1578
2256
configobj[name] = value
1580
2258
configobj.setdefault(section, {})[name] = value
2259
for hook in OldConfigHooks['set']:
2260
hook(self, name, value)
2261
self._set_configobj(configobj)
2263
def remove_option(self, option_name, section_name=None):
2264
configobj = self._get_configobj()
2265
if section_name is None:
2266
del configobj[option_name]
2268
del configobj[section_name][option_name]
2269
for hook in OldConfigHooks['remove']:
2270
hook(self, option_name)
1581
2271
self._set_configobj(configobj)
1583
2273
def _get_config_file(self):
1585
return StringIO(self._transport.get_bytes(self._filename))
2275
f = StringIO(self._transport.get_bytes(self._filename))
2276
for hook in OldConfigHooks['load']:
1586
2279
except errors.NoSuchFile:
1587
2280
return StringIO()
2281
except errors.PermissionDenied, e:
2282
trace.warning("Permission denied while trying to open "
2283
"configuration file %s.", urlutils.unescape_for_display(
2284
urlutils.join(self._transport.base, self._filename), "utf-8"))
2287
def _external_url(self):
2288
return urlutils.join(self._transport.external_url(), self._filename)
1589
2290
def _get_configobj(self):
1590
2291
f = self._get_config_file()
1592
return ConfigObj(f, encoding='utf-8')
2294
conf = ConfigObj(f, encoding='utf-8')
2295
except configobj.ConfigObjError, e:
2296
raise errors.ParseConfigError(e.errors, self._external_url())
2297
except UnicodeDecodeError:
2298
raise errors.ConfigContentError(self._external_url())
1596
2303
def _set_configobj(self, configobj):
1597
2304
out_file = StringIO()
1598
2305
configobj.write(out_file)
1599
2306
out_file.seek(0)
1600
2307
self._transport.put_file(self._filename, out_file)
2308
for hook in OldConfigHooks['save']:
2312
class Option(object):
2313
"""An option definition.
2315
The option *values* are stored in config files and found in sections.
2317
Here we define various properties about the option itself, its default
2318
value, how to convert it from stores, what to do when invalid values are
2319
encoutered, in which config files it can be stored.
2322
def __init__(self, name, default=None, default_from_env=None,
2324
from_unicode=None, invalid=None):
2325
"""Build an option definition.
2327
:param name: the name used to refer to the option.
2329
:param default: the default value to use when none exist in the config
2330
stores. This is either a string that ``from_unicode`` will convert
2331
into the proper type or a python object that can be stringified (so
2332
only the empty list is supported for example).
2334
:param default_from_env: A list of environment variables which can
2335
provide a default value. 'default' will be used only if none of the
2336
variables specified here are set in the environment.
2338
:param help: a doc string to explain the option to the user.
2340
:param from_unicode: a callable to convert the unicode string
2341
representing the option value in a store. This is not called for
2344
:param invalid: the action to be taken when an invalid value is
2345
encountered in a store. This is called only when from_unicode is
2346
invoked to convert a string and returns None or raise ValueError or
2347
TypeError. Accepted values are: None (ignore invalid values),
2348
'warning' (emit a warning), 'error' (emit an error message and
2351
if default_from_env is None:
2352
default_from_env = []
2354
# Convert the default value to a unicode string so all values are
2355
# strings internally before conversion (via from_unicode) is attempted.
2358
elif isinstance(default, list):
2359
# Only the empty list is supported
2361
raise AssertionError(
2362
'Only empty lists are supported as default values')
2364
elif isinstance(default, (str, unicode, bool, int)):
2365
# Rely on python to convert strings, booleans and integers
2366
self.default = u'%s' % (default,)
2368
# other python objects are not expected
2369
raise AssertionError('%r is not supported as a default value'
2371
self.default_from_env = default_from_env
2373
self.from_unicode = from_unicode
2374
if invalid and invalid not in ('warning', 'error'):
2375
raise AssertionError("%s not supported for 'invalid'" % (invalid,))
2376
self.invalid = invalid
2378
def convert_from_unicode(self, unicode_value):
2379
if self.from_unicode is None or unicode_value is None:
2380
# Don't convert or nothing to convert
2381
return unicode_value
2383
converted = self.from_unicode(unicode_value)
2384
except (ValueError, TypeError):
2385
# Invalid values are ignored
2387
if converted is None and self.invalid is not None:
2388
# The conversion failed
2389
if self.invalid == 'warning':
2390
trace.warning('Value "%s" is not valid for "%s"',
2391
unicode_value, self.name)
2392
elif self.invalid == 'error':
2393
raise errors.ConfigOptionValueError(self.name, unicode_value)
2396
def get_default(self):
2398
for var in self.default_from_env:
2400
# If the env variable is defined, its value is the default one
2401
value = os.environ[var]
2406
# Otherwise, fallback to the value defined at registration
2407
value = self.default
2410
def get_help_text(self, additional_see_also=None, plain=True):
2412
from bzrlib import help_topics
2413
result += help_topics._format_see_also(additional_see_also)
2415
result = help_topics.help_as_plain_text(result)
2419
# Predefined converters to get proper values from store
2421
def bool_from_store(unicode_str):
2422
return ui.bool_from_string(unicode_str)
2425
def int_from_store(unicode_str):
2426
return int(unicode_str)
2429
# Use a an empty dict to initialize an empty configobj avoiding all
2430
# parsing and encoding checks
2431
_list_converter_config = configobj.ConfigObj(
2432
{}, encoding='utf-8', list_values=True, interpolation=False)
2435
def list_from_store(unicode_str):
2436
if not isinstance(unicode_str, basestring):
2438
# Now inject our string directly as unicode. All callers got their value
2439
# from configobj, so values that need to be quoted are already properly
2441
_list_converter_config.reset()
2442
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2443
maybe_list = _list_converter_config['list']
2444
# ConfigObj return '' instead of u''. Use 'str' below to catch all cases.
2445
if isinstance(maybe_list, basestring):
2447
# A single value, most probably the user forgot (or didn't care to
2448
# add) the final ','
2451
# The empty string, convert to empty list
2454
# We rely on ConfigObj providing us with a list already
2459
class OptionRegistry(registry.Registry):
2460
"""Register config options by their name.
2462
This overrides ``registry.Registry`` to simplify registration by acquiring
2463
some information from the option object itself.
2466
def register(self, option):
2467
"""Register a new option to its name.
2469
:param option: The option to register. Its name is used as the key.
2471
super(OptionRegistry, self).register(option.name, option,
2474
def register_lazy(self, key, module_name, member_name):
2475
"""Register a new option to be loaded on request.
2477
:param key: the key to request the option later. Since the registration
2478
is lazy, it should be provided and match the option name.
2480
:param module_name: the python path to the module. Such as 'os.path'.
2482
:param member_name: the member of the module to return. If empty or
2483
None, get() will return the module itself.
2485
super(OptionRegistry, self).register_lazy(key,
2486
module_name, member_name)
2488
def get_help(self, key=None):
2489
"""Get the help text associated with the given key"""
2490
option = self.get(key)
2491
the_help = option.help
2492
if callable(the_help):
2493
return the_help(self, key)
2497
option_registry = OptionRegistry()
2500
# Registered options in lexicographical order
2502
option_registry.register(
2503
Option('bzr.workingtree.worth_saving_limit', default=10,
2504
from_unicode=int_from_store, invalid='warning',
2506
How many changes before saving the dirstate.
2508
-1 means that we will never rewrite the dirstate file for only
2509
stat-cache changes. Regardless of this setting, we will always rewrite
2510
the dirstate file if a file is added/removed/renamed/etc. This flag only
2511
affects the behavior of updating the dirstate file after we notice that
2512
a file has been touched.
2514
option_registry.register(
2515
Option('dirstate.fdatasync', default=True,
2516
from_unicode=bool_from_store,
2518
Flush dirstate changes onto physical disk?
2520
If true (default), working tree metadata changes are flushed through the
2521
OS buffers to physical disk. This is somewhat slower, but means data
2522
should not be lost if the machine crashes. See also repository.fdatasync.
2524
option_registry.register(
2525
Option('debug_flags', default=[], from_unicode=list_from_store,
2526
help='Debug flags to activate.'))
2527
option_registry.register(
2528
Option('default_format', default='2a',
2529
help='Format used when creating branches.'))
2530
option_registry.register(
2531
Option('dpush_strict', default=None,
2532
from_unicode=bool_from_store,
2534
The default value for ``dpush --strict``.
2536
If present, defines the ``--strict`` option default value for checking
2537
uncommitted changes before pushing into a different VCS without any
2538
custom bzr metadata.
2540
option_registry.register(
2542
help='The command called to launch an editor to enter a message.'))
2543
option_registry.register(
2544
Option('ignore_missing_extensions', default=False,
2545
from_unicode=bool_from_store,
2547
Control the missing extensions warning display.
2549
The warning will not be emitted if set to True.
2551
option_registry.register(
2553
help='Language to translate messages into.'))
2554
option_registry.register(
2555
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2557
Steal locks that appears to be dead.
2559
If set to True, bzr will check if a lock is supposed to be held by an
2560
active process from the same user on the same machine. If the user and
2561
machine match, but no process with the given PID is active, then bzr
2562
will automatically break the stale lock, and create a new lock for
2564
Otherwise, bzr will prompt as normal to break the lock.
2566
option_registry.register(
2567
Option('output_encoding',
2568
help= 'Unicode encoding for output'
2569
' (terminal encoding if not specified).'))
2570
option_registry.register(
2571
Option('push_strict', default=None,
2572
from_unicode=bool_from_store,
2574
The default value for ``push --strict``.
2576
If present, defines the ``--strict`` option default value for checking
2577
uncommitted changes before sending a merge directive.
2579
option_registry.register(
2580
Option('repository.fdatasync', default=True,
2581
from_unicode=bool_from_store,
2583
Flush repository changes onto physical disk?
2585
If true (default), repository changes are flushed through the OS buffers
2586
to physical disk. This is somewhat slower, but means data should not be
2587
lost if the machine crashes. See also dirstate.fdatasync.
2589
option_registry.register(
2590
Option('send_strict', default=None,
2591
from_unicode=bool_from_store,
2593
The default value for ``send --strict``.
2595
If present, defines the ``--strict`` option default value for checking
2596
uncommitted changes before pushing.
2600
class Section(object):
2601
"""A section defines a dict of option name => value.
2603
This is merely a read-only dict which can add some knowledge about the
2604
options. It is *not* a python dict object though and doesn't try to mimic
2608
def __init__(self, section_id, options):
2609
self.id = section_id
2610
# We re-use the dict-like object received
2611
self.options = options
2613
def get(self, name, default=None):
2614
return self.options.get(name, default)
2617
# Mostly for debugging use
2618
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2621
_NewlyCreatedOption = object()
2622
"""Was the option created during the MutableSection lifetime"""
2625
class MutableSection(Section):
2626
"""A section allowing changes and keeping track of the original values."""
2628
def __init__(self, section_id, options):
2629
super(MutableSection, self).__init__(section_id, options)
2632
def set(self, name, value):
2633
if name not in self.options:
2634
# This is a new option
2635
self.orig[name] = _NewlyCreatedOption
2636
elif name not in self.orig:
2637
self.orig[name] = self.get(name, None)
2638
self.options[name] = value
2640
def remove(self, name):
2641
if name not in self.orig:
2642
self.orig[name] = self.get(name, None)
2643
del self.options[name]
2646
class Store(object):
2647
"""Abstract interface to persistent storage for configuration options."""
2649
readonly_section_class = Section
2650
mutable_section_class = MutableSection
2652
def is_loaded(self):
2653
"""Returns True if the Store has been loaded.
2655
This is used to implement lazy loading and ensure the persistent
2656
storage is queried only when needed.
2658
raise NotImplementedError(self.is_loaded)
2661
"""Loads the Store from persistent storage."""
2662
raise NotImplementedError(self.load)
2664
def _load_from_string(self, bytes):
2665
"""Create a store from a string in configobj syntax.
2667
:param bytes: A string representing the file content.
2669
raise NotImplementedError(self._load_from_string)
2672
"""Unloads the Store.
2674
This should make is_loaded() return False. This is used when the caller
2675
knows that the persistent storage has changed or may have change since
2678
raise NotImplementedError(self.unload)
2681
"""Saves the Store to persistent storage."""
2682
raise NotImplementedError(self.save)
2684
def external_url(self):
2685
raise NotImplementedError(self.external_url)
2687
def get_sections(self):
2688
"""Returns an ordered iterable of existing sections.
2690
:returns: An iterable of (name, dict).
2692
raise NotImplementedError(self.get_sections)
2694
def get_mutable_section(self, section_name=None):
2695
"""Returns the specified mutable section.
2697
:param section_name: The section identifier
2699
raise NotImplementedError(self.get_mutable_section)
2702
# Mostly for debugging use
2703
return "<config.%s(%s)>" % (self.__class__.__name__,
2704
self.external_url())
2707
class IniFileStore(Store):
2708
"""A config Store using ConfigObj for storage.
2710
:ivar transport: The transport object where the config file is located.
2712
:ivar file_name: The config file basename in the transport directory.
2714
:ivar _config_obj: Private member to hold the ConfigObj instance used to
2715
serialize/deserialize the config file.
2718
def __init__(self, transport, file_name):
2719
"""A config Store using ConfigObj for storage.
2721
:param transport: The transport object where the config file is located.
2723
:param file_name: The config file basename in the transport directory.
2725
super(IniFileStore, self).__init__()
2726
self.transport = transport
2727
self.file_name = file_name
2728
self._config_obj = None
2730
def is_loaded(self):
2731
return self._config_obj != None
2734
self._config_obj = None
2737
"""Load the store from the associated file."""
2738
if self.is_loaded():
2741
content = self.transport.get_bytes(self.file_name)
2742
except errors.PermissionDenied:
2743
trace.warning("Permission denied while trying to load "
2744
"configuration store %s.", self.external_url())
2746
self._load_from_string(content)
2747
for hook in ConfigHooks['load']:
2750
def _load_from_string(self, bytes):
2751
"""Create a config store from a string.
2753
:param bytes: A string representing the file content.
2755
if self.is_loaded():
2756
raise AssertionError('Already loaded: %r' % (self._config_obj,))
2757
co_input = StringIO(bytes)
2759
# The config files are always stored utf8-encoded
2760
self._config_obj = ConfigObj(co_input, encoding='utf-8',
2762
except configobj.ConfigObjError, e:
2763
self._config_obj = None
2764
raise errors.ParseConfigError(e.errors, self.external_url())
2765
except UnicodeDecodeError:
2766
raise errors.ConfigContentError(self.external_url())
2769
if not self.is_loaded():
2773
self._config_obj.write(out)
2774
self.transport.put_bytes(self.file_name, out.getvalue())
2775
for hook in ConfigHooks['save']:
2778
def external_url(self):
2779
# FIXME: external_url should really accepts an optional relpath
2780
# parameter (bug #750169) :-/ -- vila 2011-04-04
2781
# The following will do in the interim but maybe we don't want to
2782
# expose a path here but rather a config ID and its associated
2783
# object </hand wawe>.
2784
return urlutils.join(self.transport.external_url(), self.file_name)
2786
def get_sections(self):
2787
"""Get the configobj section in the file order.
2789
:returns: An iterable of (name, dict).
2791
# We need a loaded store
2794
except (errors.NoSuchFile, errors.PermissionDenied):
2795
# If the file can't be read, there is no sections
2797
cobj = self._config_obj
2799
yield self.readonly_section_class(None, cobj)
2800
for section_name in cobj.sections:
2801
yield self.readonly_section_class(section_name, cobj[section_name])
2803
def get_mutable_section(self, section_name=None):
2804
# We need a loaded store
2807
except errors.NoSuchFile:
2808
# The file doesn't exist, let's pretend it was empty
2809
self._load_from_string('')
2810
if section_name is None:
2811
section = self._config_obj
2813
section = self._config_obj.setdefault(section_name, {})
2814
return self.mutable_section_class(section_name, section)
2817
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
2818
# unlockable stores for use with objects that can already ensure the locking
2819
# (think branches). If different stores (not based on ConfigObj) are created,
2820
# they may face the same issue.
2823
class LockableIniFileStore(IniFileStore):
2824
"""A ConfigObjStore using locks on save to ensure store integrity."""
2826
def __init__(self, transport, file_name, lock_dir_name=None):
2827
"""A config Store using ConfigObj for storage.
2829
:param transport: The transport object where the config file is located.
2831
:param file_name: The config file basename in the transport directory.
2833
if lock_dir_name is None:
2834
lock_dir_name = 'lock'
2835
self.lock_dir_name = lock_dir_name
2836
super(LockableIniFileStore, self).__init__(transport, file_name)
2837
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
2839
def lock_write(self, token=None):
2840
"""Takes a write lock in the directory containing the config file.
2842
If the directory doesn't exist it is created.
2844
# FIXME: This doesn't check the ownership of the created directories as
2845
# ensure_config_dir_exists does. It should if the transport is local
2846
# -- vila 2011-04-06
2847
self.transport.create_prefix()
2848
return self._lock.lock_write(token)
2853
def break_lock(self):
2854
self._lock.break_lock()
2858
# We need to be able to override the undecorated implementation
2859
self.save_without_locking()
2861
def save_without_locking(self):
2862
super(LockableIniFileStore, self).save()
2865
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
2866
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
2867
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
2869
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
2870
# functions or a registry will make it easier and clearer for tests, focusing
2871
# on the relevant parts of the API that needs testing -- vila 20110503 (based
2872
# on a poolie's remark)
2873
class GlobalStore(LockableIniFileStore):
2875
def __init__(self, possible_transports=None):
2876
t = transport.get_transport_from_path(
2877
config_dir(), possible_transports=possible_transports)
2878
super(GlobalStore, self).__init__(t, 'bazaar.conf')
2881
class LocationStore(LockableIniFileStore):
2883
def __init__(self, possible_transports=None):
2884
t = transport.get_transport_from_path(
2885
config_dir(), possible_transports=possible_transports)
2886
super(LocationStore, self).__init__(t, 'locations.conf')
2889
class BranchStore(IniFileStore):
2891
def __init__(self, branch):
2892
super(BranchStore, self).__init__(branch.control_transport,
2894
self.branch = branch
2896
def lock_write(self, token=None):
2897
return self.branch.lock_write(token)
2900
return self.branch.unlock()
2904
# We need to be able to override the undecorated implementation
2905
self.save_without_locking()
2907
def save_without_locking(self):
2908
super(BranchStore, self).save()
2911
class ControlStore(LockableIniFileStore):
2913
def __init__(self, bzrdir):
2914
super(ControlStore, self).__init__(bzrdir.transport,
2916
lock_dir_name='branch_lock')
2919
class SectionMatcher(object):
2920
"""Select sections into a given Store.
2922
This is intended to be used to postpone getting an iterable of sections
2926
def __init__(self, store):
2929
def get_sections(self):
2930
# This is where we require loading the store so we can see all defined
2932
sections = self.store.get_sections()
2933
# Walk the revisions in the order provided
2938
def match(self, section):
2939
"""Does the proposed section match.
2941
:param section: A Section object.
2943
:returns: True if the section matches, False otherwise.
2945
raise NotImplementedError(self.match)
2948
class NameMatcher(SectionMatcher):
2950
def __init__(self, store, section_id):
2951
super(NameMatcher, self).__init__(store)
2952
self.section_id = section_id
2954
def match(self, section):
2955
return section.id == self.section_id
2958
class LocationSection(Section):
2960
def __init__(self, section, length, extra_path):
2961
super(LocationSection, self).__init__(section.id, section.options)
2962
self.length = length
2963
self.extra_path = extra_path
2965
def get(self, name, default=None):
2966
value = super(LocationSection, self).get(name, default)
2967
if value is not None:
2968
policy_name = self.get(name + ':policy', None)
2969
policy = _policy_value.get(policy_name, POLICY_NONE)
2970
if policy == POLICY_APPENDPATH:
2971
value = urlutils.join(value, self.extra_path)
2975
class LocationMatcher(SectionMatcher):
2977
def __init__(self, store, location):
2978
super(LocationMatcher, self).__init__(store)
2979
if location.startswith('file://'):
2980
location = urlutils.local_path_from_url(location)
2981
self.location = location
2983
def _get_matching_sections(self):
2984
"""Get all sections matching ``location``."""
2985
# We slightly diverge from LocalConfig here by allowing the no-name
2986
# section as the most generic one and the lower priority.
2987
no_name_section = None
2989
# Filter out the no_name_section so _iter_for_location_by_parts can be
2990
# used (it assumes all sections have a name).
2991
for section in self.store.get_sections():
2992
if section.id is None:
2993
no_name_section = section
2995
all_sections.append(section)
2996
# Unfortunately _iter_for_location_by_parts deals with section names so
2997
# we have to resync.
2998
filtered_sections = _iter_for_location_by_parts(
2999
[s.id for s in all_sections], self.location)
3000
iter_all_sections = iter(all_sections)
3001
matching_sections = []
3002
if no_name_section is not None:
3003
matching_sections.append(
3004
LocationSection(no_name_section, 0, self.location))
3005
for section_id, extra_path, length in filtered_sections:
3006
# a section id is unique for a given store so it's safe to take the
3007
# first matching section while iterating. Also, all filtered
3008
# sections are part of 'all_sections' and will always be found
3011
section = iter_all_sections.next()
3012
if section_id == section.id:
3013
matching_sections.append(
3014
LocationSection(section, length, extra_path))
3016
return matching_sections
3018
def get_sections(self):
3019
# Override the default implementation as we want to change the order
3020
matching_sections = self._get_matching_sections()
3021
# We want the longest (aka more specific) locations first
3022
sections = sorted(matching_sections,
3023
key=lambda section: (section.length, section.id),
3025
# Sections mentioning 'ignore_parents' restrict the selection
3026
for section in sections:
3027
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3028
ignore = section.get('ignore_parents', None)
3029
if ignore is not None:
3030
ignore = ui.bool_from_string(ignore)
3033
# Finally, we have a valid section
3037
class Stack(object):
3038
"""A stack of configurations where an option can be defined"""
3040
_option_ref_re = lazy_regex.lazy_compile('({[^{}]+})')
3041
"""Describes an exandable option reference.
3043
We want to match the most embedded reference first.
3045
I.e. for '{{foo}}' we will get '{foo}',
3046
for '{bar{baz}}' we will get '{baz}'
3049
def __init__(self, sections_def, store=None, mutable_section_name=None):
3050
"""Creates a stack of sections with an optional store for changes.
3052
:param sections_def: A list of Section or callables that returns an
3053
iterable of Section. This defines the Sections for the Stack and
3054
can be called repeatedly if needed.
3056
:param store: The optional Store where modifications will be
3057
recorded. If none is specified, no modifications can be done.
3059
:param mutable_section_name: The name of the MutableSection where
3060
changes are recorded. This requires the ``store`` parameter to be
3063
self.sections_def = sections_def
3065
self.mutable_section_name = mutable_section_name
3067
def get(self, name, expand=None):
3068
"""Return the *first* option value found in the sections.
3070
This is where we guarantee that sections coming from Store are loaded
3071
lazily: the loading is delayed until we need to either check that an
3072
option exists or get its value, which in turn may require to discover
3073
in which sections it can be defined. Both of these (section and option
3074
existence) require loading the store (even partially).
3076
:param name: The queried option.
3078
:param expand: Whether options references should be expanded.
3080
:returns: The value of the option.
3082
# FIXME: No caching of options nor sections yet -- vila 20110503
3084
expand = _get_expand_default_value()
3086
# Ensuring lazy loading is achieved by delaying section matching (which
3087
# implies querying the persistent storage) until it can't be avoided
3088
# anymore by using callables to describe (possibly empty) section
3090
for section_or_callable in self.sections_def:
3091
# Each section can expand to multiple ones when a callable is used
3092
if callable(section_or_callable):
3093
sections = section_or_callable()
3095
sections = [section_or_callable]
3096
for section in sections:
3097
value = section.get(name)
3098
if value is not None:
3100
if value is not None:
3102
# If the option is registered, it may provide additional info about
3105
opt = option_registry.get(name)
3109
def expand_and_convert(val):
3110
# This may need to be called twice if the value is None or ends up
3111
# being None during expansion or conversion.
3114
if isinstance(val, basestring):
3115
val = self._expand_options_in_string(val)
3117
trace.warning('Cannot expand "%s":'
3118
' %s does not support option expansion'
3119
% (name, type(val)))
3121
val = opt.convert_from_unicode(val)
3123
value = expand_and_convert(value)
3124
if opt is not None and value is None:
3125
# If the option is registered, it may provide a default value
3126
value = opt.get_default()
3127
value = expand_and_convert(value)
3128
for hook in ConfigHooks['get']:
3129
hook(self, name, value)
3132
def expand_options(self, string, env=None):
3133
"""Expand option references in the string in the configuration context.
3135
:param string: The string containing option(s) to expand.
3137
:param env: An option dict defining additional configuration options or
3138
overriding existing ones.
3140
:returns: The expanded string.
3142
return self._expand_options_in_string(string, env)
3144
def _expand_options_in_string(self, string, env=None, _refs=None):
3145
"""Expand options in the string in the configuration context.
3147
:param string: The string to be expanded.
3149
:param env: An option dict defining additional configuration options or
3150
overriding existing ones.
3152
:param _refs: Private list (FIFO) containing the options being expanded
3155
:returns: The expanded string.
3158
# Not much to expand there
3161
# What references are currently resolved (to detect loops)
3164
# We need to iterate until no more refs appear ({{foo}} will need two
3165
# iterations for example).
3167
raw_chunks = Stack._option_ref_re.split(result)
3168
if len(raw_chunks) == 1:
3169
# Shorcut the trivial case: no refs
3172
# Split will isolate refs so that every other chunk is a ref
3173
chunk_is_ref = False
3174
for chunk in raw_chunks:
3175
if not chunk_is_ref:
3176
chunks.append(chunk)
3181
raise errors.OptionExpansionLoop(string, _refs)
3183
value = self._expand_option(name, env, _refs)
3185
raise errors.ExpandingUnknownOption(name, string)
3186
chunks.append(value)
3188
chunk_is_ref = False
3189
result = ''.join(chunks)
3192
def _expand_option(self, name, env, _refs):
3193
if env is not None and name in env:
3194
# Special case, values provided in env takes precedence over
3198
# FIXME: This is a limited implementation, what we really need is a
3199
# way to query the bzr config for the value of an option,
3200
# respecting the scope rules (That is, once we implement fallback
3201
# configs, getting the option value should restart from the top
3202
# config, not the current one) -- vila 20101222
3203
value = self.get(name, expand=False)
3204
value = self._expand_options_in_string(value, env, _refs)
3207
def _get_mutable_section(self):
3208
"""Get the MutableSection for the Stack.
3210
This is where we guarantee that the mutable section is lazily loaded:
3211
this means we won't load the corresponding store before setting a value
3212
or deleting an option. In practice the store will often be loaded but
3213
this allows helps catching some programming errors.
3215
section = self.store.get_mutable_section(self.mutable_section_name)
3218
def set(self, name, value):
3219
"""Set a new value for the option."""
3220
section = self._get_mutable_section()
3221
section.set(name, value)
3222
for hook in ConfigHooks['set']:
3223
hook(self, name, value)
3225
def remove(self, name):
3226
"""Remove an existing option."""
3227
section = self._get_mutable_section()
3228
section.remove(name)
3229
for hook in ConfigHooks['remove']:
3233
# Mostly for debugging use
3234
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3237
class _CompatibleStack(Stack):
3238
"""Place holder for compatibility with previous design.
3240
This is intended to ease the transition from the Config-based design to the
3241
Stack-based design and should not be used nor relied upon by plugins.
3243
One assumption made here is that the daughter classes will all use Stores
3244
derived from LockableIniFileStore).
3246
It implements set() by re-loading the store before applying the
3247
modification and saving it.
3249
The long term plan being to implement a single write by store to save
3250
all modifications, this class should not be used in the interim.
3253
def set(self, name, value):
3256
super(_CompatibleStack, self).set(name, value)
3257
# Force a write to persistent storage
3261
class GlobalStack(_CompatibleStack):
3262
"""Global options only stack."""
3266
gstore = GlobalStore()
3267
super(GlobalStack, self).__init__([gstore.get_sections], gstore)
3270
class LocationStack(_CompatibleStack):
3271
"""Per-location options falling back to global options stack."""
3273
def __init__(self, location):
3274
"""Make a new stack for a location and global configuration.
3276
:param location: A URL prefix to """
3277
lstore = LocationStore()
3278
matcher = LocationMatcher(lstore, location)
3279
gstore = GlobalStore()
3280
super(LocationStack, self).__init__(
3281
[matcher.get_sections, gstore.get_sections], lstore)
3284
class BranchStack(_CompatibleStack):
3285
"""Per-location options falling back to branch then global options stack."""
3287
def __init__(self, branch):
3288
bstore = BranchStore(branch)
3289
lstore = LocationStore()
3290
matcher = LocationMatcher(lstore, branch.base)
3291
gstore = GlobalStore()
3292
super(BranchStack, self).__init__(
3293
[matcher.get_sections, bstore.get_sections, gstore.get_sections],
3295
self.branch = branch
3298
class RemoteControlStack(_CompatibleStack):
3299
"""Remote control-only options stack."""
3301
def __init__(self, bzrdir):
3302
cstore = ControlStore(bzrdir)
3303
super(RemoteControlStack, self).__init__(
3304
[cstore.get_sections],
3306
self.bzrdir = bzrdir
3309
class RemoteBranchStack(_CompatibleStack):
3310
"""Remote branch-only options stack."""
3312
def __init__(self, branch):
3313
bstore = BranchStore(branch)
3314
super(RemoteBranchStack, self).__init__(
3315
[bstore.get_sections],
3317
self.branch = branch
3320
class cmd_config(commands.Command):
3321
__doc__ = """Display, set or remove a configuration option.
3323
Display the active value for a given option.
3325
If --all is specified, NAME is interpreted as a regular expression and all
3326
matching options are displayed mentioning their scope. The active value
3327
that bzr will take into account is the first one displayed for each option.
3329
If no NAME is given, --all .* is implied.
3331
Setting a value is achieved by using name=value without spaces. The value
3332
is set in the most relevant scope and can be checked by displaying the
3336
takes_args = ['name?']
3340
# FIXME: This should be a registry option so that plugins can register
3341
# their own config files (or not) -- vila 20101002
3342
commands.Option('scope', help='Reduce the scope to the specified'
3343
' configuration file',
3345
commands.Option('all',
3346
help='Display all the defined values for the matching options.',
3348
commands.Option('remove', help='Remove the option from'
3349
' the configuration file'),
3352
_see_also = ['configuration']
3354
@commands.display_command
3355
def run(self, name=None, all=False, directory=None, scope=None,
3357
if directory is None:
3359
directory = urlutils.normalize_url(directory)
3361
raise errors.BzrError(
3362
'--all and --remove are mutually exclusive.')
3364
# Delete the option in the given scope
3365
self._remove_config_option(name, directory, scope)
3367
# Defaults to all options
3368
self._show_matching_options('.*', directory, scope)
3371
name, value = name.split('=', 1)
3373
# Display the option(s) value(s)
3375
self._show_matching_options(name, directory, scope)
3377
self._show_value(name, directory, scope)
3380
raise errors.BzrError(
3381
'Only one option can be set.')
3382
# Set the option value
3383
self._set_config_option(name, value, directory, scope)
3385
def _get_configs(self, directory, scope=None):
3386
"""Iterate the configurations specified by ``directory`` and ``scope``.
3388
:param directory: Where the configurations are derived from.
3390
:param scope: A specific config to start from.
3392
if scope is not None:
3393
if scope == 'bazaar':
3394
yield GlobalConfig()
3395
elif scope == 'locations':
3396
yield LocationConfig(directory)
3397
elif scope == 'branch':
3398
(_, br, _) = bzrdir.BzrDir.open_containing_tree_or_branch(
3400
yield br.get_config()
3403
(_, br, _) = bzrdir.BzrDir.open_containing_tree_or_branch(
3405
yield br.get_config()
3406
except errors.NotBranchError:
3407
yield LocationConfig(directory)
3408
yield GlobalConfig()
3410
def _show_value(self, name, directory, scope):
3412
for c in self._get_configs(directory, scope):
3415
for (oname, value, section, conf_id, parser) in c._get_options():
3417
# Display only the first value and exit
3419
# FIXME: We need to use get_user_option to take policies
3420
# into account and we need to make sure the option exists
3421
# too (hence the two for loops), this needs a better API
3423
value = c.get_user_option(name)
3424
# Quote the value appropriately
3425
value = parser._quote(value)
3426
self.outf.write('%s\n' % (value,))
3430
raise errors.NoSuchConfigOption(name)
3432
def _show_matching_options(self, name, directory, scope):
3433
name = lazy_regex.lazy_compile(name)
3434
# We want any error in the regexp to be raised *now* so we need to
3435
# avoid the delay introduced by the lazy regexp. But, we still do
3436
# want the nicer errors raised by lazy_regex.
3437
name._compile_and_collapse()
3440
for c in self._get_configs(directory, scope):
3441
for (oname, value, section, conf_id, parser) in c._get_options():
3442
if name.search(oname):
3443
if cur_conf_id != conf_id:
3444
# Explain where the options are defined
3445
self.outf.write('%s:\n' % (conf_id,))
3446
cur_conf_id = conf_id
3448
if (section not in (None, 'DEFAULT')
3449
and cur_section != section):
3450
# Display the section if it's not the default (or only)
3452
self.outf.write(' [%s]\n' % (section,))
3453
cur_section = section
3454
self.outf.write(' %s = %s\n' % (oname, value))
3456
def _set_config_option(self, name, value, directory, scope):
3457
for conf in self._get_configs(directory, scope):
3458
conf.set_user_option(name, value)
3461
raise errors.NoSuchConfig(scope)
3463
def _remove_config_option(self, name, directory, scope):
3465
raise errors.BzrCommandError(
3466
'--remove expects an option to remove.')
3468
for conf in self._get_configs(directory, scope):
3469
for (section_name, section, conf_id) in conf._get_sections():
3470
if scope is not None and conf_id != scope:
3471
# Not the right configuration file
3474
if conf_id != conf.config_id():
3475
conf = self._get_configs(directory, conf_id).next()
3476
# We use the first section in the first config where the
3477
# option is defined to remove it
3478
conf.remove_user_option(name, section_name)
3483
raise errors.NoSuchConfig(scope)
3485
raise errors.NoSuchConfigOption(name)
3489
# We need adapters that can build a Store or a Stack in a test context. Test
3490
# classes, based on TestCaseWithTransport, can use the registry to parametrize
3491
# themselves. The builder will receive a test instance and should return a
3492
# ready-to-use store or stack. Plugins that define new store/stacks can also
3493
# register themselves here to be tested against the tests defined in
3494
# bzrlib.tests.test_config. Note that the builder can be called multiple times
3495
# for the same tests.
3497
# The registered object should be a callable receiving a test instance
3498
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
3500
test_store_builder_registry = registry.Registry()
3502
# The registered object should be a callable receiving a test instance
3503
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
3505
test_stack_builder_registry = registry.Registry()
added
removed
bzrlib/config.py
