1508
2260
configobj[name] = value
1510
2262
configobj.setdefault(section, {})[name] = value
2263
for hook in OldConfigHooks['set']:
2264
hook(self, name, value)
2265
self._set_configobj(configobj)
2267
def remove_option(self, option_name, section_name=None):
2268
configobj = self._get_configobj()
2269
if section_name is None:
2270
del configobj[option_name]
2272
del configobj[section_name][option_name]
2273
for hook in OldConfigHooks['remove']:
2274
hook(self, option_name)
1511
2275
self._set_configobj(configobj)
1513
2277
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2279
f = StringIO(self._transport.get_bytes(self._filename))
2280
for hook in OldConfigHooks['load']:
1516
2283
except errors.NoSuchFile:
1517
2284
return StringIO()
2285
except errors.PermissionDenied, e:
2286
trace.warning("Permission denied while trying to open "
2287
"configuration file %s.", urlutils.unescape_for_display(
2288
urlutils.join(self._transport.base, self._filename), "utf-8"))
2291
def _external_url(self):
2292
return urlutils.join(self._transport.external_url(), self._filename)
1519
2294
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2295
f = self._get_config_file()
2298
conf = ConfigObj(f, encoding='utf-8')
2299
except configobj.ConfigObjError, e:
2300
raise errors.ParseConfigError(e.errors, self._external_url())
2301
except UnicodeDecodeError:
2302
raise errors.ConfigContentError(self._external_url())
1522
2307
def _set_configobj(self, configobj):
1523
2308
out_file = StringIO()
1524
2309
configobj.write(out_file)
1525
2310
out_file.seek(0)
1526
2311
self._transport.put_file(self._filename, out_file)
2312
for hook in OldConfigHooks['save']:
2316
class Option(object):
2317
"""An option definition.
2319
The option *values* are stored in config files and found in sections.
2321
Here we define various properties about the option itself, its default
2322
value, how to convert it from stores, what to do when invalid values are
2323
encoutered, in which config files it can be stored.
2326
def __init__(self, name, override_from_env=None,
2327
default=None, default_from_env=None,
2328
help=None, from_unicode=None, invalid=None, unquote=True):
2329
"""Build an option definition.
2331
:param name: the name used to refer to the option.
2333
:param override_from_env: A list of environment variables which can
2334
provide override any configuration setting.
2336
:param default: the default value to use when none exist in the config
2337
stores. This is either a string that ``from_unicode`` will convert
2338
into the proper type, a callable returning a unicode string so that
2339
``from_unicode`` can be used on the return value, or a python
2340
object that can be stringified (so only the empty list is supported
2343
:param default_from_env: A list of environment variables which can
2344
provide a default value. 'default' will be used only if none of the
2345
variables specified here are set in the environment.
2347
:param help: a doc string to explain the option to the user.
2349
:param from_unicode: a callable to convert the unicode string
2350
representing the option value in a store or its default value.
2352
:param invalid: the action to be taken when an invalid value is
2353
encountered in a store. This is called only when from_unicode is
2354
invoked to convert a string and returns None or raise ValueError or
2355
TypeError. Accepted values are: None (ignore invalid values),
2356
'warning' (emit a warning), 'error' (emit an error message and
2359
:param unquote: should the unicode value be unquoted before conversion.
2360
This should be used only when the store providing the values cannot
2361
safely unquote them (see http://pad.lv/906897). It is provided so
2362
daughter classes can handle the quoting themselves.
2364
if override_from_env is None:
2365
override_from_env = []
2366
if default_from_env is None:
2367
default_from_env = []
2369
self.override_from_env = override_from_env
2370
# Convert the default value to a unicode string so all values are
2371
# strings internally before conversion (via from_unicode) is attempted.
2374
elif isinstance(default, list):
2375
# Only the empty list is supported
2377
raise AssertionError(
2378
'Only empty lists are supported as default values')
2380
elif isinstance(default, (str, unicode, bool, int, float)):
2381
# Rely on python to convert strings, booleans and integers
2382
self.default = u'%s' % (default,)
2383
elif callable(default):
2384
self.default = default
2386
# other python objects are not expected
2387
raise AssertionError('%r is not supported as a default value'
2389
self.default_from_env = default_from_env
2391
self.from_unicode = from_unicode
2392
self.unquote = unquote
2393
if invalid and invalid not in ('warning', 'error'):
2394
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2395
self.invalid = invalid
2401
def convert_from_unicode(self, store, unicode_value):
2402
if self.unquote and store is not None and unicode_value is not None:
2403
unicode_value = store.unquote(unicode_value)
2404
if self.from_unicode is None or unicode_value is None:
2405
# Don't convert or nothing to convert
2406
return unicode_value
2408
converted = self.from_unicode(unicode_value)
2409
except (ValueError, TypeError):
2410
# Invalid values are ignored
2412
if converted is None and self.invalid is not None:
2413
# The conversion failed
2414
if self.invalid == 'warning':
2415
trace.warning('Value "%s" is not valid for "%s"',
2416
unicode_value, self.name)
2417
elif self.invalid == 'error':
2418
raise errors.ConfigOptionValueError(self.name, unicode_value)
2421
def get_override(self):
2423
for var in self.override_from_env:
2425
# If the env variable is defined, its value takes precedence
2426
value = os.environ[var].decode(osutils.get_user_encoding())
2432
def get_default(self):
2434
for var in self.default_from_env:
2436
# If the env variable is defined, its value is the default one
2437
value = os.environ[var].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, unicode):
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, basestring):
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, basestring):
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, basestring):
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 errors.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_command',
2796
Program to use use for creating signatures.
2798
This should support at least the -u and --clearsign options.
2800
option_registry.register(
2801
Option('gpg_signing_key',
2804
GPG key to use for signing.
2806
This defaults to the first key associated with the users email.
2808
option_registry.register(
2809
Option('ignore_missing_extensions', default=False,
2810
from_unicode=bool_from_store,
2812
Control the missing extensions warning display.
2814
The warning will not be emitted if set to True.
2816
option_registry.register(
2818
help='Language to translate messages into.'))
2819
option_registry.register(
2820
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2822
Steal locks that appears to be dead.
2824
If set to True, bzr will check if a lock is supposed to be held by an
2825
active process from the same user on the same machine. If the user and
2826
machine match, but no process with the given PID is active, then bzr
2827
will automatically break the stale lock, and create a new lock for
2829
Otherwise, bzr will prompt as normal to break the lock.
2831
option_registry.register(
2832
Option('log_format', default='long',
2834
Log format to use when displaying revisions.
2836
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2837
may be provided by plugins.
2839
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2841
option_registry.register(
2842
Option('output_encoding',
2843
help= 'Unicode encoding for output'
2844
' (terminal encoding if not specified).'))
2845
option_registry.register(
2846
Option('parent_location',
2849
The location of the default branch for pull or merge.
2851
This option is normally set when creating a branch, the first ``pull`` or by
2852
``pull --remember``.
2854
option_registry.register(
2855
Option('post_commit', default=None,
2857
Post commit functions.
2859
An ordered list of python functions to call, separated by spaces.
2861
Each function takes branch, rev_id as parameters.
2863
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2865
option_registry.register(
2866
Option('public_branch',
2869
A publically-accessible version of this branch.
2871
This implies that the branch setting this option is not publically-accessible.
2872
Used and set by ``bzr send``.
2874
option_registry.register(
2875
Option('push_location',
2878
The location of the default branch for push.
2880
This option is normally set by the first ``push`` or ``push --remember``.
2882
option_registry.register(
2883
Option('push_strict', default=None,
2884
from_unicode=bool_from_store,
2886
The default value for ``push --strict``.
2888
If present, defines the ``--strict`` option default value for checking
2889
uncommitted changes before sending a merge directive.
2891
option_registry.register(
2892
Option('repository.fdatasync', default=True,
2893
from_unicode=bool_from_store,
2895
Flush repository changes onto physical disk?
2897
If true (default), repository changes are flushed through the OS buffers
2898
to physical disk. This is somewhat slower, but means data should not be
2899
lost if the machine crashes. See also dirstate.fdatasync.
2901
option_registry.register_lazy('smtp_server',
2902
'breezy.smtp_connection', 'smtp_server')
2903
option_registry.register_lazy('smtp_password',
2904
'breezy.smtp_connection', 'smtp_password')
2905
option_registry.register_lazy('smtp_username',
2906
'breezy.smtp_connection', 'smtp_username')
2907
option_registry.register(
2908
Option('selftest.timeout',
2910
from_unicode=int_from_store,
2911
help='Abort selftest if one test takes longer than this many seconds',
2914
option_registry.register(
2915
Option('send_strict', default=None,
2916
from_unicode=bool_from_store,
2918
The default value for ``send --strict``.
2920
If present, defines the ``--strict`` option default value for checking
2921
uncommitted changes before sending a bundle.
2924
option_registry.register(
2925
Option('serve.client_timeout',
2926
default=300.0, from_unicode=float_from_store,
2927
help="If we wait for a new request from a client for more than"
2928
" X seconds, consider the client idle, and hangup."))
2929
option_registry.register(
2930
Option('stacked_on_location',
2932
help="""The location where this branch is stacked on."""))
2933
option_registry.register(
2934
Option('submit_branch',
2937
The branch you intend to submit your current work to.
2939
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2940
by the ``submit:`` revision spec.
2942
option_registry.register(
2944
help='''Where submissions from this branch are mailed to.'''))
2945
option_registry.register(
2946
ListOption('suppress_warnings',
2948
help="List of warning classes to suppress."))
2949
option_registry.register(
2950
Option('validate_signatures_in_log', default=False,
2951
from_unicode=bool_from_store, invalid='warning',
2952
help='''Whether to validate signatures in brz log.'''))
2953
option_registry.register_lazy('ssl.ca_certs',
2954
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_ca_certs')
2956
option_registry.register_lazy('ssl.cert_reqs',
2957
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_cert_reqs')
2960
class Section(object):
2961
"""A section defines a dict of option name => value.
2963
This is merely a read-only dict which can add some knowledge about the
2964
options. It is *not* a python dict object though and doesn't try to mimic
2968
def __init__(self, section_id, options):
2969
self.id = section_id
2970
# We re-use the dict-like object received
2971
self.options = options
2973
def get(self, name, default=None, expand=True):
2974
return self.options.get(name, default)
2976
def iter_option_names(self):
2977
for k in self.options.iterkeys():
2981
# Mostly for debugging use
2982
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2985
_NewlyCreatedOption = object()
2986
"""Was the option created during the MutableSection lifetime"""
2987
_DeletedOption = object()
2988
"""Was the option deleted during the MutableSection lifetime"""
2991
class MutableSection(Section):
2992
"""A section allowing changes and keeping track of the original values."""
2994
def __init__(self, section_id, options):
2995
super(MutableSection, self).__init__(section_id, options)
2996
self.reset_changes()
2998
def set(self, name, value):
2999
if name not in self.options:
3000
# This is a new option
3001
self.orig[name] = _NewlyCreatedOption
3002
elif name not in self.orig:
3003
self.orig[name] = self.get(name, None)
3004
self.options[name] = value
3006
def remove(self, name):
3007
if name not in self.orig and name in self.options:
3008
self.orig[name] = self.get(name, None)
3009
del self.options[name]
3011
def reset_changes(self):
3014
def apply_changes(self, dirty, store):
3015
"""Apply option value changes.
3017
``self`` has been reloaded from the persistent storage. ``dirty``
3018
contains the changes made since the previous loading.
3020
:param dirty: the mutable section containing the changes.
3022
:param store: the store containing the section
3024
for k, expected in dirty.orig.iteritems():
3025
actual = dirty.get(k, _DeletedOption)
3026
reloaded = self.get(k, _NewlyCreatedOption)
3027
if actual is _DeletedOption:
3028
if k in self.options:
3032
# Report concurrent updates in an ad-hoc way. This should only
3033
# occurs when different processes try to update the same option
3034
# which is not supported (as in: the config framework is not meant
3035
# to be used as a sharing mechanism).
3036
if expected != reloaded:
3037
if actual is _DeletedOption:
3038
actual = '<DELETED>'
3039
if reloaded is _NewlyCreatedOption:
3040
reloaded = '<CREATED>'
3041
if expected is _NewlyCreatedOption:
3042
expected = '<CREATED>'
3043
# Someone changed the value since we get it from the persistent
3045
trace.warning(gettext(
3046
"Option {0} in section {1} of {2} was changed"
3047
" from {3} to {4}. The {5} value will be saved.".format(
3048
k, self.id, store.external_url(), expected,
3050
# No need to keep track of these changes
3051
self.reset_changes()
3054
class Store(object):
3055
"""Abstract interface to persistent storage for configuration options."""
3057
readonly_section_class = Section
3058
mutable_section_class = MutableSection
3061
# Which sections need to be saved (by section id). We use a dict here
3062
# so the dirty sections can be shared by multiple callers.
3063
self.dirty_sections = {}
3065
def is_loaded(self):
3066
"""Returns True if the Store has been loaded.
3068
This is used to implement lazy loading and ensure the persistent
3069
storage is queried only when needed.
3071
raise NotImplementedError(self.is_loaded)
3074
"""Loads the Store from persistent storage."""
3075
raise NotImplementedError(self.load)
3077
def _load_from_string(self, bytes):
3078
"""Create a store from a string in configobj syntax.
3080
:param bytes: A string representing the file content.
3082
raise NotImplementedError(self._load_from_string)
3085
"""Unloads the Store.
3087
This should make is_loaded() return False. This is used when the caller
3088
knows that the persistent storage has changed or may have change since
3091
raise NotImplementedError(self.unload)
3093
def quote(self, value):
3094
"""Quote a configuration option value for storing purposes.
3096
This allows Stacks to present values as they will be stored.
3100
def unquote(self, value):
3101
"""Unquote a configuration option value into unicode.
3103
The received value is quoted as stored.
3108
"""Saves the Store to persistent storage."""
3109
raise NotImplementedError(self.save)
3111
def _need_saving(self):
3112
for s in self.dirty_sections.values():
3114
# At least one dirty section contains a modification
3118
def apply_changes(self, dirty_sections):
3119
"""Apply changes from dirty sections while checking for coherency.
3121
The Store content is discarded and reloaded from persistent storage to
3122
acquire up-to-date values.
3124
Dirty sections are MutableSection which kept track of the value they
3125
are expected to update.
3127
# We need an up-to-date version from the persistent storage, unload the
3128
# store. The reload will occur when needed (triggered by the first
3129
# get_mutable_section() call below.
3131
# Apply the changes from the preserved dirty sections
3132
for section_id, dirty in dirty_sections.iteritems():
3133
clean = self.get_mutable_section(section_id)
3134
clean.apply_changes(dirty, self)
3135
# Everything is clean now
3136
self.dirty_sections = {}
3138
def save_changes(self):
3139
"""Saves the Store to persistent storage if changes occurred.
3141
Apply the changes recorded in the mutable sections to a store content
3142
refreshed from persistent storage.
3144
raise NotImplementedError(self.save_changes)
3146
def external_url(self):
3147
raise NotImplementedError(self.external_url)
3149
def get_sections(self):
3150
"""Returns an ordered iterable of existing sections.
3152
:returns: An iterable of (store, section).
3154
raise NotImplementedError(self.get_sections)
3156
def get_mutable_section(self, section_id=None):
3157
"""Returns the specified mutable section.
3159
:param section_id: The section identifier
3161
raise NotImplementedError(self.get_mutable_section)
3164
# Mostly for debugging use
3165
return "<config.%s(%s)>" % (self.__class__.__name__,
3166
self.external_url())
3169
class CommandLineStore(Store):
3170
"A store to carry command line overrides for the config options."""
3172
def __init__(self, opts=None):
3173
super(CommandLineStore, self).__init__()
3180
# The dict should be cleared but not replaced so it can be shared.
3181
self.options.clear()
3183
def _from_cmdline(self, overrides):
3184
# Reset before accepting new definitions
3186
for over in overrides:
3188
name, value = over.split('=', 1)
3190
raise errors.BzrCommandError(
3191
gettext("Invalid '%s', should be of the form 'name=value'")
3193
self.options[name] = value
3195
def external_url(self):
3196
# Not an url but it makes debugging easier and is never needed
3200
def get_sections(self):
3201
yield self, self.readonly_section_class(None, self.options)
3204
class IniFileStore(Store):
3205
"""A config Store using ConfigObj for storage.
3207
:ivar _config_obj: Private member to hold the ConfigObj instance used to
3208
serialize/deserialize the config file.
3212
"""A config Store using ConfigObj for storage.
3214
super(IniFileStore, self).__init__()
3215
self._config_obj = None
3217
def is_loaded(self):
3218
return self._config_obj != None
3221
self._config_obj = None
3222
self.dirty_sections = {}
3224
def _load_content(self):
3225
"""Load the config file bytes.
3227
This should be provided by subclasses
3229
:return: Byte string
3231
raise NotImplementedError(self._load_content)
3233
def _save_content(self, content):
3234
"""Save the config file bytes.
3236
This should be provided by subclasses
3238
:param content: Config file bytes to write
3240
raise NotImplementedError(self._save_content)
3243
"""Load the store from the associated file."""
3244
if self.is_loaded():
3246
content = self._load_content()
3247
self._load_from_string(content)
3248
for hook in ConfigHooks['load']:
3251
def _load_from_string(self, bytes):
3252
"""Create a config store from a string.
3254
:param bytes: A string representing the file content.
3256
if self.is_loaded():
3257
raise AssertionError('Already loaded: %r' % (self._config_obj,))
3258
co_input = StringIO(bytes)
3260
# The config files are always stored utf8-encoded
3261
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3263
except configobj.ConfigObjError, e:
3264
self._config_obj = None
3265
raise errors.ParseConfigError(e.errors, self.external_url())
3266
except UnicodeDecodeError:
3267
raise errors.ConfigContentError(self.external_url())
3269
def save_changes(self):
3270
if not self.is_loaded():
3273
if not self._need_saving():
3275
# Preserve the current version
3276
dirty_sections = dict(self.dirty_sections.items())
3277
self.apply_changes(dirty_sections)
3278
# Save to the persistent storage
3282
if not self.is_loaded():
3286
self._config_obj.write(out)
3287
self._save_content(out.getvalue())
3288
for hook in ConfigHooks['save']:
3291
def get_sections(self):
3292
"""Get the configobj section in the file order.
3294
:returns: An iterable of (store, section).
3296
# We need a loaded store
3299
except (errors.NoSuchFile, errors.PermissionDenied):
3300
# If the file can't be read, there is no sections
3302
cobj = self._config_obj
3304
yield self, self.readonly_section_class(None, cobj)
3305
for section_name in cobj.sections:
3307
self.readonly_section_class(section_name,
3308
cobj[section_name]))
3310
def get_mutable_section(self, section_id=None):
3311
# We need a loaded store
3314
except errors.NoSuchFile:
3315
# The file doesn't exist, let's pretend it was empty
3316
self._load_from_string('')
3317
if section_id in self.dirty_sections:
3318
# We already created a mutable section for this id
3319
return self.dirty_sections[section_id]
3320
if section_id is None:
3321
section = self._config_obj
3323
section = self._config_obj.setdefault(section_id, {})
3324
mutable_section = self.mutable_section_class(section_id, section)
3325
# All mutable sections can become dirty
3326
self.dirty_sections[section_id] = mutable_section
3327
return mutable_section
3329
def quote(self, value):
3331
# configobj conflates automagical list values and quoting
3332
self._config_obj.list_values = True
3333
return self._config_obj._quote(value)
3335
self._config_obj.list_values = False
3337
def unquote(self, value):
3338
if value and isinstance(value, basestring):
3339
# _unquote doesn't handle None nor empty strings nor anything that
3340
# is not a string, really.
3341
value = self._config_obj._unquote(value)
3344
def external_url(self):
3345
# Since an IniFileStore can be used without a file (at least in tests),
3346
# it's better to provide something than raising a NotImplementedError.
3347
# All daughter classes are supposed to provide an implementation
3349
return 'In-Process Store, no URL'
3352
class TransportIniFileStore(IniFileStore):
3353
"""IniFileStore that loads files from a transport.
3355
:ivar transport: The transport object where the config file is located.
3357
:ivar file_name: The config file basename in the transport directory.
3360
def __init__(self, transport, file_name):
3361
"""A Store using a ini file on a Transport
3363
:param transport: The transport object where the config file is located.
3364
:param file_name: The config file basename in the transport directory.
3366
super(TransportIniFileStore, self).__init__()
3367
self.transport = transport
3368
self.file_name = file_name
3370
def _load_content(self):
3372
return self.transport.get_bytes(self.file_name)
3373
except errors.PermissionDenied:
3374
trace.warning("Permission denied while trying to load "
3375
"configuration store %s.", self.external_url())
3378
def _save_content(self, content):
3379
self.transport.put_bytes(self.file_name, content)
3381
def external_url(self):
3382
# FIXME: external_url should really accepts an optional relpath
3383
# parameter (bug #750169) :-/ -- vila 2011-04-04
3384
# The following will do in the interim but maybe we don't want to
3385
# expose a path here but rather a config ID and its associated
3386
# object </hand wawe>.
3387
return urlutils.join(self.transport.external_url(), self.file_name)
3390
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3391
# unlockable stores for use with objects that can already ensure the locking
3392
# (think branches). If different stores (not based on ConfigObj) are created,
3393
# they may face the same issue.
3396
class LockableIniFileStore(TransportIniFileStore):
3397
"""A ConfigObjStore using locks on save to ensure store integrity."""
3399
def __init__(self, transport, file_name, lock_dir_name=None):
3400
"""A config Store using ConfigObj for storage.
3402
:param transport: The transport object where the config file is located.
3404
:param file_name: The config file basename in the transport directory.
3406
if lock_dir_name is None:
3407
lock_dir_name = 'lock'
3408
self.lock_dir_name = lock_dir_name
3409
super(LockableIniFileStore, self).__init__(transport, file_name)
3410
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3412
def lock_write(self, token=None):
3413
"""Takes a write lock in the directory containing the config file.
3415
If the directory doesn't exist it is created.
3417
# FIXME: This doesn't check the ownership of the created directories as
3418
# ensure_config_dir_exists does. It should if the transport is local
3419
# -- vila 2011-04-06
3420
self.transport.create_prefix()
3421
return self._lock.lock_write(token)
3426
def break_lock(self):
3427
self._lock.break_lock()
3431
# We need to be able to override the undecorated implementation
3432
self.save_without_locking()
3434
def save_without_locking(self):
3435
super(LockableIniFileStore, self).save()
3438
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
3439
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
3440
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
3442
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
3443
# functions or a registry will make it easier and clearer for tests, focusing
3444
# on the relevant parts of the API that needs testing -- vila 20110503 (based
3445
# on a poolie's remark)
3446
class GlobalStore(LockableIniFileStore):
3447
"""A config store for global options.
3449
There is a single GlobalStore for a given process.
3452
def __init__(self, possible_transports=None):
3453
t = transport.get_transport_from_path(
3454
config_dir(), possible_transports=possible_transports)
3455
super(GlobalStore, self).__init__(t, 'bazaar.conf')
3459
class LocationStore(LockableIniFileStore):
3460
"""A config store for options specific to a location.
3462
There is a single LocationStore for a given process.
3465
def __init__(self, possible_transports=None):
3466
t = transport.get_transport_from_path(
3467
config_dir(), possible_transports=possible_transports)
3468
super(LocationStore, self).__init__(t, 'locations.conf')
3469
self.id = 'locations'
3472
class BranchStore(TransportIniFileStore):
3473
"""A config store for branch options.
3475
There is a single BranchStore for a given branch.
3478
def __init__(self, branch):
3479
super(BranchStore, self).__init__(branch.control_transport,
3481
self.branch = branch
3485
class ControlStore(LockableIniFileStore):
3487
def __init__(self, bzrdir):
3488
super(ControlStore, self).__init__(bzrdir.transport,
3490
lock_dir_name='branch_lock')
3494
class SectionMatcher(object):
3495
"""Select sections into a given Store.
3497
This is intended to be used to postpone getting an iterable of sections
3501
def __init__(self, store):
3504
def get_sections(self):
3505
# This is where we require loading the store so we can see all defined
3507
sections = self.store.get_sections()
3508
# Walk the revisions in the order provided
3509
for store, s in sections:
3513
def match(self, section):
3514
"""Does the proposed section match.
3516
:param section: A Section object.
3518
:returns: True if the section matches, False otherwise.
3520
raise NotImplementedError(self.match)
3523
class NameMatcher(SectionMatcher):
3525
def __init__(self, store, section_id):
3526
super(NameMatcher, self).__init__(store)
3527
self.section_id = section_id
3529
def match(self, section):
3530
return section.id == self.section_id
3533
class LocationSection(Section):
3535
def __init__(self, section, extra_path, branch_name=None):
3536
super(LocationSection, self).__init__(section.id, section.options)
3537
self.extra_path = extra_path
3538
if branch_name is None:
3540
self.locals = {'relpath': extra_path,
3541
'basename': urlutils.basename(extra_path),
3542
'branchname': branch_name}
3544
def get(self, name, default=None, expand=True):
3545
value = super(LocationSection, self).get(name, default)
3546
if value is not None and expand:
3547
policy_name = self.get(name + ':policy', None)
3548
policy = _policy_value.get(policy_name, POLICY_NONE)
3549
if policy == POLICY_APPENDPATH:
3550
value = urlutils.join(value, self.extra_path)
3551
# expand section local options right now (since POLICY_APPENDPATH
3552
# will never add options references, it's ok to expand after it).
3554
for is_ref, chunk in iter_option_refs(value):
3556
chunks.append(chunk)
3559
if ref in self.locals:
3560
chunks.append(self.locals[ref])
3562
chunks.append(chunk)
3563
value = ''.join(chunks)
3567
class StartingPathMatcher(SectionMatcher):
3568
"""Select sections for a given location respecting the Store order."""
3570
# FIXME: Both local paths and urls can be used for section names as well as
3571
# ``location`` to stay consistent with ``LocationMatcher`` which itself
3572
# inherited the fuzziness from the previous ``LocationConfig``
3573
# implementation. We probably need to revisit which encoding is allowed for
3574
# both ``location`` and section names and how we normalize
3575
# them. http://pad.lv/85479, http://pad.lv/437009 and http://359320 are
3576
# related too. -- vila 2012-01-04
3578
def __init__(self, store, location):
3579
super(StartingPathMatcher, self).__init__(store)
3580
if location.startswith('file://'):
3581
location = urlutils.local_path_from_url(location)
3582
self.location = location
3584
def get_sections(self):
3585
"""Get all sections matching ``location`` in the store.
3587
The most generic sections are described first in the store, then more
3588
specific ones can be provided for reduced scopes.
3590
The returned section are therefore returned in the reversed order so
3591
the most specific ones can be found first.
3593
location_parts = self.location.rstrip('/').split('/')
3595
# Later sections are more specific, they should be returned first
3596
for _, section in reversed(list(store.get_sections())):
3597
if section.id is None:
3598
# The no-name section is always included if present
3599
yield store, LocationSection(section, self.location)
3601
section_path = section.id
3602
if section_path.startswith('file://'):
3603
# the location is already a local path or URL, convert the
3604
# section id to the same format
3605
section_path = urlutils.local_path_from_url(section_path)
3606
if (self.location.startswith(section_path)
3607
or fnmatch.fnmatch(self.location, section_path)):
3608
section_parts = section_path.rstrip('/').split('/')
3609
extra_path = '/'.join(location_parts[len(section_parts):])
3610
yield store, LocationSection(section, extra_path)
3613
class LocationMatcher(SectionMatcher):
3615
def __init__(self, store, location):
3616
super(LocationMatcher, self).__init__(store)
3617
url, params = urlutils.split_segment_parameters(location)
3618
if location.startswith('file://'):
3619
location = urlutils.local_path_from_url(location)
3620
self.location = location
3621
branch_name = params.get('branch')
3622
if branch_name is None:
3623
self.branch_name = urlutils.basename(self.location)
3625
self.branch_name = urlutils.unescape(branch_name)
3627
def _get_matching_sections(self):
3628
"""Get all sections matching ``location``."""
3629
# We slightly diverge from LocalConfig here by allowing the no-name
3630
# section as the most generic one and the lower priority.
3631
no_name_section = None
3633
# Filter out the no_name_section so _iter_for_location_by_parts can be
3634
# used (it assumes all sections have a name).
3635
for _, section in self.store.get_sections():
3636
if section.id is None:
3637
no_name_section = section
3639
all_sections.append(section)
3640
# Unfortunately _iter_for_location_by_parts deals with section names so
3641
# we have to resync.
3642
filtered_sections = _iter_for_location_by_parts(
3643
[s.id for s in all_sections], self.location)
3644
iter_all_sections = iter(all_sections)
3645
matching_sections = []
3646
if no_name_section is not None:
3647
matching_sections.append(
3648
(0, LocationSection(no_name_section, self.location)))
3649
for section_id, extra_path, length in filtered_sections:
3650
# a section id is unique for a given store so it's safe to take the
3651
# first matching section while iterating. Also, all filtered
3652
# sections are part of 'all_sections' and will always be found
3655
section = iter_all_sections.next()
3656
if section_id == section.id:
3657
section = LocationSection(section, extra_path,
3659
matching_sections.append((length, section))
3661
return matching_sections
3663
def get_sections(self):
3664
# Override the default implementation as we want to change the order
3665
matching_sections = self._get_matching_sections()
3666
# We want the longest (aka more specific) locations first
3667
sections = sorted(matching_sections,
3668
key=lambda (length, section): (length, section.id),
3670
# Sections mentioning 'ignore_parents' restrict the selection
3671
for _, section in sections:
3672
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3673
ignore = section.get('ignore_parents', None)
3674
if ignore is not None:
3675
ignore = ui.bool_from_string(ignore)
3678
# Finally, we have a valid section
3679
yield self.store, section
3682
# FIXME: _shared_stores should be an attribute of a library state once a
3683
# library_state object is always available.
3685
_shared_stores_at_exit_installed = False
3687
class Stack(object):
3688
"""A stack of configurations where an option can be defined"""
3690
def __init__(self, sections_def, store=None, mutable_section_id=None):
3691
"""Creates a stack of sections with an optional store for changes.
3693
:param sections_def: A list of Section or callables that returns an
3694
iterable of Section. This defines the Sections for the Stack and
3695
can be called repeatedly if needed.
3697
:param store: The optional Store where modifications will be
3698
recorded. If none is specified, no modifications can be done.
3700
:param mutable_section_id: The id of the MutableSection where changes
3701
are recorded. This requires the ``store`` parameter to be
3704
self.sections_def = sections_def
3706
self.mutable_section_id = mutable_section_id
3708
def iter_sections(self):
3709
"""Iterate all the defined sections."""
3710
# Ensuring lazy loading is achieved by delaying section matching (which
3711
# implies querying the persistent storage) until it can't be avoided
3712
# anymore by using callables to describe (possibly empty) section
3714
for sections in self.sections_def:
3715
for store, section in sections():
3716
yield store, section
3718
def get(self, name, expand=True, convert=True):
3719
"""Return the *first* option value found in the sections.
3721
This is where we guarantee that sections coming from Store are loaded
3722
lazily: the loading is delayed until we need to either check that an
3723
option exists or get its value, which in turn may require to discover
3724
in which sections it can be defined. Both of these (section and option
3725
existence) require loading the store (even partially).
3727
:param name: The queried option.
3729
:param expand: Whether options references should be expanded.
3731
:param convert: Whether the option value should be converted from
3732
unicode (do nothing for non-registered options).
3734
:returns: The value of the option.
3736
# FIXME: No caching of options nor sections yet -- vila 20110503
3738
found_store = None # Where the option value has been found
3739
# If the option is registered, it may provide additional info about
3742
opt = option_registry.get(name)
3747
def expand_and_convert(val):
3748
# This may need to be called in different contexts if the value is
3749
# None or ends up being None during expansion or conversion.
3752
if isinstance(val, basestring):
3753
val = self._expand_options_in_string(val)
3755
trace.warning('Cannot expand "%s":'
3756
' %s does not support option expansion'
3757
% (name, type(val)))
3759
val = found_store.unquote(val)
3761
val = opt.convert_from_unicode(found_store, val)
3764
# First of all, check if the environment can override the configuration
3766
if opt is not None and opt.override_from_env:
3767
value = opt.get_override()
3768
value = expand_and_convert(value)
3770
for store, section in self.iter_sections():
3771
value = section.get(name)
3772
if value is not None:
3775
value = expand_and_convert(value)
3776
if opt is not None and value is None:
3777
# If the option is registered, it may provide a default value
3778
value = opt.get_default()
3779
value = expand_and_convert(value)
3780
for hook in ConfigHooks['get']:
3781
hook(self, name, value)
3784
def expand_options(self, string, env=None):
3785
"""Expand option references in the string in the configuration context.
3787
:param string: The string containing option(s) to expand.
3789
:param env: An option dict defining additional configuration options or
3790
overriding existing ones.
3792
:returns: The expanded string.
3794
return self._expand_options_in_string(string, env)
3796
def _expand_options_in_string(self, string, env=None, _refs=None):
3797
"""Expand options in the string in the configuration context.
3799
:param string: The string to be expanded.
3801
:param env: An option dict defining additional configuration options or
3802
overriding existing ones.
3804
:param _refs: Private list (FIFO) containing the options being expanded
3807
:returns: The expanded string.
3810
# Not much to expand there
3813
# What references are currently resolved (to detect loops)
3816
# We need to iterate until no more refs appear ({{foo}} will need two
3817
# iterations for example).
3822
for is_ref, chunk in iter_option_refs(result):
3824
chunks.append(chunk)
3829
raise errors.OptionExpansionLoop(string, _refs)
3831
value = self._expand_option(name, env, _refs)
3833
raise errors.ExpandingUnknownOption(name, string)
3834
chunks.append(value)
3836
result = ''.join(chunks)
3839
def _expand_option(self, name, env, _refs):
3840
if env is not None and name in env:
3841
# Special case, values provided in env takes precedence over
3845
value = self.get(name, expand=False, convert=False)
3846
value = self._expand_options_in_string(value, env, _refs)
3849
def _get_mutable_section(self):
3850
"""Get the MutableSection for the Stack.
3852
This is where we guarantee that the mutable section is lazily loaded:
3853
this means we won't load the corresponding store before setting a value
3854
or deleting an option. In practice the store will often be loaded but
3855
this helps catching some programming errors.
3858
section = store.get_mutable_section(self.mutable_section_id)
3859
return store, section
3861
def set(self, name, value):
3862
"""Set a new value for the option."""
3863
store, section = self._get_mutable_section()
3864
section.set(name, store.quote(value))
3865
for hook in ConfigHooks['set']:
3866
hook(self, name, value)
3868
def remove(self, name):
3869
"""Remove an existing option."""
3870
_, section = self._get_mutable_section()
3871
section.remove(name)
3872
for hook in ConfigHooks['remove']:
3876
# Mostly for debugging use
3877
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3879
def _get_overrides(self):
3880
# FIXME: Hack around library_state.initialize never called
3881
if breezy.global_state is not None:
3882
return breezy.global_state.cmdline_overrides.get_sections()
3885
def get_shared_store(self, store, state=None):
3886
"""Get a known shared store.
3888
Store urls uniquely identify them and are used to ensure a single copy
3889
is shared across all users.
3891
:param store: The store known to the caller.
3893
:param state: The library state where the known stores are kept.
3895
:returns: The store received if it's not a known one, an already known
3899
state = breezy.global_state
3901
global _shared_stores_at_exit_installed
3902
stores = _shared_stores
3903
def save_config_changes():
3904
for k, store in stores.iteritems():
3905
store.save_changes()
3906
if not _shared_stores_at_exit_installed:
3907
# FIXME: Ugly hack waiting for library_state to always be
3908
# available. -- vila 20120731
3910
atexit.register(save_config_changes)
3911
_shared_stores_at_exit_installed = True
3913
stores = state.config_stores
3914
url = store.external_url()
3922
class MemoryStack(Stack):
3923
"""A configuration stack defined from a string.
3925
This is mainly intended for tests and requires no disk resources.
3928
def __init__(self, content=None):
3929
"""Create an in-memory stack from a given content.
3931
It uses a single store based on configobj and support reading and
3934
:param content: The initial content of the store. If None, the store is
3935
not loaded and ``_load_from_string`` can and should be used if
3938
store = IniFileStore()
3939
if content is not None:
3940
store._load_from_string(content)
3941
super(MemoryStack, self).__init__(
3942
[store.get_sections], store)
3945
class _CompatibleStack(Stack):
3946
"""Place holder for compatibility with previous design.
3948
This is intended to ease the transition from the Config-based design to the
3949
Stack-based design and should not be used nor relied upon by plugins.
3951
One assumption made here is that the daughter classes will all use Stores
3952
derived from LockableIniFileStore).
3954
It implements set() and remove () by re-loading the store before applying
3955
the modification and saving it.
3957
The long term plan being to implement a single write by store to save
3958
all modifications, this class should not be used in the interim.
3961
def set(self, name, value):
3964
super(_CompatibleStack, self).set(name, value)
3965
# Force a write to persistent storage
3968
def remove(self, name):
3971
super(_CompatibleStack, self).remove(name)
3972
# Force a write to persistent storage
3976
class GlobalStack(Stack):
3977
"""Global options only stack.
3979
The following sections are queried:
3981
* command-line overrides,
3983
* the 'DEFAULT' section in bazaar.conf
3985
This stack will use the ``DEFAULT`` section in bazaar.conf as its
3990
gstore = self.get_shared_store(GlobalStore())
3991
super(GlobalStack, self).__init__(
3992
[self._get_overrides,
3993
NameMatcher(gstore, 'DEFAULT').get_sections],
3994
gstore, mutable_section_id='DEFAULT')
3997
class LocationStack(Stack):
3998
"""Per-location options falling back to global options stack.
4001
The following sections are queried:
4003
* command-line overrides,
4005
* the sections matching ``location`` in ``locations.conf``, the order being
4006
defined by the number of path components in the section glob, higher
4007
numbers first (from most specific section to most generic).
4009
* the 'DEFAULT' section in bazaar.conf
4011
This stack will use the ``location`` section in locations.conf as its
4015
def __init__(self, location):
4016
"""Make a new stack for a location and global configuration.
4018
:param location: A URL prefix to """
4019
lstore = self.get_shared_store(LocationStore())
4020
if location.startswith('file://'):
4021
location = urlutils.local_path_from_url(location)
4022
gstore = self.get_shared_store(GlobalStore())
4023
super(LocationStack, self).__init__(
4024
[self._get_overrides,
4025
LocationMatcher(lstore, location).get_sections,
4026
NameMatcher(gstore, 'DEFAULT').get_sections],
4027
lstore, mutable_section_id=location)
4030
class BranchStack(Stack):
4031
"""Per-location options falling back to branch then global options stack.
4033
The following sections are queried:
4035
* command-line overrides,
4037
* the sections matching ``location`` in ``locations.conf``, the order being
4038
defined by the number of path components in the section glob, higher
4039
numbers first (from most specific section to most generic),
4041
* the no-name section in branch.conf,
4043
* the ``DEFAULT`` section in ``bazaar.conf``.
4045
This stack will use the no-name section in ``branch.conf`` as its
4049
def __init__(self, branch):
4050
lstore = self.get_shared_store(LocationStore())
4051
bstore = branch._get_config_store()
4052
gstore = self.get_shared_store(GlobalStore())
4053
super(BranchStack, self).__init__(
4054
[self._get_overrides,
4055
LocationMatcher(lstore, branch.base).get_sections,
4056
NameMatcher(bstore, None).get_sections,
4057
NameMatcher(gstore, 'DEFAULT').get_sections],
4059
self.branch = branch
4061
def lock_write(self, token=None):
4062
return self.branch.lock_write(token)
4065
return self.branch.unlock()
4068
def set(self, name, value):
4069
super(BranchStack, self).set(name, value)
4070
# Unlocking the branch will trigger a store.save_changes() so the last
4071
# unlock saves all the changes.
4074
def remove(self, name):
4075
super(BranchStack, self).remove(name)
4076
# Unlocking the branch will trigger a store.save_changes() so the last
4077
# unlock saves all the changes.
4080
class RemoteControlStack(Stack):
4081
"""Remote control-only options stack."""
4083
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
4084
# with the stack used for remote bzr dirs. RemoteControlStack only uses
4085
# control.conf and is used only for stack options.
4087
def __init__(self, bzrdir):
4088
cstore = bzrdir._get_config_store()
4089
super(RemoteControlStack, self).__init__(
4090
[NameMatcher(cstore, None).get_sections],
4092
self.bzrdir = bzrdir
4095
class BranchOnlyStack(Stack):
4096
"""Branch-only options stack."""
4098
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
4099
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
4100
# -- vila 2011-12-16
4102
def __init__(self, branch):
4103
bstore = branch._get_config_store()
4104
super(BranchOnlyStack, self).__init__(
4105
[NameMatcher(bstore, None).get_sections],
4107
self.branch = branch
4109
def lock_write(self, token=None):
4110
return self.branch.lock_write(token)
4113
return self.branch.unlock()
4116
def set(self, name, value):
4117
super(BranchOnlyStack, self).set(name, value)
4118
# Force a write to persistent storage
4119
self.store.save_changes()
4122
def remove(self, name):
4123
super(BranchOnlyStack, self).remove(name)
4124
# Force a write to persistent storage
4125
self.store.save_changes()
4128
class cmd_config(commands.Command):
4129
__doc__ = """Display, set or remove a configuration option.
4131
Display the active value for option NAME.
4133
If --all is specified, NAME is interpreted as a regular expression and all
4134
matching options are displayed mentioning their scope and without resolving
4135
option references in the value). The active value that bzr will take into
4136
account is the first one displayed for each option.
4138
If NAME is not given, --all .* is implied (all options are displayed for the
4141
Setting a value is achieved by using NAME=value without spaces. The value
4142
is set in the most relevant scope and can be checked by displaying the
4145
Removing a value is achieved by using --remove NAME.
4148
takes_args = ['name?']
4152
# FIXME: This should be a registry option so that plugins can register
4153
# their own config files (or not) and will also address
4154
# http://pad.lv/788991 -- vila 20101115
4155
commands.Option('scope', help='Reduce the scope to the specified'
4156
' configuration file.',
4158
commands.Option('all',
4159
help='Display all the defined values for the matching options.',
4161
commands.Option('remove', help='Remove the option from'
4162
' the configuration file.'),
4165
_see_also = ['configuration']
4167
@commands.display_command
4168
def run(self, name=None, all=False, directory=None, scope=None,
4170
if directory is None:
4172
directory = directory_service.directories.dereference(directory)
4173
directory = urlutils.normalize_url(directory)
4175
raise errors.BzrError(
4176
'--all and --remove are mutually exclusive.')
4178
# Delete the option in the given scope
4179
self._remove_config_option(name, directory, scope)
4181
# Defaults to all options
4182
self._show_matching_options('.*', directory, scope)
4185
name, value = name.split('=', 1)
4187
# Display the option(s) value(s)
4189
self._show_matching_options(name, directory, scope)
4191
self._show_value(name, directory, scope)
4194
raise errors.BzrError(
4195
'Only one option can be set.')
4196
# Set the option value
4197
self._set_config_option(name, value, directory, scope)
4199
def _get_stack(self, directory, scope=None, write_access=False):
4200
"""Get the configuration stack specified by ``directory`` and ``scope``.
4202
:param directory: Where the configurations are derived from.
4204
:param scope: A specific config to start from.
4206
:param write_access: Whether a write access to the stack will be
4209
# FIXME: scope should allow access to plugin-specific stacks (even
4210
# reduced to the plugin-specific store), related to
4211
# http://pad.lv/788991 -- vila 2011-11-15
4212
if scope is not None:
4213
if scope == 'bazaar':
4214
return GlobalStack()
4215
elif scope == 'locations':
4216
return LocationStack(directory)
4217
elif scope == 'branch':
4219
controldir.ControlDir.open_containing_tree_or_branch(
4222
self.add_cleanup(br.lock_write().unlock)
4223
return br.get_config_stack()
4224
raise errors.NoSuchConfig(scope)
4228
controldir.ControlDir.open_containing_tree_or_branch(
4231
self.add_cleanup(br.lock_write().unlock)
4232
return br.get_config_stack()
4233
except errors.NotBranchError:
4234
return LocationStack(directory)
4236
def _quote_multiline(self, value):
4238
value = '"""' + value + '"""'
4241
def _show_value(self, name, directory, scope):
4242
conf = self._get_stack(directory, scope)
4243
value = conf.get(name, expand=True, convert=False)
4244
if value is not None:
4245
# Quote the value appropriately
4246
value = self._quote_multiline(value)
4247
self.outf.write('%s\n' % (value,))
4249
raise errors.NoSuchConfigOption(name)
4251
def _show_matching_options(self, name, directory, scope):
4252
name = lazy_regex.lazy_compile(name)
4253
# We want any error in the regexp to be raised *now* so we need to
4254
# avoid the delay introduced by the lazy regexp. But, we still do
4255
# want the nicer errors raised by lazy_regex.
4256
name._compile_and_collapse()
4259
conf = self._get_stack(directory, scope)
4260
for store, section in conf.iter_sections():
4261
for oname in section.iter_option_names():
4262
if name.search(oname):
4263
if cur_store_id != store.id:
4264
# Explain where the options are defined
4265
self.outf.write('%s:\n' % (store.id,))
4266
cur_store_id = store.id
4268
if (section.id is not None and cur_section != section.id):
4269
# Display the section id as it appears in the store
4270
# (None doesn't appear by definition)
4271
self.outf.write(' [%s]\n' % (section.id,))
4272
cur_section = section.id
4273
value = section.get(oname, expand=False)
4274
# Quote the value appropriately
4275
value = self._quote_multiline(value)
4276
self.outf.write(' %s = %s\n' % (oname, value))
4278
def _set_config_option(self, name, value, directory, scope):
4279
conf = self._get_stack(directory, scope, write_access=True)
4280
conf.set(name, value)
4281
# Explicitly save the changes
4282
conf.store.save_changes()
4284
def _remove_config_option(self, name, directory, scope):
4286
raise errors.BzrCommandError(
4287
'--remove expects an option to remove.')
4288
conf = self._get_stack(directory, scope, write_access=True)
4291
# Explicitly save the changes
4292
conf.store.save_changes()
4294
raise errors.NoSuchConfigOption(name)
4299
# We need adapters that can build a Store or a Stack in a test context. Test
4300
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4301
# themselves. The builder will receive a test instance and should return a
4302
# ready-to-use store or stack. Plugins that define new store/stacks can also
4303
# register themselves here to be tested against the tests defined in
4304
# breezy.tests.test_config. Note that the builder can be called multiple times
4305
# for the same test.
4307
# The registered object should be a callable receiving a test instance
4308
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4310
test_store_builder_registry = registry.Registry()
4312
# The registered object should be a callable receiving a test instance
4313
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4315
test_stack_builder_registry = registry.Registry()