1508
2257
configobj[name] = value
1510
2259
configobj.setdefault(section, {})[name] = value
2260
for hook in OldConfigHooks['set']:
2261
hook(self, name, value)
2262
self._set_configobj(configobj)
2264
def remove_option(self, option_name, section_name=None):
2265
configobj = self._get_configobj()
2266
if section_name is None:
2267
del configobj[option_name]
2269
del configobj[section_name][option_name]
2270
for hook in OldConfigHooks['remove']:
2271
hook(self, option_name)
1511
2272
self._set_configobj(configobj)
1513
2274
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2276
f = BytesIO(self._transport.get_bytes(self._filename))
2277
for hook in OldConfigHooks['load']:
1516
2280
except errors.NoSuchFile:
2282
except errors.PermissionDenied as e:
2283
trace.warning("Permission denied while trying to open "
2284
"configuration file %s.", urlutils.unescape_for_display(
2285
urlutils.join(self._transport.base, self._filename), "utf-8"))
2288
def _external_url(self):
2289
return urlutils.join(self._transport.external_url(), self._filename)
1519
2291
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2292
f = self._get_config_file()
2295
conf = ConfigObj(f, encoding='utf-8')
2296
except configobj.ConfigObjError as e:
2297
raise ParseConfigError(e.errors, self._external_url())
2298
except UnicodeDecodeError:
2299
raise ConfigContentError(self._external_url())
1522
2304
def _set_configobj(self, configobj):
1523
out_file = StringIO()
2305
out_file = BytesIO()
1524
2306
configobj.write(out_file)
1525
2307
out_file.seek(0)
1526
2308
self._transport.put_file(self._filename, out_file)
2309
for hook in OldConfigHooks['save']:
2313
class Option(object):
2314
"""An option definition.
2316
The option *values* are stored in config files and found in sections.
2318
Here we define various properties about the option itself, its default
2319
value, how to convert it from stores, what to do when invalid values are
2320
encoutered, in which config files it can be stored.
2323
def __init__(self, name, override_from_env=None,
2324
default=None, default_from_env=None,
2325
help=None, from_unicode=None, invalid=None, unquote=True):
2326
"""Build an option definition.
2328
:param name: the name used to refer to the option.
2330
:param override_from_env: A list of environment variables which can
2331
provide override any configuration setting.
2333
:param default: the default value to use when none exist in the config
2334
stores. This is either a string that ``from_unicode`` will convert
2335
into the proper type, a callable returning a unicode string so that
2336
``from_unicode`` can be used on the return value, or a python
2337
object that can be stringified (so only the empty list is supported
2340
:param default_from_env: A list of environment variables which can
2341
provide a default value. 'default' will be used only if none of the
2342
variables specified here are set in the environment.
2344
:param help: a doc string to explain the option to the user.
2346
:param from_unicode: a callable to convert the unicode string
2347
representing the option value in a store or its default value.
2349
:param invalid: the action to be taken when an invalid value is
2350
encountered in a store. This is called only when from_unicode is
2351
invoked to convert a string and returns None or raise ValueError or
2352
TypeError. Accepted values are: None (ignore invalid values),
2353
'warning' (emit a warning), 'error' (emit an error message and
2356
:param unquote: should the unicode value be unquoted before conversion.
2357
This should be used only when the store providing the values cannot
2358
safely unquote them (see http://pad.lv/906897). It is provided so
2359
daughter classes can handle the quoting themselves.
2361
if override_from_env is None:
2362
override_from_env = []
2363
if default_from_env is None:
2364
default_from_env = []
2366
self.override_from_env = override_from_env
2367
# Convert the default value to a unicode string so all values are
2368
# strings internally before conversion (via from_unicode) is attempted.
2371
elif isinstance(default, list):
2372
# Only the empty list is supported
2374
raise AssertionError(
2375
'Only empty lists are supported as default values')
2377
elif isinstance(default, (binary_type, text_type, bool, int, float)):
2378
# Rely on python to convert strings, booleans and integers
2379
self.default = u'%s' % (default,)
2380
elif callable(default):
2381
self.default = default
2383
# other python objects are not expected
2384
raise AssertionError('%r is not supported as a default value'
2386
self.default_from_env = default_from_env
2388
self.from_unicode = from_unicode
2389
self.unquote = unquote
2390
if invalid and invalid not in ('warning', 'error'):
2391
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2392
self.invalid = invalid
2398
def convert_from_unicode(self, store, unicode_value):
2399
if self.unquote and store is not None and unicode_value is not None:
2400
unicode_value = store.unquote(unicode_value)
2401
if self.from_unicode is None or unicode_value is None:
2402
# Don't convert or nothing to convert
2403
return unicode_value
2405
converted = self.from_unicode(unicode_value)
2406
except (ValueError, TypeError):
2407
# Invalid values are ignored
2409
if converted is None and self.invalid is not None:
2410
# The conversion failed
2411
if self.invalid == 'warning':
2412
trace.warning('Value "%s" is not valid for "%s"',
2413
unicode_value, self.name)
2414
elif self.invalid == 'error':
2415
raise ConfigOptionValueError(self.name, unicode_value)
2418
def get_override(self):
2420
for var in self.override_from_env:
2422
# If the env variable is defined, its value takes precedence
2423
value = os.environ[var]
2425
value = value.decode(osutils.get_user_encoding())
2431
def get_default(self):
2433
for var in self.default_from_env:
2435
# If the env variable is defined, its value is the default one
2436
value = os.environ[var]
2438
value = value.decode(osutils.get_user_encoding())
2443
# Otherwise, fallback to the value defined at registration
2444
if callable(self.default):
2445
value = self.default()
2446
if not isinstance(value, text_type):
2447
raise AssertionError(
2448
"Callable default value for '%s' should be unicode"
2451
value = self.default
2454
def get_help_topic(self):
2457
def get_help_text(self, additional_see_also=None, plain=True):
2459
from breezy import help_topics
2460
result += help_topics._format_see_also(additional_see_also)
2462
result = help_topics.help_as_plain_text(result)
2466
# Predefined converters to get proper values from store
2468
def bool_from_store(unicode_str):
2469
return ui.bool_from_string(unicode_str)
2472
def int_from_store(unicode_str):
2473
return int(unicode_str)
2476
_unit_suffixes = dict(K=10**3, M=10**6, G=10**9)
2478
def int_SI_from_store(unicode_str):
2479
"""Convert a human readable size in SI units, e.g 10MB into an integer.
2481
Accepted suffixes are K,M,G. It is case-insensitive and may be followed
2482
by a trailing b (i.e. Kb, MB). This is intended to be practical and not
2485
:return Integer, expanded to its base-10 value if a proper SI unit is
2486
found, None otherwise.
2488
regexp = "^(\\d+)(([" + ''.join(_unit_suffixes) + "])b?)?$"
2489
p = re.compile(regexp, re.IGNORECASE)
2490
m = p.match(unicode_str)
2493
val, _, unit = m.groups()
2497
coeff = _unit_suffixes[unit.upper()]
2499
raise ValueError(gettext('{0} is not an SI unit.').format(unit))
2504
def float_from_store(unicode_str):
2505
return float(unicode_str)
2508
# Use an empty dict to initialize an empty configobj avoiding all parsing and
2510
_list_converter_config = configobj.ConfigObj(
2511
{}, encoding='utf-8', list_values=True, interpolation=False)
2514
class ListOption(Option):
2516
def __init__(self, name, default=None, default_from_env=None,
2517
help=None, invalid=None):
2518
"""A list Option definition.
2520
This overrides the base class so the conversion from a unicode string
2521
can take quoting into account.
2523
super(ListOption, self).__init__(
2524
name, default=default, default_from_env=default_from_env,
2525
from_unicode=self.from_unicode, help=help,
2526
invalid=invalid, unquote=False)
2528
def from_unicode(self, unicode_str):
2529
if not isinstance(unicode_str, string_types):
2531
# Now inject our string directly as unicode. All callers got their
2532
# value from configobj, so values that need to be quoted are already
2534
_list_converter_config.reset()
2535
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2536
maybe_list = _list_converter_config['list']
2537
if isinstance(maybe_list, string_types):
2539
# A single value, most probably the user forgot (or didn't care
2540
# to add) the final ','
2543
# The empty string, convert to empty list
2546
# We rely on ConfigObj providing us with a list already
2551
class RegistryOption(Option):
2552
"""Option for a choice from a registry."""
2554
def __init__(self, name, registry, default_from_env=None,
2555
help=None, invalid=None):
2556
"""A registry based Option definition.
2558
This overrides the base class so the conversion from a unicode string
2559
can take quoting into account.
2561
super(RegistryOption, self).__init__(
2562
name, default=lambda: registry.default_key,
2563
default_from_env=default_from_env,
2564
from_unicode=self.from_unicode, help=help,
2565
invalid=invalid, unquote=False)
2566
self.registry = registry
2568
def from_unicode(self, unicode_str):
2569
if not isinstance(unicode_str, string_types):
2572
return self.registry.get(unicode_str)
2575
"Invalid value %s for %s."
2576
"See help for a list of possible values." % (unicode_str,
2581
ret = [self._help, "\n\nThe following values are supported:\n"]
2582
for key in self.registry.keys():
2583
ret.append(" %s - %s\n" % (key, self.registry.get_help(key)))
2587
_option_ref_re = lazy_regex.lazy_compile('({[^\\d\\W](?:\\.\\w|-\\w|\\w)*})')
2588
"""Describes an expandable option reference.
2590
We want to match the most embedded reference first.
2592
I.e. for '{{foo}}' we will get '{foo}',
2593
for '{bar{baz}}' we will get '{baz}'
2596
def iter_option_refs(string):
2597
# Split isolate refs so every other chunk is a ref
2599
for chunk in _option_ref_re.split(string):
2604
class OptionRegistry(registry.Registry):
2605
"""Register config options by their name.
2607
This overrides ``registry.Registry`` to simplify registration by acquiring
2608
some information from the option object itself.
2611
def _check_option_name(self, option_name):
2612
"""Ensures an option name is valid.
2614
:param option_name: The name to validate.
2616
if _option_ref_re.match('{%s}' % option_name) is None:
2617
raise IllegalOptionName(option_name)
2619
def register(self, option):
2620
"""Register a new option to its name.
2622
:param option: The option to register. Its name is used as the key.
2624
self._check_option_name(option.name)
2625
super(OptionRegistry, self).register(option.name, option,
2628
def register_lazy(self, key, module_name, member_name):
2629
"""Register a new option to be loaded on request.
2631
:param key: the key to request the option later. Since the registration
2632
is lazy, it should be provided and match the option name.
2634
:param module_name: the python path to the module. Such as 'os.path'.
2636
:param member_name: the member of the module to return. If empty or
2637
None, get() will return the module itself.
2639
self._check_option_name(key)
2640
super(OptionRegistry, self).register_lazy(key,
2641
module_name, member_name)
2643
def get_help(self, key=None):
2644
"""Get the help text associated with the given key"""
2645
option = self.get(key)
2646
the_help = option.help
2647
if callable(the_help):
2648
return the_help(self, key)
2652
option_registry = OptionRegistry()
2655
# Registered options in lexicographical order
2657
option_registry.register(
2658
Option('append_revisions_only',
2659
default=None, from_unicode=bool_from_store, invalid='warning',
2661
Whether to only append revisions to the mainline.
2663
If this is set to true, then it is not possible to change the
2664
existing mainline of the branch.
2666
option_registry.register(
2667
ListOption('acceptable_keys',
2670
List of GPG key patterns which are acceptable for verification.
2672
option_registry.register(
2673
Option('add.maximum_file_size',
2674
default=u'20MB', from_unicode=int_SI_from_store,
2676
Size above which files should be added manually.
2678
Files below this size are added automatically when using ``bzr add`` without
2681
A negative value means disable the size check.
2683
option_registry.register(
2685
default=None, from_unicode=bool_from_store,
2687
Is the branch bound to ``bound_location``.
2689
If set to "True", the branch should act as a checkout, and push each commit to
2690
the bound_location. This option is normally set by ``bind``/``unbind``.
2692
See also: bound_location.
2694
option_registry.register(
2695
Option('bound_location',
2698
The location that commits should go to when acting as a checkout.
2700
This option is normally set by ``bind``.
2704
option_registry.register(
2705
Option('branch.fetch_tags', default=False, from_unicode=bool_from_store,
2707
Whether revisions associated with tags should be fetched.
2709
option_registry.register_lazy(
2710
'transform.orphan_policy', 'breezy.transform', 'opt_transform_orphan')
2711
option_registry.register(
2712
Option('bzr.workingtree.worth_saving_limit', default=10,
2713
from_unicode=int_from_store, invalid='warning',
2715
How many changes before saving the dirstate.
2717
-1 means that we will never rewrite the dirstate file for only
2718
stat-cache changes. Regardless of this setting, we will always rewrite
2719
the dirstate file if a file is added/removed/renamed/etc. This flag only
2720
affects the behavior of updating the dirstate file after we notice that
2721
a file has been touched.
2723
option_registry.register(
2724
Option('bugtracker', default=None,
2726
Default bug tracker to use.
2728
This bug tracker will be used for example when marking bugs
2729
as fixed using ``bzr commit --fixes``, if no explicit
2730
bug tracker was specified.
2732
option_registry.register(
2733
Option('check_signatures', default=CHECK_IF_POSSIBLE,
2734
from_unicode=signature_policy_from_unicode,
2736
GPG checking policy.
2738
Possible values: require, ignore, check-available (default)
2740
this option will control whether bzr will require good gpg
2741
signatures, ignore them, or check them if they are
2744
option_registry.register(
2745
Option('child_submit_format',
2746
help='''The preferred format of submissions to this branch.'''))
2747
option_registry.register(
2748
Option('child_submit_to',
2749
help='''Where submissions to this branch are mailed to.'''))
2750
option_registry.register(
2751
Option('create_signatures', default=SIGN_WHEN_REQUIRED,
2752
from_unicode=signing_policy_from_unicode,
2756
Possible values: always, never, when-required (default)
2758
This option controls whether bzr will always create
2759
gpg signatures or not on commits.
2761
option_registry.register(
2762
Option('dirstate.fdatasync', default=True,
2763
from_unicode=bool_from_store,
2765
Flush dirstate changes onto physical disk?
2767
If true (default), working tree metadata changes are flushed through the
2768
OS buffers to physical disk. This is somewhat slower, but means data
2769
should not be lost if the machine crashes. See also repository.fdatasync.
2771
option_registry.register(
2772
ListOption('debug_flags', default=[],
2773
help='Debug flags to activate.'))
2774
option_registry.register(
2775
Option('default_format', default='2a',
2776
help='Format used when creating branches.'))
2777
option_registry.register(
2778
Option('dpush_strict', default=None,
2779
from_unicode=bool_from_store,
2781
The default value for ``dpush --strict``.
2783
If present, defines the ``--strict`` option default value for checking
2784
uncommitted changes before pushing into a different VCS without any
2785
custom bzr metadata.
2787
option_registry.register(
2789
help='The command called to launch an editor to enter a message.'))
2790
option_registry.register(
2791
Option('email', override_from_env=['BRZ_EMAIL'], default=default_email,
2792
help='The users identity'))
2793
option_registry.register(
2794
Option('gpg_signing_key',
2797
GPG key to use for signing.
2799
This defaults to the first key associated with the users email.
2801
option_registry.register(
2803
help='Language to translate messages into.'))
2804
option_registry.register(
2805
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2807
Steal locks that appears to be dead.
2809
If set to True, bzr will check if a lock is supposed to be held by an
2810
active process from the same user on the same machine. If the user and
2811
machine match, but no process with the given PID is active, then bzr
2812
will automatically break the stale lock, and create a new lock for
2814
Otherwise, bzr will prompt as normal to break the lock.
2816
option_registry.register(
2817
Option('log_format', default='long',
2819
Log format to use when displaying revisions.
2821
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2822
may be provided by plugins.
2824
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2826
option_registry.register(
2827
Option('output_encoding',
2828
help= 'Unicode encoding for output'
2829
' (terminal encoding if not specified).'))
2830
option_registry.register(
2831
Option('parent_location',
2834
The location of the default branch for pull or merge.
2836
This option is normally set when creating a branch, the first ``pull`` or by
2837
``pull --remember``.
2839
option_registry.register(
2840
Option('post_commit', default=None,
2842
Post commit functions.
2844
An ordered list of python functions to call, separated by spaces.
2846
Each function takes branch, rev_id as parameters.
2848
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2850
option_registry.register(
2851
Option('public_branch',
2854
A publically-accessible version of this branch.
2856
This implies that the branch setting this option is not publically-accessible.
2857
Used and set by ``bzr send``.
2859
option_registry.register(
2860
Option('push_location',
2863
The location of the default branch for push.
2865
This option is normally set by the first ``push`` or ``push --remember``.
2867
option_registry.register(
2868
Option('push_strict', default=None,
2869
from_unicode=bool_from_store,
2871
The default value for ``push --strict``.
2873
If present, defines the ``--strict`` option default value for checking
2874
uncommitted changes before sending a merge directive.
2876
option_registry.register(
2877
Option('repository.fdatasync', default=True,
2878
from_unicode=bool_from_store,
2880
Flush repository changes onto physical disk?
2882
If true (default), repository changes are flushed through the OS buffers
2883
to physical disk. This is somewhat slower, but means data should not be
2884
lost if the machine crashes. See also dirstate.fdatasync.
2886
option_registry.register_lazy('smtp_server',
2887
'breezy.smtp_connection', 'smtp_server')
2888
option_registry.register_lazy('smtp_password',
2889
'breezy.smtp_connection', 'smtp_password')
2890
option_registry.register_lazy('smtp_username',
2891
'breezy.smtp_connection', 'smtp_username')
2892
option_registry.register(
2893
Option('selftest.timeout',
2895
from_unicode=int_from_store,
2896
help='Abort selftest if one test takes longer than this many seconds',
2899
option_registry.register(
2900
Option('send_strict', default=None,
2901
from_unicode=bool_from_store,
2903
The default value for ``send --strict``.
2905
If present, defines the ``--strict`` option default value for checking
2906
uncommitted changes before sending a bundle.
2909
option_registry.register(
2910
Option('serve.client_timeout',
2911
default=300.0, from_unicode=float_from_store,
2912
help="If we wait for a new request from a client for more than"
2913
" X seconds, consider the client idle, and hangup."))
2914
option_registry.register(
2915
Option('stacked_on_location',
2917
help="""The location where this branch is stacked on."""))
2918
option_registry.register(
2919
Option('submit_branch',
2922
The branch you intend to submit your current work to.
2924
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2925
by the ``submit:`` revision spec.
2927
option_registry.register(
2929
help='''Where submissions from this branch are mailed to.'''))
2930
option_registry.register(
2931
ListOption('suppress_warnings',
2933
help="List of warning classes to suppress."))
2934
option_registry.register(
2935
Option('validate_signatures_in_log', default=False,
2936
from_unicode=bool_from_store, invalid='warning',
2937
help='''Whether to validate signatures in brz log.'''))
2938
option_registry.register_lazy('ssl.ca_certs',
2939
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_ca_certs')
2941
option_registry.register_lazy('ssl.cert_reqs',
2942
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_cert_reqs')
2945
class Section(object):
2946
"""A section defines a dict of option name => value.
2948
This is merely a read-only dict which can add some knowledge about the
2949
options. It is *not* a python dict object though and doesn't try to mimic
2953
def __init__(self, section_id, options):
2954
self.id = section_id
2955
# We re-use the dict-like object received
2956
self.options = options
2958
def get(self, name, default=None, expand=True):
2959
return self.options.get(name, default)
2961
def iter_option_names(self):
2962
for k in self.options.keys():
2966
# Mostly for debugging use
2967
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2970
_NewlyCreatedOption = object()
2971
"""Was the option created during the MutableSection lifetime"""
2972
_DeletedOption = object()
2973
"""Was the option deleted during the MutableSection lifetime"""
2976
class MutableSection(Section):
2977
"""A section allowing changes and keeping track of the original values."""
2979
def __init__(self, section_id, options):
2980
super(MutableSection, self).__init__(section_id, options)
2981
self.reset_changes()
2983
def set(self, name, value):
2984
if name not in self.options:
2985
# This is a new option
2986
self.orig[name] = _NewlyCreatedOption
2987
elif name not in self.orig:
2988
self.orig[name] = self.get(name, None)
2989
self.options[name] = value
2991
def remove(self, name):
2992
if name not in self.orig and name in self.options:
2993
self.orig[name] = self.get(name, None)
2994
del self.options[name]
2996
def reset_changes(self):
2999
def apply_changes(self, dirty, store):
3000
"""Apply option value changes.
3002
``self`` has been reloaded from the persistent storage. ``dirty``
3003
contains the changes made since the previous loading.
3005
:param dirty: the mutable section containing the changes.
3007
:param store: the store containing the section
3009
for k, expected in dirty.orig.items():
3010
actual = dirty.get(k, _DeletedOption)
3011
reloaded = self.get(k, _NewlyCreatedOption)
3012
if actual is _DeletedOption:
3013
if k in self.options:
3017
# Report concurrent updates in an ad-hoc way. This should only
3018
# occurs when different processes try to update the same option
3019
# which is not supported (as in: the config framework is not meant
3020
# to be used as a sharing mechanism).
3021
if expected != reloaded:
3022
if actual is _DeletedOption:
3023
actual = '<DELETED>'
3024
if reloaded is _NewlyCreatedOption:
3025
reloaded = '<CREATED>'
3026
if expected is _NewlyCreatedOption:
3027
expected = '<CREATED>'
3028
# Someone changed the value since we get it from the persistent
3030
trace.warning(gettext(
3031
"Option {0} in section {1} of {2} was changed"
3032
" from {3} to {4}. The {5} value will be saved.".format(
3033
k, self.id, store.external_url(), expected,
3035
# No need to keep track of these changes
3036
self.reset_changes()
3039
class Store(object):
3040
"""Abstract interface to persistent storage for configuration options."""
3042
readonly_section_class = Section
3043
mutable_section_class = MutableSection
3046
# Which sections need to be saved (by section id). We use a dict here
3047
# so the dirty sections can be shared by multiple callers.
3048
self.dirty_sections = {}
3050
def is_loaded(self):
3051
"""Returns True if the Store has been loaded.
3053
This is used to implement lazy loading and ensure the persistent
3054
storage is queried only when needed.
3056
raise NotImplementedError(self.is_loaded)
3059
"""Loads the Store from persistent storage."""
3060
raise NotImplementedError(self.load)
3062
def _load_from_string(self, bytes):
3063
"""Create a store from a string in configobj syntax.
3065
:param bytes: A string representing the file content.
3067
raise NotImplementedError(self._load_from_string)
3070
"""Unloads the Store.
3072
This should make is_loaded() return False. This is used when the caller
3073
knows that the persistent storage has changed or may have change since
3076
raise NotImplementedError(self.unload)
3078
def quote(self, value):
3079
"""Quote a configuration option value for storing purposes.
3081
This allows Stacks to present values as they will be stored.
3085
def unquote(self, value):
3086
"""Unquote a configuration option value into unicode.
3088
The received value is quoted as stored.
3093
"""Saves the Store to persistent storage."""
3094
raise NotImplementedError(self.save)
3096
def _need_saving(self):
3097
for s in self.dirty_sections.values():
3099
# At least one dirty section contains a modification
3103
def apply_changes(self, dirty_sections):
3104
"""Apply changes from dirty sections while checking for coherency.
3106
The Store content is discarded and reloaded from persistent storage to
3107
acquire up-to-date values.
3109
Dirty sections are MutableSection which kept track of the value they
3110
are expected to update.
3112
# We need an up-to-date version from the persistent storage, unload the
3113
# store. The reload will occur when needed (triggered by the first
3114
# get_mutable_section() call below.
3116
# Apply the changes from the preserved dirty sections
3117
for section_id, dirty in dirty_sections.items():
3118
clean = self.get_mutable_section(section_id)
3119
clean.apply_changes(dirty, self)
3120
# Everything is clean now
3121
self.dirty_sections = {}
3123
def save_changes(self):
3124
"""Saves the Store to persistent storage if changes occurred.
3126
Apply the changes recorded in the mutable sections to a store content
3127
refreshed from persistent storage.
3129
raise NotImplementedError(self.save_changes)
3131
def external_url(self):
3132
raise NotImplementedError(self.external_url)
3134
def get_sections(self):
3135
"""Returns an ordered iterable of existing sections.
3137
:returns: An iterable of (store, section).
3139
raise NotImplementedError(self.get_sections)
3141
def get_mutable_section(self, section_id=None):
3142
"""Returns the specified mutable section.
3144
:param section_id: The section identifier
3146
raise NotImplementedError(self.get_mutable_section)
3149
# Mostly for debugging use
3150
return "<config.%s(%s)>" % (self.__class__.__name__,
3151
self.external_url())
3154
class CommandLineStore(Store):
3155
"A store to carry command line overrides for the config options."""
3157
def __init__(self, opts=None):
3158
super(CommandLineStore, self).__init__()
3165
# The dict should be cleared but not replaced so it can be shared.
3166
self.options.clear()
3168
def _from_cmdline(self, overrides):
3169
# Reset before accepting new definitions
3171
for over in overrides:
3173
name, value = over.split('=', 1)
3175
raise errors.BzrCommandError(
3176
gettext("Invalid '%s', should be of the form 'name=value'")
3178
self.options[name] = value
3180
def external_url(self):
3181
# Not an url but it makes debugging easier and is never needed
3185
def get_sections(self):
3186
yield self, self.readonly_section_class(None, self.options)
3189
class IniFileStore(Store):
3190
"""A config Store using ConfigObj for storage.
3192
:ivar _config_obj: Private member to hold the ConfigObj instance used to
3193
serialize/deserialize the config file.
3197
"""A config Store using ConfigObj for storage.
3199
super(IniFileStore, self).__init__()
3200
self._config_obj = None
3202
def is_loaded(self):
3203
return self._config_obj != None
3206
self._config_obj = None
3207
self.dirty_sections = {}
3209
def _load_content(self):
3210
"""Load the config file bytes.
3212
This should be provided by subclasses
3214
:return: Byte string
3216
raise NotImplementedError(self._load_content)
3218
def _save_content(self, content):
3219
"""Save the config file bytes.
3221
This should be provided by subclasses
3223
:param content: Config file bytes to write
3225
raise NotImplementedError(self._save_content)
3228
"""Load the store from the associated file."""
3229
if self.is_loaded():
3231
content = self._load_content()
3232
self._load_from_string(content)
3233
for hook in ConfigHooks['load']:
3236
def _load_from_string(self, bytes):
3237
"""Create a config store from a string.
3239
:param bytes: A string representing the file content.
3241
if self.is_loaded():
3242
raise AssertionError('Already loaded: %r' % (self._config_obj,))
3243
co_input = BytesIO(bytes)
3245
# The config files are always stored utf8-encoded
3246
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3248
except configobj.ConfigObjError as e:
3249
self._config_obj = None
3250
raise ParseConfigError(e.errors, self.external_url())
3251
except UnicodeDecodeError:
3252
raise ConfigContentError(self.external_url())
3254
def save_changes(self):
3255
if not self.is_loaded():
3258
if not self._need_saving():
3260
# Preserve the current version
3261
dirty_sections = self.dirty_sections.copy()
3262
self.apply_changes(dirty_sections)
3263
# Save to the persistent storage
3267
if not self.is_loaded():
3271
self._config_obj.write(out)
3272
self._save_content(out.getvalue())
3273
for hook in ConfigHooks['save']:
3276
def get_sections(self):
3277
"""Get the configobj section in the file order.
3279
:returns: An iterable of (store, section).
3281
# We need a loaded store
3284
except (errors.NoSuchFile, errors.PermissionDenied):
3285
# If the file can't be read, there is no sections
3287
cobj = self._config_obj
3289
yield self, self.readonly_section_class(None, cobj)
3290
for section_name in cobj.sections:
3292
self.readonly_section_class(section_name,
3293
cobj[section_name]))
3295
def get_mutable_section(self, section_id=None):
3296
# We need a loaded store
3299
except errors.NoSuchFile:
3300
# The file doesn't exist, let's pretend it was empty
3301
self._load_from_string(b'')
3302
if section_id in self.dirty_sections:
3303
# We already created a mutable section for this id
3304
return self.dirty_sections[section_id]
3305
if section_id is None:
3306
section = self._config_obj
3308
section = self._config_obj.setdefault(section_id, {})
3309
mutable_section = self.mutable_section_class(section_id, section)
3310
# All mutable sections can become dirty
3311
self.dirty_sections[section_id] = mutable_section
3312
return mutable_section
3314
def quote(self, value):
3316
# configobj conflates automagical list values and quoting
3317
self._config_obj.list_values = True
3318
return self._config_obj._quote(value)
3320
self._config_obj.list_values = False
3322
def unquote(self, value):
3323
if value and isinstance(value, string_types):
3324
# _unquote doesn't handle None nor empty strings nor anything that
3325
# is not a string, really.
3326
value = self._config_obj._unquote(value)
3329
def external_url(self):
3330
# Since an IniFileStore can be used without a file (at least in tests),
3331
# it's better to provide something than raising a NotImplementedError.
3332
# All daughter classes are supposed to provide an implementation
3334
return 'In-Process Store, no URL'
3337
class TransportIniFileStore(IniFileStore):
3338
"""IniFileStore that loads files from a transport.
3340
:ivar transport: The transport object where the config file is located.
3342
:ivar file_name: The config file basename in the transport directory.
3345
def __init__(self, transport, file_name):
3346
"""A Store using a ini file on a Transport
3348
:param transport: The transport object where the config file is located.
3349
:param file_name: The config file basename in the transport directory.
3351
super(TransportIniFileStore, self).__init__()
3352
self.transport = transport
3353
self.file_name = file_name
3355
def _load_content(self):
3357
return self.transport.get_bytes(self.file_name)
3358
except errors.PermissionDenied:
3359
trace.warning("Permission denied while trying to load "
3360
"configuration store %s.", self.external_url())
3363
def _save_content(self, content):
3364
self.transport.put_bytes(self.file_name, content)
3366
def external_url(self):
3367
# FIXME: external_url should really accepts an optional relpath
3368
# parameter (bug #750169) :-/ -- vila 2011-04-04
3369
# The following will do in the interim but maybe we don't want to
3370
# expose a path here but rather a config ID and its associated
3371
# object </hand wawe>.
3372
return urlutils.join(
3373
self.transport.external_url(), urlutils.escape(self.file_name))
3376
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3377
# unlockable stores for use with objects that can already ensure the locking
3378
# (think branches). If different stores (not based on ConfigObj) are created,
3379
# they may face the same issue.
3382
class LockableIniFileStore(TransportIniFileStore):
3383
"""A ConfigObjStore using locks on save to ensure store integrity."""
3385
def __init__(self, transport, file_name, lock_dir_name=None):
3386
"""A config Store using ConfigObj for storage.
3388
:param transport: The transport object where the config file is located.
3390
:param file_name: The config file basename in the transport directory.
3392
if lock_dir_name is None:
3393
lock_dir_name = 'lock'
3394
self.lock_dir_name = lock_dir_name
3395
super(LockableIniFileStore, self).__init__(transport, file_name)
3396
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3398
def lock_write(self, token=None):
3399
"""Takes a write lock in the directory containing the config file.
3401
If the directory doesn't exist it is created.
3403
# FIXME: This doesn't check the ownership of the created directories as
3404
# ensure_config_dir_exists does. It should if the transport is local
3405
# -- vila 2011-04-06
3406
self.transport.create_prefix()
3407
token = self._lock.lock_write(token)
3408
return lock.LogicalLockResult(self.unlock, token)
3413
def break_lock(self):
3414
self._lock.break_lock()
3417
with self.lock_write():
3418
# We need to be able to override the undecorated implementation
3419
self.save_without_locking()
3421
def save_without_locking(self):
3422
super(LockableIniFileStore, self).save()
3425
# FIXME: global, breezy, shouldn't that be 'user' instead or even
3426
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
3427
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
3429
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
3430
# functions or a registry will make it easier and clearer for tests, focusing
3431
# on the relevant parts of the API that needs testing -- vila 20110503 (based
3432
# on a poolie's remark)
3433
class GlobalStore(LockableIniFileStore):
3434
"""A config store for global options.
3436
There is a single GlobalStore for a given process.
3439
def __init__(self, possible_transports=None):
3440
(path, kind) = _config_dir()
3441
t = transport.get_transport_from_path(
3442
path, possible_transports=possible_transports)
3443
filename = {'bazaar': 'bazaar.conf', 'breezy': 'breezy.conf'}[kind]
3444
super(GlobalStore, self).__init__(t, filename)
3448
class LocationStore(LockableIniFileStore):
3449
"""A config store for options specific to a location.
3451
There is a single LocationStore for a given process.
3454
def __init__(self, possible_transports=None):
3455
t = transport.get_transport_from_path(
3456
config_dir(), possible_transports=possible_transports)
3457
super(LocationStore, self).__init__(t, 'locations.conf')
3458
self.id = 'locations'
3461
class BranchStore(TransportIniFileStore):
3462
"""A config store for branch options.
3464
There is a single BranchStore for a given branch.
3467
def __init__(self, branch):
3468
super(BranchStore, self).__init__(branch.control_transport,
3470
self.branch = branch
3474
class ControlStore(LockableIniFileStore):
3476
def __init__(self, bzrdir):
3477
super(ControlStore, self).__init__(bzrdir.transport,
3479
lock_dir_name='branch_lock')
3483
class SectionMatcher(object):
3484
"""Select sections into a given Store.
3486
This is intended to be used to postpone getting an iterable of sections
3490
def __init__(self, store):
3493
def get_sections(self):
3494
# This is where we require loading the store so we can see all defined
3496
sections = self.store.get_sections()
3497
# Walk the revisions in the order provided
3498
for store, s in sections:
3502
def match(self, section):
3503
"""Does the proposed section match.
3505
:param section: A Section object.
3507
:returns: True if the section matches, False otherwise.
3509
raise NotImplementedError(self.match)
3512
class NameMatcher(SectionMatcher):
3514
def __init__(self, store, section_id):
3515
super(NameMatcher, self).__init__(store)
3516
self.section_id = section_id
3518
def match(self, section):
3519
return section.id == self.section_id
3522
class LocationSection(Section):
3524
def __init__(self, section, extra_path, branch_name=None):
3525
super(LocationSection, self).__init__(section.id, section.options)
3526
self.extra_path = extra_path
3527
if branch_name is None:
3529
self.locals = {'relpath': extra_path,
3530
'basename': urlutils.basename(extra_path),
3531
'branchname': branch_name}
3533
def get(self, name, default=None, expand=True):
3534
value = super(LocationSection, self).get(name, default)
3535
if value is not None and expand:
3536
policy_name = self.get(name + ':policy', None)
3537
policy = _policy_value.get(policy_name, POLICY_NONE)
3538
if policy == POLICY_APPENDPATH:
3539
value = urlutils.join(value, self.extra_path)
3540
# expand section local options right now (since POLICY_APPENDPATH
3541
# will never add options references, it's ok to expand after it).
3543
for is_ref, chunk in iter_option_refs(value):
3545
chunks.append(chunk)
3548
if ref in self.locals:
3549
chunks.append(self.locals[ref])
3551
chunks.append(chunk)
3552
value = ''.join(chunks)
3556
class StartingPathMatcher(SectionMatcher):
3557
"""Select sections for a given location respecting the Store order."""
3559
# FIXME: Both local paths and urls can be used for section names as well as
3560
# ``location`` to stay consistent with ``LocationMatcher`` which itself
3561
# inherited the fuzziness from the previous ``LocationConfig``
3562
# implementation. We probably need to revisit which encoding is allowed for
3563
# both ``location`` and section names and how we normalize
3564
# them. http://pad.lv/85479, http://pad.lv/437009 and http://359320 are
3565
# related too. -- vila 2012-01-04
3567
def __init__(self, store, location):
3568
super(StartingPathMatcher, self).__init__(store)
3569
if location.startswith('file://'):
3570
location = urlutils.local_path_from_url(location)
3571
self.location = location
3573
def get_sections(self):
3574
"""Get all sections matching ``location`` in the store.
3576
The most generic sections are described first in the store, then more
3577
specific ones can be provided for reduced scopes.
3579
The returned section are therefore returned in the reversed order so
3580
the most specific ones can be found first.
3582
location_parts = self.location.rstrip('/').split('/')
3584
# Later sections are more specific, they should be returned first
3585
for _, section in reversed(list(store.get_sections())):
3586
if section.id is None:
3587
# The no-name section is always included if present
3588
yield store, LocationSection(section, self.location)
3590
section_path = section.id
3591
if section_path.startswith('file://'):
3592
# the location is already a local path or URL, convert the
3593
# section id to the same format
3594
section_path = urlutils.local_path_from_url(section_path)
3595
if (self.location.startswith(section_path)
3596
or fnmatch.fnmatch(self.location, section_path)):
3597
section_parts = section_path.rstrip('/').split('/')
3598
extra_path = '/'.join(location_parts[len(section_parts):])
3599
yield store, LocationSection(section, extra_path)
3602
class LocationMatcher(SectionMatcher):
3604
def __init__(self, store, location):
3605
super(LocationMatcher, self).__init__(store)
3606
url, params = urlutils.split_segment_parameters(location)
3607
if location.startswith('file://'):
3608
location = urlutils.local_path_from_url(location)
3609
self.location = location
3610
branch_name = params.get('branch')
3611
if branch_name is None:
3612
self.branch_name = urlutils.basename(self.location)
3614
self.branch_name = urlutils.unescape(branch_name)
3616
def _get_matching_sections(self):
3617
"""Get all sections matching ``location``."""
3618
# We slightly diverge from LocalConfig here by allowing the no-name
3619
# section as the most generic one and the lower priority.
3620
no_name_section = None
3622
# Filter out the no_name_section so _iter_for_location_by_parts can be
3623
# used (it assumes all sections have a name).
3624
for _, section in self.store.get_sections():
3625
if section.id is None:
3626
no_name_section = section
3628
all_sections.append(section)
3629
# Unfortunately _iter_for_location_by_parts deals with section names so
3630
# we have to resync.
3631
filtered_sections = _iter_for_location_by_parts(
3632
[s.id for s in all_sections], self.location)
3633
iter_all_sections = iter(all_sections)
3634
matching_sections = []
3635
if no_name_section is not None:
3636
matching_sections.append(
3637
(0, LocationSection(no_name_section, self.location)))
3638
for section_id, extra_path, length in filtered_sections:
3639
# a section id is unique for a given store so it's safe to take the
3640
# first matching section while iterating. Also, all filtered
3641
# sections are part of 'all_sections' and will always be found
3644
section = next(iter_all_sections)
3645
if section_id == section.id:
3646
section = LocationSection(section, extra_path,
3648
matching_sections.append((length, section))
3650
return matching_sections
3652
def get_sections(self):
3653
# Override the default implementation as we want to change the order
3654
# We want the longest (aka more specific) locations first
3655
sections = sorted(self._get_matching_sections(),
3656
key=lambda match: (match[0], match[1].id),
3658
# Sections mentioning 'ignore_parents' restrict the selection
3659
for _, section in sections:
3660
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3661
ignore = section.get('ignore_parents', None)
3662
if ignore is not None:
3663
ignore = ui.bool_from_string(ignore)
3666
# Finally, we have a valid section
3667
yield self.store, section
3670
# FIXME: _shared_stores should be an attribute of a library state once a
3671
# library_state object is always available.
3673
_shared_stores_at_exit_installed = False
3675
class Stack(object):
3676
"""A stack of configurations where an option can be defined"""
3678
def __init__(self, sections_def, store=None, mutable_section_id=None):
3679
"""Creates a stack of sections with an optional store for changes.
3681
:param sections_def: A list of Section or callables that returns an
3682
iterable of Section. This defines the Sections for the Stack and
3683
can be called repeatedly if needed.
3685
:param store: The optional Store where modifications will be
3686
recorded. If none is specified, no modifications can be done.
3688
:param mutable_section_id: The id of the MutableSection where changes
3689
are recorded. This requires the ``store`` parameter to be
3692
self.sections_def = sections_def
3694
self.mutable_section_id = mutable_section_id
3696
def iter_sections(self):
3697
"""Iterate all the defined sections."""
3698
# Ensuring lazy loading is achieved by delaying section matching (which
3699
# implies querying the persistent storage) until it can't be avoided
3700
# anymore by using callables to describe (possibly empty) section
3702
for sections in self.sections_def:
3703
for store, section in sections():
3704
yield store, section
3706
def get(self, name, expand=True, convert=True):
3707
"""Return the *first* option value found in the sections.
3709
This is where we guarantee that sections coming from Store are loaded
3710
lazily: the loading is delayed until we need to either check that an
3711
option exists or get its value, which in turn may require to discover
3712
in which sections it can be defined. Both of these (section and option
3713
existence) require loading the store (even partially).
3715
:param name: The queried option.
3717
:param expand: Whether options references should be expanded.
3719
:param convert: Whether the option value should be converted from
3720
unicode (do nothing for non-registered options).
3722
:returns: The value of the option.
3724
# FIXME: No caching of options nor sections yet -- vila 20110503
3726
found_store = None # Where the option value has been found
3727
# If the option is registered, it may provide additional info about
3730
opt = option_registry.get(name)
3735
def expand_and_convert(val):
3736
# This may need to be called in different contexts if the value is
3737
# None or ends up being None during expansion or conversion.
3740
if isinstance(val, string_types):
3741
val = self._expand_options_in_string(val)
3743
trace.warning('Cannot expand "%s":'
3744
' %s does not support option expansion'
3745
% (name, type(val)))
3747
val = found_store.unquote(val)
3749
val = opt.convert_from_unicode(found_store, val)
3752
# First of all, check if the environment can override the configuration
3754
if opt is not None and opt.override_from_env:
3755
value = opt.get_override()
3756
value = expand_and_convert(value)
3758
for store, section in self.iter_sections():
3759
value = section.get(name)
3760
if value is not None:
3763
value = expand_and_convert(value)
3764
if opt is not None and value is None:
3765
# If the option is registered, it may provide a default value
3766
value = opt.get_default()
3767
value = expand_and_convert(value)
3768
for hook in ConfigHooks['get']:
3769
hook(self, name, value)
3772
def expand_options(self, string, env=None):
3773
"""Expand option references in the string in the configuration context.
3775
:param string: The string containing option(s) to expand.
3777
:param env: An option dict defining additional configuration options or
3778
overriding existing ones.
3780
:returns: The expanded string.
3782
return self._expand_options_in_string(string, env)
3784
def _expand_options_in_string(self, string, env=None, _refs=None):
3785
"""Expand options in the string in the configuration context.
3787
:param string: The string to be expanded.
3789
:param env: An option dict defining additional configuration options or
3790
overriding existing ones.
3792
:param _refs: Private list (FIFO) containing the options being expanded
3795
:returns: The expanded string.
3798
# Not much to expand there
3801
# What references are currently resolved (to detect loops)
3804
# We need to iterate until no more refs appear ({{foo}} will need two
3805
# iterations for example).
3810
for is_ref, chunk in iter_option_refs(result):
3812
chunks.append(chunk)
3817
raise OptionExpansionLoop(string, _refs)
3819
value = self._expand_option(name, env, _refs)
3821
raise ExpandingUnknownOption(name, string)
3822
chunks.append(value)
3824
result = ''.join(chunks)
3827
def _expand_option(self, name, env, _refs):
3828
if env is not None and name in env:
3829
# Special case, values provided in env takes precedence over
3833
value = self.get(name, expand=False, convert=False)
3834
value = self._expand_options_in_string(value, env, _refs)
3837
def _get_mutable_section(self):
3838
"""Get the MutableSection for the Stack.
3840
This is where we guarantee that the mutable section is lazily loaded:
3841
this means we won't load the corresponding store before setting a value
3842
or deleting an option. In practice the store will often be loaded but
3843
this helps catching some programming errors.
3846
section = store.get_mutable_section(self.mutable_section_id)
3847
return store, section
3849
def set(self, name, value):
3850
"""Set a new value for the option."""
3851
store, section = self._get_mutable_section()
3852
section.set(name, store.quote(value))
3853
for hook in ConfigHooks['set']:
3854
hook(self, name, value)
3856
def remove(self, name):
3857
"""Remove an existing option."""
3858
_, section = self._get_mutable_section()
3859
section.remove(name)
3860
for hook in ConfigHooks['remove']:
3864
# Mostly for debugging use
3865
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3867
def _get_overrides(self):
3868
if breezy._global_state is not None:
3869
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
3870
return breezy._global_state.cmdline_overrides.get_sections()
3873
def get_shared_store(self, store, state=None):
3874
"""Get a known shared store.
3876
Store urls uniquely identify them and are used to ensure a single copy
3877
is shared across all users.
3879
:param store: The store known to the caller.
3881
:param state: The library state where the known stores are kept.
3883
:returns: The store received if it's not a known one, an already known
3887
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
3888
state = breezy._global_state
3890
global _shared_stores_at_exit_installed
3891
stores = _shared_stores
3892
def save_config_changes():
3893
for k, store in stores.items():
3894
store.save_changes()
3895
if not _shared_stores_at_exit_installed:
3896
# FIXME: Ugly hack waiting for library_state to always be
3897
# available. -- vila 20120731
3899
atexit.register(save_config_changes)
3900
_shared_stores_at_exit_installed = True
3902
stores = state.config_stores
3903
url = store.external_url()
3911
class MemoryStack(Stack):
3912
"""A configuration stack defined from a string.
3914
This is mainly intended for tests and requires no disk resources.
3917
def __init__(self, content=None):
3918
"""Create an in-memory stack from a given content.
3920
It uses a single store based on configobj and support reading and
3923
:param content: The initial content of the store. If None, the store is
3924
not loaded and ``_load_from_string`` can and should be used if
3927
store = IniFileStore()
3928
if content is not None:
3929
store._load_from_string(content)
3930
super(MemoryStack, self).__init__(
3931
[store.get_sections], store)
3934
class _CompatibleStack(Stack):
3935
"""Place holder for compatibility with previous design.
3937
This is intended to ease the transition from the Config-based design to the
3938
Stack-based design and should not be used nor relied upon by plugins.
3940
One assumption made here is that the daughter classes will all use Stores
3941
derived from LockableIniFileStore).
3943
It implements set() and remove () by re-loading the store before applying
3944
the modification and saving it.
3946
The long term plan being to implement a single write by store to save
3947
all modifications, this class should not be used in the interim.
3950
def set(self, name, value):
3953
super(_CompatibleStack, self).set(name, value)
3954
# Force a write to persistent storage
3957
def remove(self, name):
3960
super(_CompatibleStack, self).remove(name)
3961
# Force a write to persistent storage
3965
class GlobalStack(Stack):
3966
"""Global options only stack.
3968
The following sections are queried:
3970
* command-line overrides,
3972
* the 'DEFAULT' section in bazaar.conf
3974
This stack will use the ``DEFAULT`` section in bazaar.conf as its
3979
gstore = self.get_shared_store(GlobalStore())
3980
super(GlobalStack, self).__init__(
3981
[self._get_overrides,
3982
NameMatcher(gstore, 'DEFAULT').get_sections],
3983
gstore, mutable_section_id='DEFAULT')
3986
class LocationStack(Stack):
3987
"""Per-location options falling back to global options stack.
3990
The following sections are queried:
3992
* command-line overrides,
3994
* the sections matching ``location`` in ``locations.conf``, the order being
3995
defined by the number of path components in the section glob, higher
3996
numbers first (from most specific section to most generic).
3998
* the 'DEFAULT' section in bazaar.conf
4000
This stack will use the ``location`` section in locations.conf as its
4004
def __init__(self, location):
4005
"""Make a new stack for a location and global configuration.
4007
:param location: A URL prefix to """
4008
lstore = self.get_shared_store(LocationStore())
4009
if location.startswith('file://'):
4010
location = urlutils.local_path_from_url(location)
4011
gstore = self.get_shared_store(GlobalStore())
4012
super(LocationStack, self).__init__(
4013
[self._get_overrides,
4014
LocationMatcher(lstore, location).get_sections,
4015
NameMatcher(gstore, 'DEFAULT').get_sections],
4016
lstore, mutable_section_id=location)
4019
class BranchStack(Stack):
4020
"""Per-location options falling back to branch then global options stack.
4022
The following sections are queried:
4024
* command-line overrides,
4026
* the sections matching ``location`` in ``locations.conf``, the order being
4027
defined by the number of path components in the section glob, higher
4028
numbers first (from most specific section to most generic),
4030
* the no-name section in branch.conf,
4032
* the ``DEFAULT`` section in ``bazaar.conf``.
4034
This stack will use the no-name section in ``branch.conf`` as its
4038
def __init__(self, branch):
4039
lstore = self.get_shared_store(LocationStore())
4040
bstore = branch._get_config_store()
4041
gstore = self.get_shared_store(GlobalStore())
4042
super(BranchStack, self).__init__(
4043
[self._get_overrides,
4044
LocationMatcher(lstore, branch.base).get_sections,
4045
NameMatcher(bstore, None).get_sections,
4046
NameMatcher(gstore, 'DEFAULT').get_sections],
4048
self.branch = branch
4050
def lock_write(self, token=None):
4051
return self.branch.lock_write(token)
4054
return self.branch.unlock()
4056
def set(self, name, value):
4057
with self.lock_write():
4058
super(BranchStack, self).set(name, value)
4059
# Unlocking the branch will trigger a store.save_changes() so the
4060
# last unlock saves all the changes.
4062
def remove(self, name):
4063
with self.lock_write():
4064
super(BranchStack, self).remove(name)
4065
# Unlocking the branch will trigger a store.save_changes() so the
4066
# last unlock saves all the changes.
4069
class RemoteControlStack(Stack):
4070
"""Remote control-only options stack."""
4072
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
4073
# with the stack used for remote bzr dirs. RemoteControlStack only uses
4074
# control.conf and is used only for stack options.
4076
def __init__(self, bzrdir):
4077
cstore = bzrdir._get_config_store()
4078
super(RemoteControlStack, self).__init__(
4079
[NameMatcher(cstore, None).get_sections],
4081
self.controldir = bzrdir
4084
class BranchOnlyStack(Stack):
4085
"""Branch-only options stack."""
4087
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
4088
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
4089
# -- vila 2011-12-16
4091
def __init__(self, branch):
4092
bstore = branch._get_config_store()
4093
super(BranchOnlyStack, self).__init__(
4094
[NameMatcher(bstore, None).get_sections],
4096
self.branch = branch
4098
def lock_write(self, token=None):
4099
return self.branch.lock_write(token)
4102
return self.branch.unlock()
4104
def set(self, name, value):
4105
with self.lock_write():
4106
super(BranchOnlyStack, self).set(name, value)
4107
# Force a write to persistent storage
4108
self.store.save_changes()
4110
def remove(self, name):
4111
with self.lock_write():
4112
super(BranchOnlyStack, self).remove(name)
4113
# Force a write to persistent storage
4114
self.store.save_changes()
4117
class cmd_config(commands.Command):
4118
__doc__ = """Display, set or remove a configuration option.
4120
Display the active value for option NAME.
4122
If --all is specified, NAME is interpreted as a regular expression and all
4123
matching options are displayed mentioning their scope and without resolving
4124
option references in the value). The active value that bzr will take into
4125
account is the first one displayed for each option.
4127
If NAME is not given, --all .* is implied (all options are displayed for the
4130
Setting a value is achieved by using NAME=value without spaces. The value
4131
is set in the most relevant scope and can be checked by displaying the
4134
Removing a value is achieved by using --remove NAME.
4137
takes_args = ['name?']
4141
# FIXME: This should be a registry option so that plugins can register
4142
# their own config files (or not) and will also address
4143
# http://pad.lv/788991 -- vila 20101115
4144
commands.Option('scope', help='Reduce the scope to the specified'
4145
' configuration file.',
4147
commands.Option('all',
4148
help='Display all the defined values for the matching options.',
4150
commands.Option('remove', help='Remove the option from'
4151
' the configuration file.'),
4154
_see_also = ['configuration']
4156
@commands.display_command
4157
def run(self, name=None, all=False, directory=None, scope=None,
4159
if directory is None:
4161
directory = directory_service.directories.dereference(directory)
4162
directory = urlutils.normalize_url(directory)
4164
raise errors.BzrError(
4165
'--all and --remove are mutually exclusive.')
4167
# Delete the option in the given scope
4168
self._remove_config_option(name, directory, scope)
4170
# Defaults to all options
4171
self._show_matching_options('.*', directory, scope)
4174
name, value = name.split('=', 1)
4176
# Display the option(s) value(s)
4178
self._show_matching_options(name, directory, scope)
4180
self._show_value(name, directory, scope)
4183
raise errors.BzrError(
4184
'Only one option can be set.')
4185
# Set the option value
4186
self._set_config_option(name, value, directory, scope)
4188
def _get_stack(self, directory, scope=None, write_access=False):
4189
"""Get the configuration stack specified by ``directory`` and ``scope``.
4191
:param directory: Where the configurations are derived from.
4193
:param scope: A specific config to start from.
4195
:param write_access: Whether a write access to the stack will be
4198
# FIXME: scope should allow access to plugin-specific stacks (even
4199
# reduced to the plugin-specific store), related to
4200
# http://pad.lv/788991 -- vila 2011-11-15
4201
if scope is not None:
4202
if scope == 'breezy':
4203
return GlobalStack()
4204
elif scope == 'locations':
4205
return LocationStack(directory)
4206
elif scope == 'branch':
4208
controldir.ControlDir.open_containing_tree_or_branch(
4211
self.add_cleanup(br.lock_write().unlock)
4212
return br.get_config_stack()
4213
raise NoSuchConfig(scope)
4217
controldir.ControlDir.open_containing_tree_or_branch(
4220
self.add_cleanup(br.lock_write().unlock)
4221
return br.get_config_stack()
4222
except errors.NotBranchError:
4223
return LocationStack(directory)
4225
def _quote_multiline(self, value):
4227
value = '"""' + value + '"""'
4230
def _show_value(self, name, directory, scope):
4231
conf = self._get_stack(directory, scope)
4232
value = conf.get(name, expand=True, convert=False)
4233
if value is not None:
4234
# Quote the value appropriately
4235
value = self._quote_multiline(value)
4236
self.outf.write('%s\n' % (value,))
4238
raise NoSuchConfigOption(name)
4240
def _show_matching_options(self, name, directory, scope):
4241
name = lazy_regex.lazy_compile(name)
4242
# We want any error in the regexp to be raised *now* so we need to
4243
# avoid the delay introduced by the lazy regexp. But, we still do
4244
# want the nicer errors raised by lazy_regex.
4245
name._compile_and_collapse()
4248
conf = self._get_stack(directory, scope)
4249
for store, section in conf.iter_sections():
4250
for oname in section.iter_option_names():
4251
if name.search(oname):
4252
if cur_store_id != store.id:
4253
# Explain where the options are defined
4254
self.outf.write('%s:\n' % (store.id,))
4255
cur_store_id = store.id
4257
if (section.id is not None and cur_section != section.id):
4258
# Display the section id as it appears in the store
4259
# (None doesn't appear by definition)
4260
self.outf.write(' [%s]\n' % (section.id,))
4261
cur_section = section.id
4262
value = section.get(oname, expand=False)
4263
# Quote the value appropriately
4264
value = self._quote_multiline(value)
4265
self.outf.write(' %s = %s\n' % (oname, value))
4267
def _set_config_option(self, name, value, directory, scope):
4268
conf = self._get_stack(directory, scope, write_access=True)
4269
conf.set(name, value)
4270
# Explicitly save the changes
4271
conf.store.save_changes()
4273
def _remove_config_option(self, name, directory, scope):
4275
raise errors.BzrCommandError(
4276
'--remove expects an option to remove.')
4277
conf = self._get_stack(directory, scope, write_access=True)
4280
# Explicitly save the changes
4281
conf.store.save_changes()
4283
raise NoSuchConfigOption(name)
4288
# We need adapters that can build a Store or a Stack in a test context. Test
4289
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4290
# themselves. The builder will receive a test instance and should return a
4291
# ready-to-use store or stack. Plugins that define new store/stacks can also
4292
# register themselves here to be tested against the tests defined in
4293
# breezy.tests.test_config. Note that the builder can be called multiple times
4294
# for the same test.
4296
# The registered object should be a callable receiving a test instance
4297
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4299
test_store_builder_registry = registry.Registry()
4301
# The registered object should be a callable receiving a test instance
4302
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4304
test_stack_builder_registry = registry.Registry()