1508
2258
configobj[name] = value
1510
2260
configobj.setdefault(section, {})[name] = value
2261
for hook in OldConfigHooks['set']:
2262
hook(self, name, value)
2263
self._set_configobj(configobj)
2265
def remove_option(self, option_name, section_name=None):
2266
configobj = self._get_configobj()
2267
if section_name is None:
2268
del configobj[option_name]
2270
del configobj[section_name][option_name]
2271
for hook in OldConfigHooks['remove']:
2272
hook(self, option_name)
1511
2273
self._set_configobj(configobj)
1513
2275
def _get_config_file(self):
1515
return StringIO(self._transport.get_bytes(self._filename))
2277
f = StringIO(self._transport.get_bytes(self._filename))
2278
for hook in OldConfigHooks['load']:
1516
2281
except errors.NoSuchFile:
1517
2282
return StringIO()
2283
except errors.PermissionDenied, e:
2284
trace.warning("Permission denied while trying to open "
2285
"configuration file %s.", urlutils.unescape_for_display(
2286
urlutils.join(self._transport.base, self._filename), "utf-8"))
2289
def _external_url(self):
2290
return urlutils.join(self._transport.external_url(), self._filename)
1519
2292
def _get_configobj(self):
1520
return ConfigObj(self._get_config_file(), encoding='utf-8')
2293
f = self._get_config_file()
2296
conf = ConfigObj(f, encoding='utf-8')
2297
except configobj.ConfigObjError, e:
2298
raise errors.ParseConfigError(e.errors, self._external_url())
2299
except UnicodeDecodeError:
2300
raise errors.ConfigContentError(self._external_url())
1522
2305
def _set_configobj(self, configobj):
1523
2306
out_file = StringIO()
1524
2307
configobj.write(out_file)
1525
2308
out_file.seek(0)
1526
2309
self._transport.put_file(self._filename, out_file)
2310
for hook in OldConfigHooks['save']:
2314
class Option(object):
2315
"""An option definition.
2317
The option *values* are stored in config files and found in sections.
2319
Here we define various properties about the option itself, its default
2320
value, how to convert it from stores, what to do when invalid values are
2321
encoutered, in which config files it can be stored.
2324
def __init__(self, name, default=None, default_from_env=None,
2326
from_unicode=None, invalid=None):
2327
"""Build an option definition.
2329
:param name: the name used to refer to the option.
2331
:param default: the default value to use when none exist in the config
2332
stores. This is either a string that ``from_unicode`` will convert
2333
into the proper type or a python object that can be stringified (so
2334
only the empty list is supported for example).
2336
:param default_from_env: A list of environment variables which can
2337
provide a default value. 'default' will be used only if none of the
2338
variables specified here are set in the environment.
2340
:param help: a doc string to explain the option to the user.
2342
:param from_unicode: a callable to convert the unicode string
2343
representing the option value in a store. This is not called for
2346
:param invalid: the action to be taken when an invalid value is
2347
encountered in a store. This is called only when from_unicode is
2348
invoked to convert a string and returns None or raise ValueError or
2349
TypeError. Accepted values are: None (ignore invalid values),
2350
'warning' (emit a warning), 'error' (emit an error message and
2353
if default_from_env is None:
2354
default_from_env = []
2356
# Convert the default value to a unicode string so all values are
2357
# strings internally before conversion (via from_unicode) is attempted.
2360
elif isinstance(default, list):
2361
# Only the empty list is supported
2363
raise AssertionError(
2364
'Only empty lists are supported as default values')
2366
elif isinstance(default, (str, unicode, bool, int, float)):
2367
# Rely on python to convert strings, booleans and integers
2368
self.default = u'%s' % (default,)
2370
# other python objects are not expected
2371
raise AssertionError('%r is not supported as a default value'
2373
self.default_from_env = default_from_env
2375
self.from_unicode = from_unicode
2376
if invalid and invalid not in ('warning', 'error'):
2377
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2378
self.invalid = invalid
2380
def convert_from_unicode(self, unicode_value):
2381
if self.from_unicode is None or unicode_value is None:
2382
# Don't convert or nothing to convert
2383
return unicode_value
2385
converted = self.from_unicode(unicode_value)
2386
except (ValueError, TypeError):
2387
# Invalid values are ignored
2389
if converted is None and self.invalid is not None:
2390
# The conversion failed
2391
if self.invalid == 'warning':
2392
trace.warning('Value "%s" is not valid for "%s"',
2393
unicode_value, self.name)
2394
elif self.invalid == 'error':
2395
raise errors.ConfigOptionValueError(self.name, unicode_value)
2398
def get_default(self):
2400
for var in self.default_from_env:
2402
# If the env variable is defined, its value is the default one
2403
value = os.environ[var]
2408
# Otherwise, fallback to the value defined at registration
2409
value = self.default
2412
def get_help_text(self, additional_see_also=None, plain=True):
2414
from bzrlib import help_topics
2415
result += help_topics._format_see_also(additional_see_also)
2417
result = help_topics.help_as_plain_text(result)
2421
# Predefined converters to get proper values from store
2423
def bool_from_store(unicode_str):
2424
return ui.bool_from_string(unicode_str)
2427
def int_from_store(unicode_str):
2428
return int(unicode_str)
2431
def float_from_store(unicode_str):
2432
return float(unicode_str)
2436
# Use a an empty dict to initialize an empty configobj avoiding all
2437
# parsing and encoding checks
2438
_list_converter_config = configobj.ConfigObj(
2439
{}, encoding='utf-8', list_values=True, interpolation=False)
2442
def list_from_store(unicode_str):
2443
if not isinstance(unicode_str, basestring):
2445
# Now inject our string directly as unicode. All callers got their value
2446
# from configobj, so values that need to be quoted are already properly
2448
_list_converter_config.reset()
2449
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2450
maybe_list = _list_converter_config['list']
2451
# ConfigObj return '' instead of u''. Use 'str' below to catch all cases.
2452
if isinstance(maybe_list, basestring):
2454
# A single value, most probably the user forgot (or didn't care to
2455
# add) the final ','
2458
# The empty string, convert to empty list
2461
# We rely on ConfigObj providing us with a list already
2466
class OptionRegistry(registry.Registry):
2467
"""Register config options by their name.
2469
This overrides ``registry.Registry`` to simplify registration by acquiring
2470
some information from the option object itself.
2473
def register(self, option):
2474
"""Register a new option to its name.
2476
:param option: The option to register. Its name is used as the key.
2478
super(OptionRegistry, self).register(option.name, option,
2481
def register_lazy(self, key, module_name, member_name):
2482
"""Register a new option to be loaded on request.
2484
:param key: the key to request the option later. Since the registration
2485
is lazy, it should be provided and match the option name.
2487
:param module_name: the python path to the module. Such as 'os.path'.
2489
:param member_name: the member of the module to return. If empty or
2490
None, get() will return the module itself.
2492
super(OptionRegistry, self).register_lazy(key,
2493
module_name, member_name)
2495
def get_help(self, key=None):
2496
"""Get the help text associated with the given key"""
2497
option = self.get(key)
2498
the_help = option.help
2499
if callable(the_help):
2500
return the_help(self, key)
2504
option_registry = OptionRegistry()
2507
# Registered options in lexicographical order
2509
option_registry.register(
2510
Option('bzr.workingtree.worth_saving_limit', default=10,
2511
from_unicode=int_from_store, invalid='warning',
2513
How many changes before saving the dirstate.
2515
-1 means that we will never rewrite the dirstate file for only
2516
stat-cache changes. Regardless of this setting, we will always rewrite
2517
the dirstate file if a file is added/removed/renamed/etc. This flag only
2518
affects the behavior of updating the dirstate file after we notice that
2519
a file has been touched.
2521
option_registry.register(
2522
Option('dirstate.fdatasync', default=True,
2523
from_unicode=bool_from_store,
2525
Flush dirstate changes onto physical disk?
2527
If true (default), working tree metadata changes are flushed through the
2528
OS buffers to physical disk. This is somewhat slower, but means data
2529
should not be lost if the machine crashes. See also repository.fdatasync.
2531
option_registry.register(
2532
Option('debug_flags', default=[], from_unicode=list_from_store,
2533
help='Debug flags to activate.'))
2534
option_registry.register(
2535
Option('default_format', default='2a',
2536
help='Format used when creating branches.'))
2537
option_registry.register(
2538
Option('dpush_strict', default=None,
2539
from_unicode=bool_from_store,
2541
The default value for ``dpush --strict``.
2543
If present, defines the ``--strict`` option default value for checking
2544
uncommitted changes before pushing into a different VCS without any
2545
custom bzr metadata.
2547
option_registry.register(
2549
help='The command called to launch an editor to enter a message.'))
2550
option_registry.register(
2551
Option('ignore_missing_extensions', default=False,
2552
from_unicode=bool_from_store,
2554
Control the missing extensions warning display.
2556
The warning will not be emitted if set to True.
2558
option_registry.register(
2560
help='Language to translate messages into.'))
2561
option_registry.register(
2562
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2564
Steal locks that appears to be dead.
2566
If set to True, bzr will check if a lock is supposed to be held by an
2567
active process from the same user on the same machine. If the user and
2568
machine match, but no process with the given PID is active, then bzr
2569
will automatically break the stale lock, and create a new lock for
2571
Otherwise, bzr will prompt as normal to break the lock.
2573
option_registry.register(
2574
Option('log_format', default='long',
2576
Log format to use when displaying revisions.
2578
Standard log formats are ``long``, ``short`` and ``line``. Additional formats
2579
may be provided by plugins.
2581
option_registry.register(
2582
Option('output_encoding',
2583
help= 'Unicode encoding for output'
2584
' (terminal encoding if not specified).'))
2585
option_registry.register(
2586
Option('push_strict', default=None,
2587
from_unicode=bool_from_store,
2589
The default value for ``push --strict``.
2591
If present, defines the ``--strict`` option default value for checking
2592
uncommitted changes before sending a merge directive.
2594
option_registry.register(
2595
Option('repository.fdatasync', default=True,
2596
from_unicode=bool_from_store,
2598
Flush repository changes onto physical disk?
2600
If true (default), repository changes are flushed through the OS buffers
2601
to physical disk. This is somewhat slower, but means data should not be
2602
lost if the machine crashes. See also dirstate.fdatasync.
2604
option_registry.register(
2605
Option('send_strict', default=None,
2606
from_unicode=bool_from_store,
2608
The default value for ``send --strict``.
2610
If present, defines the ``--strict`` option default value for checking
2611
uncommitted changes before pushing.
2614
option_registry.register(
2615
Option('serve.client_timeout',
2616
default=300.0, from_unicode=float_from_store,
2617
help="If we wait for a new request from a client for more than"
2618
" X seconds, consider the client idle, and hangup."))
2621
class Section(object):
2622
"""A section defines a dict of option name => value.
2624
This is merely a read-only dict which can add some knowledge about the
2625
options. It is *not* a python dict object though and doesn't try to mimic
2629
def __init__(self, section_id, options):
2630
self.id = section_id
2631
# We re-use the dict-like object received
2632
self.options = options
2634
def get(self, name, default=None):
2635
return self.options.get(name, default)
2638
# Mostly for debugging use
2639
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2642
_NewlyCreatedOption = object()
2643
"""Was the option created during the MutableSection lifetime"""
2646
class MutableSection(Section):
2647
"""A section allowing changes and keeping track of the original values."""
2649
def __init__(self, section_id, options):
2650
super(MutableSection, self).__init__(section_id, options)
2653
def set(self, name, value):
2654
if name not in self.options:
2655
# This is a new option
2656
self.orig[name] = _NewlyCreatedOption
2657
elif name not in self.orig:
2658
self.orig[name] = self.get(name, None)
2659
self.options[name] = value
2661
def remove(self, name):
2662
if name not in self.orig:
2663
self.orig[name] = self.get(name, None)
2664
del self.options[name]
2667
class CommandLineSection(MutableSection):
2668
"""A section used to carry command line overrides for the config options."""
2670
def __init__(self, opts=None):
2673
super(CommandLineSection, self).__init__('cmdline-overrides', opts)
2676
# The dict should be cleared but not replaced so it can be shared.
2677
self.options.clear()
2679
def _from_cmdline(self, overrides):
2680
# Reset before accepting new definitions
2682
for over in overrides:
2684
name, value = over.split('=', 1)
2686
raise errors.BzrCommandError(
2687
gettext("Invalid '%s', should be of the form 'name=value'")
2689
self.set(name, value)
2692
class Store(object):
2693
"""Abstract interface to persistent storage for configuration options."""
2695
readonly_section_class = Section
2696
mutable_section_class = MutableSection
2698
def is_loaded(self):
2699
"""Returns True if the Store has been loaded.
2701
This is used to implement lazy loading and ensure the persistent
2702
storage is queried only when needed.
2704
raise NotImplementedError(self.is_loaded)
2707
"""Loads the Store from persistent storage."""
2708
raise NotImplementedError(self.load)
2710
def _load_from_string(self, bytes):
2711
"""Create a store from a string in configobj syntax.
2713
:param bytes: A string representing the file content.
2715
raise NotImplementedError(self._load_from_string)
2718
"""Unloads the Store.
2720
This should make is_loaded() return False. This is used when the caller
2721
knows that the persistent storage has changed or may have change since
2724
raise NotImplementedError(self.unload)
2727
"""Saves the Store to persistent storage."""
2728
raise NotImplementedError(self.save)
2730
def external_url(self):
2731
raise NotImplementedError(self.external_url)
2733
def get_sections(self):
2734
"""Returns an ordered iterable of existing sections.
2736
:returns: An iterable of (name, dict).
2738
raise NotImplementedError(self.get_sections)
2740
def get_mutable_section(self, section_name=None):
2741
"""Returns the specified mutable section.
2743
:param section_name: The section identifier
2745
raise NotImplementedError(self.get_mutable_section)
2748
# Mostly for debugging use
2749
return "<config.%s(%s)>" % (self.__class__.__name__,
2750
self.external_url())
2753
class IniFileStore(Store):
2754
"""A config Store using ConfigObj for storage.
2756
:ivar transport: The transport object where the config file is located.
2758
:ivar file_name: The config file basename in the transport directory.
2760
:ivar _config_obj: Private member to hold the ConfigObj instance used to
2761
serialize/deserialize the config file.
2764
def __init__(self, transport, file_name):
2765
"""A config Store using ConfigObj for storage.
2767
:param transport: The transport object where the config file is located.
2769
:param file_name: The config file basename in the transport directory.
2771
super(IniFileStore, self).__init__()
2772
self.transport = transport
2773
self.file_name = file_name
2774
self._config_obj = None
2776
def is_loaded(self):
2777
return self._config_obj != None
2780
self._config_obj = None
2783
"""Load the store from the associated file."""
2784
if self.is_loaded():
2787
content = self.transport.get_bytes(self.file_name)
2788
except errors.PermissionDenied:
2789
trace.warning("Permission denied while trying to load "
2790
"configuration store %s.", self.external_url())
2792
self._load_from_string(content)
2793
for hook in ConfigHooks['load']:
2796
def _load_from_string(self, bytes):
2797
"""Create a config store from a string.
2799
:param bytes: A string representing the file content.
2801
if self.is_loaded():
2802
raise AssertionError('Already loaded: %r' % (self._config_obj,))
2803
co_input = StringIO(bytes)
2805
# The config files are always stored utf8-encoded
2806
self._config_obj = ConfigObj(co_input, encoding='utf-8',
2808
except configobj.ConfigObjError, e:
2809
self._config_obj = None
2810
raise errors.ParseConfigError(e.errors, self.external_url())
2811
except UnicodeDecodeError:
2812
raise errors.ConfigContentError(self.external_url())
2815
if not self.is_loaded():
2819
self._config_obj.write(out)
2820
self.transport.put_bytes(self.file_name, out.getvalue())
2821
for hook in ConfigHooks['save']:
2824
def external_url(self):
2825
# FIXME: external_url should really accepts an optional relpath
2826
# parameter (bug #750169) :-/ -- vila 2011-04-04
2827
# The following will do in the interim but maybe we don't want to
2828
# expose a path here but rather a config ID and its associated
2829
# object </hand wawe>.
2830
return urlutils.join(self.transport.external_url(), self.file_name)
2832
def get_sections(self):
2833
"""Get the configobj section in the file order.
2835
:returns: An iterable of (name, dict).
2837
# We need a loaded store
2840
except (errors.NoSuchFile, errors.PermissionDenied):
2841
# If the file can't be read, there is no sections
2843
cobj = self._config_obj
2845
yield self.readonly_section_class(None, cobj)
2846
for section_name in cobj.sections:
2847
yield self.readonly_section_class(section_name, cobj[section_name])
2849
def get_mutable_section(self, section_name=None):
2850
# We need a loaded store
2853
except errors.NoSuchFile:
2854
# The file doesn't exist, let's pretend it was empty
2855
self._load_from_string('')
2856
if section_name is None:
2857
section = self._config_obj
2859
section = self._config_obj.setdefault(section_name, {})
2860
return self.mutable_section_class(section_name, section)
2863
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
2864
# unlockable stores for use with objects that can already ensure the locking
2865
# (think branches). If different stores (not based on ConfigObj) are created,
2866
# they may face the same issue.
2869
class LockableIniFileStore(IniFileStore):
2870
"""A ConfigObjStore using locks on save to ensure store integrity."""
2872
def __init__(self, transport, file_name, lock_dir_name=None):
2873
"""A config Store using ConfigObj for storage.
2875
:param transport: The transport object where the config file is located.
2877
:param file_name: The config file basename in the transport directory.
2879
if lock_dir_name is None:
2880
lock_dir_name = 'lock'
2881
self.lock_dir_name = lock_dir_name
2882
super(LockableIniFileStore, self).__init__(transport, file_name)
2883
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
2885
def lock_write(self, token=None):
2886
"""Takes a write lock in the directory containing the config file.
2888
If the directory doesn't exist it is created.
2890
# FIXME: This doesn't check the ownership of the created directories as
2891
# ensure_config_dir_exists does. It should if the transport is local
2892
# -- vila 2011-04-06
2893
self.transport.create_prefix()
2894
return self._lock.lock_write(token)
2899
def break_lock(self):
2900
self._lock.break_lock()
2904
# We need to be able to override the undecorated implementation
2905
self.save_without_locking()
2907
def save_without_locking(self):
2908
super(LockableIniFileStore, self).save()
2911
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
2912
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
2913
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
2915
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
2916
# functions or a registry will make it easier and clearer for tests, focusing
2917
# on the relevant parts of the API that needs testing -- vila 20110503 (based
2918
# on a poolie's remark)
2919
class GlobalStore(LockableIniFileStore):
2921
def __init__(self, possible_transports=None):
2922
t = transport.get_transport_from_path(
2923
config_dir(), possible_transports=possible_transports)
2924
super(GlobalStore, self).__init__(t, 'bazaar.conf')
2927
class LocationStore(LockableIniFileStore):
2929
def __init__(self, possible_transports=None):
2930
t = transport.get_transport_from_path(
2931
config_dir(), possible_transports=possible_transports)
2932
super(LocationStore, self).__init__(t, 'locations.conf')
2935
class BranchStore(IniFileStore):
2937
def __init__(self, branch):
2938
super(BranchStore, self).__init__(branch.control_transport,
2940
self.branch = branch
2942
def lock_write(self, token=None):
2943
return self.branch.lock_write(token)
2946
return self.branch.unlock()
2950
# We need to be able to override the undecorated implementation
2951
self.save_without_locking()
2953
def save_without_locking(self):
2954
super(BranchStore, self).save()
2957
class ControlStore(LockableIniFileStore):
2959
def __init__(self, bzrdir):
2960
super(ControlStore, self).__init__(bzrdir.transport,
2962
lock_dir_name='branch_lock')
2965
class SectionMatcher(object):
2966
"""Select sections into a given Store.
2968
This is intended to be used to postpone getting an iterable of sections
2972
def __init__(self, store):
2975
def get_sections(self):
2976
# This is where we require loading the store so we can see all defined
2978
sections = self.store.get_sections()
2979
# Walk the revisions in the order provided
2984
def match(self, section):
2985
"""Does the proposed section match.
2987
:param section: A Section object.
2989
:returns: True if the section matches, False otherwise.
2991
raise NotImplementedError(self.match)
2994
class NameMatcher(SectionMatcher):
2996
def __init__(self, store, section_id):
2997
super(NameMatcher, self).__init__(store)
2998
self.section_id = section_id
3000
def match(self, section):
3001
return section.id == self.section_id
3004
class LocationSection(Section):
3006
def __init__(self, section, length, extra_path):
3007
super(LocationSection, self).__init__(section.id, section.options)
3008
self.length = length
3009
self.extra_path = extra_path
3011
def get(self, name, default=None):
3012
value = super(LocationSection, self).get(name, default)
3013
if value is not None:
3014
policy_name = self.get(name + ':policy', None)
3015
policy = _policy_value.get(policy_name, POLICY_NONE)
3016
if policy == POLICY_APPENDPATH:
3017
value = urlutils.join(value, self.extra_path)
3021
class LocationMatcher(SectionMatcher):
3023
def __init__(self, store, location):
3024
super(LocationMatcher, self).__init__(store)
3025
if location.startswith('file://'):
3026
location = urlutils.local_path_from_url(location)
3027
self.location = location
3029
def _get_matching_sections(self):
3030
"""Get all sections matching ``location``."""
3031
# We slightly diverge from LocalConfig here by allowing the no-name
3032
# section as the most generic one and the lower priority.
3033
no_name_section = None
3035
# Filter out the no_name_section so _iter_for_location_by_parts can be
3036
# used (it assumes all sections have a name).
3037
for section in self.store.get_sections():
3038
if section.id is None:
3039
no_name_section = section
3041
all_sections.append(section)
3042
# Unfortunately _iter_for_location_by_parts deals with section names so
3043
# we have to resync.
3044
filtered_sections = _iter_for_location_by_parts(
3045
[s.id for s in all_sections], self.location)
3046
iter_all_sections = iter(all_sections)
3047
matching_sections = []
3048
if no_name_section is not None:
3049
matching_sections.append(
3050
LocationSection(no_name_section, 0, self.location))
3051
for section_id, extra_path, length in filtered_sections:
3052
# a section id is unique for a given store so it's safe to take the
3053
# first matching section while iterating. Also, all filtered
3054
# sections are part of 'all_sections' and will always be found
3057
section = iter_all_sections.next()
3058
if section_id == section.id:
3059
matching_sections.append(
3060
LocationSection(section, length, extra_path))
3062
return matching_sections
3064
def get_sections(self):
3065
# Override the default implementation as we want to change the order
3066
matching_sections = self._get_matching_sections()
3067
# We want the longest (aka more specific) locations first
3068
sections = sorted(matching_sections,
3069
key=lambda section: (section.length, section.id),
3071
# Sections mentioning 'ignore_parents' restrict the selection
3072
for section in sections:
3073
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3074
ignore = section.get('ignore_parents', None)
3075
if ignore is not None:
3076
ignore = ui.bool_from_string(ignore)
3079
# Finally, we have a valid section
3083
class Stack(object):
3084
"""A stack of configurations where an option can be defined"""
3086
_option_ref_re = lazy_regex.lazy_compile('({[^{}]+})')
3087
"""Describes an exandable option reference.
3089
We want to match the most embedded reference first.
3091
I.e. for '{{foo}}' we will get '{foo}',
3092
for '{bar{baz}}' we will get '{baz}'
3095
def __init__(self, sections_def, store=None, mutable_section_name=None):
3096
"""Creates a stack of sections with an optional store for changes.
3098
:param sections_def: A list of Section or callables that returns an
3099
iterable of Section. This defines the Sections for the Stack and
3100
can be called repeatedly if needed.
3102
:param store: The optional Store where modifications will be
3103
recorded. If none is specified, no modifications can be done.
3105
:param mutable_section_name: The name of the MutableSection where
3106
changes are recorded. This requires the ``store`` parameter to be
3109
self.sections_def = sections_def
3111
self.mutable_section_name = mutable_section_name
3113
def get(self, name, expand=None):
3114
"""Return the *first* option value found in the sections.
3116
This is where we guarantee that sections coming from Store are loaded
3117
lazily: the loading is delayed until we need to either check that an
3118
option exists or get its value, which in turn may require to discover
3119
in which sections it can be defined. Both of these (section and option
3120
existence) require loading the store (even partially).
3122
:param name: The queried option.
3124
:param expand: Whether options references should be expanded.
3126
:returns: The value of the option.
3128
# FIXME: No caching of options nor sections yet -- vila 20110503
3130
expand = _get_expand_default_value()
3132
# Ensuring lazy loading is achieved by delaying section matching (which
3133
# implies querying the persistent storage) until it can't be avoided
3134
# anymore by using callables to describe (possibly empty) section
3136
for section_or_callable in self.sections_def:
3137
# Each section can expand to multiple ones when a callable is used
3138
if callable(section_or_callable):
3139
sections = section_or_callable()
3141
sections = [section_or_callable]
3142
for section in sections:
3143
value = section.get(name)
3144
if value is not None:
3146
if value is not None:
3148
# If the option is registered, it may provide additional info about
3151
opt = option_registry.get(name)
3155
def expand_and_convert(val):
3156
# This may need to be called twice if the value is None or ends up
3157
# being None during expansion or conversion.
3160
if isinstance(val, basestring):
3161
val = self._expand_options_in_string(val)
3163
trace.warning('Cannot expand "%s":'
3164
' %s does not support option expansion'
3165
% (name, type(val)))
3167
val = opt.convert_from_unicode(val)
3169
value = expand_and_convert(value)
3170
if opt is not None and value is None:
3171
# If the option is registered, it may provide a default value
3172
value = opt.get_default()
3173
value = expand_and_convert(value)
3174
for hook in ConfigHooks['get']:
3175
hook(self, name, value)
3178
def expand_options(self, string, env=None):
3179
"""Expand option references in the string in the configuration context.
3181
:param string: The string containing option(s) to expand.
3183
:param env: An option dict defining additional configuration options or
3184
overriding existing ones.
3186
:returns: The expanded string.
3188
return self._expand_options_in_string(string, env)
3190
def _expand_options_in_string(self, string, env=None, _refs=None):
3191
"""Expand options in the string in the configuration context.
3193
:param string: The string to be expanded.
3195
:param env: An option dict defining additional configuration options or
3196
overriding existing ones.
3198
:param _refs: Private list (FIFO) containing the options being expanded
3201
:returns: The expanded string.
3204
# Not much to expand there
3207
# What references are currently resolved (to detect loops)
3210
# We need to iterate until no more refs appear ({{foo}} will need two
3211
# iterations for example).
3213
raw_chunks = Stack._option_ref_re.split(result)
3214
if len(raw_chunks) == 1:
3215
# Shorcut the trivial case: no refs
3218
# Split will isolate refs so that every other chunk is a ref
3219
chunk_is_ref = False
3220
for chunk in raw_chunks:
3221
if not chunk_is_ref:
3222
chunks.append(chunk)
3227
raise errors.OptionExpansionLoop(string, _refs)
3229
value = self._expand_option(name, env, _refs)
3231
raise errors.ExpandingUnknownOption(name, string)
3232
chunks.append(value)
3234
chunk_is_ref = False
3235
result = ''.join(chunks)
3238
def _expand_option(self, name, env, _refs):
3239
if env is not None and name in env:
3240
# Special case, values provided in env takes precedence over
3244
# FIXME: This is a limited implementation, what we really need is a
3245
# way to query the bzr config for the value of an option,
3246
# respecting the scope rules (That is, once we implement fallback
3247
# configs, getting the option value should restart from the top
3248
# config, not the current one) -- vila 20101222
3249
value = self.get(name, expand=False)
3250
value = self._expand_options_in_string(value, env, _refs)
3253
def _get_mutable_section(self):
3254
"""Get the MutableSection for the Stack.
3256
This is where we guarantee that the mutable section is lazily loaded:
3257
this means we won't load the corresponding store before setting a value
3258
or deleting an option. In practice the store will often be loaded but
3259
this allows helps catching some programming errors.
3261
section = self.store.get_mutable_section(self.mutable_section_name)
3264
def set(self, name, value):
3265
"""Set a new value for the option."""
3266
section = self._get_mutable_section()
3267
section.set(name, value)
3268
for hook in ConfigHooks['set']:
3269
hook(self, name, value)
3271
def remove(self, name):
3272
"""Remove an existing option."""
3273
section = self._get_mutable_section()
3274
section.remove(name)
3275
for hook in ConfigHooks['remove']:
3279
# Mostly for debugging use
3280
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3283
class _CompatibleStack(Stack):
3284
"""Place holder for compatibility with previous design.
3286
This is intended to ease the transition from the Config-based design to the
3287
Stack-based design and should not be used nor relied upon by plugins.
3289
One assumption made here is that the daughter classes will all use Stores
3290
derived from LockableIniFileStore).
3292
It implements set() by re-loading the store before applying the
3293
modification and saving it.
3295
The long term plan being to implement a single write by store to save
3296
all modifications, this class should not be used in the interim.
3299
def set(self, name, value):
3302
super(_CompatibleStack, self).set(name, value)
3303
# Force a write to persistent storage
3307
class GlobalStack(_CompatibleStack):
3308
"""Global options only stack."""
3312
gstore = GlobalStore()
3313
super(GlobalStack, self).__init__(
3314
[bzrlib.global_state.cmdline_overrides, gstore.get_sections],
3318
class LocationStack(_CompatibleStack):
3319
"""Per-location options falling back to global options stack."""
3321
def __init__(self, location):
3322
"""Make a new stack for a location and global configuration.
3324
:param location: A URL prefix to """
3325
lstore = LocationStore()
3326
matcher = LocationMatcher(lstore, location)
3327
gstore = GlobalStore()
3328
super(LocationStack, self).__init__(
3329
[bzrlib.global_state.cmdline_overrides,
3330
matcher.get_sections, gstore.get_sections],
3334
class BranchStack(_CompatibleStack):
3335
"""Per-location options falling back to branch then global options stack."""
3337
def __init__(self, branch):
3338
bstore = BranchStore(branch)
3339
lstore = LocationStore()
3340
matcher = LocationMatcher(lstore, branch.base)
3341
gstore = GlobalStore()
3342
super(BranchStack, self).__init__(
3343
[bzrlib.global_state.cmdline_overrides,
3344
matcher.get_sections, bstore.get_sections, gstore.get_sections],
3346
self.branch = branch
3349
class RemoteControlStack(_CompatibleStack):
3350
"""Remote control-only options stack."""
3352
def __init__(self, bzrdir):
3353
cstore = ControlStore(bzrdir)
3354
super(RemoteControlStack, self).__init__(
3355
[cstore.get_sections],
3357
self.bzrdir = bzrdir
3360
class RemoteBranchStack(_CompatibleStack):
3361
"""Remote branch-only options stack."""
3363
def __init__(self, branch):
3364
bstore = BranchStore(branch)
3365
super(RemoteBranchStack, self).__init__(
3366
[bstore.get_sections],
3368
self.branch = branch
3371
class cmd_config(commands.Command):
3372
__doc__ = """Display, set or remove a configuration option.
3374
Display the active value for a given option.
3376
If --all is specified, NAME is interpreted as a regular expression and all
3377
matching options are displayed mentioning their scope. The active value
3378
that bzr will take into account is the first one displayed for each option.
3380
If no NAME is given, --all .* is implied.
3382
Setting a value is achieved by using name=value without spaces. The value
3383
is set in the most relevant scope and can be checked by displaying the
3387
takes_args = ['name?']
3391
# FIXME: This should be a registry option so that plugins can register
3392
# their own config files (or not) -- vila 20101002
3393
commands.Option('scope', help='Reduce the scope to the specified'
3394
' configuration file',
3396
commands.Option('all',
3397
help='Display all the defined values for the matching options.',
3399
commands.Option('remove', help='Remove the option from'
3400
' the configuration file'),
3403
_see_also = ['configuration']
3405
@commands.display_command
3406
def run(self, name=None, all=False, directory=None, scope=None,
3408
if directory is None:
3410
directory = urlutils.normalize_url(directory)
3412
raise errors.BzrError(
3413
'--all and --remove are mutually exclusive.')
3415
# Delete the option in the given scope
3416
self._remove_config_option(name, directory, scope)
3418
# Defaults to all options
3419
self._show_matching_options('.*', directory, scope)
3422
name, value = name.split('=', 1)
3424
# Display the option(s) value(s)
3426
self._show_matching_options(name, directory, scope)
3428
self._show_value(name, directory, scope)
3431
raise errors.BzrError(
3432
'Only one option can be set.')
3433
# Set the option value
3434
self._set_config_option(name, value, directory, scope)
3436
def _get_configs(self, directory, scope=None):
3437
"""Iterate the configurations specified by ``directory`` and ``scope``.
3439
:param directory: Where the configurations are derived from.
3441
:param scope: A specific config to start from.
3443
if scope is not None:
3444
if scope == 'bazaar':
3445
yield GlobalConfig()
3446
elif scope == 'locations':
3447
yield LocationConfig(directory)
3448
elif scope == 'branch':
3449
(_, br, _) = bzrdir.BzrDir.open_containing_tree_or_branch(
3451
yield br.get_config()
3454
(_, br, _) = bzrdir.BzrDir.open_containing_tree_or_branch(
3456
yield br.get_config()
3457
except errors.NotBranchError:
3458
yield LocationConfig(directory)
3459
yield GlobalConfig()
3461
def _show_value(self, name, directory, scope):
3463
for c in self._get_configs(directory, scope):
3466
for (oname, value, section, conf_id, parser) in c._get_options():
3468
# Display only the first value and exit
3470
# FIXME: We need to use get_user_option to take policies
3471
# into account and we need to make sure the option exists
3472
# too (hence the two for loops), this needs a better API
3474
value = c.get_user_option(name)
3475
# Quote the value appropriately
3476
value = parser._quote(value)
3477
self.outf.write('%s\n' % (value,))
3481
raise errors.NoSuchConfigOption(name)
3483
def _show_matching_options(self, name, directory, scope):
3484
name = lazy_regex.lazy_compile(name)
3485
# We want any error in the regexp to be raised *now* so we need to
3486
# avoid the delay introduced by the lazy regexp. But, we still do
3487
# want the nicer errors raised by lazy_regex.
3488
name._compile_and_collapse()
3491
for c in self._get_configs(directory, scope):
3492
for (oname, value, section, conf_id, parser) in c._get_options():
3493
if name.search(oname):
3494
if cur_conf_id != conf_id:
3495
# Explain where the options are defined
3496
self.outf.write('%s:\n' % (conf_id,))
3497
cur_conf_id = conf_id
3499
if (section not in (None, 'DEFAULT')
3500
and cur_section != section):
3501
# Display the section if it's not the default (or only)
3503
self.outf.write(' [%s]\n' % (section,))
3504
cur_section = section
3505
self.outf.write(' %s = %s\n' % (oname, value))
3507
def _set_config_option(self, name, value, directory, scope):
3508
for conf in self._get_configs(directory, scope):
3509
conf.set_user_option(name, value)
3512
raise errors.NoSuchConfig(scope)
3514
def _remove_config_option(self, name, directory, scope):
3516
raise errors.BzrCommandError(
3517
'--remove expects an option to remove.')
3519
for conf in self._get_configs(directory, scope):
3520
for (section_name, section, conf_id) in conf._get_sections():
3521
if scope is not None and conf_id != scope:
3522
# Not the right configuration file
3525
if conf_id != conf.config_id():
3526
conf = self._get_configs(directory, conf_id).next()
3527
# We use the first section in the first config where the
3528
# option is defined to remove it
3529
conf.remove_user_option(name, section_name)
3534
raise errors.NoSuchConfig(scope)
3536
raise errors.NoSuchConfigOption(name)
3540
# We need adapters that can build a Store or a Stack in a test context. Test
3541
# classes, based on TestCaseWithTransport, can use the registry to parametrize
3542
# themselves. The builder will receive a test instance and should return a
3543
# ready-to-use store or stack. Plugins that define new store/stacks can also
3544
# register themselves here to be tested against the tests defined in
3545
# bzrlib.tests.test_config. Note that the builder can be called multiple times
3546
# for the same tests.
3548
# The registered object should be a callable receiving a test instance
3549
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
3551
test_store_builder_registry = registry.Registry()
3553
# The registered object should be a callable receiving a test instance
3554
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
3556
test_stack_builder_registry = registry.Registry()