1508
2003
configobj[name] = value
1510
2005
configobj.setdefault(section, {})[name] = value
2006
for hook in OldConfigHooks['set']:
2007
hook(self, name, value)
2008
self._set_configobj(configobj)
2010
def remove_option(self, option_name, section_name=None):
2011
configobj = self._get_configobj()
2012
if section_name is None:
2013
del configobj[option_name]
2015
del configobj[section_name][option_name]
2016
for hook in OldConfigHooks['remove']:
2017
hook(self, option_name)
1511
2018
self._set_configobj(configobj)
1513
2020
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2022
f = BytesIO(self._transport.get_bytes(self._filename))
2023
for hook in OldConfigHooks['load']:
1516
2026
except errors.NoSuchFile:
2028
except errors.PermissionDenied:
2030
"Permission denied while trying to open "
2031
"configuration file %s.",
2032
urlutils.unescape_for_display(
2033
urlutils.join(self._transport.base, self._filename),
2037
def _external_url(self):
2038
return urlutils.join(self._transport.external_url(), self._filename)
1519
2040
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2041
f = self._get_config_file()
2044
conf = ConfigObj(f, encoding='utf-8')
2045
except configobj.ConfigObjError as e:
2046
raise ParseConfigError(e.errors, self._external_url())
2047
except UnicodeDecodeError:
2048
raise ConfigContentError(self._external_url())
1522
2053
def _set_configobj(self, configobj):
1523
out_file = StringIO()
2054
out_file = BytesIO()
1524
2055
configobj.write(out_file)
1525
2056
out_file.seek(0)
1526
2057
self._transport.put_file(self._filename, out_file)
2058
for hook in OldConfigHooks['save']:
2062
class Option(object):
2063
"""An option definition.
2065
The option *values* are stored in config files and found in sections.
2067
Here we define various properties about the option itself, its default
2068
value, how to convert it from stores, what to do when invalid values are
2069
encoutered, in which config files it can be stored.
2072
def __init__(self, name, override_from_env=None,
2073
default=None, default_from_env=None,
2074
help=None, from_unicode=None, invalid=None, unquote=True):
2075
"""Build an option definition.
2077
:param name: the name used to refer to the option.
2079
:param override_from_env: A list of environment variables which can
2080
provide override any configuration setting.
2082
:param default: the default value to use when none exist in the config
2083
stores. This is either a string that ``from_unicode`` will convert
2084
into the proper type, a callable returning a unicode string so that
2085
``from_unicode`` can be used on the return value, or a python
2086
object that can be stringified (so only the empty list is supported
2089
:param default_from_env: A list of environment variables which can
2090
provide a default value. 'default' will be used only if none of the
2091
variables specified here are set in the environment.
2093
:param help: a doc string to explain the option to the user.
2095
:param from_unicode: a callable to convert the unicode string
2096
representing the option value in a store or its default value.
2098
:param invalid: the action to be taken when an invalid value is
2099
encountered in a store. This is called only when from_unicode is
2100
invoked to convert a string and returns None or raise ValueError or
2101
TypeError. Accepted values are: None (ignore invalid values),
2102
'warning' (emit a warning), 'error' (emit an error message and
2105
:param unquote: should the unicode value be unquoted before conversion.
2106
This should be used only when the store providing the values cannot
2107
safely unquote them (see http://pad.lv/906897). It is provided so
2108
daughter classes can handle the quoting themselves.
2110
if override_from_env is None:
2111
override_from_env = []
2112
if default_from_env is None:
2113
default_from_env = []
2115
self.override_from_env = override_from_env
2116
# Convert the default value to a unicode string so all values are
2117
# strings internally before conversion (via from_unicode) is attempted.
2120
elif isinstance(default, list):
2121
# Only the empty list is supported
2123
raise AssertionError(
2124
'Only empty lists are supported as default values')
2126
elif isinstance(default, (binary_type, text_type, bool, int, float)):
2127
# Rely on python to convert strings, booleans and integers
2128
self.default = u'%s' % (default,)
2129
elif callable(default):
2130
self.default = default
2132
# other python objects are not expected
2133
raise AssertionError('%r is not supported as a default value'
2135
self.default_from_env = default_from_env
2137
self.from_unicode = from_unicode
2138
self.unquote = unquote
2139
if invalid and invalid not in ('warning', 'error'):
2140
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2141
self.invalid = invalid
2147
def convert_from_unicode(self, store, unicode_value):
2148
if self.unquote and store is not None and unicode_value is not None:
2149
unicode_value = store.unquote(unicode_value)
2150
if self.from_unicode is None or unicode_value is None:
2151
# Don't convert or nothing to convert
2152
return unicode_value
2154
converted = self.from_unicode(unicode_value)
2155
except (ValueError, TypeError):
2156
# Invalid values are ignored
2158
if converted is None and self.invalid is not None:
2159
# The conversion failed
2160
if self.invalid == 'warning':
2161
trace.warning('Value "%s" is not valid for "%s"',
2162
unicode_value, self.name)
2163
elif self.invalid == 'error':
2164
raise ConfigOptionValueError(self.name, unicode_value)
2167
def get_override(self):
2169
for var in self.override_from_env:
2171
# If the env variable is defined, its value takes precedence
2172
value = os.environ[var]
2174
value = value.decode(osutils.get_user_encoding())
2180
def get_default(self):
2182
for var in self.default_from_env:
2184
# If the env variable is defined, its value is the default one
2185
value = os.environ[var]
2187
value = value.decode(osutils.get_user_encoding())
2192
# Otherwise, fallback to the value defined at registration
2193
if callable(self.default):
2194
value = self.default()
2195
if not isinstance(value, text_type):
2196
raise AssertionError(
2197
"Callable default value for '%s' should be unicode"
2200
value = self.default
2203
def get_help_topic(self):
2206
def get_help_text(self, additional_see_also=None, plain=True):
2208
from breezy import help_topics
2209
result += help_topics._format_see_also(additional_see_also)
2211
result = help_topics.help_as_plain_text(result)
2215
# Predefined converters to get proper values from store
2217
def bool_from_store(unicode_str):
2218
return ui.bool_from_string(unicode_str)
2221
def int_from_store(unicode_str):
2222
return int(unicode_str)
2225
_unit_suffixes = dict(K=10**3, M=10**6, G=10**9)
2228
def int_SI_from_store(unicode_str):
2229
"""Convert a human readable size in SI units, e.g 10MB into an integer.
2231
Accepted suffixes are K,M,G. It is case-insensitive and may be followed
2232
by a trailing b (i.e. Kb, MB). This is intended to be practical and not
2235
:return Integer, expanded to its base-10 value if a proper SI unit is
2236
found, None otherwise.
2238
regexp = "^(\\d+)(([" + ''.join(_unit_suffixes) + "])b?)?$"
2239
p = re.compile(regexp, re.IGNORECASE)
2240
m = p.match(unicode_str)
2243
val, _, unit = m.groups()
2247
coeff = _unit_suffixes[unit.upper()]
2250
gettext('{0} is not an SI unit.').format(unit))
2255
def float_from_store(unicode_str):
2256
return float(unicode_str)
2259
# Use an empty dict to initialize an empty configobj avoiding all parsing and
2261
_list_converter_config = configobj.ConfigObj(
2262
{}, encoding='utf-8', list_values=True, interpolation=False)
2265
class ListOption(Option):
2267
def __init__(self, name, default=None, default_from_env=None,
2268
help=None, invalid=None):
2269
"""A list Option definition.
2271
This overrides the base class so the conversion from a unicode string
2272
can take quoting into account.
2274
super(ListOption, self).__init__(
2275
name, default=default, default_from_env=default_from_env,
2276
from_unicode=self.from_unicode, help=help,
2277
invalid=invalid, unquote=False)
2279
def from_unicode(self, unicode_str):
2280
if not isinstance(unicode_str, string_types):
2282
# Now inject our string directly as unicode. All callers got their
2283
# value from configobj, so values that need to be quoted are already
2285
_list_converter_config.reset()
2286
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2287
maybe_list = _list_converter_config['list']
2288
if isinstance(maybe_list, string_types):
2290
# A single value, most probably the user forgot (or didn't care
2291
# to add) the final ','
2294
# The empty string, convert to empty list
2297
# We rely on ConfigObj providing us with a list already
2302
class RegistryOption(Option):
2303
"""Option for a choice from a registry."""
2305
def __init__(self, name, registry, default_from_env=None,
2306
help=None, invalid=None):
2307
"""A registry based Option definition.
2309
This overrides the base class so the conversion from a unicode string
2310
can take quoting into account.
2312
super(RegistryOption, self).__init__(
2313
name, default=lambda: registry.default_key,
2314
default_from_env=default_from_env,
2315
from_unicode=self.from_unicode, help=help,
2316
invalid=invalid, unquote=False)
2317
self.registry = registry
2319
def from_unicode(self, unicode_str):
2320
if not isinstance(unicode_str, string_types):
2323
return self.registry.get(unicode_str)
2326
"Invalid value %s for %s."
2327
"See help for a list of possible values." % (unicode_str,
2332
ret = [self._help, "\n\nThe following values are supported:\n"]
2333
for key in self.registry.keys():
2334
ret.append(" %s - %s\n" % (key, self.registry.get_help(key)))
2338
_option_ref_re = lazy_regex.lazy_compile('({[^\\d\\W](?:\\.\\w|-\\w|\\w)*})')
2339
"""Describes an expandable option reference.
2341
We want to match the most embedded reference first.
2343
I.e. for '{{foo}}' we will get '{foo}',
2344
for '{bar{baz}}' we will get '{baz}'
2348
def iter_option_refs(string):
2349
# Split isolate refs so every other chunk is a ref
2351
for chunk in _option_ref_re.split(string):
2356
class OptionRegistry(registry.Registry):
2357
"""Register config options by their name.
2359
This overrides ``registry.Registry`` to simplify registration by acquiring
2360
some information from the option object itself.
2363
def _check_option_name(self, option_name):
2364
"""Ensures an option name is valid.
2366
:param option_name: The name to validate.
2368
if _option_ref_re.match('{%s}' % option_name) is None:
2369
raise IllegalOptionName(option_name)
2371
def register(self, option):
2372
"""Register a new option to its name.
2374
:param option: The option to register. Its name is used as the key.
2376
self._check_option_name(option.name)
2377
super(OptionRegistry, self).register(option.name, option,
2380
def register_lazy(self, key, module_name, member_name):
2381
"""Register a new option to be loaded on request.
2383
:param key: the key to request the option later. Since the registration
2384
is lazy, it should be provided and match the option name.
2386
:param module_name: the python path to the module. Such as 'os.path'.
2388
:param member_name: the member of the module to return. If empty or
2389
None, get() will return the module itself.
2391
self._check_option_name(key)
2392
super(OptionRegistry, self).register_lazy(key,
2393
module_name, member_name)
2395
def get_help(self, key=None):
2396
"""Get the help text associated with the given key"""
2397
option = self.get(key)
2398
the_help = option.help
2399
if callable(the_help):
2400
return the_help(self, key)
2404
option_registry = OptionRegistry()
2407
# Registered options in lexicographical order
2409
option_registry.register(
2410
Option('append_revisions_only',
2411
default=None, from_unicode=bool_from_store, invalid='warning',
2413
Whether to only append revisions to the mainline.
2415
If this is set to true, then it is not possible to change the
2416
existing mainline of the branch.
2418
option_registry.register(
2419
ListOption('acceptable_keys',
2422
List of GPG key patterns which are acceptable for verification.
2424
option_registry.register(
2425
Option('add.maximum_file_size',
2426
default=u'20MB', from_unicode=int_SI_from_store,
2428
Size above which files should be added manually.
2430
Files below this size are added automatically when using ``bzr add`` without
2433
A negative value means disable the size check.
2435
option_registry.register(
2437
default=None, from_unicode=bool_from_store,
2439
Is the branch bound to ``bound_location``.
2441
If set to "True", the branch should act as a checkout, and push each commit to
2442
the bound_location. This option is normally set by ``bind``/``unbind``.
2444
See also: bound_location.
2446
option_registry.register(
2447
Option('bound_location',
2450
The location that commits should go to when acting as a checkout.
2452
This option is normally set by ``bind``.
2456
option_registry.register(
2457
Option('branch.fetch_tags', default=False, from_unicode=bool_from_store,
2459
Whether revisions associated with tags should be fetched.
2461
option_registry.register_lazy(
2462
'transform.orphan_policy', 'breezy.transform', 'opt_transform_orphan')
2463
option_registry.register(
2464
Option('bzr.workingtree.worth_saving_limit', default=10,
2465
from_unicode=int_from_store, invalid='warning',
2467
How many changes before saving the dirstate.
2469
-1 means that we will never rewrite the dirstate file for only
2470
stat-cache changes. Regardless of this setting, we will always rewrite
2471
the dirstate file if a file is added/removed/renamed/etc. This flag only
2472
affects the behavior of updating the dirstate file after we notice that
2473
a file has been touched.
2475
option_registry.register(
2476
Option('bugtracker', default=None,
2478
Default bug tracker to use.
2480
This bug tracker will be used for example when marking bugs
2481
as fixed using ``bzr commit --fixes``, if no explicit
2482
bug tracker was specified.
2484
option_registry.register(
2485
Option('calculate_revnos', default=True,
2486
from_unicode=bool_from_store,
2488
Calculate revision numbers if they are not known.
2490
Always show revision numbers, even for branch formats that don't store them
2491
natively (such as Git). Calculating the revision number requires traversing
2492
the left hand ancestry of the branch and can be slow on very large branches.
2494
option_registry.register(
2495
Option('check_signatures', default=CHECK_IF_POSSIBLE,
2496
from_unicode=signature_policy_from_unicode,
2498
GPG checking policy.
2500
Possible values: require, ignore, check-available (default)
2502
this option will control whether bzr will require good gpg
2503
signatures, ignore them, or check them if they are
2506
option_registry.register(
2507
Option('child_submit_format',
2508
help='''The preferred format of submissions to this branch.'''))
2509
option_registry.register(
2510
Option('child_submit_to',
2511
help='''Where submissions to this branch are mailed to.'''))
2512
option_registry.register(
2513
Option('create_signatures', default=SIGN_WHEN_REQUIRED,
2514
from_unicode=signing_policy_from_unicode,
2518
Possible values: always, never, when-required (default)
2520
This option controls whether bzr will always create
2521
gpg signatures or not on commits.
2523
option_registry.register(
2524
Option('dirstate.fdatasync', default=True,
2525
from_unicode=bool_from_store,
2527
Flush dirstate changes onto physical disk?
2529
If true (default), working tree metadata changes are flushed through the
2530
OS buffers to physical disk. This is somewhat slower, but means data
2531
should not be lost if the machine crashes. See also repository.fdatasync.
2533
option_registry.register(
2534
ListOption('debug_flags', default=[],
2535
help='Debug flags to activate.'))
2536
option_registry.register(
2537
Option('default_format', default='2a',
2538
help='Format used when creating branches.'))
2539
option_registry.register(
2541
help='The command called to launch an editor to enter a message.'))
2542
option_registry.register(
2543
Option('email', override_from_env=['BRZ_EMAIL'],
2544
default=bedding.default_email, help='The users identity'))
2545
option_registry.register(
2546
Option('gpg_signing_key',
2549
GPG key to use for signing.
2551
This defaults to the first key associated with the users email.
2553
option_registry.register(
2555
help='Language to translate messages into.'))
2556
option_registry.register(
2557
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2559
Steal locks that appears to be dead.
2561
If set to True, bzr will check if a lock is supposed to be held by an
2562
active process from the same user on the same machine. If the user and
2563
machine match, but no process with the given PID is active, then bzr
2564
will automatically break the stale lock, and create a new lock for
2566
Otherwise, bzr will prompt as normal to break the lock.
2568
option_registry.register(
2569
Option('log_format', default='long',
2571
Log format to use when displaying revisions.
2573
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2574
may be provided by plugins.
2576
option_registry.register_lazy('mail_client', 'breezy.mail_client',
2578
option_registry.register(
2579
Option('output_encoding',
2580
help='Unicode encoding for output'
2581
' (terminal encoding if not specified).'))
2582
option_registry.register(
2583
Option('parent_location',
2586
The location of the default branch for pull or merge.
2588
This option is normally set when creating a branch, the first ``pull`` or by
2589
``pull --remember``.
2591
option_registry.register(
2592
Option('post_commit', default=None,
2594
Post commit functions.
2596
An ordered list of python functions to call, separated by spaces.
2598
Each function takes branch, rev_id as parameters.
2600
option_registry.register_lazy('progress_bar', 'breezy.ui.text',
2602
option_registry.register(
2603
Option('public_branch',
2606
A publically-accessible version of this branch.
2608
This implies that the branch setting this option is not publically-accessible.
2609
Used and set by ``bzr send``.
2611
option_registry.register(
2612
Option('push_location',
2615
The location of the default branch for push.
2617
This option is normally set by the first ``push`` or ``push --remember``.
2619
option_registry.register(
2620
Option('push_strict', default=None,
2621
from_unicode=bool_from_store,
2623
The default value for ``push --strict``.
2625
If present, defines the ``--strict`` option default value for checking
2626
uncommitted changes before sending a merge directive.
2628
option_registry.register(
2629
Option('repository.fdatasync', default=True,
2630
from_unicode=bool_from_store,
2632
Flush repository changes onto physical disk?
2634
If true (default), repository changes are flushed through the OS buffers
2635
to physical disk. This is somewhat slower, but means data should not be
2636
lost if the machine crashes. See also dirstate.fdatasync.
2638
option_registry.register_lazy('smtp_server',
2639
'breezy.smtp_connection', 'smtp_server')
2640
option_registry.register_lazy('smtp_password',
2641
'breezy.smtp_connection', 'smtp_password')
2642
option_registry.register_lazy('smtp_username',
2643
'breezy.smtp_connection', 'smtp_username')
2644
option_registry.register(
2645
Option('selftest.timeout',
2647
from_unicode=int_from_store,
2648
help='Abort selftest if one test takes longer than this many seconds',
2651
option_registry.register(
2652
Option('send_strict', default=None,
2653
from_unicode=bool_from_store,
2655
The default value for ``send --strict``.
2657
If present, defines the ``--strict`` option default value for checking
2658
uncommitted changes before sending a bundle.
2661
option_registry.register(
2662
Option('serve.client_timeout',
2663
default=300.0, from_unicode=float_from_store,
2664
help="If we wait for a new request from a client for more than"
2665
" X seconds, consider the client idle, and hangup."))
2666
option_registry.register(
2667
Option('stacked_on_location',
2669
help="""The location where this branch is stacked on."""))
2670
option_registry.register(
2671
Option('submit_branch',
2674
The branch you intend to submit your current work to.
2676
This is automatically set by ``bzr send`` and ``bzr merge``, and is also used
2677
by the ``submit:`` revision spec.
2679
option_registry.register(
2681
help='''Where submissions from this branch are mailed to.'''))
2682
option_registry.register(
2683
ListOption('suppress_warnings',
2685
help="List of warning classes to suppress."))
2686
option_registry.register(
2687
Option('validate_signatures_in_log', default=False,
2688
from_unicode=bool_from_store, invalid='warning',
2689
help='''Whether to validate signatures in brz log.'''))
2690
option_registry.register_lazy('ssl.ca_certs',
2691
'breezy.transport.http', 'opt_ssl_ca_certs')
2693
option_registry.register_lazy('ssl.cert_reqs',
2694
'breezy.transport.http', 'opt_ssl_cert_reqs')
2697
class Section(object):
2698
"""A section defines a dict of option name => value.
2700
This is merely a read-only dict which can add some knowledge about the
2701
options. It is *not* a python dict object though and doesn't try to mimic
2705
def __init__(self, section_id, options):
2706
self.id = section_id
2707
# We re-use the dict-like object received
2708
self.options = options
2710
def get(self, name, default=None, expand=True):
2711
return self.options.get(name, default)
2713
def iter_option_names(self):
2714
for k in self.options.keys():
2718
# Mostly for debugging use
2719
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2722
_NewlyCreatedOption = object()
2723
"""Was the option created during the MutableSection lifetime"""
2724
_DeletedOption = object()
2725
"""Was the option deleted during the MutableSection lifetime"""
2728
class MutableSection(Section):
2729
"""A section allowing changes and keeping track of the original values."""
2731
def __init__(self, section_id, options):
2732
super(MutableSection, self).__init__(section_id, options)
2733
self.reset_changes()
2735
def set(self, name, value):
2736
if name not in self.options:
2737
# This is a new option
2738
self.orig[name] = _NewlyCreatedOption
2739
elif name not in self.orig:
2740
self.orig[name] = self.get(name, None)
2741
self.options[name] = value
2743
def remove(self, name):
2744
if name not in self.orig and name in self.options:
2745
self.orig[name] = self.get(name, None)
2746
del self.options[name]
2748
def reset_changes(self):
2751
def apply_changes(self, dirty, store):
2752
"""Apply option value changes.
2754
``self`` has been reloaded from the persistent storage. ``dirty``
2755
contains the changes made since the previous loading.
2757
:param dirty: the mutable section containing the changes.
2759
:param store: the store containing the section
2761
for k, expected in dirty.orig.items():
2762
actual = dirty.get(k, _DeletedOption)
2763
reloaded = self.get(k, _NewlyCreatedOption)
2764
if actual is _DeletedOption:
2765
if k in self.options:
2769
# Report concurrent updates in an ad-hoc way. This should only
2770
# occurs when different processes try to update the same option
2771
# which is not supported (as in: the config framework is not meant
2772
# to be used as a sharing mechanism).
2773
if expected != reloaded:
2774
if actual is _DeletedOption:
2775
actual = '<DELETED>'
2776
if reloaded is _NewlyCreatedOption:
2777
reloaded = '<CREATED>'
2778
if expected is _NewlyCreatedOption:
2779
expected = '<CREATED>'
2780
# Someone changed the value since we get it from the persistent
2782
trace.warning(gettext(
2783
"Option {0} in section {1} of {2} was changed"
2784
" from {3} to {4}. The {5} value will be saved.".format(
2785
k, self.id, store.external_url(), expected,
2787
# No need to keep track of these changes
2788
self.reset_changes()
2791
class Store(object):
2792
"""Abstract interface to persistent storage for configuration options."""
2794
readonly_section_class = Section
2795
mutable_section_class = MutableSection
2798
# Which sections need to be saved (by section id). We use a dict here
2799
# so the dirty sections can be shared by multiple callers.
2800
self.dirty_sections = {}
2802
def is_loaded(self):
2803
"""Returns True if the Store has been loaded.
2805
This is used to implement lazy loading and ensure the persistent
2806
storage is queried only when needed.
2808
raise NotImplementedError(self.is_loaded)
2811
"""Loads the Store from persistent storage."""
2812
raise NotImplementedError(self.load)
2814
def _load_from_string(self, bytes):
2815
"""Create a store from a string in configobj syntax.
2817
:param bytes: A string representing the file content.
2819
raise NotImplementedError(self._load_from_string)
2822
"""Unloads the Store.
2824
This should make is_loaded() return False. This is used when the caller
2825
knows that the persistent storage has changed or may have change since
2828
raise NotImplementedError(self.unload)
2830
def quote(self, value):
2831
"""Quote a configuration option value for storing purposes.
2833
This allows Stacks to present values as they will be stored.
2837
def unquote(self, value):
2838
"""Unquote a configuration option value into unicode.
2840
The received value is quoted as stored.
2845
"""Saves the Store to persistent storage."""
2846
raise NotImplementedError(self.save)
2848
def _need_saving(self):
2849
for s in self.dirty_sections.values():
2851
# At least one dirty section contains a modification
2855
def apply_changes(self, dirty_sections):
2856
"""Apply changes from dirty sections while checking for coherency.
2858
The Store content is discarded and reloaded from persistent storage to
2859
acquire up-to-date values.
2861
Dirty sections are MutableSection which kept track of the value they
2862
are expected to update.
2864
# We need an up-to-date version from the persistent storage, unload the
2865
# store. The reload will occur when needed (triggered by the first
2866
# get_mutable_section() call below.
2868
# Apply the changes from the preserved dirty sections
2869
for section_id, dirty in dirty_sections.items():
2870
clean = self.get_mutable_section(section_id)
2871
clean.apply_changes(dirty, self)
2872
# Everything is clean now
2873
self.dirty_sections = {}
2875
def save_changes(self):
2876
"""Saves the Store to persistent storage if changes occurred.
2878
Apply the changes recorded in the mutable sections to a store content
2879
refreshed from persistent storage.
2881
raise NotImplementedError(self.save_changes)
2883
def external_url(self):
2884
raise NotImplementedError(self.external_url)
2886
def get_sections(self):
2887
"""Returns an ordered iterable of existing sections.
2889
:returns: An iterable of (store, section).
2891
raise NotImplementedError(self.get_sections)
2893
def get_mutable_section(self, section_id=None):
2894
"""Returns the specified mutable section.
2896
:param section_id: The section identifier
2898
raise NotImplementedError(self.get_mutable_section)
2901
# Mostly for debugging use
2902
return "<config.%s(%s)>" % (self.__class__.__name__,
2903
self.external_url())
2906
class CommandLineStore(Store):
2907
"A store to carry command line overrides for the config options."""
2909
def __init__(self, opts=None):
2910
super(CommandLineStore, self).__init__()
2917
# The dict should be cleared but not replaced so it can be shared.
2918
self.options.clear()
2920
def _from_cmdline(self, overrides):
2921
# Reset before accepting new definitions
2923
for over in overrides:
2925
name, value = over.split('=', 1)
2927
raise errors.BzrCommandError(
2928
gettext("Invalid '%s', should be of the form 'name=value'")
2930
self.options[name] = value
2932
def external_url(self):
2933
# Not an url but it makes debugging easier and is never needed
2937
def get_sections(self):
2938
yield self, self.readonly_section_class(None, self.options)
2941
class IniFileStore(Store):
2942
"""A config Store using ConfigObj for storage.
2944
:ivar _config_obj: Private member to hold the ConfigObj instance used to
2945
serialize/deserialize the config file.
2949
"""A config Store using ConfigObj for storage.
2951
super(IniFileStore, self).__init__()
2952
self._config_obj = None
2954
def is_loaded(self):
2955
return self._config_obj is not None
2958
self._config_obj = None
2959
self.dirty_sections = {}
2961
def _load_content(self):
2962
"""Load the config file bytes.
2964
This should be provided by subclasses
2966
:return: Byte string
2968
raise NotImplementedError(self._load_content)
2970
def _save_content(self, content):
2971
"""Save the config file bytes.
2973
This should be provided by subclasses
2975
:param content: Config file bytes to write
2977
raise NotImplementedError(self._save_content)
2980
"""Load the store from the associated file."""
2981
if self.is_loaded():
2983
content = self._load_content()
2984
self._load_from_string(content)
2985
for hook in ConfigHooks['load']:
2988
def _load_from_string(self, bytes):
2989
"""Create a config store from a string.
2991
:param bytes: A string representing the file content.
2993
if self.is_loaded():
2994
raise AssertionError('Already loaded: %r' % (self._config_obj,))
2995
co_input = BytesIO(bytes)
2997
# The config files are always stored utf8-encoded
2998
self._config_obj = ConfigObj(co_input, encoding='utf-8',
3000
except configobj.ConfigObjError as e:
3001
self._config_obj = None
3002
raise ParseConfigError(e.errors, self.external_url())
3003
except UnicodeDecodeError:
3004
raise ConfigContentError(self.external_url())
3006
def save_changes(self):
3007
if not self.is_loaded():
3010
if not self._need_saving():
3012
# Preserve the current version
3013
dirty_sections = self.dirty_sections.copy()
3014
self.apply_changes(dirty_sections)
3015
# Save to the persistent storage
3019
if not self.is_loaded():
3023
self._config_obj.write(out)
3024
self._save_content(out.getvalue())
3025
for hook in ConfigHooks['save']:
3028
def get_sections(self):
3029
"""Get the configobj section in the file order.
3031
:returns: An iterable of (store, section).
3033
# We need a loaded store
3036
except (errors.NoSuchFile, errors.PermissionDenied):
3037
# If the file can't be read, there is no sections
3039
cobj = self._config_obj
3041
yield self, self.readonly_section_class(None, cobj)
3042
for section_name in cobj.sections:
3044
self.readonly_section_class(section_name,
3045
cobj[section_name]))
3047
def get_mutable_section(self, section_id=None):
3048
# We need a loaded store
3051
except errors.NoSuchFile:
3052
# The file doesn't exist, let's pretend it was empty
3053
self._load_from_string(b'')
3054
if section_id in self.dirty_sections:
3055
# We already created a mutable section for this id
3056
return self.dirty_sections[section_id]
3057
if section_id is None:
3058
section = self._config_obj
3060
section = self._config_obj.setdefault(section_id, {})
3061
mutable_section = self.mutable_section_class(section_id, section)
3062
# All mutable sections can become dirty
3063
self.dirty_sections[section_id] = mutable_section
3064
return mutable_section
3066
def quote(self, value):
3068
# configobj conflates automagical list values and quoting
3069
self._config_obj.list_values = True
3070
return self._config_obj._quote(value)
3072
self._config_obj.list_values = False
3074
def unquote(self, value):
3075
if value and isinstance(value, string_types):
3076
# _unquote doesn't handle None nor empty strings nor anything that
3077
# is not a string, really.
3078
value = self._config_obj._unquote(value)
3081
def external_url(self):
3082
# Since an IniFileStore can be used without a file (at least in tests),
3083
# it's better to provide something than raising a NotImplementedError.
3084
# All daughter classes are supposed to provide an implementation
3086
return 'In-Process Store, no URL'
3089
class TransportIniFileStore(IniFileStore):
3090
"""IniFileStore that loads files from a transport.
3092
:ivar transport: The transport object where the config file is located.
3094
:ivar file_name: The config file basename in the transport directory.
3097
def __init__(self, transport, file_name):
3098
"""A Store using a ini file on a Transport
3100
:param transport: The transport object where the config file is located.
3101
:param file_name: The config file basename in the transport directory.
3103
super(TransportIniFileStore, self).__init__()
3104
self.transport = transport
3105
self.file_name = file_name
3107
def _load_content(self):
3109
return self.transport.get_bytes(self.file_name)
3110
except errors.PermissionDenied:
3111
trace.warning("Permission denied while trying to load "
3112
"configuration store %s.", self.external_url())
3115
def _save_content(self, content):
3116
self.transport.put_bytes(self.file_name, content)
3118
def external_url(self):
3119
# FIXME: external_url should really accepts an optional relpath
3120
# parameter (bug #750169) :-/ -- vila 2011-04-04
3121
# The following will do in the interim but maybe we don't want to
3122
# expose a path here but rather a config ID and its associated
3123
# object </hand wawe>.
3124
return urlutils.join(
3125
self.transport.external_url(), urlutils.escape(self.file_name))
3128
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
3129
# unlockable stores for use with objects that can already ensure the locking
3130
# (think branches). If different stores (not based on ConfigObj) are created,
3131
# they may face the same issue.
3134
class LockableIniFileStore(TransportIniFileStore):
3135
"""A ConfigObjStore using locks on save to ensure store integrity."""
3137
def __init__(self, transport, file_name, lock_dir_name=None):
3138
"""A config Store using ConfigObj for storage.
3140
:param transport: The transport object where the config file is located.
3142
:param file_name: The config file basename in the transport directory.
3144
if lock_dir_name is None:
3145
lock_dir_name = 'lock'
3146
self.lock_dir_name = lock_dir_name
3147
super(LockableIniFileStore, self).__init__(transport, file_name)
3148
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
3150
def lock_write(self, token=None):
3151
"""Takes a write lock in the directory containing the config file.
3153
If the directory doesn't exist it is created.
3155
# FIXME: This doesn't check the ownership of the created directories as
3156
# ensure_config_dir_exists does. It should if the transport is local
3157
# -- vila 2011-04-06
3158
self.transport.create_prefix()
3159
token = self._lock.lock_write(token)
3160
return lock.LogicalLockResult(self.unlock, token)
3165
def break_lock(self):
3166
self._lock.break_lock()
3169
with self.lock_write():
3170
# We need to be able to override the undecorated implementation
3171
self.save_without_locking()
3173
def save_without_locking(self):
3174
super(LockableIniFileStore, self).save()
3177
# FIXME: global, breezy, shouldn't that be 'user' instead or even
3178
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
3179
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
3181
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
3182
# functions or a registry will make it easier and clearer for tests, focusing
3183
# on the relevant parts of the API that needs testing -- vila 20110503 (based
3184
# on a poolie's remark)
3185
class GlobalStore(LockableIniFileStore):
3186
"""A config store for global options.
3188
There is a single GlobalStore for a given process.
3191
def __init__(self, possible_transports=None):
3192
path, kind = bedding._config_dir()
3193
t = transport.get_transport_from_path(
3194
path, possible_transports=possible_transports)
3195
super(GlobalStore, self).__init__(t, kind + '.conf')
3199
class LocationStore(LockableIniFileStore):
3200
"""A config store for options specific to a location.
3202
There is a single LocationStore for a given process.
3205
def __init__(self, possible_transports=None):
3206
t = transport.get_transport_from_path(
3207
bedding.config_dir(), possible_transports=possible_transports)
3208
super(LocationStore, self).__init__(t, 'locations.conf')
3209
self.id = 'locations'
3212
class BranchStore(TransportIniFileStore):
3213
"""A config store for branch options.
3215
There is a single BranchStore for a given branch.
3218
def __init__(self, branch):
3219
super(BranchStore, self).__init__(branch.control_transport,
3221
self.branch = branch
3225
class ControlStore(LockableIniFileStore):
3227
def __init__(self, bzrdir):
3228
super(ControlStore, self).__init__(bzrdir.transport,
3230
lock_dir_name='branch_lock')
3234
class SectionMatcher(object):
3235
"""Select sections into a given Store.
3237
This is intended to be used to postpone getting an iterable of sections
3241
def __init__(self, store):
3244
def get_sections(self):
3245
# This is where we require loading the store so we can see all defined
3247
sections = self.store.get_sections()
3248
# Walk the revisions in the order provided
3249
for store, s in sections:
3253
def match(self, section):
3254
"""Does the proposed section match.
3256
:param section: A Section object.
3258
:returns: True if the section matches, False otherwise.
3260
raise NotImplementedError(self.match)
3263
class NameMatcher(SectionMatcher):
3265
def __init__(self, store, section_id):
3266
super(NameMatcher, self).__init__(store)
3267
self.section_id = section_id
3269
def match(self, section):
3270
return section.id == self.section_id
3273
class LocationSection(Section):
3275
def __init__(self, section, extra_path, branch_name=None):
3276
super(LocationSection, self).__init__(section.id, section.options)
3277
self.extra_path = extra_path
3278
if branch_name is None:
3280
self.locals = {'relpath': extra_path,
3281
'basename': urlutils.basename(extra_path),
3282
'branchname': branch_name}
3284
def get(self, name, default=None, expand=True):
3285
value = super(LocationSection, self).get(name, default)
3286
if value is not None and expand:
3287
policy_name = self.get(name + ':policy', None)
3288
policy = _policy_value.get(policy_name, POLICY_NONE)
3289
if policy == POLICY_APPENDPATH:
3290
value = urlutils.join(value, self.extra_path)
3291
# expand section local options right now (since POLICY_APPENDPATH
3292
# will never add options references, it's ok to expand after it).
3294
for is_ref, chunk in iter_option_refs(value):
3296
chunks.append(chunk)
3299
if ref in self.locals:
3300
chunks.append(self.locals[ref])
3302
chunks.append(chunk)
3303
value = ''.join(chunks)
3307
class StartingPathMatcher(SectionMatcher):
3308
"""Select sections for a given location respecting the Store order."""
3310
# FIXME: Both local paths and urls can be used for section names as well as
3311
# ``location`` to stay consistent with ``LocationMatcher`` which itself
3312
# inherited the fuzziness from the previous ``LocationConfig``
3313
# implementation. We probably need to revisit which encoding is allowed for
3314
# both ``location`` and section names and how we normalize
3315
# them. http://pad.lv/85479, http://pad.lv/437009 and http://359320 are
3316
# related too. -- vila 2012-01-04
3318
def __init__(self, store, location):
3319
super(StartingPathMatcher, self).__init__(store)
3320
if location.startswith('file://'):
3321
location = urlutils.local_path_from_url(location)
3322
self.location = location
3324
def get_sections(self):
3325
"""Get all sections matching ``location`` in the store.
3327
The most generic sections are described first in the store, then more
3328
specific ones can be provided for reduced scopes.
3330
The returned section are therefore returned in the reversed order so
3331
the most specific ones can be found first.
3333
location_parts = self.location.rstrip('/').split('/')
3335
# Later sections are more specific, they should be returned first
3336
for _, section in reversed(list(store.get_sections())):
3337
if section.id is None:
3338
# The no-name section is always included if present
3339
yield store, LocationSection(section, self.location)
3341
section_path = section.id
3342
if section_path.startswith('file://'):
3343
# the location is already a local path or URL, convert the
3344
# section id to the same format
3345
section_path = urlutils.local_path_from_url(section_path)
3346
if (self.location.startswith(section_path) or
3347
fnmatch.fnmatch(self.location, section_path)):
3348
section_parts = section_path.rstrip('/').split('/')
3349
extra_path = '/'.join(location_parts[len(section_parts):])
3350
yield store, LocationSection(section, extra_path)
3353
class LocationMatcher(SectionMatcher):
3355
def __init__(self, store, location):
3356
super(LocationMatcher, self).__init__(store)
3357
url, params = urlutils.split_segment_parameters(location)
3358
if location.startswith('file://'):
3359
location = urlutils.local_path_from_url(location)
3360
self.location = location
3361
branch_name = params.get('branch')
3362
if branch_name is None:
3363
self.branch_name = urlutils.basename(self.location)
3365
self.branch_name = urlutils.unescape(branch_name)
3367
def _get_matching_sections(self):
3368
"""Get all sections matching ``location``."""
3369
# We slightly diverge from LocalConfig here by allowing the no-name
3370
# section as the most generic one and the lower priority.
3371
no_name_section = None
3373
# Filter out the no_name_section so _iter_for_location_by_parts can be
3374
# used (it assumes all sections have a name).
3375
for _, section in self.store.get_sections():
3376
if section.id is None:
3377
no_name_section = section
3379
all_sections.append(section)
3380
# Unfortunately _iter_for_location_by_parts deals with section names so
3381
# we have to resync.
3382
filtered_sections = _iter_for_location_by_parts(
3383
[s.id for s in all_sections], self.location)
3384
iter_all_sections = iter(all_sections)
3385
matching_sections = []
3386
if no_name_section is not None:
3387
matching_sections.append(
3388
(0, LocationSection(no_name_section, self.location)))
3389
for section_id, extra_path, length in filtered_sections:
3390
# a section id is unique for a given store so it's safe to take the
3391
# first matching section while iterating. Also, all filtered
3392
# sections are part of 'all_sections' and will always be found
3395
section = next(iter_all_sections)
3396
if section_id == section.id:
3397
section = LocationSection(section, extra_path,
3399
matching_sections.append((length, section))
3401
return matching_sections
3403
def get_sections(self):
3404
# Override the default implementation as we want to change the order
3405
# We want the longest (aka more specific) locations first
3406
sections = sorted(self._get_matching_sections(),
3407
key=lambda match: (match[0], match[1].id),
3409
# Sections mentioning 'ignore_parents' restrict the selection
3410
for _, section in sections:
3411
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3412
ignore = section.get('ignore_parents', None)
3413
if ignore is not None:
3414
ignore = ui.bool_from_string(ignore)
3417
# Finally, we have a valid section
3418
yield self.store, section
3421
# FIXME: _shared_stores should be an attribute of a library state once a
3422
# library_state object is always available.
3424
_shared_stores_at_exit_installed = False
3427
class Stack(object):
3428
"""A stack of configurations where an option can be defined"""
3430
def __init__(self, sections_def, store=None, mutable_section_id=None):
3431
"""Creates a stack of sections with an optional store for changes.
3433
:param sections_def: A list of Section or callables that returns an
3434
iterable of Section. This defines the Sections for the Stack and
3435
can be called repeatedly if needed.
3437
:param store: The optional Store where modifications will be
3438
recorded. If none is specified, no modifications can be done.
3440
:param mutable_section_id: The id of the MutableSection where changes
3441
are recorded. This requires the ``store`` parameter to be
3444
self.sections_def = sections_def
3446
self.mutable_section_id = mutable_section_id
3448
def iter_sections(self):
3449
"""Iterate all the defined sections."""
3450
# Ensuring lazy loading is achieved by delaying section matching (which
3451
# implies querying the persistent storage) until it can't be avoided
3452
# anymore by using callables to describe (possibly empty) section
3454
for sections in self.sections_def:
3455
for store, section in sections():
3456
yield store, section
3458
def get(self, name, expand=True, convert=True):
3459
"""Return the *first* option value found in the sections.
3461
This is where we guarantee that sections coming from Store are loaded
3462
lazily: the loading is delayed until we need to either check that an
3463
option exists or get its value, which in turn may require to discover
3464
in which sections it can be defined. Both of these (section and option
3465
existence) require loading the store (even partially).
3467
:param name: The queried option.
3469
:param expand: Whether options references should be expanded.
3471
:param convert: Whether the option value should be converted from
3472
unicode (do nothing for non-registered options).
3474
:returns: The value of the option.
3476
# FIXME: No caching of options nor sections yet -- vila 20110503
3478
found_store = None # Where the option value has been found
3479
# If the option is registered, it may provide additional info about
3482
opt = option_registry.get(name)
3487
def expand_and_convert(val):
3488
# This may need to be called in different contexts if the value is
3489
# None or ends up being None during expansion or conversion.
3492
if isinstance(val, string_types):
3493
val = self._expand_options_in_string(val)
3495
trace.warning('Cannot expand "%s":'
3496
' %s does not support option expansion'
3497
% (name, type(val)))
3499
val = found_store.unquote(val)
3501
val = opt.convert_from_unicode(found_store, val)
3504
# First of all, check if the environment can override the configuration
3506
if opt is not None and opt.override_from_env:
3507
value = opt.get_override()
3508
value = expand_and_convert(value)
3510
for store, section in self.iter_sections():
3511
value = section.get(name)
3512
if value is not None:
3515
value = expand_and_convert(value)
3516
if opt is not None and value is None:
3517
# If the option is registered, it may provide a default value
3518
value = opt.get_default()
3519
value = expand_and_convert(value)
3520
for hook in ConfigHooks['get']:
3521
hook(self, name, value)
3524
def expand_options(self, string, env=None):
3525
"""Expand option references in the string in the configuration context.
3527
:param string: The string containing option(s) to expand.
3529
:param env: An option dict defining additional configuration options or
3530
overriding existing ones.
3532
:returns: The expanded string.
3534
return self._expand_options_in_string(string, env)
3536
def _expand_options_in_string(self, string, env=None, _refs=None):
3537
"""Expand options in the string in the configuration context.
3539
:param string: The string to be expanded.
3541
:param env: An option dict defining additional configuration options or
3542
overriding existing ones.
3544
:param _refs: Private list (FIFO) containing the options being expanded
3547
:returns: The expanded string.
3550
# Not much to expand there
3553
# What references are currently resolved (to detect loops)
3556
# We need to iterate until no more refs appear ({{foo}} will need two
3557
# iterations for example).
3562
for is_ref, chunk in iter_option_refs(result):
3564
chunks.append(chunk)
3569
raise OptionExpansionLoop(string, _refs)
3571
value = self._expand_option(name, env, _refs)
3573
raise ExpandingUnknownOption(name, string)
3574
chunks.append(value)
3576
result = ''.join(chunks)
3579
def _expand_option(self, name, env, _refs):
3580
if env is not None and name in env:
3581
# Special case, values provided in env takes precedence over
3585
value = self.get(name, expand=False, convert=False)
3586
value = self._expand_options_in_string(value, env, _refs)
3589
def _get_mutable_section(self):
3590
"""Get the MutableSection for the Stack.
3592
This is where we guarantee that the mutable section is lazily loaded:
3593
this means we won't load the corresponding store before setting a value
3594
or deleting an option. In practice the store will often be loaded but
3595
this helps catching some programming errors.
3598
section = store.get_mutable_section(self.mutable_section_id)
3599
return store, section
3601
def set(self, name, value):
3602
"""Set a new value for the option."""
3603
store, section = self._get_mutable_section()
3604
section.set(name, store.quote(value))
3605
for hook in ConfigHooks['set']:
3606
hook(self, name, value)
3608
def remove(self, name):
3609
"""Remove an existing option."""
3610
_, section = self._get_mutable_section()
3611
section.remove(name)
3612
for hook in ConfigHooks['remove']:
3616
# Mostly for debugging use
3617
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3619
def _get_overrides(self):
3620
if breezy._global_state is not None:
3621
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
3622
return breezy._global_state.cmdline_overrides.get_sections()
3625
def get_shared_store(self, store, state=None):
3626
"""Get a known shared store.
3628
Store urls uniquely identify them and are used to ensure a single copy
3629
is shared across all users.
3631
:param store: The store known to the caller.
3633
:param state: The library state where the known stores are kept.
3635
:returns: The store received if it's not a known one, an already known
3639
# TODO(jelmer): Urgh, this is circular so we can't call breezy.get_global_state()
3640
state = breezy._global_state
3642
global _shared_stores_at_exit_installed
3643
stores = _shared_stores
3645
def save_config_changes():
3646
for k, store in stores.items():
3647
store.save_changes()
3648
if not _shared_stores_at_exit_installed:
3649
# FIXME: Ugly hack waiting for library_state to always be
3650
# available. -- vila 20120731
3652
atexit.register(save_config_changes)
3653
_shared_stores_at_exit_installed = True
3655
stores = state.config_stores
3656
url = store.external_url()
3664
class MemoryStack(Stack):
3665
"""A configuration stack defined from a string.
3667
This is mainly intended for tests and requires no disk resources.
3670
def __init__(self, content=None):
3671
"""Create an in-memory stack from a given content.
3673
It uses a single store based on configobj and support reading and
3676
:param content: The initial content of the store. If None, the store is
3677
not loaded and ``_load_from_string`` can and should be used if
3680
store = IniFileStore()
3681
if content is not None:
3682
store._load_from_string(content)
3683
super(MemoryStack, self).__init__(
3684
[store.get_sections], store)
3687
class _CompatibleStack(Stack):
3688
"""Place holder for compatibility with previous design.
3690
This is intended to ease the transition from the Config-based design to the
3691
Stack-based design and should not be used nor relied upon by plugins.
3693
One assumption made here is that the daughter classes will all use Stores
3694
derived from LockableIniFileStore).
3696
It implements set() and remove () by re-loading the store before applying
3697
the modification and saving it.
3699
The long term plan being to implement a single write by store to save
3700
all modifications, this class should not be used in the interim.
3703
def set(self, name, value):
3706
super(_CompatibleStack, self).set(name, value)
3707
# Force a write to persistent storage
3710
def remove(self, name):
3713
super(_CompatibleStack, self).remove(name)
3714
# Force a write to persistent storage
3718
class GlobalStack(Stack):
3719
"""Global options only stack.
3721
The following sections are queried:
3723
* command-line overrides,
3725
* the 'DEFAULT' section in bazaar.conf
3727
This stack will use the ``DEFAULT`` section in bazaar.conf as its
3732
gstore = self.get_shared_store(GlobalStore())
3733
super(GlobalStack, self).__init__(
3734
[self._get_overrides,
3735
NameMatcher(gstore, 'DEFAULT').get_sections],
3736
gstore, mutable_section_id='DEFAULT')
3739
class LocationStack(Stack):
3740
"""Per-location options falling back to global options stack.
3743
The following sections are queried:
3745
* command-line overrides,
3747
* the sections matching ``location`` in ``locations.conf``, the order being
3748
defined by the number of path components in the section glob, higher
3749
numbers first (from most specific section to most generic).
3751
* the 'DEFAULT' section in bazaar.conf
3753
This stack will use the ``location`` section in locations.conf as its
3757
def __init__(self, location):
3758
"""Make a new stack for a location and global configuration.
3760
:param location: A URL prefix to """
3761
lstore = self.get_shared_store(LocationStore())
3762
if location.startswith('file://'):
3763
location = urlutils.local_path_from_url(location)
3764
gstore = self.get_shared_store(GlobalStore())
3765
super(LocationStack, self).__init__(
3766
[self._get_overrides,
3767
LocationMatcher(lstore, location).get_sections,
3768
NameMatcher(gstore, 'DEFAULT').get_sections],
3769
lstore, mutable_section_id=location)
3772
class BranchStack(Stack):
3773
"""Per-location options falling back to branch then global options stack.
3775
The following sections are queried:
3777
* command-line overrides,
3779
* the sections matching ``location`` in ``locations.conf``, the order being
3780
defined by the number of path components in the section glob, higher
3781
numbers first (from most specific section to most generic),
3783
* the no-name section in branch.conf,
3785
* the ``DEFAULT`` section in ``bazaar.conf``.
3787
This stack will use the no-name section in ``branch.conf`` as its
3791
def __init__(self, branch):
3792
lstore = self.get_shared_store(LocationStore())
3793
bstore = branch._get_config_store()
3794
gstore = self.get_shared_store(GlobalStore())
3795
super(BranchStack, self).__init__(
3796
[self._get_overrides,
3797
LocationMatcher(lstore, branch.base).get_sections,
3798
NameMatcher(bstore, None).get_sections,
3799
NameMatcher(gstore, 'DEFAULT').get_sections],
3801
self.branch = branch
3803
def lock_write(self, token=None):
3804
return self.branch.lock_write(token)
3807
return self.branch.unlock()
3809
def set(self, name, value):
3810
with self.lock_write():
3811
super(BranchStack, self).set(name, value)
3812
# Unlocking the branch will trigger a store.save_changes() so the
3813
# last unlock saves all the changes.
3815
def remove(self, name):
3816
with self.lock_write():
3817
super(BranchStack, self).remove(name)
3818
# Unlocking the branch will trigger a store.save_changes() so the
3819
# last unlock saves all the changes.
3822
class RemoteControlStack(Stack):
3823
"""Remote control-only options stack."""
3825
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
3826
# with the stack used for remote bzr dirs. RemoteControlStack only uses
3827
# control.conf and is used only for stack options.
3829
def __init__(self, bzrdir):
3830
cstore = bzrdir._get_config_store()
3831
super(RemoteControlStack, self).__init__(
3832
[NameMatcher(cstore, None).get_sections],
3834
self.controldir = bzrdir
3837
class BranchOnlyStack(Stack):
3838
"""Branch-only options stack."""
3840
# FIXME: _BranchOnlyStack only uses branch.conf and is used only for the
3841
# stacked_on_location options waiting for http://pad.lv/832042 to be fixed.
3842
# -- vila 2011-12-16
3844
def __init__(self, branch):
3845
bstore = branch._get_config_store()
3846
super(BranchOnlyStack, self).__init__(
3847
[NameMatcher(bstore, None).get_sections],
3849
self.branch = branch
3851
def lock_write(self, token=None):
3852
return self.branch.lock_write(token)
3855
return self.branch.unlock()
3857
def set(self, name, value):
3858
with self.lock_write():
3859
super(BranchOnlyStack, self).set(name, value)
3860
# Force a write to persistent storage
3861
self.store.save_changes()
3863
def remove(self, name):
3864
with self.lock_write():
3865
super(BranchOnlyStack, self).remove(name)
3866
# Force a write to persistent storage
3867
self.store.save_changes()
3870
class cmd_config(commands.Command):
3871
__doc__ = """Display, set or remove a configuration option.
3873
Display the active value for option NAME.
3875
If --all is specified, NAME is interpreted as a regular expression and all
3876
matching options are displayed mentioning their scope and without resolving
3877
option references in the value). The active value that bzr will take into
3878
account is the first one displayed for each option.
3880
If NAME is not given, --all .* is implied (all options are displayed for the
3883
Setting a value is achieved by using NAME=value without spaces. The value
3884
is set in the most relevant scope and can be checked by displaying the
3887
Removing a value is achieved by using --remove NAME.
3890
takes_args = ['name?']
3894
# FIXME: This should be a registry option so that plugins can register
3895
# their own config files (or not) and will also address
3896
# http://pad.lv/788991 -- vila 20101115
3897
commands.Option('scope', help='Reduce the scope to the specified'
3898
' configuration file.',
3900
commands.Option('all',
3901
help='Display all the defined values for the matching options.',
3903
commands.Option('remove', help='Remove the option from'
3904
' the configuration file.'),
3907
_see_also = ['configuration']
3909
@commands.display_command
3910
def run(self, name=None, all=False, directory=None, scope=None,
3912
if directory is None:
3914
directory = directory_service.directories.dereference(directory)
3915
directory = urlutils.normalize_url(directory)
3917
raise errors.BzrError(
3918
'--all and --remove are mutually exclusive.')
3920
# Delete the option in the given scope
3921
self._remove_config_option(name, directory, scope)
3923
# Defaults to all options
3924
self._show_matching_options('.*', directory, scope)
3927
name, value = name.split('=', 1)
3929
# Display the option(s) value(s)
3931
self._show_matching_options(name, directory, scope)
3933
self._show_value(name, directory, scope)
3936
raise errors.BzrError(
3937
'Only one option can be set.')
3938
# Set the option value
3939
self._set_config_option(name, value, directory, scope)
3941
def _get_stack(self, directory, scope=None, write_access=False):
3942
"""Get the configuration stack specified by ``directory`` and ``scope``.
3944
:param directory: Where the configurations are derived from.
3946
:param scope: A specific config to start from.
3948
:param write_access: Whether a write access to the stack will be
3951
# FIXME: scope should allow access to plugin-specific stacks (even
3952
# reduced to the plugin-specific store), related to
3953
# http://pad.lv/788991 -- vila 2011-11-15
3954
if scope is not None:
3955
if scope == 'breezy':
3956
return GlobalStack()
3957
elif scope == 'locations':
3958
return LocationStack(directory)
3959
elif scope == 'branch':
3961
controldir.ControlDir.open_containing_tree_or_branch(
3964
self.add_cleanup(br.lock_write().unlock)
3965
return br.get_config_stack()
3966
raise NoSuchConfig(scope)
3970
controldir.ControlDir.open_containing_tree_or_branch(
3973
self.add_cleanup(br.lock_write().unlock)
3974
return br.get_config_stack()
3975
except errors.NotBranchError:
3976
return LocationStack(directory)
3978
def _quote_multiline(self, value):
3980
value = '"""' + value + '"""'
3983
def _show_value(self, name, directory, scope):
3984
conf = self._get_stack(directory, scope)
3985
value = conf.get(name, expand=True, convert=False)
3986
if value is not None:
3987
# Quote the value appropriately
3988
value = self._quote_multiline(value)
3989
self.outf.write('%s\n' % (value,))
3991
raise NoSuchConfigOption(name)
3993
def _show_matching_options(self, name, directory, scope):
3994
name = lazy_regex.lazy_compile(name)
3995
# We want any error in the regexp to be raised *now* so we need to
3996
# avoid the delay introduced by the lazy regexp. But, we still do
3997
# want the nicer errors raised by lazy_regex.
3998
name._compile_and_collapse()
4001
conf = self._get_stack(directory, scope)
4002
for store, section in conf.iter_sections():
4003
for oname in section.iter_option_names():
4004
if name.search(oname):
4005
if cur_store_id != store.id:
4006
# Explain where the options are defined
4007
self.outf.write('%s:\n' % (store.id,))
4008
cur_store_id = store.id
4010
if (section.id is not None and cur_section != section.id):
4011
# Display the section id as it appears in the store
4012
# (None doesn't appear by definition)
4013
self.outf.write(' [%s]\n' % (section.id,))
4014
cur_section = section.id
4015
value = section.get(oname, expand=False)
4016
# Quote the value appropriately
4017
value = self._quote_multiline(value)
4018
self.outf.write(' %s = %s\n' % (oname, value))
4020
def _set_config_option(self, name, value, directory, scope):
4021
conf = self._get_stack(directory, scope, write_access=True)
4022
conf.set(name, value)
4023
# Explicitly save the changes
4024
conf.store.save_changes()
4026
def _remove_config_option(self, name, directory, scope):
4028
raise errors.BzrCommandError(
4029
'--remove expects an option to remove.')
4030
conf = self._get_stack(directory, scope, write_access=True)
4033
# Explicitly save the changes
4034
conf.store.save_changes()
4036
raise NoSuchConfigOption(name)
4041
# We need adapters that can build a Store or a Stack in a test context. Test
4042
# classes, based on TestCaseWithTransport, can use the registry to parametrize
4043
# themselves. The builder will receive a test instance and should return a
4044
# ready-to-use store or stack. Plugins that define new store/stacks can also
4045
# register themselves here to be tested against the tests defined in
4046
# breezy.tests.test_config. Note that the builder can be called multiple times
4047
# for the same test.
4049
# The registered object should be a callable receiving a test instance
4050
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
4052
test_store_builder_registry = registry.Registry()
4054
# The registered object should be a callable receiving a test instance
4055
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
4057
test_stack_builder_registry = registry.Registry()