1508
2300
configobj[name] = value
1510
2302
configobj.setdefault(section, {})[name] = value
2303
for hook in OldConfigHooks['set']:
2304
hook(self, name, value)
2305
self._set_configobj(configobj)
2307
def remove_option(self, option_name, section_name=None):
2308
configobj = self._get_configobj()
2309
if section_name is None:
2310
del configobj[option_name]
2312
del configobj[section_name][option_name]
2313
for hook in OldConfigHooks['remove']:
2314
hook(self, option_name)
1511
2315
self._set_configobj(configobj)
1513
2317
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2319
f = BytesIO(self._transport.get_bytes(self._filename))
2320
for hook in OldConfigHooks['load']:
1516
2323
except errors.NoSuchFile:
2325
except errors.PermissionDenied as e:
2326
trace.warning("Permission denied while trying to open "
2327
"configuration file %s.", urlutils.unescape_for_display(
2328
urlutils.join(self._transport.base, self._filename), "utf-8"))
2331
def _external_url(self):
2332
return urlutils.join(self._transport.external_url(), self._filename)
1519
2334
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2335
f = self._get_config_file()
2338
conf = ConfigObj(f, encoding='utf-8')
2339
except configobj.ConfigObjError as e:
2340
raise errors.ParseConfigError(e.errors, self._external_url())
2341
except UnicodeDecodeError:
2342
raise errors.ConfigContentError(self._external_url())
1522
2347
def _set_configobj(self, configobj):
1523
out_file = StringIO()
2348
out_file = BytesIO()
1524
2349
configobj.write(out_file)
1525
2350
out_file.seek(0)
1526
2351
self._transport.put_file(self._filename, out_file)
2352
for hook in OldConfigHooks['save']:
2356
class Option(object):
2357
"""An option definition.
2359
The option *values* are stored in config files and found in sections.
2361
Here we define various properties about the option itself, its default
2362
value, how to convert it from stores, what to do when invalid values are
2363
encoutered, in which config files it can be stored.
2366
def __init__(self, name, override_from_env=None,
2367
default=None, default_from_env=None,
2368
help=None, from_unicode=None, invalid=None, unquote=True):
2369
"""Build an option definition.
2371
:param name: the name used to refer to the option.
2373
:param override_from_env: A list of environment variables which can
2374
provide override any configuration setting.
2376
:param default: the default value to use when none exist in the config
2377
stores. This is either a string that ``from_unicode`` will convert
2378
into the proper type, a callable returning a unicode string so that
2379
``from_unicode`` can be used on the return value, or a python
2380
object that can be stringified (so only the empty list is supported
2383
:param default_from_env: A list of environment variables which can
2384
provide a default value. 'default' will be used only if none of the
2385
variables specified here are set in the environment.
2387
:param help: a doc string to explain the option to the user.
2389
:param from_unicode: a callable to convert the unicode string
2390
representing the option value in a store or its default value.
2392
:param invalid: the action to be taken when an invalid value is
2393
encountered in a store. This is called only when from_unicode is
2394
invoked to convert a string and returns None or raise ValueError or
2395
TypeError. Accepted values are: None (ignore invalid values),
2396
'warning' (emit a warning), 'error' (emit an error message and
2399
:param unquote: should the unicode value be unquoted before conversion.
2400
This should be used only when the store providing the values cannot
2401
safely unquote them (see http://pad.lv/906897). It is provided so
2402
daughter classes can handle the quoting themselves.
2404
if override_from_env is None:
2405
override_from_env = []
2406
if default_from_env is None:
2407
default_from_env = []
2409
self.override_from_env = override_from_env
2410
# Convert the default value to a unicode string so all values are
2411
# strings internally before conversion (via from_unicode) is attempted.
2414
elif isinstance(default, list):
2415
# Only the empty list is supported
2417
raise AssertionError(
2418
'Only empty lists are supported as default values')
2420
elif isinstance(default, (binary_type, text_type, bool, int, float)):
2421
# Rely on python to convert strings, booleans and integers
2422
self.default = u'%s' % (default,)
2423
elif callable(default):
2424
self.default = default
2426
# other python objects are not expected
2427
raise AssertionError('%r is not supported as a default value'
2429
self.default_from_env = default_from_env
2431
self.from_unicode = from_unicode
2432
self.unquote = unquote
2433
if invalid and invalid not in ('warning', 'error'):
2434
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2435
self.invalid = invalid
2441
def convert_from_unicode(self, store, unicode_value):
2442
if self.unquote and store is not None and unicode_value is not None:
2443
unicode_value = store.unquote(unicode_value)
2444
if self.from_unicode is None or unicode_value is None:
2445
# Don't convert or nothing to convert
2446
return unicode_value
2448
converted = self.from_unicode(unicode_value)
2449
except (ValueError, TypeError):
2450
# Invalid values are ignored
2452
if converted is None and self.invalid is not None:
2453
# The conversion failed
2454
if self.invalid == 'warning':
2455
trace.warning('Value "%s" is not valid for "%s"',
2456
unicode_value, self.name)
2457
elif self.invalid == 'error':
2458
raise errors.ConfigOptionValueError(self.name, unicode_value)
2461
def get_override(self):
2463
for var in self.override_from_env:
2465
# If the env variable is defined, its value takes precedence
2466
value = os.environ[var].decode(osutils.get_user_encoding())
2472
def get_default(self):
2474
for var in self.default_from_env:
2476
# If the env variable is defined, its value is the default one
2477
value = os.environ[var].decode(osutils.get_user_encoding())
2482
# Otherwise, fallback to the value defined at registration
2483
if callable(self.default):
2484
value = self.default()
2485
if not isinstance(value, text_type):
2486
raise AssertionError(
2487
"Callable default value for '%s' should be unicode"
2490
value = self.default
2493
def get_help_topic(self):
2496
def get_help_text(self, additional_see_also=None, plain=True):
2498
from breezy import help_topics
2499
result += help_topics._format_see_also(additional_see_also)
2501
result = help_topics.help_as_plain_text(result)
2505
# Predefined converters to get proper values from store
2507
def bool_from_store(unicode_str):
2508
return ui.bool_from_string(unicode_str)
2511
def int_from_store(unicode_str):
2512
return int(unicode_str)
2515
_unit_suffixes = dict(K=10**3, M=10**6, G=10**9)
2517
def int_SI_from_store(unicode_str):
2518
"""Convert a human readable size in SI units, e.g 10MB into an integer.
2520
Accepted suffixes are K,M,G. It is case-insensitive and may be followed
2521
by a trailing b (i.e. Kb, MB). This is intended to be practical and not
2524
:return Integer, expanded to its base-10 value if a proper SI unit is
2525
found, None otherwise.
2527
regexp = "^(\d+)(([" + ''.join(_unit_suffixes) + "])b?)?$"
2528
p = re.compile(regexp, re.IGNORECASE)
2529
m = p.match(unicode_str)
2532
val, _, unit = m.groups()
2536
coeff = _unit_suffixes[unit.upper()]
2538
raise ValueError(gettext('{0} is not an SI unit.').format(unit))
2543
def float_from_store(unicode_str):
2544
return float(unicode_str)
2547
# Use an empty dict to initialize an empty configobj avoiding all parsing and
2549
_list_converter_config = configobj.ConfigObj(
2550
{}, encoding='utf-8', list_values=True, interpolation=False)
2553
class ListOption(Option):
2555
def __init__(self, name, default=None, default_from_env=None,
2556
help=None, invalid=None):
2557
"""A list Option definition.
2559
This overrides the base class so the conversion from a unicode string
2560
can take quoting into account.
2562
super(ListOption, self).__init__(
2563
name, default=default, default_from_env=default_from_env,
2564
from_unicode=self.from_unicode, help=help,
2565
invalid=invalid, unquote=False)
2567
def from_unicode(self, unicode_str):
2568
if not isinstance(unicode_str, string_types):
2570
# Now inject our string directly as unicode. All callers got their
2571
# value from configobj, so values that need to be quoted are already
2573
_list_converter_config.reset()
2574
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2575
maybe_list = _list_converter_config['list']
2576
if isinstance(maybe_list, string_types):
2578
# A single value, most probably the user forgot (or didn't care
2579
# to add) the final ','
2582
# The empty string, convert to empty list
2585
# We rely on ConfigObj providing us with a list already
2590
class RegistryOption(Option):
2591
"""Option for a choice from a registry."""
2593
def __init__(self, name, registry, default_from_env=None,
2594
help=None, invalid=None):
2595
"""A registry based Option definition.
2597
This overrides the base class so the conversion from a unicode string
2598
can take quoting into account.
2600
super(RegistryOption, self).__init__(
2601
name, default=lambda: unicode(registry.default_key),
2602
default_from_env=default_from_env,
2603
from_unicode=self.from_unicode, help=help,
2604
invalid=invalid, unquote=False)
2605
self.registry = registry
2607
def from_unicode(self, unicode_str):
2608
if not isinstance(unicode_str, string_types):
2611
return self.registry.get(unicode_str)
2614
"Invalid value %s for %s."
2615
"See help for a list of possible values." % (unicode_str,
2620
ret = [self._help, "\n\nThe following values are supported:\n"]
2621
for key in self.registry.keys():
2622
ret.append(" %s - %s\n" % (key, self.registry.get_help(key)))
2626
_option_ref_re = lazy_regex.lazy_compile('({[^\d\W](?:\.\w|-\w|\w)*})')
2627
"""Describes an expandable option reference.
2629
We want to match the most embedded reference first.
2631
I.e. for '{{foo}}' we will get '{foo}',
2632
for '{bar{baz}}' we will get '{baz}'
2635
def iter_option_refs(string):
2636
# Split isolate refs so every other chunk is a ref
2638
for chunk in _option_ref_re.split(string):
2643
class OptionRegistry(registry.Registry):
2644
"""Register config options by their name.
2646
This overrides ``registry.Registry`` to simplify registration by acquiring
2647
some information from the option object itself.
2650
def _check_option_name(self, option_name):
2651
"""Ensures an option name is valid.
2653
:param option_name: The name to validate.
2655
if _option_ref_re.match('{%s}' % option_name) is None:
2656
raise errors.IllegalOptionName(option_name)
2658
def register(self, option):
2659
"""Register a new option to its name.
2661
:param option: The option to register. Its name is used as the key.
2663
self._check_option_name(option.name)
2664
super(OptionRegistry, self).register(option.name, option,
2667
def register_lazy(self, key, module_name, member_name):
2668
"""Register a new option to be loaded on request.
2670
:param key: the key to request the option later. Since the registration
2671
is lazy, it should be provided and match the option name.
2673
:param module_name: the python path to the module. Such as 'os.path'.
2675
:param member_name: the member of the module to return. If empty or
2676
None, get() will return the module itself.
2678
self._check_option_name(key)
2679
super(OptionRegistry, self).register_lazy(key,
2680
module_name, member_name)
2682
def get_help(self, key=None):
2683
"""Get the help text associated with the given key"""
2684
option = self.get(key)
2685
the_help = option.help
2686
if callable(the_help):
2687
return the_help(self, key)
2691
option_registry = OptionRegistry()
2694
# Registered options in lexicographical order
2696
option_registry.register(
2697
Option('append_revisions_only',
2698
default=None, from_unicode=bool_from_store, invalid='warning',
2700
Whether to only append revisions to the mainline.
2702
If this is set to true, then it is not possible to change the
2703
existing mainline of the branch.
2705
option_registry.register(
2706
ListOption('acceptable_keys',
2709
List of GPG key patterns which are acceptable for verification.
2711
option_registry.register(
2712
Option('add.maximum_file_size',
2713
default=u'20MB', from_unicode=int_SI_from_store,
2715
Size above which files should be added manually.
2717
Files below this size are added automatically when using ``bzr add`` without
2720
A negative value means disable the size check.
2722
option_registry.register(
2724
default=None, from_unicode=bool_from_store,
2726
Is the branch bound to ``bound_location``.
2728
If set to "True", the branch should act as a checkout, and push each commit to
2729
the bound_location. This option is normally set by ``bind``/``unbind``.
2731
See also: bound_location.
2733
option_registry.register(
2734
Option('bound_location',
2737
The location that commits should go to when acting as a checkout.
2739
This option is normally set by ``bind``.
2743
option_registry.register(
2744
Option('branch.fetch_tags', default=False, from_unicode=bool_from_store,
2746
Whether revisions associated with tags should be fetched.
2748
option_registry.register_lazy(
2749
'bzr.transform.orphan_policy', 'breezy.transform', 'opt_transform_orphan')
2750
option_registry.register(
2751
Option('bzr.workingtree.worth_saving_limit', default=10,
2752
from_unicode=int_from_store, invalid='warning',
2754
How many changes before saving the dirstate.
2756
-1 means that we will never rewrite the dirstate file for only
2757
stat-cache changes. Regardless of this setting, we will always rewrite
2758
the dirstate file if a file is added/removed/renamed/etc. This flag only
2759
affects the behavior of updating the dirstate file after we notice that
2760
a file has been touched.
2762
option_registry.register(
2763
Option('bugtracker', default=None,
2765
Default bug tracker to use.
2767
This bug tracker will be used for example when marking bugs
2768
as fixed using ``bzr commit --fixes``, if no explicit
2769
bug tracker was specified.
2771
option_registry.register(
2772
Option('check_signatures', default=CHECK_IF_POSSIBLE,
2773
from_unicode=signature_policy_from_unicode,
2775
GPG checking policy.
2777
Possible values: require, ignore, check-available (default)
2779
this option will control whether bzr will require good gpg
2780
signatures, ignore them, or check them if they are
2783
option_registry.register(
2784
Option('child_submit_format',
2785
help='''The preferred format of submissions to this branch.'''))
2786
option_registry.register(
2787
Option('child_submit_to',
2788
help='''Where submissions to this branch are mailed to.'''))
2789
option_registry.register(
2790
Option('create_signatures', default=SIGN_WHEN_REQUIRED,
2791
from_unicode=signing_policy_from_unicode,
2795
Possible values: always, never, when-required (default)
2797
This option controls whether bzr will always create
2798
gpg signatures or not on commits.
2800
option_registry.register(
2801
Option('dirstate.fdatasync', default=True,
2802
from_unicode=bool_from_store,
2804
Flush dirstate changes onto physical disk?
2806
If true (default), working tree metadata changes are flushed through the
2807
OS buffers to physical disk. This is somewhat slower, but means data
2808
should not be lost if the machine crashes. See also repository.fdatasync.
2810
option_registry.register(
2811
ListOption('debug_flags', default=[],
2812
help='Debug flags to activate.'))
2813
option_registry.register(
2814
Option('default_format', default='2a',
2815
help='Format used when creating branches.'))
2816
option_registry.register(
2817
Option('dpush_strict', default=None,
2818
from_unicode=bool_from_store,
2820
The default value for ``dpush --strict``.
2822
If present, defines the ``--strict`` option default value for checking
2823
uncommitted changes before pushing into a different VCS without any
2824
custom bzr metadata.
2826
option_registry.register(
2828
help='The command called to launch an editor to enter a message.'))
2829
option_registry.register(
2830
Option('email', override_from_env=['BRZ_EMAIL'], default=default_email,
2831
help='The users identity'))
2832
option_registry.register(
2833
Option('gpg_signing_command',
2836
Program to use use for creating signatures.
2838
This should support at least the -u and --clearsign options.
2840
option_registry.register(
2841
Option('gpg_signing_key',
2844
GPG key to use for signing.
2846
This defaults to the first key associated with the users email.
2848
option_registry.register(
2849
Option('ignore_missing_extensions', default=False,
2850
from_unicode=bool_from_store,
2852
Control the missing extensions warning display.
2854
The warning will not be emitted if set to True.
2856
option_registry.register(
2858
help='Language to translate messages into.'))
2859
option_registry.register(
2860
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2862
Steal locks that appears to be dead.
2864
If set to True, bzr will check if a lock is supposed to be held by an
2865
active process from the same user on the same machine. If the user and
2866
machine match, but no process with the given PID is active, then bzr
2867
will automatically break the stale lock, and create a new lock for
2869
Otherwise, bzr will prompt as normal to break the lock.
2871
option_registry.register(
2872
Option('log_format', default='long',
2874
Log format to use when displaying revisions.
2876
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2877
may be provided by plugins.
2879
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2881
option_registry.register(
2882
Option('output_encoding',
2883
help= 'Unicode encoding for output'
2884
' (terminal encoding if not specified).'))
2885
option_registry.register(
2886
Option('parent_location',
2889
The location of the default branch for pull or merge.
2891
This option is normally set when creating a branch, the first ``pull`` or by
2892
``pull --remember``.
2894
option_registry.register(
2895
Option('post_commit', default=None,
2897
Post commit functions.
2899
An ordered list of python functions to call, separated by spaces.
2901
Each function takes branch, rev_id as parameters.
2903
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2905
option_registry.register(
2906
Option('public_branch',
2909
A publically-accessible version of this branch.
2911
This implies that the branch setting this option is not publically-accessible.
2912
Used and set by ``bzr send``.
2914
option_registry.register(
2915
Option('push_location',
2918
The location of the default branch for push.
2920
This option is normally set by the first ``push`` or ``push --remember``.
2922
option_registry.register(
2923
Option('push_strict', default=None,
2924
from_unicode=bool_from_store,
2926
The default value for ``push --strict``.
2928
If present, defines the ``--strict`` option default value for checking
2929
uncommitted changes before sending a merge directive.
2931
option_registry.register(
2932
Option('repository.fdatasync', default=True,
2933
from_unicode=bool_from_store,
2935
Flush repository changes onto physical disk?
2937
If true (default), repository changes are flushed through the OS buffers
2938
to physical disk. This is somewhat slower, but means data should not be
2939
lost if the machine crashes. See also dirstate.fdatasync.
2941
option_registry.register_lazy('smtp_server',
2942
'breezy.smtp_connection', 'smtp_server')
2943
option_registry.register_lazy('smtp_password',
2944
'breezy.smtp_connection', 'smtp_password')
2945
option_registry.register_lazy('smtp_username',
2946
'breezy.smtp_connection', 'smtp_username')
2947
option_registry.register(
2948
Option('selftest.timeout',
2950
from_unicode=int_from_store,
2951
help='Abort selftest if one test takes longer than this many seconds',
2954
option_registry.register(
2955
Option('send_strict', default=None,
2956
from_unicode=bool_from_store,
2958
The default value for ``send --strict``.
2960
If present, defines the ``--strict`` option default value for checking
2961
uncommitted changes before sending a bundle.
2964
option_registry.register(
2965
Option('serve.client_timeout',
2966
default=300.0, from_unicode=float_from_store,
2967
help="If we wait for a new request from a client for more than"
2968
" X seconds, consider the client idle, and hangup."))
2969
option_registry.register(
2970
Option('stacked_on_location',
2972
help="""The location where this branch is stacked on."""))
2973
option_registry.register(
2974
Option('submit_branch',
2977
The branch you intend to submit your current work to.
2979
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2980
by the ``submit:`` revision spec.
2982
option_registry.register(
2984
help='''Where submissions from this branch are mailed to.'''))
2985
option_registry.register(
2986
ListOption('suppress_warnings',
2988
help="List of warning classes to suppress."))
2989
option_registry.register(
2990
Option('validate_signatures_in_log', default=False,
2991
from_unicode=bool_from_store, invalid='warning',
2992
help='''Whether to validate signatures in brz log.'''))
2993
option_registry.register_lazy('ssl.ca_certs',
2994
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_ca_certs')
2996
option_registry.register_lazy('ssl.cert_reqs',
2997
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_cert_reqs')
3000
class Section(object):
3001
"""A section defines a dict of option name => value.
3003
This is merely a read-only dict which can add some knowledge about the
3004
options. It is *not* a python dict object though and doesn't try to mimic
3008
def __init__(self, section_id, options):
3009
self.id = section_id
3010
# We re-use the dict-like object received
3011
self.options = options
3013
def get(self, name, default=None, expand=True):
3014
return self.options.get(name, default)
3016
def iter_option_names(self):
3017
for k in self.options.iterkeys():
3021
# Mostly for debugging use
3022
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
3025
_NewlyCreatedOption = object()
3026
"""Was the option created during the MutableSection lifetime"""
3027
_DeletedOption = object()
3028
"""Was the option deleted during the MutableSection lifetime"""
3031
class MutableSection(Section):
3032
"""A section allowing changes and keeping track of the original values."""
3034
def __init__(self, section_id, options):
3035
super(MutableSection, self).__init__(section_id, options)
3036
self.reset_changes()
3038
def set(self, name, value):
3039
if name not in self.options:
3040
# This is a new option
3041
self.orig[name] = _NewlyCreatedOption
3042
elif name not in self.orig:
3043
self.orig[name] = self.get(name, None)
3044
self.options[name] = value
3046
def remove(self, name):
3047
if name not in self.orig and name in self.options:
3048
self.orig[name] = self.get(name, None)
3049
del self.options[name]
3051
def reset_changes(self):
3054
def apply_changes(self, dirty, store):
3055
"""Apply option value changes.
3057
``self`` has been reloaded from the persistent storage. ``dirty``
3058
contains the changes made since the previous loading.
3060
:param dirty: the mutable section containing the changes.
3062
:param store: the store containing the section
3064
for k, expected in dirty.orig.iteritems():
3065
actual = dirty.get(k, _DeletedOption)
3066
reloaded = self.get(k, _NewlyCreatedOption)
3067
if actual is _DeletedOption:
3068
if k in self.options:
3072
# Report concurrent updates in an ad-hoc way. This should only
3073
# occurs when different processes try to update the same option
3074
# which is not supported (as in: the config framework is not meant
3075
# to be used as a sharing mechanism).
3076
if expected != reloaded:
3077
if actual is _DeletedOption:
3078
actual = '<DELETED>'
3079
if reloaded is _NewlyCreatedOption:
3080
reloaded = '<CREATED>'
3081
if expected is _NewlyCreatedOption:
3082
expected = '<CREATED>'
3083
# Someone changed the value since we get it from the persistent
3085
trace.warning(gettext(
3086
"Option {0} in section {1} of {2} was changed"
3087
" from {3} to {4}. The {5} value will be saved.".format(
3088
k, self.id, store.external_url(), expected,
3090
# No need to keep track of these changes
3091
self.reset_changes()
3094
class Store(object):
3095
"""Abstract interface to persistent storage for configuration options."""
3097
readonly_section_class = Section
3098
mutable_section_class = MutableSection
3101
# Which sections need to be saved (by section id). We use a dict here
3102
# so the dirty sections can be shared by multiple callers.
3103
self.dirty_sections = {}
3105
def is_loaded(self):
3106
"""Returns True if the Store has been loaded.
3108
This is used to implement lazy loading and ensure the persistent
3109
storage is queried only when needed.
3111
raise NotImplementedError(self.is_loaded)
3114
"""Loads the Store from persistent storage."""
3115
raise NotImplementedError(self.load)
3117
def _load_from_string(self, bytes):
3118
"""Create a store from a string in configobj syntax.
3120
:param bytes: A string representing the file content.
3122
raise NotImplementedError(self._load_from_string)
3125
"""Unloads the Store.
3127
This should make is_loaded() return False. This is used when the caller
3128
knows that the persistent storage has changed or may have change since
3131
raise NotImplementedError(self.unload)
3133
def quote(self, value):
3134
"""Quote a configuration option value for storing purposes.
3136
This allows Stacks to present values as they will be stored.
3140
def unquote(self, value):
3141
"""Unquote a configuration option value into unicode.
3143
The received value is quoted as stored.
3148
"""Saves the Store to persistent storage."""
3149
raise NotImplementedError(self.save)
3151
def _need_saving(self):
3152
for s in self.dirty_sections.values():
3154
# At least one dirty section contains a modification
3158
def apply_changes(self, dirty_sections):
3159
"""Apply changes from dirty sections while checking for coherency.
3161
The Store content is discarded and reloaded from persistent storage to
3162
acquire up-to-date values.
3164
Dirty sections are MutableSection which kept track of the value they
3165
are expected to update.
3167
# We need an up-to-date version from the persistent storage, unload the
3168
# store. The reload will occur when needed (triggered by the first
3169
# get_mutable_section() call below.
3171
# Apply the changes from the preserved dirty sections
3172
for section_id, dirty in dirty_sections.iteritems():
3173
clean = self.get_mutable_section(section_id)
3174
clean.apply_changes(dirty, self)
3175
# Everything is clean now
3176
self.dirty_sections = {}
3178
def save_changes(self):
3179
"""Saves the Store to persistent storage if changes occurred.
3181
Apply the changes recorded in the mutable sections to a store content
3182
refreshed from persistent storage.
3184
raise NotImplementedError(self.save_changes)
3186
def external_url(self):
3187
raise NotImplementedError(self.external_url)
3189
def get_sections(self):
3190
"""Returns an ordered iterable of existing sections.
3192
:returns: An iterable of (store, section).
3194
raise NotImplementedError(self.get_sections)
3196
def get_mutable_section(self, section_id=None):
3197
"""Returns the specified mutable section.
3199
:param section_id: The section identifier
3201
raise NotImplementedError(self.get_mutable_section)
3204
# Mostly for debugging use
3205
return "<config.%s(%s)>" % (self.__class__.__name__,
3206
self.external_url())
3209
class CommandLineStore(Store):
3210
"A store to carry command line overrides for the config options."""
3212
def __init__(self, opts=None):
3213
super(CommandLineStore, self).__init__()
3220
# The dict should be cleared but not replaced so it can be shared.
3221
self.options.clear()
3223
def _from_cmdline(self, overrides):
3224
# Reset before accepting new definitions
3226
for over in overrides:
3228
name, value = over.split('=', 1)
3230
raise errors.BzrCommandError(
3231
gettext("Invalid '%s', should be of the form 'name=value'")
3233
self.options[name] = value
3235
def external_url(self):
3236
# Not an url but it makes debugging easier and is never needed
3240
def get_sections(self):
3241
yield self, self.readonly_section_class(None, self.options)
3244
class IniFileStore(Store):
3245
"""A config Store using ConfigObj for storage.
3247
:ivar _config_obj: Private member to hold the ConfigObj instance used to
3248
serialize/deserialize the config file.
3252
"""A config Store using ConfigObj for storage.
3254
super(IniFileStore, self).__init__()
3255
self._config_obj = None
3257
def is_loaded(self):
3258
return self._config_obj != None
3261
self._config_obj = None
3262
self.dirty_sections = {}
3264
def _load_content(self):
3265
"""Load the config file bytes.
3267
This should be provided by subclasses
3269
:return: Byte string
3271
raise NotImplementedError(self._load_content)
3273
def _save_content(self, content):
3274
"""Save the config file bytes.
3276
This should be provided by subclasses
3278
:param content: Config file bytes to write
3280
raise NotImplementedError(self._save_content)
3283
"""Load the store from the associated file."""
3284
if self.is_loaded():
3286
content = self._load_content()
3287
self._load_from_string(content)
3288
for hook in ConfigHooks['load']:
3291
def _load_from_string(self, bytes):
3292
"""Create a config store from a string.
3294
:param bytes: A string representing the file content.
3296
if self.is_loaded():
3297
raise AssertionError('Already loaded: %r' % (self._config_obj,))
3298
co_input = BytesIO(bytes)
3300
# The config files are always stored utf8-encoded
3301
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3303
except configobj.ConfigObjError as e:
3304
self._config_obj = None
3305
raise errors.ParseConfigError(e.errors, self.external_url())
3306
except UnicodeDecodeError:
3307
raise errors.ConfigContentError(self.external_url())
3309
def save_changes(self):
3310
if not self.is_loaded():
3313
if not self._need_saving():
3315
# Preserve the current version
3316
dirty_sections = dict(self.dirty_sections.items())
3317
self.apply_changes(dirty_sections)
3318
# Save to the persistent storage
3322
if not self.is_loaded():
3326
self._config_obj.write(out)
3327
self._save_content(out.getvalue())
3328
for hook in ConfigHooks['save']:
3331
def get_sections(self):
3332
"""Get the configobj section in the file order.
3334
:returns: An iterable of (store, section).
3336
# We need a loaded store
3339
except (errors.NoSuchFile, errors.PermissionDenied):
3340
# If the file can't be read, there is no sections
3342
cobj = self._config_obj
3344
yield self, self.readonly_section_class(None, cobj)
3345
for section_name in cobj.sections:
3347
self.readonly_section_class(section_name,
3348
cobj[section_name]))
3350
def get_mutable_section(self, section_id=None):
3351
# We need a loaded store
3354
except errors.NoSuchFile:
3355
# The file doesn't exist, let's pretend it was empty
3356
self._load_from_string('')
3357
if section_id in self.dirty_sections:
3358
# We already created a mutable section for this id
3359
return self.dirty_sections[section_id]
3360
if section_id is None:
3361
section = self._config_obj
3363
section = self._config_obj.setdefault(section_id, {})
3364
mutable_section = self.mutable_section_class(section_id, section)
3365
# All mutable sections can become dirty
3366
self.dirty_sections[section_id] = mutable_section
3367
return mutable_section
3369
def quote(self, value):
3371
# configobj conflates automagical list values and quoting
3372
self._config_obj.list_values = True
3373
return self._config_obj._quote(value)
3375
self._config_obj.list_values = False
3377
def unquote(self, value):
3378
if value and isinstance(value, string_types):
3379
# _unquote doesn't handle None nor empty strings nor anything that
3380
# is not a string, really.
3381
value = self._config_obj._unquote(value)
3384
def external_url(self):
3385
# Since an IniFileStore can be used without a file (at least in tests),
3386
# it's better to provide something than raising a NotImplementedError.
3387
# All daughter classes are supposed to provide an implementation
3389
return 'In-Process Store, no URL'
3392
class TransportIniFileStore(IniFileStore):
3393
"""IniFileStore that loads files from a transport.
3395
:ivar transport: The transport object where the config file is located.
3397
:ivar file_name: The config file basename in the transport directory.
3400
def __init__(self, transport, file_name):
3401
"""A Store using a ini file on a Transport
3403
:param transport: The transport object where the config file is located.
3404
:param file_name: The config file basename in the transport directory.
3406
super(TransportIniFileStore, self).__init__()
3407
self.transport = transport
3408
self.file_name = file_name
3410
def _load_content(self):
3412
return self.transport.get_bytes(self.file_name)
3413
except errors.PermissionDenied:
3414
trace.warning("Permission denied while trying to load "
3415
"configuration store %s.", self.external_url())
3418
def _save_content(self, content):
3419
self.transport.put_bytes(self.file_name, content)
3421
def external_url(self):
3422
# FIXME: external_url should really accepts an optional relpath
3423
# parameter (bug #750169) :-/ -- vila 2011-04-04
3424
# The following will do in the interim but maybe we don't want to
3425
# expose a path here but rather a config ID and its associated
3426
# object </hand wawe>.
3427
return urlutils.join(self.transport.external_url(), self.file_name.encode("ascii"))
3430
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3431
# unlockable stores for use with objects that can already ensure the locking
3432
# (think branches). If different stores (not based on ConfigObj) are created,
3433
# they may face the same issue.
3436
class LockableIniFileStore(TransportIniFileStore):
3437
"""A ConfigObjStore using locks on save to ensure store integrity."""
3439
def __init__(self, transport, file_name, lock_dir_name=None):
3440
"""A config Store using ConfigObj for storage.
3442
:param transport: The transport object where the config file is located.
3444
:param file_name: The config file basename in the transport directory.
3446
if lock_dir_name is None:
3447
lock_dir_name = 'lock'
3448
self.lock_dir_name = lock_dir_name
3449
super(LockableIniFileStore, self).__init__(transport, file_name)
3450
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3452
def lock_write(self, token=None):
3453
"""Takes a write lock in the directory containing the config file.
3455
If the directory doesn't exist it is created.
3457
# FIXME: This doesn't check the ownership of the created directories as
3458
# ensure_config_dir_exists does. It should if the transport is local
3459
# -- vila 2011-04-06
3460
self.transport.create_prefix()
3461
return self._lock.lock_write(token)
3466
def break_lock(self):
3467
self._lock.break_lock()
3471
# We need to be able to override the undecorated implementation
3472
self.save_without_locking()
3474
def save_without_locking(self):
3475
super(LockableIniFileStore, self).save()
3478
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
3479
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
3480
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
3482
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
3483
# functions or a registry will make it easier and clearer for tests, focusing
3484
# on the relevant parts of the API that needs testing -- vila 20110503 (based
3485
# on a poolie's remark)
3486
class GlobalStore(LockableIniFileStore):
3487
"""A config store for global options.
3489
There is a single GlobalStore for a given process.
3492
def __init__(self, possible_transports=None):
3493
t = transport.get_transport_from_path(
3494
config_dir(), possible_transports=possible_transports)
3495
super(GlobalStore, self).__init__(t, 'bazaar.conf')
3499
class LocationStore(LockableIniFileStore):
3500
"""A config store for options specific to a location.
3502
There is a single LocationStore for a given process.
3505
def __init__(self, possible_transports=None):
3506
t = transport.get_transport_from_path(
3507
config_dir(), possible_transports=possible_transports)
3508
super(LocationStore, self).__init__(t, 'locations.conf')
3509
self.id = 'locations'
3512
class BranchStore(TransportIniFileStore):
3513
"""A config store for branch options.
3515
There is a single BranchStore for a given branch.
3518
def __init__(self, branch):
3519
super(BranchStore, self).__init__(branch.control_transport,
3521
self.branch = branch
3525
class ControlStore(LockableIniFileStore):
3527
def __init__(self, bzrdir):
3528
super(ControlStore, self).__init__(bzrdir.transport,
3530
lock_dir_name='branch_lock')
3534
class SectionMatcher(object):
3535
"""Select sections into a given Store.
3537
This is intended to be used to postpone getting an iterable of sections
3541
def __init__(self, store):
3544
def get_sections(self):
3545
# This is where we require loading the store so we can see all defined
3547
sections = self.store.get_sections()
3548
# Walk the revisions in the order provided
3549
for store, s in sections:
3553
def match(self, section):
3554
"""Does the proposed section match.
3556
:param section: A Section object.
3558
:returns: True if the section matches, False otherwise.
3560
raise NotImplementedError(self.match)
3563
class NameMatcher(SectionMatcher):
3565
def __init__(self, store, section_id):
3566
super(NameMatcher, self).__init__(store)
3567
self.section_id = section_id
3569
def match(self, section):
3570
return section.id == self.section_id
3573
class LocationSection(Section):
3575
def __init__(self, section, extra_path, branch_name=None):
3576
super(LocationSection, self).__init__(section.id, section.options)
3577
self.extra_path = extra_path
3578
if branch_name is None:
3580
self.locals = {'relpath': extra_path,
3581
'basename': urlutils.basename(extra_path),
3582
'branchname': branch_name}
3584
def get(self, name, default=None, expand=True):
3585
value = super(LocationSection, self).get(name, default)
3586
if value is not None and expand:
3587
policy_name = self.get(name + ':policy', None)
3588
policy = _policy_value.get(policy_name, POLICY_NONE)
3589
if policy == POLICY_APPENDPATH:
3590
value = urlutils.join(value, self.extra_path)
3591
# expand section local options right now (since POLICY_APPENDPATH
3592
# will never add options references, it's ok to expand after it).
3594
for is_ref, chunk in iter_option_refs(value):
3596
chunks.append(chunk)
3599
if ref in self.locals:
3600
chunks.append(self.locals[ref])
3602
chunks.append(chunk)
3603
value = ''.join(chunks)
3607
class StartingPathMatcher(SectionMatcher):
3608
"""Select sections for a given location respecting the Store order."""
3610
# FIXME: Both local paths and urls can be used for section names as well as
3611
# ``location`` to stay consistent with ``LocationMatcher`` which itself
3612
# inherited the fuzziness from the previous ``LocationConfig``
3613
# implementation. We probably need to revisit which encoding is allowed for
3614
# both ``location`` and section names and how we normalize
3615
# them. http://pad.lv/85479, http://pad.lv/437009 and http://359320 are
3616
# related too. -- vila 2012-01-04
3618
def __init__(self, store, location):
3619
super(StartingPathMatcher, self).__init__(store)
3620
if location.startswith('file://'):
3621
location = urlutils.local_path_from_url(location)
3622
self.location = location
3624
def get_sections(self):
3625
"""Get all sections matching ``location`` in the store.
3627
The most generic sections are described first in the store, then more
3628
specific ones can be provided for reduced scopes.
3630
The returned section are therefore returned in the reversed order so
3631
the most specific ones can be found first.
3633
location_parts = self.location.rstrip('/').split('/')
3635
# Later sections are more specific, they should be returned first
3636
for _, section in reversed(list(store.get_sections())):
3637
if section.id is None:
3638
# The no-name section is always included if present
3639
yield store, LocationSection(section, self.location)
3641
section_path = section.id
3642
if section_path.startswith('file://'):
3643
# the location is already a local path or URL, convert the
3644
# section id to the same format
3645
section_path = urlutils.local_path_from_url(section_path)
3646
if (self.location.startswith(section_path)
3647
or fnmatch.fnmatch(self.location, section_path)):
3648
section_parts = section_path.rstrip('/').split('/')
3649
extra_path = '/'.join(location_parts[len(section_parts):])
3650
yield store, LocationSection(section, extra_path)
3653
class LocationMatcher(SectionMatcher):
3655
def __init__(self, store, location):
3656
super(LocationMatcher, self).__init__(store)
3657
url, params = urlutils.split_segment_parameters(location)
3658
if location.startswith('file://'):
3659
location = urlutils.local_path_from_url(location)
3660
self.location = location
3661
branch_name = params.get('branch')
3662
if branch_name is None:
3663
self.branch_name = urlutils.basename(self.location)
3665
self.branch_name = urlutils.unescape(branch_name)
3667
def _get_matching_sections(self):
3668
"""Get all sections matching ``location``."""
3669
# We slightly diverge from LocalConfig here by allowing the no-name
3670
# section as the most generic one and the lower priority.
3671
no_name_section = None
3673
# Filter out the no_name_section so _iter_for_location_by_parts can be
3674
# used (it assumes all sections have a name).
3675
for _, section in self.store.get_sections():
3676
if section.id is None:
3677
no_name_section = section
3679
all_sections.append(section)
3680
# Unfortunately _iter_for_location_by_parts deals with section names so
3681
# we have to resync.
3682
filtered_sections = _iter_for_location_by_parts(
3683
[s.id for s in all_sections], self.location)
3684
iter_all_sections = iter(all_sections)
3685
matching_sections = []
3686
if no_name_section is not None:
3687
matching_sections.append(
3688
(0, LocationSection(no_name_section, self.location)))
3689
for section_id, extra_path, length in filtered_sections:
3690
# a section id is unique for a given store so it's safe to take the
3691
# first matching section while iterating. Also, all filtered
3692
# sections are part of 'all_sections' and will always be found
3695
section = iter_all_sections.next()
3696
if section_id == section.id:
3697
section = LocationSection(section, extra_path,
3699
matching_sections.append((length, section))
3701
return matching_sections
3703
def get_sections(self):
3704
# Override the default implementation as we want to change the order
3705
# We want the longest (aka more specific) locations first
3706
sections = sorted(self._get_matching_sections(),
3707
key=lambda match: (match[0], match[1].id),
3709
# Sections mentioning 'ignore_parents' restrict the selection
3710
for _, section in sections:
3711
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3712
ignore = section.get('ignore_parents', None)
3713
if ignore is not None:
3714
ignore = ui.bool_from_string(ignore)
3717
# Finally, we have a valid section
3718
yield self.store, section
3721
# FIXME: _shared_stores should be an attribute of a library state once a
3722
# library_state object is always available.
3724
_shared_stores_at_exit_installed = False
3726
class Stack(object):
3727
"""A stack of configurations where an option can be defined"""
3729
def __init__(self, sections_def, store=None, mutable_section_id=None):
3730
"""Creates a stack of sections with an optional store for changes.
3732
:param sections_def: A list of Section or callables that returns an
3733
iterable of Section. This defines the Sections for the Stack and
3734
can be called repeatedly if needed.
3736
:param store: The optional Store where modifications will be
3737
recorded. If none is specified, no modifications can be done.
3739
:param mutable_section_id: The id of the MutableSection where changes
3740
are recorded. This requires the ``store`` parameter to be
3743
self.sections_def = sections_def
3745
self.mutable_section_id = mutable_section_id
3747
def iter_sections(self):
3748
"""Iterate all the defined sections."""
3749
# Ensuring lazy loading is achieved by delaying section matching (which
3750
# implies querying the persistent storage) until it can't be avoided
3751
# anymore by using callables to describe (possibly empty) section
3753
for sections in self.sections_def:
3754
for store, section in sections():
3755
yield store, section
3757
def get(self, name, expand=True, convert=True):
3758
"""Return the *first* option value found in the sections.
3760
This is where we guarantee that sections coming from Store are loaded
3761
lazily: the loading is delayed until we need to either check that an
3762
option exists or get its value, which in turn may require to discover
3763
in which sections it can be defined. Both of these (section and option
3764
existence) require loading the store (even partially).
3766
:param name: The queried option.
3768
:param expand: Whether options references should be expanded.
3770
:param convert: Whether the option value should be converted from
3771
unicode (do nothing for non-registered options).
3773
:returns: The value of the option.
3775
# FIXME: No caching of options nor sections yet -- vila 20110503
3777
found_store = None # Where the option value has been found
3778
# If the option is registered, it may provide additional info about
3781
opt = option_registry.get(name)
3786
def expand_and_convert(val):
3787
# This may need to be called in different contexts if the value is
3788
# None or ends up being None during expansion or conversion.
3791
if isinstance(val, string_types):
3792
val = self._expand_options_in_string(val)
3794
trace.warning('Cannot expand "%s":'
3795
' %s does not support option expansion'
3796
% (name, type(val)))
3798
val = found_store.unquote(val)
3800
val = opt.convert_from_unicode(found_store, val)
3803
# First of all, check if the environment can override the configuration
3805
if opt is not None and opt.override_from_env:
3806
value = opt.get_override()
3807
value = expand_and_convert(value)
3809
for store, section in self.iter_sections():
3810
value = section.get(name)
3811
if value is not None:
3814
value = expand_and_convert(value)
3815
if opt is not None and value is None:
3816
# If the option is registered, it may provide a default value
3817
value = opt.get_default()
3818
value = expand_and_convert(value)
3819
for hook in ConfigHooks['get']:
3820
hook(self, name, value)
3823
def expand_options(self, string, env=None):
3824
"""Expand option references in the string in the configuration context.
3826
:param string: The string containing option(s) to expand.
3828
:param env: An option dict defining additional configuration options or
3829
overriding existing ones.
3831
:returns: The expanded string.
3833
return self._expand_options_in_string(string, env)
3835
def _expand_options_in_string(self, string, env=None, _refs=None):
3836
"""Expand options in the string in the configuration context.
3838
:param string: The string to be expanded.
3840
:param env: An option dict defining additional configuration options or
3841
overriding existing ones.
3843
:param _refs: Private list (FIFO) containing the options being expanded
3846
:returns: The expanded string.
3849
# Not much to expand there
3852
# What references are currently resolved (to detect loops)
3855
# We need to iterate until no more refs appear ({{foo}} will need two
3856
# iterations for example).
3861
for is_ref, chunk in iter_option_refs(result):
3863
chunks.append(chunk)
3868
raise errors.OptionExpansionLoop(string, _refs)
3870
value = self._expand_option(name, env, _refs)
3872
raise errors.ExpandingUnknownOption(name, string)
3873
chunks.append(value)
3875
result = ''.join(chunks)
3878
def _expand_option(self, name, env, _refs):
3879
if env is not None and name in env:
3880
# Special case, values provided in env takes precedence over
3884
value = self.get(name, expand=False, convert=False)
3885
value = self._expand_options_in_string(value, env, _refs)
3888
def _get_mutable_section(self):
3889
"""Get the MutableSection for the Stack.
3891
This is where we guarantee that the mutable section is lazily loaded:
3892
this means we won't load the corresponding store before setting a value
3893
or deleting an option. In practice the store will often be loaded but
3894
this helps catching some programming errors.
3897
section = store.get_mutable_section(self.mutable_section_id)
3898
return store, section
3900
def set(self, name, value):
3901
"""Set a new value for the option."""
3902
store, section = self._get_mutable_section()
3903
section.set(name, store.quote(value))
3904
for hook in ConfigHooks['set']:
3905
hook(self, name, value)
3907
def remove(self, name):
3908
"""Remove an existing option."""
3909
_, section = self._get_mutable_section()
3910
section.remove(name)
3911
for hook in ConfigHooks['remove']:
3915
# Mostly for debugging use
3916
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3918
def _get_overrides(self):
3919
# FIXME: Hack around library_state.initialize never called
3920
if breezy.global_state is not None:
3921
return breezy.global_state.cmdline_overrides.get_sections()
3924
def get_shared_store(self, store, state=None):
3925
"""Get a known shared store.
3927
Store urls uniquely identify them and are used to ensure a single copy
3928
is shared across all users.
3930
:param store: The store known to the caller.
3932
:param state: The library state where the known stores are kept.
3934
:returns: The store received if it's not a known one, an already known
3938
state = breezy.global_state
3940
global _shared_stores_at_exit_installed
3941
stores = _shared_stores
3942
def save_config_changes():
3943
for k, store in stores.items():
3944
store.save_changes()
3945
if not _shared_stores_at_exit_installed:
3946
# FIXME: Ugly hack waiting for library_state to always be
3947
# available. -- vila 20120731
3949
atexit.register(save_config_changes)
3950
_shared_stores_at_exit_installed = True
3952
stores = state.config_stores
3953
url = store.external_url()
3961
class MemoryStack(Stack):
3962
"""A configuration stack defined from a string.
3964
This is mainly intended for tests and requires no disk resources.
3967
def __init__(self, content=None):
3968
"""Create an in-memory stack from a given content.
3970
It uses a single store based on configobj and support reading and
3973
:param content: The initial content of the store. If None, the store is
3974
not loaded and ``_load_from_string`` can and should be used if
3977
store = IniFileStore()
3978
if content is not None:
3979
store._load_from_string(content)
3980
super(MemoryStack, self).__init__(
3981
[store.get_sections], store)
3984
class _CompatibleStack(Stack):
3985
"""Place holder for compatibility with previous design.
3987
This is intended to ease the transition from the Config-based design to the
3988
Stack-based design and should not be used nor relied upon by plugins.
3990
One assumption made here is that the daughter classes will all use Stores
3991
derived from LockableIniFileStore).
3993
It implements set() and remove () by re-loading the store before applying
3994
the modification and saving it.
3996
The long term plan being to implement a single write by store to save
3997
all modifications, this class should not be used in the interim.
4000
def set(self, name, value):
4003
super(_CompatibleStack, self).set(name, value)
4004
# Force a write to persistent storage
4007
def remove(self, name):
4010
super(_CompatibleStack, self).remove(name)
4011
# Force a write to persistent storage
4015
class GlobalStack(Stack):
4016
"""Global options only stack.
4018
The following sections are queried:
4020
* command-line overrides,
4022
* the 'DEFAULT' section in bazaar.conf
4024
This stack will use the ``DEFAULT`` section in bazaar.conf as its
4029
gstore = self.get_shared_store(GlobalStore())
4030
super(GlobalStack, self).__init__(
4031
[self._get_overrides,
4032
NameMatcher(gstore, 'DEFAULT').get_sections],
4033
gstore, mutable_section_id='DEFAULT')
4036
class LocationStack(Stack):
4037
"""Per-location options falling back to global options stack.
4040
The following sections are queried:
4042
* command-line overrides,
4044
* the sections matching ``location`` in ``locations.conf``, the order being
4045
defined by the number of path components in the section glob, higher
4046
numbers first (from most specific section to most generic).
4048
* the 'DEFAULT' section in bazaar.conf
4050
This stack will use the ``location`` section in locations.conf as its
4054
def __init__(self, location):
4055
"""Make a new stack for a location and global configuration.
4057
:param location: A URL prefix to """
4058
lstore = self.get_shared_store(LocationStore())
4059
if location.startswith('file://'):
4060
location = urlutils.local_path_from_url(location)
4061
gstore = self.get_shared_store(GlobalStore())
4062
super(LocationStack, self).__init__(
4063
[self._get_overrides,
4064
LocationMatcher(lstore, location).get_sections,
4065
NameMatcher(gstore, 'DEFAULT').get_sections],
4066
lstore, mutable_section_id=location)
4069
class BranchStack(Stack):
4070
"""Per-location options falling back to branch then global options stack.
4072
The following sections are queried:
4074
* command-line overrides,
4076
* the sections matching ``location`` in ``locations.conf``, the order being
4077
defined by the number of path components in the section glob, higher
4078
numbers first (from most specific section to most generic),
4080
* the no-name section in branch.conf,
4082
* the ``DEFAULT`` section in ``bazaar.conf``.
4084
This stack will use the no-name section in ``branch.conf`` as its
4088
def __init__(self, branch):
4089
lstore = self.get_shared_store(LocationStore())
4090
bstore = branch._get_config_store()
4091
gstore = self.get_shared_store(GlobalStore())
4092
super(BranchStack, self).__init__(
4093
[self._get_overrides,
4094
LocationMatcher(lstore, branch.base).get_sections,
4095
NameMatcher(bstore, None).get_sections,
4096
NameMatcher(gstore, 'DEFAULT').get_sections],
4098
self.branch = branch
4100
def lock_write(self, token=None):
4101
return self.branch.lock_write(token)
4104
return self.branch.unlock()
4107
def set(self, name, value):
4108
super(BranchStack, self).set(name, value)
4109
# Unlocking the branch will trigger a store.save_changes() so the last
4110
# unlock saves all the changes.
4113
def remove(self, name):
4114
super(BranchStack, self).remove(name)
4115
# Unlocking the branch will trigger a store.save_changes() so the last
4116
# unlock saves all the changes.
4119
class RemoteControlStack(Stack):
4120
"""Remote control-only options stack."""
4122
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
4123
# with the stack used for remote bzr dirs. RemoteControlStack only uses
4124
# control.conf and is used only for stack options.
4126
def __init__(self, bzrdir):
4127
cstore = bzrdir._get_config_store()
4128
super(RemoteControlStack, self).__init__(
4129
[NameMatcher(cstore, None).get_sections],
4131
self.bzrdir = bzrdir
4134
class BranchOnlyStack(Stack):
4135
"""Branch-only options stack."""
4137
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
4138
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
4139
# -- vila 2011-12-16
4141
def __init__(self, branch):
4142
bstore = branch._get_config_store()
4143
super(BranchOnlyStack, self).__init__(
4144
[NameMatcher(bstore, None).get_sections],
4146
self.branch = branch
4148
def lock_write(self, token=None):
4149
return self.branch.lock_write(token)
4152
return self.branch.unlock()
4155
def set(self, name, value):
4156
super(BranchOnlyStack, self).set(name, value)
4157
# Force a write to persistent storage
4158
self.store.save_changes()
4161
def remove(self, name):
4162
super(BranchOnlyStack, self).remove(name)
4163
# Force a write to persistent storage
4164
self.store.save_changes()
4167
class cmd_config(commands.Command):
4168
__doc__ = """Display, set or remove a configuration option.
4170
Display the active value for option NAME.
4172
If --all is specified, NAME is interpreted as a regular expression and all
4173
matching options are displayed mentioning their scope and without resolving
4174
option references in the value). The active value that bzr will take into
4175
account is the first one displayed for each option.
4177
If NAME is not given, --all .* is implied (all options are displayed for the
4180
Setting a value is achieved by using NAME=value without spaces. The value
4181
is set in the most relevant scope and can be checked by displaying the
4184
Removing a value is achieved by using --remove NAME.
4187
takes_args = ['name?']
4191
# FIXME: This should be a registry option so that plugins can register
4192
# their own config files (or not) and will also address
4193
# http://pad.lv/788991 -- vila 20101115
4194
commands.Option('scope', help='Reduce the scope to the specified'
4195
' configuration file.',
4197
commands.Option('all',
4198
help='Display all the defined values for the matching options.',
4200
commands.Option('remove', help='Remove the option from'
4201
' the configuration file.'),
4204
_see_also = ['configuration']
4206
@commands.display_command
4207
def run(self, name=None, all=False, directory=None, scope=None,
4209
if directory is None:
4211
directory = directory_service.directories.dereference(directory)
4212
directory = urlutils.normalize_url(directory)
4214
raise errors.BzrError(
4215
'--all and --remove are mutually exclusive.')
4217
# Delete the option in the given scope
4218
self._remove_config_option(name, directory, scope)
4220
# Defaults to all options
4221
self._show_matching_options('.*', directory, scope)
4224
name, value = name.split('=', 1)
4226
# Display the option(s) value(s)
4228
self._show_matching_options(name, directory, scope)
4230
self._show_value(name, directory, scope)
4233
raise errors.BzrError(
4234
'Only one option can be set.')
4235
# Set the option value
4236
self._set_config_option(name, value, directory, scope)
4238
def _get_stack(self, directory, scope=None, write_access=False):
4239
"""Get the configuration stack specified by ``directory`` and ``scope``.
4241
:param directory: Where the configurations are derived from.
4243
:param scope: A specific config to start from.
4245
:param write_access: Whether a write access to the stack will be
4248
# FIXME: scope should allow access to plugin-specific stacks (even
4249
# reduced to the plugin-specific store), related to
4250
# http://pad.lv/788991 -- vila 2011-11-15
4251
if scope is not None:
4252
if scope == 'bazaar':
4253
return GlobalStack()
4254
elif scope == 'locations':
4255
return LocationStack(directory)
4256
elif scope == 'branch':
4258
controldir.ControlDir.open_containing_tree_or_branch(
4261
self.add_cleanup(br.lock_write().unlock)
4262
return br.get_config_stack()
4263
raise errors.NoSuchConfig(scope)
4267
controldir.ControlDir.open_containing_tree_or_branch(
4270
self.add_cleanup(br.lock_write().unlock)
4271
return br.get_config_stack()
4272
except errors.NotBranchError:
4273
return LocationStack(directory)
4275
def _quote_multiline(self, value):
4277
value = '"""' + value + '"""'
4280
def _show_value(self, name, directory, scope):
4281
conf = self._get_stack(directory, scope)
4282
value = conf.get(name, expand=True, convert=False)
4283
if value is not None:
4284
# Quote the value appropriately
4285
value = self._quote_multiline(value)
4286
self.outf.write('%s\n' % (value,))
4288
raise errors.NoSuchConfigOption(name)
4290
def _show_matching_options(self, name, directory, scope):
4291
name = lazy_regex.lazy_compile(name)
4292
# We want any error in the regexp to be raised *now* so we need to
4293
# avoid the delay introduced by the lazy regexp. But, we still do
4294
# want the nicer errors raised by lazy_regex.
4295
name._compile_and_collapse()
4298
conf = self._get_stack(directory, scope)
4299
for store, section in conf.iter_sections():
4300
for oname in section.iter_option_names():
4301
if name.search(oname):
4302
if cur_store_id != store.id:
4303
# Explain where the options are defined
4304
self.outf.write('%s:\n' % (store.id,))
4305
cur_store_id = store.id
4307
if (section.id is not None and cur_section != section.id):
4308
# Display the section id as it appears in the store
4309
# (None doesn't appear by definition)
4310
self.outf.write(' [%s]\n' % (section.id,))
4311
cur_section = section.id
4312
value = section.get(oname, expand=False)
4313
# Quote the value appropriately
4314
value = self._quote_multiline(value)
4315
self.outf.write(' %s = %s\n' % (oname, value))
4317
def _set_config_option(self, name, value, directory, scope):
4318
conf = self._get_stack(directory, scope, write_access=True)
4319
conf.set(name, value)
4320
# Explicitly save the changes
4321
conf.store.save_changes()
4323
def _remove_config_option(self, name, directory, scope):
4325
raise errors.BzrCommandError(
4326
'--remove expects an option to remove.')
4327
conf = self._get_stack(directory, scope, write_access=True)
4330
# Explicitly save the changes
4331
conf.store.save_changes()
4333
raise errors.NoSuchConfigOption(name)
4338
# We need adapters that can build a Store or a Stack in a test context. Test
4339
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4340
# themselves. The builder will receive a test instance and should return a
4341
# ready-to-use store or stack. Plugins that define new store/stacks can also
4342
# register themselves here to be tested against the tests defined in
4343
# breezy.tests.test_config. Note that the builder can be called multiple times
4344
# for the same test.
4346
# The registered object should be a callable receiving a test instance
4347
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4349
test_store_builder_registry = registry.Registry()
4351
# The registered object should be a callable receiving a test instance
4352
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4354
test_stack_builder_registry = registry.Registry()