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.
2779
def __init__(self, transport, file_name):
2780
"""A config Store using ConfigObj for storage.
2782
:param transport: The transport object where the config file is located.
2784
:param file_name: The config file basename in the transport directory.
2786
super(IniFileStore, self).__init__()
2787
self.transport = transport
2788
self.file_name = file_name
2789
self._config_obj = None
2791
def is_loaded(self):
2792
return self._config_obj != None
2795
self._config_obj = None
2798
"""Load the store from the associated file."""
2799
if self.is_loaded():
2802
content = self.transport.get_bytes(self.file_name)
2803
except errors.PermissionDenied:
2804
trace.warning("Permission denied while trying to load "
2805
"configuration store %s.", self.external_url())
2807
self._load_from_string(content)
2808
for hook in ConfigHooks['load']:
2811
def _load_from_string(self, bytes):
2812
"""Create a config store from a string.
2814
:param bytes: A string representing the file content.
2816
if self.is_loaded():
2817
raise AssertionError('Already loaded: %r' % (self._config_obj,))
2818
co_input = StringIO(bytes)
2820
# The config files are always stored utf8-encoded
2821
self._config_obj = ConfigObj(co_input, encoding='utf-8',
2823
except configobj.ConfigObjError, e:
2824
self._config_obj = None
2825
raise errors.ParseConfigError(e.errors, self.external_url())
2826
except UnicodeDecodeError:
2827
raise errors.ConfigContentError(self.external_url())
2830
if not self.is_loaded():
2834
self._config_obj.write(out)
2835
self.transport.put_bytes(self.file_name, out.getvalue())
2836
for hook in ConfigHooks['save']:
2839
def external_url(self):
2840
# FIXME: external_url should really accepts an optional relpath
2841
# parameter (bug #750169) :-/ -- vila 2011-04-04
2842
# The following will do in the interim but maybe we don't want to
2843
# expose a path here but rather a config ID and its associated
2844
# object </hand wawe>.
2845
return urlutils.join(self.transport.external_url(), self.file_name)
2847
def get_sections(self):
2848
"""Get the configobj section in the file order.
2850
:returns: An iterable of (store, section).
2852
# We need a loaded store
2855
except (errors.NoSuchFile, errors.PermissionDenied):
2856
# If the file can't be read, there is no sections
2858
cobj = self._config_obj
2860
yield self, self.readonly_section_class(None, cobj)
2861
for section_name in cobj.sections:
2863
self.readonly_section_class(section_name,
2864
cobj[section_name]))
2866
def get_mutable_section(self, section_id=None):
2867
# We need a loaded store
2870
except errors.NoSuchFile:
2871
# The file doesn't exist, let's pretend it was empty
2872
self._load_from_string('')
2873
if section_id is None:
2874
section = self._config_obj
2876
section = self._config_obj.setdefault(section_id, {})
2877
return self.mutable_section_class(section_id, section)
2880
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
2881
# unlockable stores for use with objects that can already ensure the locking
2882
# (think branches). If different stores (not based on ConfigObj) are created,
2883
# they may face the same issue.
2886
class LockableIniFileStore(IniFileStore):
2887
"""A ConfigObjStore using locks on save to ensure store integrity."""
2889
def __init__(self, transport, file_name, lock_dir_name=None):
2890
"""A config Store using ConfigObj for storage.
2892
:param transport: The transport object where the config file is located.
2894
:param file_name: The config file basename in the transport directory.
2896
if lock_dir_name is None:
2897
lock_dir_name = 'lock'
2898
self.lock_dir_name = lock_dir_name
2899
super(LockableIniFileStore, self).__init__(transport, file_name)
2900
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
2902
def lock_write(self, token=None):
2903
"""Takes a write lock in the directory containing the config file.
2905
If the directory doesn't exist it is created.
2907
# FIXME: This doesn't check the ownership of the created directories as
2908
# ensure_config_dir_exists does. It should if the transport is local
2909
# -- vila 2011-04-06
2910
self.transport.create_prefix()
2911
return self._lock.lock_write(token)
2916
def break_lock(self):
2917
self._lock.break_lock()
2921
# We need to be able to override the undecorated implementation
2922
self.save_without_locking()
2924
def save_without_locking(self):
2925
super(LockableIniFileStore, self).save()
2928
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
2929
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
2930
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
2932
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
2933
# functions or a registry will make it easier and clearer for tests, focusing
2934
# on the relevant parts of the API that needs testing -- vila 20110503 (based
2935
# on a poolie's remark)
2936
class GlobalStore(LockableIniFileStore):
2938
def __init__(self, possible_transports=None):
2939
t = transport.get_transport_from_path(
2940
config_dir(), possible_transports=possible_transports)
2941
super(GlobalStore, self).__init__(t, 'bazaar.conf')
2945
class LocationStore(LockableIniFileStore):
2947
def __init__(self, possible_transports=None):
2948
t = transport.get_transport_from_path(
2949
config_dir(), possible_transports=possible_transports)
2950
super(LocationStore, self).__init__(t, 'locations.conf')
2951
self.id = 'locations'
2954
class BranchStore(IniFileStore):
2956
def __init__(self, branch):
2957
super(BranchStore, self).__init__(branch.control_transport,
2959
self.branch = branch
2962
def lock_write(self, token=None):
2963
return self.branch.lock_write(token)
2966
return self.branch.unlock()
2970
# We need to be able to override the undecorated implementation
2971
self.save_without_locking()
2973
def save_without_locking(self):
2974
super(BranchStore, self).save()
2977
class ControlStore(LockableIniFileStore):
2979
def __init__(self, bzrdir):
2980
super(ControlStore, self).__init__(bzrdir.transport,
2982
lock_dir_name='branch_lock')
2985
class SectionMatcher(object):
2986
"""Select sections into a given Store.
2988
This is intended to be used to postpone getting an iterable of sections
2992
def __init__(self, store):
2995
def get_sections(self):
2996
# This is where we require loading the store so we can see all defined
2998
sections = self.store.get_sections()
2999
# Walk the revisions in the order provided
3000
for store, s in sections:
3004
def match(self, section):
3005
"""Does the proposed section match.
3007
:param section: A Section object.
3009
:returns: True if the section matches, False otherwise.
3011
raise NotImplementedError(self.match)
3014
class NameMatcher(SectionMatcher):
3016
def __init__(self, store, section_id):
3017
super(NameMatcher, self).__init__(store)
3018
self.section_id = section_id
3020
def match(self, section):
3021
return section.id == self.section_id
3024
class LocationSection(Section):
3026
def __init__(self, section, length, extra_path):
3027
super(LocationSection, self).__init__(section.id, section.options)
3028
self.length = length
3029
self.extra_path = extra_path
3030
self.locals = {'relpath': extra_path,
3031
'basename': urlutils.basename(extra_path)}
3033
def get(self, name, default=None, expand=True):
3034
value = super(LocationSection, self).get(name, default)
3035
if value is not None and expand:
3036
policy_name = self.get(name + ':policy', None)
3037
policy = _policy_value.get(policy_name, POLICY_NONE)
3038
if policy == POLICY_APPENDPATH:
3039
value = urlutils.join(value, self.extra_path)
3040
# expand section local options right now (since POLICY_APPENDPATH
3041
# will never add options references, it's ok to expand after it).
3043
for is_ref, chunk in iter_option_refs(value):
3045
chunks.append(chunk)
3048
if ref in self.locals:
3049
chunks.append(self.locals[ref])
3051
chunks.append(chunk)
3052
value = ''.join(chunks)
3056
class LocationMatcher(SectionMatcher):
3058
def __init__(self, store, location):
3059
super(LocationMatcher, self).__init__(store)
3060
if location.startswith('file://'):
3061
location = urlutils.local_path_from_url(location)
3062
self.location = location
3064
def _get_matching_sections(self):
3065
"""Get all sections matching ``location``."""
3066
# We slightly diverge from LocalConfig here by allowing the no-name
3067
# section as the most generic one and the lower priority.
3068
no_name_section = None
3070
# Filter out the no_name_section so _iter_for_location_by_parts can be
3071
# used (it assumes all sections have a name).
3072
for _, section in self.store.get_sections():
3073
if section.id is None:
3074
no_name_section = section
3076
all_sections.append(section)
3077
# Unfortunately _iter_for_location_by_parts deals with section names so
3078
# we have to resync.
3079
filtered_sections = _iter_for_location_by_parts(
3080
[s.id for s in all_sections], self.location)
3081
iter_all_sections = iter(all_sections)
3082
matching_sections = []
3083
if no_name_section is not None:
3084
matching_sections.append(
3085
LocationSection(no_name_section, 0, self.location))
3086
for section_id, extra_path, length in filtered_sections:
3087
# a section id is unique for a given store so it's safe to take the
3088
# first matching section while iterating. Also, all filtered
3089
# sections are part of 'all_sections' and will always be found
3092
section = iter_all_sections.next()
3093
if section_id == section.id:
3094
matching_sections.append(
3095
LocationSection(section, length, extra_path))
3097
return matching_sections
3099
def get_sections(self):
3100
# Override the default implementation as we want to change the order
3101
matching_sections = self._get_matching_sections()
3102
# We want the longest (aka more specific) locations first
3103
sections = sorted(matching_sections,
3104
key=lambda section: (section.length, section.id),
3106
# Sections mentioning 'ignore_parents' restrict the selection
3107
for section in sections:
3108
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3109
ignore = section.get('ignore_parents', None)
3110
if ignore is not None:
3111
ignore = ui.bool_from_string(ignore)
3114
# Finally, we have a valid section
3115
yield self.store, section
3118
_option_ref_re = lazy_regex.lazy_compile('({[^{}]+})')
3119
"""Describes an expandable option reference.
3121
We want to match the most embedded reference first.
3123
I.e. for '{{foo}}' we will get '{foo}',
3124
for '{bar{baz}}' we will get '{baz}'
3127
def iter_option_refs(string):
3128
# Split isolate refs so every other chunk is a ref
3130
for chunk in _option_ref_re.split(string):
3135
class Stack(object):
3136
"""A stack of configurations where an option can be defined"""
3138
def __init__(self, sections_def, store=None, mutable_section_id=None):
3139
"""Creates a stack of sections with an optional store for changes.
3141
:param sections_def: A list of Section or callables that returns an
3142
iterable of Section. This defines the Sections for the Stack and
3143
can be called repeatedly if needed.
3145
:param store: The optional Store where modifications will be
3146
recorded. If none is specified, no modifications can be done.
3148
:param mutable_section_id: The id of the MutableSection where changes
3149
are recorded. This requires the ``store`` parameter to be
3152
self.sections_def = sections_def
3154
self.mutable_section_id = mutable_section_id
3156
def get(self, name, expand=None):
3157
"""Return the *first* option value found in the sections.
3159
This is where we guarantee that sections coming from Store are loaded
3160
lazily: the loading is delayed until we need to either check that an
3161
option exists or get its value, which in turn may require to discover
3162
in which sections it can be defined. Both of these (section and option
3163
existence) require loading the store (even partially).
3165
:param name: The queried option.
3167
:param expand: Whether options references should be expanded.
3169
:returns: The value of the option.
3171
# FIXME: No caching of options nor sections yet -- vila 20110503
3173
expand = _get_expand_default_value()
3175
# Ensuring lazy loading is achieved by delaying section matching (which
3176
# implies querying the persistent storage) until it can't be avoided
3177
# anymore by using callables to describe (possibly empty) section
3179
for sections in self.sections_def:
3180
for store, section in sections():
3181
value = section.get(name)
3182
if value is not None:
3184
if value is not None:
3186
# If the option is registered, it may provide additional info about
3189
opt = option_registry.get(name)
3193
def expand_and_convert(val):
3194
# This may need to be called twice if the value is None or ends up
3195
# being None during expansion or conversion.
3198
if isinstance(val, basestring):
3199
val = self._expand_options_in_string(val)
3201
trace.warning('Cannot expand "%s":'
3202
' %s does not support option expansion'
3203
% (name, type(val)))
3205
val = opt.convert_from_unicode(val)
3207
value = expand_and_convert(value)
3208
if opt is not None and value is None:
3209
# If the option is registered, it may provide a default value
3210
value = opt.get_default()
3211
value = expand_and_convert(value)
3212
for hook in ConfigHooks['get']:
3213
hook(self, name, value)
3216
def expand_options(self, string, env=None):
3217
"""Expand option references in the string in the configuration context.
3219
:param string: The string containing option(s) to expand.
3221
:param env: An option dict defining additional configuration options or
3222
overriding existing ones.
3224
:returns: The expanded string.
3226
return self._expand_options_in_string(string, env)
3228
def _expand_options_in_string(self, string, env=None, _refs=None):
3229
"""Expand options in the string in the configuration context.
3231
:param string: The string to be expanded.
3233
:param env: An option dict defining additional configuration options or
3234
overriding existing ones.
3236
:param _refs: Private list (FIFO) containing the options being expanded
3239
:returns: The expanded string.
3242
# Not much to expand there
3245
# What references are currently resolved (to detect loops)
3248
# We need to iterate until no more refs appear ({{foo}} will need two
3249
# iterations for example).
3254
for is_ref, chunk in iter_option_refs(result):
3256
chunks.append(chunk)
3261
raise errors.OptionExpansionLoop(string, _refs)
3263
value = self._expand_option(name, env, _refs)
3265
raise errors.ExpandingUnknownOption(name, string)
3266
chunks.append(value)
3268
result = ''.join(chunks)
3271
def _expand_option(self, name, env, _refs):
3272
if env is not None and name in env:
3273
# Special case, values provided in env takes precedence over
3277
value = self.get(name, expand=False)
3278
value = self._expand_options_in_string(value, env, _refs)
3281
def _get_mutable_section(self):
3282
"""Get the MutableSection for the Stack.
3284
This is where we guarantee that the mutable section is lazily loaded:
3285
this means we won't load the corresponding store before setting a value
3286
or deleting an option. In practice the store will often be loaded but
3287
this helps catching some programming errors.
3289
section = self.store.get_mutable_section(self.mutable_section_id)
3292
def set(self, name, value):
3293
"""Set a new value for the option."""
3294
section = self._get_mutable_section()
3295
section.set(name, value)
3296
for hook in ConfigHooks['set']:
3297
hook(self, name, value)
3299
def remove(self, name):
3300
"""Remove an existing option."""
3301
section = self._get_mutable_section()
3302
section.remove(name)
3303
for hook in ConfigHooks['remove']:
3307
# Mostly for debugging use
3308
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3310
def _get_overrides(self):
3311
# Hack around library_state.initialize never called
3312
if bzrlib.global_state is not None:
3313
return bzrlib.global_state.cmdline_overrides.get_sections()
3317
class _CompatibleStack(Stack):
3318
"""Place holder for compatibility with previous design.
3320
This is intended to ease the transition from the Config-based design to the
3321
Stack-based design and should not be used nor relied upon by plugins.
3323
One assumption made here is that the daughter classes will all use Stores
3324
derived from LockableIniFileStore).
3326
It implements set() and remove () by re-loading the store before applying
3327
the modification and saving it.
3329
The long term plan being to implement a single write by store to save
3330
all modifications, this class should not be used in the interim.
3333
def set(self, name, value):
3336
super(_CompatibleStack, self).set(name, value)
3337
# Force a write to persistent storage
3340
def remove(self, name):
3343
super(_CompatibleStack, self).remove(name)
3344
# Force a write to persistent storage
3348
class GlobalStack(_CompatibleStack):
3349
"""Global options only stack."""
3353
gstore = GlobalStore()
3354
super(GlobalStack, self).__init__(
3355
[self._get_overrides, NameMatcher(gstore, 'DEFAULT').get_sections],
3356
gstore, mutable_section_id='DEFAULT')
3359
class LocationStack(_CompatibleStack):
3360
"""Per-location options falling back to global options stack."""
3362
def __init__(self, location):
3363
"""Make a new stack for a location and global configuration.
3365
:param location: A URL prefix to """
3366
lstore = LocationStore()
3367
if location is not None:
3368
location = urlutils.normalize_url(location)
3369
if location.startswith('file://'):
3370
location = urlutils.local_path_from_url(location)
3371
matcher = LocationMatcher(lstore, location)
3372
gstore = GlobalStore()
3373
super(LocationStack, self).__init__(
3374
[self._get_overrides,
3375
matcher.get_sections, NameMatcher(gstore, 'DEFAULT').get_sections],
3376
lstore, mutable_section_id=location)
3379
class BranchStack(_CompatibleStack):
3380
"""Per-location options falling back to branch then global options stack."""
3382
def __init__(self, branch):
3383
bstore = BranchStore(branch)
3384
lstore = LocationStore()
3385
matcher = LocationMatcher(lstore, branch.base)
3386
gstore = GlobalStore()
3387
super(BranchStack, self).__init__(
3388
[self._get_overrides,
3389
matcher.get_sections, bstore.get_sections,
3390
NameMatcher(gstore, 'DEFAULT').get_sections],
3392
self.branch = branch
3395
class RemoteControlStack(_CompatibleStack):
3396
"""Remote control-only options stack."""
3398
def __init__(self, bzrdir):
3399
cstore = ControlStore(bzrdir)
3400
super(RemoteControlStack, self).__init__(
3401
[cstore.get_sections],
3403
self.bzrdir = bzrdir
3406
class RemoteBranchStack(_CompatibleStack):
3407
"""Remote branch-only options stack."""
3409
def __init__(self, branch):
3410
bstore = BranchStore(branch)
3411
super(RemoteBranchStack, self).__init__(
3412
[bstore.get_sections],
3414
self.branch = branch
3416
# Use a an empty dict to initialize an empty configobj avoiding all
3417
# parsing and encoding checks
3418
_quoting_config = configobj.ConfigObj(
3419
{}, encoding='utf-8', interpolation=False)
3421
class cmd_config(commands.Command):
3422
__doc__ = """Display, set or remove a configuration option.
3424
Display the active value for a given option.
3426
If --all is specified, NAME is interpreted as a regular expression and all
3427
matching options are displayed mentioning their scope. The active value
3428
that bzr will take into account is the first one displayed for each option.
3430
If no NAME is given, --all .* is implied.
3432
Setting a value is achieved by using name=value without spaces. The value
3433
is set in the most relevant scope and can be checked by displaying the
3437
takes_args = ['name?']
3441
# FIXME: This should be a registry option so that plugins can register
3442
# their own config files (or not) and will also address
3443
# http://pad.lv/788991 -- vila 20101115
3444
commands.Option('scope', help='Reduce the scope to the specified'
3445
' configuration file',
3447
commands.Option('all',
3448
help='Display all the defined values for the matching options.',
3450
commands.Option('remove', help='Remove the option from'
3451
' the configuration file'),
3454
_see_also = ['configuration']
3456
@commands.display_command
3457
def run(self, name=None, all=False, directory=None, scope=None,
3459
if directory is None:
3461
directory = urlutils.normalize_url(directory)
3463
raise errors.BzrError(
3464
'--all and --remove are mutually exclusive.')
3466
# Delete the option in the given scope
3467
self._remove_config_option(name, directory, scope)
3469
# Defaults to all options
3470
self._show_matching_options('.*', directory, scope)
3473
name, value = name.split('=', 1)
3475
# Display the option(s) value(s)
3477
self._show_matching_options(name, directory, scope)
3479
self._show_value(name, directory, scope)
3482
raise errors.BzrError(
3483
'Only one option can be set.')
3484
# Set the option value
3485
self._set_config_option(name, value, directory, scope)
3487
def _get_stack(self, directory, scope=None):
3488
"""Get the configuration stack specified by ``directory`` and ``scope``.
3490
:param directory: Where the configurations are derived from.
3492
:param scope: A specific config to start from.
3494
# FIXME: scope should allow access to plugin-specific stacks (even
3495
# reduced to the plugin-specific store), related to
3496
# http://pad.lv/788991 -- vila 2011-11-15
3497
if scope is not None:
3498
if scope == 'bazaar':
3499
return GlobalStack()
3500
elif scope == 'locations':
3501
return LocationStack(directory)
3502
elif scope == 'branch':
3504
controldir.ControlDir.open_containing_tree_or_branch(
3506
return br.get_config_stack()
3507
raise errors.NoSuchConfig(scope)
3511
controldir.ControlDir.open_containing_tree_or_branch(
3513
return br.get_config_stack()
3514
except errors.NotBranchError:
3515
return LocationStack(directory)
3517
def _show_value(self, name, directory, scope):
3518
conf = self._get_stack(directory, scope)
3519
value = conf.get(name, expand=True)
3520
if value is not None:
3521
# Quote the value appropriately
3522
value = _quoting_config._quote(value)
3523
self.outf.write('%s\n' % (value,))
3525
raise errors.NoSuchConfigOption(name)
3527
def _show_matching_options(self, name, directory, scope):
3528
name = lazy_regex.lazy_compile(name)
3529
# We want any error in the regexp to be raised *now* so we need to
3530
# avoid the delay introduced by the lazy regexp. But, we still do
3531
# want the nicer errors raised by lazy_regex.
3532
name._compile_and_collapse()
3535
conf = self._get_stack(directory, scope)
3536
for sections in conf.sections_def:
3537
for store, section in sections():
3538
for oname in section.iter_option_names():
3539
if name.search(oname):
3540
if cur_store_id != store.id:
3541
# Explain where the options are defined
3542
self.outf.write('%s:\n' % (store.id,))
3543
cur_store_id = store.id
3545
if (section.id not in (None, 'DEFAULT')
3546
and cur_section != section.id):
3547
# Display the section if it's not the default (or
3549
self.outf.write(' [%s]\n' % (section.id,))
3550
cur_section = section.id
3551
value = section.get(oname, expand=False)
3552
value = _quoting_config._quote(value)
3553
self.outf.write(' %s = %s\n' % (oname, value))
3555
def _set_config_option(self, name, value, directory, scope):
3556
conf = self._get_stack(directory, scope)
3557
conf.set(name, value)
3559
def _remove_config_option(self, name, directory, scope):
3561
raise errors.BzrCommandError(
3562
'--remove expects an option to remove.')
3563
conf = self._get_stack(directory, scope)
3567
raise errors.NoSuchConfigOption(name)
3572
# We need adapters that can build a Store or a Stack in a test context. Test
3573
# classes, based on TestCaseWithTransport, can use the registry to parametrize
3574
# themselves. The builder will receive a test instance and should return a
3575
# ready-to-use store or stack. Plugins that define new store/stacks can also
3576
# register themselves here to be tested against the tests defined in
3577
# bzrlib.tests.test_config. Note that the builder can be called multiple times
3578
# for the same tests.
3580
# The registered object should be a callable receiving a test instance
3581
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
3583
test_store_builder_registry = registry.Registry()
3585
# The registered object should be a callable receiving a test instance
3586
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
3588
test_stack_builder_registry = registry.Registry()