1508
2259
configobj[name] = value
1510
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)
1511
2274
self._set_configobj(configobj)
1513
2276
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2278
f = StringIO(self._transport.get_bytes(self._filename))
2279
for hook in OldConfigHooks['load']:
1516
2282
except errors.NoSuchFile:
1517
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)
1519
2293
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2294
f = self._get_config_file()
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())
1522
2306
def _set_configobj(self, configobj):
1523
2307
out_file = StringIO()
1524
2308
configobj.write(out_file)
1525
2309
out_file.seek(0)
1526
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('log_format', default='long',
2577
Log format to use when displaying revisions.
2579
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2580
may be provided by plugins.
2582
option_registry.register(
2583
Option('output_encoding',
2584
help= 'Unicode encoding for output'
2585
' (terminal encoding if not specified).'))
2586
option_registry.register(
2587
Option('push_strict', default=None,
2588
from_unicode=bool_from_store,
2590
The default value for ``push --strict``.
2592
If present, defines the ``--strict`` option default value for checking
2593
uncommitted changes before sending a merge directive.
2595
option_registry.register(
2596
Option('repository.fdatasync', default=True,
2597
from_unicode=bool_from_store,
2599
Flush repository changes onto physical disk?
2601
If true (default), repository changes are flushed through the OS buffers
2602
to physical disk. This is somewhat slower, but means data should not be
2603
lost if the machine crashes. See also dirstate.fdatasync.
2605
option_registry.register(
2606
Option('send_strict', default=None,
2607
from_unicode=bool_from_store,
2609
The default value for ``send --strict``.
2611
If present, defines the ``--strict`` option default value for checking
2612
uncommitted changes before pushing.
2615
option_registry.register(
2616
Option('serve.client_timeout',
2617
default=300.0, from_unicode=float_from_store,
2618
help="If we wait for a new request from a client for more than"
2619
" X seconds, consider the client idle, and hangup."))
2622
class Section(object):
2623
"""A section defines a dict of option name => value.
2625
This is merely a read-only dict which can add some knowledge about the
2626
options. It is *not* a python dict object though and doesn't try to mimic
2630
def __init__(self, section_id, options):
2631
self.id = section_id
2632
# We re-use the dict-like object received
2633
self.options = options
2635
def get(self, name, default=None, expand=True):
2636
return self.options.get(name, default)
2638
def iter_option_names(self):
2639
for k in self.options.iterkeys():
2643
# Mostly for debugging use
2644
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2647
_NewlyCreatedOption = object()
2648
"""Was the option created during the MutableSection lifetime"""
2651
class MutableSection(Section):
2652
"""A section allowing changes and keeping track of the original values."""
2654
def __init__(self, section_id, options):
2655
super(MutableSection, self).__init__(section_id, options)
2658
def set(self, name, value):
2659
if name not in self.options:
2660
# This is a new option
2661
self.orig[name] = _NewlyCreatedOption
2662
elif name not in self.orig:
2663
self.orig[name] = self.get(name, None)
2664
self.options[name] = value
2666
def remove(self, name):
2667
if name not in self.orig:
2668
self.orig[name] = self.get(name, None)
2669
del self.options[name]
2672
class Store(object):
2673
"""Abstract interface to persistent storage for configuration options."""
2675
readonly_section_class = Section
2676
mutable_section_class = MutableSection
2678
def is_loaded(self):
2679
"""Returns True if the Store has been loaded.
2681
This is used to implement lazy loading and ensure the persistent
2682
storage is queried only when needed.
2684
raise NotImplementedError(self.is_loaded)
2687
"""Loads the Store from persistent storage."""
2688
raise NotImplementedError(self.load)
2690
def _load_from_string(self, bytes):
2691
"""Create a store from a string in configobj syntax.
2693
:param bytes: A string representing the file content.
2695
raise NotImplementedError(self._load_from_string)
2698
"""Unloads the Store.
2700
This should make is_loaded() return False. This is used when the caller
2701
knows that the persistent storage has changed or may have change since
2704
raise NotImplementedError(self.unload)
2707
"""Saves the Store to persistent storage."""
2708
raise NotImplementedError(self.save)
2710
def external_url(self):
2711
raise NotImplementedError(self.external_url)
2713
def get_sections(self):
2714
"""Returns an ordered iterable of existing sections.
2716
:returns: An iterable of (store, section).
2718
raise NotImplementedError(self.get_sections)
2720
def get_mutable_section(self, section_id=None):
2721
"""Returns the specified mutable section.
2723
:param section_id: The section identifier
2725
raise NotImplementedError(self.get_mutable_section)
2728
# Mostly for debugging use
2729
return "<config.%s(%s)>" % (self.__class__.__name__,
2730
self.external_url())
2733
class CommandLineStore(Store):
2734
"A store to carry command line overrides for the config options."""
2736
def __init__(self, opts=None):
2737
super(CommandLineStore, self).__init__()
2743
# The dict should be cleared but not replaced so it can be shared.
2744
self.options.clear()
2746
def _from_cmdline(self, overrides):
2747
# Reset before accepting new definitions
2749
for over in overrides:
2751
name, value = over.split('=', 1)
2753
raise errors.BzrCommandError(
2754
gettext("Invalid '%s', should be of the form 'name=value'")
2756
self.options[name] = value
2758
def external_url(self):
2759
# Not an url but it makes debugging easier and it never needed
2763
def get_sections(self):
2764
yield self, self.readonly_section_class('cmdline_overrides',
2768
class IniFileStore(Store):
2769
"""A config Store using ConfigObj for storage.
2771
:ivar transport: The transport object where the config file is located.
2773
:ivar file_name: The config file basename in the transport directory.
2775
:ivar _config_obj: Private member to hold the ConfigObj instance used to
2776
serialize/deserialize the config file.
2780
"""A config Store using ConfigObj for storage.
2782
super(IniFileStore, self).__init__()
2783
self._config_obj = None
2785
def is_loaded(self):
2786
return self._config_obj != None
2789
self._config_obj = None
2791
def _load_content(self):
2792
"""Load the config file bytes.
2794
This should be provided by subclasses
2796
:return: Byte string
2798
raise NotImplementedError(self._load_content)
2800
def _save_content(self, content):
2801
"""Save the config file bytes.
2803
This should be provided by subclasses
2805
:param content: Config file bytes to write
2807
raise NotImplementedError(self._save_content)
2810
"""Load the store from the associated file."""
2811
if self.is_loaded():
2813
content = self._load_content()
2814
self._load_from_string(content)
2815
for hook in ConfigHooks['load']:
2818
def _load_from_string(self, bytes):
2819
"""Create a config store from a string.
2821
:param bytes: A string representing the file content.
2823
if self.is_loaded():
2824
raise AssertionError('Already loaded: %r' % (self._config_obj,))
2825
co_input = StringIO(bytes)
2827
# The config files are always stored utf8-encoded
2828
self._config_obj = ConfigObj(co_input, encoding='utf-8',
2830
except configobj.ConfigObjError, e:
2831
self._config_obj = None
2832
raise errors.ParseConfigError(e.errors, self.external_url())
2833
except UnicodeDecodeError:
2834
raise errors.ConfigContentError(self.external_url())
2837
if not self.is_loaded():
2841
self._config_obj.write(out)
2842
self._save_content(out.getvalue())
2843
for hook in ConfigHooks['save']:
2846
def get_sections(self):
2847
"""Get the configobj section in the file order.
2849
:returns: An iterable of (store, section).
2851
# We need a loaded store
2854
except (errors.NoSuchFile, errors.PermissionDenied):
2855
# If the file can't be read, there is no sections
2857
cobj = self._config_obj
2859
yield self, self.readonly_section_class(None, cobj)
2860
for section_name in cobj.sections:
2862
self.readonly_section_class(section_name,
2863
cobj[section_name]))
2865
def get_mutable_section(self, section_id=None):
2866
# We need a loaded store
2869
except errors.NoSuchFile:
2870
# The file doesn't exist, let's pretend it was empty
2871
self._load_from_string('')
2872
if section_id is None:
2873
section = self._config_obj
2875
section = self._config_obj.setdefault(section_id, {})
2876
return self.mutable_section_class(section_id, section)
2879
class TransportIniFileStore(IniFileStore):
2880
"""IniFileStore that loads files from a transport.
2883
def __init__(self, transport, file_name):
2884
"""A Store using a ini file on a Transport
2886
:param transport: The transport object where the config file is located.
2887
:param file_name: The config file basename in the transport directory.
2889
super(TransportIniFileStore, self).__init__()
2890
self.transport = transport
2891
self.file_name = file_name
2893
def _load_content(self):
2895
return self.transport.get_bytes(self.file_name)
2896
except errors.PermissionDenied:
2897
trace.warning("Permission denied while trying to load "
2898
"configuration store %s.", self.external_url())
2901
def _save_content(self, content):
2902
self.transport.put_bytes(self.file_name, content)
2904
def external_url(self):
2905
# FIXME: external_url should really accepts an optional relpath
2906
# parameter (bug #750169) :-/ -- vila 2011-04-04
2907
# The following will do in the interim but maybe we don't want to
2908
# expose a path here but rather a config ID and its associated
2909
# object </hand wawe>.
2910
return urlutils.join(self.transport.external_url(), self.file_name)
2913
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
2914
# unlockable stores for use with objects that can already ensure the locking
2915
# (think branches). If different stores (not based on ConfigObj) are created,
2916
# they may face the same issue.
2919
class LockableIniFileStore(TransportIniFileStore):
2920
"""A ConfigObjStore using locks on save to ensure store integrity."""
2922
def __init__(self, transport, file_name, lock_dir_name=None):
2923
"""A config Store using ConfigObj for storage.
2925
:param transport: The transport object where the config file is located.
2927
:param file_name: The config file basename in the transport directory.
2929
if lock_dir_name is None:
2930
lock_dir_name = 'lock'
2931
self.lock_dir_name = lock_dir_name
2932
super(LockableIniFileStore, self).__init__(transport, file_name)
2933
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
2935
def lock_write(self, token=None):
2936
"""Takes a write lock in the directory containing the config file.
2938
If the directory doesn't exist it is created.
2940
# FIXME: This doesn't check the ownership of the created directories as
2941
# ensure_config_dir_exists does. It should if the transport is local
2942
# -- vila 2011-04-06
2943
self.transport.create_prefix()
2944
return self._lock.lock_write(token)
2949
def break_lock(self):
2950
self._lock.break_lock()
2954
# We need to be able to override the undecorated implementation
2955
self.save_without_locking()
2957
def save_without_locking(self):
2958
super(LockableIniFileStore, self).save()
2961
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
2962
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
2963
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
2965
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
2966
# functions or a registry will make it easier and clearer for tests, focusing
2967
# on the relevant parts of the API that needs testing -- vila 20110503 (based
2968
# on a poolie's remark)
2969
class GlobalStore(LockableIniFileStore):
2971
def __init__(self, possible_transports=None):
2972
t = transport.get_transport_from_path(
2973
config_dir(), possible_transports=possible_transports)
2974
super(GlobalStore, self).__init__(t, 'bazaar.conf')
2978
class LocationStore(LockableIniFileStore):
2980
def __init__(self, possible_transports=None):
2981
t = transport.get_transport_from_path(
2982
config_dir(), possible_transports=possible_transports)
2983
super(LocationStore, self).__init__(t, 'locations.conf')
2984
self.id = 'locations'
2987
class BranchStore(TransportIniFileStore):
2989
def __init__(self, branch):
2990
super(BranchStore, self).__init__(branch.control_transport,
2992
self.branch = branch
2995
def lock_write(self, token=None):
2996
return self.branch.lock_write(token)
2999
return self.branch.unlock()
3003
# We need to be able to override the undecorated implementation
3004
self.save_without_locking()
3006
def save_without_locking(self):
3007
super(BranchStore, self).save()
3010
class ControlStore(LockableIniFileStore):
3012
def __init__(self, bzrdir):
3013
super(ControlStore, self).__init__(bzrdir.transport,
3015
lock_dir_name='branch_lock')
3018
class SectionMatcher(object):
3019
"""Select sections into a given Store.
3021
This is intended to be used to postpone getting an iterable of sections
3025
def __init__(self, store):
3028
def get_sections(self):
3029
# This is where we require loading the store so we can see all defined
3031
sections = self.store.get_sections()
3032
# Walk the revisions in the order provided
3033
for store, s in sections:
3037
def match(self, section):
3038
"""Does the proposed section match.
3040
:param section: A Section object.
3042
:returns: True if the section matches, False otherwise.
3044
raise NotImplementedError(self.match)
3047
class NameMatcher(SectionMatcher):
3049
def __init__(self, store, section_id):
3050
super(NameMatcher, self).__init__(store)
3051
self.section_id = section_id
3053
def match(self, section):
3054
return section.id == self.section_id
3057
class LocationSection(Section):
3059
def __init__(self, section, length, extra_path):
3060
super(LocationSection, self).__init__(section.id, section.options)
3061
self.length = length
3062
self.extra_path = extra_path
3063
self.locals = {'relpath': extra_path,
3064
'basename': urlutils.basename(extra_path)}
3066
def get(self, name, default=None, expand=True):
3067
value = super(LocationSection, self).get(name, default)
3068
if value is not None and expand:
3069
policy_name = self.get(name + ':policy', None)
3070
policy = _policy_value.get(policy_name, POLICY_NONE)
3071
if policy == POLICY_APPENDPATH:
3072
value = urlutils.join(value, self.extra_path)
3073
# expand section local options right now (since POLICY_APPENDPATH
3074
# will never add options references, it's ok to expand after it).
3076
for is_ref, chunk in iter_option_refs(value):
3078
chunks.append(chunk)
3081
if ref in self.locals:
3082
chunks.append(self.locals[ref])
3084
chunks.append(chunk)
3085
value = ''.join(chunks)
3089
class LocationMatcher(SectionMatcher):
3091
def __init__(self, store, location):
3092
super(LocationMatcher, self).__init__(store)
3093
if location.startswith('file://'):
3094
location = urlutils.local_path_from_url(location)
3095
self.location = location
3097
def _get_matching_sections(self):
3098
"""Get all sections matching ``location``."""
3099
# We slightly diverge from LocalConfig here by allowing the no-name
3100
# section as the most generic one and the lower priority.
3101
no_name_section = None
3103
# Filter out the no_name_section so _iter_for_location_by_parts can be
3104
# used (it assumes all sections have a name).
3105
for _, section in self.store.get_sections():
3106
if section.id is None:
3107
no_name_section = section
3109
all_sections.append(section)
3110
# Unfortunately _iter_for_location_by_parts deals with section names so
3111
# we have to resync.
3112
filtered_sections = _iter_for_location_by_parts(
3113
[s.id for s in all_sections], self.location)
3114
iter_all_sections = iter(all_sections)
3115
matching_sections = []
3116
if no_name_section is not None:
3117
matching_sections.append(
3118
LocationSection(no_name_section, 0, self.location))
3119
for section_id, extra_path, length in filtered_sections:
3120
# a section id is unique for a given store so it's safe to take the
3121
# first matching section while iterating. Also, all filtered
3122
# sections are part of 'all_sections' and will always be found
3125
section = iter_all_sections.next()
3126
if section_id == section.id:
3127
matching_sections.append(
3128
LocationSection(section, length, extra_path))
3130
return matching_sections
3132
def get_sections(self):
3133
# Override the default implementation as we want to change the order
3134
matching_sections = self._get_matching_sections()
3135
# We want the longest (aka more specific) locations first
3136
sections = sorted(matching_sections,
3137
key=lambda section: (section.length, section.id),
3139
# Sections mentioning 'ignore_parents' restrict the selection
3140
for section in sections:
3141
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3142
ignore = section.get('ignore_parents', None)
3143
if ignore is not None:
3144
ignore = ui.bool_from_string(ignore)
3147
# Finally, we have a valid section
3148
yield self.store, section
3151
_option_ref_re = lazy_regex.lazy_compile('({[^{}]+})')
3152
"""Describes an expandable option reference.
3154
We want to match the most embedded reference first.
3156
I.e. for '{{foo}}' we will get '{foo}',
3157
for '{bar{baz}}' we will get '{baz}'
3160
def iter_option_refs(string):
3161
# Split isolate refs so every other chunk is a ref
3163
for chunk in _option_ref_re.split(string):
3168
class Stack(object):
3169
"""A stack of configurations where an option can be defined"""
3171
def __init__(self, sections_def, store=None, mutable_section_id=None):
3172
"""Creates a stack of sections with an optional store for changes.
3174
:param sections_def: A list of Section or callables that returns an
3175
iterable of Section. This defines the Sections for the Stack and
3176
can be called repeatedly if needed.
3178
:param store: The optional Store where modifications will be
3179
recorded. If none is specified, no modifications can be done.
3181
:param mutable_section_id: The id of the MutableSection where changes
3182
are recorded. This requires the ``store`` parameter to be
3185
self.sections_def = sections_def
3187
self.mutable_section_id = mutable_section_id
3189
def get(self, name, expand=None):
3190
"""Return the *first* option value found in the sections.
3192
This is where we guarantee that sections coming from Store are loaded
3193
lazily: the loading is delayed until we need to either check that an
3194
option exists or get its value, which in turn may require to discover
3195
in which sections it can be defined. Both of these (section and option
3196
existence) require loading the store (even partially).
3198
:param name: The queried option.
3200
:param expand: Whether options references should be expanded.
3202
:returns: The value of the option.
3204
# FIXME: No caching of options nor sections yet -- vila 20110503
3206
expand = _get_expand_default_value()
3208
# Ensuring lazy loading is achieved by delaying section matching (which
3209
# implies querying the persistent storage) until it can't be avoided
3210
# anymore by using callables to describe (possibly empty) section
3212
for sections in self.sections_def:
3213
for store, section in sections():
3214
value = section.get(name)
3215
if value is not None:
3217
if value is not None:
3219
# If the option is registered, it may provide additional info about
3222
opt = option_registry.get(name)
3226
def expand_and_convert(val):
3227
# This may need to be called twice if the value is None or ends up
3228
# being None during expansion or conversion.
3231
if isinstance(val, basestring):
3232
val = self._expand_options_in_string(val)
3234
trace.warning('Cannot expand "%s":'
3235
' %s does not support option expansion'
3236
% (name, type(val)))
3238
val = opt.convert_from_unicode(val)
3240
value = expand_and_convert(value)
3241
if opt is not None and value is None:
3242
# If the option is registered, it may provide a default value
3243
value = opt.get_default()
3244
value = expand_and_convert(value)
3245
for hook in ConfigHooks['get']:
3246
hook(self, name, value)
3249
def expand_options(self, string, env=None):
3250
"""Expand option references in the string in the configuration context.
3252
:param string: The string containing option(s) to expand.
3254
:param env: An option dict defining additional configuration options or
3255
overriding existing ones.
3257
:returns: The expanded string.
3259
return self._expand_options_in_string(string, env)
3261
def _expand_options_in_string(self, string, env=None, _refs=None):
3262
"""Expand options in the string in the configuration context.
3264
:param string: The string to be expanded.
3266
:param env: An option dict defining additional configuration options or
3267
overriding existing ones.
3269
:param _refs: Private list (FIFO) containing the options being expanded
3272
:returns: The expanded string.
3275
# Not much to expand there
3278
# What references are currently resolved (to detect loops)
3281
# We need to iterate until no more refs appear ({{foo}} will need two
3282
# iterations for example).
3287
for is_ref, chunk in iter_option_refs(result):
3289
chunks.append(chunk)
3294
raise errors.OptionExpansionLoop(string, _refs)
3296
value = self._expand_option(name, env, _refs)
3298
raise errors.ExpandingUnknownOption(name, string)
3299
chunks.append(value)
3301
result = ''.join(chunks)
3304
def _expand_option(self, name, env, _refs):
3305
if env is not None and name in env:
3306
# Special case, values provided in env takes precedence over
3310
value = self.get(name, expand=False)
3311
value = self._expand_options_in_string(value, env, _refs)
3314
def _get_mutable_section(self):
3315
"""Get the MutableSection for the Stack.
3317
This is where we guarantee that the mutable section is lazily loaded:
3318
this means we won't load the corresponding store before setting a value
3319
or deleting an option. In practice the store will often be loaded but
3320
this helps catching some programming errors.
3322
section = self.store.get_mutable_section(self.mutable_section_id)
3325
def set(self, name, value):
3326
"""Set a new value for the option."""
3327
section = self._get_mutable_section()
3328
section.set(name, value)
3329
for hook in ConfigHooks['set']:
3330
hook(self, name, value)
3332
def remove(self, name):
3333
"""Remove an existing option."""
3334
section = self._get_mutable_section()
3335
section.remove(name)
3336
for hook in ConfigHooks['remove']:
3340
# Mostly for debugging use
3341
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3343
def _get_overrides(self):
3344
# Hack around library_state.initialize never called
3345
if bzrlib.global_state is not None:
3346
return bzrlib.global_state.cmdline_overrides.get_sections()
3350
class _CompatibleStack(Stack):
3351
"""Place holder for compatibility with previous design.
3353
This is intended to ease the transition from the Config-based design to the
3354
Stack-based design and should not be used nor relied upon by plugins.
3356
One assumption made here is that the daughter classes will all use Stores
3357
derived from LockableIniFileStore).
3359
It implements set() and remove () by re-loading the store before applying
3360
the modification and saving it.
3362
The long term plan being to implement a single write by store to save
3363
all modifications, this class should not be used in the interim.
3366
def set(self, name, value):
3369
super(_CompatibleStack, self).set(name, value)
3370
# Force a write to persistent storage
3373
def remove(self, name):
3376
super(_CompatibleStack, self).remove(name)
3377
# Force a write to persistent storage
3381
class GlobalStack(_CompatibleStack):
3382
"""Global options only stack."""
3386
gstore = GlobalStore()
3387
super(GlobalStack, self).__init__(
3388
[self._get_overrides, NameMatcher(gstore, 'DEFAULT').get_sections],
3389
gstore, mutable_section_id='DEFAULT')
3392
class LocationStack(_CompatibleStack):
3393
"""Per-location options falling back to global options stack."""
3395
def __init__(self, location):
3396
"""Make a new stack for a location and global configuration.
3398
:param location: A URL prefix to """
3399
lstore = LocationStore()
3400
if location.startswith('file://'):
3401
location = urlutils.local_path_from_url(location)
3402
matcher = LocationMatcher(lstore, location)
3403
gstore = GlobalStore()
3404
super(LocationStack, self).__init__(
3405
[self._get_overrides,
3406
matcher.get_sections, NameMatcher(gstore, 'DEFAULT').get_sections],
3407
lstore, mutable_section_id=location)
3410
class BranchStack(_CompatibleStack):
3411
"""Per-location options falling back to branch then global options stack."""
3413
def __init__(self, branch):
3414
bstore = branch._get_config_store()
3415
lstore = LocationStore()
3416
matcher = LocationMatcher(lstore, branch.base)
3417
gstore = GlobalStore()
3418
super(BranchStack, self).__init__(
3419
[self._get_overrides,
3420
matcher.get_sections, bstore.get_sections,
3421
NameMatcher(gstore, 'DEFAULT').get_sections],
3423
self.branch = branch
3426
class RemoteControlStack(_CompatibleStack):
3427
"""Remote control-only options stack."""
3429
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
3430
# with the stack used for remote bzr dirs. RemoteControlStack only uses
3431
# control.conf and is used only for stack options.
3433
def __init__(self, bzrdir):
3434
cstore = bzrdir._get_config_store()
3435
super(RemoteControlStack, self).__init__(
3436
[cstore.get_sections],
3438
self.bzrdir = bzrdir
3441
class RemoteBranchStack(_CompatibleStack):
3442
"""Remote branch-only options stack."""
3444
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
3445
# with the stack used for remote branches. RemoteBranchStack only uses
3446
# branch.conf and is used only for the stack options.
3448
def __init__(self, branch):
3449
bstore = branch._get_config_store()
3450
super(RemoteBranchStack, self).__init__(
3451
[bstore.get_sections],
3453
self.branch = branch
3455
# Use a an empty dict to initialize an empty configobj avoiding all
3456
# parsing and encoding checks
3457
_quoting_config = configobj.ConfigObj(
3458
{}, encoding='utf-8', interpolation=False)
3460
class cmd_config(commands.Command):
3461
__doc__ = """Display, set or remove a configuration option.
3463
Display the active value for a given option.
3465
If --all is specified, NAME is interpreted as a regular expression and all
3466
matching options are displayed mentioning their scope. The active value
3467
that bzr will take into account is the first one displayed for each option.
3469
If no NAME is given, --all .* is implied.
3471
Setting a value is achieved by using name=value without spaces. The value
3472
is set in the most relevant scope and can be checked by displaying the
3476
takes_args = ['name?']
3480
# FIXME: This should be a registry option so that plugins can register
3481
# their own config files (or not) and will also address
3482
# http://pad.lv/788991 -- vila 20101115
3483
commands.Option('scope', help='Reduce the scope to the specified'
3484
' configuration file',
3486
commands.Option('all',
3487
help='Display all the defined values for the matching options.',
3489
commands.Option('remove', help='Remove the option from'
3490
' the configuration file'),
3493
_see_also = ['configuration']
3495
@commands.display_command
3496
def run(self, name=None, all=False, directory=None, scope=None,
3498
if directory is None:
3500
directory = urlutils.normalize_url(directory)
3502
raise errors.BzrError(
3503
'--all and --remove are mutually exclusive.')
3505
# Delete the option in the given scope
3506
self._remove_config_option(name, directory, scope)
3508
# Defaults to all options
3509
self._show_matching_options('.*', directory, scope)
3512
name, value = name.split('=', 1)
3514
# Display the option(s) value(s)
3516
self._show_matching_options(name, directory, scope)
3518
self._show_value(name, directory, scope)
3521
raise errors.BzrError(
3522
'Only one option can be set.')
3523
# Set the option value
3524
self._set_config_option(name, value, directory, scope)
3526
def _get_stack(self, directory, scope=None):
3527
"""Get the configuration stack specified by ``directory`` and ``scope``.
3529
:param directory: Where the configurations are derived from.
3531
:param scope: A specific config to start from.
3533
# FIXME: scope should allow access to plugin-specific stacks (even
3534
# reduced to the plugin-specific store), related to
3535
# http://pad.lv/788991 -- vila 2011-11-15
3536
if scope is not None:
3537
if scope == 'bazaar':
3538
return GlobalStack()
3539
elif scope == 'locations':
3540
return LocationStack(directory)
3541
elif scope == 'branch':
3543
controldir.ControlDir.open_containing_tree_or_branch(
3545
return br.get_config_stack()
3546
raise errors.NoSuchConfig(scope)
3550
controldir.ControlDir.open_containing_tree_or_branch(
3552
return br.get_config_stack()
3553
except errors.NotBranchError:
3554
return LocationStack(directory)
3556
def _show_value(self, name, directory, scope):
3557
conf = self._get_stack(directory, scope)
3558
value = conf.get(name, expand=True)
3559
if value is not None:
3560
# Quote the value appropriately
3561
value = _quoting_config._quote(value)
3562
self.outf.write('%s\n' % (value,))
3564
raise errors.NoSuchConfigOption(name)
3566
def _show_matching_options(self, name, directory, scope):
3567
name = lazy_regex.lazy_compile(name)
3568
# We want any error in the regexp to be raised *now* so we need to
3569
# avoid the delay introduced by the lazy regexp. But, we still do
3570
# want the nicer errors raised by lazy_regex.
3571
name._compile_and_collapse()
3574
conf = self._get_stack(directory, scope)
3575
for sections in conf.sections_def:
3576
for store, section in sections():
3577
for oname in section.iter_option_names():
3578
if name.search(oname):
3579
if cur_store_id != store.id:
3580
# Explain where the options are defined
3581
self.outf.write('%s:\n' % (store.id,))
3582
cur_store_id = store.id
3584
if (section.id not in (None, 'DEFAULT')
3585
and cur_section != section.id):
3586
# Display the section if it's not the default (or
3588
self.outf.write(' [%s]\n' % (section.id,))
3589
cur_section = section.id
3590
value = section.get(oname, expand=False)
3591
value = _quoting_config._quote(value)
3592
self.outf.write(' %s = %s\n' % (oname, value))
3594
def _set_config_option(self, name, value, directory, scope):
3595
conf = self._get_stack(directory, scope)
3596
conf.set(name, value)
3598
def _remove_config_option(self, name, directory, scope):
3600
raise errors.BzrCommandError(
3601
'--remove expects an option to remove.')
3602
conf = self._get_stack(directory, scope)
3606
raise errors.NoSuchConfigOption(name)
3611
# We need adapters that can build a Store or a Stack in a test context. Test
3612
# classes, based on TestCaseWithTransport, can use the registry to parametrize
3613
# themselves. The builder will receive a test instance and should return a
3614
# ready-to-use store or stack. Plugins that define new store/stacks can also
3615
# register themselves here to be tested against the tests defined in
3616
# bzrlib.tests.test_config. Note that the builder can be called multiple times
3617
# for the same tests.
3619
# The registered object should be a callable receiving a test instance
3620
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
3622
test_store_builder_registry = registry.Registry()
3624
# The registered object should be a callable receiving a test instance
3625
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
3627
test_stack_builder_registry = registry.Registry()