1508
2258
configobj[name] = value
1510
2260
configobj.setdefault(section, {})[name] = value
2261
for hook in OldConfigHooks['set']:
2262
hook(self, name, value)
2263
self._set_configobj(configobj)
2265
def remove_option(self, option_name, section_name=None):
2266
configobj = self._get_configobj()
2267
if section_name is None:
2268
del configobj[option_name]
2270
del configobj[section_name][option_name]
2271
for hook in OldConfigHooks['remove']:
2272
hook(self, option_name)
1511
2273
self._set_configobj(configobj)
1513
2275
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2277
f = BytesIO(self._transport.get_bytes(self._filename))
2278
for hook in OldConfigHooks['load']:
1516
2281
except errors.NoSuchFile:
2283
except errors.PermissionDenied as e:
2284
trace.warning("Permission denied while trying to open "
2285
"configuration file %s.", urlutils.unescape_for_display(
2286
urlutils.join(self._transport.base, self._filename), "utf-8"))
2289
def _external_url(self):
2290
return urlutils.join(self._transport.external_url(), self._filename)
1519
2292
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2293
f = self._get_config_file()
2296
conf = ConfigObj(f, encoding='utf-8')
2297
except configobj.ConfigObjError as e:
2298
raise ParseConfigError(e.errors, self._external_url())
2299
except UnicodeDecodeError:
2300
raise ConfigContentError(self._external_url())
1522
2305
def _set_configobj(self, configobj):
1523
out_file = StringIO()
2306
out_file = BytesIO()
1524
2307
configobj.write(out_file)
1525
2308
out_file.seek(0)
1526
2309
self._transport.put_file(self._filename, out_file)
2310
for hook in OldConfigHooks['save']:
2314
class Option(object):
2315
"""An option definition.
2317
The option *values* are stored in config files and found in sections.
2319
Here we define various properties about the option itself, its default
2320
value, how to convert it from stores, what to do when invalid values are
2321
encoutered, in which config files it can be stored.
2324
def __init__(self, name, override_from_env=None,
2325
default=None, default_from_env=None,
2326
help=None, from_unicode=None, invalid=None, unquote=True):
2327
"""Build an option definition.
2329
:param name: the name used to refer to the option.
2331
:param override_from_env: A list of environment variables which can
2332
provide override any configuration setting.
2334
:param default: the default value to use when none exist in the config
2335
stores. This is either a string that ``from_unicode`` will convert
2336
into the proper type, a callable returning a unicode string so that
2337
``from_unicode`` can be used on the return value, or a python
2338
object that can be stringified (so only the empty list is supported
2341
:param default_from_env: A list of environment variables which can
2342
provide a default value. 'default' will be used only if none of the
2343
variables specified here are set in the environment.
2345
:param help: a doc string to explain the option to the user.
2347
:param from_unicode: a callable to convert the unicode string
2348
representing the option value in a store or its default value.
2350
:param invalid: the action to be taken when an invalid value is
2351
encountered in a store. This is called only when from_unicode is
2352
invoked to convert a string and returns None or raise ValueError or
2353
TypeError. Accepted values are: None (ignore invalid values),
2354
'warning' (emit a warning), 'error' (emit an error message and
2357
:param unquote: should the unicode value be unquoted before conversion.
2358
This should be used only when the store providing the values cannot
2359
safely unquote them (see http://pad.lv/906897). It is provided so
2360
daughter classes can handle the quoting themselves.
2362
if override_from_env is None:
2363
override_from_env = []
2364
if default_from_env is None:
2365
default_from_env = []
2367
self.override_from_env = override_from_env
2368
# Convert the default value to a unicode string so all values are
2369
# strings internally before conversion (via from_unicode) is attempted.
2372
elif isinstance(default, list):
2373
# Only the empty list is supported
2375
raise AssertionError(
2376
'Only empty lists are supported as default values')
2378
elif isinstance(default, (binary_type, text_type, bool, int, float)):
2379
# Rely on python to convert strings, booleans and integers
2380
self.default = u'%s' % (default,)
2381
elif callable(default):
2382
self.default = default
2384
# other python objects are not expected
2385
raise AssertionError('%r is not supported as a default value'
2387
self.default_from_env = default_from_env
2389
self.from_unicode = from_unicode
2390
self.unquote = unquote
2391
if invalid and invalid not in ('warning', 'error'):
2392
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2393
self.invalid = invalid
2399
def convert_from_unicode(self, store, unicode_value):
2400
if self.unquote and store is not None and unicode_value is not None:
2401
unicode_value = store.unquote(unicode_value)
2402
if self.from_unicode is None or unicode_value is None:
2403
# Don't convert or nothing to convert
2404
return unicode_value
2406
converted = self.from_unicode(unicode_value)
2407
except (ValueError, TypeError):
2408
# Invalid values are ignored
2410
if converted is None and self.invalid is not None:
2411
# The conversion failed
2412
if self.invalid == 'warning':
2413
trace.warning('Value "%s" is not valid for "%s"',
2414
unicode_value, self.name)
2415
elif self.invalid == 'error':
2416
raise ConfigOptionValueError(self.name, unicode_value)
2419
def get_override(self):
2421
for var in self.override_from_env:
2423
# If the env variable is defined, its value takes precedence
2424
value = os.environ[var].decode(osutils.get_user_encoding())
2430
def get_default(self):
2432
for var in self.default_from_env:
2434
# If the env variable is defined, its value is the default one
2435
value = os.environ[var]
2437
value = value.decode(osutils.get_user_encoding())
2442
# Otherwise, fallback to the value defined at registration
2443
if callable(self.default):
2444
value = self.default()
2445
if not isinstance(value, text_type):
2446
raise AssertionError(
2447
"Callable default value for '%s' should be unicode"
2450
value = self.default
2453
def get_help_topic(self):
2456
def get_help_text(self, additional_see_also=None, plain=True):
2458
from breezy import help_topics
2459
result += help_topics._format_see_also(additional_see_also)
2461
result = help_topics.help_as_plain_text(result)
2465
# Predefined converters to get proper values from store
2467
def bool_from_store(unicode_str):
2468
return ui.bool_from_string(unicode_str)
2471
def int_from_store(unicode_str):
2472
return int(unicode_str)
2475
_unit_suffixes = dict(K=10**3, M=10**6, G=10**9)
2477
def int_SI_from_store(unicode_str):
2478
"""Convert a human readable size in SI units, e.g 10MB into an integer.
2480
Accepted suffixes are K,M,G. It is case-insensitive and may be followed
2481
by a trailing b (i.e. Kb, MB). This is intended to be practical and not
2484
:return Integer, expanded to its base-10 value if a proper SI unit is
2485
found, None otherwise.
2487
regexp = "^(\d+)(([" + ''.join(_unit_suffixes) + "])b?)?$"
2488
p = re.compile(regexp, re.IGNORECASE)
2489
m = p.match(unicode_str)
2492
val, _, unit = m.groups()
2496
coeff = _unit_suffixes[unit.upper()]
2498
raise ValueError(gettext('{0} is not an SI unit.').format(unit))
2503
def float_from_store(unicode_str):
2504
return float(unicode_str)
2507
# Use an empty dict to initialize an empty configobj avoiding all parsing and
2509
_list_converter_config = configobj.ConfigObj(
2510
{}, encoding='utf-8', list_values=True, interpolation=False)
2513
class ListOption(Option):
2515
def __init__(self, name, default=None, default_from_env=None,
2516
help=None, invalid=None):
2517
"""A list Option definition.
2519
This overrides the base class so the conversion from a unicode string
2520
can take quoting into account.
2522
super(ListOption, self).__init__(
2523
name, default=default, default_from_env=default_from_env,
2524
from_unicode=self.from_unicode, help=help,
2525
invalid=invalid, unquote=False)
2527
def from_unicode(self, unicode_str):
2528
if not isinstance(unicode_str, string_types):
2530
# Now inject our string directly as unicode. All callers got their
2531
# value from configobj, so values that need to be quoted are already
2533
_list_converter_config.reset()
2534
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2535
maybe_list = _list_converter_config['list']
2536
if isinstance(maybe_list, string_types):
2538
# A single value, most probably the user forgot (or didn't care
2539
# to add) the final ','
2542
# The empty string, convert to empty list
2545
# We rely on ConfigObj providing us with a list already
2550
class RegistryOption(Option):
2551
"""Option for a choice from a registry."""
2553
def __init__(self, name, registry, default_from_env=None,
2554
help=None, invalid=None):
2555
"""A registry based Option definition.
2557
This overrides the base class so the conversion from a unicode string
2558
can take quoting into account.
2560
super(RegistryOption, self).__init__(
2561
name, default=lambda: unicode(registry.default_key),
2562
default_from_env=default_from_env,
2563
from_unicode=self.from_unicode, help=help,
2564
invalid=invalid, unquote=False)
2565
self.registry = registry
2567
def from_unicode(self, unicode_str):
2568
if not isinstance(unicode_str, string_types):
2571
return self.registry.get(unicode_str)
2574
"Invalid value %s for %s."
2575
"See help for a list of possible values." % (unicode_str,
2580
ret = [self._help, "\n\nThe following values are supported:\n"]
2581
for key in self.registry.keys():
2582
ret.append(" %s - %s\n" % (key, self.registry.get_help(key)))
2586
_option_ref_re = lazy_regex.lazy_compile('({[^\d\W](?:\.\w|-\w|\w)*})')
2587
"""Describes an expandable option reference.
2589
We want to match the most embedded reference first.
2591
I.e. for '{{foo}}' we will get '{foo}',
2592
for '{bar{baz}}' we will get '{baz}'
2595
def iter_option_refs(string):
2596
# Split isolate refs so every other chunk is a ref
2598
for chunk in _option_ref_re.split(string):
2603
class OptionRegistry(registry.Registry):
2604
"""Register config options by their name.
2606
This overrides ``registry.Registry`` to simplify registration by acquiring
2607
some information from the option object itself.
2610
def _check_option_name(self, option_name):
2611
"""Ensures an option name is valid.
2613
:param option_name: The name to validate.
2615
if _option_ref_re.match('{%s}' % option_name) is None:
2616
raise IllegalOptionName(option_name)
2618
def register(self, option):
2619
"""Register a new option to its name.
2621
:param option: The option to register. Its name is used as the key.
2623
self._check_option_name(option.name)
2624
super(OptionRegistry, self).register(option.name, option,
2627
def register_lazy(self, key, module_name, member_name):
2628
"""Register a new option to be loaded on request.
2630
:param key: the key to request the option later. Since the registration
2631
is lazy, it should be provided and match the option name.
2633
:param module_name: the python path to the module. Such as 'os.path'.
2635
:param member_name: the member of the module to return. If empty or
2636
None, get() will return the module itself.
2638
self._check_option_name(key)
2639
super(OptionRegistry, self).register_lazy(key,
2640
module_name, member_name)
2642
def get_help(self, key=None):
2643
"""Get the help text associated with the given key"""
2644
option = self.get(key)
2645
the_help = option.help
2646
if callable(the_help):
2647
return the_help(self, key)
2651
option_registry = OptionRegistry()
2654
# Registered options in lexicographical order
2656
option_registry.register(
2657
Option('append_revisions_only',
2658
default=None, from_unicode=bool_from_store, invalid='warning',
2660
Whether to only append revisions to the mainline.
2662
If this is set to true, then it is not possible to change the
2663
existing mainline of the branch.
2665
option_registry.register(
2666
ListOption('acceptable_keys',
2669
List of GPG key patterns which are acceptable for verification.
2671
option_registry.register(
2672
Option('add.maximum_file_size',
2673
default=u'20MB', from_unicode=int_SI_from_store,
2675
Size above which files should be added manually.
2677
Files below this size are added automatically when using ``bzr add`` without
2680
A negative value means disable the size check.
2682
option_registry.register(
2684
default=None, from_unicode=bool_from_store,
2686
Is the branch bound to ``bound_location``.
2688
If set to "True", the branch should act as a checkout, and push each commit to
2689
the bound_location. This option is normally set by ``bind``/``unbind``.
2691
See also: bound_location.
2693
option_registry.register(
2694
Option('bound_location',
2697
The location that commits should go to when acting as a checkout.
2699
This option is normally set by ``bind``.
2703
option_registry.register(
2704
Option('branch.fetch_tags', default=False, from_unicode=bool_from_store,
2706
Whether revisions associated with tags should be fetched.
2708
option_registry.register_lazy(
2709
'bzr.transform.orphan_policy', 'breezy.transform', 'opt_transform_orphan')
2710
option_registry.register(
2711
Option('bzr.workingtree.worth_saving_limit', default=10,
2712
from_unicode=int_from_store, invalid='warning',
2714
How many changes before saving the dirstate.
2716
-1 means that we will never rewrite the dirstate file for only
2717
stat-cache changes. Regardless of this setting, we will always rewrite
2718
the dirstate file if a file is added/removed/renamed/etc. This flag only
2719
affects the behavior of updating the dirstate file after we notice that
2720
a file has been touched.
2722
option_registry.register(
2723
Option('bugtracker', default=None,
2725
Default bug tracker to use.
2727
This bug tracker will be used for example when marking bugs
2728
as fixed using ``bzr commit --fixes``, if no explicit
2729
bug tracker was specified.
2731
option_registry.register(
2732
Option('check_signatures', default=CHECK_IF_POSSIBLE,
2733
from_unicode=signature_policy_from_unicode,
2735
GPG checking policy.
2737
Possible values: require, ignore, check-available (default)
2739
this option will control whether bzr will require good gpg
2740
signatures, ignore them, or check them if they are
2743
option_registry.register(
2744
Option('child_submit_format',
2745
help='''The preferred format of submissions to this branch.'''))
2746
option_registry.register(
2747
Option('child_submit_to',
2748
help='''Where submissions to this branch are mailed to.'''))
2749
option_registry.register(
2750
Option('create_signatures', default=SIGN_WHEN_REQUIRED,
2751
from_unicode=signing_policy_from_unicode,
2755
Possible values: always, never, when-required (default)
2757
This option controls whether bzr will always create
2758
gpg signatures or not on commits.
2760
option_registry.register(
2761
Option('dirstate.fdatasync', default=True,
2762
from_unicode=bool_from_store,
2764
Flush dirstate changes onto physical disk?
2766
If true (default), working tree metadata changes are flushed through the
2767
OS buffers to physical disk. This is somewhat slower, but means data
2768
should not be lost if the machine crashes. See also repository.fdatasync.
2770
option_registry.register(
2771
ListOption('debug_flags', default=[],
2772
help='Debug flags to activate.'))
2773
option_registry.register(
2774
Option('default_format', default='2a',
2775
help='Format used when creating branches.'))
2776
option_registry.register(
2777
Option('dpush_strict', default=None,
2778
from_unicode=bool_from_store,
2780
The default value for ``dpush --strict``.
2782
If present, defines the ``--strict`` option default value for checking
2783
uncommitted changes before pushing into a different VCS without any
2784
custom bzr metadata.
2786
option_registry.register(
2788
help='The command called to launch an editor to enter a message.'))
2789
option_registry.register(
2790
Option('email', override_from_env=['BRZ_EMAIL'], default=default_email,
2791
help='The users identity'))
2792
option_registry.register(
2793
Option('gpg_signing_key',
2796
GPG key to use for signing.
2798
This defaults to the first key associated with the users email.
2800
option_registry.register(
2802
help='Language to translate messages into.'))
2803
option_registry.register(
2804
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2806
Steal locks that appears to be dead.
2808
If set to True, bzr will check if a lock is supposed to be held by an
2809
active process from the same user on the same machine. If the user and
2810
machine match, but no process with the given PID is active, then bzr
2811
will automatically break the stale lock, and create a new lock for
2813
Otherwise, bzr will prompt as normal to break the lock.
2815
option_registry.register(
2816
Option('log_format', default='long',
2818
Log format to use when displaying revisions.
2820
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2821
may be provided by plugins.
2823
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2825
option_registry.register(
2826
Option('output_encoding',
2827
help= 'Unicode encoding for output'
2828
' (terminal encoding if not specified).'))
2829
option_registry.register(
2830
Option('parent_location',
2833
The location of the default branch for pull or merge.
2835
This option is normally set when creating a branch, the first ``pull`` or by
2836
``pull --remember``.
2838
option_registry.register(
2839
Option('post_commit', default=None,
2841
Post commit functions.
2843
An ordered list of python functions to call, separated by spaces.
2845
Each function takes branch, rev_id as parameters.
2847
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2849
option_registry.register(
2850
Option('public_branch',
2853
A publically-accessible version of this branch.
2855
This implies that the branch setting this option is not publically-accessible.
2856
Used and set by ``bzr send``.
2858
option_registry.register(
2859
Option('push_location',
2862
The location of the default branch for push.
2864
This option is normally set by the first ``push`` or ``push --remember``.
2866
option_registry.register(
2867
Option('push_strict', default=None,
2868
from_unicode=bool_from_store,
2870
The default value for ``push --strict``.
2872
If present, defines the ``--strict`` option default value for checking
2873
uncommitted changes before sending a merge directive.
2875
option_registry.register(
2876
Option('repository.fdatasync', default=True,
2877
from_unicode=bool_from_store,
2879
Flush repository changes onto physical disk?
2881
If true (default), repository changes are flushed through the OS buffers
2882
to physical disk. This is somewhat slower, but means data should not be
2883
lost if the machine crashes. See also dirstate.fdatasync.
2885
option_registry.register_lazy('smtp_server',
2886
'breezy.smtp_connection', 'smtp_server')
2887
option_registry.register_lazy('smtp_password',
2888
'breezy.smtp_connection', 'smtp_password')
2889
option_registry.register_lazy('smtp_username',
2890
'breezy.smtp_connection', 'smtp_username')
2891
option_registry.register(
2892
Option('selftest.timeout',
2894
from_unicode=int_from_store,
2895
help='Abort selftest if one test takes longer than this many seconds',
2898
option_registry.register(
2899
Option('send_strict', default=None,
2900
from_unicode=bool_from_store,
2902
The default value for ``send --strict``.
2904
If present, defines the ``--strict`` option default value for checking
2905
uncommitted changes before sending a bundle.
2908
option_registry.register(
2909
Option('serve.client_timeout',
2910
default=300.0, from_unicode=float_from_store,
2911
help="If we wait for a new request from a client for more than"
2912
" X seconds, consider the client idle, and hangup."))
2913
option_registry.register(
2914
Option('stacked_on_location',
2916
help="""The location where this branch is stacked on."""))
2917
option_registry.register(
2918
Option('submit_branch',
2921
The branch you intend to submit your current work to.
2923
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2924
by the ``submit:`` revision spec.
2926
option_registry.register(
2928
help='''Where submissions from this branch are mailed to.'''))
2929
option_registry.register(
2930
ListOption('suppress_warnings',
2932
help="List of warning classes to suppress."))
2933
option_registry.register(
2934
Option('validate_signatures_in_log', default=False,
2935
from_unicode=bool_from_store, invalid='warning',
2936
help='''Whether to validate signatures in brz log.'''))
2937
option_registry.register_lazy('ssl.ca_certs',
2938
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_ca_certs')
2940
option_registry.register_lazy('ssl.cert_reqs',
2941
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_cert_reqs')
2944
class Section(object):
2945
"""A section defines a dict of option name => value.
2947
This is merely a read-only dict which can add some knowledge about the
2948
options. It is *not* a python dict object though and doesn't try to mimic
2952
def __init__(self, section_id, options):
2953
self.id = section_id
2954
# We re-use the dict-like object received
2955
self.options = options
2957
def get(self, name, default=None, expand=True):
2958
return self.options.get(name, default)
2960
def iter_option_names(self):
2961
for k in self.options.keys():
2965
# Mostly for debugging use
2966
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2969
_NewlyCreatedOption = object()
2970
"""Was the option created during the MutableSection lifetime"""
2971
_DeletedOption = object()
2972
"""Was the option deleted during the MutableSection lifetime"""
2975
class MutableSection(Section):
2976
"""A section allowing changes and keeping track of the original values."""
2978
def __init__(self, section_id, options):
2979
super(MutableSection, self).__init__(section_id, options)
2980
self.reset_changes()
2982
def set(self, name, value):
2983
if name not in self.options:
2984
# This is a new option
2985
self.orig[name] = _NewlyCreatedOption
2986
elif name not in self.orig:
2987
self.orig[name] = self.get(name, None)
2988
self.options[name] = value
2990
def remove(self, name):
2991
if name not in self.orig and name in self.options:
2992
self.orig[name] = self.get(name, None)
2993
del self.options[name]
2995
def reset_changes(self):
2998
def apply_changes(self, dirty, store):
2999
"""Apply option value changes.
3001
``self`` has been reloaded from the persistent storage. ``dirty``
3002
contains the changes made since the previous loading.
3004
:param dirty: the mutable section containing the changes.
3006
:param store: the store containing the section
3008
for k, expected in dirty.orig.items():
3009
actual = dirty.get(k, _DeletedOption)
3010
reloaded = self.get(k, _NewlyCreatedOption)
3011
if actual is _DeletedOption:
3012
if k in self.options:
3016
# Report concurrent updates in an ad-hoc way. This should only
3017
# occurs when different processes try to update the same option
3018
# which is not supported (as in: the config framework is not meant
3019
# to be used as a sharing mechanism).
3020
if expected != reloaded:
3021
if actual is _DeletedOption:
3022
actual = '<DELETED>'
3023
if reloaded is _NewlyCreatedOption:
3024
reloaded = '<CREATED>'
3025
if expected is _NewlyCreatedOption:
3026
expected = '<CREATED>'
3027
# Someone changed the value since we get it from the persistent
3029
trace.warning(gettext(
3030
"Option {0} in section {1} of {2} was changed"
3031
" from {3} to {4}. The {5} value will be saved.".format(
3032
k, self.id, store.external_url(), expected,
3034
# No need to keep track of these changes
3035
self.reset_changes()
3038
class Store(object):
3039
"""Abstract interface to persistent storage for configuration options."""
3041
readonly_section_class = Section
3042
mutable_section_class = MutableSection
3045
# Which sections need to be saved (by section id). We use a dict here
3046
# so the dirty sections can be shared by multiple callers.
3047
self.dirty_sections = {}
3049
def is_loaded(self):
3050
"""Returns True if the Store has been loaded.
3052
This is used to implement lazy loading and ensure the persistent
3053
storage is queried only when needed.
3055
raise NotImplementedError(self.is_loaded)
3058
"""Loads the Store from persistent storage."""
3059
raise NotImplementedError(self.load)
3061
def _load_from_string(self, bytes):
3062
"""Create a store from a string in configobj syntax.
3064
:param bytes: A string representing the file content.
3066
raise NotImplementedError(self._load_from_string)
3069
"""Unloads the Store.
3071
This should make is_loaded() return False. This is used when the caller
3072
knows that the persistent storage has changed or may have change since
3075
raise NotImplementedError(self.unload)
3077
def quote(self, value):
3078
"""Quote a configuration option value for storing purposes.
3080
This allows Stacks to present values as they will be stored.
3084
def unquote(self, value):
3085
"""Unquote a configuration option value into unicode.
3087
The received value is quoted as stored.
3092
"""Saves the Store to persistent storage."""
3093
raise NotImplementedError(self.save)
3095
def _need_saving(self):
3096
for s in self.dirty_sections.values():
3098
# At least one dirty section contains a modification
3102
def apply_changes(self, dirty_sections):
3103
"""Apply changes from dirty sections while checking for coherency.
3105
The Store content is discarded and reloaded from persistent storage to
3106
acquire up-to-date values.
3108
Dirty sections are MutableSection which kept track of the value they
3109
are expected to update.
3111
# We need an up-to-date version from the persistent storage, unload the
3112
# store. The reload will occur when needed (triggered by the first
3113
# get_mutable_section() call below.
3115
# Apply the changes from the preserved dirty sections
3116
for section_id, dirty in dirty_sections.items():
3117
clean = self.get_mutable_section(section_id)
3118
clean.apply_changes(dirty, self)
3119
# Everything is clean now
3120
self.dirty_sections = {}
3122
def save_changes(self):
3123
"""Saves the Store to persistent storage if changes occurred.
3125
Apply the changes recorded in the mutable sections to a store content
3126
refreshed from persistent storage.
3128
raise NotImplementedError(self.save_changes)
3130
def external_url(self):
3131
raise NotImplementedError(self.external_url)
3133
def get_sections(self):
3134
"""Returns an ordered iterable of existing sections.
3136
:returns: An iterable of (store, section).
3138
raise NotImplementedError(self.get_sections)
3140
def get_mutable_section(self, section_id=None):
3141
"""Returns the specified mutable section.
3143
:param section_id: The section identifier
3145
raise NotImplementedError(self.get_mutable_section)
3148
# Mostly for debugging use
3149
return "<config.%s(%s)>" % (self.__class__.__name__,
3150
self.external_url())
3153
class CommandLineStore(Store):
3154
"A store to carry command line overrides for the config options."""
3156
def __init__(self, opts=None):
3157
super(CommandLineStore, self).__init__()
3164
# The dict should be cleared but not replaced so it can be shared.
3165
self.options.clear()
3167
def _from_cmdline(self, overrides):
3168
# Reset before accepting new definitions
3170
for over in overrides:
3172
name, value = over.split('=', 1)
3174
raise errors.BzrCommandError(
3175
gettext("Invalid '%s', should be of the form 'name=value'")
3177
self.options[name] = value
3179
def external_url(self):
3180
# Not an url but it makes debugging easier and is never needed
3184
def get_sections(self):
3185
yield self, self.readonly_section_class(None, self.options)
3188
class IniFileStore(Store):
3189
"""A config Store using ConfigObj for storage.
3191
:ivar _config_obj: Private member to hold the ConfigObj instance used to
3192
serialize/deserialize the config file.
3196
"""A config Store using ConfigObj for storage.
3198
super(IniFileStore, self).__init__()
3199
self._config_obj = None
3201
def is_loaded(self):
3202
return self._config_obj != None
3205
self._config_obj = None
3206
self.dirty_sections = {}
3208
def _load_content(self):
3209
"""Load the config file bytes.
3211
This should be provided by subclasses
3213
:return: Byte string
3215
raise NotImplementedError(self._load_content)
3217
def _save_content(self, content):
3218
"""Save the config file bytes.
3220
This should be provided by subclasses
3222
:param content: Config file bytes to write
3224
raise NotImplementedError(self._save_content)
3227
"""Load the store from the associated file."""
3228
if self.is_loaded():
3230
content = self._load_content()
3231
self._load_from_string(content)
3232
for hook in ConfigHooks['load']:
3235
def _load_from_string(self, bytes):
3236
"""Create a config store from a string.
3238
:param bytes: A string representing the file content.
3240
if self.is_loaded():
3241
raise AssertionError('Already loaded: %r' % (self._config_obj,))
3242
co_input = BytesIO(bytes)
3244
# The config files are always stored utf8-encoded
3245
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3247
except configobj.ConfigObjError as e:
3248
self._config_obj = None
3249
raise ParseConfigError(e.errors, self.external_url())
3250
except UnicodeDecodeError:
3251
raise ConfigContentError(self.external_url())
3253
def save_changes(self):
3254
if not self.is_loaded():
3257
if not self._need_saving():
3259
# Preserve the current version
3260
dirty_sections = self.dirty_sections.copy()
3261
self.apply_changes(dirty_sections)
3262
# Save to the persistent storage
3266
if not self.is_loaded():
3270
self._config_obj.write(out)
3271
self._save_content(out.getvalue())
3272
for hook in ConfigHooks['save']:
3275
def get_sections(self):
3276
"""Get the configobj section in the file order.
3278
:returns: An iterable of (store, section).
3280
# We need a loaded store
3283
except (errors.NoSuchFile, errors.PermissionDenied):
3284
# If the file can't be read, there is no sections
3286
cobj = self._config_obj
3288
yield self, self.readonly_section_class(None, cobj)
3289
for section_name in cobj.sections:
3291
self.readonly_section_class(section_name,
3292
cobj[section_name]))
3294
def get_mutable_section(self, section_id=None):
3295
# We need a loaded store
3298
except errors.NoSuchFile:
3299
# The file doesn't exist, let's pretend it was empty
3300
self._load_from_string(b'')
3301
if section_id in self.dirty_sections:
3302
# We already created a mutable section for this id
3303
return self.dirty_sections[section_id]
3304
if section_id is None:
3305
section = self._config_obj
3307
section = self._config_obj.setdefault(section_id, {})
3308
mutable_section = self.mutable_section_class(section_id, section)
3309
# All mutable sections can become dirty
3310
self.dirty_sections[section_id] = mutable_section
3311
return mutable_section
3313
def quote(self, value):
3315
# configobj conflates automagical list values and quoting
3316
self._config_obj.list_values = True
3317
return self._config_obj._quote(value)
3319
self._config_obj.list_values = False
3321
def unquote(self, value):
3322
if value and isinstance(value, string_types):
3323
# _unquote doesn't handle None nor empty strings nor anything that
3324
# is not a string, really.
3325
value = self._config_obj._unquote(value)
3328
def external_url(self):
3329
# Since an IniFileStore can be used without a file (at least in tests),
3330
# it's better to provide something than raising a NotImplementedError.
3331
# All daughter classes are supposed to provide an implementation
3333
return 'In-Process Store, no URL'
3336
class TransportIniFileStore(IniFileStore):
3337
"""IniFileStore that loads files from a transport.
3339
:ivar transport: The transport object where the config file is located.
3341
:ivar file_name: The config file basename in the transport directory.
3344
def __init__(self, transport, file_name):
3345
"""A Store using a ini file on a Transport
3347
:param transport: The transport object where the config file is located.
3348
:param file_name: The config file basename in the transport directory.
3350
super(TransportIniFileStore, self).__init__()
3351
self.transport = transport
3352
self.file_name = file_name
3354
def _load_content(self):
3356
return self.transport.get_bytes(self.file_name)
3357
except errors.PermissionDenied:
3358
trace.warning("Permission denied while trying to load "
3359
"configuration store %s.", self.external_url())
3362
def _save_content(self, content):
3363
self.transport.put_bytes(self.file_name, content)
3365
def external_url(self):
3366
# FIXME: external_url should really accepts an optional relpath
3367
# parameter (bug #750169) :-/ -- vila 2011-04-04
3368
# The following will do in the interim but maybe we don't want to
3369
# expose a path here but rather a config ID and its associated
3370
# object </hand wawe>.
3371
return urlutils.join(
3372
self.transport.external_url(), urlutils.escape(self.file_name))
3375
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3376
# unlockable stores for use with objects that can already ensure the locking
3377
# (think branches). If different stores (not based on ConfigObj) are created,
3378
# they may face the same issue.
3381
class LockableIniFileStore(TransportIniFileStore):
3382
"""A ConfigObjStore using locks on save to ensure store integrity."""
3384
def __init__(self, transport, file_name, lock_dir_name=None):
3385
"""A config Store using ConfigObj for storage.
3387
:param transport: The transport object where the config file is located.
3389
:param file_name: The config file basename in the transport directory.
3391
if lock_dir_name is None:
3392
lock_dir_name = 'lock'
3393
self.lock_dir_name = lock_dir_name
3394
super(LockableIniFileStore, self).__init__(transport, file_name)
3395
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3397
def lock_write(self, token=None):
3398
"""Takes a write lock in the directory containing the config file.
3400
If the directory doesn't exist it is created.
3402
# FIXME: This doesn't check the ownership of the created directories as
3403
# ensure_config_dir_exists does. It should if the transport is local
3404
# -- vila 2011-04-06
3405
self.transport.create_prefix()
3406
token = self._lock.lock_write(token)
3407
return lock.LogicalLockResult(self.unlock, token)
3412
def break_lock(self):
3413
self._lock.break_lock()
3417
# We need to be able to override the undecorated implementation
3418
self.save_without_locking()
3420
def save_without_locking(self):
3421
super(LockableIniFileStore, self).save()
3424
# FIXME: global, breezy, shouldn't that be 'user' instead or even
3425
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
3426
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
3428
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
3429
# functions or a registry will make it easier and clearer for tests, focusing
3430
# on the relevant parts of the API that needs testing -- vila 20110503 (based
3431
# on a poolie's remark)
3432
class GlobalStore(LockableIniFileStore):
3433
"""A config store for global options.
3435
There is a single GlobalStore for a given process.
3438
def __init__(self, possible_transports=None):
3439
(path, kind) = _config_dir()
3440
t = transport.get_transport_from_path(
3441
path, possible_transports=possible_transports)
3442
filename = {'bazaar': 'bazaar.conf', 'breezy': 'breezy.conf'}[kind]
3443
super(GlobalStore, self).__init__(t, filename)
3447
class LocationStore(LockableIniFileStore):
3448
"""A config store for options specific to a location.
3450
There is a single LocationStore for a given process.
3453
def __init__(self, possible_transports=None):
3454
t = transport.get_transport_from_path(
3455
config_dir(), possible_transports=possible_transports)
3456
super(LocationStore, self).__init__(t, 'locations.conf')
3457
self.id = 'locations'
3460
class BranchStore(TransportIniFileStore):
3461
"""A config store for branch options.
3463
There is a single BranchStore for a given branch.
3466
def __init__(self, branch):
3467
super(BranchStore, self).__init__(branch.control_transport,
3469
self.branch = branch
3473
class ControlStore(LockableIniFileStore):
3475
def __init__(self, bzrdir):
3476
super(ControlStore, self).__init__(bzrdir.transport,
3478
lock_dir_name='branch_lock')
3482
class SectionMatcher(object):
3483
"""Select sections into a given Store.
3485
This is intended to be used to postpone getting an iterable of sections
3489
def __init__(self, store):
3492
def get_sections(self):
3493
# This is where we require loading the store so we can see all defined
3495
sections = self.store.get_sections()
3496
# Walk the revisions in the order provided
3497
for store, s in sections:
3501
def match(self, section):
3502
"""Does the proposed section match.
3504
:param section: A Section object.
3506
:returns: True if the section matches, False otherwise.
3508
raise NotImplementedError(self.match)
3511
class NameMatcher(SectionMatcher):
3513
def __init__(self, store, section_id):
3514
super(NameMatcher, self).__init__(store)
3515
self.section_id = section_id
3517
def match(self, section):
3518
return section.id == self.section_id
3521
class LocationSection(Section):
3523
def __init__(self, section, extra_path, branch_name=None):
3524
super(LocationSection, self).__init__(section.id, section.options)
3525
self.extra_path = extra_path
3526
if branch_name is None:
3528
self.locals = {'relpath': extra_path,
3529
'basename': urlutils.basename(extra_path),
3530
'branchname': branch_name}
3532
def get(self, name, default=None, expand=True):
3533
value = super(LocationSection, self).get(name, default)
3534
if value is not None and expand:
3535
policy_name = self.get(name + ':policy', None)
3536
policy = _policy_value.get(policy_name, POLICY_NONE)
3537
if policy == POLICY_APPENDPATH:
3538
value = urlutils.join(value, self.extra_path)
3539
# expand section local options right now (since POLICY_APPENDPATH
3540
# will never add options references, it's ok to expand after it).
3542
for is_ref, chunk in iter_option_refs(value):
3544
chunks.append(chunk)
3547
if ref in self.locals:
3548
chunks.append(self.locals[ref])
3550
chunks.append(chunk)
3551
value = ''.join(chunks)
3555
class StartingPathMatcher(SectionMatcher):
3556
"""Select sections for a given location respecting the Store order."""
3558
# FIXME: Both local paths and urls can be used for section names as well as
3559
# ``location`` to stay consistent with ``LocationMatcher`` which itself
3560
# inherited the fuzziness from the previous ``LocationConfig``
3561
# implementation. We probably need to revisit which encoding is allowed for
3562
# both ``location`` and section names and how we normalize
3563
# them. http://pad.lv/85479, http://pad.lv/437009 and http://359320 are
3564
# related too. -- vila 2012-01-04
3566
def __init__(self, store, location):
3567
super(StartingPathMatcher, self).__init__(store)
3568
if location.startswith('file://'):
3569
location = urlutils.local_path_from_url(location)
3570
self.location = location
3572
def get_sections(self):
3573
"""Get all sections matching ``location`` in the store.
3575
The most generic sections are described first in the store, then more
3576
specific ones can be provided for reduced scopes.
3578
The returned section are therefore returned in the reversed order so
3579
the most specific ones can be found first.
3581
location_parts = self.location.rstrip('/').split('/')
3583
# Later sections are more specific, they should be returned first
3584
for _, section in reversed(list(store.get_sections())):
3585
if section.id is None:
3586
# The no-name section is always included if present
3587
yield store, LocationSection(section, self.location)
3589
section_path = section.id
3590
if section_path.startswith('file://'):
3591
# the location is already a local path or URL, convert the
3592
# section id to the same format
3593
section_path = urlutils.local_path_from_url(section_path)
3594
if (self.location.startswith(section_path)
3595
or fnmatch.fnmatch(self.location, section_path)):
3596
section_parts = section_path.rstrip('/').split('/')
3597
extra_path = '/'.join(location_parts[len(section_parts):])
3598
yield store, LocationSection(section, extra_path)
3601
class LocationMatcher(SectionMatcher):
3603
def __init__(self, store, location):
3604
super(LocationMatcher, self).__init__(store)
3605
url, params = urlutils.split_segment_parameters(location)
3606
if location.startswith('file://'):
3607
location = urlutils.local_path_from_url(location)
3608
self.location = location
3609
branch_name = params.get('branch')
3610
if branch_name is None:
3611
self.branch_name = urlutils.basename(self.location)
3613
self.branch_name = urlutils.unescape(branch_name)
3615
def _get_matching_sections(self):
3616
"""Get all sections matching ``location``."""
3617
# We slightly diverge from LocalConfig here by allowing the no-name
3618
# section as the most generic one and the lower priority.
3619
no_name_section = None
3621
# Filter out the no_name_section so _iter_for_location_by_parts can be
3622
# used (it assumes all sections have a name).
3623
for _, section in self.store.get_sections():
3624
if section.id is None:
3625
no_name_section = section
3627
all_sections.append(section)
3628
# Unfortunately _iter_for_location_by_parts deals with section names so
3629
# we have to resync.
3630
filtered_sections = _iter_for_location_by_parts(
3631
[s.id for s in all_sections], self.location)
3632
iter_all_sections = iter(all_sections)
3633
matching_sections = []
3634
if no_name_section is not None:
3635
matching_sections.append(
3636
(0, LocationSection(no_name_section, self.location)))
3637
for section_id, extra_path, length in filtered_sections:
3638
# a section id is unique for a given store so it's safe to take the
3639
# first matching section while iterating. Also, all filtered
3640
# sections are part of 'all_sections' and will always be found
3643
section = next(iter_all_sections)
3644
if section_id == section.id:
3645
section = LocationSection(section, extra_path,
3647
matching_sections.append((length, section))
3649
return matching_sections
3651
def get_sections(self):
3652
# Override the default implementation as we want to change the order
3653
# We want the longest (aka more specific) locations first
3654
sections = sorted(self._get_matching_sections(),
3655
key=lambda match: (match[0], match[1].id),
3657
# Sections mentioning 'ignore_parents' restrict the selection
3658
for _, section in sections:
3659
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3660
ignore = section.get('ignore_parents', None)
3661
if ignore is not None:
3662
ignore = ui.bool_from_string(ignore)
3665
# Finally, we have a valid section
3666
yield self.store, section
3669
# FIXME: _shared_stores should be an attribute of a library state once a
3670
# library_state object is always available.
3672
_shared_stores_at_exit_installed = False
3674
class Stack(object):
3675
"""A stack of configurations where an option can be defined"""
3677
def __init__(self, sections_def, store=None, mutable_section_id=None):
3678
"""Creates a stack of sections with an optional store for changes.
3680
:param sections_def: A list of Section or callables that returns an
3681
iterable of Section. This defines the Sections for the Stack and
3682
can be called repeatedly if needed.
3684
:param store: The optional Store where modifications will be
3685
recorded. If none is specified, no modifications can be done.
3687
:param mutable_section_id: The id of the MutableSection where changes
3688
are recorded. This requires the ``store`` parameter to be
3691
self.sections_def = sections_def
3693
self.mutable_section_id = mutable_section_id
3695
def iter_sections(self):
3696
"""Iterate all the defined sections."""
3697
# Ensuring lazy loading is achieved by delaying section matching (which
3698
# implies querying the persistent storage) until it can't be avoided
3699
# anymore by using callables to describe (possibly empty) section
3701
for sections in self.sections_def:
3702
for store, section in sections():
3703
yield store, section
3705
def get(self, name, expand=True, convert=True):
3706
"""Return the *first* option value found in the sections.
3708
This is where we guarantee that sections coming from Store are loaded
3709
lazily: the loading is delayed until we need to either check that an
3710
option exists or get its value, which in turn may require to discover
3711
in which sections it can be defined. Both of these (section and option
3712
existence) require loading the store (even partially).
3714
:param name: The queried option.
3716
:param expand: Whether options references should be expanded.
3718
:param convert: Whether the option value should be converted from
3719
unicode (do nothing for non-registered options).
3721
:returns: The value of the option.
3723
# FIXME: No caching of options nor sections yet -- vila 20110503
3725
found_store = None # Where the option value has been found
3726
# If the option is registered, it may provide additional info about
3729
opt = option_registry.get(name)
3734
def expand_and_convert(val):
3735
# This may need to be called in different contexts if the value is
3736
# None or ends up being None during expansion or conversion.
3739
if isinstance(val, string_types):
3740
val = self._expand_options_in_string(val)
3742
trace.warning('Cannot expand "%s":'
3743
' %s does not support option expansion'
3744
% (name, type(val)))
3746
val = found_store.unquote(val)
3748
val = opt.convert_from_unicode(found_store, val)
3751
# First of all, check if the environment can override the configuration
3753
if opt is not None and opt.override_from_env:
3754
value = opt.get_override()
3755
value = expand_and_convert(value)
3757
for store, section in self.iter_sections():
3758
value = section.get(name)
3759
if value is not None:
3762
value = expand_and_convert(value)
3763
if opt is not None and value is None:
3764
# If the option is registered, it may provide a default value
3765
value = opt.get_default()
3766
value = expand_and_convert(value)
3767
for hook in ConfigHooks['get']:
3768
hook(self, name, value)
3771
def expand_options(self, string, env=None):
3772
"""Expand option references in the string in the configuration context.
3774
:param string: The string containing option(s) to expand.
3776
:param env: An option dict defining additional configuration options or
3777
overriding existing ones.
3779
:returns: The expanded string.
3781
return self._expand_options_in_string(string, env)
3783
def _expand_options_in_string(self, string, env=None, _refs=None):
3784
"""Expand options in the string in the configuration context.
3786
:param string: The string to be expanded.
3788
:param env: An option dict defining additional configuration options or
3789
overriding existing ones.
3791
:param _refs: Private list (FIFO) containing the options being expanded
3794
:returns: The expanded string.
3797
# Not much to expand there
3800
# What references are currently resolved (to detect loops)
3803
# We need to iterate until no more refs appear ({{foo}} will need two
3804
# iterations for example).
3809
for is_ref, chunk in iter_option_refs(result):
3811
chunks.append(chunk)
3816
raise OptionExpansionLoop(string, _refs)
3818
value = self._expand_option(name, env, _refs)
3820
raise ExpandingUnknownOption(name, string)
3821
chunks.append(value)
3823
result = ''.join(chunks)
3826
def _expand_option(self, name, env, _refs):
3827
if env is not None and name in env:
3828
# Special case, values provided in env takes precedence over
3832
value = self.get(name, expand=False, convert=False)
3833
value = self._expand_options_in_string(value, env, _refs)
3836
def _get_mutable_section(self):
3837
"""Get the MutableSection for the Stack.
3839
This is where we guarantee that the mutable section is lazily loaded:
3840
this means we won't load the corresponding store before setting a value
3841
or deleting an option. In practice the store will often be loaded but
3842
this helps catching some programming errors.
3845
section = store.get_mutable_section(self.mutable_section_id)
3846
return store, section
3848
def set(self, name, value):
3849
"""Set a new value for the option."""
3850
store, section = self._get_mutable_section()
3851
section.set(name, store.quote(value))
3852
for hook in ConfigHooks['set']:
3853
hook(self, name, value)
3855
def remove(self, name):
3856
"""Remove an existing option."""
3857
_, section = self._get_mutable_section()
3858
section.remove(name)
3859
for hook in ConfigHooks['remove']:
3863
# Mostly for debugging use
3864
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3866
def _get_overrides(self):
3867
if breezy._global_state is not None:
3868
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
3869
return breezy._global_state.cmdline_overrides.get_sections()
3872
def get_shared_store(self, store, state=None):
3873
"""Get a known shared store.
3875
Store urls uniquely identify them and are used to ensure a single copy
3876
is shared across all users.
3878
:param store: The store known to the caller.
3880
:param state: The library state where the known stores are kept.
3882
:returns: The store received if it's not a known one, an already known
3886
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
3887
state = breezy._global_state
3889
global _shared_stores_at_exit_installed
3890
stores = _shared_stores
3891
def save_config_changes():
3892
for k, store in stores.items():
3893
store.save_changes()
3894
if not _shared_stores_at_exit_installed:
3895
# FIXME: Ugly hack waiting for library_state to always be
3896
# available. -- vila 20120731
3898
atexit.register(save_config_changes)
3899
_shared_stores_at_exit_installed = True
3901
stores = state.config_stores
3902
url = store.external_url()
3910
class MemoryStack(Stack):
3911
"""A configuration stack defined from a string.
3913
This is mainly intended for tests and requires no disk resources.
3916
def __init__(self, content=None):
3917
"""Create an in-memory stack from a given content.
3919
It uses a single store based on configobj and support reading and
3922
:param content: The initial content of the store. If None, the store is
3923
not loaded and ``_load_from_string`` can and should be used if
3926
store = IniFileStore()
3927
if content is not None:
3928
store._load_from_string(content)
3929
super(MemoryStack, self).__init__(
3930
[store.get_sections], store)
3933
class _CompatibleStack(Stack):
3934
"""Place holder for compatibility with previous design.
3936
This is intended to ease the transition from the Config-based design to the
3937
Stack-based design and should not be used nor relied upon by plugins.
3939
One assumption made here is that the daughter classes will all use Stores
3940
derived from LockableIniFileStore).
3942
It implements set() and remove () by re-loading the store before applying
3943
the modification and saving it.
3945
The long term plan being to implement a single write by store to save
3946
all modifications, this class should not be used in the interim.
3949
def set(self, name, value):
3952
super(_CompatibleStack, self).set(name, value)
3953
# Force a write to persistent storage
3956
def remove(self, name):
3959
super(_CompatibleStack, self).remove(name)
3960
# Force a write to persistent storage
3964
class GlobalStack(Stack):
3965
"""Global options only stack.
3967
The following sections are queried:
3969
* command-line overrides,
3971
* the 'DEFAULT' section in bazaar.conf
3973
This stack will use the ``DEFAULT`` section in bazaar.conf as its
3978
gstore = self.get_shared_store(GlobalStore())
3979
super(GlobalStack, self).__init__(
3980
[self._get_overrides,
3981
NameMatcher(gstore, 'DEFAULT').get_sections],
3982
gstore, mutable_section_id='DEFAULT')
3985
class LocationStack(Stack):
3986
"""Per-location options falling back to global options stack.
3989
The following sections are queried:
3991
* command-line overrides,
3993
* the sections matching ``location`` in ``locations.conf``, the order being
3994
defined by the number of path components in the section glob, higher
3995
numbers first (from most specific section to most generic).
3997
* the 'DEFAULT' section in bazaar.conf
3999
This stack will use the ``location`` section in locations.conf as its
4003
def __init__(self, location):
4004
"""Make a new stack for a location and global configuration.
4006
:param location: A URL prefix to """
4007
lstore = self.get_shared_store(LocationStore())
4008
if location.startswith('file://'):
4009
location = urlutils.local_path_from_url(location)
4010
gstore = self.get_shared_store(GlobalStore())
4011
super(LocationStack, self).__init__(
4012
[self._get_overrides,
4013
LocationMatcher(lstore, location).get_sections,
4014
NameMatcher(gstore, 'DEFAULT').get_sections],
4015
lstore, mutable_section_id=location)
4018
class BranchStack(Stack):
4019
"""Per-location options falling back to branch then global options stack.
4021
The following sections are queried:
4023
* command-line overrides,
4025
* the sections matching ``location`` in ``locations.conf``, the order being
4026
defined by the number of path components in the section glob, higher
4027
numbers first (from most specific section to most generic),
4029
* the no-name section in branch.conf,
4031
* the ``DEFAULT`` section in ``bazaar.conf``.
4033
This stack will use the no-name section in ``branch.conf`` as its
4037
def __init__(self, branch):
4038
lstore = self.get_shared_store(LocationStore())
4039
bstore = branch._get_config_store()
4040
gstore = self.get_shared_store(GlobalStore())
4041
super(BranchStack, self).__init__(
4042
[self._get_overrides,
4043
LocationMatcher(lstore, branch.base).get_sections,
4044
NameMatcher(bstore, None).get_sections,
4045
NameMatcher(gstore, 'DEFAULT').get_sections],
4047
self.branch = branch
4049
def lock_write(self, token=None):
4050
return self.branch.lock_write(token)
4053
return self.branch.unlock()
4056
def set(self, name, value):
4057
super(BranchStack, self).set(name, value)
4058
# Unlocking the branch will trigger a store.save_changes() so the last
4059
# unlock saves all the changes.
4062
def remove(self, name):
4063
super(BranchStack, self).remove(name)
4064
# Unlocking the branch will trigger a store.save_changes() so the last
4065
# unlock saves all the changes.
4068
class RemoteControlStack(Stack):
4069
"""Remote control-only options stack."""
4071
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
4072
# with the stack used for remote bzr dirs. RemoteControlStack only uses
4073
# control.conf and is used only for stack options.
4075
def __init__(self, bzrdir):
4076
cstore = bzrdir._get_config_store()
4077
super(RemoteControlStack, self).__init__(
4078
[NameMatcher(cstore, None).get_sections],
4080
self.controldir = bzrdir
4083
class BranchOnlyStack(Stack):
4084
"""Branch-only options stack."""
4086
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
4087
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
4088
# -- vila 2011-12-16
4090
def __init__(self, branch):
4091
bstore = branch._get_config_store()
4092
super(BranchOnlyStack, self).__init__(
4093
[NameMatcher(bstore, None).get_sections],
4095
self.branch = branch
4097
def lock_write(self, token=None):
4098
return self.branch.lock_write(token)
4101
return self.branch.unlock()
4104
def set(self, name, value):
4105
super(BranchOnlyStack, self).set(name, value)
4106
# Force a write to persistent storage
4107
self.store.save_changes()
4110
def remove(self, name):
4111
super(BranchOnlyStack, self).remove(name)
4112
# Force a write to persistent storage
4113
self.store.save_changes()
4116
class cmd_config(commands.Command):
4117
__doc__ = """Display, set or remove a configuration option.
4119
Display the active value for option NAME.
4121
If --all is specified, NAME is interpreted as a regular expression and all
4122
matching options are displayed mentioning their scope and without resolving
4123
option references in the value). The active value that bzr will take into
4124
account is the first one displayed for each option.
4126
If NAME is not given, --all .* is implied (all options are displayed for the
4129
Setting a value is achieved by using NAME=value without spaces. The value
4130
is set in the most relevant scope and can be checked by displaying the
4133
Removing a value is achieved by using --remove NAME.
4136
takes_args = ['name?']
4140
# FIXME: This should be a registry option so that plugins can register
4141
# their own config files (or not) and will also address
4142
# http://pad.lv/788991 -- vila 20101115
4143
commands.Option('scope', help='Reduce the scope to the specified'
4144
' configuration file.',
4146
commands.Option('all',
4147
help='Display all the defined values for the matching options.',
4149
commands.Option('remove', help='Remove the option from'
4150
' the configuration file.'),
4153
_see_also = ['configuration']
4155
@commands.display_command
4156
def run(self, name=None, all=False, directory=None, scope=None,
4158
if directory is None:
4160
directory = directory_service.directories.dereference(directory)
4161
directory = urlutils.normalize_url(directory)
4163
raise errors.BzrError(
4164
'--all and --remove are mutually exclusive.')
4166
# Delete the option in the given scope
4167
self._remove_config_option(name, directory, scope)
4169
# Defaults to all options
4170
self._show_matching_options('.*', directory, scope)
4173
name, value = name.split('=', 1)
4175
# Display the option(s) value(s)
4177
self._show_matching_options(name, directory, scope)
4179
self._show_value(name, directory, scope)
4182
raise errors.BzrError(
4183
'Only one option can be set.')
4184
# Set the option value
4185
self._set_config_option(name, value, directory, scope)
4187
def _get_stack(self, directory, scope=None, write_access=False):
4188
"""Get the configuration stack specified by ``directory`` and ``scope``.
4190
:param directory: Where the configurations are derived from.
4192
:param scope: A specific config to start from.
4194
:param write_access: Whether a write access to the stack will be
4197
# FIXME: scope should allow access to plugin-specific stacks (even
4198
# reduced to the plugin-specific store), related to
4199
# http://pad.lv/788991 -- vila 2011-11-15
4200
if scope is not None:
4201
if scope == 'breezy':
4202
return GlobalStack()
4203
elif scope == 'locations':
4204
return LocationStack(directory)
4205
elif scope == 'branch':
4207
controldir.ControlDir.open_containing_tree_or_branch(
4210
self.add_cleanup(br.lock_write().unlock)
4211
return br.get_config_stack()
4212
raise NoSuchConfig(scope)
4216
controldir.ControlDir.open_containing_tree_or_branch(
4219
self.add_cleanup(br.lock_write().unlock)
4220
return br.get_config_stack()
4221
except errors.NotBranchError:
4222
return LocationStack(directory)
4224
def _quote_multiline(self, value):
4226
value = '"""' + value + '"""'
4229
def _show_value(self, name, directory, scope):
4230
conf = self._get_stack(directory, scope)
4231
value = conf.get(name, expand=True, convert=False)
4232
if value is not None:
4233
# Quote the value appropriately
4234
value = self._quote_multiline(value)
4235
self.outf.write('%s\n' % (value,))
4237
raise NoSuchConfigOption(name)
4239
def _show_matching_options(self, name, directory, scope):
4240
name = lazy_regex.lazy_compile(name)
4241
# We want any error in the regexp to be raised *now* so we need to
4242
# avoid the delay introduced by the lazy regexp. But, we still do
4243
# want the nicer errors raised by lazy_regex.
4244
name._compile_and_collapse()
4247
conf = self._get_stack(directory, scope)
4248
for store, section in conf.iter_sections():
4249
for oname in section.iter_option_names():
4250
if name.search(oname):
4251
if cur_store_id != store.id:
4252
# Explain where the options are defined
4253
self.outf.write('%s:\n' % (store.id,))
4254
cur_store_id = store.id
4256
if (section.id is not None and cur_section != section.id):
4257
# Display the section id as it appears in the store
4258
# (None doesn't appear by definition)
4259
self.outf.write(' [%s]\n' % (section.id,))
4260
cur_section = section.id
4261
value = section.get(oname, expand=False)
4262
# Quote the value appropriately
4263
value = self._quote_multiline(value)
4264
self.outf.write(' %s = %s\n' % (oname, value))
4266
def _set_config_option(self, name, value, directory, scope):
4267
conf = self._get_stack(directory, scope, write_access=True)
4268
conf.set(name, value)
4269
# Explicitly save the changes
4270
conf.store.save_changes()
4272
def _remove_config_option(self, name, directory, scope):
4274
raise errors.BzrCommandError(
4275
'--remove expects an option to remove.')
4276
conf = self._get_stack(directory, scope, write_access=True)
4279
# Explicitly save the changes
4280
conf.store.save_changes()
4282
raise NoSuchConfigOption(name)
4287
# We need adapters that can build a Store or a Stack in a test context. Test
4288
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4289
# themselves. The builder will receive a test instance and should return a
4290
# ready-to-use store or stack. Plugins that define new store/stacks can also
4291
# register themselves here to be tested against the tests defined in
4292
# breezy.tests.test_config. Note that the builder can be called multiple times
4293
# for the same test.
4295
# The registered object should be a callable receiving a test instance
4296
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4298
test_store_builder_registry = registry.Registry()
4300
# The registered object should be a callable receiving a test instance
4301
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4303
test_stack_builder_registry = registry.Registry()