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, a callable returning a unicode string so that
2335
``from_unicode`` can be used on the return value, or a python
2336
object that can be stringified (so only the empty list is supported
2339
:param default_from_env: A list of environment variables which can
2340
provide a default value. 'default' will be used only if none of the
2341
variables specified here are set in the environment.
2343
:param help: a doc string to explain the option to the user.
2345
:param from_unicode: a callable to convert the unicode string
2346
representing the option value in a store. This is not called for
2349
:param invalid: the action to be taken when an invalid value is
2350
encountered in a store. This is called only when from_unicode is
2351
invoked to convert a string and returns None or raise ValueError or
2352
TypeError. Accepted values are: None (ignore invalid values),
2353
'warning' (emit a warning), 'error' (emit an error message and
2356
if default_from_env is None:
2357
default_from_env = []
2359
# Convert the default value to a unicode string so all values are
2360
# strings internally before conversion (via from_unicode) is attempted.
2363
elif isinstance(default, list):
2364
# Only the empty list is supported
2366
raise AssertionError(
2367
'Only empty lists are supported as default values')
2369
elif isinstance(default, (str, unicode, bool, int, float)):
2370
# Rely on python to convert strings, booleans and integers
2371
self.default = u'%s' % (default,)
2372
elif callable(default):
2373
self.default = default
2375
# other python objects are not expected
2376
raise AssertionError('%r is not supported as a default value'
2378
self.default_from_env = default_from_env
2380
self.from_unicode = from_unicode
2381
if invalid and invalid not in ('warning', 'error'):
2382
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2383
self.invalid = invalid
2385
def convert_from_unicode(self, unicode_value):
2386
if self.from_unicode is None or unicode_value is None:
2387
# Don't convert or nothing to convert
2388
return unicode_value
2390
converted = self.from_unicode(unicode_value)
2391
except (ValueError, TypeError):
2392
# Invalid values are ignored
2394
if converted is None and self.invalid is not None:
2395
# The conversion failed
2396
if self.invalid == 'warning':
2397
trace.warning('Value "%s" is not valid for "%s"',
2398
unicode_value, self.name)
2399
elif self.invalid == 'error':
2400
raise errors.ConfigOptionValueError(self.name, unicode_value)
2403
def get_default(self):
2405
for var in self.default_from_env:
2407
# If the env variable is defined, its value is the default one
2408
value = os.environ[var]
2413
# Otherwise, fallback to the value defined at registration
2414
if callable(self.default):
2415
value = self.default()
2416
if not isinstance(value, unicode):
2417
raise AssertionError(
2418
'Callable default values should be unicode')
2420
value = self.default
2423
def get_help_text(self, additional_see_also=None, plain=True):
2425
from bzrlib import help_topics
2426
result += help_topics._format_see_also(additional_see_also)
2428
result = help_topics.help_as_plain_text(result)
2432
# Predefined converters to get proper values from store
2434
def bool_from_store(unicode_str):
2435
return ui.bool_from_string(unicode_str)
2438
def int_from_store(unicode_str):
2439
return int(unicode_str)
2442
def float_from_store(unicode_str):
2443
return float(unicode_str)
2447
# Use a an empty dict to initialize an empty configobj avoiding all
2448
# parsing and encoding checks
2449
_list_converter_config = configobj.ConfigObj(
2450
{}, encoding='utf-8', list_values=True, interpolation=False)
2453
def list_from_store(unicode_str):
2454
if not isinstance(unicode_str, basestring):
2456
# Now inject our string directly as unicode. All callers got their value
2457
# from configobj, so values that need to be quoted are already properly
2459
_list_converter_config.reset()
2460
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2461
maybe_list = _list_converter_config['list']
2462
# ConfigObj return '' instead of u''. Use 'str' below to catch all cases.
2463
if isinstance(maybe_list, basestring):
2465
# A single value, most probably the user forgot (or didn't care to
2466
# add) the final ','
2469
# The empty string, convert to empty list
2472
# We rely on ConfigObj providing us with a list already
2477
class OptionRegistry(registry.Registry):
2478
"""Register config options by their name.
2480
This overrides ``registry.Registry`` to simplify registration by acquiring
2481
some information from the option object itself.
2484
def register(self, option):
2485
"""Register a new option to its name.
2487
:param option: The option to register. Its name is used as the key.
2489
super(OptionRegistry, self).register(option.name, option,
2492
def register_lazy(self, key, module_name, member_name):
2493
"""Register a new option to be loaded on request.
2495
:param key: the key to request the option later. Since the registration
2496
is lazy, it should be provided and match the option name.
2498
:param module_name: the python path to the module. Such as 'os.path'.
2500
:param member_name: the member of the module to return. If empty or
2501
None, get() will return the module itself.
2503
super(OptionRegistry, self).register_lazy(key,
2504
module_name, member_name)
2506
def get_help(self, key=None):
2507
"""Get the help text associated with the given key"""
2508
option = self.get(key)
2509
the_help = option.help
2510
if callable(the_help):
2511
return the_help(self, key)
2515
option_registry = OptionRegistry()
2518
# Registered options in lexicographical order
2520
option_registry.register(
2521
Option('bzr.workingtree.worth_saving_limit', default=10,
2522
from_unicode=int_from_store, invalid='warning',
2524
How many changes before saving the dirstate.
2526
-1 means that we will never rewrite the dirstate file for only
2527
stat-cache changes. Regardless of this setting, we will always rewrite
2528
the dirstate file if a file is added/removed/renamed/etc. This flag only
2529
affects the behavior of updating the dirstate file after we notice that
2530
a file has been touched.
2532
option_registry.register(
2533
Option('dirstate.fdatasync', default=True,
2534
from_unicode=bool_from_store,
2536
Flush dirstate changes onto physical disk?
2538
If true (default), working tree metadata changes are flushed through the
2539
OS buffers to physical disk. This is somewhat slower, but means data
2540
should not be lost if the machine crashes. See also repository.fdatasync.
2542
option_registry.register(
2543
Option('debug_flags', default=[], from_unicode=list_from_store,
2544
help='Debug flags to activate.'))
2545
option_registry.register(
2546
Option('default_format', default='2a',
2547
help='Format used when creating branches.'))
2548
option_registry.register(
2549
Option('dpush_strict', default=None,
2550
from_unicode=bool_from_store,
2552
The default value for ``dpush --strict``.
2554
If present, defines the ``--strict`` option default value for checking
2555
uncommitted changes before pushing into a different VCS without any
2556
custom bzr metadata.
2558
option_registry.register(
2560
help='The command called to launch an editor to enter a message.'))
2561
option_registry.register(
2562
Option('ignore_missing_extensions', default=False,
2563
from_unicode=bool_from_store,
2565
Control the missing extensions warning display.
2567
The warning will not be emitted if set to True.
2569
option_registry.register(
2571
help='Language to translate messages into.'))
2572
option_registry.register(
2573
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2575
Steal locks that appears to be dead.
2577
If set to True, bzr will check if a lock is supposed to be held by an
2578
active process from the same user on the same machine. If the user and
2579
machine match, but no process with the given PID is active, then bzr
2580
will automatically break the stale lock, and create a new lock for
2582
Otherwise, bzr will prompt as normal to break the lock.
2584
option_registry.register(
2585
Option('log_format', default='long',
2587
Log format to use when displaying revisions.
2589
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2590
may be provided by plugins.
2592
option_registry.register(
2593
Option('output_encoding',
2594
help= 'Unicode encoding for output'
2595
' (terminal encoding if not specified).'))
2596
option_registry.register(
2597
Option('push_strict', default=None,
2598
from_unicode=bool_from_store,
2600
The default value for ``push --strict``.
2602
If present, defines the ``--strict`` option default value for checking
2603
uncommitted changes before sending a merge directive.
2605
option_registry.register(
2606
Option('repository.fdatasync', default=True,
2607
from_unicode=bool_from_store,
2609
Flush repository changes onto physical disk?
2611
If true (default), repository changes are flushed through the OS buffers
2612
to physical disk. This is somewhat slower, but means data should not be
2613
lost if the machine crashes. See also dirstate.fdatasync.
2616
option_registry.register(
2617
Option('selftest.timeout',
2619
from_unicode=int_from_store,
2620
help='Abort selftest if one test takes longer than this many seconds',
2623
option_registry.register(
2624
Option('send_strict', default=None,
2625
from_unicode=bool_from_store,
2627
The default value for ``send --strict``.
2629
If present, defines the ``--strict`` option default value for checking
2630
uncommitted changes before pushing.
2633
option_registry.register(
2634
Option('serve.client_timeout',
2635
default=300.0, from_unicode=float_from_store,
2636
help="If we wait for a new request from a client for more than"
2637
" X seconds, consider the client idle, and hangup."))
2640
class Section(object):
2641
"""A section defines a dict of option name => value.
2643
This is merely a read-only dict which can add some knowledge about the
2644
options. It is *not* a python dict object though and doesn't try to mimic
2648
def __init__(self, section_id, options):
2649
self.id = section_id
2650
# We re-use the dict-like object received
2651
self.options = options
2653
def get(self, name, default=None, expand=True):
2654
return self.options.get(name, default)
2656
def iter_option_names(self):
2657
for k in self.options.iterkeys():
2661
# Mostly for debugging use
2662
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2665
_NewlyCreatedOption = object()
2666
"""Was the option created during the MutableSection lifetime"""
2669
class MutableSection(Section):
2670
"""A section allowing changes and keeping track of the original values."""
2672
def __init__(self, section_id, options):
2673
super(MutableSection, self).__init__(section_id, options)
2676
def set(self, name, value):
2677
if name not in self.options:
2678
# This is a new option
2679
self.orig[name] = _NewlyCreatedOption
2680
elif name not in self.orig:
2681
self.orig[name] = self.get(name, None)
2682
self.options[name] = value
2684
def remove(self, name):
2685
if name not in self.orig:
2686
self.orig[name] = self.get(name, None)
2687
del self.options[name]
2690
class Store(object):
2691
"""Abstract interface to persistent storage for configuration options."""
2693
readonly_section_class = Section
2694
mutable_section_class = MutableSection
2696
def is_loaded(self):
2697
"""Returns True if the Store has been loaded.
2699
This is used to implement lazy loading and ensure the persistent
2700
storage is queried only when needed.
2702
raise NotImplementedError(self.is_loaded)
2705
"""Loads the Store from persistent storage."""
2706
raise NotImplementedError(self.load)
2708
def _load_from_string(self, bytes):
2709
"""Create a store from a string in configobj syntax.
2711
:param bytes: A string representing the file content.
2713
raise NotImplementedError(self._load_from_string)
2716
"""Unloads the Store.
2718
This should make is_loaded() return False. This is used when the caller
2719
knows that the persistent storage has changed or may have change since
2722
raise NotImplementedError(self.unload)
2725
"""Saves the Store to persistent storage."""
2726
raise NotImplementedError(self.save)
2728
def external_url(self):
2729
raise NotImplementedError(self.external_url)
2731
def get_sections(self):
2732
"""Returns an ordered iterable of existing sections.
2734
:returns: An iterable of (store, section).
2736
raise NotImplementedError(self.get_sections)
2738
def get_mutable_section(self, section_id=None):
2739
"""Returns the specified mutable section.
2741
:param section_id: The section identifier
2743
raise NotImplementedError(self.get_mutable_section)
2746
# Mostly for debugging use
2747
return "<config.%s(%s)>" % (self.__class__.__name__,
2748
self.external_url())
2751
class CommandLineStore(Store):
2752
"A store to carry command line overrides for the config options."""
2754
def __init__(self, opts=None):
2755
super(CommandLineStore, self).__init__()
2761
# The dict should be cleared but not replaced so it can be shared.
2762
self.options.clear()
2764
def _from_cmdline(self, overrides):
2765
# Reset before accepting new definitions
2767
for over in overrides:
2769
name, value = over.split('=', 1)
2771
raise errors.BzrCommandError(
2772
gettext("Invalid '%s', should be of the form 'name=value'")
2774
self.options[name] = value
2776
def external_url(self):
2777
# Not an url but it makes debugging easier and is never needed
2781
def get_sections(self):
2782
yield self, self.readonly_section_class('cmdline_overrides',
2786
class IniFileStore(Store):
2787
"""A config Store using ConfigObj for storage.
2789
:ivar transport: The transport object where the config file is located.
2791
:ivar file_name: The config file basename in the transport directory.
2793
:ivar _config_obj: Private member to hold the ConfigObj instance used to
2794
serialize/deserialize the config file.
2798
"""A config Store using ConfigObj for storage.
2800
super(IniFileStore, self).__init__()
2801
self._config_obj = None
2803
def is_loaded(self):
2804
return self._config_obj != None
2807
self._config_obj = None
2809
def _load_content(self):
2810
"""Load the config file bytes.
2812
This should be provided by subclasses
2814
:return: Byte string
2816
raise NotImplementedError(self._load_content)
2818
def _save_content(self, content):
2819
"""Save the config file bytes.
2821
This should be provided by subclasses
2823
:param content: Config file bytes to write
2825
raise NotImplementedError(self._save_content)
2828
"""Load the store from the associated file."""
2829
if self.is_loaded():
2831
content = self._load_content()
2832
self._load_from_string(content)
2833
for hook in ConfigHooks['load']:
2836
def _load_from_string(self, bytes):
2837
"""Create a config store from a string.
2839
:param bytes: A string representing the file content.
2841
if self.is_loaded():
2842
raise AssertionError('Already loaded: %r' % (self._config_obj,))
2843
co_input = StringIO(bytes)
2845
# The config files are always stored utf8-encoded
2846
self._config_obj = ConfigObj(co_input, encoding='utf-8',
2848
except configobj.ConfigObjError, e:
2849
self._config_obj = None
2850
raise errors.ParseConfigError(e.errors, self.external_url())
2851
except UnicodeDecodeError:
2852
raise errors.ConfigContentError(self.external_url())
2855
if not self.is_loaded():
2859
self._config_obj.write(out)
2860
self._save_content(out.getvalue())
2861
for hook in ConfigHooks['save']:
2864
def get_sections(self):
2865
"""Get the configobj section in the file order.
2867
:returns: An iterable of (store, section).
2869
# We need a loaded store
2872
except (errors.NoSuchFile, errors.PermissionDenied):
2873
# If the file can't be read, there is no sections
2875
cobj = self._config_obj
2877
yield self, self.readonly_section_class(None, cobj)
2878
for section_name in cobj.sections:
2880
self.readonly_section_class(section_name,
2881
cobj[section_name]))
2883
def get_mutable_section(self, section_id=None):
2884
# We need a loaded store
2887
except errors.NoSuchFile:
2888
# The file doesn't exist, let's pretend it was empty
2889
self._load_from_string('')
2890
if section_id is None:
2891
section = self._config_obj
2893
section = self._config_obj.setdefault(section_id, {})
2894
return self.mutable_section_class(section_id, section)
2897
class TransportIniFileStore(IniFileStore):
2898
"""IniFileStore that loads files from a transport.
2901
def __init__(self, transport, file_name):
2902
"""A Store using a ini file on a Transport
2904
:param transport: The transport object where the config file is located.
2905
:param file_name: The config file basename in the transport directory.
2907
super(TransportIniFileStore, self).__init__()
2908
self.transport = transport
2909
self.file_name = file_name
2911
def _load_content(self):
2913
return self.transport.get_bytes(self.file_name)
2914
except errors.PermissionDenied:
2915
trace.warning("Permission denied while trying to load "
2916
"configuration store %s.", self.external_url())
2919
def _save_content(self, content):
2920
self.transport.put_bytes(self.file_name, content)
2922
def external_url(self):
2923
# FIXME: external_url should really accepts an optional relpath
2924
# parameter (bug #750169) :-/ -- vila 2011-04-04
2925
# The following will do in the interim but maybe we don't want to
2926
# expose a path here but rather a config ID and its associated
2927
# object </hand wawe>.
2928
return urlutils.join(self.transport.external_url(), self.file_name)
2931
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
2932
# unlockable stores for use with objects that can already ensure the locking
2933
# (think branches). If different stores (not based on ConfigObj) are created,
2934
# they may face the same issue.
2937
class LockableIniFileStore(TransportIniFileStore):
2938
"""A ConfigObjStore using locks on save to ensure store integrity."""
2940
def __init__(self, transport, file_name, lock_dir_name=None):
2941
"""A config Store using ConfigObj for storage.
2943
:param transport: The transport object where the config file is located.
2945
:param file_name: The config file basename in the transport directory.
2947
if lock_dir_name is None:
2948
lock_dir_name = 'lock'
2949
self.lock_dir_name = lock_dir_name
2950
super(LockableIniFileStore, self).__init__(transport, file_name)
2951
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
2953
def lock_write(self, token=None):
2954
"""Takes a write lock in the directory containing the config file.
2956
If the directory doesn't exist it is created.
2958
# FIXME: This doesn't check the ownership of the created directories as
2959
# ensure_config_dir_exists does. It should if the transport is local
2960
# -- vila 2011-04-06
2961
self.transport.create_prefix()
2962
return self._lock.lock_write(token)
2967
def break_lock(self):
2968
self._lock.break_lock()
2972
# We need to be able to override the undecorated implementation
2973
self.save_without_locking()
2975
def save_without_locking(self):
2976
super(LockableIniFileStore, self).save()
2979
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
2980
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
2981
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
2983
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
2984
# functions or a registry will make it easier and clearer for tests, focusing
2985
# on the relevant parts of the API that needs testing -- vila 20110503 (based
2986
# on a poolie's remark)
2987
class GlobalStore(LockableIniFileStore):
2989
def __init__(self, possible_transports=None):
2990
t = transport.get_transport_from_path(
2991
config_dir(), possible_transports=possible_transports)
2992
super(GlobalStore, self).__init__(t, 'bazaar.conf')
2996
class LocationStore(LockableIniFileStore):
2998
def __init__(self, possible_transports=None):
2999
t = transport.get_transport_from_path(
3000
config_dir(), possible_transports=possible_transports)
3001
super(LocationStore, self).__init__(t, 'locations.conf')
3002
self.id = 'locations'
3005
class BranchStore(TransportIniFileStore):
3007
def __init__(self, branch):
3008
super(BranchStore, self).__init__(branch.control_transport,
3010
self.branch = branch
3013
def lock_write(self, token=None):
3014
return self.branch.lock_write(token)
3017
return self.branch.unlock()
3021
# We need to be able to override the undecorated implementation
3022
self.save_without_locking()
3024
def save_without_locking(self):
3025
super(BranchStore, self).save()
3028
class ControlStore(LockableIniFileStore):
3030
def __init__(self, bzrdir):
3031
super(ControlStore, self).__init__(bzrdir.transport,
3033
lock_dir_name='branch_lock')
3036
class SectionMatcher(object):
3037
"""Select sections into a given Store.
3039
This is intended to be used to postpone getting an iterable of sections
3043
def __init__(self, store):
3046
def get_sections(self):
3047
# This is where we require loading the store so we can see all defined
3049
sections = self.store.get_sections()
3050
# Walk the revisions in the order provided
3051
for store, s in sections:
3055
def match(self, section):
3056
"""Does the proposed section match.
3058
:param section: A Section object.
3060
:returns: True if the section matches, False otherwise.
3062
raise NotImplementedError(self.match)
3065
class NameMatcher(SectionMatcher):
3067
def __init__(self, store, section_id):
3068
super(NameMatcher, self).__init__(store)
3069
self.section_id = section_id
3071
def match(self, section):
3072
return section.id == self.section_id
3075
class LocationSection(Section):
3077
def __init__(self, section, length, extra_path):
3078
super(LocationSection, self).__init__(section.id, section.options)
3079
self.length = length
3080
self.extra_path = extra_path
3081
self.locals = {'relpath': extra_path,
3082
'basename': urlutils.basename(extra_path)}
3084
def get(self, name, default=None, expand=True):
3085
value = super(LocationSection, self).get(name, default)
3086
if value is not None and expand:
3087
policy_name = self.get(name + ':policy', None)
3088
policy = _policy_value.get(policy_name, POLICY_NONE)
3089
if policy == POLICY_APPENDPATH:
3090
value = urlutils.join(value, self.extra_path)
3091
# expand section local options right now (since POLICY_APPENDPATH
3092
# will never add options references, it's ok to expand after it).
3094
for is_ref, chunk in iter_option_refs(value):
3096
chunks.append(chunk)
3099
if ref in self.locals:
3100
chunks.append(self.locals[ref])
3102
chunks.append(chunk)
3103
value = ''.join(chunks)
3107
class LocationMatcher(SectionMatcher):
3109
def __init__(self, store, location):
3110
super(LocationMatcher, self).__init__(store)
3111
if location.startswith('file://'):
3112
location = urlutils.local_path_from_url(location)
3113
self.location = location
3115
def _get_matching_sections(self):
3116
"""Get all sections matching ``location``."""
3117
# We slightly diverge from LocalConfig here by allowing the no-name
3118
# section as the most generic one and the lower priority.
3119
no_name_section = None
3121
# Filter out the no_name_section so _iter_for_location_by_parts can be
3122
# used (it assumes all sections have a name).
3123
for _, section in self.store.get_sections():
3124
if section.id is None:
3125
no_name_section = section
3127
all_sections.append(section)
3128
# Unfortunately _iter_for_location_by_parts deals with section names so
3129
# we have to resync.
3130
filtered_sections = _iter_for_location_by_parts(
3131
[s.id for s in all_sections], self.location)
3132
iter_all_sections = iter(all_sections)
3133
matching_sections = []
3134
if no_name_section is not None:
3135
matching_sections.append(
3136
LocationSection(no_name_section, 0, self.location))
3137
for section_id, extra_path, length in filtered_sections:
3138
# a section id is unique for a given store so it's safe to take the
3139
# first matching section while iterating. Also, all filtered
3140
# sections are part of 'all_sections' and will always be found
3143
section = iter_all_sections.next()
3144
if section_id == section.id:
3145
matching_sections.append(
3146
LocationSection(section, length, extra_path))
3148
return matching_sections
3150
def get_sections(self):
3151
# Override the default implementation as we want to change the order
3152
matching_sections = self._get_matching_sections()
3153
# We want the longest (aka more specific) locations first
3154
sections = sorted(matching_sections,
3155
key=lambda section: (section.length, section.id),
3157
# Sections mentioning 'ignore_parents' restrict the selection
3158
for section in sections:
3159
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3160
ignore = section.get('ignore_parents', None)
3161
if ignore is not None:
3162
ignore = ui.bool_from_string(ignore)
3165
# Finally, we have a valid section
3166
yield self.store, section
3169
_option_ref_re = lazy_regex.lazy_compile('({[^{}\n]+})')
3170
"""Describes an expandable option reference.
3172
We want to match the most embedded reference first.
3174
I.e. for '{{foo}}' we will get '{foo}',
3175
for '{bar{baz}}' we will get '{baz}'
3178
def iter_option_refs(string):
3179
# Split isolate refs so every other chunk is a ref
3181
for chunk in _option_ref_re.split(string):
3186
class Stack(object):
3187
"""A stack of configurations where an option can be defined"""
3189
def __init__(self, sections_def, store=None, mutable_section_id=None):
3190
"""Creates a stack of sections with an optional store for changes.
3192
:param sections_def: A list of Section or callables that returns an
3193
iterable of Section. This defines the Sections for the Stack and
3194
can be called repeatedly if needed.
3196
:param store: The optional Store where modifications will be
3197
recorded. If none is specified, no modifications can be done.
3199
:param mutable_section_id: The id of the MutableSection where changes
3200
are recorded. This requires the ``store`` parameter to be
3203
self.sections_def = sections_def
3205
self.mutable_section_id = mutable_section_id
3207
def get(self, name, expand=None):
3208
"""Return the *first* option value found in the sections.
3210
This is where we guarantee that sections coming from Store are loaded
3211
lazily: the loading is delayed until we need to either check that an
3212
option exists or get its value, which in turn may require to discover
3213
in which sections it can be defined. Both of these (section and option
3214
existence) require loading the store (even partially).
3216
:param name: The queried option.
3218
:param expand: Whether options references should be expanded.
3220
:returns: The value of the option.
3222
# FIXME: No caching of options nor sections yet -- vila 20110503
3224
expand = _get_expand_default_value()
3226
# Ensuring lazy loading is achieved by delaying section matching (which
3227
# implies querying the persistent storage) until it can't be avoided
3228
# anymore by using callables to describe (possibly empty) section
3230
for sections in self.sections_def:
3231
for store, section in sections():
3232
value = section.get(name)
3233
if value is not None:
3235
if value is not None:
3237
# If the option is registered, it may provide additional info about
3240
opt = option_registry.get(name)
3244
def expand_and_convert(val):
3245
# This may need to be called twice if the value is None or ends up
3246
# being None during expansion or conversion.
3249
if isinstance(val, basestring):
3250
val = self._expand_options_in_string(val)
3252
trace.warning('Cannot expand "%s":'
3253
' %s does not support option expansion'
3254
% (name, type(val)))
3256
val = opt.convert_from_unicode(val)
3258
value = expand_and_convert(value)
3259
if opt is not None and value is None:
3260
# If the option is registered, it may provide a default value
3261
value = opt.get_default()
3262
value = expand_and_convert(value)
3263
for hook in ConfigHooks['get']:
3264
hook(self, name, value)
3267
def expand_options(self, string, env=None):
3268
"""Expand option references in the string in the configuration context.
3270
:param string: The string containing option(s) to expand.
3272
:param env: An option dict defining additional configuration options or
3273
overriding existing ones.
3275
:returns: The expanded string.
3277
return self._expand_options_in_string(string, env)
3279
def _expand_options_in_string(self, string, env=None, _refs=None):
3280
"""Expand options in the string in the configuration context.
3282
:param string: The string to be expanded.
3284
:param env: An option dict defining additional configuration options or
3285
overriding existing ones.
3287
:param _refs: Private list (FIFO) containing the options being expanded
3290
:returns: The expanded string.
3293
# Not much to expand there
3296
# What references are currently resolved (to detect loops)
3299
# We need to iterate until no more refs appear ({{foo}} will need two
3300
# iterations for example).
3305
for is_ref, chunk in iter_option_refs(result):
3307
chunks.append(chunk)
3312
raise errors.OptionExpansionLoop(string, _refs)
3314
value = self._expand_option(name, env, _refs)
3316
raise errors.ExpandingUnknownOption(name, string)
3317
chunks.append(value)
3319
result = ''.join(chunks)
3322
def _expand_option(self, name, env, _refs):
3323
if env is not None and name in env:
3324
# Special case, values provided in env takes precedence over
3328
value = self.get(name, expand=False)
3329
value = self._expand_options_in_string(value, env, _refs)
3332
def _get_mutable_section(self):
3333
"""Get the MutableSection for the Stack.
3335
This is where we guarantee that the mutable section is lazily loaded:
3336
this means we won't load the corresponding store before setting a value
3337
or deleting an option. In practice the store will often be loaded but
3338
this helps catching some programming errors.
3340
section = self.store.get_mutable_section(self.mutable_section_id)
3343
def set(self, name, value):
3344
"""Set a new value for the option."""
3345
section = self._get_mutable_section()
3346
section.set(name, value)
3347
for hook in ConfigHooks['set']:
3348
hook(self, name, value)
3350
def remove(self, name):
3351
"""Remove an existing option."""
3352
section = self._get_mutable_section()
3353
section.remove(name)
3354
for hook in ConfigHooks['remove']:
3358
# Mostly for debugging use
3359
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3361
def _get_overrides(self):
3362
# Hack around library_state.initialize never called
3363
if bzrlib.global_state is not None:
3364
return bzrlib.global_state.cmdline_overrides.get_sections()
3368
class _CompatibleStack(Stack):
3369
"""Place holder for compatibility with previous design.
3371
This is intended to ease the transition from the Config-based design to the
3372
Stack-based design and should not be used nor relied upon by plugins.
3374
One assumption made here is that the daughter classes will all use Stores
3375
derived from LockableIniFileStore).
3377
It implements set() and remove () by re-loading the store before applying
3378
the modification and saving it.
3380
The long term plan being to implement a single write by store to save
3381
all modifications, this class should not be used in the interim.
3384
def set(self, name, value):
3387
super(_CompatibleStack, self).set(name, value)
3388
# Force a write to persistent storage
3391
def remove(self, name):
3394
super(_CompatibleStack, self).remove(name)
3395
# Force a write to persistent storage
3399
class GlobalStack(_CompatibleStack):
3400
"""Global options only stack."""
3404
gstore = GlobalStore()
3405
super(GlobalStack, self).__init__(
3406
[self._get_overrides, NameMatcher(gstore, 'DEFAULT').get_sections],
3407
gstore, mutable_section_id='DEFAULT')
3410
class LocationStack(_CompatibleStack):
3411
"""Per-location options falling back to global options stack."""
3413
def __init__(self, location):
3414
"""Make a new stack for a location and global configuration.
3416
:param location: A URL prefix to """
3417
lstore = LocationStore()
3418
if location.startswith('file://'):
3419
location = urlutils.local_path_from_url(location)
3420
matcher = LocationMatcher(lstore, location)
3421
gstore = GlobalStore()
3422
super(LocationStack, self).__init__(
3423
[self._get_overrides,
3424
matcher.get_sections, NameMatcher(gstore, 'DEFAULT').get_sections],
3425
lstore, mutable_section_id=location)
3428
class BranchStack(_CompatibleStack):
3429
"""Per-location options falling back to branch then global options stack."""
3431
def __init__(self, branch):
3432
bstore = branch._get_config_store()
3433
lstore = LocationStore()
3434
matcher = LocationMatcher(lstore, branch.base)
3435
gstore = GlobalStore()
3436
super(BranchStack, self).__init__(
3437
[self._get_overrides,
3438
matcher.get_sections, bstore.get_sections,
3439
NameMatcher(gstore, 'DEFAULT').get_sections],
3441
self.branch = branch
3444
class RemoteControlStack(_CompatibleStack):
3445
"""Remote control-only options stack."""
3447
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
3448
# with the stack used for remote bzr dirs. RemoteControlStack only uses
3449
# control.conf and is used only for stack options.
3451
def __init__(self, bzrdir):
3452
cstore = bzrdir._get_config_store()
3453
super(RemoteControlStack, self).__init__(
3454
[cstore.get_sections],
3456
self.bzrdir = bzrdir
3459
class RemoteBranchStack(_CompatibleStack):
3460
"""Remote branch-only options stack."""
3462
# FIXME 2011-11-22 JRV This should probably be renamed to avoid confusion
3463
# with the stack used for remote branches. RemoteBranchStack only uses
3464
# branch.conf and is used only for the stack options.
3466
def __init__(self, branch):
3467
bstore = branch._get_config_store()
3468
super(RemoteBranchStack, self).__init__(
3469
[bstore.get_sections],
3471
self.branch = branch
3473
# Use a an empty dict to initialize an empty configobj avoiding all
3474
# parsing and encoding checks
3475
_quoting_config = configobj.ConfigObj(
3476
{}, encoding='utf-8', interpolation=False)
3478
class cmd_config(commands.Command):
3479
__doc__ = """Display, set or remove a configuration option.
3481
Display the active value for a given option.
3483
If --all is specified, NAME is interpreted as a regular expression and all
3484
matching options are displayed mentioning their scope. The active value
3485
that bzr will take into account is the first one displayed for each option.
3487
If no NAME is given, --all .* is implied.
3489
Setting a value is achieved by using name=value without spaces. The value
3490
is set in the most relevant scope and can be checked by displaying the
3494
takes_args = ['name?']
3498
# FIXME: This should be a registry option so that plugins can register
3499
# their own config files (or not) and will also address
3500
# http://pad.lv/788991 -- vila 20101115
3501
commands.Option('scope', help='Reduce the scope to the specified'
3502
' configuration file.',
3504
commands.Option('all',
3505
help='Display all the defined values for the matching options.',
3507
commands.Option('remove', help='Remove the option from'
3508
' the configuration file.'),
3511
_see_also = ['configuration']
3513
@commands.display_command
3514
def run(self, name=None, all=False, directory=None, scope=None,
3516
if directory is None:
3518
directory = urlutils.normalize_url(directory)
3520
raise errors.BzrError(
3521
'--all and --remove are mutually exclusive.')
3523
# Delete the option in the given scope
3524
self._remove_config_option(name, directory, scope)
3526
# Defaults to all options
3527
self._show_matching_options('.*', directory, scope)
3530
name, value = name.split('=', 1)
3532
# Display the option(s) value(s)
3534
self._show_matching_options(name, directory, scope)
3536
self._show_value(name, directory, scope)
3539
raise errors.BzrError(
3540
'Only one option can be set.')
3541
# Set the option value
3542
self._set_config_option(name, value, directory, scope)
3544
def _get_stack(self, directory, scope=None):
3545
"""Get the configuration stack specified by ``directory`` and ``scope``.
3547
:param directory: Where the configurations are derived from.
3549
:param scope: A specific config to start from.
3551
# FIXME: scope should allow access to plugin-specific stacks (even
3552
# reduced to the plugin-specific store), related to
3553
# http://pad.lv/788991 -- vila 2011-11-15
3554
if scope is not None:
3555
if scope == 'bazaar':
3556
return GlobalStack()
3557
elif scope == 'locations':
3558
return LocationStack(directory)
3559
elif scope == 'branch':
3561
controldir.ControlDir.open_containing_tree_or_branch(
3563
return br.get_config_stack()
3564
raise errors.NoSuchConfig(scope)
3568
controldir.ControlDir.open_containing_tree_or_branch(
3570
return br.get_config_stack()
3571
except errors.NotBranchError:
3572
return LocationStack(directory)
3574
def _show_value(self, name, directory, scope):
3575
conf = self._get_stack(directory, scope)
3576
value = conf.get(name, expand=True)
3577
if value is not None:
3578
# Quote the value appropriately
3579
value = _quoting_config._quote(value)
3580
self.outf.write('%s\n' % (value,))
3582
raise errors.NoSuchConfigOption(name)
3584
def _show_matching_options(self, name, directory, scope):
3585
name = lazy_regex.lazy_compile(name)
3586
# We want any error in the regexp to be raised *now* so we need to
3587
# avoid the delay introduced by the lazy regexp. But, we still do
3588
# want the nicer errors raised by lazy_regex.
3589
name._compile_and_collapse()
3592
conf = self._get_stack(directory, scope)
3593
for sections in conf.sections_def:
3594
for store, section in sections():
3595
for oname in section.iter_option_names():
3596
if name.search(oname):
3597
if cur_store_id != store.id:
3598
# Explain where the options are defined
3599
self.outf.write('%s:\n' % (store.id,))
3600
cur_store_id = store.id
3602
if (section.id not in (None, 'DEFAULT')
3603
and cur_section != section.id):
3604
# Display the section if it's not the default (or
3606
self.outf.write(' [%s]\n' % (section.id,))
3607
cur_section = section.id
3608
value = section.get(oname, expand=False)
3609
value = _quoting_config._quote(value)
3610
self.outf.write(' %s = %s\n' % (oname, value))
3612
def _set_config_option(self, name, value, directory, scope):
3613
conf = self._get_stack(directory, scope)
3614
conf.set(name, value)
3616
def _remove_config_option(self, name, directory, scope):
3618
raise errors.BzrCommandError(
3619
'--remove expects an option to remove.')
3620
conf = self._get_stack(directory, scope)
3624
raise errors.NoSuchConfigOption(name)
3629
# We need adapters that can build a Store or a Stack in a test context. Test
3630
# classes, based on TestCaseWithTransport, can use the registry to parametrize
3631
# themselves. The builder will receive a test instance and should return a
3632
# ready-to-use store or stack. Plugins that define new store/stacks can also
3633
# register themselves here to be tested against the tests defined in
3634
# bzrlib.tests.test_config. Note that the builder can be called multiple times
3635
# for the same test.
3637
# The registered object should be a callable receiving a test instance
3638
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
3640
test_store_builder_registry = registry.Registry()
3642
# The registered object should be a callable receiving a test instance
3643
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
3645
test_stack_builder_registry = registry.Registry()