1578
2259
configobj[name] = value
1580
2261
configobj.setdefault(section, {})[name] = value
2262
for hook in OldConfigHooks['set']:
2263
hook(self, name, value)
2264
self._set_configobj(configobj)
2266
def remove_option(self, option_name, section_name=None):
2267
configobj = self._get_configobj()
2268
if section_name is None:
2269
del configobj[option_name]
2271
del configobj[section_name][option_name]
2272
for hook in OldConfigHooks['remove']:
2273
hook(self, option_name)
1581
2274
self._set_configobj(configobj)
1583
2276
def _get_config_file(self):
1585
return StringIO(self._transport.get_bytes(self._filename))
2278
f = StringIO(self._transport.get_bytes(self._filename))
2279
for hook in OldConfigHooks['load']:
1586
2282
except errors.NoSuchFile:
1587
2283
return StringIO()
2284
except errors.PermissionDenied, e:
2285
trace.warning("Permission denied while trying to open "
2286
"configuration file %s.", urlutils.unescape_for_display(
2287
urlutils.join(self._transport.base, self._filename), "utf-8"))
2290
def _external_url(self):
2291
return urlutils.join(self._transport.external_url(), self._filename)
1589
2293
def _get_configobj(self):
1590
2294
f = self._get_config_file()
1592
return ConfigObj(f, encoding='utf-8')
2297
conf = ConfigObj(f, encoding='utf-8')
2298
except configobj.ConfigObjError, e:
2299
raise errors.ParseConfigError(e.errors, self._external_url())
2300
except UnicodeDecodeError:
2301
raise errors.ConfigContentError(self._external_url())
1596
2306
def _set_configobj(self, configobj):
1597
2307
out_file = StringIO()
1598
2308
configobj.write(out_file)
1599
2309
out_file.seek(0)
1600
2310
self._transport.put_file(self._filename, out_file)
2311
for hook in OldConfigHooks['save']:
2315
class Option(object):
2316
"""An option definition.
2318
The option *values* are stored in config files and found in sections.
2320
Here we define various properties about the option itself, its default
2321
value, how to convert it from stores, what to do when invalid values are
2322
encoutered, in which config files it can be stored.
2325
def __init__(self, name, default=None, default_from_env=None,
2327
from_unicode=None, invalid=None):
2328
"""Build an option definition.
2330
:param name: the name used to refer to the option.
2332
:param default: the default value to use when none exist in the config
2333
stores. This is either a string that ``from_unicode`` will convert
2334
into the proper type or a python object that can be stringified (so
2335
only the empty list is supported for example).
2337
:param default_from_env: A list of environment variables which can
2338
provide a default value. 'default' will be used only if none of the
2339
variables specified here are set in the environment.
2341
:param help: a doc string to explain the option to the user.
2343
:param from_unicode: a callable to convert the unicode string
2344
representing the option value in a store. This is not called for
2347
:param invalid: the action to be taken when an invalid value is
2348
encountered in a store. This is called only when from_unicode is
2349
invoked to convert a string and returns None or raise ValueError or
2350
TypeError. Accepted values are: None (ignore invalid values),
2351
'warning' (emit a warning), 'error' (emit an error message and
2354
if default_from_env is None:
2355
default_from_env = []
2357
# Convert the default value to a unicode string so all values are
2358
# strings internally before conversion (via from_unicode) is attempted.
2361
elif isinstance(default, list):
2362
# Only the empty list is supported
2364
raise AssertionError(
2365
'Only empty lists are supported as default values')
2367
elif isinstance(default, (str, unicode, bool, int, float)):
2368
# Rely on python to convert strings, booleans and integers
2369
self.default = u'%s' % (default,)
2371
# other python objects are not expected
2372
raise AssertionError('%r is not supported as a default value'
2374
self.default_from_env = default_from_env
2376
self.from_unicode = from_unicode
2377
if invalid and invalid not in ('warning', 'error'):
2378
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2379
self.invalid = invalid
2381
def convert_from_unicode(self, unicode_value):
2382
if self.from_unicode is None or unicode_value is None:
2383
# Don't convert or nothing to convert
2384
return unicode_value
2386
converted = self.from_unicode(unicode_value)
2387
except (ValueError, TypeError):
2388
# Invalid values are ignored
2390
if converted is None and self.invalid is not None:
2391
# The conversion failed
2392
if self.invalid == 'warning':
2393
trace.warning('Value "%s" is not valid for "%s"',
2394
unicode_value, self.name)
2395
elif self.invalid == 'error':
2396
raise errors.ConfigOptionValueError(self.name, unicode_value)
2399
def get_default(self):
2401
for var in self.default_from_env:
2403
# If the env variable is defined, its value is the default one
2404
value = os.environ[var]
2409
# Otherwise, fallback to the value defined at registration
2410
value = self.default
2413
def get_help_text(self, additional_see_also=None, plain=True):
2415
from bzrlib import help_topics
2416
result += help_topics._format_see_also(additional_see_also)
2418
result = help_topics.help_as_plain_text(result)
2422
# Predefined converters to get proper values from store
2424
def bool_from_store(unicode_str):
2425
return ui.bool_from_string(unicode_str)
2428
def int_from_store(unicode_str):
2429
return int(unicode_str)
2432
def float_from_store(unicode_str):
2433
return float(unicode_str)
2437
# Use a an empty dict to initialize an empty configobj avoiding all
2438
# parsing and encoding checks
2439
_list_converter_config = configobj.ConfigObj(
2440
{}, encoding='utf-8', list_values=True, interpolation=False)
2443
def list_from_store(unicode_str):
2444
if not isinstance(unicode_str, basestring):
2446
# Now inject our string directly as unicode. All callers got their value
2447
# from configobj, so values that need to be quoted are already properly
2449
_list_converter_config.reset()
2450
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2451
maybe_list = _list_converter_config['list']
2452
# ConfigObj return '' instead of u''. Use 'str' below to catch all cases.
2453
if isinstance(maybe_list, basestring):
2455
# A single value, most probably the user forgot (or didn't care to
2456
# add) the final ','
2459
# The empty string, convert to empty list
2462
# We rely on ConfigObj providing us with a list already
2467
class OptionRegistry(registry.Registry):
2468
"""Register config options by their name.
2470
This overrides ``registry.Registry`` to simplify registration by acquiring
2471
some information from the option object itself.
2474
def register(self, option):
2475
"""Register a new option to its name.
2477
:param option: The option to register. Its name is used as the key.
2479
super(OptionRegistry, self).register(option.name, option,
2482
def register_lazy(self, key, module_name, member_name):
2483
"""Register a new option to be loaded on request.
2485
:param key: the key to request the option later. Since the registration
2486
is lazy, it should be provided and match the option name.
2488
:param module_name: the python path to the module. Such as 'os.path'.
2490
:param member_name: the member of the module to return. If empty or
2491
None, get() will return the module itself.
2493
super(OptionRegistry, self).register_lazy(key,
2494
module_name, member_name)
2496
def get_help(self, key=None):
2497
"""Get the help text associated with the given key"""
2498
option = self.get(key)
2499
the_help = option.help
2500
if callable(the_help):
2501
return the_help(self, key)
2505
option_registry = OptionRegistry()
2508
# Registered options in lexicographical order
2510
option_registry.register(
2511
Option('bzr.workingtree.worth_saving_limit', default=10,
2512
from_unicode=int_from_store, invalid='warning',
2514
How many changes before saving the dirstate.
2516
-1 means that we will never rewrite the dirstate file for only
2517
stat-cache changes. Regardless of this setting, we will always rewrite
2518
the dirstate file if a file is added/removed/renamed/etc. This flag only
2519
affects the behavior of updating the dirstate file after we notice that
2520
a file has been touched.
2522
option_registry.register(
2523
Option('dirstate.fdatasync', default=True,
2524
from_unicode=bool_from_store,
2526
Flush dirstate changes onto physical disk?
2528
If true (default), working tree metadata changes are flushed through the
2529
OS buffers to physical disk. This is somewhat slower, but means data
2530
should not be lost if the machine crashes. See also repository.fdatasync.
2532
option_registry.register(
2533
Option('debug_flags', default=[], from_unicode=list_from_store,
2534
help='Debug flags to activate.'))
2535
option_registry.register(
2536
Option('default_format', default='2a',
2537
help='Format used when creating branches.'))
2538
option_registry.register(
2539
Option('dpush_strict', default=None,
2540
from_unicode=bool_from_store,
2542
The default value for ``dpush --strict``.
2544
If present, defines the ``--strict`` option default value for checking
2545
uncommitted changes before pushing into a different VCS without any
2546
custom bzr metadata.
2548
option_registry.register(
2550
help='The command called to launch an editor to enter a message.'))
2551
option_registry.register(
2552
Option('ignore_missing_extensions', default=False,
2553
from_unicode=bool_from_store,
2555
Control the missing extensions warning display.
2557
The warning will not be emitted if set to True.
2559
option_registry.register(
2561
help='Language to translate messages into.'))
2562
option_registry.register(
2563
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2565
Steal locks that appears to be dead.
2567
If set to True, bzr will check if a lock is supposed to be held by an
2568
active process from the same user on the same machine. If the user and
2569
machine match, but no process with the given PID is active, then bzr
2570
will automatically break the stale lock, and create a new lock for
2572
Otherwise, bzr will prompt as normal to break the lock.
2574
option_registry.register(
2575
Option('output_encoding',
2576
help= 'Unicode encoding for output'
2577
' (terminal encoding if not specified).'))
2578
option_registry.register(
2579
Option('push_strict', default=None,
2580
from_unicode=bool_from_store,
2582
The default value for ``push --strict``.
2584
If present, defines the ``--strict`` option default value for checking
2585
uncommitted changes before sending a merge directive.
2587
option_registry.register(
2588
Option('repository.fdatasync', default=True,
2589
from_unicode=bool_from_store,
2591
Flush repository changes onto physical disk?
2593
If true (default), repository changes are flushed through the OS buffers
2594
to physical disk. This is somewhat slower, but means data should not be
2595
lost if the machine crashes. See also dirstate.fdatasync.
2597
option_registry.register(
2598
Option('send_strict', default=None,
2599
from_unicode=bool_from_store,
2601
The default value for ``send --strict``.
2603
If present, defines the ``--strict`` option default value for checking
2604
uncommitted changes before pushing.
2607
option_registry.register(
2608
Option('serve.client_timeout',
2609
default=300.0, from_unicode=float_from_store,
2610
help="If we wait for a new request from a client for more than"
2611
" X seconds, consider the client idle, and hangup."))
2614
class Section(object):
2615
"""A section defines a dict of option name => value.
2617
This is merely a read-only dict which can add some knowledge about the
2618
options. It is *not* a python dict object though and doesn't try to mimic
2622
def __init__(self, section_id, options):
2623
self.id = section_id
2624
# We re-use the dict-like object received
2625
self.options = options
2627
def get(self, name, default=None):
2628
return self.options.get(name, default)
2631
# Mostly for debugging use
2632
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2635
_NewlyCreatedOption = object()
2636
"""Was the option created during the MutableSection lifetime"""
2639
class MutableSection(Section):
2640
"""A section allowing changes and keeping track of the original values."""
2642
def __init__(self, section_id, options):
2643
super(MutableSection, self).__init__(section_id, options)
2646
def set(self, name, value):
2647
if name not in self.options:
2648
# This is a new option
2649
self.orig[name] = _NewlyCreatedOption
2650
elif name not in self.orig:
2651
self.orig[name] = self.get(name, None)
2652
self.options[name] = value
2654
def remove(self, name):
2655
if name not in self.orig:
2656
self.orig[name] = self.get(name, None)
2657
del self.options[name]
2660
class CommandLineSection(MutableSection):
2661
"""A section used to carry command line overrides for the config options."""
2663
def __init__(self, opts=None):
2666
super(CommandLineSection, self).__init__('cmdline-overrides', opts)
2669
# The dict should be cleared but not replaced so it can be shared.
2670
self.options.clear()
2672
def _from_cmdline(self, overrides):
2673
# Reset before accepting new definitions
2675
for over in overrides:
2677
name, value = over.split('=', 1)
2679
raise errors.BzrCommandError(
2680
gettext("Invalid '%s', should be of the form 'name=value'")
2682
self.set(name, value)
2685
class Store(object):
2686
"""Abstract interface to persistent storage for configuration options."""
2688
readonly_section_class = Section
2689
mutable_section_class = MutableSection
2691
def is_loaded(self):
2692
"""Returns True if the Store has been loaded.
2694
This is used to implement lazy loading and ensure the persistent
2695
storage is queried only when needed.
2697
raise NotImplementedError(self.is_loaded)
2700
"""Loads the Store from persistent storage."""
2701
raise NotImplementedError(self.load)
2703
def _load_from_string(self, bytes):
2704
"""Create a store from a string in configobj syntax.
2706
:param bytes: A string representing the file content.
2708
raise NotImplementedError(self._load_from_string)
2711
"""Unloads the Store.
2713
This should make is_loaded() return False. This is used when the caller
2714
knows that the persistent storage has changed or may have change since
2717
raise NotImplementedError(self.unload)
2720
"""Saves the Store to persistent storage."""
2721
raise NotImplementedError(self.save)
2723
def external_url(self):
2724
raise NotImplementedError(self.external_url)
2726
def get_sections(self):
2727
"""Returns an ordered iterable of existing sections.
2729
:returns: An iterable of (name, dict).
2731
raise NotImplementedError(self.get_sections)
2733
def get_mutable_section(self, section_name=None):
2734
"""Returns the specified mutable section.
2736
:param section_name: The section identifier
2738
raise NotImplementedError(self.get_mutable_section)
2741
# Mostly for debugging use
2742
return "<config.%s(%s)>" % (self.__class__.__name__,
2743
self.external_url())
2746
class IniFileStore(Store):
2747
"""A config Store using ConfigObj for storage.
2749
:ivar transport: The transport object where the config file is located.
2751
:ivar file_name: The config file basename in the transport directory.
2753
:ivar _config_obj: Private member to hold the ConfigObj instance used to
2754
serialize/deserialize the config file.
2757
def __init__(self, transport, file_name):
2758
"""A config Store using ConfigObj for storage.
2760
:param transport: The transport object where the config file is located.
2762
:param file_name: The config file basename in the transport directory.
2764
super(IniFileStore, self).__init__()
2765
self.transport = transport
2766
self.file_name = file_name
2767
self._config_obj = None
2769
def is_loaded(self):
2770
return self._config_obj != None
2773
self._config_obj = None
2776
"""Load the store from the associated file."""
2777
if self.is_loaded():
2780
content = self.transport.get_bytes(self.file_name)
2781
except errors.PermissionDenied:
2782
trace.warning("Permission denied while trying to load "
2783
"configuration store %s.", self.external_url())
2785
self._load_from_string(content)
2786
for hook in ConfigHooks['load']:
2789
def _load_from_string(self, bytes):
2790
"""Create a config store from a string.
2792
:param bytes: A string representing the file content.
2794
if self.is_loaded():
2795
raise AssertionError('Already loaded: %r' % (self._config_obj,))
2796
co_input = StringIO(bytes)
2798
# The config files are always stored utf8-encoded
2799
self._config_obj = ConfigObj(co_input, encoding='utf-8',
2801
except configobj.ConfigObjError, e:
2802
self._config_obj = None
2803
raise errors.ParseConfigError(e.errors, self.external_url())
2804
except UnicodeDecodeError:
2805
raise errors.ConfigContentError(self.external_url())
2808
if not self.is_loaded():
2812
self._config_obj.write(out)
2813
self.transport.put_bytes(self.file_name, out.getvalue())
2814
for hook in ConfigHooks['save']:
2817
def external_url(self):
2818
# FIXME: external_url should really accepts an optional relpath
2819
# parameter (bug #750169) :-/ -- vila 2011-04-04
2820
# The following will do in the interim but maybe we don't want to
2821
# expose a path here but rather a config ID and its associated
2822
# object </hand wawe>.
2823
return urlutils.join(self.transport.external_url(), self.file_name)
2825
def get_sections(self):
2826
"""Get the configobj section in the file order.
2828
:returns: An iterable of (name, dict).
2830
# We need a loaded store
2833
except (errors.NoSuchFile, errors.PermissionDenied):
2834
# If the file can't be read, there is no sections
2836
cobj = self._config_obj
2838
yield self.readonly_section_class(None, cobj)
2839
for section_name in cobj.sections:
2840
yield self.readonly_section_class(section_name, cobj[section_name])
2842
def get_mutable_section(self, section_name=None):
2843
# We need a loaded store
2846
except errors.NoSuchFile:
2847
# The file doesn't exist, let's pretend it was empty
2848
self._load_from_string('')
2849
if section_name is None:
2850
section = self._config_obj
2852
section = self._config_obj.setdefault(section_name, {})
2853
return self.mutable_section_class(section_name, section)
2856
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
2857
# unlockable stores for use with objects that can already ensure the locking
2858
# (think branches). If different stores (not based on ConfigObj) are created,
2859
# they may face the same issue.
2862
class LockableIniFileStore(IniFileStore):
2863
"""A ConfigObjStore using locks on save to ensure store integrity."""
2865
def __init__(self, transport, file_name, lock_dir_name=None):
2866
"""A config Store using ConfigObj for storage.
2868
:param transport: The transport object where the config file is located.
2870
:param file_name: The config file basename in the transport directory.
2872
if lock_dir_name is None:
2873
lock_dir_name = 'lock'
2874
self.lock_dir_name = lock_dir_name
2875
super(LockableIniFileStore, self).__init__(transport, file_name)
2876
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
2878
def lock_write(self, token=None):
2879
"""Takes a write lock in the directory containing the config file.
2881
If the directory doesn't exist it is created.
2883
# FIXME: This doesn't check the ownership of the created directories as
2884
# ensure_config_dir_exists does. It should if the transport is local
2885
# -- vila 2011-04-06
2886
self.transport.create_prefix()
2887
return self._lock.lock_write(token)
2892
def break_lock(self):
2893
self._lock.break_lock()
2897
# We need to be able to override the undecorated implementation
2898
self.save_without_locking()
2900
def save_without_locking(self):
2901
super(LockableIniFileStore, self).save()
2904
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
2905
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
2906
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
2908
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
2909
# functions or a registry will make it easier and clearer for tests, focusing
2910
# on the relevant parts of the API that needs testing -- vila 20110503 (based
2911
# on a poolie's remark)
2912
class GlobalStore(LockableIniFileStore):
2914
def __init__(self, possible_transports=None):
2915
t = transport.get_transport_from_path(
2916
config_dir(), possible_transports=possible_transports)
2917
super(GlobalStore, self).__init__(t, 'bazaar.conf')
2920
class LocationStore(LockableIniFileStore):
2922
def __init__(self, possible_transports=None):
2923
t = transport.get_transport_from_path(
2924
config_dir(), possible_transports=possible_transports)
2925
super(LocationStore, self).__init__(t, 'locations.conf')
2928
class BranchStore(IniFileStore):
2930
def __init__(self, branch):
2931
super(BranchStore, self).__init__(branch.control_transport,
2933
self.branch = branch
2935
def lock_write(self, token=None):
2936
return self.branch.lock_write(token)
2939
return self.branch.unlock()
2943
# We need to be able to override the undecorated implementation
2944
self.save_without_locking()
2946
def save_without_locking(self):
2947
super(BranchStore, self).save()
2950
class ControlStore(LockableIniFileStore):
2952
def __init__(self, bzrdir):
2953
super(ControlStore, self).__init__(bzrdir.transport,
2955
lock_dir_name='branch_lock')
2958
class SectionMatcher(object):
2959
"""Select sections into a given Store.
2961
This is intended to be used to postpone getting an iterable of sections
2965
def __init__(self, store):
2968
def get_sections(self):
2969
# This is where we require loading the store so we can see all defined
2971
sections = self.store.get_sections()
2972
# Walk the revisions in the order provided
2977
def match(self, section):
2978
"""Does the proposed section match.
2980
:param section: A Section object.
2982
:returns: True if the section matches, False otherwise.
2984
raise NotImplementedError(self.match)
2987
class NameMatcher(SectionMatcher):
2989
def __init__(self, store, section_id):
2990
super(NameMatcher, self).__init__(store)
2991
self.section_id = section_id
2993
def match(self, section):
2994
return section.id == self.section_id
2997
class LocationSection(Section):
2999
def __init__(self, section, length, extra_path):
3000
super(LocationSection, self).__init__(section.id, section.options)
3001
self.length = length
3002
self.extra_path = extra_path
3004
def get(self, name, default=None):
3005
value = super(LocationSection, self).get(name, default)
3006
if value is not None:
3007
policy_name = self.get(name + ':policy', None)
3008
policy = _policy_value.get(policy_name, POLICY_NONE)
3009
if policy == POLICY_APPENDPATH:
3010
value = urlutils.join(value, self.extra_path)
3014
class LocationMatcher(SectionMatcher):
3016
def __init__(self, store, location):
3017
super(LocationMatcher, self).__init__(store)
3018
if location.startswith('file://'):
3019
location = urlutils.local_path_from_url(location)
3020
self.location = location
3022
def _get_matching_sections(self):
3023
"""Get all sections matching ``location``."""
3024
# We slightly diverge from LocalConfig here by allowing the no-name
3025
# section as the most generic one and the lower priority.
3026
no_name_section = None
3028
# Filter out the no_name_section so _iter_for_location_by_parts can be
3029
# used (it assumes all sections have a name).
3030
for section in self.store.get_sections():
3031
if section.id is None:
3032
no_name_section = section
3034
all_sections.append(section)
3035
# Unfortunately _iter_for_location_by_parts deals with section names so
3036
# we have to resync.
3037
filtered_sections = _iter_for_location_by_parts(
3038
[s.id for s in all_sections], self.location)
3039
iter_all_sections = iter(all_sections)
3040
matching_sections = []
3041
if no_name_section is not None:
3042
matching_sections.append(
3043
LocationSection(no_name_section, 0, self.location))
3044
for section_id, extra_path, length in filtered_sections:
3045
# a section id is unique for a given store so it's safe to take the
3046
# first matching section while iterating. Also, all filtered
3047
# sections are part of 'all_sections' and will always be found
3050
section = iter_all_sections.next()
3051
if section_id == section.id:
3052
matching_sections.append(
3053
LocationSection(section, length, extra_path))
3055
return matching_sections
3057
def get_sections(self):
3058
# Override the default implementation as we want to change the order
3059
matching_sections = self._get_matching_sections()
3060
# We want the longest (aka more specific) locations first
3061
sections = sorted(matching_sections,
3062
key=lambda section: (section.length, section.id),
3064
# Sections mentioning 'ignore_parents' restrict the selection
3065
for section in sections:
3066
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3067
ignore = section.get('ignore_parents', None)
3068
if ignore is not None:
3069
ignore = ui.bool_from_string(ignore)
3072
# Finally, we have a valid section
3076
class Stack(object):
3077
"""A stack of configurations where an option can be defined"""
3079
_option_ref_re = lazy_regex.lazy_compile('({[^{}]+})')
3080
"""Describes an exandable option reference.
3082
We want to match the most embedded reference first.
3084
I.e. for '{{foo}}' we will get '{foo}',
3085
for '{bar{baz}}' we will get '{baz}'
3088
def __init__(self, sections_def, store=None, mutable_section_name=None):
3089
"""Creates a stack of sections with an optional store for changes.
3091
:param sections_def: A list of Section or callables that returns an
3092
iterable of Section. This defines the Sections for the Stack and
3093
can be called repeatedly if needed.
3095
:param store: The optional Store where modifications will be
3096
recorded. If none is specified, no modifications can be done.
3098
:param mutable_section_name: The name of the MutableSection where
3099
changes are recorded. This requires the ``store`` parameter to be
3102
self.sections_def = sections_def
3104
self.mutable_section_name = mutable_section_name
3106
def get(self, name, expand=None):
3107
"""Return the *first* option value found in the sections.
3109
This is where we guarantee that sections coming from Store are loaded
3110
lazily: the loading is delayed until we need to either check that an
3111
option exists or get its value, which in turn may require to discover
3112
in which sections it can be defined. Both of these (section and option
3113
existence) require loading the store (even partially).
3115
:param name: The queried option.
3117
:param expand: Whether options references should be expanded.
3119
:returns: The value of the option.
3121
# FIXME: No caching of options nor sections yet -- vila 20110503
3123
expand = _get_expand_default_value()
3125
# Ensuring lazy loading is achieved by delaying section matching (which
3126
# implies querying the persistent storage) until it can't be avoided
3127
# anymore by using callables to describe (possibly empty) section
3129
for section_or_callable in self.sections_def:
3130
# Each section can expand to multiple ones when a callable is used
3131
if callable(section_or_callable):
3132
sections = section_or_callable()
3134
sections = [section_or_callable]
3135
for section in sections:
3136
value = section.get(name)
3137
if value is not None:
3139
if value is not None:
3141
# If the option is registered, it may provide additional info about
3144
opt = option_registry.get(name)
3148
def expand_and_convert(val):
3149
# This may need to be called twice if the value is None or ends up
3150
# being None during expansion or conversion.
3153
if isinstance(val, basestring):
3154
val = self._expand_options_in_string(val)
3156
trace.warning('Cannot expand "%s":'
3157
' %s does not support option expansion'
3158
% (name, type(val)))
3160
val = opt.convert_from_unicode(val)
3162
value = expand_and_convert(value)
3163
if opt is not None and value is None:
3164
# If the option is registered, it may provide a default value
3165
value = opt.get_default()
3166
value = expand_and_convert(value)
3167
for hook in ConfigHooks['get']:
3168
hook(self, name, value)
3171
def expand_options(self, string, env=None):
3172
"""Expand option references in the string in the configuration context.
3174
:param string: The string containing option(s) to expand.
3176
:param env: An option dict defining additional configuration options or
3177
overriding existing ones.
3179
:returns: The expanded string.
3181
return self._expand_options_in_string(string, env)
3183
def _expand_options_in_string(self, string, env=None, _refs=None):
3184
"""Expand options in the string in the configuration context.
3186
:param string: The string to be expanded.
3188
:param env: An option dict defining additional configuration options or
3189
overriding existing ones.
3191
:param _refs: Private list (FIFO) containing the options being expanded
3194
:returns: The expanded string.
3197
# Not much to expand there
3200
# What references are currently resolved (to detect loops)
3203
# We need to iterate until no more refs appear ({{foo}} will need two
3204
# iterations for example).
3206
raw_chunks = Stack._option_ref_re.split(result)
3207
if len(raw_chunks) == 1:
3208
# Shorcut the trivial case: no refs
3211
# Split will isolate refs so that every other chunk is a ref
3212
chunk_is_ref = False
3213
for chunk in raw_chunks:
3214
if not chunk_is_ref:
3215
chunks.append(chunk)
3220
raise errors.OptionExpansionLoop(string, _refs)
3222
value = self._expand_option(name, env, _refs)
3224
raise errors.ExpandingUnknownOption(name, string)
3225
chunks.append(value)
3227
chunk_is_ref = False
3228
result = ''.join(chunks)
3231
def _expand_option(self, name, env, _refs):
3232
if env is not None and name in env:
3233
# Special case, values provided in env takes precedence over
3237
# FIXME: This is a limited implementation, what we really need is a
3238
# way to query the bzr config for the value of an option,
3239
# respecting the scope rules (That is, once we implement fallback
3240
# configs, getting the option value should restart from the top
3241
# config, not the current one) -- vila 20101222
3242
value = self.get(name, expand=False)
3243
value = self._expand_options_in_string(value, env, _refs)
3246
def _get_mutable_section(self):
3247
"""Get the MutableSection for the Stack.
3249
This is where we guarantee that the mutable section is lazily loaded:
3250
this means we won't load the corresponding store before setting a value
3251
or deleting an option. In practice the store will often be loaded but
3252
this allows helps catching some programming errors.
3254
section = self.store.get_mutable_section(self.mutable_section_name)
3257
def set(self, name, value):
3258
"""Set a new value for the option."""
3259
section = self._get_mutable_section()
3260
section.set(name, value)
3261
for hook in ConfigHooks['set']:
3262
hook(self, name, value)
3264
def remove(self, name):
3265
"""Remove an existing option."""
3266
section = self._get_mutable_section()
3267
section.remove(name)
3268
for hook in ConfigHooks['remove']:
3272
# Mostly for debugging use
3273
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3275
def _get_overrides(self):
3276
# Hack around library_state.initialize never called
3277
if bzrlib.global_state is not None:
3278
return [bzrlib.global_state.cmdline_overrides]
3282
class _CompatibleStack(Stack):
3283
"""Place holder for compatibility with previous design.
3285
This is intended to ease the transition from the Config-based design to the
3286
Stack-based design and should not be used nor relied upon by plugins.
3288
One assumption made here is that the daughter classes will all use Stores
3289
derived from LockableIniFileStore).
3291
It implements set() by re-loading the store before applying the
3292
modification and saving it.
3294
The long term plan being to implement a single write by store to save
3295
all modifications, this class should not be used in the interim.
3298
def set(self, name, value):
3301
super(_CompatibleStack, self).set(name, value)
3302
# Force a write to persistent storage
3306
class GlobalStack(_CompatibleStack):
3307
"""Global options only stack."""
3311
gstore = GlobalStore()
3312
super(GlobalStack, self).__init__(
3313
[self._get_overrides, gstore.get_sections],
3317
class LocationStack(_CompatibleStack):
3318
"""Per-location options falling back to global options stack."""
3320
def __init__(self, location):
3321
"""Make a new stack for a location and global configuration.
3323
:param location: A URL prefix to """
3324
lstore = LocationStore()
3325
matcher = LocationMatcher(lstore, location)
3326
gstore = GlobalStore()
3327
super(LocationStack, self).__init__(
3328
[self._get_overrides,
3329
matcher.get_sections, gstore.get_sections],
3333
class BranchStack(_CompatibleStack):
3334
"""Per-location options falling back to branch then global options stack."""
3336
def __init__(self, branch):
3337
bstore = BranchStore(branch)
3338
lstore = LocationStore()
3339
matcher = LocationMatcher(lstore, branch.base)
3340
gstore = GlobalStore()
3341
super(BranchStack, self).__init__(
3342
[self._get_overrides,
3343
matcher.get_sections, bstore.get_sections, gstore.get_sections],
3345
self.branch = branch
3348
class RemoteControlStack(_CompatibleStack):
3349
"""Remote control-only options stack."""
3351
def __init__(self, bzrdir):
3352
cstore = ControlStore(bzrdir)
3353
super(RemoteControlStack, self).__init__(
3354
[cstore.get_sections],
3356
self.bzrdir = bzrdir
3359
class RemoteBranchStack(_CompatibleStack):
3360
"""Remote branch-only options stack."""
3362
def __init__(self, branch):
3363
bstore = BranchStore(branch)
3364
super(RemoteBranchStack, self).__init__(
3365
[bstore.get_sections],
3367
self.branch = branch
3370
class cmd_config(commands.Command):
3371
__doc__ = """Display, set or remove a configuration option.
3373
Display the active value for a given option.
3375
If --all is specified, NAME is interpreted as a regular expression and all
3376
matching options are displayed mentioning their scope. The active value
3377
that bzr will take into account is the first one displayed for each option.
3379
If no NAME is given, --all .* is implied.
3381
Setting a value is achieved by using name=value without spaces. The value
3382
is set in the most relevant scope and can be checked by displaying the
3386
takes_args = ['name?']
3390
# FIXME: This should be a registry option so that plugins can register
3391
# their own config files (or not) -- vila 20101002
3392
commands.Option('scope', help='Reduce the scope to the specified'
3393
' configuration file',
3395
commands.Option('all',
3396
help='Display all the defined values for the matching options.',
3398
commands.Option('remove', help='Remove the option from'
3399
' the configuration file'),
3402
_see_also = ['configuration']
3404
@commands.display_command
3405
def run(self, name=None, all=False, directory=None, scope=None,
3407
if directory is None:
3409
directory = urlutils.normalize_url(directory)
3411
raise errors.BzrError(
3412
'--all and --remove are mutually exclusive.')
3414
# Delete the option in the given scope
3415
self._remove_config_option(name, directory, scope)
3417
# Defaults to all options
3418
self._show_matching_options('.*', directory, scope)
3421
name, value = name.split('=', 1)
3423
# Display the option(s) value(s)
3425
self._show_matching_options(name, directory, scope)
3427
self._show_value(name, directory, scope)
3430
raise errors.BzrError(
3431
'Only one option can be set.')
3432
# Set the option value
3433
self._set_config_option(name, value, directory, scope)
3435
def _get_configs(self, directory, scope=None):
3436
"""Iterate the configurations specified by ``directory`` and ``scope``.
3438
:param directory: Where the configurations are derived from.
3440
:param scope: A specific config to start from.
3442
if scope is not None:
3443
if scope == 'bazaar':
3444
yield GlobalConfig()
3445
elif scope == 'locations':
3446
yield LocationConfig(directory)
3447
elif scope == 'branch':
3448
(_, br, _) = bzrdir.BzrDir.open_containing_tree_or_branch(
3450
yield br.get_config()
3453
(_, br, _) = bzrdir.BzrDir.open_containing_tree_or_branch(
3455
yield br.get_config()
3456
except errors.NotBranchError:
3457
yield LocationConfig(directory)
3458
yield GlobalConfig()
3460
def _show_value(self, name, directory, scope):
3462
for c in self._get_configs(directory, scope):
3465
for (oname, value, section, conf_id, parser) in c._get_options():
3467
# Display only the first value and exit
3469
# FIXME: We need to use get_user_option to take policies
3470
# into account and we need to make sure the option exists
3471
# too (hence the two for loops), this needs a better API
3473
value = c.get_user_option(name)
3474
# Quote the value appropriately
3475
value = parser._quote(value)
3476
self.outf.write('%s\n' % (value,))
3480
raise errors.NoSuchConfigOption(name)
3482
def _show_matching_options(self, name, directory, scope):
3483
name = lazy_regex.lazy_compile(name)
3484
# We want any error in the regexp to be raised *now* so we need to
3485
# avoid the delay introduced by the lazy regexp. But, we still do
3486
# want the nicer errors raised by lazy_regex.
3487
name._compile_and_collapse()
3490
for c in self._get_configs(directory, scope):
3491
for (oname, value, section, conf_id, parser) in c._get_options():
3492
if name.search(oname):
3493
if cur_conf_id != conf_id:
3494
# Explain where the options are defined
3495
self.outf.write('%s:\n' % (conf_id,))
3496
cur_conf_id = conf_id
3498
if (section not in (None, 'DEFAULT')
3499
and cur_section != section):
3500
# Display the section if it's not the default (or only)
3502
self.outf.write(' [%s]\n' % (section,))
3503
cur_section = section
3504
self.outf.write(' %s = %s\n' % (oname, value))
3506
def _set_config_option(self, name, value, directory, scope):
3507
for conf in self._get_configs(directory, scope):
3508
conf.set_user_option(name, value)
3511
raise errors.NoSuchConfig(scope)
3513
def _remove_config_option(self, name, directory, scope):
3515
raise errors.BzrCommandError(
3516
'--remove expects an option to remove.')
3518
for conf in self._get_configs(directory, scope):
3519
for (section_name, section, conf_id) in conf._get_sections():
3520
if scope is not None and conf_id != scope:
3521
# Not the right configuration file
3524
if conf_id != conf.config_id():
3525
conf = self._get_configs(directory, conf_id).next()
3526
# We use the first section in the first config where the
3527
# option is defined to remove it
3528
conf.remove_user_option(name, section_name)
3533
raise errors.NoSuchConfig(scope)
3535
raise errors.NoSuchConfigOption(name)
3539
# We need adapters that can build a Store or a Stack in a test context. Test
3540
# classes, based on TestCaseWithTransport, can use the registry to parametrize
3541
# themselves. The builder will receive a test instance and should return a
3542
# ready-to-use store or stack. Plugins that define new store/stacks can also
3543
# register themselves here to be tested against the tests defined in
3544
# bzrlib.tests.test_config. Note that the builder can be called multiple times
3545
# for the same tests.
3547
# The registered object should be a callable receiving a test instance
3548
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
3550
test_store_builder_registry = registry.Registry()
3552
# The registered object should be a callable receiving a test instance
3553
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
3555
test_stack_builder_registry = registry.Registry()