1508
2262
configobj[name] = value
1510
2264
configobj.setdefault(section, {})[name] = value
2265
for hook in OldConfigHooks['set']:
2266
hook(self, name, value)
2267
self._set_configobj(configobj)
2269
def remove_option(self, option_name, section_name=None):
2270
configobj = self._get_configobj()
2271
if section_name is None:
2272
del configobj[option_name]
2274
del configobj[section_name][option_name]
2275
for hook in OldConfigHooks['remove']:
2276
hook(self, option_name)
1511
2277
self._set_configobj(configobj)
1513
2279
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2281
f = BytesIO(self._transport.get_bytes(self._filename))
2282
for hook in OldConfigHooks['load']:
1516
2285
except errors.NoSuchFile:
2287
except errors.PermissionDenied:
2289
"Permission denied while trying to open "
2290
"configuration file %s.",
2291
urlutils.unescape_for_display(
2292
urlutils.join(self._transport.base, self._filename),
2296
def _external_url(self):
2297
return urlutils.join(self._transport.external_url(), self._filename)
1519
2299
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2300
f = self._get_config_file()
2303
conf = ConfigObj(f, encoding='utf-8')
2304
except configobj.ConfigObjError as e:
2305
raise ParseConfigError(e.errors, self._external_url())
2306
except UnicodeDecodeError:
2307
raise ConfigContentError(self._external_url())
1522
2312
def _set_configobj(self, configobj):
1523
out_file = StringIO()
2313
out_file = BytesIO()
1524
2314
configobj.write(out_file)
1525
2315
out_file.seek(0)
1526
2316
self._transport.put_file(self._filename, out_file)
2317
for hook in OldConfigHooks['save']:
2321
class Option(object):
2322
"""An option definition.
2324
The option *values* are stored in config files and found in sections.
2326
Here we define various properties about the option itself, its default
2327
value, how to convert it from stores, what to do when invalid values are
2328
encoutered, in which config files it can be stored.
2331
def __init__(self, name, override_from_env=None,
2332
default=None, default_from_env=None,
2333
help=None, from_unicode=None, invalid=None, unquote=True):
2334
"""Build an option definition.
2336
:param name: the name used to refer to the option.
2338
:param override_from_env: A list of environment variables which can
2339
provide override any configuration setting.
2341
:param default: the default value to use when none exist in the config
2342
stores. This is either a string that ``from_unicode`` will convert
2343
into the proper type, a callable returning a unicode string so that
2344
``from_unicode`` can be used on the return value, or a python
2345
object that can be stringified (so only the empty list is supported
2348
:param default_from_env: A list of environment variables which can
2349
provide a default value. 'default' will be used only if none of the
2350
variables specified here are set in the environment.
2352
:param help: a doc string to explain the option to the user.
2354
:param from_unicode: a callable to convert the unicode string
2355
representing the option value in a store or its default value.
2357
:param invalid: the action to be taken when an invalid value is
2358
encountered in a store. This is called only when from_unicode is
2359
invoked to convert a string and returns None or raise ValueError or
2360
TypeError. Accepted values are: None (ignore invalid values),
2361
'warning' (emit a warning), 'error' (emit an error message and
2364
:param unquote: should the unicode value be unquoted before conversion.
2365
This should be used only when the store providing the values cannot
2366
safely unquote them (see http://pad.lv/906897). It is provided so
2367
daughter classes can handle the quoting themselves.
2369
if override_from_env is None:
2370
override_from_env = []
2371
if default_from_env is None:
2372
default_from_env = []
2374
self.override_from_env = override_from_env
2375
# Convert the default value to a unicode string so all values are
2376
# strings internally before conversion (via from_unicode) is attempted.
2379
elif isinstance(default, list):
2380
# Only the empty list is supported
2382
raise AssertionError(
2383
'Only empty lists are supported as default values')
2385
elif isinstance(default, (binary_type, text_type, bool, int, float)):
2386
# Rely on python to convert strings, booleans and integers
2387
self.default = u'%s' % (default,)
2388
elif callable(default):
2389
self.default = default
2391
# other python objects are not expected
2392
raise AssertionError('%r is not supported as a default value'
2394
self.default_from_env = default_from_env
2396
self.from_unicode = from_unicode
2397
self.unquote = unquote
2398
if invalid and invalid not in ('warning', 'error'):
2399
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2400
self.invalid = invalid
2406
def convert_from_unicode(self, store, unicode_value):
2407
if self.unquote and store is not None and unicode_value is not None:
2408
unicode_value = store.unquote(unicode_value)
2409
if self.from_unicode is None or unicode_value is None:
2410
# Don't convert or nothing to convert
2411
return unicode_value
2413
converted = self.from_unicode(unicode_value)
2414
except (ValueError, TypeError):
2415
# Invalid values are ignored
2417
if converted is None and self.invalid is not None:
2418
# The conversion failed
2419
if self.invalid == 'warning':
2420
trace.warning('Value "%s" is not valid for "%s"',
2421
unicode_value, self.name)
2422
elif self.invalid == 'error':
2423
raise ConfigOptionValueError(self.name, unicode_value)
2426
def get_override(self):
2428
for var in self.override_from_env:
2430
# If the env variable is defined, its value takes precedence
2431
value = os.environ[var]
2433
value = value.decode(osutils.get_user_encoding())
2439
def get_default(self):
2441
for var in self.default_from_env:
2443
# If the env variable is defined, its value is the default one
2444
value = os.environ[var]
2446
value = value.decode(osutils.get_user_encoding())
2451
# Otherwise, fallback to the value defined at registration
2452
if callable(self.default):
2453
value = self.default()
2454
if not isinstance(value, text_type):
2455
raise AssertionError(
2456
"Callable default value for '%s' should be unicode"
2459
value = self.default
2462
def get_help_topic(self):
2465
def get_help_text(self, additional_see_also=None, plain=True):
2467
from breezy import help_topics
2468
result += help_topics._format_see_also(additional_see_also)
2470
result = help_topics.help_as_plain_text(result)
2474
# Predefined converters to get proper values from store
2476
def bool_from_store(unicode_str):
2477
return ui.bool_from_string(unicode_str)
2480
def int_from_store(unicode_str):
2481
return int(unicode_str)
2484
_unit_suffixes = dict(K=10**3, M=10**6, G=10**9)
2487
def int_SI_from_store(unicode_str):
2488
"""Convert a human readable size in SI units, e.g 10MB into an integer.
2490
Accepted suffixes are K,M,G. It is case-insensitive and may be followed
2491
by a trailing b (i.e. Kb, MB). This is intended to be practical and not
2494
:return Integer, expanded to its base-10 value if a proper SI unit is
2495
found, None otherwise.
2497
regexp = "^(\\d+)(([" + ''.join(_unit_suffixes) + "])b?)?$"
2498
p = re.compile(regexp, re.IGNORECASE)
2499
m = p.match(unicode_str)
2502
val, _, unit = m.groups()
2506
coeff = _unit_suffixes[unit.upper()]
2509
gettext('{0} is not an SI unit.').format(unit))
2514
def float_from_store(unicode_str):
2515
return float(unicode_str)
2518
# Use an empty dict to initialize an empty configobj avoiding all parsing and
2520
_list_converter_config = configobj.ConfigObj(
2521
{}, encoding='utf-8', list_values=True, interpolation=False)
2524
class ListOption(Option):
2526
def __init__(self, name, default=None, default_from_env=None,
2527
help=None, invalid=None):
2528
"""A list Option definition.
2530
This overrides the base class so the conversion from a unicode string
2531
can take quoting into account.
2533
super(ListOption, self).__init__(
2534
name, default=default, default_from_env=default_from_env,
2535
from_unicode=self.from_unicode, help=help,
2536
invalid=invalid, unquote=False)
2538
def from_unicode(self, unicode_str):
2539
if not isinstance(unicode_str, string_types):
2541
# Now inject our string directly as unicode. All callers got their
2542
# value from configobj, so values that need to be quoted are already
2544
_list_converter_config.reset()
2545
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2546
maybe_list = _list_converter_config['list']
2547
if isinstance(maybe_list, string_types):
2549
# A single value, most probably the user forgot (or didn't care
2550
# to add) the final ','
2553
# The empty string, convert to empty list
2556
# We rely on ConfigObj providing us with a list already
2561
class RegistryOption(Option):
2562
"""Option for a choice from a registry."""
2564
def __init__(self, name, registry, default_from_env=None,
2565
help=None, invalid=None):
2566
"""A registry based Option definition.
2568
This overrides the base class so the conversion from a unicode string
2569
can take quoting into account.
2571
super(RegistryOption, self).__init__(
2572
name, default=lambda: registry.default_key,
2573
default_from_env=default_from_env,
2574
from_unicode=self.from_unicode, help=help,
2575
invalid=invalid, unquote=False)
2576
self.registry = registry
2578
def from_unicode(self, unicode_str):
2579
if not isinstance(unicode_str, string_types):
2582
return self.registry.get(unicode_str)
2585
"Invalid value %s for %s."
2586
"See help for a list of possible values." % (unicode_str,
2591
ret = [self._help, "\n\nThe following values are supported:\n"]
2592
for key in self.registry.keys():
2593
ret.append(" %s - %s\n" % (key, self.registry.get_help(key)))
2597
_option_ref_re = lazy_regex.lazy_compile('({[^\\d\\W](?:\\.\\w|-\\w|\\w)*})')
2598
"""Describes an expandable option reference.
2600
We want to match the most embedded reference first.
2602
I.e. for '{{foo}}' we will get '{foo}',
2603
for '{bar{baz}}' we will get '{baz}'
2607
def iter_option_refs(string):
2608
# Split isolate refs so every other chunk is a ref
2610
for chunk in _option_ref_re.split(string):
2615
class OptionRegistry(registry.Registry):
2616
"""Register config options by their name.
2618
This overrides ``registry.Registry`` to simplify registration by acquiring
2619
some information from the option object itself.
2622
def _check_option_name(self, option_name):
2623
"""Ensures an option name is valid.
2625
:param option_name: The name to validate.
2627
if _option_ref_re.match('{%s}' % option_name) is None:
2628
raise IllegalOptionName(option_name)
2630
def register(self, option):
2631
"""Register a new option to its name.
2633
:param option: The option to register. Its name is used as the key.
2635
self._check_option_name(option.name)
2636
super(OptionRegistry, self).register(option.name, option,
2639
def register_lazy(self, key, module_name, member_name):
2640
"""Register a new option to be loaded on request.
2642
:param key: the key to request the option later. Since the registration
2643
is lazy, it should be provided and match the option name.
2645
:param module_name: the python path to the module. Such as 'os.path'.
2647
:param member_name: the member of the module to return. If empty or
2648
None, get() will return the module itself.
2650
self._check_option_name(key)
2651
super(OptionRegistry, self).register_lazy(key,
2652
module_name, member_name)
2654
def get_help(self, key=None):
2655
"""Get the help text associated with the given key"""
2656
option = self.get(key)
2657
the_help = option.help
2658
if callable(the_help):
2659
return the_help(self, key)
2663
option_registry = OptionRegistry()
2666
# Registered options in lexicographical order
2668
option_registry.register(
2669
Option('append_revisions_only',
2670
default=None, from_unicode=bool_from_store, invalid='warning',
2672
Whether to only append revisions to the mainline.
2674
If this is set to true, then it is not possible to change the
2675
existing mainline of the branch.
2677
option_registry.register(
2678
ListOption('acceptable_keys',
2681
List of GPG key patterns which are acceptable for verification.
2683
option_registry.register(
2684
Option('add.maximum_file_size',
2685
default=u'20MB', from_unicode=int_SI_from_store,
2687
Size above which files should be added manually.
2689
Files below this size are added automatically when using ``bzr add`` without
2692
A negative value means disable the size check.
2694
option_registry.register(
2696
default=None, from_unicode=bool_from_store,
2698
Is the branch bound to ``bound_location``.
2700
If set to "True", the branch should act as a checkout, and push each commit to
2701
the bound_location. This option is normally set by ``bind``/``unbind``.
2703
See also: bound_location.
2705
option_registry.register(
2706
Option('bound_location',
2709
The location that commits should go to when acting as a checkout.
2711
This option is normally set by ``bind``.
2715
option_registry.register(
2716
Option('branch.fetch_tags', default=False, from_unicode=bool_from_store,
2718
Whether revisions associated with tags should be fetched.
2720
option_registry.register_lazy(
2721
'transform.orphan_policy', 'breezy.transform', 'opt_transform_orphan')
2722
option_registry.register(
2723
Option('bzr.workingtree.worth_saving_limit', default=10,
2724
from_unicode=int_from_store, invalid='warning',
2726
How many changes before saving the dirstate.
2728
-1 means that we will never rewrite the dirstate file for only
2729
stat-cache changes. Regardless of this setting, we will always rewrite
2730
the dirstate file if a file is added/removed/renamed/etc. This flag only
2731
affects the behavior of updating the dirstate file after we notice that
2732
a file has been touched.
2734
option_registry.register(
2735
Option('bugtracker', default=None,
2737
Default bug tracker to use.
2739
This bug tracker will be used for example when marking bugs
2740
as fixed using ``bzr commit --fixes``, if no explicit
2741
bug tracker was specified.
2743
option_registry.register(
2744
Option('check_signatures', default=CHECK_IF_POSSIBLE,
2745
from_unicode=signature_policy_from_unicode,
2747
GPG checking policy.
2749
Possible values: require, ignore, check-available (default)
2751
this option will control whether bzr will require good gpg
2752
signatures, ignore them, or check them if they are
2755
option_registry.register(
2756
Option('child_submit_format',
2757
help='''The preferred format of submissions to this branch.'''))
2758
option_registry.register(
2759
Option('child_submit_to',
2760
help='''Where submissions to this branch are mailed to.'''))
2761
option_registry.register(
2762
Option('create_signatures', default=SIGN_WHEN_REQUIRED,
2763
from_unicode=signing_policy_from_unicode,
2767
Possible values: always, never, when-required (default)
2769
This option controls whether bzr will always create
2770
gpg signatures or not on commits.
2772
option_registry.register(
2773
Option('dirstate.fdatasync', default=True,
2774
from_unicode=bool_from_store,
2776
Flush dirstate changes onto physical disk?
2778
If true (default), working tree metadata changes are flushed through the
2779
OS buffers to physical disk. This is somewhat slower, but means data
2780
should not be lost if the machine crashes. See also repository.fdatasync.
2782
option_registry.register(
2783
ListOption('debug_flags', default=[],
2784
help='Debug flags to activate.'))
2785
option_registry.register(
2786
Option('default_format', default='2a',
2787
help='Format used when creating branches.'))
2788
option_registry.register(
2789
Option('dpush_strict', default=None,
2790
from_unicode=bool_from_store,
2792
The default value for ``dpush --strict``.
2794
If present, defines the ``--strict`` option default value for checking
2795
uncommitted changes before pushing into a different VCS without any
2796
custom bzr metadata.
2798
option_registry.register(
2800
help='The command called to launch an editor to enter a message.'))
2801
option_registry.register(
2802
Option('email', override_from_env=['BRZ_EMAIL'], default=default_email,
2803
help='The users identity'))
2804
option_registry.register(
2805
Option('gpg_signing_key',
2808
GPG key to use for signing.
2810
This defaults to the first key associated with the users email.
2812
option_registry.register(
2814
help='Language to translate messages into.'))
2815
option_registry.register(
2816
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2818
Steal locks that appears to be dead.
2820
If set to True, bzr will check if a lock is supposed to be held by an
2821
active process from the same user on the same machine. If the user and
2822
machine match, but no process with the given PID is active, then bzr
2823
will automatically break the stale lock, and create a new lock for
2825
Otherwise, bzr will prompt as normal to break the lock.
2827
option_registry.register(
2828
Option('log_format', default='long',
2830
Log format to use when displaying revisions.
2832
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2833
may be provided by plugins.
2835
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2837
option_registry.register(
2838
Option('output_encoding',
2839
help='Unicode encoding for output'
2840
' (terminal encoding if not specified).'))
2841
option_registry.register(
2842
Option('parent_location',
2845
The location of the default branch for pull or merge.
2847
This option is normally set when creating a branch, the first ``pull`` or by
2848
``pull --remember``.
2850
option_registry.register(
2851
Option('post_commit', default=None,
2853
Post commit functions.
2855
An ordered list of python functions to call, separated by spaces.
2857
Each function takes branch, rev_id as parameters.
2859
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2861
option_registry.register(
2862
Option('public_branch',
2865
A publically-accessible version of this branch.
2867
This implies that the branch setting this option is not publically-accessible.
2868
Used and set by ``bzr send``.
2870
option_registry.register(
2871
Option('push_location',
2874
The location of the default branch for push.
2876
This option is normally set by the first ``push`` or ``push --remember``.
2878
option_registry.register(
2879
Option('push_strict', default=None,
2880
from_unicode=bool_from_store,
2882
The default value for ``push --strict``.
2884
If present, defines the ``--strict`` option default value for checking
2885
uncommitted changes before sending a merge directive.
2887
option_registry.register(
2888
Option('repository.fdatasync', default=True,
2889
from_unicode=bool_from_store,
2891
Flush repository changes onto physical disk?
2893
If true (default), repository changes are flushed through the OS buffers
2894
to physical disk. This is somewhat slower, but means data should not be
2895
lost if the machine crashes. See also dirstate.fdatasync.
2897
option_registry.register_lazy('smtp_server',
2898
'breezy.smtp_connection', 'smtp_server')
2899
option_registry.register_lazy('smtp_password',
2900
'breezy.smtp_connection', 'smtp_password')
2901
option_registry.register_lazy('smtp_username',
2902
'breezy.smtp_connection', 'smtp_username')
2903
option_registry.register(
2904
Option('selftest.timeout',
2906
from_unicode=int_from_store,
2907
help='Abort selftest if one test takes longer than this many seconds',
2910
option_registry.register(
2911
Option('send_strict', default=None,
2912
from_unicode=bool_from_store,
2914
The default value for ``send --strict``.
2916
If present, defines the ``--strict`` option default value for checking
2917
uncommitted changes before sending a bundle.
2920
option_registry.register(
2921
Option('serve.client_timeout',
2922
default=300.0, from_unicode=float_from_store,
2923
help="If we wait for a new request from a client for more than"
2924
" X seconds, consider the client idle, and hangup."))
2925
option_registry.register(
2926
Option('stacked_on_location',
2928
help="""The location where this branch is stacked on."""))
2929
option_registry.register(
2930
Option('submit_branch',
2933
The branch you intend to submit your current work to.
2935
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2936
by the ``submit:`` revision spec.
2938
option_registry.register(
2940
help='''Where submissions from this branch are mailed to.'''))
2941
option_registry.register(
2942
ListOption('suppress_warnings',
2944
help="List of warning classes to suppress."))
2945
option_registry.register(
2946
Option('validate_signatures_in_log', default=False,
2947
from_unicode=bool_from_store, invalid='warning',
2948
help='''Whether to validate signatures in brz log.'''))
2949
option_registry.register_lazy('ssl.ca_certs',
2950
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_ca_certs')
2952
option_registry.register_lazy('ssl.cert_reqs',
2953
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_cert_reqs')
2956
class Section(object):
2957
"""A section defines a dict of option name => value.
2959
This is merely a read-only dict which can add some knowledge about the
2960
options. It is *not* a python dict object though and doesn't try to mimic
2964
def __init__(self, section_id, options):
2965
self.id = section_id
2966
# We re-use the dict-like object received
2967
self.options = options
2969
def get(self, name, default=None, expand=True):
2970
return self.options.get(name, default)
2972
def iter_option_names(self):
2973
for k in self.options.keys():
2977
# Mostly for debugging use
2978
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2981
_NewlyCreatedOption = object()
2982
"""Was the option created during the MutableSection lifetime"""
2983
_DeletedOption = object()
2984
"""Was the option deleted during the MutableSection lifetime"""
2987
class MutableSection(Section):
2988
"""A section allowing changes and keeping track of the original values."""
2990
def __init__(self, section_id, options):
2991
super(MutableSection, self).__init__(section_id, options)
2992
self.reset_changes()
2994
def set(self, name, value):
2995
if name not in self.options:
2996
# This is a new option
2997
self.orig[name] = _NewlyCreatedOption
2998
elif name not in self.orig:
2999
self.orig[name] = self.get(name, None)
3000
self.options[name] = value
3002
def remove(self, name):
3003
if name not in self.orig and name in self.options:
3004
self.orig[name] = self.get(name, None)
3005
del self.options[name]
3007
def reset_changes(self):
3010
def apply_changes(self, dirty, store):
3011
"""Apply option value changes.
3013
``self`` has been reloaded from the persistent storage. ``dirty``
3014
contains the changes made since the previous loading.
3016
:param dirty: the mutable section containing the changes.
3018
:param store: the store containing the section
3020
for k, expected in dirty.orig.items():
3021
actual = dirty.get(k, _DeletedOption)
3022
reloaded = self.get(k, _NewlyCreatedOption)
3023
if actual is _DeletedOption:
3024
if k in self.options:
3028
# Report concurrent updates in an ad-hoc way. This should only
3029
# occurs when different processes try to update the same option
3030
# which is not supported (as in: the config framework is not meant
3031
# to be used as a sharing mechanism).
3032
if expected != reloaded:
3033
if actual is _DeletedOption:
3034
actual = '<DELETED>'
3035
if reloaded is _NewlyCreatedOption:
3036
reloaded = '<CREATED>'
3037
if expected is _NewlyCreatedOption:
3038
expected = '<CREATED>'
3039
# Someone changed the value since we get it from the persistent
3041
trace.warning(gettext(
3042
"Option {0} in section {1} of {2} was changed"
3043
" from {3} to {4}. The {5} value will be saved.".format(
3044
k, self.id, store.external_url(), expected,
3046
# No need to keep track of these changes
3047
self.reset_changes()
3050
class Store(object):
3051
"""Abstract interface to persistent storage for configuration options."""
3053
readonly_section_class = Section
3054
mutable_section_class = MutableSection
3057
# Which sections need to be saved (by section id). We use a dict here
3058
# so the dirty sections can be shared by multiple callers.
3059
self.dirty_sections = {}
3061
def is_loaded(self):
3062
"""Returns True if the Store has been loaded.
3064
This is used to implement lazy loading and ensure the persistent
3065
storage is queried only when needed.
3067
raise NotImplementedError(self.is_loaded)
3070
"""Loads the Store from persistent storage."""
3071
raise NotImplementedError(self.load)
3073
def _load_from_string(self, bytes):
3074
"""Create a store from a string in configobj syntax.
3076
:param bytes: A string representing the file content.
3078
raise NotImplementedError(self._load_from_string)
3081
"""Unloads the Store.
3083
This should make is_loaded() return False. This is used when the caller
3084
knows that the persistent storage has changed or may have change since
3087
raise NotImplementedError(self.unload)
3089
def quote(self, value):
3090
"""Quote a configuration option value for storing purposes.
3092
This allows Stacks to present values as they will be stored.
3096
def unquote(self, value):
3097
"""Unquote a configuration option value into unicode.
3099
The received value is quoted as stored.
3104
"""Saves the Store to persistent storage."""
3105
raise NotImplementedError(self.save)
3107
def _need_saving(self):
3108
for s in self.dirty_sections.values():
3110
# At least one dirty section contains a modification
3114
def apply_changes(self, dirty_sections):
3115
"""Apply changes from dirty sections while checking for coherency.
3117
The Store content is discarded and reloaded from persistent storage to
3118
acquire up-to-date values.
3120
Dirty sections are MutableSection which kept track of the value they
3121
are expected to update.
3123
# We need an up-to-date version from the persistent storage, unload the
3124
# store. The reload will occur when needed (triggered by the first
3125
# get_mutable_section() call below.
3127
# Apply the changes from the preserved dirty sections
3128
for section_id, dirty in dirty_sections.items():
3129
clean = self.get_mutable_section(section_id)
3130
clean.apply_changes(dirty, self)
3131
# Everything is clean now
3132
self.dirty_sections = {}
3134
def save_changes(self):
3135
"""Saves the Store to persistent storage if changes occurred.
3137
Apply the changes recorded in the mutable sections to a store content
3138
refreshed from persistent storage.
3140
raise NotImplementedError(self.save_changes)
3142
def external_url(self):
3143
raise NotImplementedError(self.external_url)
3145
def get_sections(self):
3146
"""Returns an ordered iterable of existing sections.
3148
:returns: An iterable of (store, section).
3150
raise NotImplementedError(self.get_sections)
3152
def get_mutable_section(self, section_id=None):
3153
"""Returns the specified mutable section.
3155
:param section_id: The section identifier
3157
raise NotImplementedError(self.get_mutable_section)
3160
# Mostly for debugging use
3161
return "<config.%s(%s)>" % (self.__class__.__name__,
3162
self.external_url())
3165
class CommandLineStore(Store):
3166
"A store to carry command line overrides for the config options."""
3168
def __init__(self, opts=None):
3169
super(CommandLineStore, self).__init__()
3176
# The dict should be cleared but not replaced so it can be shared.
3177
self.options.clear()
3179
def _from_cmdline(self, overrides):
3180
# Reset before accepting new definitions
3182
for over in overrides:
3184
name, value = over.split('=', 1)
3186
raise errors.BzrCommandError(
3187
gettext("Invalid '%s', should be of the form 'name=value'")
3189
self.options[name] = value
3191
def external_url(self):
3192
# Not an url but it makes debugging easier and is never needed
3196
def get_sections(self):
3197
yield self, self.readonly_section_class(None, self.options)
3200
class IniFileStore(Store):
3201
"""A config Store using ConfigObj for storage.
3203
:ivar _config_obj: Private member to hold the ConfigObj instance used to
3204
serialize/deserialize the config file.
3208
"""A config Store using ConfigObj for storage.
3210
super(IniFileStore, self).__init__()
3211
self._config_obj = None
3213
def is_loaded(self):
3214
return self._config_obj is not None
3217
self._config_obj = None
3218
self.dirty_sections = {}
3220
def _load_content(self):
3221
"""Load the config file bytes.
3223
This should be provided by subclasses
3225
:return: Byte string
3227
raise NotImplementedError(self._load_content)
3229
def _save_content(self, content):
3230
"""Save the config file bytes.
3232
This should be provided by subclasses
3234
:param content: Config file bytes to write
3236
raise NotImplementedError(self._save_content)
3239
"""Load the store from the associated file."""
3240
if self.is_loaded():
3242
content = self._load_content()
3243
self._load_from_string(content)
3244
for hook in ConfigHooks['load']:
3247
def _load_from_string(self, bytes):
3248
"""Create a config store from a string.
3250
:param bytes: A string representing the file content.
3252
if self.is_loaded():
3253
raise AssertionError('Already loaded: %r' % (self._config_obj,))
3254
co_input = BytesIO(bytes)
3256
# The config files are always stored utf8-encoded
3257
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3259
except configobj.ConfigObjError as e:
3260
self._config_obj = None
3261
raise ParseConfigError(e.errors, self.external_url())
3262
except UnicodeDecodeError:
3263
raise ConfigContentError(self.external_url())
3265
def save_changes(self):
3266
if not self.is_loaded():
3269
if not self._need_saving():
3271
# Preserve the current version
3272
dirty_sections = self.dirty_sections.copy()
3273
self.apply_changes(dirty_sections)
3274
# Save to the persistent storage
3278
if not self.is_loaded():
3282
self._config_obj.write(out)
3283
self._save_content(out.getvalue())
3284
for hook in ConfigHooks['save']:
3287
def get_sections(self):
3288
"""Get the configobj section in the file order.
3290
:returns: An iterable of (store, section).
3292
# We need a loaded store
3295
except (errors.NoSuchFile, errors.PermissionDenied):
3296
# If the file can't be read, there is no sections
3298
cobj = self._config_obj
3300
yield self, self.readonly_section_class(None, cobj)
3301
for section_name in cobj.sections:
3303
self.readonly_section_class(section_name,
3304
cobj[section_name]))
3306
def get_mutable_section(self, section_id=None):
3307
# We need a loaded store
3310
except errors.NoSuchFile:
3311
# The file doesn't exist, let's pretend it was empty
3312
self._load_from_string(b'')
3313
if section_id in self.dirty_sections:
3314
# We already created a mutable section for this id
3315
return self.dirty_sections[section_id]
3316
if section_id is None:
3317
section = self._config_obj
3319
section = self._config_obj.setdefault(section_id, {})
3320
mutable_section = self.mutable_section_class(section_id, section)
3321
# All mutable sections can become dirty
3322
self.dirty_sections[section_id] = mutable_section
3323
return mutable_section
3325
def quote(self, value):
3327
# configobj conflates automagical list values and quoting
3328
self._config_obj.list_values = True
3329
return self._config_obj._quote(value)
3331
self._config_obj.list_values = False
3333
def unquote(self, value):
3334
if value and isinstance(value, string_types):
3335
# _unquote doesn't handle None nor empty strings nor anything that
3336
# is not a string, really.
3337
value = self._config_obj._unquote(value)
3340
def external_url(self):
3341
# Since an IniFileStore can be used without a file (at least in tests),
3342
# it's better to provide something than raising a NotImplementedError.
3343
# All daughter classes are supposed to provide an implementation
3345
return 'In-Process Store, no URL'
3348
class TransportIniFileStore(IniFileStore):
3349
"""IniFileStore that loads files from a transport.
3351
:ivar transport: The transport object where the config file is located.
3353
:ivar file_name: The config file basename in the transport directory.
3356
def __init__(self, transport, file_name):
3357
"""A Store using a ini file on a Transport
3359
:param transport: The transport object where the config file is located.
3360
:param file_name: The config file basename in the transport directory.
3362
super(TransportIniFileStore, self).__init__()
3363
self.transport = transport
3364
self.file_name = file_name
3366
def _load_content(self):
3368
return self.transport.get_bytes(self.file_name)
3369
except errors.PermissionDenied:
3370
trace.warning("Permission denied while trying to load "
3371
"configuration store %s.", self.external_url())
3374
def _save_content(self, content):
3375
self.transport.put_bytes(self.file_name, content)
3377
def external_url(self):
3378
# FIXME: external_url should really accepts an optional relpath
3379
# parameter (bug #750169) :-/ -- vila 2011-04-04
3380
# The following will do in the interim but maybe we don't want to
3381
# expose a path here but rather a config ID and its associated
3382
# object </hand wawe>.
3383
return urlutils.join(
3384
self.transport.external_url(), urlutils.escape(self.file_name))
3387
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3388
# unlockable stores for use with objects that can already ensure the locking
3389
# (think branches). If different stores (not based on ConfigObj) are created,
3390
# they may face the same issue.
3393
class LockableIniFileStore(TransportIniFileStore):
3394
"""A ConfigObjStore using locks on save to ensure store integrity."""
3396
def __init__(self, transport, file_name, lock_dir_name=None):
3397
"""A config Store using ConfigObj for storage.
3399
:param transport: The transport object where the config file is located.
3401
:param file_name: The config file basename in the transport directory.
3403
if lock_dir_name is None:
3404
lock_dir_name = 'lock'
3405
self.lock_dir_name = lock_dir_name
3406
super(LockableIniFileStore, self).__init__(transport, file_name)
3407
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3409
def lock_write(self, token=None):
3410
"""Takes a write lock in the directory containing the config file.
3412
If the directory doesn't exist it is created.
3414
# FIXME: This doesn't check the ownership of the created directories as
3415
# ensure_config_dir_exists does. It should if the transport is local
3416
# -- vila 2011-04-06
3417
self.transport.create_prefix()
3418
token = self._lock.lock_write(token)
3419
return lock.LogicalLockResult(self.unlock, token)
3424
def break_lock(self):
3425
self._lock.break_lock()
3428
with self.lock_write():
3429
# We need to be able to override the undecorated implementation
3430
self.save_without_locking()
3432
def save_without_locking(self):
3433
super(LockableIniFileStore, self).save()
3436
# FIXME: global, breezy, shouldn't that be 'user' instead or even
3437
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
3438
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
3440
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
3441
# functions or a registry will make it easier and clearer for tests, focusing
3442
# on the relevant parts of the API that needs testing -- vila 20110503 (based
3443
# on a poolie's remark)
3444
class GlobalStore(LockableIniFileStore):
3445
"""A config store for global options.
3447
There is a single GlobalStore for a given process.
3450
def __init__(self, possible_transports=None):
3451
(path, kind) = _config_dir()
3452
t = transport.get_transport_from_path(
3453
path, possible_transports=possible_transports)
3454
filename = {'bazaar': 'bazaar.conf', 'breezy': 'breezy.conf'}[kind]
3455
super(GlobalStore, self).__init__(t, filename)
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) or
3607
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 = next(iter_all_sections)
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
# We want the longest (aka more specific) locations first
3666
sections = sorted(self._get_matching_sections(),
3667
key=lambda match: (match[0], match[1].id),
3669
# Sections mentioning 'ignore_parents' restrict the selection
3670
for _, section in sections:
3671
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3672
ignore = section.get('ignore_parents', None)
3673
if ignore is not None:
3674
ignore = ui.bool_from_string(ignore)
3677
# Finally, we have a valid section
3678
yield self.store, section
3681
# FIXME: _shared_stores should be an attribute of a library state once a
3682
# library_state object is always available.
3684
_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, string_types):
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 OptionExpansionLoop(string, _refs)
3831
value = self._expand_option(name, env, _refs)
3833
raise 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
if breezy._global_state is not None:
3881
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
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
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
3900
state = breezy._global_state
3902
global _shared_stores_at_exit_installed
3903
stores = _shared_stores
3905
def save_config_changes():
3906
for k, store in stores.items():
3907
store.save_changes()
3908
if not _shared_stores_at_exit_installed:
3909
# FIXME: Ugly hack waiting for library_state to always be
3910
# available. -- vila 20120731
3912
atexit.register(save_config_changes)
3913
_shared_stores_at_exit_installed = True
3915
stores = state.config_stores
3916
url = store.external_url()
3924
class MemoryStack(Stack):
3925
"""A configuration stack defined from a string.
3927
This is mainly intended for tests and requires no disk resources.
3930
def __init__(self, content=None):
3931
"""Create an in-memory stack from a given content.
3933
It uses a single store based on configobj and support reading and
3936
:param content: The initial content of the store. If None, the store is
3937
not loaded and ``_load_from_string`` can and should be used if
3940
store = IniFileStore()
3941
if content is not None:
3942
store._load_from_string(content)
3943
super(MemoryStack, self).__init__(
3944
[store.get_sections], store)
3947
class _CompatibleStack(Stack):
3948
"""Place holder for compatibility with previous design.
3950
This is intended to ease the transition from the Config-based design to the
3951
Stack-based design and should not be used nor relied upon by plugins.
3953
One assumption made here is that the daughter classes will all use Stores
3954
derived from LockableIniFileStore).
3956
It implements set() and remove () by re-loading the store before applying
3957
the modification and saving it.
3959
The long term plan being to implement a single write by store to save
3960
all modifications, this class should not be used in the interim.
3963
def set(self, name, value):
3966
super(_CompatibleStack, self).set(name, value)
3967
# Force a write to persistent storage
3970
def remove(self, name):
3973
super(_CompatibleStack, self).remove(name)
3974
# Force a write to persistent storage
3978
class GlobalStack(Stack):
3979
"""Global options only stack.
3981
The following sections are queried:
3983
* command-line overrides,
3985
* the 'DEFAULT' section in bazaar.conf
3987
This stack will use the ``DEFAULT`` section in bazaar.conf as its
3992
gstore = self.get_shared_store(GlobalStore())
3993
super(GlobalStack, self).__init__(
3994
[self._get_overrides,
3995
NameMatcher(gstore, 'DEFAULT').get_sections],
3996
gstore, mutable_section_id='DEFAULT')
3999
class LocationStack(Stack):
4000
"""Per-location options falling back to global options stack.
4003
The following sections are queried:
4005
* command-line overrides,
4007
* the sections matching ``location`` in ``locations.conf``, the order being
4008
defined by the number of path components in the section glob, higher
4009
numbers first (from most specific section to most generic).
4011
* the 'DEFAULT' section in bazaar.conf
4013
This stack will use the ``location`` section in locations.conf as its
4017
def __init__(self, location):
4018
"""Make a new stack for a location and global configuration.
4020
:param location: A URL prefix to """
4021
lstore = self.get_shared_store(LocationStore())
4022
if location.startswith('file://'):
4023
location = urlutils.local_path_from_url(location)
4024
gstore = self.get_shared_store(GlobalStore())
4025
super(LocationStack, self).__init__(
4026
[self._get_overrides,
4027
LocationMatcher(lstore, location).get_sections,
4028
NameMatcher(gstore, 'DEFAULT').get_sections],
4029
lstore, mutable_section_id=location)
4032
class BranchStack(Stack):
4033
"""Per-location options falling back to branch then global options stack.
4035
The following sections are queried:
4037
* command-line overrides,
4039
* the sections matching ``location`` in ``locations.conf``, the order being
4040
defined by the number of path components in the section glob, higher
4041
numbers first (from most specific section to most generic),
4043
* the no-name section in branch.conf,
4045
* the ``DEFAULT`` section in ``bazaar.conf``.
4047
This stack will use the no-name section in ``branch.conf`` as its
4051
def __init__(self, branch):
4052
lstore = self.get_shared_store(LocationStore())
4053
bstore = branch._get_config_store()
4054
gstore = self.get_shared_store(GlobalStore())
4055
super(BranchStack, self).__init__(
4056
[self._get_overrides,
4057
LocationMatcher(lstore, branch.base).get_sections,
4058
NameMatcher(bstore, None).get_sections,
4059
NameMatcher(gstore, 'DEFAULT').get_sections],
4061
self.branch = branch
4063
def lock_write(self, token=None):
4064
return self.branch.lock_write(token)
4067
return self.branch.unlock()
4069
def set(self, name, value):
4070
with self.lock_write():
4071
super(BranchStack, self).set(name, value)
4072
# Unlocking the branch will trigger a store.save_changes() so the
4073
# last unlock saves all the changes.
4075
def remove(self, name):
4076
with self.lock_write():
4077
super(BranchStack, self).remove(name)
4078
# Unlocking the branch will trigger a store.save_changes() so the
4079
# last unlock saves all the changes.
4082
class RemoteControlStack(Stack):
4083
"""Remote control-only options stack."""
4085
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
4086
# with the stack used for remote bzr dirs. RemoteControlStack only uses
4087
# control.conf and is used only for stack options.
4089
def __init__(self, bzrdir):
4090
cstore = bzrdir._get_config_store()
4091
super(RemoteControlStack, self).__init__(
4092
[NameMatcher(cstore, None).get_sections],
4094
self.controldir = bzrdir
4097
class BranchOnlyStack(Stack):
4098
"""Branch-only options stack."""
4100
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
4101
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
4102
# -- vila 2011-12-16
4104
def __init__(self, branch):
4105
bstore = branch._get_config_store()
4106
super(BranchOnlyStack, self).__init__(
4107
[NameMatcher(bstore, None).get_sections],
4109
self.branch = branch
4111
def lock_write(self, token=None):
4112
return self.branch.lock_write(token)
4115
return self.branch.unlock()
4117
def set(self, name, value):
4118
with self.lock_write():
4119
super(BranchOnlyStack, self).set(name, value)
4120
# Force a write to persistent storage
4121
self.store.save_changes()
4123
def remove(self, name):
4124
with self.lock_write():
4125
super(BranchOnlyStack, self).remove(name)
4126
# Force a write to persistent storage
4127
self.store.save_changes()
4130
class cmd_config(commands.Command):
4131
__doc__ = """Display, set or remove a configuration option.
4133
Display the active value for option NAME.
4135
If --all is specified, NAME is interpreted as a regular expression and all
4136
matching options are displayed mentioning their scope and without resolving
4137
option references in the value). The active value that bzr will take into
4138
account is the first one displayed for each option.
4140
If NAME is not given, --all .* is implied (all options are displayed for the
4143
Setting a value is achieved by using NAME=value without spaces. The value
4144
is set in the most relevant scope and can be checked by displaying the
4147
Removing a value is achieved by using --remove NAME.
4150
takes_args = ['name?']
4154
# FIXME: This should be a registry option so that plugins can register
4155
# their own config files (or not) and will also address
4156
# http://pad.lv/788991 -- vila 20101115
4157
commands.Option('scope', help='Reduce the scope to the specified'
4158
' configuration file.',
4160
commands.Option('all',
4161
help='Display all the defined values for the matching options.',
4163
commands.Option('remove', help='Remove the option from'
4164
' the configuration file.'),
4167
_see_also = ['configuration']
4169
@commands.display_command
4170
def run(self, name=None, all=False, directory=None, scope=None,
4172
if directory is None:
4174
directory = directory_service.directories.dereference(directory)
4175
directory = urlutils.normalize_url(directory)
4177
raise errors.BzrError(
4178
'--all and --remove are mutually exclusive.')
4180
# Delete the option in the given scope
4181
self._remove_config_option(name, directory, scope)
4183
# Defaults to all options
4184
self._show_matching_options('.*', directory, scope)
4187
name, value = name.split('=', 1)
4189
# Display the option(s) value(s)
4191
self._show_matching_options(name, directory, scope)
4193
self._show_value(name, directory, scope)
4196
raise errors.BzrError(
4197
'Only one option can be set.')
4198
# Set the option value
4199
self._set_config_option(name, value, directory, scope)
4201
def _get_stack(self, directory, scope=None, write_access=False):
4202
"""Get the configuration stack specified by ``directory`` and ``scope``.
4204
:param directory: Where the configurations are derived from.
4206
:param scope: A specific config to start from.
4208
:param write_access: Whether a write access to the stack will be
4211
# FIXME: scope should allow access to plugin-specific stacks (even
4212
# reduced to the plugin-specific store), related to
4213
# http://pad.lv/788991 -- vila 2011-11-15
4214
if scope is not None:
4215
if scope == 'breezy':
4216
return GlobalStack()
4217
elif scope == 'locations':
4218
return LocationStack(directory)
4219
elif scope == 'branch':
4221
controldir.ControlDir.open_containing_tree_or_branch(
4224
self.add_cleanup(br.lock_write().unlock)
4225
return br.get_config_stack()
4226
raise NoSuchConfig(scope)
4230
controldir.ControlDir.open_containing_tree_or_branch(
4233
self.add_cleanup(br.lock_write().unlock)
4234
return br.get_config_stack()
4235
except errors.NotBranchError:
4236
return LocationStack(directory)
4238
def _quote_multiline(self, value):
4240
value = '"""' + value + '"""'
4243
def _show_value(self, name, directory, scope):
4244
conf = self._get_stack(directory, scope)
4245
value = conf.get(name, expand=True, convert=False)
4246
if value is not None:
4247
# Quote the value appropriately
4248
value = self._quote_multiline(value)
4249
self.outf.write('%s\n' % (value,))
4251
raise NoSuchConfigOption(name)
4253
def _show_matching_options(self, name, directory, scope):
4254
name = lazy_regex.lazy_compile(name)
4255
# We want any error in the regexp to be raised *now* so we need to
4256
# avoid the delay introduced by the lazy regexp. But, we still do
4257
# want the nicer errors raised by lazy_regex.
4258
name._compile_and_collapse()
4261
conf = self._get_stack(directory, scope)
4262
for store, section in conf.iter_sections():
4263
for oname in section.iter_option_names():
4264
if name.search(oname):
4265
if cur_store_id != store.id:
4266
# Explain where the options are defined
4267
self.outf.write('%s:\n' % (store.id,))
4268
cur_store_id = store.id
4270
if (section.id is not None and cur_section != section.id):
4271
# Display the section id as it appears in the store
4272
# (None doesn't appear by definition)
4273
self.outf.write(' [%s]\n' % (section.id,))
4274
cur_section = section.id
4275
value = section.get(oname, expand=False)
4276
# Quote the value appropriately
4277
value = self._quote_multiline(value)
4278
self.outf.write(' %s = %s\n' % (oname, value))
4280
def _set_config_option(self, name, value, directory, scope):
4281
conf = self._get_stack(directory, scope, write_access=True)
4282
conf.set(name, value)
4283
# Explicitly save the changes
4284
conf.store.save_changes()
4286
def _remove_config_option(self, name, directory, scope):
4288
raise errors.BzrCommandError(
4289
'--remove expects an option to remove.')
4290
conf = self._get_stack(directory, scope, write_access=True)
4293
# Explicitly save the changes
4294
conf.store.save_changes()
4296
raise NoSuchConfigOption(name)
4301
# We need adapters that can build a Store or a Stack in a test context. Test
4302
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4303
# themselves. The builder will receive a test instance and should return a
4304
# ready-to-use store or stack. Plugins that define new store/stacks can also
4305
# register themselves here to be tested against the tests defined in
4306
# breezy.tests.test_config. Note that the builder can be called multiple times
4307
# for the same test.
4309
# The registered object should be a callable receiving a test instance
4310
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4312
test_store_builder_registry = registry.Registry()
4314
# The registered object should be a callable receiving a test instance
4315
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4317
test_stack_builder_registry = registry.Registry()