1508
2258
configobj[name] = value
1510
2260
configobj.setdefault(section, {})[name] = value
2261
for hook in OldConfigHooks['set']:
2262
hook(self, name, value)
2263
self._set_configobj(configobj)
2265
def remove_option(self, option_name, section_name=None):
2266
configobj = self._get_configobj()
2267
if section_name is None:
2268
del configobj[option_name]
2270
del configobj[section_name][option_name]
2271
for hook in OldConfigHooks['remove']:
2272
hook(self, option_name)
1511
2273
self._set_configobj(configobj)
1513
2275
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2277
f = StringIO(self._transport.get_bytes(self._filename))
2278
for hook in OldConfigHooks['load']:
1516
2281
except errors.NoSuchFile:
1517
2282
return StringIO()
2283
except errors.PermissionDenied, e:
2284
trace.warning("Permission denied while trying to open "
2285
"configuration file %s.", urlutils.unescape_for_display(
2286
urlutils.join(self._transport.base, self._filename), "utf-8"))
2289
def _external_url(self):
2290
return urlutils.join(self._transport.external_url(), self._filename)
1519
2292
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2293
f = self._get_config_file()
2296
conf = ConfigObj(f, encoding='utf-8')
2297
except configobj.ConfigObjError, e:
2298
raise errors.ParseConfigError(e.errors, self._external_url())
2299
except UnicodeDecodeError:
2300
raise errors.ConfigContentError(self._external_url())
1522
2305
def _set_configobj(self, configobj):
1523
2306
out_file = StringIO()
1524
2307
configobj.write(out_file)
1525
2308
out_file.seek(0)
1526
2309
self._transport.put_file(self._filename, out_file)
2310
for hook in OldConfigHooks['save']:
2314
class Option(object):
2315
"""An option definition.
2317
The option *values* are stored in config files and found in sections.
2319
Here we define various properties about the option itself, its default
2320
value, how to convert it from stores, what to do when invalid values are
2321
encoutered, in which config files it can be stored.
2324
def __init__(self, name, default=None, default_from_env=None,
2326
from_unicode=None, invalid=None):
2327
"""Build an option definition.
2329
:param name: the name used to refer to the option.
2331
:param default: the default value to use when none exist in the config
2332
stores. This is either a string that ``from_unicode`` will convert
2333
into the proper type or a python object that can be stringified (so
2334
only the empty list is supported for example).
2336
:param default_from_env: A list of environment variables which can
2337
provide a default value. 'default' will be used only if none of the
2338
variables specified here are set in the environment.
2340
:param help: a doc string to explain the option to the user.
2342
:param from_unicode: a callable to convert the unicode string
2343
representing the option value in a store. This is not called for
2346
:param invalid: the action to be taken when an invalid value is
2347
encountered in a store. This is called only when from_unicode is
2348
invoked to convert a string and returns None or raise ValueError or
2349
TypeError. Accepted values are: None (ignore invalid values),
2350
'warning' (emit a warning), 'error' (emit an error message and
2353
if default_from_env is None:
2354
default_from_env = []
2356
# Convert the default value to a unicode string so all values are
2357
# strings internally before conversion (via from_unicode) is attempted.
2360
elif isinstance(default, list):
2361
# Only the empty list is supported
2363
raise AssertionError(
2364
'Only empty lists are supported as default values')
2366
elif isinstance(default, (str, unicode, bool, int, float)):
2367
# Rely on python to convert strings, booleans and integers
2368
self.default = u'%s' % (default,)
2370
# other python objects are not expected
2371
raise AssertionError('%r is not supported as a default value'
2373
self.default_from_env = default_from_env
2375
self.from_unicode = from_unicode
2376
if invalid and invalid not in ('warning', 'error'):
2377
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2378
self.invalid = invalid
2380
def convert_from_unicode(self, unicode_value):
2381
if self.from_unicode is None or unicode_value is None:
2382
# Don't convert or nothing to convert
2383
return unicode_value
2385
converted = self.from_unicode(unicode_value)
2386
except (ValueError, TypeError):
2387
# Invalid values are ignored
2389
if converted is None and self.invalid is not None:
2390
# The conversion failed
2391
if self.invalid == 'warning':
2392
trace.warning('Value "%s" is not valid for "%s"',
2393
unicode_value, self.name)
2394
elif self.invalid == 'error':
2395
raise errors.ConfigOptionValueError(self.name, unicode_value)
2398
def get_default(self):
2400
for var in self.default_from_env:
2402
# If the env variable is defined, its value is the default one
2403
value = os.environ[var]
2408
# Otherwise, fallback to the value defined at registration
2409
value = self.default
2412
def get_help_text(self, additional_see_also=None, plain=True):
2414
from bzrlib import help_topics
2415
result += help_topics._format_see_also(additional_see_also)
2417
result = help_topics.help_as_plain_text(result)
2421
# Predefined converters to get proper values from store
2423
def bool_from_store(unicode_str):
2424
return ui.bool_from_string(unicode_str)
2427
def int_from_store(unicode_str):
2428
return int(unicode_str)
2431
def float_from_store(unicode_str):
2432
return float(unicode_str)
2436
# Use a an empty dict to initialize an empty configobj avoiding all
2437
# parsing and encoding checks
2438
_list_converter_config = configobj.ConfigObj(
2439
{}, encoding='utf-8', list_values=True, interpolation=False)
2442
def list_from_store(unicode_str):
2443
if not isinstance(unicode_str, basestring):
2445
# Now inject our string directly as unicode. All callers got their value
2446
# from configobj, so values that need to be quoted are already properly
2448
_list_converter_config.reset()
2449
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2450
maybe_list = _list_converter_config['list']
2451
# ConfigObj return '' instead of u''. Use 'str' below to catch all cases.
2452
if isinstance(maybe_list, basestring):
2454
# A single value, most probably the user forgot (or didn't care to
2455
# add) the final ','
2458
# The empty string, convert to empty list
2461
# We rely on ConfigObj providing us with a list already
2466
class OptionRegistry(registry.Registry):
2467
"""Register config options by their name.
2469
This overrides ``registry.Registry`` to simplify registration by acquiring
2470
some information from the option object itself.
2473
def register(self, option):
2474
"""Register a new option to its name.
2476
:param option: The option to register. Its name is used as the key.
2478
super(OptionRegistry, self).register(option.name, option,
2481
def register_lazy(self, key, module_name, member_name):
2482
"""Register a new option to be loaded on request.
2484
:param key: the key to request the option later. Since the registration
2485
is lazy, it should be provided and match the option name.
2487
:param module_name: the python path to the module. Such as 'os.path'.
2489
:param member_name: the member of the module to return. If empty or
2490
None, get() will return the module itself.
2492
super(OptionRegistry, self).register_lazy(key,
2493
module_name, member_name)
2495
def get_help(self, key=None):
2496
"""Get the help text associated with the given key"""
2497
option = self.get(key)
2498
the_help = option.help
2499
if callable(the_help):
2500
return the_help(self, key)
2504
option_registry = OptionRegistry()
2507
# Registered options in lexicographical order
2509
option_registry.register(
2510
Option('bzr.workingtree.worth_saving_limit', default=10,
2511
from_unicode=int_from_store, invalid='warning',
2513
How many changes before saving the dirstate.
2515
-1 means that we will never rewrite the dirstate file for only
2516
stat-cache changes. Regardless of this setting, we will always rewrite
2517
the dirstate file if a file is added/removed/renamed/etc. This flag only
2518
affects the behavior of updating the dirstate file after we notice that
2519
a file has been touched.
2521
option_registry.register(
2522
Option('dirstate.fdatasync', default=True,
2523
from_unicode=bool_from_store,
2525
Flush dirstate changes onto physical disk?
2527
If true (default), working tree metadata changes are flushed through the
2528
OS buffers to physical disk. This is somewhat slower, but means data
2529
should not be lost if the machine crashes. See also repository.fdatasync.
2531
option_registry.register(
2532
Option('debug_flags', default=[], from_unicode=list_from_store,
2533
help='Debug flags to activate.'))
2534
option_registry.register(
2535
Option('default_format', default='2a',
2536
help='Format used when creating branches.'))
2537
option_registry.register(
2538
Option('dpush_strict', default=None,
2539
from_unicode=bool_from_store,
2541
The default value for ``dpush --strict``.
2543
If present, defines the ``--strict`` option default value for checking
2544
uncommitted changes before pushing into a different VCS without any
2545
custom bzr metadata.
2547
option_registry.register(
2549
help='The command called to launch an editor to enter a message.'))
2550
option_registry.register(
2551
Option('ignore_missing_extensions', default=False,
2552
from_unicode=bool_from_store,
2554
Control the missing extensions warning display.
2556
The warning will not be emitted if set to True.
2558
option_registry.register(
2560
help='Language to translate messages into.'))
2561
option_registry.register(
2562
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2564
Steal locks that appears to be dead.
2566
If set to True, bzr will check if a lock is supposed to be held by an
2567
active process from the same user on the same machine. If the user and
2568
machine match, but no process with the given PID is active, then bzr
2569
will automatically break the stale lock, and create a new lock for
2571
Otherwise, bzr will prompt as normal to break the lock.
2573
option_registry.register(
2574
Option('output_encoding',
2575
help= 'Unicode encoding for output'
2576
' (terminal encoding if not specified).'))
2577
option_registry.register(
2578
Option('push_strict', default=None,
2579
from_unicode=bool_from_store,
2581
The default value for ``push --strict``.
2583
If present, defines the ``--strict`` option default value for checking
2584
uncommitted changes before sending a merge directive.
2586
option_registry.register(
2587
Option('repository.fdatasync', default=True,
2588
from_unicode=bool_from_store,
2590
Flush repository changes onto physical disk?
2592
If true (default), repository changes are flushed through the OS buffers
2593
to physical disk. This is somewhat slower, but means data should not be
2594
lost if the machine crashes. See also dirstate.fdatasync.
2596
option_registry.register(
2597
Option('send_strict', default=None,
2598
from_unicode=bool_from_store,
2600
The default value for ``send --strict``.
2602
If present, defines the ``--strict`` option default value for checking
2603
uncommitted changes before pushing.
2606
option_registry.register(
2607
Option('serve.client_timeout',
2608
default=300.0, from_unicode=float_from_store,
2609
help="If we wait for a new request from a client for more than"
2610
" X seconds, consider the client idle, and hangup."))
2613
class Section(object):
2614
"""A section defines a dict of option name => value.
2616
This is merely a read-only dict which can add some knowledge about the
2617
options. It is *not* a python dict object though and doesn't try to mimic
2621
def __init__(self, section_id, options):
2622
self.id = section_id
2623
# We re-use the dict-like object received
2624
self.options = options
2626
def get(self, name, default=None):
2627
return self.options.get(name, default)
2630
# Mostly for debugging use
2631
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2634
_NewlyCreatedOption = object()
2635
"""Was the option created during the MutableSection lifetime"""
2638
class MutableSection(Section):
2639
"""A section allowing changes and keeping track of the original values."""
2641
def __init__(self, section_id, options):
2642
super(MutableSection, self).__init__(section_id, options)
2645
def set(self, name, value):
2646
if name not in self.options:
2647
# This is a new option
2648
self.orig[name] = _NewlyCreatedOption
2649
elif name not in self.orig:
2650
self.orig[name] = self.get(name, None)
2651
self.options[name] = value
2653
def remove(self, name):
2654
if name not in self.orig:
2655
self.orig[name] = self.get(name, None)
2656
del self.options[name]
2659
class CommandLineSection(MutableSection):
2660
"""A section used to carry command line overrides for the config options."""
2662
def __init__(self, opts=None):
2665
super(CommandLineSection, self).__init__('cmdline-overrides', opts)
2668
# The dict should be cleared but not replaced so it can be shared.
2669
self.options.clear()
2671
def _from_cmdline(self, overrides):
2672
# Reset before accepting new definitions
2674
for over in overrides:
2676
name, value = over.split('=', 1)
2678
raise errors.BzrCommandError(
2679
gettext("Invalid '%s', should be of the form 'name=value'")
2681
self.set(name, value)
2684
class Store(object):
2685
"""Abstract interface to persistent storage for configuration options."""
2687
readonly_section_class = Section
2688
mutable_section_class = MutableSection
2690
def is_loaded(self):
2691
"""Returns True if the Store has been loaded.
2693
This is used to implement lazy loading and ensure the persistent
2694
storage is queried only when needed.
2696
raise NotImplementedError(self.is_loaded)
2699
"""Loads the Store from persistent storage."""
2700
raise NotImplementedError(self.load)
2702
def _load_from_string(self, bytes):
2703
"""Create a store from a string in configobj syntax.
2705
:param bytes: A string representing the file content.
2707
raise NotImplementedError(self._load_from_string)
2710
"""Unloads the Store.
2712
This should make is_loaded() return False. This is used when the caller
2713
knows that the persistent storage has changed or may have change since
2716
raise NotImplementedError(self.unload)
2719
"""Saves the Store to persistent storage."""
2720
raise NotImplementedError(self.save)
2722
def external_url(self):
2723
raise NotImplementedError(self.external_url)
2725
def get_sections(self):
2726
"""Returns an ordered iterable of existing sections.
2728
:returns: An iterable of (name, dict).
2730
raise NotImplementedError(self.get_sections)
2732
def get_mutable_section(self, section_name=None):
2733
"""Returns the specified mutable section.
2735
:param section_name: The section identifier
2737
raise NotImplementedError(self.get_mutable_section)
2740
# Mostly for debugging use
2741
return "<config.%s(%s)>" % (self.__class__.__name__,
2742
self.external_url())
2745
class IniFileStore(Store):
2746
"""A config Store using ConfigObj for storage.
2748
:ivar transport: The transport object where the config file is located.
2750
:ivar file_name: The config file basename in the transport directory.
2752
:ivar _config_obj: Private member to hold the ConfigObj instance used to
2753
serialize/deserialize the config file.
2756
def __init__(self, transport, file_name):
2757
"""A config Store using ConfigObj for storage.
2759
:param transport: The transport object where the config file is located.
2761
:param file_name: The config file basename in the transport directory.
2763
super(IniFileStore, self).__init__()
2764
self.transport = transport
2765
self.file_name = file_name
2766
self._config_obj = None
2768
def is_loaded(self):
2769
return self._config_obj != None
2772
self._config_obj = None
2775
"""Load the store from the associated file."""
2776
if self.is_loaded():
2779
content = self.transport.get_bytes(self.file_name)
2780
except errors.PermissionDenied:
2781
trace.warning("Permission denied while trying to load "
2782
"configuration store %s.", self.external_url())
2784
self._load_from_string(content)
2785
for hook in ConfigHooks['load']:
2788
def _load_from_string(self, bytes):
2789
"""Create a config store from a string.
2791
:param bytes: A string representing the file content.
2793
if self.is_loaded():
2794
raise AssertionError('Already loaded: %r' % (self._config_obj,))
2795
co_input = StringIO(bytes)
2797
# The config files are always stored utf8-encoded
2798
self._config_obj = ConfigObj(co_input, encoding='utf-8',
2800
except configobj.ConfigObjError, e:
2801
self._config_obj = None
2802
raise errors.ParseConfigError(e.errors, self.external_url())
2803
except UnicodeDecodeError:
2804
raise errors.ConfigContentError(self.external_url())
2807
if not self.is_loaded():
2811
self._config_obj.write(out)
2812
self.transport.put_bytes(self.file_name, out.getvalue())
2813
for hook in ConfigHooks['save']:
2816
def external_url(self):
2817
# FIXME: external_url should really accepts an optional relpath
2818
# parameter (bug #750169) :-/ -- vila 2011-04-04
2819
# The following will do in the interim but maybe we don't want to
2820
# expose a path here but rather a config ID and its associated
2821
# object </hand wawe>.
2822
return urlutils.join(self.transport.external_url(), self.file_name)
2824
def get_sections(self):
2825
"""Get the configobj section in the file order.
2827
:returns: An iterable of (name, dict).
2829
# We need a loaded store
2832
except (errors.NoSuchFile, errors.PermissionDenied):
2833
# If the file can't be read, there is no sections
2835
cobj = self._config_obj
2837
yield self.readonly_section_class(None, cobj)
2838
for section_name in cobj.sections:
2839
yield self.readonly_section_class(section_name, cobj[section_name])
2841
def get_mutable_section(self, section_name=None):
2842
# We need a loaded store
2845
except errors.NoSuchFile:
2846
# The file doesn't exist, let's pretend it was empty
2847
self._load_from_string('')
2848
if section_name is None:
2849
section = self._config_obj
2851
section = self._config_obj.setdefault(section_name, {})
2852
return self.mutable_section_class(section_name, section)
2855
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
2856
# unlockable stores for use with objects that can already ensure the locking
2857
# (think branches). If different stores (not based on ConfigObj) are created,
2858
# they may face the same issue.
2861
class LockableIniFileStore(IniFileStore):
2862
"""A ConfigObjStore using locks on save to ensure store integrity."""
2864
def __init__(self, transport, file_name, lock_dir_name=None):
2865
"""A config Store using ConfigObj for storage.
2867
:param transport: The transport object where the config file is located.
2869
:param file_name: The config file basename in the transport directory.
2871
if lock_dir_name is None:
2872
lock_dir_name = 'lock'
2873
self.lock_dir_name = lock_dir_name
2874
super(LockableIniFileStore, self).__init__(transport, file_name)
2875
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
2877
def lock_write(self, token=None):
2878
"""Takes a write lock in the directory containing the config file.
2880
If the directory doesn't exist it is created.
2882
# FIXME: This doesn't check the ownership of the created directories as
2883
# ensure_config_dir_exists does. It should if the transport is local
2884
# -- vila 2011-04-06
2885
self.transport.create_prefix()
2886
return self._lock.lock_write(token)
2891
def break_lock(self):
2892
self._lock.break_lock()
2896
# We need to be able to override the undecorated implementation
2897
self.save_without_locking()
2899
def save_without_locking(self):
2900
super(LockableIniFileStore, self).save()
2903
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
2904
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
2905
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
2907
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
2908
# functions or a registry will make it easier and clearer for tests, focusing
2909
# on the relevant parts of the API that needs testing -- vila 20110503 (based
2910
# on a poolie's remark)
2911
class GlobalStore(LockableIniFileStore):
2913
def __init__(self, possible_transports=None):
2914
t = transport.get_transport_from_path(
2915
config_dir(), possible_transports=possible_transports)
2916
super(GlobalStore, self).__init__(t, 'bazaar.conf')
2919
class LocationStore(LockableIniFileStore):
2921
def __init__(self, possible_transports=None):
2922
t = transport.get_transport_from_path(
2923
config_dir(), possible_transports=possible_transports)
2924
super(LocationStore, self).__init__(t, 'locations.conf')
2927
class BranchStore(IniFileStore):
2929
def __init__(self, branch):
2930
super(BranchStore, self).__init__(branch.control_transport,
2932
self.branch = branch
2934
def lock_write(self, token=None):
2935
return self.branch.lock_write(token)
2938
return self.branch.unlock()
2942
# We need to be able to override the undecorated implementation
2943
self.save_without_locking()
2945
def save_without_locking(self):
2946
super(BranchStore, self).save()
2949
class ControlStore(LockableIniFileStore):
2951
def __init__(self, bzrdir):
2952
super(ControlStore, self).__init__(bzrdir.transport,
2954
lock_dir_name='branch_lock')
2957
class SectionMatcher(object):
2958
"""Select sections into a given Store.
2960
This is intended to be used to postpone getting an iterable of sections
2964
def __init__(self, store):
2967
def get_sections(self):
2968
# This is where we require loading the store so we can see all defined
2970
sections = self.store.get_sections()
2971
# Walk the revisions in the order provided
2976
def match(self, section):
2977
"""Does the proposed section match.
2979
:param section: A Section object.
2981
:returns: True if the section matches, False otherwise.
2983
raise NotImplementedError(self.match)
2986
class NameMatcher(SectionMatcher):
2988
def __init__(self, store, section_id):
2989
super(NameMatcher, self).__init__(store)
2990
self.section_id = section_id
2992
def match(self, section):
2993
return section.id == self.section_id
2996
class LocationSection(Section):
2998
def __init__(self, section, length, extra_path):
2999
super(LocationSection, self).__init__(section.id, section.options)
3000
self.length = length
3001
self.extra_path = extra_path
3003
def get(self, name, default=None):
3004
value = super(LocationSection, self).get(name, default)
3005
if value is not None:
3006
policy_name = self.get(name + ':policy', None)
3007
policy = _policy_value.get(policy_name, POLICY_NONE)
3008
if policy == POLICY_APPENDPATH:
3009
value = urlutils.join(value, self.extra_path)
3013
class LocationMatcher(SectionMatcher):
3015
def __init__(self, store, location):
3016
super(LocationMatcher, self).__init__(store)
3017
if location.startswith('file://'):
3018
location = urlutils.local_path_from_url(location)
3019
self.location = location
3021
def _get_matching_sections(self):
3022
"""Get all sections matching ``location``."""
3023
# We slightly diverge from LocalConfig here by allowing the no-name
3024
# section as the most generic one and the lower priority.
3025
no_name_section = None
3027
# Filter out the no_name_section so _iter_for_location_by_parts can be
3028
# used (it assumes all sections have a name).
3029
for section in self.store.get_sections():
3030
if section.id is None:
3031
no_name_section = section
3033
all_sections.append(section)
3034
# Unfortunately _iter_for_location_by_parts deals with section names so
3035
# we have to resync.
3036
filtered_sections = _iter_for_location_by_parts(
3037
[s.id for s in all_sections], self.location)
3038
iter_all_sections = iter(all_sections)
3039
matching_sections = []
3040
if no_name_section is not None:
3041
matching_sections.append(
3042
LocationSection(no_name_section, 0, self.location))
3043
for section_id, extra_path, length in filtered_sections:
3044
# a section id is unique for a given store so it's safe to take the
3045
# first matching section while iterating. Also, all filtered
3046
# sections are part of 'all_sections' and will always be found
3049
section = iter_all_sections.next()
3050
if section_id == section.id:
3051
matching_sections.append(
3052
LocationSection(section, length, extra_path))
3054
return matching_sections
3056
def get_sections(self):
3057
# Override the default implementation as we want to change the order
3058
matching_sections = self._get_matching_sections()
3059
# We want the longest (aka more specific) locations first
3060
sections = sorted(matching_sections,
3061
key=lambda section: (section.length, section.id),
3063
# Sections mentioning 'ignore_parents' restrict the selection
3064
for section in sections:
3065
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3066
ignore = section.get('ignore_parents', None)
3067
if ignore is not None:
3068
ignore = ui.bool_from_string(ignore)
3071
# Finally, we have a valid section
3075
class Stack(object):
3076
"""A stack of configurations where an option can be defined"""
3078
_option_ref_re = lazy_regex.lazy_compile('({[^{}]+})')
3079
"""Describes an exandable option reference.
3081
We want to match the most embedded reference first.
3083
I.e. for '{{foo}}' we will get '{foo}',
3084
for '{bar{baz}}' we will get '{baz}'
3087
def __init__(self, sections_def, store=None, mutable_section_name=None):
3088
"""Creates a stack of sections with an optional store for changes.
3090
:param sections_def: A list of Section or callables that returns an
3091
iterable of Section. This defines the Sections for the Stack and
3092
can be called repeatedly if needed.
3094
:param store: The optional Store where modifications will be
3095
recorded. If none is specified, no modifications can be done.
3097
:param mutable_section_name: The name of the MutableSection where
3098
changes are recorded. This requires the ``store`` parameter to be
3101
self.sections_def = sections_def
3103
self.mutable_section_name = mutable_section_name
3105
def get(self, name, expand=None):
3106
"""Return the *first* option value found in the sections.
3108
This is where we guarantee that sections coming from Store are loaded
3109
lazily: the loading is delayed until we need to either check that an
3110
option exists or get its value, which in turn may require to discover
3111
in which sections it can be defined. Both of these (section and option
3112
existence) require loading the store (even partially).
3114
:param name: The queried option.
3116
:param expand: Whether options references should be expanded.
3118
:returns: The value of the option.
3120
# FIXME: No caching of options nor sections yet -- vila 20110503
3122
expand = _get_expand_default_value()
3124
# Ensuring lazy loading is achieved by delaying section matching (which
3125
# implies querying the persistent storage) until it can't be avoided
3126
# anymore by using callables to describe (possibly empty) section
3128
for section_or_callable in self.sections_def:
3129
# Each section can expand to multiple ones when a callable is used
3130
if callable(section_or_callable):
3131
sections = section_or_callable()
3133
sections = [section_or_callable]
3134
for section in sections:
3135
value = section.get(name)
3136
if value is not None:
3138
if value is not None:
3140
# If the option is registered, it may provide additional info about
3143
opt = option_registry.get(name)
3147
def expand_and_convert(val):
3148
# This may need to be called twice if the value is None or ends up
3149
# being None during expansion or conversion.
3152
if isinstance(val, basestring):
3153
val = self._expand_options_in_string(val)
3155
trace.warning('Cannot expand "%s":'
3156
' %s does not support option expansion'
3157
% (name, type(val)))
3159
val = opt.convert_from_unicode(val)
3161
value = expand_and_convert(value)
3162
if opt is not None and value is None:
3163
# If the option is registered, it may provide a default value
3164
value = opt.get_default()
3165
value = expand_and_convert(value)
3166
for hook in ConfigHooks['get']:
3167
hook(self, name, value)
3170
def expand_options(self, string, env=None):
3171
"""Expand option references in the string in the configuration context.
3173
:param string: The string containing option(s) to expand.
3175
:param env: An option dict defining additional configuration options or
3176
overriding existing ones.
3178
:returns: The expanded string.
3180
return self._expand_options_in_string(string, env)
3182
def _expand_options_in_string(self, string, env=None, _refs=None):
3183
"""Expand options in the string in the configuration context.
3185
:param string: The string to be expanded.
3187
:param env: An option dict defining additional configuration options or
3188
overriding existing ones.
3190
:param _refs: Private list (FIFO) containing the options being expanded
3193
:returns: The expanded string.
3196
# Not much to expand there
3199
# What references are currently resolved (to detect loops)
3202
# We need to iterate until no more refs appear ({{foo}} will need two
3203
# iterations for example).
3205
raw_chunks = Stack._option_ref_re.split(result)
3206
if len(raw_chunks) == 1:
3207
# Shorcut the trivial case: no refs
3210
# Split will isolate refs so that every other chunk is a ref
3211
chunk_is_ref = False
3212
for chunk in raw_chunks:
3213
if not chunk_is_ref:
3214
chunks.append(chunk)
3219
raise errors.OptionExpansionLoop(string, _refs)
3221
value = self._expand_option(name, env, _refs)
3223
raise errors.ExpandingUnknownOption(name, string)
3224
chunks.append(value)
3226
chunk_is_ref = False
3227
result = ''.join(chunks)
3230
def _expand_option(self, name, env, _refs):
3231
if env is not None and name in env:
3232
# Special case, values provided in env takes precedence over
3236
# FIXME: This is a limited implementation, what we really need is a
3237
# way to query the bzr config for the value of an option,
3238
# respecting the scope rules (That is, once we implement fallback
3239
# configs, getting the option value should restart from the top
3240
# config, not the current one) -- vila 20101222
3241
value = self.get(name, expand=False)
3242
value = self._expand_options_in_string(value, env, _refs)
3245
def _get_mutable_section(self):
3246
"""Get the MutableSection for the Stack.
3248
This is where we guarantee that the mutable section is lazily loaded:
3249
this means we won't load the corresponding store before setting a value
3250
or deleting an option. In practice the store will often be loaded but
3251
this allows helps catching some programming errors.
3253
section = self.store.get_mutable_section(self.mutable_section_name)
3256
def set(self, name, value):
3257
"""Set a new value for the option."""
3258
section = self._get_mutable_section()
3259
section.set(name, value)
3260
for hook in ConfigHooks['set']:
3261
hook(self, name, value)
3263
def remove(self, name):
3264
"""Remove an existing option."""
3265
section = self._get_mutable_section()
3266
section.remove(name)
3267
for hook in ConfigHooks['remove']:
3271
# Mostly for debugging use
3272
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3275
class _CompatibleStack(Stack):
3276
"""Place holder for compatibility with previous design.
3278
This is intended to ease the transition from the Config-based design to the
3279
Stack-based design and should not be used nor relied upon by plugins.
3281
One assumption made here is that the daughter classes will all use Stores
3282
derived from LockableIniFileStore).
3284
It implements set() by re-loading the store before applying the
3285
modification and saving it.
3287
The long term plan being to implement a single write by store to save
3288
all modifications, this class should not be used in the interim.
3291
def set(self, name, value):
3294
super(_CompatibleStack, self).set(name, value)
3295
# Force a write to persistent storage
3299
class GlobalStack(_CompatibleStack):
3300
"""Global options only stack."""
3304
gstore = GlobalStore()
3305
super(GlobalStack, self).__init__(
3306
[bzrlib.global_state.cmdline_overrides, gstore.get_sections],
3310
class LocationStack(_CompatibleStack):
3311
"""Per-location options falling back to global options stack."""
3313
def __init__(self, location):
3314
"""Make a new stack for a location and global configuration.
3316
:param location: A URL prefix to """
3317
lstore = LocationStore()
3318
matcher = LocationMatcher(lstore, location)
3319
gstore = GlobalStore()
3320
super(LocationStack, self).__init__(
3321
[bzrlib.global_state.cmdline_overrides,
3322
matcher.get_sections, gstore.get_sections],
3326
class BranchStack(_CompatibleStack):
3327
"""Per-location options falling back to branch then global options stack."""
3329
def __init__(self, branch):
3330
bstore = BranchStore(branch)
3331
lstore = LocationStore()
3332
matcher = LocationMatcher(lstore, branch.base)
3333
gstore = GlobalStore()
3334
super(BranchStack, self).__init__(
3335
[bzrlib.global_state.cmdline_overrides,
3336
matcher.get_sections, bstore.get_sections, gstore.get_sections],
3338
self.branch = branch
3341
class RemoteControlStack(_CompatibleStack):
3342
"""Remote control-only options stack."""
3344
def __init__(self, bzrdir):
3345
cstore = ControlStore(bzrdir)
3346
super(RemoteControlStack, self).__init__(
3347
[cstore.get_sections],
3349
self.bzrdir = bzrdir
3352
class RemoteBranchStack(_CompatibleStack):
3353
"""Remote branch-only options stack."""
3355
def __init__(self, branch):
3356
bstore = BranchStore(branch)
3357
super(RemoteBranchStack, self).__init__(
3358
[bstore.get_sections],
3360
self.branch = branch
3363
class cmd_config(commands.Command):
3364
__doc__ = """Display, set or remove a configuration option.
3366
Display the active value for a given option.
3368
If --all is specified, NAME is interpreted as a regular expression and all
3369
matching options are displayed mentioning their scope. The active value
3370
that bzr will take into account is the first one displayed for each option.
3372
If no NAME is given, --all .* is implied.
3374
Setting a value is achieved by using name=value without spaces. The value
3375
is set in the most relevant scope and can be checked by displaying the
3379
takes_args = ['name?']
3383
# FIXME: This should be a registry option so that plugins can register
3384
# their own config files (or not) -- vila 20101002
3385
commands.Option('scope', help='Reduce the scope to the specified'
3386
' configuration file',
3388
commands.Option('all',
3389
help='Display all the defined values for the matching options.',
3391
commands.Option('remove', help='Remove the option from'
3392
' the configuration file'),
3395
_see_also = ['configuration']
3397
@commands.display_command
3398
def run(self, name=None, all=False, directory=None, scope=None,
3400
if directory is None:
3402
directory = urlutils.normalize_url(directory)
3404
raise errors.BzrError(
3405
'--all and --remove are mutually exclusive.')
3407
# Delete the option in the given scope
3408
self._remove_config_option(name, directory, scope)
3410
# Defaults to all options
3411
self._show_matching_options('.*', directory, scope)
3414
name, value = name.split('=', 1)
3416
# Display the option(s) value(s)
3418
self._show_matching_options(name, directory, scope)
3420
self._show_value(name, directory, scope)
3423
raise errors.BzrError(
3424
'Only one option can be set.')
3425
# Set the option value
3426
self._set_config_option(name, value, directory, scope)
3428
def _get_configs(self, directory, scope=None):
3429
"""Iterate the configurations specified by ``directory`` and ``scope``.
3431
:param directory: Where the configurations are derived from.
3433
:param scope: A specific config to start from.
3435
if scope is not None:
3436
if scope == 'bazaar':
3437
yield GlobalConfig()
3438
elif scope == 'locations':
3439
yield LocationConfig(directory)
3440
elif scope == 'branch':
3441
(_, br, _) = bzrdir.BzrDir.open_containing_tree_or_branch(
3443
yield br.get_config()
3446
(_, br, _) = bzrdir.BzrDir.open_containing_tree_or_branch(
3448
yield br.get_config()
3449
except errors.NotBranchError:
3450
yield LocationConfig(directory)
3451
yield GlobalConfig()
3453
def _show_value(self, name, directory, scope):
3455
for c in self._get_configs(directory, scope):
3458
for (oname, value, section, conf_id, parser) in c._get_options():
3460
# Display only the first value and exit
3462
# FIXME: We need to use get_user_option to take policies
3463
# into account and we need to make sure the option exists
3464
# too (hence the two for loops), this needs a better API
3466
value = c.get_user_option(name)
3467
# Quote the value appropriately
3468
value = parser._quote(value)
3469
self.outf.write('%s\n' % (value,))
3473
raise errors.NoSuchConfigOption(name)
3475
def _show_matching_options(self, name, directory, scope):
3476
name = lazy_regex.lazy_compile(name)
3477
# We want any error in the regexp to be raised *now* so we need to
3478
# avoid the delay introduced by the lazy regexp. But, we still do
3479
# want the nicer errors raised by lazy_regex.
3480
name._compile_and_collapse()
3483
for c in self._get_configs(directory, scope):
3484
for (oname, value, section, conf_id, parser) in c._get_options():
3485
if name.search(oname):
3486
if cur_conf_id != conf_id:
3487
# Explain where the options are defined
3488
self.outf.write('%s:\n' % (conf_id,))
3489
cur_conf_id = conf_id
3491
if (section not in (None, 'DEFAULT')
3492
and cur_section != section):
3493
# Display the section if it's not the default (or only)
3495
self.outf.write(' [%s]\n' % (section,))
3496
cur_section = section
3497
self.outf.write(' %s = %s\n' % (oname, value))
3499
def _set_config_option(self, name, value, directory, scope):
3500
for conf in self._get_configs(directory, scope):
3501
conf.set_user_option(name, value)
3504
raise errors.NoSuchConfig(scope)
3506
def _remove_config_option(self, name, directory, scope):
3508
raise errors.BzrCommandError(
3509
'--remove expects an option to remove.')
3511
for conf in self._get_configs(directory, scope):
3512
for (section_name, section, conf_id) in conf._get_sections():
3513
if scope is not None and conf_id != scope:
3514
# Not the right configuration file
3517
if conf_id != conf.config_id():
3518
conf = self._get_configs(directory, conf_id).next()
3519
# We use the first section in the first config where the
3520
# option is defined to remove it
3521
conf.remove_user_option(name, section_name)
3526
raise errors.NoSuchConfig(scope)
3528
raise errors.NoSuchConfigOption(name)
3532
# We need adapters that can build a Store or a Stack in a test context. Test
3533
# classes, based on TestCaseWithTransport, can use the registry to parametrize
3534
# themselves. The builder will receive a test instance and should return a
3535
# ready-to-use store or stack. Plugins that define new store/stacks can also
3536
# register themselves here to be tested against the tests defined in
3537
# bzrlib.tests.test_config. Note that the builder can be called multiple times
3538
# for the same tests.
3540
# The registered object should be a callable receiving a test instance
3541
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
3543
test_store_builder_registry = registry.Registry()
3545
# The registered object should be a callable receiving a test instance
3546
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
3548
test_stack_builder_registry = registry.Registry()