1508
2140
configobj[name] = value
1510
2142
configobj.setdefault(section, {})[name] = value
2143
for hook in OldConfigHooks['set']:
2144
hook(self, name, value)
2145
self._set_configobj(configobj)
2147
def remove_option(self, option_name, section_name=None):
2148
configobj = self._get_configobj()
2149
if section_name is None:
2150
del configobj[option_name]
2152
del configobj[section_name][option_name]
2153
for hook in OldConfigHooks['remove']:
2154
hook(self, option_name)
1511
2155
self._set_configobj(configobj)
1513
2157
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2159
f = BytesIO(self._transport.get_bytes(self._filename))
2160
for hook in OldConfigHooks['load']:
1516
2163
except errors.NoSuchFile:
2165
except errors.PermissionDenied as e:
2166
trace.warning("Permission denied while trying to open "
2167
"configuration file %s.", urlutils.unescape_for_display(
2168
urlutils.join(self._transport.base, self._filename), "utf-8"))
2171
def _external_url(self):
2172
return urlutils.join(self._transport.external_url(), self._filename)
1519
2174
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2175
f = self._get_config_file()
2178
conf = ConfigObj(f, encoding='utf-8')
2179
except configobj.ConfigObjError as e:
2180
raise errors.ParseConfigError(e.errors, self._external_url())
2181
except UnicodeDecodeError:
2182
raise errors.ConfigContentError(self._external_url())
1522
2187
def _set_configobj(self, configobj):
1523
out_file = StringIO()
2188
out_file = BytesIO()
1524
2189
configobj.write(out_file)
1525
2190
out_file.seek(0)
1526
2191
self._transport.put_file(self._filename, out_file)
2192
for hook in OldConfigHooks['save']:
2196
class Option(object):
2197
"""An option definition.
2199
The option *values* are stored in config files and found in sections.
2201
Here we define various properties about the option itself, its default
2202
value, how to convert it from stores, what to do when invalid values are
2203
encoutered, in which config files it can be stored.
2206
def __init__(self, name, override_from_env=None,
2207
default=None, default_from_env=None,
2208
help=None, from_unicode=None, invalid=None, unquote=True):
2209
"""Build an option definition.
2211
:param name: the name used to refer to the option.
2213
:param override_from_env: A list of environment variables which can
2214
provide override any configuration setting.
2216
:param default: the default value to use when none exist in the config
2217
stores. This is either a string that ``from_unicode`` will convert
2218
into the proper type, a callable returning a unicode string so that
2219
``from_unicode`` can be used on the return value, or a python
2220
object that can be stringified (so only the empty list is supported
2223
:param default_from_env: A list of environment variables which can
2224
provide a default value. 'default' will be used only if none of the
2225
variables specified here are set in the environment.
2227
:param help: a doc string to explain the option to the user.
2229
:param from_unicode: a callable to convert the unicode string
2230
representing the option value in a store or its default value.
2232
:param invalid: the action to be taken when an invalid value is
2233
encountered in a store. This is called only when from_unicode is
2234
invoked to convert a string and returns None or raise ValueError or
2235
TypeError. Accepted values are: None (ignore invalid values),
2236
'warning' (emit a warning), 'error' (emit an error message and
2239
:param unquote: should the unicode value be unquoted before conversion.
2240
This should be used only when the store providing the values cannot
2241
safely unquote them (see http://pad.lv/906897). It is provided so
2242
daughter classes can handle the quoting themselves.
2244
if override_from_env is None:
2245
override_from_env = []
2246
if default_from_env is None:
2247
default_from_env = []
2249
self.override_from_env = override_from_env
2250
# Convert the default value to a unicode string so all values are
2251
# strings internally before conversion (via from_unicode) is attempted.
2254
elif isinstance(default, list):
2255
# Only the empty list is supported
2257
raise AssertionError(
2258
'Only empty lists are supported as default values')
2260
elif isinstance(default, (binary_type, text_type, bool, int, float)):
2261
# Rely on python to convert strings, booleans and integers
2262
self.default = u'%s' % (default,)
2263
elif callable(default):
2264
self.default = default
2266
# other python objects are not expected
2267
raise AssertionError('%r is not supported as a default value'
2269
self.default_from_env = default_from_env
2271
self.from_unicode = from_unicode
2272
self.unquote = unquote
2273
if invalid and invalid not in ('warning', 'error'):
2274
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2275
self.invalid = invalid
2281
def convert_from_unicode(self, store, unicode_value):
2282
if self.unquote and store is not None and unicode_value is not None:
2283
unicode_value = store.unquote(unicode_value)
2284
if self.from_unicode is None or unicode_value is None:
2285
# Don't convert or nothing to convert
2286
return unicode_value
2288
converted = self.from_unicode(unicode_value)
2289
except (ValueError, TypeError):
2290
# Invalid values are ignored
2292
if converted is None and self.invalid is not None:
2293
# The conversion failed
2294
if self.invalid == 'warning':
2295
trace.warning('Value "%s" is not valid for "%s"',
2296
unicode_value, self.name)
2297
elif self.invalid == 'error':
2298
raise errors.ConfigOptionValueError(self.name, unicode_value)
2301
def get_override(self):
2303
for var in self.override_from_env:
2305
# If the env variable is defined, its value takes precedence
2306
value = os.environ[var].decode(osutils.get_user_encoding())
2312
def get_default(self):
2314
for var in self.default_from_env:
2316
# If the env variable is defined, its value is the default one
2317
value = os.environ[var].decode(osutils.get_user_encoding())
2322
# Otherwise, fallback to the value defined at registration
2323
if callable(self.default):
2324
value = self.default()
2325
if not isinstance(value, text_type):
2326
raise AssertionError(
2327
"Callable default value for '%s' should be unicode"
2330
value = self.default
2333
def get_help_topic(self):
2336
def get_help_text(self, additional_see_also=None, plain=True):
2338
from breezy import help_topics
2339
result += help_topics._format_see_also(additional_see_also)
2341
result = help_topics.help_as_plain_text(result)
2345
# Predefined converters to get proper values from store
2347
def bool_from_store(unicode_str):
2348
return ui.bool_from_string(unicode_str)
2351
def int_from_store(unicode_str):
2352
return int(unicode_str)
2355
_unit_suffixes = dict(K=10**3, M=10**6, G=10**9)
2357
def int_SI_from_store(unicode_str):
2358
"""Convert a human readable size in SI units, e.g 10MB into an integer.
2360
Accepted suffixes are K,M,G. It is case-insensitive and may be followed
2361
by a trailing b (i.e. Kb, MB). This is intended to be practical and not
2364
:return Integer, expanded to its base-10 value if a proper SI unit is
2365
found, None otherwise.
2367
regexp = "^(\d+)(([" + ''.join(_unit_suffixes) + "])b?)?$"
2368
p = re.compile(regexp, re.IGNORECASE)
2369
m = p.match(unicode_str)
2372
val, _, unit = m.groups()
2376
coeff = _unit_suffixes[unit.upper()]
2378
raise ValueError(gettext('{0} is not an SI unit.').format(unit))
2383
def float_from_store(unicode_str):
2384
return float(unicode_str)
2387
# Use an empty dict to initialize an empty configobj avoiding all parsing and
2389
_list_converter_config = configobj.ConfigObj(
2390
{}, encoding='utf-8', list_values=True, interpolation=False)
2393
class ListOption(Option):
2395
def __init__(self, name, default=None, default_from_env=None,
2396
help=None, invalid=None):
2397
"""A list Option definition.
2399
This overrides the base class so the conversion from a unicode string
2400
can take quoting into account.
2402
super(ListOption, self).__init__(
2403
name, default=default, default_from_env=default_from_env,
2404
from_unicode=self.from_unicode, help=help,
2405
invalid=invalid, unquote=False)
2407
def from_unicode(self, unicode_str):
2408
if not isinstance(unicode_str, string_types):
2410
# Now inject our string directly as unicode. All callers got their
2411
# value from configobj, so values that need to be quoted are already
2413
_list_converter_config.reset()
2414
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2415
maybe_list = _list_converter_config['list']
2416
if isinstance(maybe_list, string_types):
2418
# A single value, most probably the user forgot (or didn't care
2419
# to add) the final ','
2422
# The empty string, convert to empty list
2425
# We rely on ConfigObj providing us with a list already
2430
class RegistryOption(Option):
2431
"""Option for a choice from a registry."""
2433
def __init__(self, name, registry, default_from_env=None,
2434
help=None, invalid=None):
2435
"""A registry based Option definition.
2437
This overrides the base class so the conversion from a unicode string
2438
can take quoting into account.
2440
super(RegistryOption, self).__init__(
2441
name, default=lambda: unicode(registry.default_key),
2442
default_from_env=default_from_env,
2443
from_unicode=self.from_unicode, help=help,
2444
invalid=invalid, unquote=False)
2445
self.registry = registry
2447
def from_unicode(self, unicode_str):
2448
if not isinstance(unicode_str, string_types):
2451
return self.registry.get(unicode_str)
2454
"Invalid value %s for %s."
2455
"See help for a list of possible values." % (unicode_str,
2460
ret = [self._help, "\n\nThe following values are supported:\n"]
2461
for key in self.registry.keys():
2462
ret.append(" %s - %s\n" % (key, self.registry.get_help(key)))
2466
_option_ref_re = lazy_regex.lazy_compile('({[^\d\W](?:\.\w|-\w|\w)*})')
2467
"""Describes an expandable option reference.
2469
We want to match the most embedded reference first.
2471
I.e. for '{{foo}}' we will get '{foo}',
2472
for '{bar{baz}}' we will get '{baz}'
2475
def iter_option_refs(string):
2476
# Split isolate refs so every other chunk is a ref
2478
for chunk in _option_ref_re.split(string):
2483
class OptionRegistry(registry.Registry):
2484
"""Register config options by their name.
2486
This overrides ``registry.Registry`` to simplify registration by acquiring
2487
some information from the option object itself.
2490
def _check_option_name(self, option_name):
2491
"""Ensures an option name is valid.
2493
:param option_name: The name to validate.
2495
if _option_ref_re.match('{%s}' % option_name) is None:
2496
raise errors.IllegalOptionName(option_name)
2498
def register(self, option):
2499
"""Register a new option to its name.
2501
:param option: The option to register. Its name is used as the key.
2503
self._check_option_name(option.name)
2504
super(OptionRegistry, self).register(option.name, option,
2507
def register_lazy(self, key, module_name, member_name):
2508
"""Register a new option to be loaded on request.
2510
:param key: the key to request the option later. Since the registration
2511
is lazy, it should be provided and match the option name.
2513
:param module_name: the python path to the module. Such as 'os.path'.
2515
:param member_name: the member of the module to return. If empty or
2516
None, get() will return the module itself.
2518
self._check_option_name(key)
2519
super(OptionRegistry, self).register_lazy(key,
2520
module_name, member_name)
2522
def get_help(self, key=None):
2523
"""Get the help text associated with the given key"""
2524
option = self.get(key)
2525
the_help = option.help
2526
if callable(the_help):
2527
return the_help(self, key)
2531
option_registry = OptionRegistry()
2534
# Registered options in lexicographical order
2536
option_registry.register(
2537
Option('append_revisions_only',
2538
default=None, from_unicode=bool_from_store, invalid='warning',
2540
Whether to only append revisions to the mainline.
2542
If this is set to true, then it is not possible to change the
2543
existing mainline of the branch.
2545
option_registry.register(
2546
ListOption('acceptable_keys',
2549
List of GPG key patterns which are acceptable for verification.
2551
option_registry.register(
2552
Option('add.maximum_file_size',
2553
default=u'20MB', from_unicode=int_SI_from_store,
2555
Size above which files should be added manually.
2557
Files below this size are added automatically when using ``bzr add`` without
2560
A negative value means disable the size check.
2562
option_registry.register(
2564
default=None, from_unicode=bool_from_store,
2566
Is the branch bound to ``bound_location``.
2568
If set to "True", the branch should act as a checkout, and push each commit to
2569
the bound_location. This option is normally set by ``bind``/``unbind``.
2571
See also: bound_location.
2573
option_registry.register(
2574
Option('bound_location',
2577
The location that commits should go to when acting as a checkout.
2579
This option is normally set by ``bind``.
2583
option_registry.register(
2584
Option('branch.fetch_tags', default=False, from_unicode=bool_from_store,
2586
Whether revisions associated with tags should be fetched.
2588
option_registry.register_lazy(
2589
'bzr.transform.orphan_policy', 'breezy.transform', 'opt_transform_orphan')
2590
option_registry.register(
2591
Option('bzr.workingtree.worth_saving_limit', default=10,
2592
from_unicode=int_from_store, invalid='warning',
2594
How many changes before saving the dirstate.
2596
-1 means that we will never rewrite the dirstate file for only
2597
stat-cache changes. Regardless of this setting, we will always rewrite
2598
the dirstate file if a file is added/removed/renamed/etc. This flag only
2599
affects the behavior of updating the dirstate file after we notice that
2600
a file has been touched.
2602
option_registry.register(
2603
Option('bugtracker', default=None,
2605
Default bug tracker to use.
2607
This bug tracker will be used for example when marking bugs
2608
as fixed using ``bzr commit --fixes``, if no explicit
2609
bug tracker was specified.
2611
option_registry.register(
2612
Option('check_signatures', default=CHECK_IF_POSSIBLE,
2613
from_unicode=signature_policy_from_unicode,
2615
GPG checking policy.
2617
Possible values: require, ignore, check-available (default)
2619
this option will control whether bzr will require good gpg
2620
signatures, ignore them, or check them if they are
2623
option_registry.register(
2624
Option('child_submit_format',
2625
help='''The preferred format of submissions to this branch.'''))
2626
option_registry.register(
2627
Option('child_submit_to',
2628
help='''Where submissions to this branch are mailed to.'''))
2629
option_registry.register(
2630
Option('create_signatures', default=SIGN_WHEN_REQUIRED,
2631
from_unicode=signing_policy_from_unicode,
2635
Possible values: always, never, when-required (default)
2637
This option controls whether bzr will always create
2638
gpg signatures or not on commits.
2640
option_registry.register(
2641
Option('dirstate.fdatasync', default=True,
2642
from_unicode=bool_from_store,
2644
Flush dirstate changes onto physical disk?
2646
If true (default), working tree metadata changes are flushed through the
2647
OS buffers to physical disk. This is somewhat slower, but means data
2648
should not be lost if the machine crashes. See also repository.fdatasync.
2650
option_registry.register(
2651
ListOption('debug_flags', default=[],
2652
help='Debug flags to activate.'))
2653
option_registry.register(
2654
Option('default_format', default='2a',
2655
help='Format used when creating branches.'))
2656
option_registry.register(
2657
Option('dpush_strict', default=None,
2658
from_unicode=bool_from_store,
2660
The default value for ``dpush --strict``.
2662
If present, defines the ``--strict`` option default value for checking
2663
uncommitted changes before pushing into a different VCS without any
2664
custom bzr metadata.
2666
option_registry.register(
2668
help='The command called to launch an editor to enter a message.'))
2669
option_registry.register(
2670
Option('email', override_from_env=['BRZ_EMAIL'], default=default_email,
2671
help='The users identity'))
2672
option_registry.register(
2673
Option('gpg_signing_command',
2676
Program to use use for creating signatures.
2678
This should support at least the -u and --clearsign options.
2680
option_registry.register(
2681
Option('gpg_signing_key',
2684
GPG key to use for signing.
2686
This defaults to the first key associated with the users email.
2688
option_registry.register(
2689
Option('ignore_missing_extensions', default=False,
2690
from_unicode=bool_from_store,
2692
Control the missing extensions warning display.
2694
The warning will not be emitted if set to True.
2696
option_registry.register(
2698
help='Language to translate messages into.'))
2699
option_registry.register(
2700
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2702
Steal locks that appears to be dead.
2704
If set to True, bzr will check if a lock is supposed to be held by an
2705
active process from the same user on the same machine. If the user and
2706
machine match, but no process with the given PID is active, then bzr
2707
will automatically break the stale lock, and create a new lock for
2709
Otherwise, bzr will prompt as normal to break the lock.
2711
option_registry.register(
2712
Option('log_format', default='long',
2714
Log format to use when displaying revisions.
2716
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2717
may be provided by plugins.
2719
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2721
option_registry.register(
2722
Option('output_encoding',
2723
help= 'Unicode encoding for output'
2724
' (terminal encoding if not specified).'))
2725
option_registry.register(
2726
Option('parent_location',
2729
The location of the default branch for pull or merge.
2731
This option is normally set when creating a branch, the first ``pull`` or by
2732
``pull --remember``.
2734
option_registry.register(
2735
Option('post_commit', default=None,
2737
Post commit functions.
2739
An ordered list of python functions to call, separated by spaces.
2741
Each function takes branch, rev_id as parameters.
2743
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2745
option_registry.register(
2746
Option('public_branch',
2749
A publically-accessible version of this branch.
2751
This implies that the branch setting this option is not publically-accessible.
2752
Used and set by ``bzr send``.
2754
option_registry.register(
2755
Option('push_location',
2758
The location of the default branch for push.
2760
This option is normally set by the first ``push`` or ``push --remember``.
2762
option_registry.register(
2763
Option('push_strict', default=None,
2764
from_unicode=bool_from_store,
2766
The default value for ``push --strict``.
2768
If present, defines the ``--strict`` option default value for checking
2769
uncommitted changes before sending a merge directive.
2771
option_registry.register(
2772
Option('repository.fdatasync', default=True,
2773
from_unicode=bool_from_store,
2775
Flush repository changes onto physical disk?
2777
If true (default), repository changes are flushed through the OS buffers
2778
to physical disk. This is somewhat slower, but means data should not be
2779
lost if the machine crashes. See also dirstate.fdatasync.
2781
option_registry.register_lazy('smtp_server',
2782
'breezy.smtp_connection', 'smtp_server')
2783
option_registry.register_lazy('smtp_password',
2784
'breezy.smtp_connection', 'smtp_password')
2785
option_registry.register_lazy('smtp_username',
2786
'breezy.smtp_connection', 'smtp_username')
2787
option_registry.register(
2788
Option('selftest.timeout',
2790
from_unicode=int_from_store,
2791
help='Abort selftest if one test takes longer than this many seconds',
2794
option_registry.register(
2795
Option('send_strict', default=None,
2796
from_unicode=bool_from_store,
2798
The default value for ``send --strict``.
2800
If present, defines the ``--strict`` option default value for checking
2801
uncommitted changes before sending a bundle.
2804
option_registry.register(
2805
Option('serve.client_timeout',
2806
default=300.0, from_unicode=float_from_store,
2807
help="If we wait for a new request from a client for more than"
2808
" X seconds, consider the client idle, and hangup."))
2809
option_registry.register(
2810
Option('stacked_on_location',
2812
help="""The location where this branch is stacked on."""))
2813
option_registry.register(
2814
Option('submit_branch',
2817
The branch you intend to submit your current work to.
2819
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2820
by the ``submit:`` revision spec.
2822
option_registry.register(
2824
help='''Where submissions from this branch are mailed to.'''))
2825
option_registry.register(
2826
ListOption('suppress_warnings',
2828
help="List of warning classes to suppress."))
2829
option_registry.register(
2830
Option('validate_signatures_in_log', default=False,
2831
from_unicode=bool_from_store, invalid='warning',
2832
help='''Whether to validate signatures in brz log.'''))
2833
option_registry.register_lazy('ssl.ca_certs',
2834
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_ca_certs')
2836
option_registry.register_lazy('ssl.cert_reqs',
2837
'breezy.transport.http._urllib2_wrappers', 'opt_ssl_cert_reqs')
2840
class Section(object):
2841
"""A section defines a dict of option name => value.
2843
This is merely a read-only dict which can add some knowledge about the
2844
options. It is *not* a python dict object though and doesn't try to mimic
2848
def __init__(self, section_id, options):
2849
self.id = section_id
2850
# We re-use the dict-like object received
2851
self.options = options
2853
def get(self, name, default=None, expand=True):
2854
return self.options.get(name, default)
2856
def iter_option_names(self):
2857
for k in self.options.iterkeys():
2861
# Mostly for debugging use
2862
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2865
_NewlyCreatedOption = object()
2866
"""Was the option created during the MutableSection lifetime"""
2867
_DeletedOption = object()
2868
"""Was the option deleted during the MutableSection lifetime"""
2871
class MutableSection(Section):
2872
"""A section allowing changes and keeping track of the original values."""
2874
def __init__(self, section_id, options):
2875
super(MutableSection, self).__init__(section_id, options)
2876
self.reset_changes()
2878
def set(self, name, value):
2879
if name not in self.options:
2880
# This is a new option
2881
self.orig[name] = _NewlyCreatedOption
2882
elif name not in self.orig:
2883
self.orig[name] = self.get(name, None)
2884
self.options[name] = value
2886
def remove(self, name):
2887
if name not in self.orig and name in self.options:
2888
self.orig[name] = self.get(name, None)
2889
del self.options[name]
2891
def reset_changes(self):
2894
def apply_changes(self, dirty, store):
2895
"""Apply option value changes.
2897
``self`` has been reloaded from the persistent storage. ``dirty``
2898
contains the changes made since the previous loading.
2900
:param dirty: the mutable section containing the changes.
2902
:param store: the store containing the section
2904
for k, expected in dirty.orig.iteritems():
2905
actual = dirty.get(k, _DeletedOption)
2906
reloaded = self.get(k, _NewlyCreatedOption)
2907
if actual is _DeletedOption:
2908
if k in self.options:
2912
# Report concurrent updates in an ad-hoc way. This should only
2913
# occurs when different processes try to update the same option
2914
# which is not supported (as in: the config framework is not meant
2915
# to be used as a sharing mechanism).
2916
if expected != reloaded:
2917
if actual is _DeletedOption:
2918
actual = '<DELETED>'
2919
if reloaded is _NewlyCreatedOption:
2920
reloaded = '<CREATED>'
2921
if expected is _NewlyCreatedOption:
2922
expected = '<CREATED>'
2923
# Someone changed the value since we get it from the persistent
2925
trace.warning(gettext(
2926
"Option {0} in section {1} of {2} was changed"
2927
" from {3} to {4}. The {5} value will be saved.".format(
2928
k, self.id, store.external_url(), expected,
2930
# No need to keep track of these changes
2931
self.reset_changes()
2934
class Store(object):
2935
"""Abstract interface to persistent storage for configuration options."""
2937
readonly_section_class = Section
2938
mutable_section_class = MutableSection
2941
# Which sections need to be saved (by section id). We use a dict here
2942
# so the dirty sections can be shared by multiple callers.
2943
self.dirty_sections = {}
2945
def is_loaded(self):
2946
"""Returns True if the Store has been loaded.
2948
This is used to implement lazy loading and ensure the persistent
2949
storage is queried only when needed.
2951
raise NotImplementedError(self.is_loaded)
2954
"""Loads the Store from persistent storage."""
2955
raise NotImplementedError(self.load)
2957
def _load_from_string(self, bytes):
2958
"""Create a store from a string in configobj syntax.
2960
:param bytes: A string representing the file content.
2962
raise NotImplementedError(self._load_from_string)
2965
"""Unloads the Store.
2967
This should make is_loaded() return False. This is used when the caller
2968
knows that the persistent storage has changed or may have change since
2971
raise NotImplementedError(self.unload)
2973
def quote(self, value):
2974
"""Quote a configuration option value for storing purposes.
2976
This allows Stacks to present values as they will be stored.
2980
def unquote(self, value):
2981
"""Unquote a configuration option value into unicode.
2983
The received value is quoted as stored.
2988
"""Saves the Store to persistent storage."""
2989
raise NotImplementedError(self.save)
2991
def _need_saving(self):
2992
for s in self.dirty_sections.values():
2994
# At least one dirty section contains a modification
2998
def apply_changes(self, dirty_sections):
2999
"""Apply changes from dirty sections while checking for coherency.
3001
The Store content is discarded and reloaded from persistent storage to
3002
acquire up-to-date values.
3004
Dirty sections are MutableSection which kept track of the value they
3005
are expected to update.
3007
# We need an up-to-date version from the persistent storage, unload the
3008
# store. The reload will occur when needed (triggered by the first
3009
# get_mutable_section() call below.
3011
# Apply the changes from the preserved dirty sections
3012
for section_id, dirty in dirty_sections.iteritems():
3013
clean = self.get_mutable_section(section_id)
3014
clean.apply_changes(dirty, self)
3015
# Everything is clean now
3016
self.dirty_sections = {}
3018
def save_changes(self):
3019
"""Saves the Store to persistent storage if changes occurred.
3021
Apply the changes recorded in the mutable sections to a store content
3022
refreshed from persistent storage.
3024
raise NotImplementedError(self.save_changes)
3026
def external_url(self):
3027
raise NotImplementedError(self.external_url)
3029
def get_sections(self):
3030
"""Returns an ordered iterable of existing sections.
3032
:returns: An iterable of (store, section).
3034
raise NotImplementedError(self.get_sections)
3036
def get_mutable_section(self, section_id=None):
3037
"""Returns the specified mutable section.
3039
:param section_id: The section identifier
3041
raise NotImplementedError(self.get_mutable_section)
3044
# Mostly for debugging use
3045
return "<config.%s(%s)>" % (self.__class__.__name__,
3046
self.external_url())
3049
class CommandLineStore(Store):
3050
"A store to carry command line overrides for the config options."""
3052
def __init__(self, opts=None):
3053
super(CommandLineStore, self).__init__()
3060
# The dict should be cleared but not replaced so it can be shared.
3061
self.options.clear()
3063
def _from_cmdline(self, overrides):
3064
# Reset before accepting new definitions
3066
for over in overrides:
3068
name, value = over.split('=', 1)
3070
raise errors.BzrCommandError(
3071
gettext("Invalid '%s', should be of the form 'name=value'")
3073
self.options[name] = value
3075
def external_url(self):
3076
# Not an url but it makes debugging easier and is never needed
3080
def get_sections(self):
3081
yield self, self.readonly_section_class(None, self.options)
3084
class IniFileStore(Store):
3085
"""A config Store using ConfigObj for storage.
3087
:ivar _config_obj: Private member to hold the ConfigObj instance used to
3088
serialize/deserialize the config file.
3092
"""A config Store using ConfigObj for storage.
3094
super(IniFileStore, self).__init__()
3095
self._config_obj = None
3097
def is_loaded(self):
3098
return self._config_obj != None
3101
self._config_obj = None
3102
self.dirty_sections = {}
3104
def _load_content(self):
3105
"""Load the config file bytes.
3107
This should be provided by subclasses
3109
:return: Byte string
3111
raise NotImplementedError(self._load_content)
3113
def _save_content(self, content):
3114
"""Save the config file bytes.
3116
This should be provided by subclasses
3118
:param content: Config file bytes to write
3120
raise NotImplementedError(self._save_content)
3123
"""Load the store from the associated file."""
3124
if self.is_loaded():
3126
content = self._load_content()
3127
self._load_from_string(content)
3128
for hook in ConfigHooks['load']:
3131
def _load_from_string(self, bytes):
3132
"""Create a config store from a string.
3134
:param bytes: A string representing the file content.
3136
if self.is_loaded():
3137
raise AssertionError('Already loaded: %r' % (self._config_obj,))
3138
co_input = BytesIO(bytes)
3140
# The config files are always stored utf8-encoded
3141
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3143
except configobj.ConfigObjError as e:
3144
self._config_obj = None
3145
raise errors.ParseConfigError(e.errors, self.external_url())
3146
except UnicodeDecodeError:
3147
raise errors.ConfigContentError(self.external_url())
3149
def save_changes(self):
3150
if not self.is_loaded():
3153
if not self._need_saving():
3155
# Preserve the current version
3156
dirty_sections = dict(self.dirty_sections.items())
3157
self.apply_changes(dirty_sections)
3158
# Save to the persistent storage
3162
if not self.is_loaded():
3166
self._config_obj.write(out)
3167
self._save_content(out.getvalue())
3168
for hook in ConfigHooks['save']:
3171
def get_sections(self):
3172
"""Get the configobj section in the file order.
3174
:returns: An iterable of (store, section).
3176
# We need a loaded store
3179
except (errors.NoSuchFile, errors.PermissionDenied):
3180
# If the file can't be read, there is no sections
3182
cobj = self._config_obj
3184
yield self, self.readonly_section_class(None, cobj)
3185
for section_name in cobj.sections:
3187
self.readonly_section_class(section_name,
3188
cobj[section_name]))
3190
def get_mutable_section(self, section_id=None):
3191
# We need a loaded store
3194
except errors.NoSuchFile:
3195
# The file doesn't exist, let's pretend it was empty
3196
self._load_from_string('')
3197
if section_id in self.dirty_sections:
3198
# We already created a mutable section for this id
3199
return self.dirty_sections[section_id]
3200
if section_id is None:
3201
section = self._config_obj
3203
section = self._config_obj.setdefault(section_id, {})
3204
mutable_section = self.mutable_section_class(section_id, section)
3205
# All mutable sections can become dirty
3206
self.dirty_sections[section_id] = mutable_section
3207
return mutable_section
3209
def quote(self, value):
3211
# configobj conflates automagical list values and quoting
3212
self._config_obj.list_values = True
3213
return self._config_obj._quote(value)
3215
self._config_obj.list_values = False
3217
def unquote(self, value):
3218
if value and isinstance(value, string_types):
3219
# _unquote doesn't handle None nor empty strings nor anything that
3220
# is not a string, really.
3221
value = self._config_obj._unquote(value)
3224
def external_url(self):
3225
# Since an IniFileStore can be used without a file (at least in tests),
3226
# it's better to provide something than raising a NotImplementedError.
3227
# All daughter classes are supposed to provide an implementation
3229
return 'In-Process Store, no URL'
3232
class TransportIniFileStore(IniFileStore):
3233
"""IniFileStore that loads files from a transport.
3235
:ivar transport: The transport object where the config file is located.
3237
:ivar file_name: The config file basename in the transport directory.
3240
def __init__(self, transport, file_name):
3241
"""A Store using a ini file on a Transport
3243
:param transport: The transport object where the config file is located.
3244
:param file_name: The config file basename in the transport directory.
3246
super(TransportIniFileStore, self).__init__()
3247
self.transport = transport
3248
self.file_name = file_name
3250
def _load_content(self):
3252
return self.transport.get_bytes(self.file_name)
3253
except errors.PermissionDenied:
3254
trace.warning("Permission denied while trying to load "
3255
"configuration store %s.", self.external_url())
3258
def _save_content(self, content):
3259
self.transport.put_bytes(self.file_name, content)
3261
def external_url(self):
3262
# FIXME: external_url should really accepts an optional relpath
3263
# parameter (bug #750169) :-/ -- vila 2011-04-04
3264
# The following will do in the interim but maybe we don't want to
3265
# expose a path here but rather a config ID and its associated
3266
# object </hand wawe>.
3267
return urlutils.join(self.transport.external_url(), self.file_name.encode("ascii"))
3270
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3271
# unlockable stores for use with objects that can already ensure the locking
3272
# (think branches). If different stores (not based on ConfigObj) are created,
3273
# they may face the same issue.
3276
class LockableIniFileStore(TransportIniFileStore):
3277
"""A ConfigObjStore using locks on save to ensure store integrity."""
3279
def __init__(self, transport, file_name, lock_dir_name=None):
3280
"""A config Store using ConfigObj for storage.
3282
:param transport: The transport object where the config file is located.
3284
:param file_name: The config file basename in the transport directory.
3286
if lock_dir_name is None:
3287
lock_dir_name = 'lock'
3288
self.lock_dir_name = lock_dir_name
3289
super(LockableIniFileStore, self).__init__(transport, file_name)
3290
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3292
def lock_write(self, token=None):
3293
"""Takes a write lock in the directory containing the config file.
3295
If the directory doesn't exist it is created.
3297
# FIXME: This doesn't check the ownership of the created directories as
3298
# ensure_config_dir_exists does. It should if the transport is local
3299
# -- vila 2011-04-06
3300
self.transport.create_prefix()
3301
return self._lock.lock_write(token)
3306
def break_lock(self):
3307
self._lock.break_lock()
3311
# We need to be able to override the undecorated implementation
3312
self.save_without_locking()
3314
def save_without_locking(self):
3315
super(LockableIniFileStore, self).save()
3318
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
3319
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
3320
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
3322
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
3323
# functions or a registry will make it easier and clearer for tests, focusing
3324
# on the relevant parts of the API that needs testing -- vila 20110503 (based
3325
# on a poolie's remark)
3326
class GlobalStore(LockableIniFileStore):
3327
"""A config store for global options.
3329
There is a single GlobalStore for a given process.
3332
def __init__(self, possible_transports=None):
3333
t = transport.get_transport_from_path(
3334
config_dir(), possible_transports=possible_transports)
3335
super(GlobalStore, self).__init__(t, 'bazaar.conf')
3339
class LocationStore(LockableIniFileStore):
3340
"""A config store for options specific to a location.
3342
There is a single LocationStore for a given process.
3345
def __init__(self, possible_transports=None):
3346
t = transport.get_transport_from_path(
3347
config_dir(), possible_transports=possible_transports)
3348
super(LocationStore, self).__init__(t, 'locations.conf')
3349
self.id = 'locations'
3352
class BranchStore(TransportIniFileStore):
3353
"""A config store for branch options.
3355
There is a single BranchStore for a given branch.
3358
def __init__(self, branch):
3359
super(BranchStore, self).__init__(branch.control_transport,
3361
self.branch = branch
3365
class ControlStore(LockableIniFileStore):
3367
def __init__(self, bzrdir):
3368
super(ControlStore, self).__init__(bzrdir.transport,
3370
lock_dir_name='branch_lock')
3374
class SectionMatcher(object):
3375
"""Select sections into a given Store.
3377
This is intended to be used to postpone getting an iterable of sections
3381
def __init__(self, store):
3384
def get_sections(self):
3385
# This is where we require loading the store so we can see all defined
3387
sections = self.store.get_sections()
3388
# Walk the revisions in the order provided
3389
for store, s in sections:
3393
def match(self, section):
3394
"""Does the proposed section match.
3396
:param section: A Section object.
3398
:returns: True if the section matches, False otherwise.
3400
raise NotImplementedError(self.match)
3403
class NameMatcher(SectionMatcher):
3405
def __init__(self, store, section_id):
3406
super(NameMatcher, self).__init__(store)
3407
self.section_id = section_id
3409
def match(self, section):
3410
return section.id == self.section_id
3413
class LocationSection(Section):
3415
def __init__(self, section, extra_path, branch_name=None):
3416
super(LocationSection, self).__init__(section.id, section.options)
3417
self.extra_path = extra_path
3418
if branch_name is None:
3420
self.locals = {'relpath': extra_path,
3421
'basename': urlutils.basename(extra_path),
3422
'branchname': branch_name}
3424
def get(self, name, default=None, expand=True):
3425
value = super(LocationSection, self).get(name, default)
3426
if value is not None and expand:
3427
policy_name = self.get(name + ':policy', None)
3428
policy = _policy_value.get(policy_name, POLICY_NONE)
3429
if policy == POLICY_APPENDPATH:
3430
value = urlutils.join(value, self.extra_path)
3431
# expand section local options right now (since POLICY_APPENDPATH
3432
# will never add options references, it's ok to expand after it).
3434
for is_ref, chunk in iter_option_refs(value):
3436
chunks.append(chunk)
3439
if ref in self.locals:
3440
chunks.append(self.locals[ref])
3442
chunks.append(chunk)
3443
value = ''.join(chunks)
3447
class StartingPathMatcher(SectionMatcher):
3448
"""Select sections for a given location respecting the Store order."""
3450
# FIXME: Both local paths and urls can be used for section names as well as
3451
# ``location`` to stay consistent with ``LocationMatcher`` which itself
3452
# inherited the fuzziness from the previous ``LocationConfig``
3453
# implementation. We probably need to revisit which encoding is allowed for
3454
# both ``location`` and section names and how we normalize
3455
# them. http://pad.lv/85479, http://pad.lv/437009 and http://359320 are
3456
# related too. -- vila 2012-01-04
3458
def __init__(self, store, location):
3459
super(StartingPathMatcher, self).__init__(store)
3460
if location.startswith('file://'):
3461
location = urlutils.local_path_from_url(location)
3462
self.location = location
3464
def get_sections(self):
3465
"""Get all sections matching ``location`` in the store.
3467
The most generic sections are described first in the store, then more
3468
specific ones can be provided for reduced scopes.
3470
The returned section are therefore returned in the reversed order so
3471
the most specific ones can be found first.
3473
location_parts = self.location.rstrip('/').split('/')
3475
# Later sections are more specific, they should be returned first
3476
for _, section in reversed(list(store.get_sections())):
3477
if section.id is None:
3478
# The no-name section is always included if present
3479
yield store, LocationSection(section, self.location)
3481
section_path = section.id
3482
if section_path.startswith('file://'):
3483
# the location is already a local path or URL, convert the
3484
# section id to the same format
3485
section_path = urlutils.local_path_from_url(section_path)
3486
if (self.location.startswith(section_path)
3487
or fnmatch.fnmatch(self.location, section_path)):
3488
section_parts = section_path.rstrip('/').split('/')
3489
extra_path = '/'.join(location_parts[len(section_parts):])
3490
yield store, LocationSection(section, extra_path)
3493
class LocationMatcher(SectionMatcher):
3495
def __init__(self, store, location):
3496
super(LocationMatcher, self).__init__(store)
3497
url, params = urlutils.split_segment_parameters(location)
3498
if location.startswith('file://'):
3499
location = urlutils.local_path_from_url(location)
3500
self.location = location
3501
branch_name = params.get('branch')
3502
if branch_name is None:
3503
self.branch_name = urlutils.basename(self.location)
3505
self.branch_name = urlutils.unescape(branch_name)
3507
def _get_matching_sections(self):
3508
"""Get all sections matching ``location``."""
3509
# We slightly diverge from LocalConfig here by allowing the no-name
3510
# section as the most generic one and the lower priority.
3511
no_name_section = None
3513
# Filter out the no_name_section so _iter_for_location_by_parts can be
3514
# used (it assumes all sections have a name).
3515
for _, section in self.store.get_sections():
3516
if section.id is None:
3517
no_name_section = section
3519
all_sections.append(section)
3520
# Unfortunately _iter_for_location_by_parts deals with section names so
3521
# we have to resync.
3522
filtered_sections = _iter_for_location_by_parts(
3523
[s.id for s in all_sections], self.location)
3524
iter_all_sections = iter(all_sections)
3525
matching_sections = []
3526
if no_name_section is not None:
3527
matching_sections.append(
3528
(0, LocationSection(no_name_section, self.location)))
3529
for section_id, extra_path, length in filtered_sections:
3530
# a section id is unique for a given store so it's safe to take the
3531
# first matching section while iterating. Also, all filtered
3532
# sections are part of 'all_sections' and will always be found
3535
section = next(iter_all_sections)
3536
if section_id == section.id:
3537
section = LocationSection(section, extra_path,
3539
matching_sections.append((length, section))
3541
return matching_sections
3543
def get_sections(self):
3544
# Override the default implementation as we want to change the order
3545
# We want the longest (aka more specific) locations first
3546
sections = sorted(self._get_matching_sections(),
3547
key=lambda match: (match[0], match[1].id),
3549
# Sections mentioning 'ignore_parents' restrict the selection
3550
for _, section in sections:
3551
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3552
ignore = section.get('ignore_parents', None)
3553
if ignore is not None:
3554
ignore = ui.bool_from_string(ignore)
3557
# Finally, we have a valid section
3558
yield self.store, section
3561
# FIXME: _shared_stores should be an attribute of a library state once a
3562
# library_state object is always available.
3564
_shared_stores_at_exit_installed = False
3566
class Stack(object):
3567
"""A stack of configurations where an option can be defined"""
3569
def __init__(self, sections_def, store=None, mutable_section_id=None):
3570
"""Creates a stack of sections with an optional store for changes.
3572
:param sections_def: A list of Section or callables that returns an
3573
iterable of Section. This defines the Sections for the Stack and
3574
can be called repeatedly if needed.
3576
:param store: The optional Store where modifications will be
3577
recorded. If none is specified, no modifications can be done.
3579
:param mutable_section_id: The id of the MutableSection where changes
3580
are recorded. This requires the ``store`` parameter to be
3583
self.sections_def = sections_def
3585
self.mutable_section_id = mutable_section_id
3587
def iter_sections(self):
3588
"""Iterate all the defined sections."""
3589
# Ensuring lazy loading is achieved by delaying section matching (which
3590
# implies querying the persistent storage) until it can't be avoided
3591
# anymore by using callables to describe (possibly empty) section
3593
for sections in self.sections_def:
3594
for store, section in sections():
3595
yield store, section
3597
def get(self, name, expand=True, convert=True):
3598
"""Return the *first* option value found in the sections.
3600
This is where we guarantee that sections coming from Store are loaded
3601
lazily: the loading is delayed until we need to either check that an
3602
option exists or get its value, which in turn may require to discover
3603
in which sections it can be defined. Both of these (section and option
3604
existence) require loading the store (even partially).
3606
:param name: The queried option.
3608
:param expand: Whether options references should be expanded.
3610
:param convert: Whether the option value should be converted from
3611
unicode (do nothing for non-registered options).
3613
:returns: The value of the option.
3615
# FIXME: No caching of options nor sections yet -- vila 20110503
3617
found_store = None # Where the option value has been found
3618
# If the option is registered, it may provide additional info about
3621
opt = option_registry.get(name)
3626
def expand_and_convert(val):
3627
# This may need to be called in different contexts if the value is
3628
# None or ends up being None during expansion or conversion.
3631
if isinstance(val, string_types):
3632
val = self._expand_options_in_string(val)
3634
trace.warning('Cannot expand "%s":'
3635
' %s does not support option expansion'
3636
% (name, type(val)))
3638
val = found_store.unquote(val)
3640
val = opt.convert_from_unicode(found_store, val)
3643
# First of all, check if the environment can override the configuration
3645
if opt is not None and opt.override_from_env:
3646
value = opt.get_override()
3647
value = expand_and_convert(value)
3649
for store, section in self.iter_sections():
3650
value = section.get(name)
3651
if value is not None:
3654
value = expand_and_convert(value)
3655
if opt is not None and value is None:
3656
# If the option is registered, it may provide a default value
3657
value = opt.get_default()
3658
value = expand_and_convert(value)
3659
for hook in ConfigHooks['get']:
3660
hook(self, name, value)
3663
def expand_options(self, string, env=None):
3664
"""Expand option references in the string in the configuration context.
3666
:param string: The string containing option(s) to expand.
3668
:param env: An option dict defining additional configuration options or
3669
overriding existing ones.
3671
:returns: The expanded string.
3673
return self._expand_options_in_string(string, env)
3675
def _expand_options_in_string(self, string, env=None, _refs=None):
3676
"""Expand options in the string in the configuration context.
3678
:param string: The string to be expanded.
3680
:param env: An option dict defining additional configuration options or
3681
overriding existing ones.
3683
:param _refs: Private list (FIFO) containing the options being expanded
3686
:returns: The expanded string.
3689
# Not much to expand there
3692
# What references are currently resolved (to detect loops)
3695
# We need to iterate until no more refs appear ({{foo}} will need two
3696
# iterations for example).
3701
for is_ref, chunk in iter_option_refs(result):
3703
chunks.append(chunk)
3708
raise errors.OptionExpansionLoop(string, _refs)
3710
value = self._expand_option(name, env, _refs)
3712
raise errors.ExpandingUnknownOption(name, string)
3713
chunks.append(value)
3715
result = ''.join(chunks)
3718
def _expand_option(self, name, env, _refs):
3719
if env is not None and name in env:
3720
# Special case, values provided in env takes precedence over
3724
value = self.get(name, expand=False, convert=False)
3725
value = self._expand_options_in_string(value, env, _refs)
3728
def _get_mutable_section(self):
3729
"""Get the MutableSection for the Stack.
3731
This is where we guarantee that the mutable section is lazily loaded:
3732
this means we won't load the corresponding store before setting a value
3733
or deleting an option. In practice the store will often be loaded but
3734
this helps catching some programming errors.
3737
section = store.get_mutable_section(self.mutable_section_id)
3738
return store, section
3740
def set(self, name, value):
3741
"""Set a new value for the option."""
3742
store, section = self._get_mutable_section()
3743
section.set(name, store.quote(value))
3744
for hook in ConfigHooks['set']:
3745
hook(self, name, value)
3747
def remove(self, name):
3748
"""Remove an existing option."""
3749
_, section = self._get_mutable_section()
3750
section.remove(name)
3751
for hook in ConfigHooks['remove']:
3755
# Mostly for debugging use
3756
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3758
def _get_overrides(self):
3759
# FIXME: Hack around library_state.initialize never called
3760
if breezy.global_state is not None:
3761
return breezy.global_state.cmdline_overrides.get_sections()
3764
def get_shared_store(self, store, state=None):
3765
"""Get a known shared store.
3767
Store urls uniquely identify them and are used to ensure a single copy
3768
is shared across all users.
3770
:param store: The store known to the caller.
3772
:param state: The library state where the known stores are kept.
3774
:returns: The store received if it's not a known one, an already known
3778
state = breezy.global_state
3780
global _shared_stores_at_exit_installed
3781
stores = _shared_stores
3782
def save_config_changes():
3783
for k, store in stores.items():
3784
store.save_changes()
3785
if not _shared_stores_at_exit_installed:
3786
# FIXME: Ugly hack waiting for library_state to always be
3787
# available. -- vila 20120731
3789
atexit.register(save_config_changes)
3790
_shared_stores_at_exit_installed = True
3792
stores = state.config_stores
3793
url = store.external_url()
3801
class MemoryStack(Stack):
3802
"""A configuration stack defined from a string.
3804
This is mainly intended for tests and requires no disk resources.
3807
def __init__(self, content=None):
3808
"""Create an in-memory stack from a given content.
3810
It uses a single store based on configobj and support reading and
3813
:param content: The initial content of the store. If None, the store is
3814
not loaded and ``_load_from_string`` can and should be used if
3817
store = IniFileStore()
3818
if content is not None:
3819
store._load_from_string(content)
3820
super(MemoryStack, self).__init__(
3821
[store.get_sections], store)
3824
class _CompatibleStack(Stack):
3825
"""Place holder for compatibility with previous design.
3827
This is intended to ease the transition from the Config-based design to the
3828
Stack-based design and should not be used nor relied upon by plugins.
3830
One assumption made here is that the daughter classes will all use Stores
3831
derived from LockableIniFileStore).
3833
It implements set() and remove () by re-loading the store before applying
3834
the modification and saving it.
3836
The long term plan being to implement a single write by store to save
3837
all modifications, this class should not be used in the interim.
3840
def set(self, name, value):
3843
super(_CompatibleStack, self).set(name, value)
3844
# Force a write to persistent storage
3847
def remove(self, name):
3850
super(_CompatibleStack, self).remove(name)
3851
# Force a write to persistent storage
3855
class GlobalStack(Stack):
3856
"""Global options only stack.
3858
The following sections are queried:
3860
* command-line overrides,
3862
* the 'DEFAULT' section in bazaar.conf
3864
This stack will use the ``DEFAULT`` section in bazaar.conf as its
3869
gstore = self.get_shared_store(GlobalStore())
3870
super(GlobalStack, self).__init__(
3871
[self._get_overrides,
3872
NameMatcher(gstore, 'DEFAULT').get_sections],
3873
gstore, mutable_section_id='DEFAULT')
3876
class LocationStack(Stack):
3877
"""Per-location options falling back to global options stack.
3880
The following sections are queried:
3882
* command-line overrides,
3884
* the sections matching ``location`` in ``locations.conf``, the order being
3885
defined by the number of path components in the section glob, higher
3886
numbers first (from most specific section to most generic).
3888
* the 'DEFAULT' section in bazaar.conf
3890
This stack will use the ``location`` section in locations.conf as its
3894
def __init__(self, location):
3895
"""Make a new stack for a location and global configuration.
3897
:param location: A URL prefix to """
3898
lstore = self.get_shared_store(LocationStore())
3899
if location.startswith('file://'):
3900
location = urlutils.local_path_from_url(location)
3901
gstore = self.get_shared_store(GlobalStore())
3902
super(LocationStack, self).__init__(
3903
[self._get_overrides,
3904
LocationMatcher(lstore, location).get_sections,
3905
NameMatcher(gstore, 'DEFAULT').get_sections],
3906
lstore, mutable_section_id=location)
3909
class BranchStack(Stack):
3910
"""Per-location options falling back to branch then global options stack.
3912
The following sections are queried:
3914
* command-line overrides,
3916
* the sections matching ``location`` in ``locations.conf``, the order being
3917
defined by the number of path components in the section glob, higher
3918
numbers first (from most specific section to most generic),
3920
* the no-name section in branch.conf,
3922
* the ``DEFAULT`` section in ``bazaar.conf``.
3924
This stack will use the no-name section in ``branch.conf`` as its
3928
def __init__(self, branch):
3929
lstore = self.get_shared_store(LocationStore())
3930
bstore = branch._get_config_store()
3931
gstore = self.get_shared_store(GlobalStore())
3932
super(BranchStack, self).__init__(
3933
[self._get_overrides,
3934
LocationMatcher(lstore, branch.base).get_sections,
3935
NameMatcher(bstore, None).get_sections,
3936
NameMatcher(gstore, 'DEFAULT').get_sections],
3938
self.branch = branch
3940
def lock_write(self, token=None):
3941
return self.branch.lock_write(token)
3944
return self.branch.unlock()
3947
def set(self, name, value):
3948
super(BranchStack, self).set(name, value)
3949
# Unlocking the branch will trigger a store.save_changes() so the last
3950
# unlock saves all the changes.
3953
def remove(self, name):
3954
super(BranchStack, self).remove(name)
3955
# Unlocking the branch will trigger a store.save_changes() so the last
3956
# unlock saves all the changes.
3959
class RemoteControlStack(Stack):
3960
"""Remote control-only options stack."""
3962
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
3963
# with the stack used for remote bzr dirs. RemoteControlStack only uses
3964
# control.conf and is used only for stack options.
3966
def __init__(self, bzrdir):
3967
cstore = bzrdir._get_config_store()
3968
super(RemoteControlStack, self).__init__(
3969
[NameMatcher(cstore, None).get_sections],
3971
self.bzrdir = bzrdir
3974
class BranchOnlyStack(Stack):
3975
"""Branch-only options stack."""
3977
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
3978
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
3979
# -- vila 2011-12-16
3981
def __init__(self, branch):
3982
bstore = branch._get_config_store()
3983
super(BranchOnlyStack, self).__init__(
3984
[NameMatcher(bstore, None).get_sections],
3986
self.branch = branch
3988
def lock_write(self, token=None):
3989
return self.branch.lock_write(token)
3992
return self.branch.unlock()
3995
def set(self, name, value):
3996
super(BranchOnlyStack, self).set(name, value)
3997
# Force a write to persistent storage
3998
self.store.save_changes()
4001
def remove(self, name):
4002
super(BranchOnlyStack, self).remove(name)
4003
# Force a write to persistent storage
4004
self.store.save_changes()
4007
class cmd_config(commands.Command):
4008
__doc__ = """Display, set or remove a configuration option.
4010
Display the active value for option NAME.
4012
If --all is specified, NAME is interpreted as a regular expression and all
4013
matching options are displayed mentioning their scope and without resolving
4014
option references in the value). The active value that bzr will take into
4015
account is the first one displayed for each option.
4017
If NAME is not given, --all .* is implied (all options are displayed for the
4020
Setting a value is achieved by using NAME=value without spaces. The value
4021
is set in the most relevant scope and can be checked by displaying the
4024
Removing a value is achieved by using --remove NAME.
4027
takes_args = ['name?']
4031
# FIXME: This should be a registry option so that plugins can register
4032
# their own config files (or not) and will also address
4033
# http://pad.lv/788991 -- vila 20101115
4034
commands.Option('scope', help='Reduce the scope to the specified'
4035
' configuration file.',
4037
commands.Option('all',
4038
help='Display all the defined values for the matching options.',
4040
commands.Option('remove', help='Remove the option from'
4041
' the configuration file.'),
4044
_see_also = ['configuration']
4046
@commands.display_command
4047
def run(self, name=None, all=False, directory=None, scope=None,
4049
if directory is None:
4051
directory = directory_service.directories.dereference(directory)
4052
directory = urlutils.normalize_url(directory)
4054
raise errors.BzrError(
4055
'--all and --remove are mutually exclusive.')
4057
# Delete the option in the given scope
4058
self._remove_config_option(name, directory, scope)
4060
# Defaults to all options
4061
self._show_matching_options('.*', directory, scope)
4064
name, value = name.split('=', 1)
4066
# Display the option(s) value(s)
4068
self._show_matching_options(name, directory, scope)
4070
self._show_value(name, directory, scope)
4073
raise errors.BzrError(
4074
'Only one option can be set.')
4075
# Set the option value
4076
self._set_config_option(name, value, directory, scope)
4078
def _get_stack(self, directory, scope=None, write_access=False):
4079
"""Get the configuration stack specified by ``directory`` and ``scope``.
4081
:param directory: Where the configurations are derived from.
4083
:param scope: A specific config to start from.
4085
:param write_access: Whether a write access to the stack will be
4088
# FIXME: scope should allow access to plugin-specific stacks (even
4089
# reduced to the plugin-specific store), related to
4090
# http://pad.lv/788991 -- vila 2011-11-15
4091
if scope is not None:
4092
if scope == 'bazaar':
4093
return GlobalStack()
4094
elif scope == 'locations':
4095
return LocationStack(directory)
4096
elif scope == 'branch':
4098
controldir.ControlDir.open_containing_tree_or_branch(
4101
self.add_cleanup(br.lock_write().unlock)
4102
return br.get_config_stack()
4103
raise errors.NoSuchConfig(scope)
4107
controldir.ControlDir.open_containing_tree_or_branch(
4110
self.add_cleanup(br.lock_write().unlock)
4111
return br.get_config_stack()
4112
except errors.NotBranchError:
4113
return LocationStack(directory)
4115
def _quote_multiline(self, value):
4117
value = '"""' + value + '"""'
4120
def _show_value(self, name, directory, scope):
4121
conf = self._get_stack(directory, scope)
4122
value = conf.get(name, expand=True, convert=False)
4123
if value is not None:
4124
# Quote the value appropriately
4125
value = self._quote_multiline(value)
4126
self.outf.write('%s\n' % (value,))
4128
raise errors.NoSuchConfigOption(name)
4130
def _show_matching_options(self, name, directory, scope):
4131
name = lazy_regex.lazy_compile(name)
4132
# We want any error in the regexp to be raised *now* so we need to
4133
# avoid the delay introduced by the lazy regexp. But, we still do
4134
# want the nicer errors raised by lazy_regex.
4135
name._compile_and_collapse()
4138
conf = self._get_stack(directory, scope)
4139
for store, section in conf.iter_sections():
4140
for oname in section.iter_option_names():
4141
if name.search(oname):
4142
if cur_store_id != store.id:
4143
# Explain where the options are defined
4144
self.outf.write('%s:\n' % (store.id,))
4145
cur_store_id = store.id
4147
if (section.id is not None and cur_section != section.id):
4148
# Display the section id as it appears in the store
4149
# (None doesn't appear by definition)
4150
self.outf.write(' [%s]\n' % (section.id,))
4151
cur_section = section.id
4152
value = section.get(oname, expand=False)
4153
# Quote the value appropriately
4154
value = self._quote_multiline(value)
4155
self.outf.write(' %s = %s\n' % (oname, value))
4157
def _set_config_option(self, name, value, directory, scope):
4158
conf = self._get_stack(directory, scope, write_access=True)
4159
conf.set(name, value)
4160
# Explicitly save the changes
4161
conf.store.save_changes()
4163
def _remove_config_option(self, name, directory, scope):
4165
raise errors.BzrCommandError(
4166
'--remove expects an option to remove.')
4167
conf = self._get_stack(directory, scope, write_access=True)
4170
# Explicitly save the changes
4171
conf.store.save_changes()
4173
raise errors.NoSuchConfigOption(name)
4178
# We need adapters that can build a Store or a Stack in a test context. Test
4179
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4180
# themselves. The builder will receive a test instance and should return a
4181
# ready-to-use store or stack. Plugins that define new store/stacks can also
4182
# register themselves here to be tested against the tests defined in
4183
# breezy.tests.test_config. Note that the builder can be called multiple times
4184
# for the same test.
4186
# The registered object should be a callable receiving a test instance
4187
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4189
test_store_builder_registry = registry.Registry()
4191
# The registered object should be a callable receiving a test instance
4192
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4194
test_stack_builder_registry = registry.Registry()