1508
2264
configobj[name] = value
1510
2266
configobj.setdefault(section, {})[name] = value
2267
for hook in OldConfigHooks['set']:
2268
hook(self, name, value)
2269
self._set_configobj(configobj)
2271
def remove_option(self, option_name, section_name=None):
2272
configobj = self._get_configobj()
2273
if section_name is None:
2274
del configobj[option_name]
2276
del configobj[section_name][option_name]
2277
for hook in OldConfigHooks['remove']:
2278
hook(self, option_name)
1511
2279
self._set_configobj(configobj)
1513
2281
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2283
f = BytesIO(self._transport.get_bytes(self._filename))
2284
for hook in OldConfigHooks['load']:
1516
2287
except errors.NoSuchFile:
2289
except errors.PermissionDenied as e:
2290
trace.warning("Permission denied while trying to open "
2291
"configuration file %s.", urlutils.unescape_for_display(
2292
urlutils.join(self._transport.base, self._filename), "utf-8"))
2295
def _external_url(self):
2296
return urlutils.join(self._transport.external_url(), self._filename)
1519
2298
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2299
f = self._get_config_file()
2302
conf = ConfigObj(f, encoding='utf-8')
2303
except configobj.ConfigObjError as e:
2304
raise ParseConfigError(e.errors, self._external_url())
2305
except UnicodeDecodeError:
2306
raise ConfigContentError(self._external_url())
1522
2311
def _set_configobj(self, configobj):
1523
out_file = StringIO()
2312
out_file = BytesIO()
1524
2313
configobj.write(out_file)
1525
2314
out_file.seek(0)
1526
2315
self._transport.put_file(self._filename, out_file)
2316
for hook in OldConfigHooks['save']:
2320
class Option(object):
2321
"""An option definition.
2323
The option *values* are stored in config files and found in sections.
2325
Here we define various properties about the option itself, its default
2326
value, how to convert it from stores, what to do when invalid values are
2327
encoutered, in which config files it can be stored.
2330
def __init__(self, name, override_from_env=None,
2331
default=None, default_from_env=None,
2332
help=None, from_unicode=None, invalid=None, unquote=True):
2333
"""Build an option definition.
2335
:param name: the name used to refer to the option.
2337
:param override_from_env: A list of environment variables which can
2338
provide override any configuration setting.
2340
:param default: the default value to use when none exist in the config
2341
stores. This is either a string that ``from_unicode`` will convert
2342
into the proper type, a callable returning a unicode string so that
2343
``from_unicode`` can be used on the return value, or a python
2344
object that can be stringified (so only the empty list is supported
2347
:param default_from_env: A list of environment variables which can
2348
provide a default value. 'default' will be used only if none of the
2349
variables specified here are set in the environment.
2351
:param help: a doc string to explain the option to the user.
2353
:param from_unicode: a callable to convert the unicode string
2354
representing the option value in a store or its default value.
2356
:param invalid: the action to be taken when an invalid value is
2357
encountered in a store. This is called only when from_unicode is
2358
invoked to convert a string and returns None or raise ValueError or
2359
TypeError. Accepted values are: None (ignore invalid values),
2360
'warning' (emit a warning), 'error' (emit an error message and
2363
:param unquote: should the unicode value be unquoted before conversion.
2364
This should be used only when the store providing the values cannot
2365
safely unquote them (see http://pad.lv/906897). It is provided so
2366
daughter classes can handle the quoting themselves.
2368
if override_from_env is None:
2369
override_from_env = []
2370
if default_from_env is None:
2371
default_from_env = []
2373
self.override_from_env = override_from_env
2374
# Convert the default value to a unicode string so all values are
2375
# strings internally before conversion (via from_unicode) is attempted.
2378
elif isinstance(default, list):
2379
# Only the empty list is supported
2381
raise AssertionError(
2382
'Only empty lists are supported as default values')
2384
elif isinstance(default, (binary_type, text_type, bool, int, float)):
2385
# Rely on python to convert strings, booleans and integers
2386
self.default = u'%s' % (default,)
2387
elif callable(default):
2388
self.default = default
2390
# other python objects are not expected
2391
raise AssertionError('%r is not supported as a default value'
2393
self.default_from_env = default_from_env
2395
self.from_unicode = from_unicode
2396
self.unquote = unquote
2397
if invalid and invalid not in ('warning', 'error'):
2398
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2399
self.invalid = invalid
2405
def convert_from_unicode(self, store, unicode_value):
2406
if self.unquote and store is not None and unicode_value is not None:
2407
unicode_value = store.unquote(unicode_value)
2408
if self.from_unicode is None or unicode_value is None:
2409
# Don't convert or nothing to convert
2410
return unicode_value
2412
converted = self.from_unicode(unicode_value)
2413
except (ValueError, TypeError):
2414
# Invalid values are ignored
2416
if converted is None and self.invalid is not None:
2417
# The conversion failed
2418
if self.invalid == 'warning':
2419
trace.warning('Value "%s" is not valid for "%s"',
2420
unicode_value, self.name)
2421
elif self.invalid == 'error':
2422
raise ConfigOptionValueError(self.name, unicode_value)
2425
def get_override(self):
2427
for var in self.override_from_env:
2429
# If the env variable is defined, its value takes precedence
2430
value = os.environ[var]
2432
value = value.decode(osutils.get_user_encoding())
2438
def get_default(self):
2440
for var in self.default_from_env:
2442
# If the env variable is defined, its value is the default one
2443
value = os.environ[var]
2445
value = value.decode(osutils.get_user_encoding())
2450
# Otherwise, fallback to the value defined at registration
2451
if callable(self.default):
2452
value = self.default()
2453
if not isinstance(value, text_type):
2454
raise AssertionError(
2455
"Callable default value for '%s' should be unicode"
2458
value = self.default
2461
def get_help_topic(self):
2464
def get_help_text(self, additional_see_also=None, plain=True):
2466
from breezy import help_topics
2467
result += help_topics._format_see_also(additional_see_also)
2469
result = help_topics.help_as_plain_text(result)
2473
# Predefined converters to get proper values from store
2475
def bool_from_store(unicode_str):
2476
return ui.bool_from_string(unicode_str)
2479
def int_from_store(unicode_str):
2480
return int(unicode_str)
2483
_unit_suffixes = dict(K=10**3, M=10**6, G=10**9)
2486
def int_SI_from_store(unicode_str):
2487
"""Convert a human readable size in SI units, e.g 10MB into an integer.
2489
Accepted suffixes are K,M,G. It is case-insensitive and may be followed
2490
by a trailing b (i.e. Kb, MB). This is intended to be practical and not
2493
:return Integer, expanded to its base-10 value if a proper SI unit is
2494
found, None otherwise.
2496
regexp = "^(\\d+)(([" + ''.join(_unit_suffixes) + "])b?)?$"
2497
p = re.compile(regexp, re.IGNORECASE)
2498
m = p.match(unicode_str)
2501
val, _, unit = m.groups()
2505
coeff = _unit_suffixes[unit.upper()]
2508
gettext('{0} is not an SI unit.').format(unit))
2513
def float_from_store(unicode_str):
2514
return float(unicode_str)
2517
# Use an empty dict to initialize an empty configobj avoiding all parsing and
2519
_list_converter_config = configobj.ConfigObj(
2520
{}, encoding='utf-8', list_values=True, interpolation=False)
2523
class ListOption(Option):
2525
def __init__(self, name, default=None, default_from_env=None,
2526
help=None, invalid=None):
2527
"""A list Option definition.
2529
This overrides the base class so the conversion from a unicode string
2530
can take quoting into account.
2532
super(ListOption, self).__init__(
2533
name, default=default, default_from_env=default_from_env,
2534
from_unicode=self.from_unicode, help=help,
2535
invalid=invalid, unquote=False)
2537
def from_unicode(self, unicode_str):
2538
if not isinstance(unicode_str, string_types):
2540
# Now inject our string directly as unicode. All callers got their
2541
# value from configobj, so values that need to be quoted are already
2543
_list_converter_config.reset()
2544
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2545
maybe_list = _list_converter_config['list']
2546
if isinstance(maybe_list, string_types):
2548
# A single value, most probably the user forgot (or didn't care
2549
# to add) the final ','
2552
# The empty string, convert to empty list
2555
# We rely on ConfigObj providing us with a list already
2560
class RegistryOption(Option):
2561
"""Option for a choice from a registry."""
2563
def __init__(self, name, registry, default_from_env=None,
2564
help=None, invalid=None):
2565
"""A registry based Option definition.
2567
This overrides the base class so the conversion from a unicode string
2568
can take quoting into account.
2570
super(RegistryOption, self).__init__(
2571
name, default=lambda: registry.default_key,
2572
default_from_env=default_from_env,
2573
from_unicode=self.from_unicode, help=help,
2574
invalid=invalid, unquote=False)
2575
self.registry = registry
2577
def from_unicode(self, unicode_str):
2578
if not isinstance(unicode_str, string_types):
2581
return self.registry.get(unicode_str)
2584
"Invalid value %s for %s."
2585
"See help for a list of possible values." % (unicode_str,
2590
ret = [self._help, "\n\nThe following values are supported:\n"]
2591
for key in self.registry.keys():
2592
ret.append(" %s - %s\n" % (key, self.registry.get_help(key)))
2596
_option_ref_re = lazy_regex.lazy_compile('({[^\\d\\W](?:\\.\\w|-\\w|\\w)*})')
2597
"""Describes an expandable option reference.
2599
We want to match the most embedded reference first.
2601
I.e. for '{{foo}}' we will get '{foo}',
2602
for '{bar{baz}}' we will get '{baz}'
2606
def iter_option_refs(string):
2607
# Split isolate refs so every other chunk is a ref
2609
for chunk in _option_ref_re.split(string):
2614
class OptionRegistry(registry.Registry):
2615
"""Register config options by their name.
2617
This overrides ``registry.Registry`` to simplify registration by acquiring
2618
some information from the option object itself.
2621
def _check_option_name(self, option_name):
2622
"""Ensures an option name is valid.
2624
:param option_name: The name to validate.
2626
if _option_ref_re.match('{%s}' % option_name) is None:
2627
raise IllegalOptionName(option_name)
2629
def register(self, option):
2630
"""Register a new option to its name.
2632
:param option: The option to register. Its name is used as the key.
2634
self._check_option_name(option.name)
2635
super(OptionRegistry, self).register(option.name, option,
2638
def register_lazy(self, key, module_name, member_name):
2639
"""Register a new option to be loaded on request.
2641
:param key: the key to request the option later. Since the registration
2642
is lazy, it should be provided and match the option name.
2644
:param module_name: the python path to the module. Such as 'os.path'.
2646
:param member_name: the member of the module to return. If empty or
2647
None, get() will return the module itself.
2649
self._check_option_name(key)
2650
super(OptionRegistry, self).register_lazy(key,
2651
module_name, member_name)
2653
def get_help(self, key=None):
2654
"""Get the help text associated with the given key"""
2655
option = self.get(key)
2656
the_help = option.help
2657
if callable(the_help):
2658
return the_help(self, key)
2662
option_registry = OptionRegistry()
2665
# Registered options in lexicographical order
2667
option_registry.register(
2668
Option('append_revisions_only',
2669
default=None, from_unicode=bool_from_store, invalid='warning',
2671
Whether to only append revisions to the mainline.
2673
If this is set to true, then it is not possible to change the
2674
existing mainline of the branch.
2676
option_registry.register(
2677
ListOption('acceptable_keys',
2680
List of GPG key patterns which are acceptable for verification.
2682
option_registry.register(
2683
Option('add.maximum_file_size',
2684
default=u'20MB', from_unicode=int_SI_from_store,
2686
Size above which files should be added manually.
2688
Files below this size are added automatically when using ``bzr add`` without
2691
A negative value means disable the size check.
2693
option_registry.register(
2695
default=None, from_unicode=bool_from_store,
2697
Is the branch bound to ``bound_location``.
2699
If set to "True", the branch should act as a checkout, and push each commit to
2700
the bound_location. This option is normally set by ``bind``/``unbind``.
2702
See also: bound_location.
2704
option_registry.register(
2705
Option('bound_location',
2708
The location that commits should go to when acting as a checkout.
2710
This option is normally set by ``bind``.
2714
option_registry.register(
2715
Option('branch.fetch_tags', default=False, from_unicode=bool_from_store,
2717
Whether revisions associated with tags should be fetched.
2719
option_registry.register_lazy(
2720
'transform.orphan_policy', 'breezy.transform', 'opt_transform_orphan')
2721
option_registry.register(
2722
Option('bzr.workingtree.worth_saving_limit', default=10,
2723
from_unicode=int_from_store, invalid='warning',
2725
How many changes before saving the dirstate.
2727
-1 means that we will never rewrite the dirstate file for only
2728
stat-cache changes. Regardless of this setting, we will always rewrite
2729
the dirstate file if a file is added/removed/renamed/etc. This flag only
2730
affects the behavior of updating the dirstate file after we notice that
2731
a file has been touched.
2733
option_registry.register(
2734
Option('bugtracker', default=None,
2736
Default bug tracker to use.
2738
This bug tracker will be used for example when marking bugs
2739
as fixed using ``bzr commit --fixes``, if no explicit
2740
bug tracker was specified.
2742
option_registry.register(
2743
Option('check_signatures', default=CHECK_IF_POSSIBLE,
2744
from_unicode=signature_policy_from_unicode,
2746
GPG checking policy.
2748
Possible values: require, ignore, check-available (default)
2750
this option will control whether bzr will require good gpg
2751
signatures, ignore them, or check them if they are
2754
option_registry.register(
2755
Option('child_submit_format',
2756
help='''The preferred format of submissions to this branch.'''))
2757
option_registry.register(
2758
Option('child_submit_to',
2759
help='''Where submissions to this branch are mailed to.'''))
2760
option_registry.register(
2761
Option('create_signatures', default=SIGN_WHEN_REQUIRED,
2762
from_unicode=signing_policy_from_unicode,
2766
Possible values: always, never, when-required (default)
2768
This option controls whether bzr will always create
2769
gpg signatures or not on commits.
2771
option_registry.register(
2772
Option('dirstate.fdatasync', default=True,
2773
from_unicode=bool_from_store,
2775
Flush dirstate changes onto physical disk?
2777
If true (default), working tree metadata changes are flushed through the
2778
OS buffers to physical disk. This is somewhat slower, but means data
2779
should not be lost if the machine crashes. See also repository.fdatasync.
2781
option_registry.register(
2782
ListOption('debug_flags', default=[],
2783
help='Debug flags to activate.'))
2784
option_registry.register(
2785
Option('default_format', default='2a',
2786
help='Format used when creating branches.'))
2787
option_registry.register(
2788
Option('dpush_strict', default=None,
2789
from_unicode=bool_from_store,
2791
The default value for ``dpush --strict``.
2793
If present, defines the ``--strict`` option default value for checking
2794
uncommitted changes before pushing into a different VCS without any
2795
custom bzr metadata.
2797
option_registry.register(
2799
help='The command called to launch an editor to enter a message.'))
2800
option_registry.register(
2801
Option('email', override_from_env=['BRZ_EMAIL'], default=default_email,
2802
help='The users identity'))
2803
option_registry.register(
2804
Option('gpg_signing_key',
2807
GPG key to use for signing.
2809
This defaults to the first key associated with the users email.
2811
option_registry.register(
2813
help='Language to translate messages into.'))
2814
option_registry.register(
2815
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2817
Steal locks that appears to be dead.
2819
If set to True, bzr will check if a lock is supposed to be held by an
2820
active process from the same user on the same machine. If the user and
2821
machine match, but no process with the given PID is active, then bzr
2822
will automatically break the stale lock, and create a new lock for
2824
Otherwise, bzr will prompt as normal to break the lock.
2826
option_registry.register(
2827
Option('log_format', default='long',
2829
Log format to use when displaying revisions.
2831
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2832
may be provided by plugins.
2834
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2836
option_registry.register(
2837
Option('output_encoding',
2838
help='Unicode encoding for output'
2839
' (terminal encoding if not specified).'))
2840
option_registry.register(
2841
Option('parent_location',
2844
The location of the default branch for pull or merge.
2846
This option is normally set when creating a branch, the first ``pull`` or by
2847
``pull --remember``.
2849
option_registry.register(
2850
Option('post_commit', default=None,
2852
Post commit functions.
2854
An ordered list of python functions to call, separated by spaces.
2856
Each function takes branch, rev_id as parameters.
2858
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2860
option_registry.register(
2861
Option('public_branch',
2864
A publically-accessible version of this branch.
2866
This implies that the branch setting this option is not publically-accessible.
2867
Used and set by ``bzr send``.
2869
option_registry.register(
2870
Option('push_location',
2873
The location of the default branch for push.
2875
This option is normally set by the first ``push`` or ``push --remember``.
2877
option_registry.register(
2878
Option('push_strict', default=None,
2879
from_unicode=bool_from_store,
2881
The default value for ``push --strict``.
2883
If present, defines the ``--strict`` option default value for checking
2884
uncommitted changes before sending a merge directive.
2886
option_registry.register(
2887
Option('repository.fdatasync', default=True,
2888
from_unicode=bool_from_store,
2890
Flush repository changes onto physical disk?
2892
If true (default), repository changes are flushed through the OS buffers
2893
to physical disk. This is somewhat slower, but means data should not be
2894
lost if the machine crashes. See also dirstate.fdatasync.
2896
option_registry.register_lazy('smtp_server',
2897
'breezy.smtp_connection', 'smtp_server')
2898
option_registry.register_lazy('smtp_password',
2899
'breezy.smtp_connection', 'smtp_password')
2900
option_registry.register_lazy('smtp_username',
2901
'breezy.smtp_connection', 'smtp_username')
2902
option_registry.register(
2903
Option('selftest.timeout',
2905
from_unicode=int_from_store,
2906
help='Abort selftest if one test takes longer than this many seconds',
2909
option_registry.register(
2910
Option('send_strict', default=None,
2911
from_unicode=bool_from_store,
2913
The default value for ``send --strict``.
2915
If present, defines the ``--strict`` option default value for checking
2916
uncommitted changes before sending a bundle.
2919
option_registry.register(
2920
Option('serve.client_timeout',
2921
default=300.0, from_unicode=float_from_store,
2922
help="If we wait for a new request from a client for more than"
2923
" X seconds, consider the client idle, and hangup."))
2924
option_registry.register(
2925
Option('stacked_on_location',
2927
help="""The location where this branch is stacked on."""))
2928
option_registry.register(
2929
Option('submit_branch',
2932
The branch you intend to submit your current work to.
2934
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2935
by the ``submit:`` revision spec.
2937
option_registry.register(
2939
help='''Where submissions from this branch are mailed to.'''))
2940
option_registry.register(
2941
ListOption('suppress_warnings',
2943
help="List of warning classes to suppress."))
2944
option_registry.register(
2945
Option('validate_signatures_in_log', default=False,
2946
from_unicode=bool_from_store, invalid='warning',
2947
help='''Whether to validate signatures in brz log.'''))
2948
option_registry.register_lazy('ssl.ca_certs',
2949
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_ca_certs')
2951
option_registry.register_lazy('ssl.cert_reqs',
2952
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_cert_reqs')
2955
class Section(object):
2956
"""A section defines a dict of option name => value.
2958
This is merely a read-only dict which can add some knowledge about the
2959
options. It is *not* a python dict object though and doesn't try to mimic
2963
def __init__(self, section_id, options):
2964
self.id = section_id
2965
# We re-use the dict-like object received
2966
self.options = options
2968
def get(self, name, default=None, expand=True):
2969
return self.options.get(name, default)
2971
def iter_option_names(self):
2972
for k in self.options.keys():
2976
# Mostly for debugging use
2977
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2980
_NewlyCreatedOption = object()
2981
"""Was the option created during the MutableSection lifetime"""
2982
_DeletedOption = object()
2983
"""Was the option deleted during the MutableSection lifetime"""
2986
class MutableSection(Section):
2987
"""A section allowing changes and keeping track of the original values."""
2989
def __init__(self, section_id, options):
2990
super(MutableSection, self).__init__(section_id, options)
2991
self.reset_changes()
2993
def set(self, name, value):
2994
if name not in self.options:
2995
# This is a new option
2996
self.orig[name] = _NewlyCreatedOption
2997
elif name not in self.orig:
2998
self.orig[name] = self.get(name, None)
2999
self.options[name] = value
3001
def remove(self, name):
3002
if name not in self.orig and name in self.options:
3003
self.orig[name] = self.get(name, None)
3004
del self.options[name]
3006
def reset_changes(self):
3009
def apply_changes(self, dirty, store):
3010
"""Apply option value changes.
3012
``self`` has been reloaded from the persistent storage. ``dirty``
3013
contains the changes made since the previous loading.
3015
:param dirty: the mutable section containing the changes.
3017
:param store: the store containing the section
3019
for k, expected in dirty.orig.items():
3020
actual = dirty.get(k, _DeletedOption)
3021
reloaded = self.get(k, _NewlyCreatedOption)
3022
if actual is _DeletedOption:
3023
if k in self.options:
3027
# Report concurrent updates in an ad-hoc way. This should only
3028
# occurs when different processes try to update the same option
3029
# which is not supported (as in: the config framework is not meant
3030
# to be used as a sharing mechanism).
3031
if expected != reloaded:
3032
if actual is _DeletedOption:
3033
actual = '<DELETED>'
3034
if reloaded is _NewlyCreatedOption:
3035
reloaded = '<CREATED>'
3036
if expected is _NewlyCreatedOption:
3037
expected = '<CREATED>'
3038
# Someone changed the value since we get it from the persistent
3040
trace.warning(gettext(
3041
"Option {0} in section {1} of {2} was changed"
3042
" from {3} to {4}. The {5} value will be saved.".format(
3043
k, self.id, store.external_url(), expected,
3045
# No need to keep track of these changes
3046
self.reset_changes()
3049
class Store(object):
3050
"""Abstract interface to persistent storage for configuration options."""
3052
readonly_section_class = Section
3053
mutable_section_class = MutableSection
3056
# Which sections need to be saved (by section id). We use a dict here
3057
# so the dirty sections can be shared by multiple callers.
3058
self.dirty_sections = {}
3060
def is_loaded(self):
3061
"""Returns True if the Store has been loaded.
3063
This is used to implement lazy loading and ensure the persistent
3064
storage is queried only when needed.
3066
raise NotImplementedError(self.is_loaded)
3069
"""Loads the Store from persistent storage."""
3070
raise NotImplementedError(self.load)
3072
def _load_from_string(self, bytes):
3073
"""Create a store from a string in configobj syntax.
3075
:param bytes: A string representing the file content.
3077
raise NotImplementedError(self._load_from_string)
3080
"""Unloads the Store.
3082
This should make is_loaded() return False. This is used when the caller
3083
knows that the persistent storage has changed or may have change since
3086
raise NotImplementedError(self.unload)
3088
def quote(self, value):
3089
"""Quote a configuration option value for storing purposes.
3091
This allows Stacks to present values as they will be stored.
3095
def unquote(self, value):
3096
"""Unquote a configuration option value into unicode.
3098
The received value is quoted as stored.
3103
"""Saves the Store to persistent storage."""
3104
raise NotImplementedError(self.save)
3106
def _need_saving(self):
3107
for s in self.dirty_sections.values():
3109
# At least one dirty section contains a modification
3113
def apply_changes(self, dirty_sections):
3114
"""Apply changes from dirty sections while checking for coherency.
3116
The Store content is discarded and reloaded from persistent storage to
3117
acquire up-to-date values.
3119
Dirty sections are MutableSection which kept track of the value they
3120
are expected to update.
3122
# We need an up-to-date version from the persistent storage, unload the
3123
# store. The reload will occur when needed (triggered by the first
3124
# get_mutable_section() call below.
3126
# Apply the changes from the preserved dirty sections
3127
for section_id, dirty in dirty_sections.items():
3128
clean = self.get_mutable_section(section_id)
3129
clean.apply_changes(dirty, self)
3130
# Everything is clean now
3131
self.dirty_sections = {}
3133
def save_changes(self):
3134
"""Saves the Store to persistent storage if changes occurred.
3136
Apply the changes recorded in the mutable sections to a store content
3137
refreshed from persistent storage.
3139
raise NotImplementedError(self.save_changes)
3141
def external_url(self):
3142
raise NotImplementedError(self.external_url)
3144
def get_sections(self):
3145
"""Returns an ordered iterable of existing sections.
3147
:returns: An iterable of (store, section).
3149
raise NotImplementedError(self.get_sections)
3151
def get_mutable_section(self, section_id=None):
3152
"""Returns the specified mutable section.
3154
:param section_id: The section identifier
3156
raise NotImplementedError(self.get_mutable_section)
3159
# Mostly for debugging use
3160
return "<config.%s(%s)>" % (self.__class__.__name__,
3161
self.external_url())
3164
class CommandLineStore(Store):
3165
"A store to carry command line overrides for the config options."""
3167
def __init__(self, opts=None):
3168
super(CommandLineStore, self).__init__()
3175
# The dict should be cleared but not replaced so it can be shared.
3176
self.options.clear()
3178
def _from_cmdline(self, overrides):
3179
# Reset before accepting new definitions
3181
for over in overrides:
3183
name, value = over.split('=', 1)
3185
raise errors.BzrCommandError(
3186
gettext("Invalid '%s', should be of the form 'name=value'")
3188
self.options[name] = value
3190
def external_url(self):
3191
# Not an url but it makes debugging easier and is never needed
3195
def get_sections(self):
3196
yield self, self.readonly_section_class(None, self.options)
3199
class IniFileStore(Store):
3200
"""A config Store using ConfigObj for storage.
3202
:ivar _config_obj: Private member to hold the ConfigObj instance used to
3203
serialize/deserialize the config file.
3207
"""A config Store using ConfigObj for storage.
3209
super(IniFileStore, self).__init__()
3210
self._config_obj = None
3212
def is_loaded(self):
3213
return self._config_obj != None
3216
self._config_obj = None
3217
self.dirty_sections = {}
3219
def _load_content(self):
3220
"""Load the config file bytes.
3222
This should be provided by subclasses
3224
:return: Byte string
3226
raise NotImplementedError(self._load_content)
3228
def _save_content(self, content):
3229
"""Save the config file bytes.
3231
This should be provided by subclasses
3233
:param content: Config file bytes to write
3235
raise NotImplementedError(self._save_content)
3238
"""Load the store from the associated file."""
3239
if self.is_loaded():
3241
content = self._load_content()
3242
self._load_from_string(content)
3243
for hook in ConfigHooks['load']:
3246
def _load_from_string(self, bytes):
3247
"""Create a config store from a string.
3249
:param bytes: A string representing the file content.
3251
if self.is_loaded():
3252
raise AssertionError('Already loaded: %r' % (self._config_obj,))
3253
co_input = BytesIO(bytes)
3255
# The config files are always stored utf8-encoded
3256
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3258
except configobj.ConfigObjError as e:
3259
self._config_obj = None
3260
raise ParseConfigError(e.errors, self.external_url())
3261
except UnicodeDecodeError:
3262
raise ConfigContentError(self.external_url())
3264
def save_changes(self):
3265
if not self.is_loaded():
3268
if not self._need_saving():
3270
# Preserve the current version
3271
dirty_sections = self.dirty_sections.copy()
3272
self.apply_changes(dirty_sections)
3273
# Save to the persistent storage
3277
if not self.is_loaded():
3281
self._config_obj.write(out)
3282
self._save_content(out.getvalue())
3283
for hook in ConfigHooks['save']:
3286
def get_sections(self):
3287
"""Get the configobj section in the file order.
3289
:returns: An iterable of (store, section).
3291
# We need a loaded store
3294
except (errors.NoSuchFile, errors.PermissionDenied):
3295
# If the file can't be read, there is no sections
3297
cobj = self._config_obj
3299
yield self, self.readonly_section_class(None, cobj)
3300
for section_name in cobj.sections:
3302
self.readonly_section_class(section_name,
3303
cobj[section_name]))
3305
def get_mutable_section(self, section_id=None):
3306
# We need a loaded store
3309
except errors.NoSuchFile:
3310
# The file doesn't exist, let's pretend it was empty
3311
self._load_from_string(b'')
3312
if section_id in self.dirty_sections:
3313
# We already created a mutable section for this id
3314
return self.dirty_sections[section_id]
3315
if section_id is None:
3316
section = self._config_obj
3318
section = self._config_obj.setdefault(section_id, {})
3319
mutable_section = self.mutable_section_class(section_id, section)
3320
# All mutable sections can become dirty
3321
self.dirty_sections[section_id] = mutable_section
3322
return mutable_section
3324
def quote(self, value):
3326
# configobj conflates automagical list values and quoting
3327
self._config_obj.list_values = True
3328
return self._config_obj._quote(value)
3330
self._config_obj.list_values = False
3332
def unquote(self, value):
3333
if value and isinstance(value, string_types):
3334
# _unquote doesn't handle None nor empty strings nor anything that
3335
# is not a string, really.
3336
value = self._config_obj._unquote(value)
3339
def external_url(self):
3340
# Since an IniFileStore can be used without a file (at least in tests),
3341
# it's better to provide something than raising a NotImplementedError.
3342
# All daughter classes are supposed to provide an implementation
3344
return 'In-Process Store, no URL'
3347
class TransportIniFileStore(IniFileStore):
3348
"""IniFileStore that loads files from a transport.
3350
:ivar transport: The transport object where the config file is located.
3352
:ivar file_name: The config file basename in the transport directory.
3355
def __init__(self, transport, file_name):
3356
"""A Store using a ini file on a Transport
3358
:param transport: The transport object where the config file is located.
3359
:param file_name: The config file basename in the transport directory.
3361
super(TransportIniFileStore, self).__init__()
3362
self.transport = transport
3363
self.file_name = file_name
3365
def _load_content(self):
3367
return self.transport.get_bytes(self.file_name)
3368
except errors.PermissionDenied:
3369
trace.warning("Permission denied while trying to load "
3370
"configuration store %s.", self.external_url())
3373
def _save_content(self, content):
3374
self.transport.put_bytes(self.file_name, content)
3376
def external_url(self):
3377
# FIXME: external_url should really accepts an optional relpath
3378
# parameter (bug #750169) :-/ -- vila 2011-04-04
3379
# The following will do in the interim but maybe we don't want to
3380
# expose a path here but rather a config ID and its associated
3381
# object </hand wawe>.
3382
return urlutils.join(
3383
self.transport.external_url(), urlutils.escape(self.file_name))
3386
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3387
# unlockable stores for use with objects that can already ensure the locking
3388
# (think branches). If different stores (not based on ConfigObj) are created,
3389
# they may face the same issue.
3392
class LockableIniFileStore(TransportIniFileStore):
3393
"""A ConfigObjStore using locks on save to ensure store integrity."""
3395
def __init__(self, transport, file_name, lock_dir_name=None):
3396
"""A config Store using ConfigObj for storage.
3398
:param transport: The transport object where the config file is located.
3400
:param file_name: The config file basename in the transport directory.
3402
if lock_dir_name is None:
3403
lock_dir_name = 'lock'
3404
self.lock_dir_name = lock_dir_name
3405
super(LockableIniFileStore, self).__init__(transport, file_name)
3406
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3408
def lock_write(self, token=None):
3409
"""Takes a write lock in the directory containing the config file.
3411
If the directory doesn't exist it is created.
3413
# FIXME: This doesn't check the ownership of the created directories as
3414
# ensure_config_dir_exists does. It should if the transport is local
3415
# -- vila 2011-04-06
3416
self.transport.create_prefix()
3417
token = self._lock.lock_write(token)
3418
return lock.LogicalLockResult(self.unlock, token)
3423
def break_lock(self):
3424
self._lock.break_lock()
3427
with self.lock_write():
3428
# We need to be able to override the undecorated implementation
3429
self.save_without_locking()
3431
def save_without_locking(self):
3432
super(LockableIniFileStore, self).save()
3435
# FIXME: global, breezy, shouldn't that be 'user' instead or even
3436
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
3437
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
3439
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
3440
# functions or a registry will make it easier and clearer for tests, focusing
3441
# on the relevant parts of the API that needs testing -- vila 20110503 (based
3442
# on a poolie's remark)
3443
class GlobalStore(LockableIniFileStore):
3444
"""A config store for global options.
3446
There is a single GlobalStore for a given process.
3449
def __init__(self, possible_transports=None):
3450
(path, kind) = _config_dir()
3451
t = transport.get_transport_from_path(
3452
path, possible_transports=possible_transports)
3453
filename = {'bazaar': 'bazaar.conf', 'breezy': 'breezy.conf'}[kind]
3454
super(GlobalStore, self).__init__(t, filename)
3458
class LocationStore(LockableIniFileStore):
3459
"""A config store for options specific to a location.
3461
There is a single LocationStore for a given process.
3464
def __init__(self, possible_transports=None):
3465
t = transport.get_transport_from_path(
3466
config_dir(), possible_transports=possible_transports)
3467
super(LocationStore, self).__init__(t, 'locations.conf')
3468
self.id = 'locations'
3471
class BranchStore(TransportIniFileStore):
3472
"""A config store for branch options.
3474
There is a single BranchStore for a given branch.
3477
def __init__(self, branch):
3478
super(BranchStore, self).__init__(branch.control_transport,
3480
self.branch = branch
3484
class ControlStore(LockableIniFileStore):
3486
def __init__(self, bzrdir):
3487
super(ControlStore, self).__init__(bzrdir.transport,
3489
lock_dir_name='branch_lock')
3493
class SectionMatcher(object):
3494
"""Select sections into a given Store.
3496
This is intended to be used to postpone getting an iterable of sections
3500
def __init__(self, store):
3503
def get_sections(self):
3504
# This is where we require loading the store so we can see all defined
3506
sections = self.store.get_sections()
3507
# Walk the revisions in the order provided
3508
for store, s in sections:
3512
def match(self, section):
3513
"""Does the proposed section match.
3515
:param section: A Section object.
3517
:returns: True if the section matches, False otherwise.
3519
raise NotImplementedError(self.match)
3522
class NameMatcher(SectionMatcher):
3524
def __init__(self, store, section_id):
3525
super(NameMatcher, self).__init__(store)
3526
self.section_id = section_id
3528
def match(self, section):
3529
return section.id == self.section_id
3532
class LocationSection(Section):
3534
def __init__(self, section, extra_path, branch_name=None):
3535
super(LocationSection, self).__init__(section.id, section.options)
3536
self.extra_path = extra_path
3537
if branch_name is None:
3539
self.locals = {'relpath': extra_path,
3540
'basename': urlutils.basename(extra_path),
3541
'branchname': branch_name}
3543
def get(self, name, default=None, expand=True):
3544
value = super(LocationSection, self).get(name, default)
3545
if value is not None and expand:
3546
policy_name = self.get(name + ':policy', None)
3547
policy = _policy_value.get(policy_name, POLICY_NONE)
3548
if policy == POLICY_APPENDPATH:
3549
value = urlutils.join(value, self.extra_path)
3550
# expand section local options right now (since POLICY_APPENDPATH
3551
# will never add options references, it's ok to expand after it).
3553
for is_ref, chunk in iter_option_refs(value):
3555
chunks.append(chunk)
3558
if ref in self.locals:
3559
chunks.append(self.locals[ref])
3561
chunks.append(chunk)
3562
value = ''.join(chunks)
3566
class StartingPathMatcher(SectionMatcher):
3567
"""Select sections for a given location respecting the Store order."""
3569
# FIXME: Both local paths and urls can be used for section names as well as
3570
# ``location`` to stay consistent with ``LocationMatcher`` which itself
3571
# inherited the fuzziness from the previous ``LocationConfig``
3572
# implementation. We probably need to revisit which encoding is allowed for
3573
# both ``location`` and section names and how we normalize
3574
# them. http://pad.lv/85479, http://pad.lv/437009 and http://359320 are
3575
# related too. -- vila 2012-01-04
3577
def __init__(self, store, location):
3578
super(StartingPathMatcher, self).__init__(store)
3579
if location.startswith('file://'):
3580
location = urlutils.local_path_from_url(location)
3581
self.location = location
3583
def get_sections(self):
3584
"""Get all sections matching ``location`` in the store.
3586
The most generic sections are described first in the store, then more
3587
specific ones can be provided for reduced scopes.
3589
The returned section are therefore returned in the reversed order so
3590
the most specific ones can be found first.
3592
location_parts = self.location.rstrip('/').split('/')
3594
# Later sections are more specific, they should be returned first
3595
for _, section in reversed(list(store.get_sections())):
3596
if section.id is None:
3597
# The no-name section is always included if present
3598
yield store, LocationSection(section, self.location)
3600
section_path = section.id
3601
if section_path.startswith('file://'):
3602
# the location is already a local path or URL, convert the
3603
# section id to the same format
3604
section_path = urlutils.local_path_from_url(section_path)
3605
if (self.location.startswith(section_path) or
3606
fnmatch.fnmatch(self.location, section_path)):
3607
section_parts = section_path.rstrip('/').split('/')
3608
extra_path = '/'.join(location_parts[len(section_parts):])
3609
yield store, LocationSection(section, extra_path)
3612
class LocationMatcher(SectionMatcher):
3614
def __init__(self, store, location):
3615
super(LocationMatcher, self).__init__(store)
3616
url, params = urlutils.split_segment_parameters(location)
3617
if location.startswith('file://'):
3618
location = urlutils.local_path_from_url(location)
3619
self.location = location
3620
branch_name = params.get('branch')
3621
if branch_name is None:
3622
self.branch_name = urlutils.basename(self.location)
3624
self.branch_name = urlutils.unescape(branch_name)
3626
def _get_matching_sections(self):
3627
"""Get all sections matching ``location``."""
3628
# We slightly diverge from LocalConfig here by allowing the no-name
3629
# section as the most generic one and the lower priority.
3630
no_name_section = None
3632
# Filter out the no_name_section so _iter_for_location_by_parts can be
3633
# used (it assumes all sections have a name).
3634
for _, section in self.store.get_sections():
3635
if section.id is None:
3636
no_name_section = section
3638
all_sections.append(section)
3639
# Unfortunately _iter_for_location_by_parts deals with section names so
3640
# we have to resync.
3641
filtered_sections = _iter_for_location_by_parts(
3642
[s.id for s in all_sections], self.location)
3643
iter_all_sections = iter(all_sections)
3644
matching_sections = []
3645
if no_name_section is not None:
3646
matching_sections.append(
3647
(0, LocationSection(no_name_section, self.location)))
3648
for section_id, extra_path, length in filtered_sections:
3649
# a section id is unique for a given store so it's safe to take the
3650
# first matching section while iterating. Also, all filtered
3651
# sections are part of 'all_sections' and will always be found
3654
section = next(iter_all_sections)
3655
if section_id == section.id:
3656
section = LocationSection(section, extra_path,
3658
matching_sections.append((length, section))
3660
return matching_sections
3662
def get_sections(self):
3663
# Override the default implementation as we want to change the order
3664
# We want the longest (aka more specific) locations first
3665
sections = sorted(self._get_matching_sections(),
3666
key=lambda match: (match[0], match[1].id),
3668
# Sections mentioning 'ignore_parents' restrict the selection
3669
for _, section in sections:
3670
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3671
ignore = section.get('ignore_parents', None)
3672
if ignore is not None:
3673
ignore = ui.bool_from_string(ignore)
3676
# Finally, we have a valid section
3677
yield self.store, section
3680
# FIXME: _shared_stores should be an attribute of a library state once a
3681
# library_state object is always available.
3683
_shared_stores_at_exit_installed = False
3686
class Stack(object):
3687
"""A stack of configurations where an option can be defined"""
3689
def __init__(self, sections_def, store=None, mutable_section_id=None):
3690
"""Creates a stack of sections with an optional store for changes.
3692
:param sections_def: A list of Section or callables that returns an
3693
iterable of Section. This defines the Sections for the Stack and
3694
can be called repeatedly if needed.
3696
:param store: The optional Store where modifications will be
3697
recorded. If none is specified, no modifications can be done.
3699
:param mutable_section_id: The id of the MutableSection where changes
3700
are recorded. This requires the ``store`` parameter to be
3703
self.sections_def = sections_def
3705
self.mutable_section_id = mutable_section_id
3707
def iter_sections(self):
3708
"""Iterate all the defined sections."""
3709
# Ensuring lazy loading is achieved by delaying section matching (which
3710
# implies querying the persistent storage) until it can't be avoided
3711
# anymore by using callables to describe (possibly empty) section
3713
for sections in self.sections_def:
3714
for store, section in sections():
3715
yield store, section
3717
def get(self, name, expand=True, convert=True):
3718
"""Return the *first* option value found in the sections.
3720
This is where we guarantee that sections coming from Store are loaded
3721
lazily: the loading is delayed until we need to either check that an
3722
option exists or get its value, which in turn may require to discover
3723
in which sections it can be defined. Both of these (section and option
3724
existence) require loading the store (even partially).
3726
:param name: The queried option.
3728
:param expand: Whether options references should be expanded.
3730
:param convert: Whether the option value should be converted from
3731
unicode (do nothing for non-registered options).
3733
:returns: The value of the option.
3735
# FIXME: No caching of options nor sections yet -- vila 20110503
3737
found_store = None # Where the option value has been found
3738
# If the option is registered, it may provide additional info about
3741
opt = option_registry.get(name)
3746
def expand_and_convert(val):
3747
# This may need to be called in different contexts if the value is
3748
# None or ends up being None during expansion or conversion.
3751
if isinstance(val, string_types):
3752
val = self._expand_options_in_string(val)
3754
trace.warning('Cannot expand "%s":'
3755
' %s does not support option expansion'
3756
% (name, type(val)))
3758
val = found_store.unquote(val)
3760
val = opt.convert_from_unicode(found_store, val)
3763
# First of all, check if the environment can override the configuration
3765
if opt is not None and opt.override_from_env:
3766
value = opt.get_override()
3767
value = expand_and_convert(value)
3769
for store, section in self.iter_sections():
3770
value = section.get(name)
3771
if value is not None:
3774
value = expand_and_convert(value)
3775
if opt is not None and value is None:
3776
# If the option is registered, it may provide a default value
3777
value = opt.get_default()
3778
value = expand_and_convert(value)
3779
for hook in ConfigHooks['get']:
3780
hook(self, name, value)
3783
def expand_options(self, string, env=None):
3784
"""Expand option references in the string in the configuration context.
3786
:param string: The string containing option(s) to expand.
3788
:param env: An option dict defining additional configuration options or
3789
overriding existing ones.
3791
:returns: The expanded string.
3793
return self._expand_options_in_string(string, env)
3795
def _expand_options_in_string(self, string, env=None, _refs=None):
3796
"""Expand options in the string in the configuration context.
3798
:param string: The string to be expanded.
3800
:param env: An option dict defining additional configuration options or
3801
overriding existing ones.
3803
:param _refs: Private list (FIFO) containing the options being expanded
3806
:returns: The expanded string.
3809
# Not much to expand there
3812
# What references are currently resolved (to detect loops)
3815
# We need to iterate until no more refs appear ({{foo}} will need two
3816
# iterations for example).
3821
for is_ref, chunk in iter_option_refs(result):
3823
chunks.append(chunk)
3828
raise OptionExpansionLoop(string, _refs)
3830
value = self._expand_option(name, env, _refs)
3832
raise ExpandingUnknownOption(name, string)
3833
chunks.append(value)
3835
result = ''.join(chunks)
3838
def _expand_option(self, name, env, _refs):
3839
if env is not None and name in env:
3840
# Special case, values provided in env takes precedence over
3844
value = self.get(name, expand=False, convert=False)
3845
value = self._expand_options_in_string(value, env, _refs)
3848
def _get_mutable_section(self):
3849
"""Get the MutableSection for the Stack.
3851
This is where we guarantee that the mutable section is lazily loaded:
3852
this means we won't load the corresponding store before setting a value
3853
or deleting an option. In practice the store will often be loaded but
3854
this helps catching some programming errors.
3857
section = store.get_mutable_section(self.mutable_section_id)
3858
return store, section
3860
def set(self, name, value):
3861
"""Set a new value for the option."""
3862
store, section = self._get_mutable_section()
3863
section.set(name, store.quote(value))
3864
for hook in ConfigHooks['set']:
3865
hook(self, name, value)
3867
def remove(self, name):
3868
"""Remove an existing option."""
3869
_, section = self._get_mutable_section()
3870
section.remove(name)
3871
for hook in ConfigHooks['remove']:
3875
# Mostly for debugging use
3876
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3878
def _get_overrides(self):
3879
if breezy._global_state is not None:
3880
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
3881
return breezy._global_state.cmdline_overrides.get_sections()
3884
def get_shared_store(self, store, state=None):
3885
"""Get a known shared store.
3887
Store urls uniquely identify them and are used to ensure a single copy
3888
is shared across all users.
3890
:param store: The store known to the caller.
3892
:param state: The library state where the known stores are kept.
3894
:returns: The store received if it's not a known one, an already known
3898
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
3899
state = breezy._global_state
3901
global _shared_stores_at_exit_installed
3902
stores = _shared_stores
3904
def save_config_changes():
3905
for k, store in stores.items():
3906
store.save_changes()
3907
if not _shared_stores_at_exit_installed:
3908
# FIXME: Ugly hack waiting for library_state to always be
3909
# available. -- vila 20120731
3911
atexit.register(save_config_changes)
3912
_shared_stores_at_exit_installed = True
3914
stores = state.config_stores
3915
url = store.external_url()
3923
class MemoryStack(Stack):
3924
"""A configuration stack defined from a string.
3926
This is mainly intended for tests and requires no disk resources.
3929
def __init__(self, content=None):
3930
"""Create an in-memory stack from a given content.
3932
It uses a single store based on configobj and support reading and
3935
:param content: The initial content of the store. If None, the store is
3936
not loaded and ``_load_from_string`` can and should be used if
3939
store = IniFileStore()
3940
if content is not None:
3941
store._load_from_string(content)
3942
super(MemoryStack, self).__init__(
3943
[store.get_sections], store)
3946
class _CompatibleStack(Stack):
3947
"""Place holder for compatibility with previous design.
3949
This is intended to ease the transition from the Config-based design to the
3950
Stack-based design and should not be used nor relied upon by plugins.
3952
One assumption made here is that the daughter classes will all use Stores
3953
derived from LockableIniFileStore).
3955
It implements set() and remove () by re-loading the store before applying
3956
the modification and saving it.
3958
The long term plan being to implement a single write by store to save
3959
all modifications, this class should not be used in the interim.
3962
def set(self, name, value):
3965
super(_CompatibleStack, self).set(name, value)
3966
# Force a write to persistent storage
3969
def remove(self, name):
3972
super(_CompatibleStack, self).remove(name)
3973
# Force a write to persistent storage
3977
class GlobalStack(Stack):
3978
"""Global options only stack.
3980
The following sections are queried:
3982
* command-line overrides,
3984
* the 'DEFAULT' section in bazaar.conf
3986
This stack will use the ``DEFAULT`` section in bazaar.conf as its
3991
gstore = self.get_shared_store(GlobalStore())
3992
super(GlobalStack, self).__init__(
3993
[self._get_overrides,
3994
NameMatcher(gstore, 'DEFAULT').get_sections],
3995
gstore, mutable_section_id='DEFAULT')
3998
class LocationStack(Stack):
3999
"""Per-location options falling back to global options stack.
4002
The following sections are queried:
4004
* command-line overrides,
4006
* the sections matching ``location`` in ``locations.conf``, the order being
4007
defined by the number of path components in the section glob, higher
4008
numbers first (from most specific section to most generic).
4010
* the 'DEFAULT' section in bazaar.conf
4012
This stack will use the ``location`` section in locations.conf as its
4016
def __init__(self, location):
4017
"""Make a new stack for a location and global configuration.
4019
:param location: A URL prefix to """
4020
lstore = self.get_shared_store(LocationStore())
4021
if location.startswith('file://'):
4022
location = urlutils.local_path_from_url(location)
4023
gstore = self.get_shared_store(GlobalStore())
4024
super(LocationStack, self).__init__(
4025
[self._get_overrides,
4026
LocationMatcher(lstore, location).get_sections,
4027
NameMatcher(gstore, 'DEFAULT').get_sections],
4028
lstore, mutable_section_id=location)
4031
class BranchStack(Stack):
4032
"""Per-location options falling back to branch then global options stack.
4034
The following sections are queried:
4036
* command-line overrides,
4038
* the sections matching ``location`` in ``locations.conf``, the order being
4039
defined by the number of path components in the section glob, higher
4040
numbers first (from most specific section to most generic),
4042
* the no-name section in branch.conf,
4044
* the ``DEFAULT`` section in ``bazaar.conf``.
4046
This stack will use the no-name section in ``branch.conf`` as its
4050
def __init__(self, branch):
4051
lstore = self.get_shared_store(LocationStore())
4052
bstore = branch._get_config_store()
4053
gstore = self.get_shared_store(GlobalStore())
4054
super(BranchStack, self).__init__(
4055
[self._get_overrides,
4056
LocationMatcher(lstore, branch.base).get_sections,
4057
NameMatcher(bstore, None).get_sections,
4058
NameMatcher(gstore, 'DEFAULT').get_sections],
4060
self.branch = branch
4062
def lock_write(self, token=None):
4063
return self.branch.lock_write(token)
4066
return self.branch.unlock()
4068
def set(self, name, value):
4069
with self.lock_write():
4070
super(BranchStack, self).set(name, value)
4071
# Unlocking the branch will trigger a store.save_changes() so the
4072
# last unlock saves all the changes.
4074
def remove(self, name):
4075
with self.lock_write():
4076
super(BranchStack, self).remove(name)
4077
# Unlocking the branch will trigger a store.save_changes() so the
4078
# last unlock saves all the changes.
4081
class RemoteControlStack(Stack):
4082
"""Remote control-only options stack."""
4084
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
4085
# with the stack used for remote bzr dirs. RemoteControlStack only uses
4086
# control.conf and is used only for stack options.
4088
def __init__(self, bzrdir):
4089
cstore = bzrdir._get_config_store()
4090
super(RemoteControlStack, self).__init__(
4091
[NameMatcher(cstore, None).get_sections],
4093
self.controldir = bzrdir
4096
class BranchOnlyStack(Stack):
4097
"""Branch-only options stack."""
4099
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
4100
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
4101
# -- vila 2011-12-16
4103
def __init__(self, branch):
4104
bstore = branch._get_config_store()
4105
super(BranchOnlyStack, self).__init__(
4106
[NameMatcher(bstore, None).get_sections],
4108
self.branch = branch
4110
def lock_write(self, token=None):
4111
return self.branch.lock_write(token)
4114
return self.branch.unlock()
4116
def set(self, name, value):
4117
with self.lock_write():
4118
super(BranchOnlyStack, self).set(name, value)
4119
# Force a write to persistent storage
4120
self.store.save_changes()
4122
def remove(self, name):
4123
with self.lock_write():
4124
super(BranchOnlyStack, self).remove(name)
4125
# Force a write to persistent storage
4126
self.store.save_changes()
4129
class cmd_config(commands.Command):
4130
__doc__ = """Display, set or remove a configuration option.
4132
Display the active value for option NAME.
4134
If --all is specified, NAME is interpreted as a regular expression and all
4135
matching options are displayed mentioning their scope and without resolving
4136
option references in the value). The active value that bzr will take into
4137
account is the first one displayed for each option.
4139
If NAME is not given, --all .* is implied (all options are displayed for the
4142
Setting a value is achieved by using NAME=value without spaces. The value
4143
is set in the most relevant scope and can be checked by displaying the
4146
Removing a value is achieved by using --remove NAME.
4149
takes_args = ['name?']
4153
# FIXME: This should be a registry option so that plugins can register
4154
# their own config files (or not) and will also address
4155
# http://pad.lv/788991 -- vila 20101115
4156
commands.Option('scope', help='Reduce the scope to the specified'
4157
' configuration file.',
4159
commands.Option('all',
4160
help='Display all the defined values for the matching options.',
4162
commands.Option('remove', help='Remove the option from'
4163
' the configuration file.'),
4166
_see_also = ['configuration']
4168
@commands.display_command
4169
def run(self, name=None, all=False, directory=None, scope=None,
4171
if directory is None:
4173
directory = directory_service.directories.dereference(directory)
4174
directory = urlutils.normalize_url(directory)
4176
raise errors.BzrError(
4177
'--all and --remove are mutually exclusive.')
4179
# Delete the option in the given scope
4180
self._remove_config_option(name, directory, scope)
4182
# Defaults to all options
4183
self._show_matching_options('.*', directory, scope)
4186
name, value = name.split('=', 1)
4188
# Display the option(s) value(s)
4190
self._show_matching_options(name, directory, scope)
4192
self._show_value(name, directory, scope)
4195
raise errors.BzrError(
4196
'Only one option can be set.')
4197
# Set the option value
4198
self._set_config_option(name, value, directory, scope)
4200
def _get_stack(self, directory, scope=None, write_access=False):
4201
"""Get the configuration stack specified by ``directory`` and ``scope``.
4203
:param directory: Where the configurations are derived from.
4205
:param scope: A specific config to start from.
4207
:param write_access: Whether a write access to the stack will be
4210
# FIXME: scope should allow access to plugin-specific stacks (even
4211
# reduced to the plugin-specific store), related to
4212
# http://pad.lv/788991 -- vila 2011-11-15
4213
if scope is not None:
4214
if scope == 'breezy':
4215
return GlobalStack()
4216
elif scope == 'locations':
4217
return LocationStack(directory)
4218
elif scope == 'branch':
4220
controldir.ControlDir.open_containing_tree_or_branch(
4223
self.add_cleanup(br.lock_write().unlock)
4224
return br.get_config_stack()
4225
raise NoSuchConfig(scope)
4229
controldir.ControlDir.open_containing_tree_or_branch(
4232
self.add_cleanup(br.lock_write().unlock)
4233
return br.get_config_stack()
4234
except errors.NotBranchError:
4235
return LocationStack(directory)
4237
def _quote_multiline(self, value):
4239
value = '"""' + value + '"""'
4242
def _show_value(self, name, directory, scope):
4243
conf = self._get_stack(directory, scope)
4244
value = conf.get(name, expand=True, convert=False)
4245
if value is not None:
4246
# Quote the value appropriately
4247
value = self._quote_multiline(value)
4248
self.outf.write('%s\n' % (value,))
4250
raise NoSuchConfigOption(name)
4252
def _show_matching_options(self, name, directory, scope):
4253
name = lazy_regex.lazy_compile(name)
4254
# We want any error in the regexp to be raised *now* so we need to
4255
# avoid the delay introduced by the lazy regexp. But, we still do
4256
# want the nicer errors raised by lazy_regex.
4257
name._compile_and_collapse()
4260
conf = self._get_stack(directory, scope)
4261
for store, section in conf.iter_sections():
4262
for oname in section.iter_option_names():
4263
if name.search(oname):
4264
if cur_store_id != store.id:
4265
# Explain where the options are defined
4266
self.outf.write('%s:\n' % (store.id,))
4267
cur_store_id = store.id
4269
if (section.id is not None and cur_section != section.id):
4270
# Display the section id as it appears in the store
4271
# (None doesn't appear by definition)
4272
self.outf.write(' [%s]\n' % (section.id,))
4273
cur_section = section.id
4274
value = section.get(oname, expand=False)
4275
# Quote the value appropriately
4276
value = self._quote_multiline(value)
4277
self.outf.write(' %s = %s\n' % (oname, value))
4279
def _set_config_option(self, name, value, directory, scope):
4280
conf = self._get_stack(directory, scope, write_access=True)
4281
conf.set(name, value)
4282
# Explicitly save the changes
4283
conf.store.save_changes()
4285
def _remove_config_option(self, name, directory, scope):
4287
raise errors.BzrCommandError(
4288
'--remove expects an option to remove.')
4289
conf = self._get_stack(directory, scope, write_access=True)
4292
# Explicitly save the changes
4293
conf.store.save_changes()
4295
raise NoSuchConfigOption(name)
4300
# We need adapters that can build a Store or a Stack in a test context. Test
4301
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4302
# themselves. The builder will receive a test instance and should return a
4303
# ready-to-use store or stack. Plugins that define new store/stacks can also
4304
# register themselves here to be tested against the tests defined in
4305
# breezy.tests.test_config. Note that the builder can be called multiple times
4306
# for the same test.
4308
# The registered object should be a callable receiving a test instance
4309
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4311
test_store_builder_registry = registry.Registry()
4313
# The registered object should be a callable receiving a test instance
4314
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4316
test_stack_builder_registry = registry.Registry()