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)):
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
# Use a an empty dict to initialize an empty configobj avoiding all
2432
# parsing and encoding checks
2433
_list_converter_config = configobj.ConfigObj(
2434
{}, encoding='utf-8', list_values=True, interpolation=False)
2437
def list_from_store(unicode_str):
2438
if not isinstance(unicode_str, basestring):
2440
# Now inject our string directly as unicode. All callers got their value
2441
# from configobj, so values that need to be quoted are already properly
2443
_list_converter_config.reset()
2444
_list_converter_config._parse([u"list=%s" % (unicode_str,)])
2445
maybe_list = _list_converter_config['list']
2446
# ConfigObj return '' instead of u''. Use 'str' below to catch all cases.
2447
if isinstance(maybe_list, basestring):
2449
# A single value, most probably the user forgot (or didn't care to
2450
# add) the final ','
2453
# The empty string, convert to empty list
2456
# We rely on ConfigObj providing us with a list already
2461
class OptionRegistry(registry.Registry):
2462
"""Register config options by their name.
2464
This overrides ``registry.Registry`` to simplify registration by acquiring
2465
some information from the option object itself.
2468
def register(self, option):
2469
"""Register a new option to its name.
2471
:param option: The option to register. Its name is used as the key.
2473
super(OptionRegistry, self).register(option.name, option,
2476
def register_lazy(self, key, module_name, member_name):
2477
"""Register a new option to be loaded on request.
2479
:param key: the key to request the option later. Since the registration
2480
is lazy, it should be provided and match the option name.
2482
:param module_name: the python path to the module. Such as 'os.path'.
2484
:param member_name: the member of the module to return. If empty or
2485
None, get() will return the module itself.
2487
super(OptionRegistry, self).register_lazy(key,
2488
module_name, member_name)
2490
def get_help(self, key=None):
2491
"""Get the help text associated with the given key"""
2492
option = self.get(key)
2493
the_help = option.help
2494
if callable(the_help):
2495
return the_help(self, key)
2499
option_registry = OptionRegistry()
2502
# Registered options in lexicographical order
2504
option_registry.register(
2505
Option('bzr.workingtree.worth_saving_limit', default=10,
2506
from_unicode=int_from_store, invalid='warning',
2508
How many changes before saving the dirstate.
2510
-1 means that we will never rewrite the dirstate file for only
2511
stat-cache changes. Regardless of this setting, we will always rewrite
2512
the dirstate file if a file is added/removed/renamed/etc. This flag only
2513
affects the behavior of updating the dirstate file after we notice that
2514
a file has been touched.
2516
option_registry.register(
2517
Option('dirstate.fdatasync', default=True,
2518
from_unicode=bool_from_store,
2520
Flush dirstate changes onto physical disk?
2522
If true (default), working tree metadata changes are flushed through the
2523
OS buffers to physical disk. This is somewhat slower, but means data
2524
should not be lost if the machine crashes. See also repository.fdatasync.
2526
option_registry.register(
2527
Option('debug_flags', default=[], from_unicode=list_from_store,
2528
help='Debug flags to activate.'))
2529
option_registry.register(
2530
Option('default_format', default='2a',
2531
help='Format used when creating branches.'))
2532
option_registry.register(
2533
Option('dpush_strict', default=None,
2534
from_unicode=bool_from_store,
2536
The default value for ``dpush --strict``.
2538
If present, defines the ``--strict`` option default value for checking
2539
uncommitted changes before pushing into a different VCS without any
2540
custom bzr metadata.
2542
option_registry.register(
2544
help='The command called to launch an editor to enter a message.'))
2545
option_registry.register(
2546
Option('ignore_missing_extensions', default=False,
2547
from_unicode=bool_from_store,
2549
Control the missing extensions warning display.
2551
The warning will not be emitted if set to True.
2553
option_registry.register(
2555
help='Language to translate messages into.'))
2556
option_registry.register(
2557
Option('locks.steal_dead', default=False, from_unicode=bool_from_store,
2559
Steal locks that appears to be dead.
2561
If set to True, bzr will check if a lock is supposed to be held by an
2562
active process from the same user on the same machine. If the user and
2563
machine match, but no process with the given PID is active, then bzr
2564
will automatically break the stale lock, and create a new lock for
2566
Otherwise, bzr will prompt as normal to break the lock.
2568
option_registry.register(
2569
Option('output_encoding',
2570
help= 'Unicode encoding for output'
2571
' (terminal encoding if not specified).'))
2572
option_registry.register(
2573
Option('push_strict', default=None,
2574
from_unicode=bool_from_store,
2576
The default value for ``push --strict``.
2578
If present, defines the ``--strict`` option default value for checking
2579
uncommitted changes before sending a merge directive.
2581
option_registry.register(
2582
Option('repository.fdatasync', default=True,
2583
from_unicode=bool_from_store,
2585
Flush repository changes onto physical disk?
2587
If true (default), repository changes are flushed through the OS buffers
2588
to physical disk. This is somewhat slower, but means data should not be
2589
lost if the machine crashes. See also dirstate.fdatasync.
2591
option_registry.register(
2592
Option('send_strict', default=None,
2593
from_unicode=bool_from_store,
2595
The default value for ``send --strict``.
2597
If present, defines the ``--strict`` option default value for checking
2598
uncommitted changes before pushing.
2602
class Section(object):
2603
"""A section defines a dict of option name => value.
2605
This is merely a read-only dict which can add some knowledge about the
2606
options. It is *not* a python dict object though and doesn't try to mimic
2610
def __init__(self, section_id, options):
2611
self.id = section_id
2612
# We re-use the dict-like object received
2613
self.options = options
2615
def get(self, name, default=None):
2616
return self.options.get(name, default)
2619
# Mostly for debugging use
2620
return "<config.%s id=%s>" % (self.__class__.__name__, self.id)
2623
_NewlyCreatedOption = object()
2624
"""Was the option created during the MutableSection lifetime"""
2627
class MutableSection(Section):
2628
"""A section allowing changes and keeping track of the original values."""
2630
def __init__(self, section_id, options):
2631
super(MutableSection, self).__init__(section_id, options)
2634
def set(self, name, value):
2635
if name not in self.options:
2636
# This is a new option
2637
self.orig[name] = _NewlyCreatedOption
2638
elif name not in self.orig:
2639
self.orig[name] = self.get(name, None)
2640
self.options[name] = value
2642
def remove(self, name):
2643
if name not in self.orig:
2644
self.orig[name] = self.get(name, None)
2645
del self.options[name]
2648
class CommandLineSection(MutableSection):
2649
"""A section used to carry command line overrides for the config options."""
2651
def __init__(self, opts=None):
2654
super(CommandLineSection, self).__init__('cmdline-overrides', opts)
2657
# The dict should be cleared but not replaced so it can be shared.
2658
self.options.clear()
2660
def _from_cmdline(self, overrides):
2661
# Reset before accepting new definitions
2663
for over in overrides:
2665
name, value = over.split('=', 1)
2667
raise errors.BzrCommandError(
2668
gettext("Invalid '%s', should be of the form 'name=value'")
2670
self.set(name, value)
2673
class Store(object):
2674
"""Abstract interface to persistent storage for configuration options."""
2676
readonly_section_class = Section
2677
mutable_section_class = MutableSection
2679
def is_loaded(self):
2680
"""Returns True if the Store has been loaded.
2682
This is used to implement lazy loading and ensure the persistent
2683
storage is queried only when needed.
2685
raise NotImplementedError(self.is_loaded)
2688
"""Loads the Store from persistent storage."""
2689
raise NotImplementedError(self.load)
2691
def _load_from_string(self, bytes):
2692
"""Create a store from a string in configobj syntax.
2694
:param bytes: A string representing the file content.
2696
raise NotImplementedError(self._load_from_string)
2699
"""Unloads the Store.
2701
This should make is_loaded() return False. This is used when the caller
2702
knows that the persistent storage has changed or may have change since
2705
raise NotImplementedError(self.unload)
2708
"""Saves the Store to persistent storage."""
2709
raise NotImplementedError(self.save)
2711
def external_url(self):
2712
raise NotImplementedError(self.external_url)
2714
def get_sections(self):
2715
"""Returns an ordered iterable of existing sections.
2717
:returns: An iterable of (name, dict).
2719
raise NotImplementedError(self.get_sections)
2721
def get_mutable_section(self, section_name=None):
2722
"""Returns the specified mutable section.
2724
:param section_name: The section identifier
2726
raise NotImplementedError(self.get_mutable_section)
2729
# Mostly for debugging use
2730
return "<config.%s(%s)>" % (self.__class__.__name__,
2731
self.external_url())
2734
class IniFileStore(Store):
2735
"""A config Store using ConfigObj for storage.
2737
:ivar transport: The transport object where the config file is located.
2739
:ivar file_name: The config file basename in the transport directory.
2741
:ivar _config_obj: Private member to hold the ConfigObj instance used to
2742
serialize/deserialize the config file.
2745
def __init__(self, transport, file_name):
2746
"""A config Store using ConfigObj for storage.
2748
:param transport: The transport object where the config file is located.
2750
:param file_name: The config file basename in the transport directory.
2752
super(IniFileStore, self).__init__()
2753
self.transport = transport
2754
self.file_name = file_name
2755
self._config_obj = None
2757
def is_loaded(self):
2758
return self._config_obj != None
2761
self._config_obj = None
2764
"""Load the store from the associated file."""
2765
if self.is_loaded():
2768
content = self.transport.get_bytes(self.file_name)
2769
except errors.PermissionDenied:
2770
trace.warning("Permission denied while trying to load "
2771
"configuration store %s.", self.external_url())
2773
self._load_from_string(content)
2774
for hook in ConfigHooks['load']:
2777
def _load_from_string(self, bytes):
2778
"""Create a config store from a string.
2780
:param bytes: A string representing the file content.
2782
if self.is_loaded():
2783
raise AssertionError('Already loaded: %r' % (self._config_obj,))
2784
co_input = StringIO(bytes)
2786
# The config files are always stored utf8-encoded
2787
self._config_obj = ConfigObj(co_input, encoding='utf-8',
2789
except configobj.ConfigObjError, e:
2790
self._config_obj = None
2791
raise errors.ParseConfigError(e.errors, self.external_url())
2792
except UnicodeDecodeError:
2793
raise errors.ConfigContentError(self.external_url())
2796
if not self.is_loaded():
2800
self._config_obj.write(out)
2801
self.transport.put_bytes(self.file_name, out.getvalue())
2802
for hook in ConfigHooks['save']:
2805
def external_url(self):
2806
# FIXME: external_url should really accepts an optional relpath
2807
# parameter (bug #750169) :-/ -- vila 2011-04-04
2808
# The following will do in the interim but maybe we don't want to
2809
# expose a path here but rather a config ID and its associated
2810
# object </hand wawe>.
2811
return urlutils.join(self.transport.external_url(), self.file_name)
2813
def get_sections(self):
2814
"""Get the configobj section in the file order.
2816
:returns: An iterable of (name, dict).
2818
# We need a loaded store
2821
except (errors.NoSuchFile, errors.PermissionDenied):
2822
# If the file can't be read, there is no sections
2824
cobj = self._config_obj
2826
yield self.readonly_section_class(None, cobj)
2827
for section_name in cobj.sections:
2828
yield self.readonly_section_class(section_name, cobj[section_name])
2830
def get_mutable_section(self, section_name=None):
2831
# We need a loaded store
2834
except errors.NoSuchFile:
2835
# The file doesn't exist, let's pretend it was empty
2836
self._load_from_string('')
2837
if section_name is None:
2838
section = self._config_obj
2840
section = self._config_obj.setdefault(section_name, {})
2841
return self.mutable_section_class(section_name, section)
2844
# Note that LockableConfigObjStore inherits from ConfigObjStore because we need
2845
# unlockable stores for use with objects that can already ensure the locking
2846
# (think branches). If different stores (not based on ConfigObj) are created,
2847
# they may face the same issue.
2850
class LockableIniFileStore(IniFileStore):
2851
"""A ConfigObjStore using locks on save to ensure store integrity."""
2853
def __init__(self, transport, file_name, lock_dir_name=None):
2854
"""A config Store using ConfigObj for storage.
2856
:param transport: The transport object where the config file is located.
2858
:param file_name: The config file basename in the transport directory.
2860
if lock_dir_name is None:
2861
lock_dir_name = 'lock'
2862
self.lock_dir_name = lock_dir_name
2863
super(LockableIniFileStore, self).__init__(transport, file_name)
2864
self._lock = lockdir.LockDir(self.transport, self.lock_dir_name)
2866
def lock_write(self, token=None):
2867
"""Takes a write lock in the directory containing the config file.
2869
If the directory doesn't exist it is created.
2871
# FIXME: This doesn't check the ownership of the created directories as
2872
# ensure_config_dir_exists does. It should if the transport is local
2873
# -- vila 2011-04-06
2874
self.transport.create_prefix()
2875
return self._lock.lock_write(token)
2880
def break_lock(self):
2881
self._lock.break_lock()
2885
# We need to be able to override the undecorated implementation
2886
self.save_without_locking()
2888
def save_without_locking(self):
2889
super(LockableIniFileStore, self).save()
2892
# FIXME: global, bazaar, shouldn't that be 'user' instead or even
2893
# 'user_defaults' as opposed to 'user_overrides', 'system_defaults'
2894
# (/etc/bzr/bazaar.conf) and 'system_overrides' ? -- vila 2011-04-05
2896
# FIXME: Moreover, we shouldn't need classes for these stores either, factory
2897
# functions or a registry will make it easier and clearer for tests, focusing
2898
# on the relevant parts of the API that needs testing -- vila 20110503 (based
2899
# on a poolie's remark)
2900
class GlobalStore(LockableIniFileStore):
2902
def __init__(self, possible_transports=None):
2903
t = transport.get_transport_from_path(
2904
config_dir(), possible_transports=possible_transports)
2905
super(GlobalStore, self).__init__(t, 'bazaar.conf')
2908
class LocationStore(LockableIniFileStore):
2910
def __init__(self, possible_transports=None):
2911
t = transport.get_transport_from_path(
2912
config_dir(), possible_transports=possible_transports)
2913
super(LocationStore, self).__init__(t, 'locations.conf')
2916
class BranchStore(IniFileStore):
2918
def __init__(self, branch):
2919
super(BranchStore, self).__init__(branch.control_transport,
2921
self.branch = branch
2923
def lock_write(self, token=None):
2924
return self.branch.lock_write(token)
2927
return self.branch.unlock()
2931
# We need to be able to override the undecorated implementation
2932
self.save_without_locking()
2934
def save_without_locking(self):
2935
super(BranchStore, self).save()
2938
class ControlStore(LockableIniFileStore):
2940
def __init__(self, bzrdir):
2941
super(ControlStore, self).__init__(bzrdir.transport,
2943
lock_dir_name='branch_lock')
2946
class SectionMatcher(object):
2947
"""Select sections into a given Store.
2949
This is intended to be used to postpone getting an iterable of sections
2953
def __init__(self, store):
2956
def get_sections(self):
2957
# This is where we require loading the store so we can see all defined
2959
sections = self.store.get_sections()
2960
# Walk the revisions in the order provided
2965
def match(self, section):
2966
"""Does the proposed section match.
2968
:param section: A Section object.
2970
:returns: True if the section matches, False otherwise.
2972
raise NotImplementedError(self.match)
2975
class NameMatcher(SectionMatcher):
2977
def __init__(self, store, section_id):
2978
super(NameMatcher, self).__init__(store)
2979
self.section_id = section_id
2981
def match(self, section):
2982
return section.id == self.section_id
2985
class LocationSection(Section):
2987
def __init__(self, section, length, extra_path):
2988
super(LocationSection, self).__init__(section.id, section.options)
2989
self.length = length
2990
self.extra_path = extra_path
2992
def get(self, name, default=None):
2993
value = super(LocationSection, self).get(name, default)
2994
if value is not None:
2995
policy_name = self.get(name + ':policy', None)
2996
policy = _policy_value.get(policy_name, POLICY_NONE)
2997
if policy == POLICY_APPENDPATH:
2998
value = urlutils.join(value, self.extra_path)
3002
class LocationMatcher(SectionMatcher):
3004
def __init__(self, store, location):
3005
super(LocationMatcher, self).__init__(store)
3006
if location.startswith('file://'):
3007
location = urlutils.local_path_from_url(location)
3008
self.location = location
3010
def _get_matching_sections(self):
3011
"""Get all sections matching ``location``."""
3012
# We slightly diverge from LocalConfig here by allowing the no-name
3013
# section as the most generic one and the lower priority.
3014
no_name_section = None
3016
# Filter out the no_name_section so _iter_for_location_by_parts can be
3017
# used (it assumes all sections have a name).
3018
for section in self.store.get_sections():
3019
if section.id is None:
3020
no_name_section = section
3022
all_sections.append(section)
3023
# Unfortunately _iter_for_location_by_parts deals with section names so
3024
# we have to resync.
3025
filtered_sections = _iter_for_location_by_parts(
3026
[s.id for s in all_sections], self.location)
3027
iter_all_sections = iter(all_sections)
3028
matching_sections = []
3029
if no_name_section is not None:
3030
matching_sections.append(
3031
LocationSection(no_name_section, 0, self.location))
3032
for section_id, extra_path, length in filtered_sections:
3033
# a section id is unique for a given store so it's safe to take the
3034
# first matching section while iterating. Also, all filtered
3035
# sections are part of 'all_sections' and will always be found
3038
section = iter_all_sections.next()
3039
if section_id == section.id:
3040
matching_sections.append(
3041
LocationSection(section, length, extra_path))
3043
return matching_sections
3045
def get_sections(self):
3046
# Override the default implementation as we want to change the order
3047
matching_sections = self._get_matching_sections()
3048
# We want the longest (aka more specific) locations first
3049
sections = sorted(matching_sections,
3050
key=lambda section: (section.length, section.id),
3052
# Sections mentioning 'ignore_parents' restrict the selection
3053
for section in sections:
3054
# FIXME: We really want to use as_bool below -- vila 2011-04-07
3055
ignore = section.get('ignore_parents', None)
3056
if ignore is not None:
3057
ignore = ui.bool_from_string(ignore)
3060
# Finally, we have a valid section
3064
class Stack(object):
3065
"""A stack of configurations where an option can be defined"""
3067
_option_ref_re = lazy_regex.lazy_compile('({[^{}]+})')
3068
"""Describes an exandable option reference.
3070
We want to match the most embedded reference first.
3072
I.e. for '{{foo}}' we will get '{foo}',
3073
for '{bar{baz}}' we will get '{baz}'
3076
def __init__(self, sections_def, store=None, mutable_section_name=None):
3077
"""Creates a stack of sections with an optional store for changes.
3079
:param sections_def: A list of Section or callables that returns an
3080
iterable of Section. This defines the Sections for the Stack and
3081
can be called repeatedly if needed.
3083
:param store: The optional Store where modifications will be
3084
recorded. If none is specified, no modifications can be done.
3086
:param mutable_section_name: The name of the MutableSection where
3087
changes are recorded. This requires the ``store`` parameter to be
3090
self.sections_def = sections_def
3092
self.mutable_section_name = mutable_section_name
3094
def get(self, name, expand=None):
3095
"""Return the *first* option value found in the sections.
3097
This is where we guarantee that sections coming from Store are loaded
3098
lazily: the loading is delayed until we need to either check that an
3099
option exists or get its value, which in turn may require to discover
3100
in which sections it can be defined. Both of these (section and option
3101
existence) require loading the store (even partially).
3103
:param name: The queried option.
3105
:param expand: Whether options references should be expanded.
3107
:returns: The value of the option.
3109
# FIXME: No caching of options nor sections yet -- vila 20110503
3111
expand = _get_expand_default_value()
3113
# Ensuring lazy loading is achieved by delaying section matching (which
3114
# implies querying the persistent storage) until it can't be avoided
3115
# anymore by using callables to describe (possibly empty) section
3117
for section_or_callable in self.sections_def:
3118
# Each section can expand to multiple ones when a callable is used
3119
if callable(section_or_callable):
3120
sections = section_or_callable()
3122
sections = [section_or_callable]
3123
for section in sections:
3124
value = section.get(name)
3125
if value is not None:
3127
if value is not None:
3129
# If the option is registered, it may provide additional info about
3132
opt = option_registry.get(name)
3136
def expand_and_convert(val):
3137
# This may need to be called twice if the value is None or ends up
3138
# being None during expansion or conversion.
3141
if isinstance(val, basestring):
3142
val = self._expand_options_in_string(val)
3144
trace.warning('Cannot expand "%s":'
3145
' %s does not support option expansion'
3146
% (name, type(val)))
3148
val = opt.convert_from_unicode(val)
3150
value = expand_and_convert(value)
3151
if opt is not None and value is None:
3152
# If the option is registered, it may provide a default value
3153
value = opt.get_default()
3154
value = expand_and_convert(value)
3155
for hook in ConfigHooks['get']:
3156
hook(self, name, value)
3159
def expand_options(self, string, env=None):
3160
"""Expand option references in the string in the configuration context.
3162
:param string: The string containing option(s) to expand.
3164
:param env: An option dict defining additional configuration options or
3165
overriding existing ones.
3167
:returns: The expanded string.
3169
return self._expand_options_in_string(string, env)
3171
def _expand_options_in_string(self, string, env=None, _refs=None):
3172
"""Expand options in the string in the configuration context.
3174
:param string: The string to be expanded.
3176
:param env: An option dict defining additional configuration options or
3177
overriding existing ones.
3179
:param _refs: Private list (FIFO) containing the options being expanded
3182
:returns: The expanded string.
3185
# Not much to expand there
3188
# What references are currently resolved (to detect loops)
3191
# We need to iterate until no more refs appear ({{foo}} will need two
3192
# iterations for example).
3194
raw_chunks = Stack._option_ref_re.split(result)
3195
if len(raw_chunks) == 1:
3196
# Shorcut the trivial case: no refs
3199
# Split will isolate refs so that every other chunk is a ref
3200
chunk_is_ref = False
3201
for chunk in raw_chunks:
3202
if not chunk_is_ref:
3203
chunks.append(chunk)
3208
raise errors.OptionExpansionLoop(string, _refs)
3210
value = self._expand_option(name, env, _refs)
3212
raise errors.ExpandingUnknownOption(name, string)
3213
chunks.append(value)
3215
chunk_is_ref = False
3216
result = ''.join(chunks)
3219
def _expand_option(self, name, env, _refs):
3220
if env is not None and name in env:
3221
# Special case, values provided in env takes precedence over
3225
# FIXME: This is a limited implementation, what we really need is a
3226
# way to query the bzr config for the value of an option,
3227
# respecting the scope rules (That is, once we implement fallback
3228
# configs, getting the option value should restart from the top
3229
# config, not the current one) -- vila 20101222
3230
value = self.get(name, expand=False)
3231
value = self._expand_options_in_string(value, env, _refs)
3234
def _get_mutable_section(self):
3235
"""Get the MutableSection for the Stack.
3237
This is where we guarantee that the mutable section is lazily loaded:
3238
this means we won't load the corresponding store before setting a value
3239
or deleting an option. In practice the store will often be loaded but
3240
this allows helps catching some programming errors.
3242
section = self.store.get_mutable_section(self.mutable_section_name)
3245
def set(self, name, value):
3246
"""Set a new value for the option."""
3247
section = self._get_mutable_section()
3248
section.set(name, value)
3249
for hook in ConfigHooks['set']:
3250
hook(self, name, value)
3252
def remove(self, name):
3253
"""Remove an existing option."""
3254
section = self._get_mutable_section()
3255
section.remove(name)
3256
for hook in ConfigHooks['remove']:
3260
# Mostly for debugging use
3261
return "<config.%s(%s)>" % (self.__class__.__name__, id(self))
3264
class _CompatibleStack(Stack):
3265
"""Place holder for compatibility with previous design.
3267
This is intended to ease the transition from the Config-based design to the
3268
Stack-based design and should not be used nor relied upon by plugins.
3270
One assumption made here is that the daughter classes will all use Stores
3271
derived from LockableIniFileStore).
3273
It implements set() by re-loading the store before applying the
3274
modification and saving it.
3276
The long term plan being to implement a single write by store to save
3277
all modifications, this class should not be used in the interim.
3280
def set(self, name, value):
3283
super(_CompatibleStack, self).set(name, value)
3284
# Force a write to persistent storage
3288
class GlobalStack(_CompatibleStack):
3289
"""Global options only stack."""
3293
gstore = GlobalStore()
3294
super(GlobalStack, self).__init__(
3295
[bzrlib.global_state.cmdline_overrides, gstore.get_sections],
3299
class LocationStack(_CompatibleStack):
3300
"""Per-location options falling back to global options stack."""
3302
def __init__(self, location):
3303
"""Make a new stack for a location and global configuration.
3305
:param location: A URL prefix to """
3306
lstore = LocationStore()
3307
matcher = LocationMatcher(lstore, location)
3308
gstore = GlobalStore()
3309
super(LocationStack, self).__init__(
3310
[bzrlib.global_state.cmdline_overrides,
3311
matcher.get_sections, gstore.get_sections],
3315
class BranchStack(_CompatibleStack):
3316
"""Per-location options falling back to branch then global options stack."""
3318
def __init__(self, branch):
3319
bstore = BranchStore(branch)
3320
lstore = LocationStore()
3321
matcher = LocationMatcher(lstore, branch.base)
3322
gstore = GlobalStore()
3323
super(BranchStack, self).__init__(
3324
[bzrlib.global_state.cmdline_overrides,
3325
matcher.get_sections, bstore.get_sections, gstore.get_sections],
3327
self.branch = branch
3330
class RemoteControlStack(_CompatibleStack):
3331
"""Remote control-only options stack."""
3333
def __init__(self, bzrdir):
3334
cstore = ControlStore(bzrdir)
3335
super(RemoteControlStack, self).__init__(
3336
[cstore.get_sections],
3338
self.bzrdir = bzrdir
3341
class RemoteBranchStack(_CompatibleStack):
3342
"""Remote branch-only options stack."""
3344
def __init__(self, branch):
3345
bstore = BranchStore(branch)
3346
super(RemoteBranchStack, self).__init__(
3347
[bstore.get_sections],
3349
self.branch = branch
3352
class cmd_config(commands.Command):
3353
__doc__ = """Display, set or remove a configuration option.
3355
Display the active value for a given option.
3357
If --all is specified, NAME is interpreted as a regular expression and all
3358
matching options are displayed mentioning their scope. The active value
3359
that bzr will take into account is the first one displayed for each option.
3361
If no NAME is given, --all .* is implied.
3363
Setting a value is achieved by using name=value without spaces. The value
3364
is set in the most relevant scope and can be checked by displaying the
3368
takes_args = ['name?']
3372
# FIXME: This should be a registry option so that plugins can register
3373
# their own config files (or not) -- vila 20101002
3374
commands.Option('scope', help='Reduce the scope to the specified'
3375
' configuration file',
3377
commands.Option('all',
3378
help='Display all the defined values for the matching options.',
3380
commands.Option('remove', help='Remove the option from'
3381
' the configuration file'),
3384
_see_also = ['configuration']
3386
@commands.display_command
3387
def run(self, name=None, all=False, directory=None, scope=None,
3389
if directory is None:
3391
directory = urlutils.normalize_url(directory)
3393
raise errors.BzrError(
3394
'--all and --remove are mutually exclusive.')
3396
# Delete the option in the given scope
3397
self._remove_config_option(name, directory, scope)
3399
# Defaults to all options
3400
self._show_matching_options('.*', directory, scope)
3403
name, value = name.split('=', 1)
3405
# Display the option(s) value(s)
3407
self._show_matching_options(name, directory, scope)
3409
self._show_value(name, directory, scope)
3412
raise errors.BzrError(
3413
'Only one option can be set.')
3414
# Set the option value
3415
self._set_config_option(name, value, directory, scope)
3417
def _get_configs(self, directory, scope=None):
3418
"""Iterate the configurations specified by ``directory`` and ``scope``.
3420
:param directory: Where the configurations are derived from.
3422
:param scope: A specific config to start from.
3424
if scope is not None:
3425
if scope == 'bazaar':
3426
yield GlobalConfig()
3427
elif scope == 'locations':
3428
yield LocationConfig(directory)
3429
elif scope == 'branch':
3430
(_, br, _) = bzrdir.BzrDir.open_containing_tree_or_branch(
3432
yield br.get_config()
3435
(_, br, _) = bzrdir.BzrDir.open_containing_tree_or_branch(
3437
yield br.get_config()
3438
except errors.NotBranchError:
3439
yield LocationConfig(directory)
3440
yield GlobalConfig()
3442
def _show_value(self, name, directory, scope):
3444
for c in self._get_configs(directory, scope):
3447
for (oname, value, section, conf_id, parser) in c._get_options():
3449
# Display only the first value and exit
3451
# FIXME: We need to use get_user_option to take policies
3452
# into account and we need to make sure the option exists
3453
# too (hence the two for loops), this needs a better API
3455
value = c.get_user_option(name)
3456
# Quote the value appropriately
3457
value = parser._quote(value)
3458
self.outf.write('%s\n' % (value,))
3462
raise errors.NoSuchConfigOption(name)
3464
def _show_matching_options(self, name, directory, scope):
3465
name = lazy_regex.lazy_compile(name)
3466
# We want any error in the regexp to be raised *now* so we need to
3467
# avoid the delay introduced by the lazy regexp. But, we still do
3468
# want the nicer errors raised by lazy_regex.
3469
name._compile_and_collapse()
3472
for c in self._get_configs(directory, scope):
3473
for (oname, value, section, conf_id, parser) in c._get_options():
3474
if name.search(oname):
3475
if cur_conf_id != conf_id:
3476
# Explain where the options are defined
3477
self.outf.write('%s:\n' % (conf_id,))
3478
cur_conf_id = conf_id
3480
if (section not in (None, 'DEFAULT')
3481
and cur_section != section):
3482
# Display the section if it's not the default (or only)
3484
self.outf.write(' [%s]\n' % (section,))
3485
cur_section = section
3486
self.outf.write(' %s = %s\n' % (oname, value))
3488
def _set_config_option(self, name, value, directory, scope):
3489
for conf in self._get_configs(directory, scope):
3490
conf.set_user_option(name, value)
3493
raise errors.NoSuchConfig(scope)
3495
def _remove_config_option(self, name, directory, scope):
3497
raise errors.BzrCommandError(
3498
'--remove expects an option to remove.')
3500
for conf in self._get_configs(directory, scope):
3501
for (section_name, section, conf_id) in conf._get_sections():
3502
if scope is not None and conf_id != scope:
3503
# Not the right configuration file
3506
if conf_id != conf.config_id():
3507
conf = self._get_configs(directory, conf_id).next()
3508
# We use the first section in the first config where the
3509
# option is defined to remove it
3510
conf.remove_user_option(name, section_name)
3515
raise errors.NoSuchConfig(scope)
3517
raise errors.NoSuchConfigOption(name)
3521
# We need adapters that can build a Store or a Stack in a test context. Test
3522
# classes, based on TestCaseWithTransport, can use the registry to parametrize
3523
# themselves. The builder will receive a test instance and should return a
3524
# ready-to-use store or stack. Plugins that define new store/stacks can also
3525
# register themselves here to be tested against the tests defined in
3526
# bzrlib.tests.test_config. Note that the builder can be called multiple times
3527
# for the same tests.
3529
# The registered object should be a callable receiving a test instance
3530
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Store
3532
test_store_builder_registry = registry.Registry()
3534
# The registered object should be a callable receiving a test instance
3535
# parameter (inheriting from tests.TestCaseWithTransport) and returning a Stack
3537
test_stack_builder_registry = registry.Registry()