1508
2265
configobj[name] = value
1510
2267
configobj.setdefault(section, {})[name] = value
2268
for hook in OldConfigHooks['set']:
2269
hook(self, name, value)
2270
self._set_configobj(configobj)
2272
def remove_option(self, option_name, section_name=None):
2273
configobj = self._get_configobj()
2274
if section_name is None:
2275
del configobj[option_name]
2277
del configobj[section_name][option_name]
2278
for hook in OldConfigHooks['remove']:
2279
hook(self, option_name)
1511
2280
self._set_configobj(configobj)
1513
2282
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2284
f = BytesIO(self._transport.get_bytes(self._filename))
2285
for hook in OldConfigHooks['load']:
1516
2288
except errors.NoSuchFile:
2290
except errors.PermissionDenied as e:
2291
trace.warning("Permission denied while trying to open "
2292
"configuration file %s.", urlutils.unescape_for_display(
2293
urlutils.join(self._transport.base, self._filename), "utf-8"))
2296
def _external_url(self):
2297
return urlutils.join(self._transport.external_url(), self._filename)
1519
2299
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2300
f = self._get_config_file()
2303
conf = ConfigObj(f, encoding='utf-8')
2304
except configobj.ConfigObjError as e:
2305
raise ParseConfigError(e.errors, self._external_url())
2306
except UnicodeDecodeError:
2307
raise ConfigContentError(self._external_url())
1522
2312
def _set_configobj(self, configobj):
1523
out_file = StringIO()
2313
out_file = BytesIO()
1524
2314
configobj.write(out_file)
1525
2315
out_file.seek(0)
1526
2316
self._transport.put_file(self._filename, out_file)
2317
for hook in OldConfigHooks['save']:
2321
class Option(object):
2322
"""An option definition.
2324
The option *values* are stored in config files and found in sections.
2326
Here we define various properties about the option itself, its default
2327
value, how to convert it from stores, what to do when invalid values are
2328
encoutered, in which config files it can be stored.
2331
def __init__(self, name, override_from_env=None,
2332
default=None, default_from_env=None,
2333
help=None, from_unicode=None, invalid=None, unquote=True):
2334
"""Build an option definition.
2336
:param name: the name used to refer to the option.
2338
:param override_from_env: A list of environment variables which can
2339
provide override any configuration setting.
2341
:param default: the default value to use when none exist in the config
2342
stores. This is either a string that ``from_unicode`` will convert
2343
into the proper type, a callable returning a unicode string so that
2344
``from_unicode`` can be used on the return value, or a python
2345
object that can be stringified (so only the empty list is supported
2348
:param default_from_env: A list of environment variables which can
2349
provide a default value. 'default' will be used only if none of the
2350
variables specified here are set in the environment.
2352
:param help: a doc string to explain the option to the user.
2354
:param from_unicode: a callable to convert the unicode string
2355
representing the option value in a store or its default value.
2357
:param invalid: the action to be taken when an invalid value is
2358
encountered in a store. This is called only when from_unicode is
2359
invoked to convert a string and returns None or raise ValueError or
2360
TypeError. Accepted values are: None (ignore invalid values),
2361
'warning' (emit a warning), 'error' (emit an error message and
2364
:param unquote: should the unicode value be unquoted before conversion.
2365
This should be used only when the store providing the values cannot
2366
safely unquote them (see http://pad.lv/906897). It is provided so
2367
daughter classes can handle the quoting themselves.
2369
if override_from_env is None:
2370
override_from_env = []
2371
if default_from_env is None:
2372
default_from_env = []
2374
self.override_from_env = override_from_env
2375
# Convert the default value to a unicode string so all values are
2376
# strings internally before conversion (via from_unicode) is attempted.
2379
elif isinstance(default, list):
2380
# Only the empty list is supported
2382
raise AssertionError(
2383
'Only empty lists are supported as default values')
2385
elif isinstance(default, (binary_type, text_type, bool, int, float)):
2386
# Rely on python to convert strings, booleans and integers
2387
self.default = u'%s' % (default,)
2388
elif callable(default):
2389
self.default = default
2391
# other python objects are not expected
2392
raise AssertionError('%r is not supported as a default value'
2394
self.default_from_env = default_from_env
2396
self.from_unicode = from_unicode
2397
self.unquote = unquote
2398
if invalid and invalid not in ('warning', 'error'):
2399
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2400
self.invalid = invalid
2406
def convert_from_unicode(self, store, unicode_value):
2407
if self.unquote and store is not None and unicode_value is not None:
2408
unicode_value = store.unquote(unicode_value)
2409
if self.from_unicode is None or unicode_value is None:
2410
# Don't convert or nothing to convert
2411
return unicode_value
2413
converted = self.from_unicode(unicode_value)
2414
except (ValueError, TypeError):
2415
# Invalid values are ignored
2417
if converted is None and self.invalid is not None:
2418
# The conversion failed
2419
if self.invalid == 'warning':
2420
trace.warning('Value "%s" is not valid for "%s"',
2421
unicode_value, self.name)
2422
elif self.invalid == 'error':
2423
raise ConfigOptionValueError(self.name, unicode_value)
2426
def get_override(self):
2428
for var in self.override_from_env:
2430
# If the env variable is defined, its value takes precedence
2431
value = os.environ[var].decode(osutils.get_user_encoding())
2437
def get_default(self):
2439
for var in self.default_from_env:
2441
# If the env variable is defined, its value is the default one
2442
value = os.environ[var]
2444
value = value.decode(osutils.get_user_encoding())
2449
# Otherwise, fallback to the value defined at registration
2450
if callable(self.default):
2451
value = self.default()
2452
if not isinstance(value, text_type):
2453
raise AssertionError(
2454
"Callable default value for '%s' should be unicode"
2457
value = self.default
2460
def get_help_topic(self):
2463
def get_help_text(self, additional_see_also=None, plain=True):
2465
from breezy import help_topics
2466
result += help_topics._format_see_also(additional_see_also)
2468
result = help_topics.help_as_plain_text(result)
2472
# Predefined converters to get proper values from store
2474
def bool_from_store(unicode_str):
2475
return ui.bool_from_string(unicode_str)
2478
def int_from_store(unicode_str):
2479
return int(unicode_str)
2482
_unit_suffixes = dict(K=10**3, M=10**6, G=10**9)
2484
def int_SI_from_store(unicode_str):
2485
"""Convert a human readable size in SI units, e.g 10MB into an integer.
2487
Accepted suffixes are K,M,G. It is case-insensitive and may be followed
2488
by a trailing b (i.e. Kb, MB). This is intended to be practical and not
2491
:return Integer, expanded to its base-10 value if a proper SI unit is
2492
found, None otherwise.
2494
regexp = "^(\d+)(([" + ''.join(_unit_suffixes) + "])b?)?$"
2495
p = re.compile(regexp, re.IGNORECASE)
2496
m = p.match(unicode_str)
2499
val, _, unit = m.groups()
2503
coeff = _unit_suffixes[unit.upper()]
2505
raise ValueError(gettext('{0} is not an SI unit.').format(unit))
2510
def float_from_store(unicode_str):
2511
return float(unicode_str)
2514
# Use an empty dict to initialize an empty configobj avoiding all parsing and
2516
_list_converter_config = configobj.ConfigObj(
2517
{}, encoding='utf-8', list_values=True, interpolation=False)
2520
class ListOption(Option):
2522
def __init__(self, name, default=None, default_from_env=None,
2523
help=None, invalid=None):
2524
"""A list Option definition.
2526
This overrides the base class so the conversion from a unicode string
2527
can take quoting into account.
2529
super(ListOption, self).__init__(
2530
name, default=default, default_from_env=default_from_env,
2531
from_unicode=self.from_unicode, help=help,
2532
invalid=invalid, unquote=False)
2534
def from_unicode(self, unicode_str):
2535
if not isinstance(unicode_str, string_types):
2537
# Now inject our string directly as unicode. All callers got their
2538
# value from configobj, so values that need to be quoted are already
2540
_list_converter_config.reset()
2541
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2542
maybe_list = _list_converter_config['list']
2543
if isinstance(maybe_list, string_types):
2545
# A single value, most probably the user forgot (or didn't care
2546
# to add) the final ','
2549
# The empty string, convert to empty list
2552
# We rely on ConfigObj providing us with a list already
2557
class RegistryOption(Option):
2558
"""Option for a choice from a registry."""
2560
def __init__(self, name, registry, default_from_env=None,
2561
help=None, invalid=None):
2562
"""A registry based Option definition.
2564
This overrides the base class so the conversion from a unicode string
2565
can take quoting into account.
2567
super(RegistryOption, self).__init__(
2568
name, default=lambda: unicode(registry.default_key),
2569
default_from_env=default_from_env,
2570
from_unicode=self.from_unicode, help=help,
2571
invalid=invalid, unquote=False)
2572
self.registry = registry
2574
def from_unicode(self, unicode_str):
2575
if not isinstance(unicode_str, string_types):
2578
return self.registry.get(unicode_str)
2581
"Invalid value %s for %s."
2582
"See help for a list of possible values." % (unicode_str,
2587
ret = [self._help, "\n\nThe following values are supported:\n"]
2588
for key in self.registry.keys():
2589
ret.append(" %s - %s\n" % (key, self.registry.get_help(key)))
2593
_option_ref_re = lazy_regex.lazy_compile('({[^\d\W](?:\.\w|-\w|\w)*})')
2594
"""Describes an expandable option reference.
2596
We want to match the most embedded reference first.
2598
I.e. for '{{foo}}' we will get '{foo}',
2599
for '{bar{baz}}' we will get '{baz}'
2602
def iter_option_refs(string):
2603
# Split isolate refs so every other chunk is a ref
2605
for chunk in _option_ref_re.split(string):
2610
class OptionRegistry(registry.Registry):
2611
"""Register config options by their name.
2613
This overrides ``registry.Registry`` to simplify registration by acquiring
2614
some information from the option object itself.
2617
def _check_option_name(self, option_name):
2618
"""Ensures an option name is valid.
2620
:param option_name: The name to validate.
2622
if _option_ref_re.match('{%s}' % option_name) is None:
2623
raise IllegalOptionName(option_name)
2625
def register(self, option):
2626
"""Register a new option to its name.
2628
:param option: The option to register. Its name is used as the key.
2630
self._check_option_name(option.name)
2631
super(OptionRegistry, self).register(option.name, option,
2634
def register_lazy(self, key, module_name, member_name):
2635
"""Register a new option to be loaded on request.
2637
:param key: the key to request the option later. Since the registration
2638
is lazy, it should be provided and match the option name.
2640
:param module_name: the python path to the module. Such as 'os.path'.
2642
:param member_name: the member of the module to return. If empty or
2643
None, get() will return the module itself.
2645
self._check_option_name(key)
2646
super(OptionRegistry, self).register_lazy(key,
2647
module_name, member_name)
2649
def get_help(self, key=None):
2650
"""Get the help text associated with the given key"""
2651
option = self.get(key)
2652
the_help = option.help
2653
if callable(the_help):
2654
return the_help(self, key)
2658
option_registry = OptionRegistry()
2661
# Registered options in lexicographical order
2663
option_registry.register(
2664
Option('append_revisions_only',
2665
default=None, from_unicode=bool_from_store, invalid='warning',
2667
Whether to only append revisions to the mainline.
2669
If this is set to true, then it is not possible to change the
2670
existing mainline of the branch.
2672
option_registry.register(
2673
ListOption('acceptable_keys',
2676
List of GPG key patterns which are acceptable for verification.
2678
option_registry.register(
2679
Option('add.maximum_file_size',
2680
default=u'20MB', from_unicode=int_SI_from_store,
2682
Size above which files should be added manually.
2684
Files below this size are added automatically when using ``bzr add`` without
2687
A negative value means disable the size check.
2689
option_registry.register(
2691
default=None, from_unicode=bool_from_store,
2693
Is the branch bound to ``bound_location``.
2695
If set to "True", the branch should act as a checkout, and push each commit to
2696
the bound_location. This option is normally set by ``bind``/``unbind``.
2698
See also: bound_location.
2700
option_registry.register(
2701
Option('bound_location',
2704
The location that commits should go to when acting as a checkout.
2706
This option is normally set by ``bind``.
2710
option_registry.register(
2711
Option('branch.fetch_tags', default=False, from_unicode=bool_from_store,
2713
Whether revisions associated with tags should be fetched.
2715
option_registry.register_lazy(
2716
'bzr.transform.orphan_policy', 'breezy.transform', 'opt_transform_orphan')
2717
option_registry.register(
2718
Option('bzr.workingtree.worth_saving_limit', default=10,
2719
from_unicode=int_from_store, invalid='warning',
2721
How many changes before saving the dirstate.
2723
-1 means that we will never rewrite the dirstate file for only
2724
stat-cache changes. Regardless of this setting, we will always rewrite
2725
the dirstate file if a file is added/removed/renamed/etc. This flag only
2726
affects the behavior of updating the dirstate file after we notice that
2727
a file has been touched.
2729
option_registry.register(
2730
Option('bugtracker', default=None,
2732
Default bug tracker to use.
2734
This bug tracker will be used for example when marking bugs
2735
as fixed using ``bzr commit --fixes``, if no explicit
2736
bug tracker was specified.
2738
option_registry.register(
2739
Option('check_signatures', default=CHECK_IF_POSSIBLE,
2740
from_unicode=signature_policy_from_unicode,
2742
GPG checking policy.
2744
Possible values: require, ignore, check-available (default)
2746
this option will control whether bzr will require good gpg
2747
signatures, ignore them, or check them if they are
2750
option_registry.register(
2751
Option('child_submit_format',
2752
help='''The preferred format of submissions to this branch.'''))
2753
option_registry.register(
2754
Option('child_submit_to',
2755
help='''Where submissions to this branch are mailed to.'''))
2756
option_registry.register(
2757
Option('create_signatures', default=SIGN_WHEN_REQUIRED,
2758
from_unicode=signing_policy_from_unicode,
2762
Possible values: always, never, when-required (default)
2764
This option controls whether bzr will always create
2765
gpg signatures or not on commits.
2767
option_registry.register(
2768
Option('dirstate.fdatasync', default=True,
2769
from_unicode=bool_from_store,
2771
Flush dirstate changes onto physical disk?
2773
If true (default), working tree metadata changes are flushed through the
2774
OS buffers to physical disk. This is somewhat slower, but means data
2775
should not be lost if the machine crashes. See also repository.fdatasync.
2777
option_registry.register(
2778
ListOption('debug_flags', default=[],
2779
help='Debug flags to activate.'))
2780
option_registry.register(
2781
Option('default_format', default='2a',
2782
help='Format used when creating branches.'))
2783
option_registry.register(
2784
Option('dpush_strict', default=None,
2785
from_unicode=bool_from_store,
2787
The default value for ``dpush --strict``.
2789
If present, defines the ``--strict`` option default value for checking
2790
uncommitted changes before pushing into a different VCS without any
2791
custom bzr metadata.
2793
option_registry.register(
2795
help='The command called to launch an editor to enter a message.'))
2796
option_registry.register(
2797
Option('email', override_from_env=['BRZ_EMAIL'], default=default_email,
2798
help='The users identity'))
2799
option_registry.register(
2800
Option('gpg_signing_key',
2803
GPG key to use for signing.
2805
This defaults to the first key associated with the users email.
2807
option_registry.register(
2809
help='Language to translate messages into.'))
2810
option_registry.register(
2811
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2813
Steal locks that appears to be dead.
2815
If set to True, bzr will check if a lock is supposed to be held by an
2816
active process from the same user on the same machine. If the user and
2817
machine match, but no process with the given PID is active, then bzr
2818
will automatically break the stale lock, and create a new lock for
2820
Otherwise, bzr will prompt as normal to break the lock.
2822
option_registry.register(
2823
Option('log_format', default='long',
2825
Log format to use when displaying revisions.
2827
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2828
may be provided by plugins.
2830
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2832
option_registry.register(
2833
Option('output_encoding',
2834
help= 'Unicode encoding for output'
2835
' (terminal encoding if not specified).'))
2836
option_registry.register(
2837
Option('parent_location',
2840
The location of the default branch for pull or merge.
2842
This option is normally set when creating a branch, the first ``pull`` or by
2843
``pull --remember``.
2845
option_registry.register(
2846
Option('post_commit', default=None,
2848
Post commit functions.
2850
An ordered list of python functions to call, separated by spaces.
2852
Each function takes branch, rev_id as parameters.
2854
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2856
option_registry.register(
2857
Option('public_branch',
2860
A publically-accessible version of this branch.
2862
This implies that the branch setting this option is not publically-accessible.
2863
Used and set by ``bzr send``.
2865
option_registry.register(
2866
Option('push_location',
2869
The location of the default branch for push.
2871
This option is normally set by the first ``push`` or ``push --remember``.
2873
option_registry.register(
2874
Option('push_strict', default=None,
2875
from_unicode=bool_from_store,
2877
The default value for ``push --strict``.
2879
If present, defines the ``--strict`` option default value for checking
2880
uncommitted changes before sending a merge directive.
2882
option_registry.register(
2883
Option('repository.fdatasync', default=True,
2884
from_unicode=bool_from_store,
2886
Flush repository changes onto physical disk?
2888
If true (default), repository changes are flushed through the OS buffers
2889
to physical disk. This is somewhat slower, but means data should not be
2890
lost if the machine crashes. See also dirstate.fdatasync.
2892
option_registry.register_lazy('smtp_server',
2893
'breezy.smtp_connection', 'smtp_server')
2894
option_registry.register_lazy('smtp_password',
2895
'breezy.smtp_connection', 'smtp_password')
2896
option_registry.register_lazy('smtp_username',
2897
'breezy.smtp_connection', 'smtp_username')
2898
option_registry.register(
2899
Option('selftest.timeout',
2901
from_unicode=int_from_store,
2902
help='Abort selftest if one test takes longer than this many seconds',
2905
option_registry.register(
2906
Option('send_strict', default=None,
2907
from_unicode=bool_from_store,
2909
The default value for ``send --strict``.
2911
If present, defines the ``--strict`` option default value for checking
2912
uncommitted changes before sending a bundle.
2915
option_registry.register(
2916
Option('serve.client_timeout',
2917
default=300.0, from_unicode=float_from_store,
2918
help="If we wait for a new request from a client for more than"
2919
" X seconds, consider the client idle, and hangup."))
2920
option_registry.register(
2921
Option('stacked_on_location',
2923
help="""The location where this branch is stacked on."""))
2924
option_registry.register(
2925
Option('submit_branch',
2928
The branch you intend to submit your current work to.
2930
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2931
by the ``submit:`` revision spec.
2933
option_registry.register(
2935
help='''Where submissions from this branch are mailed to.'''))
2936
option_registry.register(
2937
ListOption('suppress_warnings',
2939
help="List of warning classes to suppress."))
2940
option_registry.register(
2941
Option('validate_signatures_in_log', default=False,
2942
from_unicode=bool_from_store, invalid='warning',
2943
help='''Whether to validate signatures in brz log.'''))
2944
option_registry.register_lazy('ssl.ca_certs',
2945
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_ca_certs')
2947
option_registry.register_lazy('ssl.cert_reqs',
2948
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_cert_reqs')
2951
class Section(object):
2952
"""A section defines a dict of option name => value.
2954
This is merely a read-only dict which can add some knowledge about the
2955
options. It is *not* a python dict object though and doesn't try to mimic
2959
def __init__(self, section_id, options):
2960
self.id = section_id
2961
# We re-use the dict-like object received
2962
self.options = options
2964
def get(self, name, default=None, expand=True):
2965
return self.options.get(name, default)
2967
def iter_option_names(self):
2968
for k in self.options.keys():
2972
# Mostly for debugging use
2973
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2976
_NewlyCreatedOption = object()
2977
"""Was the option created during the MutableSection lifetime"""
2978
_DeletedOption = object()
2979
"""Was the option deleted during the MutableSection lifetime"""
2982
class MutableSection(Section):
2983
"""A section allowing changes and keeping track of the original values."""
2985
def __init__(self, section_id, options):
2986
super(MutableSection, self).__init__(section_id, options)
2987
self.reset_changes()
2989
def set(self, name, value):
2990
if name not in self.options:
2991
# This is a new option
2992
self.orig[name] = _NewlyCreatedOption
2993
elif name not in self.orig:
2994
self.orig[name] = self.get(name, None)
2995
self.options[name] = value
2997
def remove(self, name):
2998
if name not in self.orig and name in self.options:
2999
self.orig[name] = self.get(name, None)
3000
del self.options[name]
3002
def reset_changes(self):
3005
def apply_changes(self, dirty, store):
3006
"""Apply option value changes.
3008
``self`` has been reloaded from the persistent storage. ``dirty``
3009
contains the changes made since the previous loading.
3011
:param dirty: the mutable section containing the changes.
3013
:param store: the store containing the section
3015
for k, expected in dirty.orig.items():
3016
actual = dirty.get(k, _DeletedOption)
3017
reloaded = self.get(k, _NewlyCreatedOption)
3018
if actual is _DeletedOption:
3019
if k in self.options:
3023
# Report concurrent updates in an ad-hoc way. This should only
3024
# occurs when different processes try to update the same option
3025
# which is not supported (as in: the config framework is not meant
3026
# to be used as a sharing mechanism).
3027
if expected != reloaded:
3028
if actual is _DeletedOption:
3029
actual = '<DELETED>'
3030
if reloaded is _NewlyCreatedOption:
3031
reloaded = '<CREATED>'
3032
if expected is _NewlyCreatedOption:
3033
expected = '<CREATED>'
3034
# Someone changed the value since we get it from the persistent
3036
trace.warning(gettext(
3037
"Option {0} in section {1} of {2} was changed"
3038
" from {3} to {4}. The {5} value will be saved.".format(
3039
k, self.id, store.external_url(), expected,
3041
# No need to keep track of these changes
3042
self.reset_changes()
3045
class Store(object):
3046
"""Abstract interface to persistent storage for configuration options."""
3048
readonly_section_class = Section
3049
mutable_section_class = MutableSection
3052
# Which sections need to be saved (by section id). We use a dict here
3053
# so the dirty sections can be shared by multiple callers.
3054
self.dirty_sections = {}
3056
def is_loaded(self):
3057
"""Returns True if the Store has been loaded.
3059
This is used to implement lazy loading and ensure the persistent
3060
storage is queried only when needed.
3062
raise NotImplementedError(self.is_loaded)
3065
"""Loads the Store from persistent storage."""
3066
raise NotImplementedError(self.load)
3068
def _load_from_string(self, bytes):
3069
"""Create a store from a string in configobj syntax.
3071
:param bytes: A string representing the file content.
3073
raise NotImplementedError(self._load_from_string)
3076
"""Unloads the Store.
3078
This should make is_loaded() return False. This is used when the caller
3079
knows that the persistent storage has changed or may have change since
3082
raise NotImplementedError(self.unload)
3084
def quote(self, value):
3085
"""Quote a configuration option value for storing purposes.
3087
This allows Stacks to present values as they will be stored.
3091
def unquote(self, value):
3092
"""Unquote a configuration option value into unicode.
3094
The received value is quoted as stored.
3099
"""Saves the Store to persistent storage."""
3100
raise NotImplementedError(self.save)
3102
def _need_saving(self):
3103
for s in self.dirty_sections.values():
3105
# At least one dirty section contains a modification
3109
def apply_changes(self, dirty_sections):
3110
"""Apply changes from dirty sections while checking for coherency.
3112
The Store content is discarded and reloaded from persistent storage to
3113
acquire up-to-date values.
3115
Dirty sections are MutableSection which kept track of the value they
3116
are expected to update.
3118
# We need an up-to-date version from the persistent storage, unload the
3119
# store. The reload will occur when needed (triggered by the first
3120
# get_mutable_section() call below.
3122
# Apply the changes from the preserved dirty sections
3123
for section_id, dirty in dirty_sections.items():
3124
clean = self.get_mutable_section(section_id)
3125
clean.apply_changes(dirty, self)
3126
# Everything is clean now
3127
self.dirty_sections = {}
3129
def save_changes(self):
3130
"""Saves the Store to persistent storage if changes occurred.
3132
Apply the changes recorded in the mutable sections to a store content
3133
refreshed from persistent storage.
3135
raise NotImplementedError(self.save_changes)
3137
def external_url(self):
3138
raise NotImplementedError(self.external_url)
3140
def get_sections(self):
3141
"""Returns an ordered iterable of existing sections.
3143
:returns: An iterable of (store, section).
3145
raise NotImplementedError(self.get_sections)
3147
def get_mutable_section(self, section_id=None):
3148
"""Returns the specified mutable section.
3150
:param section_id: The section identifier
3152
raise NotImplementedError(self.get_mutable_section)
3155
# Mostly for debugging use
3156
return "<config.%s(%s)>" % (self.__class__.__name__,
3157
self.external_url())
3160
class CommandLineStore(Store):
3161
"A store to carry command line overrides for the config options."""
3163
def __init__(self, opts=None):
3164
super(CommandLineStore, self).__init__()
3171
# The dict should be cleared but not replaced so it can be shared.
3172
self.options.clear()
3174
def _from_cmdline(self, overrides):
3175
# Reset before accepting new definitions
3177
for over in overrides:
3179
name, value = over.split('=', 1)
3181
raise errors.BzrCommandError(
3182
gettext("Invalid '%s', should be of the form 'name=value'")
3184
self.options[name] = value
3186
def external_url(self):
3187
# Not an url but it makes debugging easier and is never needed
3191
def get_sections(self):
3192
yield self, self.readonly_section_class(None, self.options)
3195
class IniFileStore(Store):
3196
"""A config Store using ConfigObj for storage.
3198
:ivar _config_obj: Private member to hold the ConfigObj instance used to
3199
serialize/deserialize the config file.
3203
"""A config Store using ConfigObj for storage.
3205
super(IniFileStore, self).__init__()
3206
self._config_obj = None
3208
def is_loaded(self):
3209
return self._config_obj != None
3212
self._config_obj = None
3213
self.dirty_sections = {}
3215
def _load_content(self):
3216
"""Load the config file bytes.
3218
This should be provided by subclasses
3220
:return: Byte string
3222
raise NotImplementedError(self._load_content)
3224
def _save_content(self, content):
3225
"""Save the config file bytes.
3227
This should be provided by subclasses
3229
:param content: Config file bytes to write
3231
raise NotImplementedError(self._save_content)
3234
"""Load the store from the associated file."""
3235
if self.is_loaded():
3237
content = self._load_content()
3238
self._load_from_string(content)
3239
for hook in ConfigHooks['load']:
3242
def _load_from_string(self, bytes):
3243
"""Create a config store from a string.
3245
:param bytes: A string representing the file content.
3247
if self.is_loaded():
3248
raise AssertionError('Already loaded: %r' % (self._config_obj,))
3249
co_input = BytesIO(bytes)
3251
# The config files are always stored utf8-encoded
3252
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3254
except configobj.ConfigObjError as e:
3255
self._config_obj = None
3256
raise ParseConfigError(e.errors, self.external_url())
3257
except UnicodeDecodeError:
3258
raise ConfigContentError(self.external_url())
3260
def save_changes(self):
3261
if not self.is_loaded():
3264
if not self._need_saving():
3266
# Preserve the current version
3267
dirty_sections = self.dirty_sections.copy()
3268
self.apply_changes(dirty_sections)
3269
# Save to the persistent storage
3273
if not self.is_loaded():
3277
self._config_obj.write(out)
3278
self._save_content(out.getvalue())
3279
for hook in ConfigHooks['save']:
3282
def get_sections(self):
3283
"""Get the configobj section in the file order.
3285
:returns: An iterable of (store, section).
3287
# We need a loaded store
3290
except (errors.NoSuchFile, errors.PermissionDenied):
3291
# If the file can't be read, there is no sections
3293
cobj = self._config_obj
3295
yield self, self.readonly_section_class(None, cobj)
3296
for section_name in cobj.sections:
3298
self.readonly_section_class(section_name,
3299
cobj[section_name]))
3301
def get_mutable_section(self, section_id=None):
3302
# We need a loaded store
3305
except errors.NoSuchFile:
3306
# The file doesn't exist, let's pretend it was empty
3307
self._load_from_string(b'')
3308
if section_id in self.dirty_sections:
3309
# We already created a mutable section for this id
3310
return self.dirty_sections[section_id]
3311
if section_id is None:
3312
section = self._config_obj
3314
section = self._config_obj.setdefault(section_id, {})
3315
mutable_section = self.mutable_section_class(section_id, section)
3316
# All mutable sections can become dirty
3317
self.dirty_sections[section_id] = mutable_section
3318
return mutable_section
3320
def quote(self, value):
3322
# configobj conflates automagical list values and quoting
3323
self._config_obj.list_values = True
3324
return self._config_obj._quote(value)
3326
self._config_obj.list_values = False
3328
def unquote(self, value):
3329
if value and isinstance(value, string_types):
3330
# _unquote doesn't handle None nor empty strings nor anything that
3331
# is not a string, really.
3332
value = self._config_obj._unquote(value)
3335
def external_url(self):
3336
# Since an IniFileStore can be used without a file (at least in tests),
3337
# it's better to provide something than raising a NotImplementedError.
3338
# All daughter classes are supposed to provide an implementation
3340
return 'In-Process Store, no URL'
3343
class TransportIniFileStore(IniFileStore):
3344
"""IniFileStore that loads files from a transport.
3346
:ivar transport: The transport object where the config file is located.
3348
:ivar file_name: The config file basename in the transport directory.
3351
def __init__(self, transport, file_name):
3352
"""A Store using a ini file on a Transport
3354
:param transport: The transport object where the config file is located.
3355
:param file_name: The config file basename in the transport directory.
3357
super(TransportIniFileStore, self).__init__()
3358
self.transport = transport
3359
self.file_name = file_name
3361
def _load_content(self):
3363
return self.transport.get_bytes(self.file_name)
3364
except errors.PermissionDenied:
3365
trace.warning("Permission denied while trying to load "
3366
"configuration store %s.", self.external_url())
3369
def _save_content(self, content):
3370
self.transport.put_bytes(self.file_name, content)
3372
def external_url(self):
3373
# FIXME: external_url should really accepts an optional relpath
3374
# parameter (bug #750169) :-/ -- vila 2011-04-04
3375
# The following will do in the interim but maybe we don't want to
3376
# expose a path here but rather a config ID and its associated
3377
# object </hand wawe>.
3378
return urlutils.join(
3379
self.transport.external_url(), urlutils.escape(self.file_name))
3382
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3383
# unlockable stores for use with objects that can already ensure the locking
3384
# (think branches). If different stores (not based on ConfigObj) are created,
3385
# they may face the same issue.
3388
class LockableIniFileStore(TransportIniFileStore):
3389
"""A ConfigObjStore using locks on save to ensure store integrity."""
3391
def __init__(self, transport, file_name, lock_dir_name=None):
3392
"""A config Store using ConfigObj for storage.
3394
:param transport: The transport object where the config file is located.
3396
:param file_name: The config file basename in the transport directory.
3398
if lock_dir_name is None:
3399
lock_dir_name = 'lock'
3400
self.lock_dir_name = lock_dir_name
3401
super(LockableIniFileStore, self).__init__(transport, file_name)
3402
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3404
def lock_write(self, token=None):
3405
"""Takes a write lock in the directory containing the config file.
3407
If the directory doesn't exist it is created.
3409
# FIXME: This doesn't check the ownership of the created directories as
3410
# ensure_config_dir_exists does. It should if the transport is local
3411
# -- vila 2011-04-06
3412
self.transport.create_prefix()
3413
return self._lock.lock_write(token)
3418
def break_lock(self):
3419
self._lock.break_lock()
3423
# We need to be able to override the undecorated implementation
3424
self.save_without_locking()
3426
def save_without_locking(self):
3427
super(LockableIniFileStore, self).save()
3430
# FIXME: global, breezy, shouldn't that be 'user' instead or even
3431
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
3432
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
3434
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
3435
# functions or a registry will make it easier and clearer for tests, focusing
3436
# on the relevant parts of the API that needs testing -- vila 20110503 (based
3437
# on a poolie's remark)
3438
class GlobalStore(LockableIniFileStore):
3439
"""A config store for global options.
3441
There is a single GlobalStore for a given process.
3444
def __init__(self, possible_transports=None):
3445
(path, kind) = _config_dir()
3446
t = transport.get_transport_from_path(
3447
path, possible_transports=possible_transports)
3448
filename = {'bazaar': 'bazaar.conf', 'breezy': 'breezy.conf'}[kind]
3449
super(GlobalStore, self).__init__(t, filename)
3453
class LocationStore(LockableIniFileStore):
3454
"""A config store for options specific to a location.
3456
There is a single LocationStore for a given process.
3459
def __init__(self, possible_transports=None):
3460
t = transport.get_transport_from_path(
3461
config_dir(), possible_transports=possible_transports)
3462
super(LocationStore, self).__init__(t, 'locations.conf')
3463
self.id = 'locations'
3466
class BranchStore(TransportIniFileStore):
3467
"""A config store for branch options.
3469
There is a single BranchStore for a given branch.
3472
def __init__(self, branch):
3473
super(BranchStore, self).__init__(branch.control_transport,
3475
self.branch = branch
3479
class ControlStore(LockableIniFileStore):
3481
def __init__(self, bzrdir):
3482
super(ControlStore, self).__init__(bzrdir.transport,
3484
lock_dir_name='branch_lock')
3488
class SectionMatcher(object):
3489
"""Select sections into a given Store.
3491
This is intended to be used to postpone getting an iterable of sections
3495
def __init__(self, store):
3498
def get_sections(self):
3499
# This is where we require loading the store so we can see all defined
3501
sections = self.store.get_sections()
3502
# Walk the revisions in the order provided
3503
for store, s in sections:
3507
def match(self, section):
3508
"""Does the proposed section match.
3510
:param section: A Section object.
3512
:returns: True if the section matches, False otherwise.
3514
raise NotImplementedError(self.match)
3517
class NameMatcher(SectionMatcher):
3519
def __init__(self, store, section_id):
3520
super(NameMatcher, self).__init__(store)
3521
self.section_id = section_id
3523
def match(self, section):
3524
return section.id == self.section_id
3527
class LocationSection(Section):
3529
def __init__(self, section, extra_path, branch_name=None):
3530
super(LocationSection, self).__init__(section.id, section.options)
3531
self.extra_path = extra_path
3532
if branch_name is None:
3534
self.locals = {'relpath': extra_path,
3535
'basename': urlutils.basename(extra_path),
3536
'branchname': branch_name}
3538
def get(self, name, default=None, expand=True):
3539
value = super(LocationSection, self).get(name, default)
3540
if value is not None and expand:
3541
policy_name = self.get(name + ':policy', None)
3542
policy = _policy_value.get(policy_name, POLICY_NONE)
3543
if policy == POLICY_APPENDPATH:
3544
value = urlutils.join(value, self.extra_path)
3545
# expand section local options right now (since POLICY_APPENDPATH
3546
# will never add options references, it's ok to expand after it).
3548
for is_ref, chunk in iter_option_refs(value):
3550
chunks.append(chunk)
3553
if ref in self.locals:
3554
chunks.append(self.locals[ref])
3556
chunks.append(chunk)
3557
value = ''.join(chunks)
3561
class StartingPathMatcher(SectionMatcher):
3562
"""Select sections for a given location respecting the Store order."""
3564
# FIXME: Both local paths and urls can be used for section names as well as
3565
# ``location`` to stay consistent with ``LocationMatcher`` which itself
3566
# inherited the fuzziness from the previous ``LocationConfig``
3567
# implementation. We probably need to revisit which encoding is allowed for
3568
# both ``location`` and section names and how we normalize
3569
# them. http://pad.lv/85479, http://pad.lv/437009 and http://359320 are
3570
# related too. -- vila 2012-01-04
3572
def __init__(self, store, location):
3573
super(StartingPathMatcher, self).__init__(store)
3574
if location.startswith('file://'):
3575
location = urlutils.local_path_from_url(location)
3576
self.location = location
3578
def get_sections(self):
3579
"""Get all sections matching ``location`` in the store.
3581
The most generic sections are described first in the store, then more
3582
specific ones can be provided for reduced scopes.
3584
The returned section are therefore returned in the reversed order so
3585
the most specific ones can be found first.
3587
location_parts = self.location.rstrip('/').split('/')
3589
# Later sections are more specific, they should be returned first
3590
for _, section in reversed(list(store.get_sections())):
3591
if section.id is None:
3592
# The no-name section is always included if present
3593
yield store, LocationSection(section, self.location)
3595
section_path = section.id
3596
if section_path.startswith('file://'):
3597
# the location is already a local path or URL, convert the
3598
# section id to the same format
3599
section_path = urlutils.local_path_from_url(section_path)
3600
if (self.location.startswith(section_path)
3601
or fnmatch.fnmatch(self.location, section_path)):
3602
section_parts = section_path.rstrip('/').split('/')
3603
extra_path = '/'.join(location_parts[len(section_parts):])
3604
yield store, LocationSection(section, extra_path)
3607
class LocationMatcher(SectionMatcher):
3609
def __init__(self, store, location):
3610
super(LocationMatcher, self).__init__(store)
3611
url, params = urlutils.split_segment_parameters(location)
3612
if location.startswith('file://'):
3613
location = urlutils.local_path_from_url(location)
3614
self.location = location
3615
branch_name = params.get('branch')
3616
if branch_name is None:
3617
self.branch_name = urlutils.basename(self.location)
3619
self.branch_name = urlutils.unescape(branch_name)
3621
def _get_matching_sections(self):
3622
"""Get all sections matching ``location``."""
3623
# We slightly diverge from LocalConfig here by allowing the no-name
3624
# section as the most generic one and the lower priority.
3625
no_name_section = None
3627
# Filter out the no_name_section so _iter_for_location_by_parts can be
3628
# used (it assumes all sections have a name).
3629
for _, section in self.store.get_sections():
3630
if section.id is None:
3631
no_name_section = section
3633
all_sections.append(section)
3634
# Unfortunately _iter_for_location_by_parts deals with section names so
3635
# we have to resync.
3636
filtered_sections = _iter_for_location_by_parts(
3637
[s.id for s in all_sections], self.location)
3638
iter_all_sections = iter(all_sections)
3639
matching_sections = []
3640
if no_name_section is not None:
3641
matching_sections.append(
3642
(0, LocationSection(no_name_section, self.location)))
3643
for section_id, extra_path, length in filtered_sections:
3644
# a section id is unique for a given store so it's safe to take the
3645
# first matching section while iterating. Also, all filtered
3646
# sections are part of 'all_sections' and will always be found
3649
section = next(iter_all_sections)
3650
if section_id == section.id:
3651
section = LocationSection(section, extra_path,
3653
matching_sections.append((length, section))
3655
return matching_sections
3657
def get_sections(self):
3658
# Override the default implementation as we want to change the order
3659
# We want the longest (aka more specific) locations first
3660
sections = sorted(self._get_matching_sections(),
3661
key=lambda match: (match[0], match[1].id),
3663
# Sections mentioning 'ignore_parents' restrict the selection
3664
for _, section in sections:
3665
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3666
ignore = section.get('ignore_parents', None)
3667
if ignore is not None:
3668
ignore = ui.bool_from_string(ignore)
3671
# Finally, we have a valid section
3672
yield self.store, section
3675
# FIXME: _shared_stores should be an attribute of a library state once a
3676
# library_state object is always available.
3678
_shared_stores_at_exit_installed = False
3680
class Stack(object):
3681
"""A stack of configurations where an option can be defined"""
3683
def __init__(self, sections_def, store=None, mutable_section_id=None):
3684
"""Creates a stack of sections with an optional store for changes.
3686
:param sections_def: A list of Section or callables that returns an
3687
iterable of Section. This defines the Sections for the Stack and
3688
can be called repeatedly if needed.
3690
:param store: The optional Store where modifications will be
3691
recorded. If none is specified, no modifications can be done.
3693
:param mutable_section_id: The id of the MutableSection where changes
3694
are recorded. This requires the ``store`` parameter to be
3697
self.sections_def = sections_def
3699
self.mutable_section_id = mutable_section_id
3701
def iter_sections(self):
3702
"""Iterate all the defined sections."""
3703
# Ensuring lazy loading is achieved by delaying section matching (which
3704
# implies querying the persistent storage) until it can't be avoided
3705
# anymore by using callables to describe (possibly empty) section
3707
for sections in self.sections_def:
3708
for store, section in sections():
3709
yield store, section
3711
def get(self, name, expand=True, convert=True):
3712
"""Return the *first* option value found in the sections.
3714
This is where we guarantee that sections coming from Store are loaded
3715
lazily: the loading is delayed until we need to either check that an
3716
option exists or get its value, which in turn may require to discover
3717
in which sections it can be defined. Both of these (section and option
3718
existence) require loading the store (even partially).
3720
:param name: The queried option.
3722
:param expand: Whether options references should be expanded.
3724
:param convert: Whether the option value should be converted from
3725
unicode (do nothing for non-registered options).
3727
:returns: The value of the option.
3729
# FIXME: No caching of options nor sections yet -- vila 20110503
3731
found_store = None # Where the option value has been found
3732
# If the option is registered, it may provide additional info about
3735
opt = option_registry.get(name)
3740
def expand_and_convert(val):
3741
# This may need to be called in different contexts if the value is
3742
# None or ends up being None during expansion or conversion.
3745
if isinstance(val, string_types):
3746
val = self._expand_options_in_string(val)
3748
trace.warning('Cannot expand "%s":'
3749
' %s does not support option expansion'
3750
% (name, type(val)))
3752
val = found_store.unquote(val)
3754
val = opt.convert_from_unicode(found_store, val)
3757
# First of all, check if the environment can override the configuration
3759
if opt is not None and opt.override_from_env:
3760
value = opt.get_override()
3761
value = expand_and_convert(value)
3763
for store, section in self.iter_sections():
3764
value = section.get(name)
3765
if value is not None:
3768
value = expand_and_convert(value)
3769
if opt is not None and value is None:
3770
# If the option is registered, it may provide a default value
3771
value = opt.get_default()
3772
value = expand_and_convert(value)
3773
for hook in ConfigHooks['get']:
3774
hook(self, name, value)
3777
def expand_options(self, string, env=None):
3778
"""Expand option references in the string in the configuration context.
3780
:param string: The string containing option(s) to expand.
3782
:param env: An option dict defining additional configuration options or
3783
overriding existing ones.
3785
:returns: The expanded string.
3787
return self._expand_options_in_string(string, env)
3789
def _expand_options_in_string(self, string, env=None, _refs=None):
3790
"""Expand options in the string in the configuration context.
3792
:param string: The string to be expanded.
3794
:param env: An option dict defining additional configuration options or
3795
overriding existing ones.
3797
:param _refs: Private list (FIFO) containing the options being expanded
3800
:returns: The expanded string.
3803
# Not much to expand there
3806
# What references are currently resolved (to detect loops)
3809
# We need to iterate until no more refs appear ({{foo}} will need two
3810
# iterations for example).
3815
for is_ref, chunk in iter_option_refs(result):
3817
chunks.append(chunk)
3822
raise OptionExpansionLoop(string, _refs)
3824
value = self._expand_option(name, env, _refs)
3826
raise ExpandingUnknownOption(name, string)
3827
chunks.append(value)
3829
result = ''.join(chunks)
3832
def _expand_option(self, name, env, _refs):
3833
if env is not None and name in env:
3834
# Special case, values provided in env takes precedence over
3838
value = self.get(name, expand=False, convert=False)
3839
value = self._expand_options_in_string(value, env, _refs)
3842
def _get_mutable_section(self):
3843
"""Get the MutableSection for the Stack.
3845
This is where we guarantee that the mutable section is lazily loaded:
3846
this means we won't load the corresponding store before setting a value
3847
or deleting an option. In practice the store will often be loaded but
3848
this helps catching some programming errors.
3851
section = store.get_mutable_section(self.mutable_section_id)
3852
return store, section
3854
def set(self, name, value):
3855
"""Set a new value for the option."""
3856
store, section = self._get_mutable_section()
3857
section.set(name, store.quote(value))
3858
for hook in ConfigHooks['set']:
3859
hook(self, name, value)
3861
def remove(self, name):
3862
"""Remove an existing option."""
3863
_, section = self._get_mutable_section()
3864
section.remove(name)
3865
for hook in ConfigHooks['remove']:
3869
# Mostly for debugging use
3870
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3872
def _get_overrides(self):
3873
# FIXME: Hack around library_state.initialize never called
3874
if breezy.global_state is not None:
3875
return breezy.global_state.cmdline_overrides.get_sections()
3878
def get_shared_store(self, store, state=None):
3879
"""Get a known shared store.
3881
Store urls uniquely identify them and are used to ensure a single copy
3882
is shared across all users.
3884
:param store: The store known to the caller.
3886
:param state: The library state where the known stores are kept.
3888
:returns: The store received if it's not a known one, an already known
3892
state = breezy.global_state
3894
global _shared_stores_at_exit_installed
3895
stores = _shared_stores
3896
def save_config_changes():
3897
for k, store in stores.items():
3898
store.save_changes()
3899
if not _shared_stores_at_exit_installed:
3900
# FIXME: Ugly hack waiting for library_state to always be
3901
# available. -- vila 20120731
3903
atexit.register(save_config_changes)
3904
_shared_stores_at_exit_installed = True
3906
stores = state.config_stores
3907
url = store.external_url()
3915
class MemoryStack(Stack):
3916
"""A configuration stack defined from a string.
3918
This is mainly intended for tests and requires no disk resources.
3921
def __init__(self, content=None):
3922
"""Create an in-memory stack from a given content.
3924
It uses a single store based on configobj and support reading and
3927
:param content: The initial content of the store. If None, the store is
3928
not loaded and ``_load_from_string`` can and should be used if
3931
store = IniFileStore()
3932
if content is not None:
3933
store._load_from_string(content)
3934
super(MemoryStack, self).__init__(
3935
[store.get_sections], store)
3938
class _CompatibleStack(Stack):
3939
"""Place holder for compatibility with previous design.
3941
This is intended to ease the transition from the Config-based design to the
3942
Stack-based design and should not be used nor relied upon by plugins.
3944
One assumption made here is that the daughter classes will all use Stores
3945
derived from LockableIniFileStore).
3947
It implements set() and remove () by re-loading the store before applying
3948
the modification and saving it.
3950
The long term plan being to implement a single write by store to save
3951
all modifications, this class should not be used in the interim.
3954
def set(self, name, value):
3957
super(_CompatibleStack, self).set(name, value)
3958
# Force a write to persistent storage
3961
def remove(self, name):
3964
super(_CompatibleStack, self).remove(name)
3965
# Force a write to persistent storage
3969
class GlobalStack(Stack):
3970
"""Global options only stack.
3972
The following sections are queried:
3974
* command-line overrides,
3976
* the 'DEFAULT' section in bazaar.conf
3978
This stack will use the ``DEFAULT`` section in bazaar.conf as its
3983
gstore = self.get_shared_store(GlobalStore())
3984
super(GlobalStack, self).__init__(
3985
[self._get_overrides,
3986
NameMatcher(gstore, 'DEFAULT').get_sections],
3987
gstore, mutable_section_id='DEFAULT')
3990
class LocationStack(Stack):
3991
"""Per-location options falling back to global options stack.
3994
The following sections are queried:
3996
* command-line overrides,
3998
* the sections matching ``location`` in ``locations.conf``, the order being
3999
defined by the number of path components in the section glob, higher
4000
numbers first (from most specific section to most generic).
4002
* the 'DEFAULT' section in bazaar.conf
4004
This stack will use the ``location`` section in locations.conf as its
4008
def __init__(self, location):
4009
"""Make a new stack for a location and global configuration.
4011
:param location: A URL prefix to """
4012
lstore = self.get_shared_store(LocationStore())
4013
if location.startswith('file://'):
4014
location = urlutils.local_path_from_url(location)
4015
gstore = self.get_shared_store(GlobalStore())
4016
super(LocationStack, self).__init__(
4017
[self._get_overrides,
4018
LocationMatcher(lstore, location).get_sections,
4019
NameMatcher(gstore, 'DEFAULT').get_sections],
4020
lstore, mutable_section_id=location)
4023
class BranchStack(Stack):
4024
"""Per-location options falling back to branch then global options stack.
4026
The following sections are queried:
4028
* command-line overrides,
4030
* the sections matching ``location`` in ``locations.conf``, the order being
4031
defined by the number of path components in the section glob, higher
4032
numbers first (from most specific section to most generic),
4034
* the no-name section in branch.conf,
4036
* the ``DEFAULT`` section in ``bazaar.conf``.
4038
This stack will use the no-name section in ``branch.conf`` as its
4042
def __init__(self, branch):
4043
lstore = self.get_shared_store(LocationStore())
4044
bstore = branch._get_config_store()
4045
gstore = self.get_shared_store(GlobalStore())
4046
super(BranchStack, self).__init__(
4047
[self._get_overrides,
4048
LocationMatcher(lstore, branch.base).get_sections,
4049
NameMatcher(bstore, None).get_sections,
4050
NameMatcher(gstore, 'DEFAULT').get_sections],
4052
self.branch = branch
4054
def lock_write(self, token=None):
4055
return self.branch.lock_write(token)
4058
return self.branch.unlock()
4061
def set(self, name, value):
4062
super(BranchStack, self).set(name, value)
4063
# Unlocking the branch will trigger a store.save_changes() so the last
4064
# unlock saves all the changes.
4067
def remove(self, name):
4068
super(BranchStack, self).remove(name)
4069
# Unlocking the branch will trigger a store.save_changes() so the last
4070
# unlock saves all the changes.
4073
class RemoteControlStack(Stack):
4074
"""Remote control-only options stack."""
4076
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
4077
# with the stack used for remote bzr dirs. RemoteControlStack only uses
4078
# control.conf and is used only for stack options.
4080
def __init__(self, bzrdir):
4081
cstore = bzrdir._get_config_store()
4082
super(RemoteControlStack, self).__init__(
4083
[NameMatcher(cstore, None).get_sections],
4085
self.controldir = bzrdir
4088
class BranchOnlyStack(Stack):
4089
"""Branch-only options stack."""
4091
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
4092
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
4093
# -- vila 2011-12-16
4095
def __init__(self, branch):
4096
bstore = branch._get_config_store()
4097
super(BranchOnlyStack, self).__init__(
4098
[NameMatcher(bstore, None).get_sections],
4100
self.branch = branch
4102
def lock_write(self, token=None):
4103
return self.branch.lock_write(token)
4106
return self.branch.unlock()
4109
def set(self, name, value):
4110
super(BranchOnlyStack, self).set(name, value)
4111
# Force a write to persistent storage
4112
self.store.save_changes()
4115
def remove(self, name):
4116
super(BranchOnlyStack, self).remove(name)
4117
# Force a write to persistent storage
4118
self.store.save_changes()
4121
class cmd_config(commands.Command):
4122
__doc__ = """Display, set or remove a configuration option.
4124
Display the active value for option NAME.
4126
If --all is specified, NAME is interpreted as a regular expression and all
4127
matching options are displayed mentioning their scope and without resolving
4128
option references in the value). The active value that bzr will take into
4129
account is the first one displayed for each option.
4131
If NAME is not given, --all .* is implied (all options are displayed for the
4134
Setting a value is achieved by using NAME=value without spaces. The value
4135
is set in the most relevant scope and can be checked by displaying the
4138
Removing a value is achieved by using --remove NAME.
4141
takes_args = ['name?']
4145
# FIXME: This should be a registry option so that plugins can register
4146
# their own config files (or not) and will also address
4147
# http://pad.lv/788991 -- vila 20101115
4148
commands.Option('scope', help='Reduce the scope to the specified'
4149
' configuration file.',
4151
commands.Option('all',
4152
help='Display all the defined values for the matching options.',
4154
commands.Option('remove', help='Remove the option from'
4155
' the configuration file.'),
4158
_see_also = ['configuration']
4160
@commands.display_command
4161
def run(self, name=None, all=False, directory=None, scope=None,
4163
if directory is None:
4165
directory = directory_service.directories.dereference(directory)
4166
directory = urlutils.normalize_url(directory)
4168
raise errors.BzrError(
4169
'--all and --remove are mutually exclusive.')
4171
# Delete the option in the given scope
4172
self._remove_config_option(name, directory, scope)
4174
# Defaults to all options
4175
self._show_matching_options('.*', directory, scope)
4178
name, value = name.split('=', 1)
4180
# Display the option(s) value(s)
4182
self._show_matching_options(name, directory, scope)
4184
self._show_value(name, directory, scope)
4187
raise errors.BzrError(
4188
'Only one option can be set.')
4189
# Set the option value
4190
self._set_config_option(name, value, directory, scope)
4192
def _get_stack(self, directory, scope=None, write_access=False):
4193
"""Get the configuration stack specified by ``directory`` and ``scope``.
4195
:param directory: Where the configurations are derived from.
4197
:param scope: A specific config to start from.
4199
:param write_access: Whether a write access to the stack will be
4202
# FIXME: scope should allow access to plugin-specific stacks (even
4203
# reduced to the plugin-specific store), related to
4204
# http://pad.lv/788991 -- vila 2011-11-15
4205
if scope is not None:
4206
if scope == 'breezy':
4207
return GlobalStack()
4208
elif scope == 'locations':
4209
return LocationStack(directory)
4210
elif scope == 'branch':
4212
controldir.ControlDir.open_containing_tree_or_branch(
4215
self.add_cleanup(br.lock_write().unlock)
4216
return br.get_config_stack()
4217
raise NoSuchConfig(scope)
4221
controldir.ControlDir.open_containing_tree_or_branch(
4224
self.add_cleanup(br.lock_write().unlock)
4225
return br.get_config_stack()
4226
except errors.NotBranchError:
4227
return LocationStack(directory)
4229
def _quote_multiline(self, value):
4231
value = '"""' + value + '"""'
4234
def _show_value(self, name, directory, scope):
4235
conf = self._get_stack(directory, scope)
4236
value = conf.get(name, expand=True, convert=False)
4237
if value is not None:
4238
# Quote the value appropriately
4239
value = self._quote_multiline(value)
4240
self.outf.write('%s\n' % (value,))
4242
raise NoSuchConfigOption(name)
4244
def _show_matching_options(self, name, directory, scope):
4245
name = lazy_regex.lazy_compile(name)
4246
# We want any error in the regexp to be raised *now* so we need to
4247
# avoid the delay introduced by the lazy regexp. But, we still do
4248
# want the nicer errors raised by lazy_regex.
4249
name._compile_and_collapse()
4252
conf = self._get_stack(directory, scope)
4253
for store, section in conf.iter_sections():
4254
for oname in section.iter_option_names():
4255
if name.search(oname):
4256
if cur_store_id != store.id:
4257
# Explain where the options are defined
4258
self.outf.write('%s:\n' % (store.id,))
4259
cur_store_id = store.id
4261
if (section.id is not None and cur_section != section.id):
4262
# Display the section id as it appears in the store
4263
# (None doesn't appear by definition)
4264
self.outf.write(' [%s]\n' % (section.id,))
4265
cur_section = section.id
4266
value = section.get(oname, expand=False)
4267
# Quote the value appropriately
4268
value = self._quote_multiline(value)
4269
self.outf.write(' %s = %s\n' % (oname, value))
4271
def _set_config_option(self, name, value, directory, scope):
4272
conf = self._get_stack(directory, scope, write_access=True)
4273
conf.set(name, value)
4274
# Explicitly save the changes
4275
conf.store.save_changes()
4277
def _remove_config_option(self, name, directory, scope):
4279
raise errors.BzrCommandError(
4280
'--remove expects an option to remove.')
4281
conf = self._get_stack(directory, scope, write_access=True)
4284
# Explicitly save the changes
4285
conf.store.save_changes()
4287
raise NoSuchConfigOption(name)
4292
# We need adapters that can build a Store or a Stack in a test context. Test
4293
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4294
# themselves. The builder will receive a test instance and should return a
4295
# ready-to-use store or stack. Plugins that define new store/stacks can also
4296
# register themselves here to be tested against the tests defined in
4297
# breezy.tests.test_config. Note that the builder can be called multiple times
4298
# for the same test.
4300
# The registered object should be a callable receiving a test instance
4301
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4303
test_store_builder_registry = registry.Registry()
4305
# The registered object should be a callable receiving a test instance
4306
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4308
test_stack_builder_registry = registry.Registry()