Can't automatically add file %s" % file)

DEFAULT_CLIENT = 'tla'

client = _config.get_val(
    'arch_client', default=DEFAULT_CLIENT)

def new():
    return Arch()

class Arch(base.VCS):
    """:py:class:`base.VCS` implementation for GNU Arch.
    """
    name = 'arch'
    client = client
    _archive_name = None
    _archive_dir = None
    _tmp_archive = False
    _project_name = None
    _tmp_project = False
    _arch_paramdir = os.path.expanduser('~/.arch-params')

    def __init__(self, *args, **kwargs):
        base.VCS.__init__(self, *args, **kwargs)
        self.versioned = True
        self.interspersed_vcs_files = True
        self.paranoid = False
        self.__updated = [] # work around http://mercurial.selenic.com/bts/issue618

    def _vcs_version(self):
        try:
            status,output,error = self._u_invoke_client('--version')
        except CommandError:  # command not found?
            return None
        version = '\n'.join(output.splitlines()[:2])
        return version

    def _vcs_detect(self, path):
        """Detect whether a directory is revision-controlled using Arch"""
        if self._u_search_parent_directories(path, '{arch}') != None :
            _config.set_val('arch_client', client)
            return True
        return False

    def _vcs_init(self, path):
        self._create_archive(path)
        self._create_project(path)
        self._add_project_code(path)

    def _create_archive(self, path):
        """Create a temporary Arch archive in the directory PATH.  This
        archive will be removed by::

            destroy->_vcs_destroy->_remove_archive
        """
        # http://regexps.srparish.net/tutorial-tla/new-archive.html#Creating_a_New_Archive
        assert self._archive_name == None
        id = self.get_user_id()
        name, email = _user.parse_user_id(id)
        if email == None:
            email = '%s@example.com' % name
        trailer = '%s-%s' % ('bugs-everywhere-auto', uuid_gen()[0:8])
        self._archive_name = '%s--%s' % (email, trailer)
        self._archive_dir = '/tmp/%s' % trailer
        self._tmp_archive = True
        self._u_invoke_client('make-archive', self._archive_name,
                              self._archive_dir, cwd=path)

    def _invoke_client(self, *args, **kwargs):
        """Invoke the client on our archive.
        """
        assert self._archive_name != None
        command = args[0]
        if len(args) > 1:
            tailargs = args[1:]
        else:
            tailargs = []
        arglist = [command, '-A', self._archive_name]
        arglist.extend(tailargs)
        args = tuple(arglist)
        return self._u_invoke_client(*args, **kwargs)

    def _remove_archive(self):
        assert self._tmp_archive == True
        assert self._archive_dir != None
        assert self._archive_name != None
        os.remove(os.path.join(self._arch_paramdir,
                               '=locations', self._archive_name))
        shutil.rmtree(self._archive_dir)
        self._tmp_archive = False
        self._archive_dir = False
        self._archive_name = False

    def _create_project(self, path):
        """
        Create a temporary Arch project in the directory PATH.  This
        project will be removed by
          destroy->_vcs_destroy->_remove_project
        """
        # http://mwolson.org/projects/GettingStartedWithArch.html
        # http://regexps.srparish.net/tutorial-tla/new-project.html#Starting_a_New_Project
        category = 'bugs-everywhere'
        branch = 'mainline'
        version = '0.1'
        self._project_name = '%s--%s--%s' % (category, branch, version)
        self._invoke_client('archive-setup', self._project_name,
                            cwd=path)
        self._tmp_project = True

    def _remove_project(self):
        assert self._tmp_project == True
        assert self._project_name != None
        assert self._archive_dir != None
        shutil.rmtree(os.path.join(self._archive_dir, self._project_name))
        self._tmp_project = False
        self._project_name = False

    def _archive_project_name(self):
        assert self._archive_name != None
        assert self._project_name != None
        return '%s/%s' % (self._archive_name, self._project_name)

    def _adjust_naming_conventions(self, path):
        """Adjust `Arch naming conventions`_ so ``.be`` is considered source
        code.

        By default, Arch restricts source code filenames to::

            ^[_=a-zA-Z0-9].*$

        Since our bug directory ``.be`` doesn't satisfy these conventions,
        we need to adjust them.  The conventions are specified in::

            project-root/{arch}/=tagging-method

        .. _Arch naming conventions:
          http://regexps.srparish.net/tutorial-tla/naming-conventions.html
        """
        tagpath = os.path.join(path, '{arch}', '=tagging-method')
        lines_out = []
        f = codecs.open(tagpath, 'r', self.encoding)
        for line in f:
            if line.startswith('source '):
                lines_out.append('source ^[._=a-zA-X0-9].*$\n')
            else:
                lines_out.append(line)
        f.close()
        f = codecs.open(tagpath, 'w', self.encoding)
        f.write(''.join(lines_out))
        f.close()

    def _add_project_code(self, path):
        # http://mwolson.org/projects/GettingStartedWithArch.html
        # http://regexps.srparish.net/tutorial-tla/new-source.html
        # http://regexps.srparish.net/tutorial-tla/importing-first.html
        self._invoke_client('init-tree', self._project_name,
                            cwd=path)
        self._adjust_naming_conventions(path)
        self._invoke_client('import', '--summary', 'Began versioning',
                            cwd=path)

    def _vcs_destroy(self):
        if self._tmp_project == True:
            self._remove_project()
        if self._tmp_archive == True:
            self._remove_archive()
        vcs_dir = os.path.join(self.repo, '{arch}')
        if os.path.exists(vcs_dir):
            shutil.rmtree(vcs_dir)
        self._archive_name = None

    def _vcs_root(self, path):
        if not os.path.isdir(path):
            dirname = os.path.dirname(path)
        else:
            dirname = path
        status,output,error = self._u_invoke_client('tree-root', dirname)
        root = output.rstrip('\n')

        self._get_archive_project_name(root)

        return root

    def _get_archive_name(self, root):
        status,output,error = self._u_invoke_client('archives')
        lines = output.split('\n')
        # e.g. output:
        # jdoe@example.com--bugs-everywhere-auto-2008.22.24.52
        #     /tmp/BEtestXXXXXX/rootdir
        # (+ repeats)
        for archive,location in zip(lines[::2], lines[1::2]):
            if os.path.realpath(location) == os.path.realpath(root):
                self._archive_name = archive
        assert self._archive_name != None

    def _get_archive_project_name(self, root):
        # get project names
        status,output,error = self._u_invoke_client('tree-version', cwd=root)
        # e.g output
        # jdoe@example.com--bugs-everywhere-auto-2008.22.24.52/be--mainline--0.1
        archive_name,project_name = output.rstrip('\n').split('/')
        self._archive_name = archive_name
        self._project_name = project_name

    def _vcs_get_user_id(self):
        try:
            status,output,error = self._u_invoke_client('my-id')
            return output.rstrip('\n')
        except Exception, e:
            if 'no arch user id set' in e.args[0]:
                return None
            else:
                raise

    def _vcs_add(self, path):
        self._u_invoke_client('add-id', path)
        realpath = os.path.realpath(self._u_abspath(path))
        pathAdded = realpath in self._list_added(self.repo)
        if self.paranoid and not pathAdded:
            self._force_source(path)

    def _list_added(self, root):
        assert os.path.exists(root)
        assert os.access(root, os.X_OK)
        root = os.path.realpath(root)
        status,output,error = self._u_invoke_client('inventory', '--source',
                                                    '--both', '--all', root)
        inv_str = output.rstrip('\n')
        return [os.path.join(root, p) for p in inv_str.split('\n')]

    def _add_dir_rule(self, rule, dirname, root):
        inv_path = os.path.join(dirname, '.arch-inventory')
        f = codecs.open(inv_path, 'a', self.encoding)
        f.write(rule)
        f.close()
        if os.path.realpath(inv_path) not in self._list_added(root):
            paranoid = self.paranoid
            self.paranoid = False
            self.add(inv_path)
            self.paranoid = paranoid

    def _force_source(self, path):
        rule = 'source %s\n' % self._u_rel_path(path)
        self._add_dir_rule(rule, os.path.dirname(path), self.repo)
        if os.path.realpath(path) not in self._list_added(self.repo):
            raise CantAddFile(path)

    def _vcs_remove(self, path):
        if self._vcs_is_versioned(path):
            self._u_invoke_client('delete-id', path)
        arch_ids = os.path.join(self.repo, path, '.arch-ids')
        if os.path.exists(arch_ids):
            shutil.rmtree(arch_ids)

    def _vcs_update(self, path):
        self.__updated.append(path) # work around http://mercurial.selenic.com/bts/issue618

    def _vcs_is_versioned(self, path):
        if '.arch-ids' in path:
            return False
        return True

    def _vcs_get_file_contents(self, path, revision=None):
        if revision == None:
            return base.VCS._vcs_get_file_contents(self, path, revision)
        else:
            relpath = self._file_find(path, revision, relpath=True)
            return base.VCS._vcs_get_file_contents(self, relpath)

    def _file_find(self, path, revision, relpath=False):
        try:
            status,output,error = \
                self._invoke_client(
                'file-find', '--unescaped', path, revision)
            path = output.rstrip('\n').splitlines()[-1]
        except CommandError, e:
            if e.status == 2 \
                    and 'illegally formed changeset index' in e.stderr:
                raise NotImplementedError(
"""Outstanding tla bug, see
  https://bugs.launchpad.net/ubuntu/+source/tla/+bug/513472
""")
            raise
        if relpath == True:
            return path
        return os.path.abspath(os.path.join(self.repo, path))

    def _vcs_path(self, id, revision):
        return self._u_find_id(id, revision)

    def _vcs_isdir(self, path, revision):
        abspath = self._file_find(path, revision)
        return os.path.isdir(abspath)

    def _vcs_listdir(self, path, revision):
        abspath = self._file_find(path, revision)
        return [p for p in os.listdir(abspath) if self._vcs_is_versioned(p)]

    def _vcs_commit(self, commitfile, allow_empty=False):
        if allow_empty == False:
            # arch applies empty commits without complaining, so check first
            status,output,error = self._u_invoke_client('changes',expect=(0,1))
            if status == 0:
                # work around http://mercurial.selenic.com/bts/issue618
                time.sleep(1)
                for path in self.__updated:
                    os.utime(os.path.join(self.repo, path), None)
                self.__updated = []
                status,output,error = self._u_invoke_client('changes',expect=(0,1))
                if status == 0:
                # end work around
                    raise base.EmptyCommit()
        summary,body = self._u_parse_commitfile(commitfile)
        args = ['commit', '--summary', summary]
        if body != None:
            args.extend(['--log-message',body])
        status,output,error = self._u_invoke_client(*args)
        revision = None
        revline = re.compile('[*] committed (.*)')
        match = revline.search(output)
        assert match != None, output+error
        assert len(match.groups()) == 1
        revpath = match.groups()[0]
        assert not " " in revpath, revpath
        assert revpath.startswith(self._archive_project_name()+'--')
        revision = revpath[len(self._archive_project_name()+'--'):]
        return revpath

    def _vcs_revision_id(self, index):
        status,output,error = self._u_invoke_client('logs')
        logs = output.splitlines()
        first_log = logs.pop(0)
        assert first_log == 'base-0', first_log
        try:
            if index > 0:
                log = logs[index-1]
            elif index < 0:
                log = logs[index]
            else:
                return None
        except IndexError:
            return None
        return '%s--%s' % (self._archive_project_name(), log)

    def _diff(self, revision):
        status,output,error = self._u_invoke_client(
            'diff', '--summary', '--unescaped', revision, expect=(0,1))
        return output
    
    def _parse_diff(self, diff_text):
        """
        Example diff text:
        
        * local directory is at ...
        * build pristine tree for ...
        * from import revision: ...
        * patching for revision: ...
        * comparing to ...
        D  .be/dir/bugs/.arch-ids/moved.id
        D  .be/dir/bugs/.arch-ids/removed.id
        D  .be/dir/bugs/moved
        D  .be/dir/bugs/removed
        A  .be/dir/bugs/.arch-ids/moved2.id
        A  .be/dir/bugs/.arch-ids/new.id
        A  .be/dir/bugs/moved2
        A  .be/dir/bugs/new
        A  {arch}/bugs-everywhere/bugs-everywhere--mainline/...
        M  .be/dir/bugs/modified
        """
        new = []
        modified = []
        removed = []
        lines = diff_text.splitlines()
        for i,line in enumerate(lines):
            if line.startswith('* ') or '/.arch-ids/' in line:
                continue
            change,file = line.split('  ',1)
            if  file.startswith('{arch}/'):
                continue
            if change == 'A':
                new.append(file)
            elif change == 'M':
                modified.append(file)
            elif change == 'D':
                removed.append(file)
        return (new,modified,removed)

    def _vcs_changed(self, revision):
        return self._parse_diff(self._diff(revision))


if libbe.TESTING == True:
    base.make_vcs_testcase_subclasses(Arch, sys.modules[__name__])

    unitsuite =unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
    suite = unittest.TestSuite([unitsuite, doctest.DocTestSuite()])