1508
2260
configobj[name] = value
1510
2262
configobj.setdefault(section, {})[name] = value
2263
for hook in OldConfigHooks['set']:
2264
hook(self, name, value)
2265
self._set_configobj(configobj)
2267
def remove_option(self, option_name, section_name=None):
2268
configobj = self._get_configobj()
2269
if section_name is None:
2270
del configobj[option_name]
2272
del configobj[section_name][option_name]
2273
for hook in OldConfigHooks['remove']:
2274
hook(self, option_name)
1511
2275
self._set_configobj(configobj)
1513
2277
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2279
f = BytesIO(self._transport.get_bytes(self._filename))
2280
for hook in OldConfigHooks['load']:
1516
2283
except errors.NoSuchFile:
2285
except errors.PermissionDenied as e:
2286
trace.warning("Permission denied while trying to open "
2287
"configuration file %s.", urlutils.unescape_for_display(
2288
urlutils.join(self._transport.base, self._filename), "utf-8"))
2291
def _external_url(self):
2292
return urlutils.join(self._transport.external_url(), self._filename)
1519
2294
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2295
f = self._get_config_file()
2298
conf = ConfigObj(f, encoding='utf-8')
2299
except configobj.ConfigObjError as e:
2300
raise ParseConfigError(e.errors, self._external_url())
2301
except UnicodeDecodeError:
2302
raise ConfigContentError(self._external_url())
1522
2307
def _set_configobj(self, configobj):
1523
out_file = StringIO()
2308
out_file = BytesIO()
1524
2309
configobj.write(out_file)
1525
2310
out_file.seek(0)
1526
2311
self._transport.put_file(self._filename, out_file)
2312
for hook in OldConfigHooks['save']:
2316
class Option(object):
2317
"""An option definition.
2319
The option *values* are stored in config files and found in sections.
2321
Here we define various properties about the option itself, its default
2322
value, how to convert it from stores, what to do when invalid values are
2323
encoutered, in which config files it can be stored.
2326
def __init__(self, name, override_from_env=None,
2327
default=None, default_from_env=None,
2328
help=None, from_unicode=None, invalid=None, unquote=True):
2329
"""Build an option definition.
2331
:param name: the name used to refer to the option.
2333
:param override_from_env: A list of environment variables which can
2334
provide override any configuration setting.
2336
:param default: the default value to use when none exist in the config
2337
stores. This is either a string that ``from_unicode`` will convert
2338
into the proper type, a callable returning a unicode string so that
2339
``from_unicode`` can be used on the return value, or a python
2340
object that can be stringified (so only the empty list is supported
2343
:param default_from_env: A list of environment variables which can
2344
provide a default value. 'default' will be used only if none of the
2345
variables specified here are set in the environment.
2347
:param help: a doc string to explain the option to the user.
2349
:param from_unicode: a callable to convert the unicode string
2350
representing the option value in a store or its default value.
2352
:param invalid: the action to be taken when an invalid value is
2353
encountered in a store. This is called only when from_unicode is
2354
invoked to convert a string and returns None or raise ValueError or
2355
TypeError. Accepted values are: None (ignore invalid values),
2356
'warning' (emit a warning), 'error' (emit an error message and
2359
:param unquote: should the unicode value be unquoted before conversion.
2360
This should be used only when the store providing the values cannot
2361
safely unquote them (see http://pad.lv/906897). It is provided so
2362
daughter classes can handle the quoting themselves.
2364
if override_from_env is None:
2365
override_from_env = []
2366
if default_from_env is None:
2367
default_from_env = []
2369
self.override_from_env = override_from_env
2370
# Convert the default value to a unicode string so all values are
2371
# strings internally before conversion (via from_unicode) is attempted.
2374
elif isinstance(default, list):
2375
# Only the empty list is supported
2377
raise AssertionError(
2378
'Only empty lists are supported as default values')
2380
elif isinstance(default, (binary_type, text_type, bool, int, float)):
2381
# Rely on python to convert strings, booleans and integers
2382
self.default = u'%s' % (default,)
2383
elif callable(default):
2384
self.default = default
2386
# other python objects are not expected
2387
raise AssertionError('%r is not supported as a default value'
2389
self.default_from_env = default_from_env
2391
self.from_unicode = from_unicode
2392
self.unquote = unquote
2393
if invalid and invalid not in ('warning', 'error'):
2394
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2395
self.invalid = invalid
2401
def convert_from_unicode(self, store, unicode_value):
2402
if self.unquote and store is not None and unicode_value is not None:
2403
unicode_value = store.unquote(unicode_value)
2404
if self.from_unicode is None or unicode_value is None:
2405
# Don't convert or nothing to convert
2406
return unicode_value
2408
converted = self.from_unicode(unicode_value)
2409
except (ValueError, TypeError):
2410
# Invalid values are ignored
2412
if converted is None and self.invalid is not None:
2413
# The conversion failed
2414
if self.invalid == 'warning':
2415
trace.warning('Value "%s" is not valid for "%s"',
2416
unicode_value, self.name)
2417
elif self.invalid == 'error':
2418
raise ConfigOptionValueError(self.name, unicode_value)
2421
def get_override(self):
2423
for var in self.override_from_env:
2425
# If the env variable is defined, its value takes precedence
2426
value = os.environ[var].decode(osutils.get_user_encoding())
2432
def get_default(self):
2434
for var in self.default_from_env:
2436
# If the env variable is defined, its value is the default one
2437
value = os.environ[var]
2439
value = value.decode(osutils.get_user_encoding())
2444
# Otherwise, fallback to the value defined at registration
2445
if callable(self.default):
2446
value = self.default()
2447
if not isinstance(value, text_type):
2448
raise AssertionError(
2449
"Callable default value for '%s' should be unicode"
2452
value = self.default
2455
def get_help_topic(self):
2458
def get_help_text(self, additional_see_also=None, plain=True):
2460
from breezy import help_topics
2461
result += help_topics._format_see_also(additional_see_also)
2463
result = help_topics.help_as_plain_text(result)
2467
# Predefined converters to get proper values from store
2469
def bool_from_store(unicode_str):
2470
return ui.bool_from_string(unicode_str)
2473
def int_from_store(unicode_str):
2474
return int(unicode_str)
2477
_unit_suffixes = dict(K=10**3, M=10**6, G=10**9)
2479
def int_SI_from_store(unicode_str):
2480
"""Convert a human readable size in SI units, e.g 10MB into an integer.
2482
Accepted suffixes are K,M,G. It is case-insensitive and may be followed
2483
by a trailing b (i.e. Kb, MB). This is intended to be practical and not
2486
:return Integer, expanded to its base-10 value if a proper SI unit is
2487
found, None otherwise.
2489
regexp = "^(\d+)(([" + ''.join(_unit_suffixes) + "])b?)?$"
2490
p = re.compile(regexp, re.IGNORECASE)
2491
m = p.match(unicode_str)
2494
val, _, unit = m.groups()
2498
coeff = _unit_suffixes[unit.upper()]
2500
raise ValueError(gettext('{0} is not an SI unit.').format(unit))
2505
def float_from_store(unicode_str):
2506
return float(unicode_str)
2509
# Use an empty dict to initialize an empty configobj avoiding all parsing and
2511
_list_converter_config = configobj.ConfigObj(
2512
{}, encoding='utf-8', list_values=True, interpolation=False)
2515
class ListOption(Option):
2517
def __init__(self, name, default=None, default_from_env=None,
2518
help=None, invalid=None):
2519
"""A list Option definition.
2521
This overrides the base class so the conversion from a unicode string
2522
can take quoting into account.
2524
super(ListOption, self).__init__(
2525
name, default=default, default_from_env=default_from_env,
2526
from_unicode=self.from_unicode, help=help,
2527
invalid=invalid, unquote=False)
2529
def from_unicode(self, unicode_str):
2530
if not isinstance(unicode_str, string_types):
2532
# Now inject our string directly as unicode. All callers got their
2533
# value from configobj, so values that need to be quoted are already
2535
_list_converter_config.reset()
2536
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2537
maybe_list = _list_converter_config['list']
2538
if isinstance(maybe_list, string_types):
2540
# A single value, most probably the user forgot (or didn't care
2541
# to add) the final ','
2544
# The empty string, convert to empty list
2547
# We rely on ConfigObj providing us with a list already
2552
class RegistryOption(Option):
2553
"""Option for a choice from a registry."""
2555
def __init__(self, name, registry, default_from_env=None,
2556
help=None, invalid=None):
2557
"""A registry based Option definition.
2559
This overrides the base class so the conversion from a unicode string
2560
can take quoting into account.
2562
super(RegistryOption, self).__init__(
2563
name, default=lambda: unicode(registry.default_key),
2564
default_from_env=default_from_env,
2565
from_unicode=self.from_unicode, help=help,
2566
invalid=invalid, unquote=False)
2567
self.registry = registry
2569
def from_unicode(self, unicode_str):
2570
if not isinstance(unicode_str, string_types):
2573
return self.registry.get(unicode_str)
2576
"Invalid value %s for %s."
2577
"See help for a list of possible values." % (unicode_str,
2582
ret = [self._help, "\n\nThe following values are supported:\n"]
2583
for key in self.registry.keys():
2584
ret.append(" %s - %s\n" % (key, self.registry.get_help(key)))
2588
_option_ref_re = lazy_regex.lazy_compile('({[^\d\W](?:\.\w|-\w|\w)*})')
2589
"""Describes an expandable option reference.
2591
We want to match the most embedded reference first.
2593
I.e. for '{{foo}}' we will get '{foo}',
2594
for '{bar{baz}}' we will get '{baz}'
2597
def iter_option_refs(string):
2598
# Split isolate refs so every other chunk is a ref
2600
for chunk in _option_ref_re.split(string):
2605
class OptionRegistry(registry.Registry):
2606
"""Register config options by their name.
2608
This overrides ``registry.Registry`` to simplify registration by acquiring
2609
some information from the option object itself.
2612
def _check_option_name(self, option_name):
2613
"""Ensures an option name is valid.
2615
:param option_name: The name to validate.
2617
if _option_ref_re.match('{%s}' % option_name) is None:
2618
raise IllegalOptionName(option_name)
2620
def register(self, option):
2621
"""Register a new option to its name.
2623
:param option: The option to register. Its name is used as the key.
2625
self._check_option_name(option.name)
2626
super(OptionRegistry, self).register(option.name, option,
2629
def register_lazy(self, key, module_name, member_name):
2630
"""Register a new option to be loaded on request.
2632
:param key: the key to request the option later. Since the registration
2633
is lazy, it should be provided and match the option name.
2635
:param module_name: the python path to the module. Such as 'os.path'.
2637
:param member_name: the member of the module to return. If empty or
2638
None, get() will return the module itself.
2640
self._check_option_name(key)
2641
super(OptionRegistry, self).register_lazy(key,
2642
module_name, member_name)
2644
def get_help(self, key=None):
2645
"""Get the help text associated with the given key"""
2646
option = self.get(key)
2647
the_help = option.help
2648
if callable(the_help):
2649
return the_help(self, key)
2653
option_registry = OptionRegistry()
2656
# Registered options in lexicographical order
2658
option_registry.register(
2659
Option('append_revisions_only',
2660
default=None, from_unicode=bool_from_store, invalid='warning',
2662
Whether to only append revisions to the mainline.
2664
If this is set to true, then it is not possible to change the
2665
existing mainline of the branch.
2667
option_registry.register(
2668
ListOption('acceptable_keys',
2671
List of GPG key patterns which are acceptable for verification.
2673
option_registry.register(
2674
Option('add.maximum_file_size',
2675
default=u'20MB', from_unicode=int_SI_from_store,
2677
Size above which files should be added manually.
2679
Files below this size are added automatically when using ``bzr add`` without
2682
A negative value means disable the size check.
2684
option_registry.register(
2686
default=None, from_unicode=bool_from_store,
2688
Is the branch bound to ``bound_location``.
2690
If set to "True", the branch should act as a checkout, and push each commit to
2691
the bound_location. This option is normally set by ``bind``/``unbind``.
2693
See also: bound_location.
2695
option_registry.register(
2696
Option('bound_location',
2699
The location that commits should go to when acting as a checkout.
2701
This option is normally set by ``bind``.
2705
option_registry.register(
2706
Option('branch.fetch_tags', default=False, from_unicode=bool_from_store,
2708
Whether revisions associated with tags should be fetched.
2710
option_registry.register_lazy(
2711
'bzr.transform.orphan_policy', 'breezy.transform', 'opt_transform_orphan')
2712
option_registry.register(
2713
Option('bzr.workingtree.worth_saving_limit', default=10,
2714
from_unicode=int_from_store, invalid='warning',
2716
How many changes before saving the dirstate.
2718
-1 means that we will never rewrite the dirstate file for only
2719
stat-cache changes. Regardless of this setting, we will always rewrite
2720
the dirstate file if a file is added/removed/renamed/etc. This flag only
2721
affects the behavior of updating the dirstate file after we notice that
2722
a file has been touched.
2724
option_registry.register(
2725
Option('bugtracker', default=None,
2727
Default bug tracker to use.
2729
This bug tracker will be used for example when marking bugs
2730
as fixed using ``bzr commit --fixes``, if no explicit
2731
bug tracker was specified.
2733
option_registry.register(
2734
Option('check_signatures', default=CHECK_IF_POSSIBLE,
2735
from_unicode=signature_policy_from_unicode,
2737
GPG checking policy.
2739
Possible values: require, ignore, check-available (default)
2741
this option will control whether bzr will require good gpg
2742
signatures, ignore them, or check them if they are
2745
option_registry.register(
2746
Option('child_submit_format',
2747
help='''The preferred format of submissions to this branch.'''))
2748
option_registry.register(
2749
Option('child_submit_to',
2750
help='''Where submissions to this branch are mailed to.'''))
2751
option_registry.register(
2752
Option('create_signatures', default=SIGN_WHEN_REQUIRED,
2753
from_unicode=signing_policy_from_unicode,
2757
Possible values: always, never, when-required (default)
2759
This option controls whether bzr will always create
2760
gpg signatures or not on commits.
2762
option_registry.register(
2763
Option('dirstate.fdatasync', default=True,
2764
from_unicode=bool_from_store,
2766
Flush dirstate changes onto physical disk?
2768
If true (default), working tree metadata changes are flushed through the
2769
OS buffers to physical disk. This is somewhat slower, but means data
2770
should not be lost if the machine crashes. See also repository.fdatasync.
2772
option_registry.register(
2773
ListOption('debug_flags', default=[],
2774
help='Debug flags to activate.'))
2775
option_registry.register(
2776
Option('default_format', default='2a',
2777
help='Format used when creating branches.'))
2778
option_registry.register(
2779
Option('dpush_strict', default=None,
2780
from_unicode=bool_from_store,
2782
The default value for ``dpush --strict``.
2784
If present, defines the ``--strict`` option default value for checking
2785
uncommitted changes before pushing into a different VCS without any
2786
custom bzr metadata.
2788
option_registry.register(
2790
help='The command called to launch an editor to enter a message.'))
2791
option_registry.register(
2792
Option('email', override_from_env=['BRZ_EMAIL'], default=default_email,
2793
help='The users identity'))
2794
option_registry.register(
2795
Option('gpg_signing_key',
2798
GPG key to use for signing.
2800
This defaults to the first key associated with the users email.
2802
option_registry.register(
2804
help='Language to translate messages into.'))
2805
option_registry.register(
2806
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2808
Steal locks that appears to be dead.
2810
If set to True, bzr will check if a lock is supposed to be held by an
2811
active process from the same user on the same machine. If the user and
2812
machine match, but no process with the given PID is active, then bzr
2813
will automatically break the stale lock, and create a new lock for
2815
Otherwise, bzr will prompt as normal to break the lock.
2817
option_registry.register(
2818
Option('log_format', default='long',
2820
Log format to use when displaying revisions.
2822
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2823
may be provided by plugins.
2825
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2827
option_registry.register(
2828
Option('output_encoding',
2829
help= 'Unicode encoding for output'
2830
' (terminal encoding if not specified).'))
2831
option_registry.register(
2832
Option('parent_location',
2835
The location of the default branch for pull or merge.
2837
This option is normally set when creating a branch, the first ``pull`` or by
2838
``pull --remember``.
2840
option_registry.register(
2841
Option('post_commit', default=None,
2843
Post commit functions.
2845
An ordered list of python functions to call, separated by spaces.
2847
Each function takes branch, rev_id as parameters.
2849
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2851
option_registry.register(
2852
Option('public_branch',
2855
A publically-accessible version of this branch.
2857
This implies that the branch setting this option is not publically-accessible.
2858
Used and set by ``bzr send``.
2860
option_registry.register(
2861
Option('push_location',
2864
The location of the default branch for push.
2866
This option is normally set by the first ``push`` or ``push --remember``.
2868
option_registry.register(
2869
Option('push_strict', default=None,
2870
from_unicode=bool_from_store,
2872
The default value for ``push --strict``.
2874
If present, defines the ``--strict`` option default value for checking
2875
uncommitted changes before sending a merge directive.
2877
option_registry.register(
2878
Option('repository.fdatasync', default=True,
2879
from_unicode=bool_from_store,
2881
Flush repository changes onto physical disk?
2883
If true (default), repository changes are flushed through the OS buffers
2884
to physical disk. This is somewhat slower, but means data should not be
2885
lost if the machine crashes. See also dirstate.fdatasync.
2887
option_registry.register_lazy('smtp_server',
2888
'breezy.smtp_connection', 'smtp_server')
2889
option_registry.register_lazy('smtp_password',
2890
'breezy.smtp_connection', 'smtp_password')
2891
option_registry.register_lazy('smtp_username',
2892
'breezy.smtp_connection', 'smtp_username')
2893
option_registry.register(
2894
Option('selftest.timeout',
2896
from_unicode=int_from_store,
2897
help='Abort selftest if one test takes longer than this many seconds',
2900
option_registry.register(
2901
Option('send_strict', default=None,
2902
from_unicode=bool_from_store,
2904
The default value for ``send --strict``.
2906
If present, defines the ``--strict`` option default value for checking
2907
uncommitted changes before sending a bundle.
2910
option_registry.register(
2911
Option('serve.client_timeout',
2912
default=300.0, from_unicode=float_from_store,
2913
help="If we wait for a new request from a client for more than"
2914
" X seconds, consider the client idle, and hangup."))
2915
option_registry.register(
2916
Option('stacked_on_location',
2918
help="""The location where this branch is stacked on."""))
2919
option_registry.register(
2920
Option('submit_branch',
2923
The branch you intend to submit your current work to.
2925
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2926
by the ``submit:`` revision spec.
2928
option_registry.register(
2930
help='''Where submissions from this branch are mailed to.'''))
2931
option_registry.register(
2932
ListOption('suppress_warnings',
2934
help="List of warning classes to suppress."))
2935
option_registry.register(
2936
Option('validate_signatures_in_log', default=False,
2937
from_unicode=bool_from_store, invalid='warning',
2938
help='''Whether to validate signatures in brz log.'''))
2939
option_registry.register_lazy('ssl.ca_certs',
2940
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_ca_certs')
2942
option_registry.register_lazy('ssl.cert_reqs',
2943
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_cert_reqs')
2946
class Section(object):
2947
"""A section defines a dict of option name => value.
2949
This is merely a read-only dict which can add some knowledge about the
2950
options. It is *not* a python dict object though and doesn't try to mimic
2954
def __init__(self, section_id, options):
2955
self.id = section_id
2956
# We re-use the dict-like object received
2957
self.options = options
2959
def get(self, name, default=None, expand=True):
2960
return self.options.get(name, default)
2962
def iter_option_names(self):
2963
for k in self.options.keys():
2967
# Mostly for debugging use
2968
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2971
_NewlyCreatedOption = object()
2972
"""Was the option created during the MutableSection lifetime"""
2973
_DeletedOption = object()
2974
"""Was the option deleted during the MutableSection lifetime"""
2977
class MutableSection(Section):
2978
"""A section allowing changes and keeping track of the original values."""
2980
def __init__(self, section_id, options):
2981
super(MutableSection, self).__init__(section_id, options)
2982
self.reset_changes()
2984
def set(self, name, value):
2985
if name not in self.options:
2986
# This is a new option
2987
self.orig[name] = _NewlyCreatedOption
2988
elif name not in self.orig:
2989
self.orig[name] = self.get(name, None)
2990
self.options[name] = value
2992
def remove(self, name):
2993
if name not in self.orig and name in self.options:
2994
self.orig[name] = self.get(name, None)
2995
del self.options[name]
2997
def reset_changes(self):
3000
def apply_changes(self, dirty, store):
3001
"""Apply option value changes.
3003
``self`` has been reloaded from the persistent storage. ``dirty``
3004
contains the changes made since the previous loading.
3006
:param dirty: the mutable section containing the changes.
3008
:param store: the store containing the section
3010
for k, expected in dirty.orig.items():
3011
actual = dirty.get(k, _DeletedOption)
3012
reloaded = self.get(k, _NewlyCreatedOption)
3013
if actual is _DeletedOption:
3014
if k in self.options:
3018
# Report concurrent updates in an ad-hoc way. This should only
3019
# occurs when different processes try to update the same option
3020
# which is not supported (as in: the config framework is not meant
3021
# to be used as a sharing mechanism).
3022
if expected != reloaded:
3023
if actual is _DeletedOption:
3024
actual = '<DELETED>'
3025
if reloaded is _NewlyCreatedOption:
3026
reloaded = '<CREATED>'
3027
if expected is _NewlyCreatedOption:
3028
expected = '<CREATED>'
3029
# Someone changed the value since we get it from the persistent
3031
trace.warning(gettext(
3032
"Option {0} in section {1} of {2} was changed"
3033
" from {3} to {4}. The {5} value will be saved.".format(
3034
k, self.id, store.external_url(), expected,
3036
# No need to keep track of these changes
3037
self.reset_changes()
3040
class Store(object):
3041
"""Abstract interface to persistent storage for configuration options."""
3043
readonly_section_class = Section
3044
mutable_section_class = MutableSection
3047
# Which sections need to be saved (by section id). We use a dict here
3048
# so the dirty sections can be shared by multiple callers.
3049
self.dirty_sections = {}
3051
def is_loaded(self):
3052
"""Returns True if the Store has been loaded.
3054
This is used to implement lazy loading and ensure the persistent
3055
storage is queried only when needed.
3057
raise NotImplementedError(self.is_loaded)
3060
"""Loads the Store from persistent storage."""
3061
raise NotImplementedError(self.load)
3063
def _load_from_string(self, bytes):
3064
"""Create a store from a string in configobj syntax.
3066
:param bytes: A string representing the file content.
3068
raise NotImplementedError(self._load_from_string)
3071
"""Unloads the Store.
3073
This should make is_loaded() return False. This is used when the caller
3074
knows that the persistent storage has changed or may have change since
3077
raise NotImplementedError(self.unload)
3079
def quote(self, value):
3080
"""Quote a configuration option value for storing purposes.
3082
This allows Stacks to present values as they will be stored.
3086
def unquote(self, value):
3087
"""Unquote a configuration option value into unicode.
3089
The received value is quoted as stored.
3094
"""Saves the Store to persistent storage."""
3095
raise NotImplementedError(self.save)
3097
def _need_saving(self):
3098
for s in self.dirty_sections.values():
3100
# At least one dirty section contains a modification
3104
def apply_changes(self, dirty_sections):
3105
"""Apply changes from dirty sections while checking for coherency.
3107
The Store content is discarded and reloaded from persistent storage to
3108
acquire up-to-date values.
3110
Dirty sections are MutableSection which kept track of the value they
3111
are expected to update.
3113
# We need an up-to-date version from the persistent storage, unload the
3114
# store. The reload will occur when needed (triggered by the first
3115
# get_mutable_section() call below.
3117
# Apply the changes from the preserved dirty sections
3118
for section_id, dirty in dirty_sections.items():
3119
clean = self.get_mutable_section(section_id)
3120
clean.apply_changes(dirty, self)
3121
# Everything is clean now
3122
self.dirty_sections = {}
3124
def save_changes(self):
3125
"""Saves the Store to persistent storage if changes occurred.
3127
Apply the changes recorded in the mutable sections to a store content
3128
refreshed from persistent storage.
3130
raise NotImplementedError(self.save_changes)
3132
def external_url(self):
3133
raise NotImplementedError(self.external_url)
3135
def get_sections(self):
3136
"""Returns an ordered iterable of existing sections.
3138
:returns: An iterable of (store, section).
3140
raise NotImplementedError(self.get_sections)
3142
def get_mutable_section(self, section_id=None):
3143
"""Returns the specified mutable section.
3145
:param section_id: The section identifier
3147
raise NotImplementedError(self.get_mutable_section)
3150
# Mostly for debugging use
3151
return "<config.%s(%s)>" % (self.__class__.__name__,
3152
self.external_url())
3155
class CommandLineStore(Store):
3156
"A store to carry command line overrides for the config options."""
3158
def __init__(self, opts=None):
3159
super(CommandLineStore, self).__init__()
3166
# The dict should be cleared but not replaced so it can be shared.
3167
self.options.clear()
3169
def _from_cmdline(self, overrides):
3170
# Reset before accepting new definitions
3172
for over in overrides:
3174
name, value = over.split('=', 1)
3176
raise errors.BzrCommandError(
3177
gettext("Invalid '%s', should be of the form 'name=value'")
3179
self.options[name] = value
3181
def external_url(self):
3182
# Not an url but it makes debugging easier and is never needed
3186
def get_sections(self):
3187
yield self, self.readonly_section_class(None, self.options)
3190
class IniFileStore(Store):
3191
"""A config Store using ConfigObj for storage.
3193
:ivar _config_obj: Private member to hold the ConfigObj instance used to
3194
serialize/deserialize the config file.
3198
"""A config Store using ConfigObj for storage.
3200
super(IniFileStore, self).__init__()
3201
self._config_obj = None
3203
def is_loaded(self):
3204
return self._config_obj != None
3207
self._config_obj = None
3208
self.dirty_sections = {}
3210
def _load_content(self):
3211
"""Load the config file bytes.
3213
This should be provided by subclasses
3215
:return: Byte string
3217
raise NotImplementedError(self._load_content)
3219
def _save_content(self, content):
3220
"""Save the config file bytes.
3222
This should be provided by subclasses
3224
:param content: Config file bytes to write
3226
raise NotImplementedError(self._save_content)
3229
"""Load the store from the associated file."""
3230
if self.is_loaded():
3232
content = self._load_content()
3233
self._load_from_string(content)
3234
for hook in ConfigHooks['load']:
3237
def _load_from_string(self, bytes):
3238
"""Create a config store from a string.
3240
:param bytes: A string representing the file content.
3242
if self.is_loaded():
3243
raise AssertionError('Already loaded: %r' % (self._config_obj,))
3244
co_input = BytesIO(bytes)
3246
# The config files are always stored utf8-encoded
3247
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3249
except configobj.ConfigObjError as e:
3250
self._config_obj = None
3251
raise ParseConfigError(e.errors, self.external_url())
3252
except UnicodeDecodeError:
3253
raise ConfigContentError(self.external_url())
3255
def save_changes(self):
3256
if not self.is_loaded():
3259
if not self._need_saving():
3261
# Preserve the current version
3262
dirty_sections = self.dirty_sections.copy()
3263
self.apply_changes(dirty_sections)
3264
# Save to the persistent storage
3268
if not self.is_loaded():
3272
self._config_obj.write(out)
3273
self._save_content(out.getvalue())
3274
for hook in ConfigHooks['save']:
3277
def get_sections(self):
3278
"""Get the configobj section in the file order.
3280
:returns: An iterable of (store, section).
3282
# We need a loaded store
3285
except (errors.NoSuchFile, errors.PermissionDenied):
3286
# If the file can't be read, there is no sections
3288
cobj = self._config_obj
3290
yield self, self.readonly_section_class(None, cobj)
3291
for section_name in cobj.sections:
3293
self.readonly_section_class(section_name,
3294
cobj[section_name]))
3296
def get_mutable_section(self, section_id=None):
3297
# We need a loaded store
3300
except errors.NoSuchFile:
3301
# The file doesn't exist, let's pretend it was empty
3302
self._load_from_string(b'')
3303
if section_id in self.dirty_sections:
3304
# We already created a mutable section for this id
3305
return self.dirty_sections[section_id]
3306
if section_id is None:
3307
section = self._config_obj
3309
section = self._config_obj.setdefault(section_id, {})
3310
mutable_section = self.mutable_section_class(section_id, section)
3311
# All mutable sections can become dirty
3312
self.dirty_sections[section_id] = mutable_section
3313
return mutable_section
3315
def quote(self, value):
3317
# configobj conflates automagical list values and quoting
3318
self._config_obj.list_values = True
3319
return self._config_obj._quote(value)
3321
self._config_obj.list_values = False
3323
def unquote(self, value):
3324
if value and isinstance(value, string_types):
3325
# _unquote doesn't handle None nor empty strings nor anything that
3326
# is not a string, really.
3327
value = self._config_obj._unquote(value)
3330
def external_url(self):
3331
# Since an IniFileStore can be used without a file (at least in tests),
3332
# it's better to provide something than raising a NotImplementedError.
3333
# All daughter classes are supposed to provide an implementation
3335
return 'In-Process Store, no URL'
3338
class TransportIniFileStore(IniFileStore):
3339
"""IniFileStore that loads files from a transport.
3341
:ivar transport: The transport object where the config file is located.
3343
:ivar file_name: The config file basename in the transport directory.
3346
def __init__(self, transport, file_name):
3347
"""A Store using a ini file on a Transport
3349
:param transport: The transport object where the config file is located.
3350
:param file_name: The config file basename in the transport directory.
3352
super(TransportIniFileStore, self).__init__()
3353
self.transport = transport
3354
self.file_name = file_name
3356
def _load_content(self):
3358
return self.transport.get_bytes(self.file_name)
3359
except errors.PermissionDenied:
3360
trace.warning("Permission denied while trying to load "
3361
"configuration store %s.", self.external_url())
3364
def _save_content(self, content):
3365
self.transport.put_bytes(self.file_name, content)
3367
def external_url(self):
3368
# FIXME: external_url should really accepts an optional relpath
3369
# parameter (bug #750169) :-/ -- vila 2011-04-04
3370
# The following will do in the interim but maybe we don't want to
3371
# expose a path here but rather a config ID and its associated
3372
# object </hand wawe>.
3373
return urlutils.join(
3374
self.transport.external_url(), urlutils.escape(self.file_name))
3377
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3378
# unlockable stores for use with objects that can already ensure the locking
3379
# (think branches). If different stores (not based on ConfigObj) are created,
3380
# they may face the same issue.
3383
class LockableIniFileStore(TransportIniFileStore):
3384
"""A ConfigObjStore using locks on save to ensure store integrity."""
3386
def __init__(self, transport, file_name, lock_dir_name=None):
3387
"""A config Store using ConfigObj for storage.
3389
:param transport: The transport object where the config file is located.
3391
:param file_name: The config file basename in the transport directory.
3393
if lock_dir_name is None:
3394
lock_dir_name = 'lock'
3395
self.lock_dir_name = lock_dir_name
3396
super(LockableIniFileStore, self).__init__(transport, file_name)
3397
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3399
def lock_write(self, token=None):
3400
"""Takes a write lock in the directory containing the config file.
3402
If the directory doesn't exist it is created.
3404
# FIXME: This doesn't check the ownership of the created directories as
3405
# ensure_config_dir_exists does. It should if the transport is local
3406
# -- vila 2011-04-06
3407
self.transport.create_prefix()
3408
return self._lock.lock_write(token)
3413
def break_lock(self):
3414
self._lock.break_lock()
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
# FIXME: Hack around library_state.initialize never called
3869
if breezy.global_state is not None:
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
state = breezy.global_state
3889
global _shared_stores_at_exit_installed
3890
stores = _shared_stores
3891
def save_config_changes():
3892
for k, store in stores.items():
3893
store.save_changes()
3894
if not _shared_stores_at_exit_installed:
3895
# FIXME: Ugly hack waiting for library_state to always be
3896
# available. -- vila 20120731
3898
atexit.register(save_config_changes)
3899
_shared_stores_at_exit_installed = True
3901
stores = state.config_stores
3902
url = store.external_url()
3910
class MemoryStack(Stack):
3911
"""A configuration stack defined from a string.
3913
This is mainly intended for tests and requires no disk resources.
3916
def __init__(self, content=None):
3917
"""Create an in-memory stack from a given content.
3919
It uses a single store based on configobj and support reading and
3922
:param content: The initial content of the store. If None, the store is
3923
not loaded and ``_load_from_string`` can and should be used if
3926
store = IniFileStore()
3927
if content is not None:
3928
store._load_from_string(content)
3929
super(MemoryStack, self).__init__(
3930
[store.get_sections], store)
3933
class _CompatibleStack(Stack):
3934
"""Place holder for compatibility with previous design.
3936
This is intended to ease the transition from the Config-based design to the
3937
Stack-based design and should not be used nor relied upon by plugins.
3939
One assumption made here is that the daughter classes will all use Stores
3940
derived from LockableIniFileStore).
3942
It implements set() and remove () by re-loading the store before applying
3943
the modification and saving it.
3945
The long term plan being to implement a single write by store to save
3946
all modifications, this class should not be used in the interim.
3949
def set(self, name, value):
3952
super(_CompatibleStack, self).set(name, value)
3953
# Force a write to persistent storage
3956
def remove(self, name):
3959
super(_CompatibleStack, self).remove(name)
3960
# Force a write to persistent storage
3964
class GlobalStack(Stack):
3965
"""Global options only stack.
3967
The following sections are queried:
3969
* command-line overrides,
3971
* the 'DEFAULT' section in bazaar.conf
3973
This stack will use the ``DEFAULT`` section in bazaar.conf as its
3978
gstore = self.get_shared_store(GlobalStore())
3979
super(GlobalStack, self).__init__(
3980
[self._get_overrides,
3981
NameMatcher(gstore, 'DEFAULT').get_sections],
3982
gstore, mutable_section_id='DEFAULT')
3985
class LocationStack(Stack):
3986
"""Per-location options falling back to global options stack.
3989
The following sections are queried:
3991
* command-line overrides,
3993
* the sections matching ``location`` in ``locations.conf``, the order being
3994
defined by the number of path components in the section glob, higher
3995
numbers first (from most specific section to most generic).
3997
* the 'DEFAULT' section in bazaar.conf
3999
This stack will use the ``location`` section in locations.conf as its
4003
def __init__(self, location):
4004
"""Make a new stack for a location and global configuration.
4006
:param location: A URL prefix to """
4007
lstore = self.get_shared_store(LocationStore())
4008
if location.startswith('file://'):
4009
location = urlutils.local_path_from_url(location)
4010
gstore = self.get_shared_store(GlobalStore())
4011
super(LocationStack, self).__init__(
4012
[self._get_overrides,
4013
LocationMatcher(lstore, location).get_sections,
4014
NameMatcher(gstore, 'DEFAULT').get_sections],
4015
lstore, mutable_section_id=location)
4018
class BranchStack(Stack):
4019
"""Per-location options falling back to branch then global options stack.
4021
The following sections are queried:
4023
* command-line overrides,
4025
* the sections matching ``location`` in ``locations.conf``, the order being
4026
defined by the number of path components in the section glob, higher
4027
numbers first (from most specific section to most generic),
4029
* the no-name section in branch.conf,
4031
* the ``DEFAULT`` section in ``bazaar.conf``.
4033
This stack will use the no-name section in ``branch.conf`` as its
4037
def __init__(self, branch):
4038
lstore = self.get_shared_store(LocationStore())
4039
bstore = branch._get_config_store()
4040
gstore = self.get_shared_store(GlobalStore())
4041
super(BranchStack, self).__init__(
4042
[self._get_overrides,
4043
LocationMatcher(lstore, branch.base).get_sections,
4044
NameMatcher(bstore, None).get_sections,
4045
NameMatcher(gstore, 'DEFAULT').get_sections],
4047
self.branch = branch
4049
def lock_write(self, token=None):
4050
return self.branch.lock_write(token)
4053
return self.branch.unlock()
4056
def set(self, name, value):
4057
super(BranchStack, self).set(name, value)
4058
# Unlocking the branch will trigger a store.save_changes() so the last
4059
# unlock saves all the changes.
4062
def remove(self, name):
4063
super(BranchStack, self).remove(name)
4064
# Unlocking the branch will trigger a store.save_changes() so the last
4065
# unlock saves all the changes.
4068
class RemoteControlStack(Stack):
4069
"""Remote control-only options stack."""
4071
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
4072
# with the stack used for remote bzr dirs. RemoteControlStack only uses
4073
# control.conf and is used only for stack options.
4075
def __init__(self, bzrdir):
4076
cstore = bzrdir._get_config_store()
4077
super(RemoteControlStack, self).__init__(
4078
[NameMatcher(cstore, None).get_sections],
4080
self.controldir = bzrdir
4083
class BranchOnlyStack(Stack):
4084
"""Branch-only options stack."""
4086
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
4087
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
4088
# -- vila 2011-12-16
4090
def __init__(self, branch):
4091
bstore = branch._get_config_store()
4092
super(BranchOnlyStack, self).__init__(
4093
[NameMatcher(bstore, None).get_sections],
4095
self.branch = branch
4097
def lock_write(self, token=None):
4098
return self.branch.lock_write(token)
4101
return self.branch.unlock()
4104
def set(self, name, value):
4105
super(BranchOnlyStack, self).set(name, value)
4106
# Force a write to persistent storage
4107
self.store.save_changes()
4110
def remove(self, name):
4111
super(BranchOnlyStack, self).remove(name)
4112
# Force a write to persistent storage
4113
self.store.save_changes()
4116
class cmd_config(commands.Command):
4117
__doc__ = """Display, set or remove a configuration option.
4119
Display the active value for option NAME.
4121
If --all is specified, NAME is interpreted as a regular expression and all
4122
matching options are displayed mentioning their scope and without resolving
4123
option references in the value). The active value that bzr will take into
4124
account is the first one displayed for each option.
4126
If NAME is not given, --all .* is implied (all options are displayed for the
4129
Setting a value is achieved by using NAME=value without spaces. The value
4130
is set in the most relevant scope and can be checked by displaying the
4133
Removing a value is achieved by using --remove NAME.
4136
takes_args = ['name?']
4140
# FIXME: This should be a registry option so that plugins can register
4141
# their own config files (or not) and will also address
4142
# http://pad.lv/788991 -- vila 20101115
4143
commands.Option('scope', help='Reduce the scope to the specified'
4144
' configuration file.',
4146
commands.Option('all',
4147
help='Display all the defined values for the matching options.',
4149
commands.Option('remove', help='Remove the option from'
4150
' the configuration file.'),
4153
_see_also = ['configuration']
4155
@commands.display_command
4156
def run(self, name=None, all=False, directory=None, scope=None,
4158
if directory is None:
4160
directory = directory_service.directories.dereference(directory)
4161
directory = urlutils.normalize_url(directory)
4163
raise errors.BzrError(
4164
'--all and --remove are mutually exclusive.')
4166
# Delete the option in the given scope
4167
self._remove_config_option(name, directory, scope)
4169
# Defaults to all options
4170
self._show_matching_options('.*', directory, scope)
4173
name, value = name.split('=', 1)
4175
# Display the option(s) value(s)
4177
self._show_matching_options(name, directory, scope)
4179
self._show_value(name, directory, scope)
4182
raise errors.BzrError(
4183
'Only one option can be set.')
4184
# Set the option value
4185
self._set_config_option(name, value, directory, scope)
4187
def _get_stack(self, directory, scope=None, write_access=False):
4188
"""Get the configuration stack specified by ``directory`` and ``scope``.
4190
:param directory: Where the configurations are derived from.
4192
:param scope: A specific config to start from.
4194
:param write_access: Whether a write access to the stack will be
4197
# FIXME: scope should allow access to plugin-specific stacks (even
4198
# reduced to the plugin-specific store), related to
4199
# http://pad.lv/788991 -- vila 2011-11-15
4200
if scope is not None:
4201
if scope == 'breezy':
4202
return GlobalStack()
4203
elif scope == 'locations':
4204
return LocationStack(directory)
4205
elif scope == 'branch':
4207
controldir.ControlDir.open_containing_tree_or_branch(
4210
self.add_cleanup(br.lock_write().unlock)
4211
return br.get_config_stack()
4212
raise NoSuchConfig(scope)
4216
controldir.ControlDir.open_containing_tree_or_branch(
4219
self.add_cleanup(br.lock_write().unlock)
4220
return br.get_config_stack()
4221
except errors.NotBranchError:
4222
return LocationStack(directory)
4224
def _quote_multiline(self, value):
4226
value = '"""' + value + '"""'
4229
def _show_value(self, name, directory, scope):
4230
conf = self._get_stack(directory, scope)
4231
value = conf.get(name, expand=True, convert=False)
4232
if value is not None:
4233
# Quote the value appropriately
4234
value = self._quote_multiline(value)
4235
self.outf.write('%s\n' % (value,))
4237
raise NoSuchConfigOption(name)
4239
def _show_matching_options(self, name, directory, scope):
4240
name = lazy_regex.lazy_compile(name)
4241
# We want any error in the regexp to be raised *now* so we need to
4242
# avoid the delay introduced by the lazy regexp. But, we still do
4243
# want the nicer errors raised by lazy_regex.
4244
name._compile_and_collapse()
4247
conf = self._get_stack(directory, scope)
4248
for store, section in conf.iter_sections():
4249
for oname in section.iter_option_names():
4250
if name.search(oname):
4251
if cur_store_id != store.id:
4252
# Explain where the options are defined
4253
self.outf.write('%s:\n' % (store.id,))
4254
cur_store_id = store.id
4256
if (section.id is not None and cur_section != section.id):
4257
# Display the section id as it appears in the store
4258
# (None doesn't appear by definition)
4259
self.outf.write(' [%s]\n' % (section.id,))
4260
cur_section = section.id
4261
value = section.get(oname, expand=False)
4262
# Quote the value appropriately
4263
value = self._quote_multiline(value)
4264
self.outf.write(' %s = %s\n' % (oname, value))
4266
def _set_config_option(self, name, value, directory, scope):
4267
conf = self._get_stack(directory, scope, write_access=True)
4268
conf.set(name, value)
4269
# Explicitly save the changes
4270
conf.store.save_changes()
4272
def _remove_config_option(self, name, directory, scope):
4274
raise errors.BzrCommandError(
4275
'--remove expects an option to remove.')
4276
conf = self._get_stack(directory, scope, write_access=True)
4279
# Explicitly save the changes
4280
conf.store.save_changes()
4282
raise NoSuchConfigOption(name)
4287
# We need adapters that can build a Store or a Stack in a test context. Test
4288
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4289
# themselves. The builder will receive a test instance and should return a
4290
# ready-to-use store or stack. Plugins that define new store/stacks can also
4291
# register themselves here to be tested against the tests defined in
4292
# breezy.tests.test_config. Note that the builder can be called multiple times
4293
# for the same test.
4295
# The registered object should be a callable receiving a test instance
4296
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4298
test_store_builder_registry = registry.Registry()
4300
# The registered object should be a callable receiving a test instance
4301
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4303
test_stack_builder_registry = registry.Registry()