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]
2428
value = value.decode(osutils.get_user_encoding())
2434
def get_default(self):
2436
for var in self.default_from_env:
2438
# If the env variable is defined, its value is the default one
2439
value = os.environ[var]
2441
value = value.decode(osutils.get_user_encoding())
2446
# Otherwise, fallback to the value defined at registration
2447
if callable(self.default):
2448
value = self.default()
2449
if not isinstance(value, text_type):
2450
raise AssertionError(
2451
"Callable default value for '%s' should be unicode"
2454
value = self.default
2457
def get_help_topic(self):
2460
def get_help_text(self, additional_see_also=None, plain=True):
2462
from breezy import help_topics
2463
result += help_topics._format_see_also(additional_see_also)
2465
result = help_topics.help_as_plain_text(result)
2469
# Predefined converters to get proper values from store
2471
def bool_from_store(unicode_str):
2472
return ui.bool_from_string(unicode_str)
2475
def int_from_store(unicode_str):
2476
return int(unicode_str)
2479
_unit_suffixes = dict(K=10**3, M=10**6, G=10**9)
2481
def int_SI_from_store(unicode_str):
2482
"""Convert a human readable size in SI units, e.g 10MB into an integer.
2484
Accepted suffixes are K,M,G. It is case-insensitive and may be followed
2485
by a trailing b (i.e. Kb, MB). This is intended to be practical and not
2488
:return Integer, expanded to its base-10 value if a proper SI unit is
2489
found, None otherwise.
2491
regexp = "^(\\d+)(([" + ''.join(_unit_suffixes) + "])b?)?$"
2492
p = re.compile(regexp, re.IGNORECASE)
2493
m = p.match(unicode_str)
2496
val, _, unit = m.groups()
2500
coeff = _unit_suffixes[unit.upper()]
2502
raise ValueError(gettext('{0} is not an SI unit.').format(unit))
2507
def float_from_store(unicode_str):
2508
return float(unicode_str)
2511
# Use an empty dict to initialize an empty configobj avoiding all parsing and
2513
_list_converter_config = configobj.ConfigObj(
2514
{}, encoding='utf-8', list_values=True, interpolation=False)
2517
class ListOption(Option):
2519
def __init__(self, name, default=None, default_from_env=None,
2520
help=None, invalid=None):
2521
"""A list Option definition.
2523
This overrides the base class so the conversion from a unicode string
2524
can take quoting into account.
2526
super(ListOption, self).__init__(
2527
name, default=default, default_from_env=default_from_env,
2528
from_unicode=self.from_unicode, help=help,
2529
invalid=invalid, unquote=False)
2531
def from_unicode(self, unicode_str):
2532
if not isinstance(unicode_str, string_types):
2534
# Now inject our string directly as unicode. All callers got their
2535
# value from configobj, so values that need to be quoted are already
2537
_list_converter_config.reset()
2538
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2539
maybe_list = _list_converter_config['list']
2540
if isinstance(maybe_list, string_types):
2542
# A single value, most probably the user forgot (or didn't care
2543
# to add) the final ','
2546
# The empty string, convert to empty list
2549
# We rely on ConfigObj providing us with a list already
2554
class RegistryOption(Option):
2555
"""Option for a choice from a registry."""
2557
def __init__(self, name, registry, default_from_env=None,
2558
help=None, invalid=None):
2559
"""A registry based Option definition.
2561
This overrides the base class so the conversion from a unicode string
2562
can take quoting into account.
2564
super(RegistryOption, self).__init__(
2565
name, default=lambda: registry.default_key,
2566
default_from_env=default_from_env,
2567
from_unicode=self.from_unicode, help=help,
2568
invalid=invalid, unquote=False)
2569
self.registry = registry
2571
def from_unicode(self, unicode_str):
2572
if not isinstance(unicode_str, string_types):
2575
return self.registry.get(unicode_str)
2578
"Invalid value %s for %s."
2579
"See help for a list of possible values." % (unicode_str,
2584
ret = [self._help, "\n\nThe following values are supported:\n"]
2585
for key in self.registry.keys():
2586
ret.append(" %s - %s\n" % (key, self.registry.get_help(key)))
2590
_option_ref_re = lazy_regex.lazy_compile('({[^\\d\\W](?:\\.\\w|-\\w|\\w)*})')
2591
"""Describes an expandable option reference.
2593
We want to match the most embedded reference first.
2595
I.e. for '{{foo}}' we will get '{foo}',
2596
for '{bar{baz}}' we will get '{baz}'
2599
def iter_option_refs(string):
2600
# Split isolate refs so every other chunk is a ref
2602
for chunk in _option_ref_re.split(string):
2607
class OptionRegistry(registry.Registry):
2608
"""Register config options by their name.
2610
This overrides ``registry.Registry`` to simplify registration by acquiring
2611
some information from the option object itself.
2614
def _check_option_name(self, option_name):
2615
"""Ensures an option name is valid.
2617
:param option_name: The name to validate.
2619
if _option_ref_re.match('{%s}' % option_name) is None:
2620
raise IllegalOptionName(option_name)
2622
def register(self, option):
2623
"""Register a new option to its name.
2625
:param option: The option to register. Its name is used as the key.
2627
self._check_option_name(option.name)
2628
super(OptionRegistry, self).register(option.name, option,
2631
def register_lazy(self, key, module_name, member_name):
2632
"""Register a new option to be loaded on request.
2634
:param key: the key to request the option later. Since the registration
2635
is lazy, it should be provided and match the option name.
2637
:param module_name: the python path to the module. Such as 'os.path'.
2639
:param member_name: the member of the module to return. If empty or
2640
None, get() will return the module itself.
2642
self._check_option_name(key)
2643
super(OptionRegistry, self).register_lazy(key,
2644
module_name, member_name)
2646
def get_help(self, key=None):
2647
"""Get the help text associated with the given key"""
2648
option = self.get(key)
2649
the_help = option.help
2650
if callable(the_help):
2651
return the_help(self, key)
2655
option_registry = OptionRegistry()
2658
# Registered options in lexicographical order
2660
option_registry.register(
2661
Option('append_revisions_only',
2662
default=None, from_unicode=bool_from_store, invalid='warning',
2664
Whether to only append revisions to the mainline.
2666
If this is set to true, then it is not possible to change the
2667
existing mainline of the branch.
2669
option_registry.register(
2670
ListOption('acceptable_keys',
2673
List of GPG key patterns which are acceptable for verification.
2675
option_registry.register(
2676
Option('add.maximum_file_size',
2677
default=u'20MB', from_unicode=int_SI_from_store,
2679
Size above which files should be added manually.
2681
Files below this size are added automatically when using ``bzr add`` without
2684
A negative value means disable the size check.
2686
option_registry.register(
2688
default=None, from_unicode=bool_from_store,
2690
Is the branch bound to ``bound_location``.
2692
If set to "True", the branch should act as a checkout, and push each commit to
2693
the bound_location. This option is normally set by ``bind``/``unbind``.
2695
See also: bound_location.
2697
option_registry.register(
2698
Option('bound_location',
2701
The location that commits should go to when acting as a checkout.
2703
This option is normally set by ``bind``.
2707
option_registry.register(
2708
Option('branch.fetch_tags', default=False, from_unicode=bool_from_store,
2710
Whether revisions associated with tags should be fetched.
2712
option_registry.register_lazy(
2713
'transform.orphan_policy', 'breezy.transform', 'opt_transform_orphan')
2714
option_registry.register(
2715
Option('bzr.workingtree.worth_saving_limit', default=10,
2716
from_unicode=int_from_store, invalid='warning',
2718
How many changes before saving the dirstate.
2720
-1 means that we will never rewrite the dirstate file for only
2721
stat-cache changes. Regardless of this setting, we will always rewrite
2722
the dirstate file if a file is added/removed/renamed/etc. This flag only
2723
affects the behavior of updating the dirstate file after we notice that
2724
a file has been touched.
2726
option_registry.register(
2727
Option('bugtracker', default=None,
2729
Default bug tracker to use.
2731
This bug tracker will be used for example when marking bugs
2732
as fixed using ``bzr commit --fixes``, if no explicit
2733
bug tracker was specified.
2735
option_registry.register(
2736
Option('check_signatures', default=CHECK_IF_POSSIBLE,
2737
from_unicode=signature_policy_from_unicode,
2739
GPG checking policy.
2741
Possible values: require, ignore, check-available (default)
2743
this option will control whether bzr will require good gpg
2744
signatures, ignore them, or check them if they are
2747
option_registry.register(
2748
Option('child_submit_format',
2749
help='''The preferred format of submissions to this branch.'''))
2750
option_registry.register(
2751
Option('child_submit_to',
2752
help='''Where submissions to this branch are mailed to.'''))
2753
option_registry.register(
2754
Option('create_signatures', default=SIGN_WHEN_REQUIRED,
2755
from_unicode=signing_policy_from_unicode,
2759
Possible values: always, never, when-required (default)
2761
This option controls whether bzr will always create
2762
gpg signatures or not on commits.
2764
option_registry.register(
2765
Option('dirstate.fdatasync', default=True,
2766
from_unicode=bool_from_store,
2768
Flush dirstate changes onto physical disk?
2770
If true (default), working tree metadata changes are flushed through the
2771
OS buffers to physical disk. This is somewhat slower, but means data
2772
should not be lost if the machine crashes. See also repository.fdatasync.
2774
option_registry.register(
2775
ListOption('debug_flags', default=[],
2776
help='Debug flags to activate.'))
2777
option_registry.register(
2778
Option('default_format', default='2a',
2779
help='Format used when creating branches.'))
2780
option_registry.register(
2781
Option('dpush_strict', default=None,
2782
from_unicode=bool_from_store,
2784
The default value for ``dpush --strict``.
2786
If present, defines the ``--strict`` option default value for checking
2787
uncommitted changes before pushing into a different VCS without any
2788
custom bzr metadata.
2790
option_registry.register(
2792
help='The command called to launch an editor to enter a message.'))
2793
option_registry.register(
2794
Option('email', override_from_env=['BRZ_EMAIL'], default=default_email,
2795
help='The users identity'))
2796
option_registry.register(
2797
Option('gpg_signing_key',
2800
GPG key to use for signing.
2802
This defaults to the first key associated with the users email.
2804
option_registry.register(
2806
help='Language to translate messages into.'))
2807
option_registry.register(
2808
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2810
Steal locks that appears to be dead.
2812
If set to True, bzr will check if a lock is supposed to be held by an
2813
active process from the same user on the same machine. If the user and
2814
machine match, but no process with the given PID is active, then bzr
2815
will automatically break the stale lock, and create a new lock for
2817
Otherwise, bzr will prompt as normal to break the lock.
2819
option_registry.register(
2820
Option('log_format', default='long',
2822
Log format to use when displaying revisions.
2824
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2825
may be provided by plugins.
2827
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2829
option_registry.register(
2830
Option('output_encoding',
2831
help= 'Unicode encoding for output'
2832
' (terminal encoding if not specified).'))
2833
option_registry.register(
2834
Option('parent_location',
2837
The location of the default branch for pull or merge.
2839
This option is normally set when creating a branch, the first ``pull`` or by
2840
``pull --remember``.
2842
option_registry.register(
2843
Option('post_commit', default=None,
2845
Post commit functions.
2847
An ordered list of python functions to call, separated by spaces.
2849
Each function takes branch, rev_id as parameters.
2851
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2853
option_registry.register(
2854
Option('public_branch',
2857
A publically-accessible version of this branch.
2859
This implies that the branch setting this option is not publically-accessible.
2860
Used and set by ``bzr send``.
2862
option_registry.register(
2863
Option('push_location',
2866
The location of the default branch for push.
2868
This option is normally set by the first ``push`` or ``push --remember``.
2870
option_registry.register(
2871
Option('push_strict', default=None,
2872
from_unicode=bool_from_store,
2874
The default value for ``push --strict``.
2876
If present, defines the ``--strict`` option default value for checking
2877
uncommitted changes before sending a merge directive.
2879
option_registry.register(
2880
Option('repository.fdatasync', default=True,
2881
from_unicode=bool_from_store,
2883
Flush repository changes onto physical disk?
2885
If true (default), repository changes are flushed through the OS buffers
2886
to physical disk. This is somewhat slower, but means data should not be
2887
lost if the machine crashes. See also dirstate.fdatasync.
2889
option_registry.register_lazy('smtp_server',
2890
'breezy.smtp_connection', 'smtp_server')
2891
option_registry.register_lazy('smtp_password',
2892
'breezy.smtp_connection', 'smtp_password')
2893
option_registry.register_lazy('smtp_username',
2894
'breezy.smtp_connection', 'smtp_username')
2895
option_registry.register(
2896
Option('selftest.timeout',
2898
from_unicode=int_from_store,
2899
help='Abort selftest if one test takes longer than this many seconds',
2902
option_registry.register(
2903
Option('send_strict', default=None,
2904
from_unicode=bool_from_store,
2906
The default value for ``send --strict``.
2908
If present, defines the ``--strict`` option default value for checking
2909
uncommitted changes before sending a bundle.
2912
option_registry.register(
2913
Option('serve.client_timeout',
2914
default=300.0, from_unicode=float_from_store,
2915
help="If we wait for a new request from a client for more than"
2916
" X seconds, consider the client idle, and hangup."))
2917
option_registry.register(
2918
Option('stacked_on_location',
2920
help="""The location where this branch is stacked on."""))
2921
option_registry.register(
2922
Option('submit_branch',
2925
The branch you intend to submit your current work to.
2927
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2928
by the ``submit:`` revision spec.
2930
option_registry.register(
2932
help='''Where submissions from this branch are mailed to.'''))
2933
option_registry.register(
2934
ListOption('suppress_warnings',
2936
help="List of warning classes to suppress."))
2937
option_registry.register(
2938
Option('validate_signatures_in_log', default=False,
2939
from_unicode=bool_from_store, invalid='warning',
2940
help='''Whether to validate signatures in brz log.'''))
2941
option_registry.register_lazy('ssl.ca_certs',
2942
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_ca_certs')
2944
option_registry.register_lazy('ssl.cert_reqs',
2945
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_cert_reqs')
2948
class Section(object):
2949
"""A section defines a dict of option name => value.
2951
This is merely a read-only dict which can add some knowledge about the
2952
options. It is *not* a python dict object though and doesn't try to mimic
2956
def __init__(self, section_id, options):
2957
self.id = section_id
2958
# We re-use the dict-like object received
2959
self.options = options
2961
def get(self, name, default=None, expand=True):
2962
return self.options.get(name, default)
2964
def iter_option_names(self):
2965
for k in self.options.keys():
2969
# Mostly for debugging use
2970
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2973
_NewlyCreatedOption = object()
2974
"""Was the option created during the MutableSection lifetime"""
2975
_DeletedOption = object()
2976
"""Was the option deleted during the MutableSection lifetime"""
2979
class MutableSection(Section):
2980
"""A section allowing changes and keeping track of the original values."""
2982
def __init__(self, section_id, options):
2983
super(MutableSection, self).__init__(section_id, options)
2984
self.reset_changes()
2986
def set(self, name, value):
2987
if name not in self.options:
2988
# This is a new option
2989
self.orig[name] = _NewlyCreatedOption
2990
elif name not in self.orig:
2991
self.orig[name] = self.get(name, None)
2992
self.options[name] = value
2994
def remove(self, name):
2995
if name not in self.orig and name in self.options:
2996
self.orig[name] = self.get(name, None)
2997
del self.options[name]
2999
def reset_changes(self):
3002
def apply_changes(self, dirty, store):
3003
"""Apply option value changes.
3005
``self`` has been reloaded from the persistent storage. ``dirty``
3006
contains the changes made since the previous loading.
3008
:param dirty: the mutable section containing the changes.
3010
:param store: the store containing the section
3012
for k, expected in dirty.orig.items():
3013
actual = dirty.get(k, _DeletedOption)
3014
reloaded = self.get(k, _NewlyCreatedOption)
3015
if actual is _DeletedOption:
3016
if k in self.options:
3020
# Report concurrent updates in an ad-hoc way. This should only
3021
# occurs when different processes try to update the same option
3022
# which is not supported (as in: the config framework is not meant
3023
# to be used as a sharing mechanism).
3024
if expected != reloaded:
3025
if actual is _DeletedOption:
3026
actual = '<DELETED>'
3027
if reloaded is _NewlyCreatedOption:
3028
reloaded = '<CREATED>'
3029
if expected is _NewlyCreatedOption:
3030
expected = '<CREATED>'
3031
# Someone changed the value since we get it from the persistent
3033
trace.warning(gettext(
3034
"Option {0} in section {1} of {2} was changed"
3035
" from {3} to {4}. The {5} value will be saved.".format(
3036
k, self.id, store.external_url(), expected,
3038
# No need to keep track of these changes
3039
self.reset_changes()
3042
class Store(object):
3043
"""Abstract interface to persistent storage for configuration options."""
3045
readonly_section_class = Section
3046
mutable_section_class = MutableSection
3049
# Which sections need to be saved (by section id). We use a dict here
3050
# so the dirty sections can be shared by multiple callers.
3051
self.dirty_sections = {}
3053
def is_loaded(self):
3054
"""Returns True if the Store has been loaded.
3056
This is used to implement lazy loading and ensure the persistent
3057
storage is queried only when needed.
3059
raise NotImplementedError(self.is_loaded)
3062
"""Loads the Store from persistent storage."""
3063
raise NotImplementedError(self.load)
3065
def _load_from_string(self, bytes):
3066
"""Create a store from a string in configobj syntax.
3068
:param bytes: A string representing the file content.
3070
raise NotImplementedError(self._load_from_string)
3073
"""Unloads the Store.
3075
This should make is_loaded() return False. This is used when the caller
3076
knows that the persistent storage has changed or may have change since
3079
raise NotImplementedError(self.unload)
3081
def quote(self, value):
3082
"""Quote a configuration option value for storing purposes.
3084
This allows Stacks to present values as they will be stored.
3088
def unquote(self, value):
3089
"""Unquote a configuration option value into unicode.
3091
The received value is quoted as stored.
3096
"""Saves the Store to persistent storage."""
3097
raise NotImplementedError(self.save)
3099
def _need_saving(self):
3100
for s in self.dirty_sections.values():
3102
# At least one dirty section contains a modification
3106
def apply_changes(self, dirty_sections):
3107
"""Apply changes from dirty sections while checking for coherency.
3109
The Store content is discarded and reloaded from persistent storage to
3110
acquire up-to-date values.
3112
Dirty sections are MutableSection which kept track of the value they
3113
are expected to update.
3115
# We need an up-to-date version from the persistent storage, unload the
3116
# store. The reload will occur when needed (triggered by the first
3117
# get_mutable_section() call below.
3119
# Apply the changes from the preserved dirty sections
3120
for section_id, dirty in dirty_sections.items():
3121
clean = self.get_mutable_section(section_id)
3122
clean.apply_changes(dirty, self)
3123
# Everything is clean now
3124
self.dirty_sections = {}
3126
def save_changes(self):
3127
"""Saves the Store to persistent storage if changes occurred.
3129
Apply the changes recorded in the mutable sections to a store content
3130
refreshed from persistent storage.
3132
raise NotImplementedError(self.save_changes)
3134
def external_url(self):
3135
raise NotImplementedError(self.external_url)
3137
def get_sections(self):
3138
"""Returns an ordered iterable of existing sections.
3140
:returns: An iterable of (store, section).
3142
raise NotImplementedError(self.get_sections)
3144
def get_mutable_section(self, section_id=None):
3145
"""Returns the specified mutable section.
3147
:param section_id: The section identifier
3149
raise NotImplementedError(self.get_mutable_section)
3152
# Mostly for debugging use
3153
return "<config.%s(%s)>" % (self.__class__.__name__,
3154
self.external_url())
3157
class CommandLineStore(Store):
3158
"A store to carry command line overrides for the config options."""
3160
def __init__(self, opts=None):
3161
super(CommandLineStore, self).__init__()
3168
# The dict should be cleared but not replaced so it can be shared.
3169
self.options.clear()
3171
def _from_cmdline(self, overrides):
3172
# Reset before accepting new definitions
3174
for over in overrides:
3176
name, value = over.split('=', 1)
3178
raise errors.BzrCommandError(
3179
gettext("Invalid '%s', should be of the form 'name=value'")
3181
self.options[name] = value
3183
def external_url(self):
3184
# Not an url but it makes debugging easier and is never needed
3188
def get_sections(self):
3189
yield self, self.readonly_section_class(None, self.options)
3192
class IniFileStore(Store):
3193
"""A config Store using ConfigObj for storage.
3195
:ivar _config_obj: Private member to hold the ConfigObj instance used to
3196
serialize/deserialize the config file.
3200
"""A config Store using ConfigObj for storage.
3202
super(IniFileStore, self).__init__()
3203
self._config_obj = None
3205
def is_loaded(self):
3206
return self._config_obj != None
3209
self._config_obj = None
3210
self.dirty_sections = {}
3212
def _load_content(self):
3213
"""Load the config file bytes.
3215
This should be provided by subclasses
3217
:return: Byte string
3219
raise NotImplementedError(self._load_content)
3221
def _save_content(self, content):
3222
"""Save the config file bytes.
3224
This should be provided by subclasses
3226
:param content: Config file bytes to write
3228
raise NotImplementedError(self._save_content)
3231
"""Load the store from the associated file."""
3232
if self.is_loaded():
3234
content = self._load_content()
3235
self._load_from_string(content)
3236
for hook in ConfigHooks['load']:
3239
def _load_from_string(self, bytes):
3240
"""Create a config store from a string.
3242
:param bytes: A string representing the file content.
3244
if self.is_loaded():
3245
raise AssertionError('Already loaded: %r' % (self._config_obj,))
3246
co_input = BytesIO(bytes)
3248
# The config files are always stored utf8-encoded
3249
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3251
except configobj.ConfigObjError as e:
3252
self._config_obj = None
3253
raise ParseConfigError(e.errors, self.external_url())
3254
except UnicodeDecodeError:
3255
raise ConfigContentError(self.external_url())
3257
def save_changes(self):
3258
if not self.is_loaded():
3261
if not self._need_saving():
3263
# Preserve the current version
3264
dirty_sections = self.dirty_sections.copy()
3265
self.apply_changes(dirty_sections)
3266
# Save to the persistent storage
3270
if not self.is_loaded():
3274
self._config_obj.write(out)
3275
self._save_content(out.getvalue())
3276
for hook in ConfigHooks['save']:
3279
def get_sections(self):
3280
"""Get the configobj section in the file order.
3282
:returns: An iterable of (store, section).
3284
# We need a loaded store
3287
except (errors.NoSuchFile, errors.PermissionDenied):
3288
# If the file can't be read, there is no sections
3290
cobj = self._config_obj
3292
yield self, self.readonly_section_class(None, cobj)
3293
for section_name in cobj.sections:
3295
self.readonly_section_class(section_name,
3296
cobj[section_name]))
3298
def get_mutable_section(self, section_id=None):
3299
# We need a loaded store
3302
except errors.NoSuchFile:
3303
# The file doesn't exist, let's pretend it was empty
3304
self._load_from_string(b'')
3305
if section_id in self.dirty_sections:
3306
# We already created a mutable section for this id
3307
return self.dirty_sections[section_id]
3308
if section_id is None:
3309
section = self._config_obj
3311
section = self._config_obj.setdefault(section_id, {})
3312
mutable_section = self.mutable_section_class(section_id, section)
3313
# All mutable sections can become dirty
3314
self.dirty_sections[section_id] = mutable_section
3315
return mutable_section
3317
def quote(self, value):
3319
# configobj conflates automagical list values and quoting
3320
self._config_obj.list_values = True
3321
return self._config_obj._quote(value)
3323
self._config_obj.list_values = False
3325
def unquote(self, value):
3326
if value and isinstance(value, string_types):
3327
# _unquote doesn't handle None nor empty strings nor anything that
3328
# is not a string, really.
3329
value = self._config_obj._unquote(value)
3332
def external_url(self):
3333
# Since an IniFileStore can be used without a file (at least in tests),
3334
# it's better to provide something than raising a NotImplementedError.
3335
# All daughter classes are supposed to provide an implementation
3337
return 'In-Process Store, no URL'
3340
class TransportIniFileStore(IniFileStore):
3341
"""IniFileStore that loads files from a transport.
3343
:ivar transport: The transport object where the config file is located.
3345
:ivar file_name: The config file basename in the transport directory.
3348
def __init__(self, transport, file_name):
3349
"""A Store using a ini file on a Transport
3351
:param transport: The transport object where the config file is located.
3352
:param file_name: The config file basename in the transport directory.
3354
super(TransportIniFileStore, self).__init__()
3355
self.transport = transport
3356
self.file_name = file_name
3358
def _load_content(self):
3360
return self.transport.get_bytes(self.file_name)
3361
except errors.PermissionDenied:
3362
trace.warning("Permission denied while trying to load "
3363
"configuration store %s.", self.external_url())
3366
def _save_content(self, content):
3367
self.transport.put_bytes(self.file_name, content)
3369
def external_url(self):
3370
# FIXME: external_url should really accepts an optional relpath
3371
# parameter (bug #750169) :-/ -- vila 2011-04-04
3372
# The following will do in the interim but maybe we don't want to
3373
# expose a path here but rather a config ID and its associated
3374
# object </hand wawe>.
3375
return urlutils.join(
3376
self.transport.external_url(), urlutils.escape(self.file_name))
3379
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3380
# unlockable stores for use with objects that can already ensure the locking
3381
# (think branches). If different stores (not based on ConfigObj) are created,
3382
# they may face the same issue.
3385
class LockableIniFileStore(TransportIniFileStore):
3386
"""A ConfigObjStore using locks on save to ensure store integrity."""
3388
def __init__(self, transport, file_name, lock_dir_name=None):
3389
"""A config Store using ConfigObj for storage.
3391
:param transport: The transport object where the config file is located.
3393
:param file_name: The config file basename in the transport directory.
3395
if lock_dir_name is None:
3396
lock_dir_name = 'lock'
3397
self.lock_dir_name = lock_dir_name
3398
super(LockableIniFileStore, self).__init__(transport, file_name)
3399
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3401
def lock_write(self, token=None):
3402
"""Takes a write lock in the directory containing the config file.
3404
If the directory doesn't exist it is created.
3406
# FIXME: This doesn't check the ownership of the created directories as
3407
# ensure_config_dir_exists does. It should if the transport is local
3408
# -- vila 2011-04-06
3409
self.transport.create_prefix()
3410
token = self._lock.lock_write(token)
3411
return lock.LogicalLockResult(self.unlock, token)
3416
def break_lock(self):
3417
self._lock.break_lock()
3420
with self.lock_write():
3421
# We need to be able to override the undecorated implementation
3422
self.save_without_locking()
3424
def save_without_locking(self):
3425
super(LockableIniFileStore, self).save()
3428
# FIXME: global, breezy, shouldn't that be 'user' instead or even
3429
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
3430
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
3432
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
3433
# functions or a registry will make it easier and clearer for tests, focusing
3434
# on the relevant parts of the API that needs testing -- vila 20110503 (based
3435
# on a poolie's remark)
3436
class GlobalStore(LockableIniFileStore):
3437
"""A config store for global options.
3439
There is a single GlobalStore for a given process.
3442
def __init__(self, possible_transports=None):
3443
(path, kind) = _config_dir()
3444
t = transport.get_transport_from_path(
3445
path, possible_transports=possible_transports)
3446
filename = {'bazaar': 'bazaar.conf', 'breezy': 'breezy.conf'}[kind]
3447
super(GlobalStore, self).__init__(t, filename)
3451
class LocationStore(LockableIniFileStore):
3452
"""A config store for options specific to a location.
3454
There is a single LocationStore for a given process.
3457
def __init__(self, possible_transports=None):
3458
t = transport.get_transport_from_path(
3459
config_dir(), possible_transports=possible_transports)
3460
super(LocationStore, self).__init__(t, 'locations.conf')
3461
self.id = 'locations'
3464
class BranchStore(TransportIniFileStore):
3465
"""A config store for branch options.
3467
There is a single BranchStore for a given branch.
3470
def __init__(self, branch):
3471
super(BranchStore, self).__init__(branch.control_transport,
3473
self.branch = branch
3477
class ControlStore(LockableIniFileStore):
3479
def __init__(self, bzrdir):
3480
super(ControlStore, self).__init__(bzrdir.transport,
3482
lock_dir_name='branch_lock')
3486
class SectionMatcher(object):
3487
"""Select sections into a given Store.
3489
This is intended to be used to postpone getting an iterable of sections
3493
def __init__(self, store):
3496
def get_sections(self):
3497
# This is where we require loading the store so we can see all defined
3499
sections = self.store.get_sections()
3500
# Walk the revisions in the order provided
3501
for store, s in sections:
3505
def match(self, section):
3506
"""Does the proposed section match.
3508
:param section: A Section object.
3510
:returns: True if the section matches, False otherwise.
3512
raise NotImplementedError(self.match)
3515
class NameMatcher(SectionMatcher):
3517
def __init__(self, store, section_id):
3518
super(NameMatcher, self).__init__(store)
3519
self.section_id = section_id
3521
def match(self, section):
3522
return section.id == self.section_id
3525
class LocationSection(Section):
3527
def __init__(self, section, extra_path, branch_name=None):
3528
super(LocationSection, self).__init__(section.id, section.options)
3529
self.extra_path = extra_path
3530
if branch_name is None:
3532
self.locals = {'relpath': extra_path,
3533
'basename': urlutils.basename(extra_path),
3534
'branchname': branch_name}
3536
def get(self, name, default=None, expand=True):
3537
value = super(LocationSection, self).get(name, default)
3538
if value is not None and expand:
3539
policy_name = self.get(name + ':policy', None)
3540
policy = _policy_value.get(policy_name, POLICY_NONE)
3541
if policy == POLICY_APPENDPATH:
3542
value = urlutils.join(value, self.extra_path)
3543
# expand section local options right now (since POLICY_APPENDPATH
3544
# will never add options references, it's ok to expand after it).
3546
for is_ref, chunk in iter_option_refs(value):
3548
chunks.append(chunk)
3551
if ref in self.locals:
3552
chunks.append(self.locals[ref])
3554
chunks.append(chunk)
3555
value = ''.join(chunks)
3559
class StartingPathMatcher(SectionMatcher):
3560
"""Select sections for a given location respecting the Store order."""
3562
# FIXME: Both local paths and urls can be used for section names as well as
3563
# ``location`` to stay consistent with ``LocationMatcher`` which itself
3564
# inherited the fuzziness from the previous ``LocationConfig``
3565
# implementation. We probably need to revisit which encoding is allowed for
3566
# both ``location`` and section names and how we normalize
3567
# them. http://pad.lv/85479, http://pad.lv/437009 and http://359320 are
3568
# related too. -- vila 2012-01-04
3570
def __init__(self, store, location):
3571
super(StartingPathMatcher, self).__init__(store)
3572
if location.startswith('file://'):
3573
location = urlutils.local_path_from_url(location)
3574
self.location = location
3576
def get_sections(self):
3577
"""Get all sections matching ``location`` in the store.
3579
The most generic sections are described first in the store, then more
3580
specific ones can be provided for reduced scopes.
3582
The returned section are therefore returned in the reversed order so
3583
the most specific ones can be found first.
3585
location_parts = self.location.rstrip('/').split('/')
3587
# Later sections are more specific, they should be returned first
3588
for _, section in reversed(list(store.get_sections())):
3589
if section.id is None:
3590
# The no-name section is always included if present
3591
yield store, LocationSection(section, self.location)
3593
section_path = section.id
3594
if section_path.startswith('file://'):
3595
# the location is already a local path or URL, convert the
3596
# section id to the same format
3597
section_path = urlutils.local_path_from_url(section_path)
3598
if (self.location.startswith(section_path)
3599
or fnmatch.fnmatch(self.location, section_path)):
3600
section_parts = section_path.rstrip('/').split('/')
3601
extra_path = '/'.join(location_parts[len(section_parts):])
3602
yield store, LocationSection(section, extra_path)
3605
class LocationMatcher(SectionMatcher):
3607
def __init__(self, store, location):
3608
super(LocationMatcher, self).__init__(store)
3609
url, params = urlutils.split_segment_parameters(location)
3610
if location.startswith('file://'):
3611
location = urlutils.local_path_from_url(location)
3612
self.location = location
3613
branch_name = params.get('branch')
3614
if branch_name is None:
3615
self.branch_name = urlutils.basename(self.location)
3617
self.branch_name = urlutils.unescape(branch_name)
3619
def _get_matching_sections(self):
3620
"""Get all sections matching ``location``."""
3621
# We slightly diverge from LocalConfig here by allowing the no-name
3622
# section as the most generic one and the lower priority.
3623
no_name_section = None
3625
# Filter out the no_name_section so _iter_for_location_by_parts can be
3626
# used (it assumes all sections have a name).
3627
for _, section in self.store.get_sections():
3628
if section.id is None:
3629
no_name_section = section
3631
all_sections.append(section)
3632
# Unfortunately _iter_for_location_by_parts deals with section names so
3633
# we have to resync.
3634
filtered_sections = _iter_for_location_by_parts(
3635
[s.id for s in all_sections], self.location)
3636
iter_all_sections = iter(all_sections)
3637
matching_sections = []
3638
if no_name_section is not None:
3639
matching_sections.append(
3640
(0, LocationSection(no_name_section, self.location)))
3641
for section_id, extra_path, length in filtered_sections:
3642
# a section id is unique for a given store so it's safe to take the
3643
# first matching section while iterating. Also, all filtered
3644
# sections are part of 'all_sections' and will always be found
3647
section = next(iter_all_sections)
3648
if section_id == section.id:
3649
section = LocationSection(section, extra_path,
3651
matching_sections.append((length, section))
3653
return matching_sections
3655
def get_sections(self):
3656
# Override the default implementation as we want to change the order
3657
# We want the longest (aka more specific) locations first
3658
sections = sorted(self._get_matching_sections(),
3659
key=lambda match: (match[0], match[1].id),
3661
# Sections mentioning 'ignore_parents' restrict the selection
3662
for _, section in sections:
3663
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3664
ignore = section.get('ignore_parents', None)
3665
if ignore is not None:
3666
ignore = ui.bool_from_string(ignore)
3669
# Finally, we have a valid section
3670
yield self.store, section
3673
# FIXME: _shared_stores should be an attribute of a library state once a
3674
# library_state object is always available.
3676
_shared_stores_at_exit_installed = False
3678
class Stack(object):
3679
"""A stack of configurations where an option can be defined"""
3681
def __init__(self, sections_def, store=None, mutable_section_id=None):
3682
"""Creates a stack of sections with an optional store for changes.
3684
:param sections_def: A list of Section or callables that returns an
3685
iterable of Section. This defines the Sections for the Stack and
3686
can be called repeatedly if needed.
3688
:param store: The optional Store where modifications will be
3689
recorded. If none is specified, no modifications can be done.
3691
:param mutable_section_id: The id of the MutableSection where changes
3692
are recorded. This requires the ``store`` parameter to be
3695
self.sections_def = sections_def
3697
self.mutable_section_id = mutable_section_id
3699
def iter_sections(self):
3700
"""Iterate all the defined sections."""
3701
# Ensuring lazy loading is achieved by delaying section matching (which
3702
# implies querying the persistent storage) until it can't be avoided
3703
# anymore by using callables to describe (possibly empty) section
3705
for sections in self.sections_def:
3706
for store, section in sections():
3707
yield store, section
3709
def get(self, name, expand=True, convert=True):
3710
"""Return the *first* option value found in the sections.
3712
This is where we guarantee that sections coming from Store are loaded
3713
lazily: the loading is delayed until we need to either check that an
3714
option exists or get its value, which in turn may require to discover
3715
in which sections it can be defined. Both of these (section and option
3716
existence) require loading the store (even partially).
3718
:param name: The queried option.
3720
:param expand: Whether options references should be expanded.
3722
:param convert: Whether the option value should be converted from
3723
unicode (do nothing for non-registered options).
3725
:returns: The value of the option.
3727
# FIXME: No caching of options nor sections yet -- vila 20110503
3729
found_store = None # Where the option value has been found
3730
# If the option is registered, it may provide additional info about
3733
opt = option_registry.get(name)
3738
def expand_and_convert(val):
3739
# This may need to be called in different contexts if the value is
3740
# None or ends up being None during expansion or conversion.
3743
if isinstance(val, string_types):
3744
val = self._expand_options_in_string(val)
3746
trace.warning('Cannot expand "%s":'
3747
' %s does not support option expansion'
3748
% (name, type(val)))
3750
val = found_store.unquote(val)
3752
val = opt.convert_from_unicode(found_store, val)
3755
# First of all, check if the environment can override the configuration
3757
if opt is not None and opt.override_from_env:
3758
value = opt.get_override()
3759
value = expand_and_convert(value)
3761
for store, section in self.iter_sections():
3762
value = section.get(name)
3763
if value is not None:
3766
value = expand_and_convert(value)
3767
if opt is not None and value is None:
3768
# If the option is registered, it may provide a default value
3769
value = opt.get_default()
3770
value = expand_and_convert(value)
3771
for hook in ConfigHooks['get']:
3772
hook(self, name, value)
3775
def expand_options(self, string, env=None):
3776
"""Expand option references in the string in the configuration context.
3778
:param string: The string containing option(s) to expand.
3780
:param env: An option dict defining additional configuration options or
3781
overriding existing ones.
3783
:returns: The expanded string.
3785
return self._expand_options_in_string(string, env)
3787
def _expand_options_in_string(self, string, env=None, _refs=None):
3788
"""Expand options in the string in the configuration context.
3790
:param string: The string to be expanded.
3792
:param env: An option dict defining additional configuration options or
3793
overriding existing ones.
3795
:param _refs: Private list (FIFO) containing the options being expanded
3798
:returns: The expanded string.
3801
# Not much to expand there
3804
# What references are currently resolved (to detect loops)
3807
# We need to iterate until no more refs appear ({{foo}} will need two
3808
# iterations for example).
3813
for is_ref, chunk in iter_option_refs(result):
3815
chunks.append(chunk)
3820
raise OptionExpansionLoop(string, _refs)
3822
value = self._expand_option(name, env, _refs)
3824
raise ExpandingUnknownOption(name, string)
3825
chunks.append(value)
3827
result = ''.join(chunks)
3830
def _expand_option(self, name, env, _refs):
3831
if env is not None and name in env:
3832
# Special case, values provided in env takes precedence over
3836
value = self.get(name, expand=False, convert=False)
3837
value = self._expand_options_in_string(value, env, _refs)
3840
def _get_mutable_section(self):
3841
"""Get the MutableSection for the Stack.
3843
This is where we guarantee that the mutable section is lazily loaded:
3844
this means we won't load the corresponding store before setting a value
3845
or deleting an option. In practice the store will often be loaded but
3846
this helps catching some programming errors.
3849
section = store.get_mutable_section(self.mutable_section_id)
3850
return store, section
3852
def set(self, name, value):
3853
"""Set a new value for the option."""
3854
store, section = self._get_mutable_section()
3855
section.set(name, store.quote(value))
3856
for hook in ConfigHooks['set']:
3857
hook(self, name, value)
3859
def remove(self, name):
3860
"""Remove an existing option."""
3861
_, section = self._get_mutable_section()
3862
section.remove(name)
3863
for hook in ConfigHooks['remove']:
3867
# Mostly for debugging use
3868
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3870
def _get_overrides(self):
3871
if breezy._global_state is not None:
3872
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
3873
return breezy._global_state.cmdline_overrides.get_sections()
3876
def get_shared_store(self, store, state=None):
3877
"""Get a known shared store.
3879
Store urls uniquely identify them and are used to ensure a single copy
3880
is shared across all users.
3882
:param store: The store known to the caller.
3884
:param state: The library state where the known stores are kept.
3886
:returns: The store received if it's not a known one, an already known
3890
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
3891
state = breezy._global_state
3893
global _shared_stores_at_exit_installed
3894
stores = _shared_stores
3895
def save_config_changes():
3896
for k, store in stores.items():
3897
store.save_changes()
3898
if not _shared_stores_at_exit_installed:
3899
# FIXME: Ugly hack waiting for library_state to always be
3900
# available. -- vila 20120731
3902
atexit.register(save_config_changes)
3903
_shared_stores_at_exit_installed = True
3905
stores = state.config_stores
3906
url = store.external_url()
3914
class MemoryStack(Stack):
3915
"""A configuration stack defined from a string.
3917
This is mainly intended for tests and requires no disk resources.
3920
def __init__(self, content=None):
3921
"""Create an in-memory stack from a given content.
3923
It uses a single store based on configobj and support reading and
3926
:param content: The initial content of the store. If None, the store is
3927
not loaded and ``_load_from_string`` can and should be used if
3930
store = IniFileStore()
3931
if content is not None:
3932
store._load_from_string(content)
3933
super(MemoryStack, self).__init__(
3934
[store.get_sections], store)
3937
class _CompatibleStack(Stack):
3938
"""Place holder for compatibility with previous design.
3940
This is intended to ease the transition from the Config-based design to the
3941
Stack-based design and should not be used nor relied upon by plugins.
3943
One assumption made here is that the daughter classes will all use Stores
3944
derived from LockableIniFileStore).
3946
It implements set() and remove () by re-loading the store before applying
3947
the modification and saving it.
3949
The long term plan being to implement a single write by store to save
3950
all modifications, this class should not be used in the interim.
3953
def set(self, name, value):
3956
super(_CompatibleStack, self).set(name, value)
3957
# Force a write to persistent storage
3960
def remove(self, name):
3963
super(_CompatibleStack, self).remove(name)
3964
# Force a write to persistent storage
3968
class GlobalStack(Stack):
3969
"""Global options only stack.
3971
The following sections are queried:
3973
* command-line overrides,
3975
* the 'DEFAULT' section in bazaar.conf
3977
This stack will use the ``DEFAULT`` section in bazaar.conf as its
3982
gstore = self.get_shared_store(GlobalStore())
3983
super(GlobalStack, self).__init__(
3984
[self._get_overrides,
3985
NameMatcher(gstore, 'DEFAULT').get_sections],
3986
gstore, mutable_section_id='DEFAULT')
3989
class LocationStack(Stack):
3990
"""Per-location options falling back to global options stack.
3993
The following sections are queried:
3995
* command-line overrides,
3997
* the sections matching ``location`` in ``locations.conf``, the order being
3998
defined by the number of path components in the section glob, higher
3999
numbers first (from most specific section to most generic).
4001
* the 'DEFAULT' section in bazaar.conf
4003
This stack will use the ``location`` section in locations.conf as its
4007
def __init__(self, location):
4008
"""Make a new stack for a location and global configuration.
4010
:param location: A URL prefix to """
4011
lstore = self.get_shared_store(LocationStore())
4012
if location.startswith('file://'):
4013
location = urlutils.local_path_from_url(location)
4014
gstore = self.get_shared_store(GlobalStore())
4015
super(LocationStack, self).__init__(
4016
[self._get_overrides,
4017
LocationMatcher(lstore, location).get_sections,
4018
NameMatcher(gstore, 'DEFAULT').get_sections],
4019
lstore, mutable_section_id=location)
4022
class BranchStack(Stack):
4023
"""Per-location options falling back to branch then global options stack.
4025
The following sections are queried:
4027
* command-line overrides,
4029
* the sections matching ``location`` in ``locations.conf``, the order being
4030
defined by the number of path components in the section glob, higher
4031
numbers first (from most specific section to most generic),
4033
* the no-name section in branch.conf,
4035
* the ``DEFAULT`` section in ``bazaar.conf``.
4037
This stack will use the no-name section in ``branch.conf`` as its
4041
def __init__(self, branch):
4042
lstore = self.get_shared_store(LocationStore())
4043
bstore = branch._get_config_store()
4044
gstore = self.get_shared_store(GlobalStore())
4045
super(BranchStack, self).__init__(
4046
[self._get_overrides,
4047
LocationMatcher(lstore, branch.base).get_sections,
4048
NameMatcher(bstore, None).get_sections,
4049
NameMatcher(gstore, 'DEFAULT').get_sections],
4051
self.branch = branch
4053
def lock_write(self, token=None):
4054
return self.branch.lock_write(token)
4057
return self.branch.unlock()
4059
def set(self, name, value):
4060
with self.lock_write():
4061
super(BranchStack, self).set(name, value)
4062
# Unlocking the branch will trigger a store.save_changes() so the
4063
# last unlock saves all the changes.
4065
def remove(self, name):
4066
with self.lock_write():
4067
super(BranchStack, self).remove(name)
4068
# Unlocking the branch will trigger a store.save_changes() so the
4069
# last unlock saves all the changes.
4072
class RemoteControlStack(Stack):
4073
"""Remote control-only options stack."""
4075
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
4076
# with the stack used for remote bzr dirs. RemoteControlStack only uses
4077
# control.conf and is used only for stack options.
4079
def __init__(self, bzrdir):
4080
cstore = bzrdir._get_config_store()
4081
super(RemoteControlStack, self).__init__(
4082
[NameMatcher(cstore, None).get_sections],
4084
self.controldir = bzrdir
4087
class BranchOnlyStack(Stack):
4088
"""Branch-only options stack."""
4090
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
4091
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
4092
# -- vila 2011-12-16
4094
def __init__(self, branch):
4095
bstore = branch._get_config_store()
4096
super(BranchOnlyStack, self).__init__(
4097
[NameMatcher(bstore, None).get_sections],
4099
self.branch = branch
4101
def lock_write(self, token=None):
4102
return self.branch.lock_write(token)
4105
return self.branch.unlock()
4107
def set(self, name, value):
4108
with self.lock_write():
4109
super(BranchOnlyStack, self).set(name, value)
4110
# Force a write to persistent storage
4111
self.store.save_changes()
4113
def remove(self, name):
4114
with self.lock_write():
4115
super(BranchOnlyStack, self).remove(name)
4116
# Force a write to persistent storage
4117
self.store.save_changes()
4120
class cmd_config(commands.Command):
4121
__doc__ = """Display, set or remove a configuration option.
4123
Display the active value for option NAME.
4125
If --all is specified, NAME is interpreted as a regular expression and all
4126
matching options are displayed mentioning their scope and without resolving
4127
option references in the value). The active value that bzr will take into
4128
account is the first one displayed for each option.
4130
If NAME is not given, --all .* is implied (all options are displayed for the
4133
Setting a value is achieved by using NAME=value without spaces. The value
4134
is set in the most relevant scope and can be checked by displaying the
4137
Removing a value is achieved by using --remove NAME.
4140
takes_args = ['name?']
4144
# FIXME: This should be a registry option so that plugins can register
4145
# their own config files (or not) and will also address
4146
# http://pad.lv/788991 -- vila 20101115
4147
commands.Option('scope', help='Reduce the scope to the specified'
4148
' configuration file.',
4150
commands.Option('all',
4151
help='Display all the defined values for the matching options.',
4153
commands.Option('remove', help='Remove the option from'
4154
' the configuration file.'),
4157
_see_also = ['configuration']
4159
@commands.display_command
4160
def run(self, name=None, all=False, directory=None, scope=None,
4162
if directory is None:
4164
directory = directory_service.directories.dereference(directory)
4165
directory = urlutils.normalize_url(directory)
4167
raise errors.BzrError(
4168
'--all and --remove are mutually exclusive.')
4170
# Delete the option in the given scope
4171
self._remove_config_option(name, directory, scope)
4173
# Defaults to all options
4174
self._show_matching_options('.*', directory, scope)
4177
name, value = name.split('=', 1)
4179
# Display the option(s) value(s)
4181
self._show_matching_options(name, directory, scope)
4183
self._show_value(name, directory, scope)
4186
raise errors.BzrError(
4187
'Only one option can be set.')
4188
# Set the option value
4189
self._set_config_option(name, value, directory, scope)
4191
def _get_stack(self, directory, scope=None, write_access=False):
4192
"""Get the configuration stack specified by ``directory`` and ``scope``.
4194
:param directory: Where the configurations are derived from.
4196
:param scope: A specific config to start from.
4198
:param write_access: Whether a write access to the stack will be
4201
# FIXME: scope should allow access to plugin-specific stacks (even
4202
# reduced to the plugin-specific store), related to
4203
# http://pad.lv/788991 -- vila 2011-11-15
4204
if scope is not None:
4205
if scope == 'breezy':
4206
return GlobalStack()
4207
elif scope == 'locations':
4208
return LocationStack(directory)
4209
elif scope == 'branch':
4211
controldir.ControlDir.open_containing_tree_or_branch(
4214
self.add_cleanup(br.lock_write().unlock)
4215
return br.get_config_stack()
4216
raise NoSuchConfig(scope)
4220
controldir.ControlDir.open_containing_tree_or_branch(
4223
self.add_cleanup(br.lock_write().unlock)
4224
return br.get_config_stack()
4225
except errors.NotBranchError:
4226
return LocationStack(directory)
4228
def _quote_multiline(self, value):
4230
value = '"""' + value + '"""'
4233
def _show_value(self, name, directory, scope):
4234
conf = self._get_stack(directory, scope)
4235
value = conf.get(name, expand=True, convert=False)
4236
if value is not None:
4237
# Quote the value appropriately
4238
value = self._quote_multiline(value)
4239
self.outf.write('%s\n' % (value,))
4241
raise NoSuchConfigOption(name)
4243
def _show_matching_options(self, name, directory, scope):
4244
name = lazy_regex.lazy_compile(name)
4245
# We want any error in the regexp to be raised *now* so we need to
4246
# avoid the delay introduced by the lazy regexp. But, we still do
4247
# want the nicer errors raised by lazy_regex.
4248
name._compile_and_collapse()
4251
conf = self._get_stack(directory, scope)
4252
for store, section in conf.iter_sections():
4253
for oname in section.iter_option_names():
4254
if name.search(oname):
4255
if cur_store_id != store.id:
4256
# Explain where the options are defined
4257
self.outf.write('%s:\n' % (store.id,))
4258
cur_store_id = store.id
4260
if (section.id is not None and cur_section != section.id):
4261
# Display the section id as it appears in the store
4262
# (None doesn't appear by definition)
4263
self.outf.write(' [%s]\n' % (section.id,))
4264
cur_section = section.id
4265
value = section.get(oname, expand=False)
4266
# Quote the value appropriately
4267
value = self._quote_multiline(value)
4268
self.outf.write(' %s = %s\n' % (oname, value))
4270
def _set_config_option(self, name, value, directory, scope):
4271
conf = self._get_stack(directory, scope, write_access=True)
4272
conf.set(name, value)
4273
# Explicitly save the changes
4274
conf.store.save_changes()
4276
def _remove_config_option(self, name, directory, scope):
4278
raise errors.BzrCommandError(
4279
'--remove expects an option to remove.')
4280
conf = self._get_stack(directory, scope, write_access=True)
4283
# Explicitly save the changes
4284
conf.store.save_changes()
4286
raise NoSuchConfigOption(name)
4291
# We need adapters that can build a Store or a Stack in a test context. Test
4292
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4293
# themselves. The builder will receive a test instance and should return a
4294
# ready-to-use store or stack. Plugins that define new store/stacks can also
4295
# register themselves here to be tested against the tests defined in
4296
# breezy.tests.test_config. Note that the builder can be called multiple times
4297
# for the same test.
4299
# The registered object should be a callable receiving a test instance
4300
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4302
test_store_builder_registry = registry.Registry()
4304
# The registered object should be a callable receiving a test instance
4305
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4307
test_stack_builder_registry = registry.Registry()