1508
2174
configobj[name] = value
1510
2176
configobj.setdefault(section, {})[name] = value
2177
for hook in OldConfigHooks['set']:
2178
hook(self, name, value)
2179
self._set_configobj(configobj)
2181
def remove_option(self, option_name, section_name=None):
2182
configobj = self._get_configobj()
2183
if section_name is None:
2184
del configobj[option_name]
2186
del configobj[section_name][option_name]
2187
for hook in OldConfigHooks['remove']:
2188
hook(self, option_name)
1511
2189
self._set_configobj(configobj)
1513
2191
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2193
f = BytesIO(self._transport.get_bytes(self._filename))
2194
for hook in OldConfigHooks['load']:
1516
2197
except errors.NoSuchFile:
2199
except errors.PermissionDenied as e:
2200
trace.warning("Permission denied while trying to open "
2201
"configuration file %s.", urlutils.unescape_for_display(
2202
urlutils.join(self._transport.base, self._filename), "utf-8"))
2205
def _external_url(self):
2206
return urlutils.join(self._transport.external_url(), self._filename)
1519
2208
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2209
f = self._get_config_file()
2212
conf = ConfigObj(f, encoding='utf-8')
2213
except configobj.ConfigObjError as e:
2214
raise errors.ParseConfigError(e.errors, self._external_url())
2215
except UnicodeDecodeError:
2216
raise errors.ConfigContentError(self._external_url())
1522
2221
def _set_configobj(self, configobj):
1523
out_file = StringIO()
2222
out_file = BytesIO()
1524
2223
configobj.write(out_file)
1525
2224
out_file.seek(0)
1526
2225
self._transport.put_file(self._filename, out_file)
2226
for hook in OldConfigHooks['save']:
2230
class Option(object):
2231
"""An option definition.
2233
The option *values* are stored in config files and found in sections.
2235
Here we define various properties about the option itself, its default
2236
value, how to convert it from stores, what to do when invalid values are
2237
encoutered, in which config files it can be stored.
2240
def __init__(self, name, override_from_env=None,
2241
default=None, default_from_env=None,
2242
help=None, from_unicode=None, invalid=None, unquote=True):
2243
"""Build an option definition.
2245
:param name: the name used to refer to the option.
2247
:param override_from_env: A list of environment variables which can
2248
provide override any configuration setting.
2250
:param default: the default value to use when none exist in the config
2251
stores. This is either a string that ``from_unicode`` will convert
2252
into the proper type, a callable returning a unicode string so that
2253
``from_unicode`` can be used on the return value, or a python
2254
object that can be stringified (so only the empty list is supported
2257
:param default_from_env: A list of environment variables which can
2258
provide a default value. 'default' will be used only if none of the
2259
variables specified here are set in the environment.
2261
:param help: a doc string to explain the option to the user.
2263
:param from_unicode: a callable to convert the unicode string
2264
representing the option value in a store or its default value.
2266
:param invalid: the action to be taken when an invalid value is
2267
encountered in a store. This is called only when from_unicode is
2268
invoked to convert a string and returns None or raise ValueError or
2269
TypeError. Accepted values are: None (ignore invalid values),
2270
'warning' (emit a warning), 'error' (emit an error message and
2273
:param unquote: should the unicode value be unquoted before conversion.
2274
This should be used only when the store providing the values cannot
2275
safely unquote them (see http://pad.lv/906897). It is provided so
2276
daughter classes can handle the quoting themselves.
2278
if override_from_env is None:
2279
override_from_env = []
2280
if default_from_env is None:
2281
default_from_env = []
2283
self.override_from_env = override_from_env
2284
# Convert the default value to a unicode string so all values are
2285
# strings internally before conversion (via from_unicode) is attempted.
2288
elif isinstance(default, list):
2289
# Only the empty list is supported
2291
raise AssertionError(
2292
'Only empty lists are supported as default values')
2294
elif isinstance(default, (binary_type, text_type, bool, int, float)):
2295
# Rely on python to convert strings, booleans and integers
2296
self.default = u'%s' % (default,)
2297
elif callable(default):
2298
self.default = default
2300
# other python objects are not expected
2301
raise AssertionError('%r is not supported as a default value'
2303
self.default_from_env = default_from_env
2305
self.from_unicode = from_unicode
2306
self.unquote = unquote
2307
if invalid and invalid not in ('warning', 'error'):
2308
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2309
self.invalid = invalid
2315
def convert_from_unicode(self, store, unicode_value):
2316
if self.unquote and store is not None and unicode_value is not None:
2317
unicode_value = store.unquote(unicode_value)
2318
if self.from_unicode is None or unicode_value is None:
2319
# Don't convert or nothing to convert
2320
return unicode_value
2322
converted = self.from_unicode(unicode_value)
2323
except (ValueError, TypeError):
2324
# Invalid values are ignored
2326
if converted is None and self.invalid is not None:
2327
# The conversion failed
2328
if self.invalid == 'warning':
2329
trace.warning('Value "%s" is not valid for "%s"',
2330
unicode_value, self.name)
2331
elif self.invalid == 'error':
2332
raise errors.ConfigOptionValueError(self.name, unicode_value)
2335
def get_override(self):
2337
for var in self.override_from_env:
2339
# If the env variable is defined, its value takes precedence
2340
value = os.environ[var].decode(osutils.get_user_encoding())
2346
def get_default(self):
2348
for var in self.default_from_env:
2350
# If the env variable is defined, its value is the default one
2351
value = os.environ[var]
2353
value = value.decode(osutils.get_user_encoding())
2358
# Otherwise, fallback to the value defined at registration
2359
if callable(self.default):
2360
value = self.default()
2361
if not isinstance(value, text_type):
2362
raise AssertionError(
2363
"Callable default value for '%s' should be unicode"
2366
value = self.default
2369
def get_help_topic(self):
2372
def get_help_text(self, additional_see_also=None, plain=True):
2374
from breezy import help_topics
2375
result += help_topics._format_see_also(additional_see_also)
2377
result = help_topics.help_as_plain_text(result)
2381
# Predefined converters to get proper values from store
2383
def bool_from_store(unicode_str):
2384
return ui.bool_from_string(unicode_str)
2387
def int_from_store(unicode_str):
2388
return int(unicode_str)
2391
_unit_suffixes = dict(K=10**3, M=10**6, G=10**9)
2393
def int_SI_from_store(unicode_str):
2394
"""Convert a human readable size in SI units, e.g 10MB into an integer.
2396
Accepted suffixes are K,M,G. It is case-insensitive and may be followed
2397
by a trailing b (i.e. Kb, MB). This is intended to be practical and not
2400
:return Integer, expanded to its base-10 value if a proper SI unit is
2401
found, None otherwise.
2403
regexp = "^(\d+)(([" + ''.join(_unit_suffixes) + "])b?)?$"
2404
p = re.compile(regexp, re.IGNORECASE)
2405
m = p.match(unicode_str)
2408
val, _, unit = m.groups()
2412
coeff = _unit_suffixes[unit.upper()]
2414
raise ValueError(gettext('{0} is not an SI unit.').format(unit))
2419
def float_from_store(unicode_str):
2420
return float(unicode_str)
2423
# Use an empty dict to initialize an empty configobj avoiding all parsing and
2425
_list_converter_config = configobj.ConfigObj(
2426
{}, encoding='utf-8', list_values=True, interpolation=False)
2429
class ListOption(Option):
2431
def __init__(self, name, default=None, default_from_env=None,
2432
help=None, invalid=None):
2433
"""A list Option definition.
2435
This overrides the base class so the conversion from a unicode string
2436
can take quoting into account.
2438
super(ListOption, self).__init__(
2439
name, default=default, default_from_env=default_from_env,
2440
from_unicode=self.from_unicode, help=help,
2441
invalid=invalid, unquote=False)
2443
def from_unicode(self, unicode_str):
2444
if not isinstance(unicode_str, string_types):
2446
# Now inject our string directly as unicode. All callers got their
2447
# value from configobj, so values that need to be quoted are already
2449
_list_converter_config.reset()
2450
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2451
maybe_list = _list_converter_config['list']
2452
if isinstance(maybe_list, string_types):
2454
# A single value, most probably the user forgot (or didn't care
2455
# to add) the final ','
2458
# The empty string, convert to empty list
2461
# We rely on ConfigObj providing us with a list already
2466
class RegistryOption(Option):
2467
"""Option for a choice from a registry."""
2469
def __init__(self, name, registry, default_from_env=None,
2470
help=None, invalid=None):
2471
"""A registry based Option definition.
2473
This overrides the base class so the conversion from a unicode string
2474
can take quoting into account.
2476
super(RegistryOption, self).__init__(
2477
name, default=lambda: unicode(registry.default_key),
2478
default_from_env=default_from_env,
2479
from_unicode=self.from_unicode, help=help,
2480
invalid=invalid, unquote=False)
2481
self.registry = registry
2483
def from_unicode(self, unicode_str):
2484
if not isinstance(unicode_str, string_types):
2487
return self.registry.get(unicode_str)
2490
"Invalid value %s for %s."
2491
"See help for a list of possible values." % (unicode_str,
2496
ret = [self._help, "\n\nThe following values are supported:\n"]
2497
for key in self.registry.keys():
2498
ret.append(" %s - %s\n" % (key, self.registry.get_help(key)))
2502
_option_ref_re = lazy_regex.lazy_compile('({[^\d\W](?:\.\w|-\w|\w)*})')
2503
"""Describes an expandable option reference.
2505
We want to match the most embedded reference first.
2507
I.e. for '{{foo}}' we will get '{foo}',
2508
for '{bar{baz}}' we will get '{baz}'
2511
def iter_option_refs(string):
2512
# Split isolate refs so every other chunk is a ref
2514
for chunk in _option_ref_re.split(string):
2519
class OptionRegistry(registry.Registry):
2520
"""Register config options by their name.
2522
This overrides ``registry.Registry`` to simplify registration by acquiring
2523
some information from the option object itself.
2526
def _check_option_name(self, option_name):
2527
"""Ensures an option name is valid.
2529
:param option_name: The name to validate.
2531
if _option_ref_re.match('{%s}' % option_name) is None:
2532
raise errors.IllegalOptionName(option_name)
2534
def register(self, option):
2535
"""Register a new option to its name.
2537
:param option: The option to register. Its name is used as the key.
2539
self._check_option_name(option.name)
2540
super(OptionRegistry, self).register(option.name, option,
2543
def register_lazy(self, key, module_name, member_name):
2544
"""Register a new option to be loaded on request.
2546
:param key: the key to request the option later. Since the registration
2547
is lazy, it should be provided and match the option name.
2549
:param module_name: the python path to the module. Such as 'os.path'.
2551
:param member_name: the member of the module to return. If empty or
2552
None, get() will return the module itself.
2554
self._check_option_name(key)
2555
super(OptionRegistry, self).register_lazy(key,
2556
module_name, member_name)
2558
def get_help(self, key=None):
2559
"""Get the help text associated with the given key"""
2560
option = self.get(key)
2561
the_help = option.help
2562
if callable(the_help):
2563
return the_help(self, key)
2567
option_registry = OptionRegistry()
2570
# Registered options in lexicographical order
2572
option_registry.register(
2573
Option('append_revisions_only',
2574
default=None, from_unicode=bool_from_store, invalid='warning',
2576
Whether to only append revisions to the mainline.
2578
If this is set to true, then it is not possible to change the
2579
existing mainline of the branch.
2581
option_registry.register(
2582
ListOption('acceptable_keys',
2585
List of GPG key patterns which are acceptable for verification.
2587
option_registry.register(
2588
Option('add.maximum_file_size',
2589
default=u'20MB', from_unicode=int_SI_from_store,
2591
Size above which files should be added manually.
2593
Files below this size are added automatically when using ``bzr add`` without
2596
A negative value means disable the size check.
2598
option_registry.register(
2600
default=None, from_unicode=bool_from_store,
2602
Is the branch bound to ``bound_location``.
2604
If set to "True", the branch should act as a checkout, and push each commit to
2605
the bound_location. This option is normally set by ``bind``/``unbind``.
2607
See also: bound_location.
2609
option_registry.register(
2610
Option('bound_location',
2613
The location that commits should go to when acting as a checkout.
2615
This option is normally set by ``bind``.
2619
option_registry.register(
2620
Option('branch.fetch_tags', default=False, from_unicode=bool_from_store,
2622
Whether revisions associated with tags should be fetched.
2624
option_registry.register_lazy(
2625
'bzr.transform.orphan_policy', 'breezy.transform', 'opt_transform_orphan')
2626
option_registry.register(
2627
Option('bzr.workingtree.worth_saving_limit', default=10,
2628
from_unicode=int_from_store, invalid='warning',
2630
How many changes before saving the dirstate.
2632
-1 means that we will never rewrite the dirstate file for only
2633
stat-cache changes. Regardless of this setting, we will always rewrite
2634
the dirstate file if a file is added/removed/renamed/etc. This flag only
2635
affects the behavior of updating the dirstate file after we notice that
2636
a file has been touched.
2638
option_registry.register(
2639
Option('bugtracker', default=None,
2641
Default bug tracker to use.
2643
This bug tracker will be used for example when marking bugs
2644
as fixed using ``bzr commit --fixes``, if no explicit
2645
bug tracker was specified.
2647
option_registry.register(
2648
Option('check_signatures', default=CHECK_IF_POSSIBLE,
2649
from_unicode=signature_policy_from_unicode,
2651
GPG checking policy.
2653
Possible values: require, ignore, check-available (default)
2655
this option will control whether bzr will require good gpg
2656
signatures, ignore them, or check them if they are
2659
option_registry.register(
2660
Option('child_submit_format',
2661
help='''The preferred format of submissions to this branch.'''))
2662
option_registry.register(
2663
Option('child_submit_to',
2664
help='''Where submissions to this branch are mailed to.'''))
2665
option_registry.register(
2666
Option('create_signatures', default=SIGN_WHEN_REQUIRED,
2667
from_unicode=signing_policy_from_unicode,
2671
Possible values: always, never, when-required (default)
2673
This option controls whether bzr will always create
2674
gpg signatures or not on commits.
2676
option_registry.register(
2677
Option('dirstate.fdatasync', default=True,
2678
from_unicode=bool_from_store,
2680
Flush dirstate changes onto physical disk?
2682
If true (default), working tree metadata changes are flushed through the
2683
OS buffers to physical disk. This is somewhat slower, but means data
2684
should not be lost if the machine crashes. See also repository.fdatasync.
2686
option_registry.register(
2687
ListOption('debug_flags', default=[],
2688
help='Debug flags to activate.'))
2689
option_registry.register(
2690
Option('default_format', default='2a',
2691
help='Format used when creating branches.'))
2692
option_registry.register(
2693
Option('dpush_strict', default=None,
2694
from_unicode=bool_from_store,
2696
The default value for ``dpush --strict``.
2698
If present, defines the ``--strict`` option default value for checking
2699
uncommitted changes before pushing into a different VCS without any
2700
custom bzr metadata.
2702
option_registry.register(
2704
help='The command called to launch an editor to enter a message.'))
2705
option_registry.register(
2706
Option('email', override_from_env=['BRZ_EMAIL'], default=default_email,
2707
help='The users identity'))
2708
option_registry.register(
2709
Option('gpg_signing_command',
2712
Program to use use for creating signatures.
2714
This should support at least the -u and --clearsign options.
2716
option_registry.register(
2717
Option('gpg_signing_key',
2720
GPG key to use for signing.
2722
This defaults to the first key associated with the users email.
2724
option_registry.register(
2726
help='Language to translate messages into.'))
2727
option_registry.register(
2728
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2730
Steal locks that appears to be dead.
2732
If set to True, bzr will check if a lock is supposed to be held by an
2733
active process from the same user on the same machine. If the user and
2734
machine match, but no process with the given PID is active, then bzr
2735
will automatically break the stale lock, and create a new lock for
2737
Otherwise, bzr will prompt as normal to break the lock.
2739
option_registry.register(
2740
Option('log_format', default='long',
2742
Log format to use when displaying revisions.
2744
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2745
may be provided by plugins.
2747
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2749
option_registry.register(
2750
Option('output_encoding',
2751
help= 'Unicode encoding for output'
2752
' (terminal encoding if not specified).'))
2753
option_registry.register(
2754
Option('parent_location',
2757
The location of the default branch for pull or merge.
2759
This option is normally set when creating a branch, the first ``pull`` or by
2760
``pull --remember``.
2762
option_registry.register(
2763
Option('post_commit', default=None,
2765
Post commit functions.
2767
An ordered list of python functions to call, separated by spaces.
2769
Each function takes branch, rev_id as parameters.
2771
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2773
option_registry.register(
2774
Option('public_branch',
2777
A publically-accessible version of this branch.
2779
This implies that the branch setting this option is not publically-accessible.
2780
Used and set by ``bzr send``.
2782
option_registry.register(
2783
Option('push_location',
2786
The location of the default branch for push.
2788
This option is normally set by the first ``push`` or ``push --remember``.
2790
option_registry.register(
2791
Option('push_strict', default=None,
2792
from_unicode=bool_from_store,
2794
The default value for ``push --strict``.
2796
If present, defines the ``--strict`` option default value for checking
2797
uncommitted changes before sending a merge directive.
2799
option_registry.register(
2800
Option('repository.fdatasync', default=True,
2801
from_unicode=bool_from_store,
2803
Flush repository changes onto physical disk?
2805
If true (default), repository changes are flushed through the OS buffers
2806
to physical disk. This is somewhat slower, but means data should not be
2807
lost if the machine crashes. See also dirstate.fdatasync.
2809
option_registry.register_lazy('smtp_server',
2810
'breezy.smtp_connection', 'smtp_server')
2811
option_registry.register_lazy('smtp_password',
2812
'breezy.smtp_connection', 'smtp_password')
2813
option_registry.register_lazy('smtp_username',
2814
'breezy.smtp_connection', 'smtp_username')
2815
option_registry.register(
2816
Option('selftest.timeout',
2818
from_unicode=int_from_store,
2819
help='Abort selftest if one test takes longer than this many seconds',
2822
option_registry.register(
2823
Option('send_strict', default=None,
2824
from_unicode=bool_from_store,
2826
The default value for ``send --strict``.
2828
If present, defines the ``--strict`` option default value for checking
2829
uncommitted changes before sending a bundle.
2832
option_registry.register(
2833
Option('serve.client_timeout',
2834
default=300.0, from_unicode=float_from_store,
2835
help="If we wait for a new request from a client for more than"
2836
" X seconds, consider the client idle, and hangup."))
2837
option_registry.register(
2838
Option('stacked_on_location',
2840
help="""The location where this branch is stacked on."""))
2841
option_registry.register(
2842
Option('submit_branch',
2845
The branch you intend to submit your current work to.
2847
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2848
by the ``submit:`` revision spec.
2850
option_registry.register(
2852
help='''Where submissions from this branch are mailed to.'''))
2853
option_registry.register(
2854
ListOption('suppress_warnings',
2856
help="List of warning classes to suppress."))
2857
option_registry.register(
2858
Option('validate_signatures_in_log', default=False,
2859
from_unicode=bool_from_store, invalid='warning',
2860
help='''Whether to validate signatures in brz log.'''))
2861
option_registry.register_lazy('ssl.ca_certs',
2862
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_ca_certs')
2864
option_registry.register_lazy('ssl.cert_reqs',
2865
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_cert_reqs')
2868
class Section(object):
2869
"""A section defines a dict of option name => value.
2871
This is merely a read-only dict which can add some knowledge about the
2872
options. It is *not* a python dict object though and doesn't try to mimic
2876
def __init__(self, section_id, options):
2877
self.id = section_id
2878
# We re-use the dict-like object received
2879
self.options = options
2881
def get(self, name, default=None, expand=True):
2882
return self.options.get(name, default)
2884
def iter_option_names(self):
2885
for k in self.options.keys():
2889
# Mostly for debugging use
2890
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2893
_NewlyCreatedOption = object()
2894
"""Was the option created during the MutableSection lifetime"""
2895
_DeletedOption = object()
2896
"""Was the option deleted during the MutableSection lifetime"""
2899
class MutableSection(Section):
2900
"""A section allowing changes and keeping track of the original values."""
2902
def __init__(self, section_id, options):
2903
super(MutableSection, self).__init__(section_id, options)
2904
self.reset_changes()
2906
def set(self, name, value):
2907
if name not in self.options:
2908
# This is a new option
2909
self.orig[name] = _NewlyCreatedOption
2910
elif name not in self.orig:
2911
self.orig[name] = self.get(name, None)
2912
self.options[name] = value
2914
def remove(self, name):
2915
if name not in self.orig and name in self.options:
2916
self.orig[name] = self.get(name, None)
2917
del self.options[name]
2919
def reset_changes(self):
2922
def apply_changes(self, dirty, store):
2923
"""Apply option value changes.
2925
``self`` has been reloaded from the persistent storage. ``dirty``
2926
contains the changes made since the previous loading.
2928
:param dirty: the mutable section containing the changes.
2930
:param store: the store containing the section
2932
for k, expected in dirty.orig.items():
2933
actual = dirty.get(k, _DeletedOption)
2934
reloaded = self.get(k, _NewlyCreatedOption)
2935
if actual is _DeletedOption:
2936
if k in self.options:
2940
# Report concurrent updates in an ad-hoc way. This should only
2941
# occurs when different processes try to update the same option
2942
# which is not supported (as in: the config framework is not meant
2943
# to be used as a sharing mechanism).
2944
if expected != reloaded:
2945
if actual is _DeletedOption:
2946
actual = '<DELETED>'
2947
if reloaded is _NewlyCreatedOption:
2948
reloaded = '<CREATED>'
2949
if expected is _NewlyCreatedOption:
2950
expected = '<CREATED>'
2951
# Someone changed the value since we get it from the persistent
2953
trace.warning(gettext(
2954
"Option {0} in section {1} of {2} was changed"
2955
" from {3} to {4}. The {5} value will be saved.".format(
2956
k, self.id, store.external_url(), expected,
2958
# No need to keep track of these changes
2959
self.reset_changes()
2962
class Store(object):
2963
"""Abstract interface to persistent storage for configuration options."""
2965
readonly_section_class = Section
2966
mutable_section_class = MutableSection
2969
# Which sections need to be saved (by section id). We use a dict here
2970
# so the dirty sections can be shared by multiple callers.
2971
self.dirty_sections = {}
2973
def is_loaded(self):
2974
"""Returns True if the Store has been loaded.
2976
This is used to implement lazy loading and ensure the persistent
2977
storage is queried only when needed.
2979
raise NotImplementedError(self.is_loaded)
2982
"""Loads the Store from persistent storage."""
2983
raise NotImplementedError(self.load)
2985
def _load_from_string(self, bytes):
2986
"""Create a store from a string in configobj syntax.
2988
:param bytes: A string representing the file content.
2990
raise NotImplementedError(self._load_from_string)
2993
"""Unloads the Store.
2995
This should make is_loaded() return False. This is used when the caller
2996
knows that the persistent storage has changed or may have change since
2999
raise NotImplementedError(self.unload)
3001
def quote(self, value):
3002
"""Quote a configuration option value for storing purposes.
3004
This allows Stacks to present values as they will be stored.
3008
def unquote(self, value):
3009
"""Unquote a configuration option value into unicode.
3011
The received value is quoted as stored.
3016
"""Saves the Store to persistent storage."""
3017
raise NotImplementedError(self.save)
3019
def _need_saving(self):
3020
for s in self.dirty_sections.values():
3022
# At least one dirty section contains a modification
3026
def apply_changes(self, dirty_sections):
3027
"""Apply changes from dirty sections while checking for coherency.
3029
The Store content is discarded and reloaded from persistent storage to
3030
acquire up-to-date values.
3032
Dirty sections are MutableSection which kept track of the value they
3033
are expected to update.
3035
# We need an up-to-date version from the persistent storage, unload the
3036
# store. The reload will occur when needed (triggered by the first
3037
# get_mutable_section() call below.
3039
# Apply the changes from the preserved dirty sections
3040
for section_id, dirty in dirty_sections.items():
3041
clean = self.get_mutable_section(section_id)
3042
clean.apply_changes(dirty, self)
3043
# Everything is clean now
3044
self.dirty_sections = {}
3046
def save_changes(self):
3047
"""Saves the Store to persistent storage if changes occurred.
3049
Apply the changes recorded in the mutable sections to a store content
3050
refreshed from persistent storage.
3052
raise NotImplementedError(self.save_changes)
3054
def external_url(self):
3055
raise NotImplementedError(self.external_url)
3057
def get_sections(self):
3058
"""Returns an ordered iterable of existing sections.
3060
:returns: An iterable of (store, section).
3062
raise NotImplementedError(self.get_sections)
3064
def get_mutable_section(self, section_id=None):
3065
"""Returns the specified mutable section.
3067
:param section_id: The section identifier
3069
raise NotImplementedError(self.get_mutable_section)
3072
# Mostly for debugging use
3073
return "<config.%s(%s)>" % (self.__class__.__name__,
3074
self.external_url())
3077
class CommandLineStore(Store):
3078
"A store to carry command line overrides for the config options."""
3080
def __init__(self, opts=None):
3081
super(CommandLineStore, self).__init__()
3088
# The dict should be cleared but not replaced so it can be shared.
3089
self.options.clear()
3091
def _from_cmdline(self, overrides):
3092
# Reset before accepting new definitions
3094
for over in overrides:
3096
name, value = over.split('=', 1)
3098
raise errors.BzrCommandError(
3099
gettext("Invalid '%s', should be of the form 'name=value'")
3101
self.options[name] = value
3103
def external_url(self):
3104
# Not an url but it makes debugging easier and is never needed
3108
def get_sections(self):
3109
yield self, self.readonly_section_class(None, self.options)
3112
class IniFileStore(Store):
3113
"""A config Store using ConfigObj for storage.
3115
:ivar _config_obj: Private member to hold the ConfigObj instance used to
3116
serialize/deserialize the config file.
3120
"""A config Store using ConfigObj for storage.
3122
super(IniFileStore, self).__init__()
3123
self._config_obj = None
3125
def is_loaded(self):
3126
return self._config_obj != None
3129
self._config_obj = None
3130
self.dirty_sections = {}
3132
def _load_content(self):
3133
"""Load the config file bytes.
3135
This should be provided by subclasses
3137
:return: Byte string
3139
raise NotImplementedError(self._load_content)
3141
def _save_content(self, content):
3142
"""Save the config file bytes.
3144
This should be provided by subclasses
3146
:param content: Config file bytes to write
3148
raise NotImplementedError(self._save_content)
3151
"""Load the store from the associated file."""
3152
if self.is_loaded():
3154
content = self._load_content()
3155
self._load_from_string(content)
3156
for hook in ConfigHooks['load']:
3159
def _load_from_string(self, bytes):
3160
"""Create a config store from a string.
3162
:param bytes: A string representing the file content.
3164
if self.is_loaded():
3165
raise AssertionError('Already loaded: %r' % (self._config_obj,))
3166
co_input = BytesIO(bytes)
3168
# The config files are always stored utf8-encoded
3169
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3171
except configobj.ConfigObjError as e:
3172
self._config_obj = None
3173
raise errors.ParseConfigError(e.errors, self.external_url())
3174
except UnicodeDecodeError:
3175
raise errors.ConfigContentError(self.external_url())
3177
def save_changes(self):
3178
if not self.is_loaded():
3181
if not self._need_saving():
3183
# Preserve the current version
3184
dirty_sections = self.dirty_sections.copy()
3185
self.apply_changes(dirty_sections)
3186
# Save to the persistent storage
3190
if not self.is_loaded():
3194
self._config_obj.write(out)
3195
self._save_content(out.getvalue())
3196
for hook in ConfigHooks['save']:
3199
def get_sections(self):
3200
"""Get the configobj section in the file order.
3202
:returns: An iterable of (store, section).
3204
# We need a loaded store
3207
except (errors.NoSuchFile, errors.PermissionDenied):
3208
# If the file can't be read, there is no sections
3210
cobj = self._config_obj
3212
yield self, self.readonly_section_class(None, cobj)
3213
for section_name in cobj.sections:
3215
self.readonly_section_class(section_name,
3216
cobj[section_name]))
3218
def get_mutable_section(self, section_id=None):
3219
# We need a loaded store
3222
except errors.NoSuchFile:
3223
# The file doesn't exist, let's pretend it was empty
3224
self._load_from_string(b'')
3225
if section_id in self.dirty_sections:
3226
# We already created a mutable section for this id
3227
return self.dirty_sections[section_id]
3228
if section_id is None:
3229
section = self._config_obj
3231
section = self._config_obj.setdefault(section_id, {})
3232
mutable_section = self.mutable_section_class(section_id, section)
3233
# All mutable sections can become dirty
3234
self.dirty_sections[section_id] = mutable_section
3235
return mutable_section
3237
def quote(self, value):
3239
# configobj conflates automagical list values and quoting
3240
self._config_obj.list_values = True
3241
return self._config_obj._quote(value)
3243
self._config_obj.list_values = False
3245
def unquote(self, value):
3246
if value and isinstance(value, string_types):
3247
# _unquote doesn't handle None nor empty strings nor anything that
3248
# is not a string, really.
3249
value = self._config_obj._unquote(value)
3252
def external_url(self):
3253
# Since an IniFileStore can be used without a file (at least in tests),
3254
# it's better to provide something than raising a NotImplementedError.
3255
# All daughter classes are supposed to provide an implementation
3257
return 'In-Process Store, no URL'
3260
class TransportIniFileStore(IniFileStore):
3261
"""IniFileStore that loads files from a transport.
3263
:ivar transport: The transport object where the config file is located.
3265
:ivar file_name: The config file basename in the transport directory.
3268
def __init__(self, transport, file_name):
3269
"""A Store using a ini file on a Transport
3271
:param transport: The transport object where the config file is located.
3272
:param file_name: The config file basename in the transport directory.
3274
super(TransportIniFileStore, self).__init__()
3275
self.transport = transport
3276
self.file_name = file_name
3278
def _load_content(self):
3280
return self.transport.get_bytes(self.file_name)
3281
except errors.PermissionDenied:
3282
trace.warning("Permission denied while trying to load "
3283
"configuration store %s.", self.external_url())
3286
def _save_content(self, content):
3287
self.transport.put_bytes(self.file_name, content)
3289
def external_url(self):
3290
# FIXME: external_url should really accepts an optional relpath
3291
# parameter (bug #750169) :-/ -- vila 2011-04-04
3292
# The following will do in the interim but maybe we don't want to
3293
# expose a path here but rather a config ID and its associated
3294
# object </hand wawe>.
3295
return urlutils.join(
3296
self.transport.external_url(), urlutils.escape(self.file_name))
3299
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3300
# unlockable stores for use with objects that can already ensure the locking
3301
# (think branches). If different stores (not based on ConfigObj) are created,
3302
# they may face the same issue.
3305
class LockableIniFileStore(TransportIniFileStore):
3306
"""A ConfigObjStore using locks on save to ensure store integrity."""
3308
def __init__(self, transport, file_name, lock_dir_name=None):
3309
"""A config Store using ConfigObj for storage.
3311
:param transport: The transport object where the config file is located.
3313
:param file_name: The config file basename in the transport directory.
3315
if lock_dir_name is None:
3316
lock_dir_name = 'lock'
3317
self.lock_dir_name = lock_dir_name
3318
super(LockableIniFileStore, self).__init__(transport, file_name)
3319
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3321
def lock_write(self, token=None):
3322
"""Takes a write lock in the directory containing the config file.
3324
If the directory doesn't exist it is created.
3326
# FIXME: This doesn't check the ownership of the created directories as
3327
# ensure_config_dir_exists does. It should if the transport is local
3328
# -- vila 2011-04-06
3329
self.transport.create_prefix()
3330
return self._lock.lock_write(token)
3335
def break_lock(self):
3336
self._lock.break_lock()
3340
# We need to be able to override the undecorated implementation
3341
self.save_without_locking()
3343
def save_without_locking(self):
3344
super(LockableIniFileStore, self).save()
3347
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
3348
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
3349
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
3351
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
3352
# functions or a registry will make it easier and clearer for tests, focusing
3353
# on the relevant parts of the API that needs testing -- vila 20110503 (based
3354
# on a poolie's remark)
3355
class GlobalStore(LockableIniFileStore):
3356
"""A config store for global options.
3358
There is a single GlobalStore for a given process.
3361
def __init__(self, possible_transports=None):
3362
t = transport.get_transport_from_path(
3363
config_dir(), possible_transports=possible_transports)
3364
super(GlobalStore, self).__init__(t, 'bazaar.conf')
3368
class LocationStore(LockableIniFileStore):
3369
"""A config store for options specific to a location.
3371
There is a single LocationStore for a given process.
3374
def __init__(self, possible_transports=None):
3375
t = transport.get_transport_from_path(
3376
config_dir(), possible_transports=possible_transports)
3377
super(LocationStore, self).__init__(t, 'locations.conf')
3378
self.id = 'locations'
3381
class BranchStore(TransportIniFileStore):
3382
"""A config store for branch options.
3384
There is a single BranchStore for a given branch.
3387
def __init__(self, branch):
3388
super(BranchStore, self).__init__(branch.control_transport,
3390
self.branch = branch
3394
class ControlStore(LockableIniFileStore):
3396
def __init__(self, bzrdir):
3397
super(ControlStore, self).__init__(bzrdir.transport,
3399
lock_dir_name='branch_lock')
3403
class SectionMatcher(object):
3404
"""Select sections into a given Store.
3406
This is intended to be used to postpone getting an iterable of sections
3410
def __init__(self, store):
3413
def get_sections(self):
3414
# This is where we require loading the store so we can see all defined
3416
sections = self.store.get_sections()
3417
# Walk the revisions in the order provided
3418
for store, s in sections:
3422
def match(self, section):
3423
"""Does the proposed section match.
3425
:param section: A Section object.
3427
:returns: True if the section matches, False otherwise.
3429
raise NotImplementedError(self.match)
3432
class NameMatcher(SectionMatcher):
3434
def __init__(self, store, section_id):
3435
super(NameMatcher, self).__init__(store)
3436
self.section_id = section_id
3438
def match(self, section):
3439
return section.id == self.section_id
3442
class LocationSection(Section):
3444
def __init__(self, section, extra_path, branch_name=None):
3445
super(LocationSection, self).__init__(section.id, section.options)
3446
self.extra_path = extra_path
3447
if branch_name is None:
3449
self.locals = {'relpath': extra_path,
3450
'basename': urlutils.basename(extra_path),
3451
'branchname': branch_name}
3453
def get(self, name, default=None, expand=True):
3454
value = super(LocationSection, self).get(name, default)
3455
if value is not None and expand:
3456
policy_name = self.get(name + ':policy', None)
3457
policy = _policy_value.get(policy_name, POLICY_NONE)
3458
if policy == POLICY_APPENDPATH:
3459
value = urlutils.join(value, self.extra_path)
3460
# expand section local options right now (since POLICY_APPENDPATH
3461
# will never add options references, it's ok to expand after it).
3463
for is_ref, chunk in iter_option_refs(value):
3465
chunks.append(chunk)
3468
if ref in self.locals:
3469
chunks.append(self.locals[ref])
3471
chunks.append(chunk)
3472
value = ''.join(chunks)
3476
class StartingPathMatcher(SectionMatcher):
3477
"""Select sections for a given location respecting the Store order."""
3479
# FIXME: Both local paths and urls can be used for section names as well as
3480
# ``location`` to stay consistent with ``LocationMatcher`` which itself
3481
# inherited the fuzziness from the previous ``LocationConfig``
3482
# implementation. We probably need to revisit which encoding is allowed for
3483
# both ``location`` and section names and how we normalize
3484
# them. http://pad.lv/85479, http://pad.lv/437009 and http://359320 are
3485
# related too. -- vila 2012-01-04
3487
def __init__(self, store, location):
3488
super(StartingPathMatcher, self).__init__(store)
3489
if location.startswith('file://'):
3490
location = urlutils.local_path_from_url(location)
3491
self.location = location
3493
def get_sections(self):
3494
"""Get all sections matching ``location`` in the store.
3496
The most generic sections are described first in the store, then more
3497
specific ones can be provided for reduced scopes.
3499
The returned section are therefore returned in the reversed order so
3500
the most specific ones can be found first.
3502
location_parts = self.location.rstrip('/').split('/')
3504
# Later sections are more specific, they should be returned first
3505
for _, section in reversed(list(store.get_sections())):
3506
if section.id is None:
3507
# The no-name section is always included if present
3508
yield store, LocationSection(section, self.location)
3510
section_path = section.id
3511
if section_path.startswith('file://'):
3512
# the location is already a local path or URL, convert the
3513
# section id to the same format
3514
section_path = urlutils.local_path_from_url(section_path)
3515
if (self.location.startswith(section_path)
3516
or fnmatch.fnmatch(self.location, section_path)):
3517
section_parts = section_path.rstrip('/').split('/')
3518
extra_path = '/'.join(location_parts[len(section_parts):])
3519
yield store, LocationSection(section, extra_path)
3522
class LocationMatcher(SectionMatcher):
3524
def __init__(self, store, location):
3525
super(LocationMatcher, self).__init__(store)
3526
url, params = urlutils.split_segment_parameters(location)
3527
if location.startswith('file://'):
3528
location = urlutils.local_path_from_url(location)
3529
self.location = location
3530
branch_name = params.get('branch')
3531
if branch_name is None:
3532
self.branch_name = urlutils.basename(self.location)
3534
self.branch_name = urlutils.unescape(branch_name)
3536
def _get_matching_sections(self):
3537
"""Get all sections matching ``location``."""
3538
# We slightly diverge from LocalConfig here by allowing the no-name
3539
# section as the most generic one and the lower priority.
3540
no_name_section = None
3542
# Filter out the no_name_section so _iter_for_location_by_parts can be
3543
# used (it assumes all sections have a name).
3544
for _, section in self.store.get_sections():
3545
if section.id is None:
3546
no_name_section = section
3548
all_sections.append(section)
3549
# Unfortunately _iter_for_location_by_parts deals with section names so
3550
# we have to resync.
3551
filtered_sections = _iter_for_location_by_parts(
3552
[s.id for s in all_sections], self.location)
3553
iter_all_sections = iter(all_sections)
3554
matching_sections = []
3555
if no_name_section is not None:
3556
matching_sections.append(
3557
(0, LocationSection(no_name_section, self.location)))
3558
for section_id, extra_path, length in filtered_sections:
3559
# a section id is unique for a given store so it's safe to take the
3560
# first matching section while iterating. Also, all filtered
3561
# sections are part of 'all_sections' and will always be found
3564
section = next(iter_all_sections)
3565
if section_id == section.id:
3566
section = LocationSection(section, extra_path,
3568
matching_sections.append((length, section))
3570
return matching_sections
3572
def get_sections(self):
3573
# Override the default implementation as we want to change the order
3574
# We want the longest (aka more specific) locations first
3575
sections = sorted(self._get_matching_sections(),
3576
key=lambda match: (match[0], match[1].id),
3578
# Sections mentioning 'ignore_parents' restrict the selection
3579
for _, section in sections:
3580
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3581
ignore = section.get('ignore_parents', None)
3582
if ignore is not None:
3583
ignore = ui.bool_from_string(ignore)
3586
# Finally, we have a valid section
3587
yield self.store, section
3590
# FIXME: _shared_stores should be an attribute of a library state once a
3591
# library_state object is always available.
3593
_shared_stores_at_exit_installed = False
3595
class Stack(object):
3596
"""A stack of configurations where an option can be defined"""
3598
def __init__(self, sections_def, store=None, mutable_section_id=None):
3599
"""Creates a stack of sections with an optional store for changes.
3601
:param sections_def: A list of Section or callables that returns an
3602
iterable of Section. This defines the Sections for the Stack and
3603
can be called repeatedly if needed.
3605
:param store: The optional Store where modifications will be
3606
recorded. If none is specified, no modifications can be done.
3608
:param mutable_section_id: The id of the MutableSection where changes
3609
are recorded. This requires the ``store`` parameter to be
3612
self.sections_def = sections_def
3614
self.mutable_section_id = mutable_section_id
3616
def iter_sections(self):
3617
"""Iterate all the defined sections."""
3618
# Ensuring lazy loading is achieved by delaying section matching (which
3619
# implies querying the persistent storage) until it can't be avoided
3620
# anymore by using callables to describe (possibly empty) section
3622
for sections in self.sections_def:
3623
for store, section in sections():
3624
yield store, section
3626
def get(self, name, expand=True, convert=True):
3627
"""Return the *first* option value found in the sections.
3629
This is where we guarantee that sections coming from Store are loaded
3630
lazily: the loading is delayed until we need to either check that an
3631
option exists or get its value, which in turn may require to discover
3632
in which sections it can be defined. Both of these (section and option
3633
existence) require loading the store (even partially).
3635
:param name: The queried option.
3637
:param expand: Whether options references should be expanded.
3639
:param convert: Whether the option value should be converted from
3640
unicode (do nothing for non-registered options).
3642
:returns: The value of the option.
3644
# FIXME: No caching of options nor sections yet -- vila 20110503
3646
found_store = None # Where the option value has been found
3647
# If the option is registered, it may provide additional info about
3650
opt = option_registry.get(name)
3655
def expand_and_convert(val):
3656
# This may need to be called in different contexts if the value is
3657
# None or ends up being None during expansion or conversion.
3660
if isinstance(val, string_types):
3661
val = self._expand_options_in_string(val)
3663
trace.warning('Cannot expand "%s":'
3664
' %s does not support option expansion'
3665
% (name, type(val)))
3667
val = found_store.unquote(val)
3669
val = opt.convert_from_unicode(found_store, val)
3672
# First of all, check if the environment can override the configuration
3674
if opt is not None and opt.override_from_env:
3675
value = opt.get_override()
3676
value = expand_and_convert(value)
3678
for store, section in self.iter_sections():
3679
value = section.get(name)
3680
if value is not None:
3683
value = expand_and_convert(value)
3684
if opt is not None and value is None:
3685
# If the option is registered, it may provide a default value
3686
value = opt.get_default()
3687
value = expand_and_convert(value)
3688
for hook in ConfigHooks['get']:
3689
hook(self, name, value)
3692
def expand_options(self, string, env=None):
3693
"""Expand option references in the string in the configuration context.
3695
:param string: The string containing option(s) to expand.
3697
:param env: An option dict defining additional configuration options or
3698
overriding existing ones.
3700
:returns: The expanded string.
3702
return self._expand_options_in_string(string, env)
3704
def _expand_options_in_string(self, string, env=None, _refs=None):
3705
"""Expand options in the string in the configuration context.
3707
:param string: The string to be expanded.
3709
:param env: An option dict defining additional configuration options or
3710
overriding existing ones.
3712
:param _refs: Private list (FIFO) containing the options being expanded
3715
:returns: The expanded string.
3718
# Not much to expand there
3721
# What references are currently resolved (to detect loops)
3724
# We need to iterate until no more refs appear ({{foo}} will need two
3725
# iterations for example).
3730
for is_ref, chunk in iter_option_refs(result):
3732
chunks.append(chunk)
3737
raise errors.OptionExpansionLoop(string, _refs)
3739
value = self._expand_option(name, env, _refs)
3741
raise errors.ExpandingUnknownOption(name, string)
3742
chunks.append(value)
3744
result = ''.join(chunks)
3747
def _expand_option(self, name, env, _refs):
3748
if env is not None and name in env:
3749
# Special case, values provided in env takes precedence over
3753
value = self.get(name, expand=False, convert=False)
3754
value = self._expand_options_in_string(value, env, _refs)
3757
def _get_mutable_section(self):
3758
"""Get the MutableSection for the Stack.
3760
This is where we guarantee that the mutable section is lazily loaded:
3761
this means we won't load the corresponding store before setting a value
3762
or deleting an option. In practice the store will often be loaded but
3763
this helps catching some programming errors.
3766
section = store.get_mutable_section(self.mutable_section_id)
3767
return store, section
3769
def set(self, name, value):
3770
"""Set a new value for the option."""
3771
store, section = self._get_mutable_section()
3772
section.set(name, store.quote(value))
3773
for hook in ConfigHooks['set']:
3774
hook(self, name, value)
3776
def remove(self, name):
3777
"""Remove an existing option."""
3778
_, section = self._get_mutable_section()
3779
section.remove(name)
3780
for hook in ConfigHooks['remove']:
3784
# Mostly for debugging use
3785
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3787
def _get_overrides(self):
3788
# FIXME: Hack around library_state.initialize never called
3789
if breezy.global_state is not None:
3790
return breezy.global_state.cmdline_overrides.get_sections()
3793
def get_shared_store(self, store, state=None):
3794
"""Get a known shared store.
3796
Store urls uniquely identify them and are used to ensure a single copy
3797
is shared across all users.
3799
:param store: The store known to the caller.
3801
:param state: The library state where the known stores are kept.
3803
:returns: The store received if it's not a known one, an already known
3807
state = breezy.global_state
3809
global _shared_stores_at_exit_installed
3810
stores = _shared_stores
3811
def save_config_changes():
3812
for k, store in stores.items():
3813
store.save_changes()
3814
if not _shared_stores_at_exit_installed:
3815
# FIXME: Ugly hack waiting for library_state to always be
3816
# available. -- vila 20120731
3818
atexit.register(save_config_changes)
3819
_shared_stores_at_exit_installed = True
3821
stores = state.config_stores
3822
url = store.external_url()
3830
class MemoryStack(Stack):
3831
"""A configuration stack defined from a string.
3833
This is mainly intended for tests and requires no disk resources.
3836
def __init__(self, content=None):
3837
"""Create an in-memory stack from a given content.
3839
It uses a single store based on configobj and support reading and
3842
:param content: The initial content of the store. If None, the store is
3843
not loaded and ``_load_from_string`` can and should be used if
3846
store = IniFileStore()
3847
if content is not None:
3848
store._load_from_string(content)
3849
super(MemoryStack, self).__init__(
3850
[store.get_sections], store)
3853
class _CompatibleStack(Stack):
3854
"""Place holder for compatibility with previous design.
3856
This is intended to ease the transition from the Config-based design to the
3857
Stack-based design and should not be used nor relied upon by plugins.
3859
One assumption made here is that the daughter classes will all use Stores
3860
derived from LockableIniFileStore).
3862
It implements set() and remove () by re-loading the store before applying
3863
the modification and saving it.
3865
The long term plan being to implement a single write by store to save
3866
all modifications, this class should not be used in the interim.
3869
def set(self, name, value):
3872
super(_CompatibleStack, self).set(name, value)
3873
# Force a write to persistent storage
3876
def remove(self, name):
3879
super(_CompatibleStack, self).remove(name)
3880
# Force a write to persistent storage
3884
class GlobalStack(Stack):
3885
"""Global options only stack.
3887
The following sections are queried:
3889
* command-line overrides,
3891
* the 'DEFAULT' section in bazaar.conf
3893
This stack will use the ``DEFAULT`` section in bazaar.conf as its
3898
gstore = self.get_shared_store(GlobalStore())
3899
super(GlobalStack, self).__init__(
3900
[self._get_overrides,
3901
NameMatcher(gstore, 'DEFAULT').get_sections],
3902
gstore, mutable_section_id='DEFAULT')
3905
class LocationStack(Stack):
3906
"""Per-location options falling back to global options stack.
3909
The following sections are queried:
3911
* command-line overrides,
3913
* the sections matching ``location`` in ``locations.conf``, the order being
3914
defined by the number of path components in the section glob, higher
3915
numbers first (from most specific section to most generic).
3917
* the 'DEFAULT' section in bazaar.conf
3919
This stack will use the ``location`` section in locations.conf as its
3923
def __init__(self, location):
3924
"""Make a new stack for a location and global configuration.
3926
:param location: A URL prefix to """
3927
lstore = self.get_shared_store(LocationStore())
3928
if location.startswith('file://'):
3929
location = urlutils.local_path_from_url(location)
3930
gstore = self.get_shared_store(GlobalStore())
3931
super(LocationStack, self).__init__(
3932
[self._get_overrides,
3933
LocationMatcher(lstore, location).get_sections,
3934
NameMatcher(gstore, 'DEFAULT').get_sections],
3935
lstore, mutable_section_id=location)
3938
class BranchStack(Stack):
3939
"""Per-location options falling back to branch then global options stack.
3941
The following sections are queried:
3943
* command-line overrides,
3945
* the sections matching ``location`` in ``locations.conf``, the order being
3946
defined by the number of path components in the section glob, higher
3947
numbers first (from most specific section to most generic),
3949
* the no-name section in branch.conf,
3951
* the ``DEFAULT`` section in ``bazaar.conf``.
3953
This stack will use the no-name section in ``branch.conf`` as its
3957
def __init__(self, branch):
3958
lstore = self.get_shared_store(LocationStore())
3959
bstore = branch._get_config_store()
3960
gstore = self.get_shared_store(GlobalStore())
3961
super(BranchStack, self).__init__(
3962
[self._get_overrides,
3963
LocationMatcher(lstore, branch.base).get_sections,
3964
NameMatcher(bstore, None).get_sections,
3965
NameMatcher(gstore, 'DEFAULT').get_sections],
3967
self.branch = branch
3969
def lock_write(self, token=None):
3970
return self.branch.lock_write(token)
3973
return self.branch.unlock()
3976
def set(self, name, value):
3977
super(BranchStack, self).set(name, value)
3978
# Unlocking the branch will trigger a store.save_changes() so the last
3979
# unlock saves all the changes.
3982
def remove(self, name):
3983
super(BranchStack, self).remove(name)
3984
# Unlocking the branch will trigger a store.save_changes() so the last
3985
# unlock saves all the changes.
3988
class RemoteControlStack(Stack):
3989
"""Remote control-only options stack."""
3991
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
3992
# with the stack used for remote bzr dirs. RemoteControlStack only uses
3993
# control.conf and is used only for stack options.
3995
def __init__(self, bzrdir):
3996
cstore = bzrdir._get_config_store()
3997
super(RemoteControlStack, self).__init__(
3998
[NameMatcher(cstore, None).get_sections],
4000
self.controldir = bzrdir
4003
class BranchOnlyStack(Stack):
4004
"""Branch-only options stack."""
4006
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
4007
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
4008
# -- vila 2011-12-16
4010
def __init__(self, branch):
4011
bstore = branch._get_config_store()
4012
super(BranchOnlyStack, self).__init__(
4013
[NameMatcher(bstore, None).get_sections],
4015
self.branch = branch
4017
def lock_write(self, token=None):
4018
return self.branch.lock_write(token)
4021
return self.branch.unlock()
4024
def set(self, name, value):
4025
super(BranchOnlyStack, self).set(name, value)
4026
# Force a write to persistent storage
4027
self.store.save_changes()
4030
def remove(self, name):
4031
super(BranchOnlyStack, self).remove(name)
4032
# Force a write to persistent storage
4033
self.store.save_changes()
4036
class cmd_config(commands.Command):
4037
__doc__ = """Display, set or remove a configuration option.
4039
Display the active value for option NAME.
4041
If --all is specified, NAME is interpreted as a regular expression and all
4042
matching options are displayed mentioning their scope and without resolving
4043
option references in the value). The active value that bzr will take into
4044
account is the first one displayed for each option.
4046
If NAME is not given, --all .* is implied (all options are displayed for the
4049
Setting a value is achieved by using NAME=value without spaces. The value
4050
is set in the most relevant scope and can be checked by displaying the
4053
Removing a value is achieved by using --remove NAME.
4056
takes_args = ['name?']
4060
# FIXME: This should be a registry option so that plugins can register
4061
# their own config files (or not) and will also address
4062
# http://pad.lv/788991 -- vila 20101115
4063
commands.Option('scope', help='Reduce the scope to the specified'
4064
' configuration file.',
4066
commands.Option('all',
4067
help='Display all the defined values for the matching options.',
4069
commands.Option('remove', help='Remove the option from'
4070
' the configuration file.'),
4073
_see_also = ['configuration']
4075
@commands.display_command
4076
def run(self, name=None, all=False, directory=None, scope=None,
4078
if directory is None:
4080
directory = directory_service.directories.dereference(directory)
4081
directory = urlutils.normalize_url(directory)
4083
raise errors.BzrError(
4084
'--all and --remove are mutually exclusive.')
4086
# Delete the option in the given scope
4087
self._remove_config_option(name, directory, scope)
4089
# Defaults to all options
4090
self._show_matching_options('.*', directory, scope)
4093
name, value = name.split('=', 1)
4095
# Display the option(s) value(s)
4097
self._show_matching_options(name, directory, scope)
4099
self._show_value(name, directory, scope)
4102
raise errors.BzrError(
4103
'Only one option can be set.')
4104
# Set the option value
4105
self._set_config_option(name, value, directory, scope)
4107
def _get_stack(self, directory, scope=None, write_access=False):
4108
"""Get the configuration stack specified by ``directory`` and ``scope``.
4110
:param directory: Where the configurations are derived from.
4112
:param scope: A specific config to start from.
4114
:param write_access: Whether a write access to the stack will be
4117
# FIXME: scope should allow access to plugin-specific stacks (even
4118
# reduced to the plugin-specific store), related to
4119
# http://pad.lv/788991 -- vila 2011-11-15
4120
if scope is not None:
4121
if scope == 'bazaar':
4122
return GlobalStack()
4123
elif scope == 'locations':
4124
return LocationStack(directory)
4125
elif scope == 'branch':
4127
controldir.ControlDir.open_containing_tree_or_branch(
4130
self.add_cleanup(br.lock_write().unlock)
4131
return br.get_config_stack()
4132
raise errors.NoSuchConfig(scope)
4136
controldir.ControlDir.open_containing_tree_or_branch(
4139
self.add_cleanup(br.lock_write().unlock)
4140
return br.get_config_stack()
4141
except errors.NotBranchError:
4142
return LocationStack(directory)
4144
def _quote_multiline(self, value):
4146
value = '"""' + value + '"""'
4149
def _show_value(self, name, directory, scope):
4150
conf = self._get_stack(directory, scope)
4151
value = conf.get(name, expand=True, convert=False)
4152
if value is not None:
4153
# Quote the value appropriately
4154
value = self._quote_multiline(value)
4155
self.outf.write('%s\n' % (value,))
4157
raise errors.NoSuchConfigOption(name)
4159
def _show_matching_options(self, name, directory, scope):
4160
name = lazy_regex.lazy_compile(name)
4161
# We want any error in the regexp to be raised *now* so we need to
4162
# avoid the delay introduced by the lazy regexp. But, we still do
4163
# want the nicer errors raised by lazy_regex.
4164
name._compile_and_collapse()
4167
conf = self._get_stack(directory, scope)
4168
for store, section in conf.iter_sections():
4169
for oname in section.iter_option_names():
4170
if name.search(oname):
4171
if cur_store_id != store.id:
4172
# Explain where the options are defined
4173
self.outf.write('%s:\n' % (store.id,))
4174
cur_store_id = store.id
4176
if (section.id is not None and cur_section != section.id):
4177
# Display the section id as it appears in the store
4178
# (None doesn't appear by definition)
4179
self.outf.write(' [%s]\n' % (section.id,))
4180
cur_section = section.id
4181
value = section.get(oname, expand=False)
4182
# Quote the value appropriately
4183
value = self._quote_multiline(value)
4184
self.outf.write(' %s = %s\n' % (oname, value))
4186
def _set_config_option(self, name, value, directory, scope):
4187
conf = self._get_stack(directory, scope, write_access=True)
4188
conf.set(name, value)
4189
# Explicitly save the changes
4190
conf.store.save_changes()
4192
def _remove_config_option(self, name, directory, scope):
4194
raise errors.BzrCommandError(
4195
'--remove expects an option to remove.')
4196
conf = self._get_stack(directory, scope, write_access=True)
4199
# Explicitly save the changes
4200
conf.store.save_changes()
4202
raise errors.NoSuchConfigOption(name)
4207
# We need adapters that can build a Store or a Stack in a test context. Test
4208
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4209
# themselves. The builder will receive a test instance and should return a
4210
# ready-to-use store or stack. Plugins that define new store/stacks can also
4211
# register themselves here to be tested against the tests defined in
4212
# breezy.tests.test_config. Note that the builder can be called multiple times
4213
# for the same test.
4215
# The registered object should be a callable receiving a test instance
4216
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4218
test_store_builder_registry = registry.Registry()
4220
# The registered object should be a callable receiving a test instance
4221
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4223
test_stack_builder_registry = registry.Registry()