# Copyright (C) 2010, 2011 Canonical Ltd # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA """ControlDir is the basic control directory class. The ControlDir class is the base for the control directory used by all bzr and foreign formats. For the ".bzr" implementation, see bzrlib.bzrdir.BzrDir. """ from bzrlib.lazy_import import lazy_import lazy_import(globals(), """ import textwrap from bzrlib import ( errors, revision as _mod_revision, transport as _mod_transport, ui, ) from bzrlib.push import ( PushResult, ) """) from bzrlib import registry class ControlComponent(object): """Abstract base class for control directory components. This provides interfaces that are common across controldirs, repositories, branches, and workingtree control directories. They all expose two urls and transports: the *user* URL is the one that stops above the control directory (eg .bzr) and that should normally be used in messages, and the *control* URL is under that in eg .bzr/checkout and is used to read the control files. This can be used as a mixin and is intended to fit with foreign formats. """ @property def control_transport(self): raise NotImplementedError @property def control_url(self): return self.control_transport.base @property def user_transport(self): raise NotImplementedError @property def user_url(self): return self.user_transport.base class ControlDir(ControlComponent): """A control directory. While this represents a generic control directory, there are a few features that are present in this interface that are currently only supported by one of its implementations, BzrDir. These features (bound branches, stacked branches) are currently only supported by Bazaar, but could be supported by other version control systems as well. Implementations are required to raise the appropriate exceptions when an operation is requested that is not supported. This also makes life easier for API users who can rely on the implementation always allowing a particular feature to be requested but raising an exception when it is not supported, rather than requiring the API users to check for magic attributes to see what features are supported. """ def can_convert_format(self): """Return true if this controldir is one whose format we can convert from.""" return True def list_branches(self): """Return a sequence of all branches local to this control directory. """ try: return [self.open_branch()] except (errors.NotBranchError, errors.NoRepositoryPresent): return [] def is_control_filename(self, filename): """True if filename is the name of a path which is reserved for controldirs. :param filename: A filename within the root transport of this controldir. This is true IF and ONLY IF the filename is part of the namespace reserved for bzr control dirs. Currently this is the '.bzr' directory in the root of the root_transport. it is expected that plugins will need to extend this in the future - for instance to make bzr talk with svn working trees. """ raise NotImplementedError(self.is_control_filename) def needs_format_conversion(self, format=None): """Return true if this controldir needs convert_format run on it. For instance, if the repository format is out of date but the branch and working tree are not, this should return True. :param format: Optional parameter indicating a specific desired format we plan to arrive at. """ raise NotImplementedError(self.needs_format_conversion) def create_repository(self, shared=False): """Create a new repository in this control directory. :param shared: If a shared repository should be created :return: The newly created repository """ raise NotImplementedError(self.create_repository) def destroy_repository(self): """Destroy the repository in this ControlDir.""" raise NotImplementedError(self.destroy_repository) def create_branch(self, name=None, repository=None): """Create a branch in this ControlDir. :param name: Name of the colocated branch to create, None for the default branch. The controldirs format will control what branch format is created. For more control see BranchFormatXX.create(a_controldir). """ raise NotImplementedError(self.create_branch) def destroy_branch(self, name=None): """Destroy a branch in this ControlDir. :param name: Name of the branch to destroy, None for the default branch. """ raise NotImplementedError(self.destroy_branch) def create_workingtree(self, revision_id=None, from_branch=None, accelerator_tree=None, hardlink=False): """Create a working tree at this ControlDir. :param revision_id: create it as of this revision id. :param from_branch: override controldir branch (for lightweight checkouts) :param accelerator_tree: A tree which can be used for retrieving file contents more quickly than the revision tree, i.e. a workingtree. The revision tree will be used for cases where accelerator_tree's content is different. """ raise NotImplementedError(self.create_workingtree) def destroy_workingtree(self): """Destroy the working tree at this ControlDir. Formats that do not support this may raise UnsupportedOperation. """ raise NotImplementedError(self.destroy_workingtree) def destroy_workingtree_metadata(self): """Destroy the control files for the working tree at this ControlDir. The contents of working tree files are not affected. Formats that do not support this may raise UnsupportedOperation. """ raise NotImplementedError(self.destroy_workingtree_metadata) def get_branch_reference(self, name=None): """Return the referenced URL for the branch in this controldir. :param name: Optional colocated branch name :raises NotBranchError: If there is no Branch. :raises NoColocatedBranchSupport: If a branch name was specified but colocated branches are not supported. :return: The URL the branch in this controldir references if it is a reference branch, or None for regular branches. """ if name is not None: raise errors.NoColocatedBranchSupport(self) return None def open_branch(self, name=None, unsupported=False, ignore_fallbacks=False): """Open the branch object at this ControlDir if one is present. If unsupported is True, then no longer supported branch formats can still be opened. TODO: static convenience version of this? """ raise NotImplementedError(self.open_branch) def open_repository(self, _unsupported=False): """Open the repository object at this ControlDir if one is present. This will not follow the Branch object pointer - it's strictly a direct open facility. Most client code should use open_branch().repository to get at a repository. :param _unsupported: a private parameter, not part of the api. TODO: static convenience version of this? """ raise NotImplementedError(self.open_repository) def find_repository(self): """Find the repository that should be used. This does not require a branch as we use it to find the repo for new branches as well as to hook existing branches up to their repository. """ raise NotImplementedError(self.find_repository) def open_workingtree(self, _unsupported=False, recommend_upgrade=True, from_branch=None): """Open the workingtree object at this ControlDir if one is present. :param recommend_upgrade: Optional keyword parameter, when True (the default), emit through the ui module a recommendation that the user upgrade the working tree when the workingtree being opened is old (but still fully supported). :param from_branch: override controldir branch (for lightweight checkouts) """ raise NotImplementedError(self.open_workingtree) def has_branch(self, name=None): """Tell if this controldir contains a branch. Note: if you're going to open the branch, you should just go ahead and try, and not ask permission first. (This method just opens the branch and discards it, and that's somewhat expensive.) """ try: self.open_branch(name) return True except errors.NotBranchError: return False def has_workingtree(self): """Tell if this controldir contains a working tree. This will still raise an exception if the controldir has a workingtree that is remote & inaccessible. Note: if you're going to open the working tree, you should just go ahead and try, and not ask permission first. (This method just opens the workingtree and discards it, and that's somewhat expensive.) """ try: self.open_workingtree(recommend_upgrade=False) return True except errors.NoWorkingTree: return False def cloning_metadir(self, require_stacking=False): """Produce a metadir suitable for cloning or sprouting with. These operations may produce workingtrees (yes, even though they're "cloning" something that doesn't have a tree), so a viable workingtree format must be selected. :require_stacking: If True, non-stackable formats will be upgraded to similar stackable formats. :returns: a ControlDirFormat with all component formats either set appropriately or set to None if that component should not be created. """ raise NotImplementedError(self.cloning_metadir) def checkout_metadir(self): """Produce a metadir suitable for checkouts of this controldir.""" return self.cloning_metadir() def sprout(self, url, revision_id=None, force_new_repo=False, recurse='down', possible_transports=None, accelerator_tree=None, hardlink=False, stacked=False, source_branch=None, create_tree_if_local=True): """Create a copy of this controldir prepared for use as a new line of development. If url's last component does not exist, it will be created. Attributes related to the identity of the source branch like branch nickname will be cleaned, a working tree is created whether one existed before or not; and a local branch is always created. :param revision_id: if revision_id is not None, then the clone operation may tune itself to download less data. :param accelerator_tree: A tree which can be used for retrieving file contents more quickly than the revision tree, i.e. a workingtree. The revision tree will be used for cases where accelerator_tree's content is different. :param hardlink: If true, hard-link files from accelerator_tree, where possible. :param stacked: If true, create a stacked branch referring to the location of this control directory. :param create_tree_if_local: If true, a working-tree will be created when working locally. """ raise NotImplementedError(self.sprout) def push_branch(self, source, revision_id=None, overwrite=False, remember=False, create_prefix=False): """Push the source branch into this ControlDir.""" br_to = None # If we can open a branch, use its direct repository, otherwise see # if there is a repository without a branch. try: br_to = self.open_branch() except errors.NotBranchError: # Didn't find a branch, can we find a repository? repository_to = self.find_repository() else: # Found a branch, so we must have found a repository repository_to = br_to.repository push_result = PushResult() push_result.source_branch = source if br_to is None: # We have a repository but no branch, copy the revisions, and then # create a branch. if revision_id is None: # No revision supplied by the user, default to the branch # revision revision_id = source.last_revision() repository_to.fetch(source.repository, revision_id=revision_id) br_to = source.clone(self, revision_id=revision_id) if source.get_push_location() is None or remember: source.set_push_location(br_to.base) push_result.stacked_on = None push_result.branch_push_result = None push_result.old_revno = None push_result.old_revid = _mod_revision.NULL_REVISION push_result.target_branch = br_to push_result.master_branch = None push_result.workingtree_updated = False else: # We have successfully opened the branch, remember if necessary: if source.get_push_location() is None or remember: source.set_push_location(br_to.base) try: tree_to = self.open_workingtree() except errors.NotLocalUrl: push_result.branch_push_result = source.push(br_to, overwrite, stop_revision=revision_id) push_result.workingtree_updated = False except errors.NoWorkingTree: push_result.branch_push_result = source.push(br_to, overwrite, stop_revision=revision_id) push_result.workingtree_updated = None # Not applicable else: tree_to.lock_write() try: push_result.branch_push_result = source.push( tree_to.branch, overwrite, stop_revision=revision_id) tree_to.update() finally: tree_to.unlock() push_result.workingtree_updated = True push_result.old_revno = push_result.branch_push_result.old_revno push_result.old_revid = push_result.branch_push_result.old_revid push_result.target_branch = \ push_result.branch_push_result.target_branch return push_result def _get_tree_branch(self, name=None): """Return the branch and tree, if any, for this bzrdir. :param name: Name of colocated branch to open. Return None for tree if not present or inaccessible. Raise NotBranchError if no branch is present. :return: (tree, branch) """ try: tree = self.open_workingtree() except (errors.NoWorkingTree, errors.NotLocalUrl): tree = None branch = self.open_branch(name=name) else: if name is not None: branch = self.open_branch(name=name) else: branch = tree.branch return tree, branch def get_config(self): """Get configuration for this ControlDir.""" raise NotImplementedError(self.get_config) def check_conversion_target(self, target_format): """Check that a bzrdir as a whole can be converted to a new format.""" raise NotImplementedError(self.check_conversion_target) def clone(self, url, revision_id=None, force_new_repo=False, preserve_stacking=False): """Clone this bzrdir and its contents to url verbatim. :param url: The url create the clone at. If url's last component does not exist, it will be created. :param revision_id: The tip revision-id to use for any branch or working tree. If not None, then the clone operation may tune itself to download less data. :param force_new_repo: Do not use a shared repository for the target even if one is available. :param preserve_stacking: When cloning a stacked branch, stack the new branch on top of the other branch's stacked-on branch. """ return self.clone_on_transport(_mod_transport.get_transport(url), revision_id=revision_id, force_new_repo=force_new_repo, preserve_stacking=preserve_stacking) def clone_on_transport(self, transport, revision_id=None, force_new_repo=False, preserve_stacking=False, stacked_on=None, create_prefix=False, use_existing_dir=True, no_tree=False): """Clone this bzrdir and its contents to transport verbatim. :param transport: The transport for the location to produce the clone at. If the target directory does not exist, it will be created. :param revision_id: The tip revision-id to use for any branch or working tree. If not None, then the clone operation may tune itself to download less data. :param force_new_repo: Do not use a shared repository for the target, even if one is available. :param preserve_stacking: When cloning a stacked branch, stack the new branch on top of the other branch's stacked-on branch. :param create_prefix: Create any missing directories leading up to to_transport. :param use_existing_dir: Use an existing directory if one exists. :param no_tree: If set to true prevents creation of a working tree. """ raise NotImplementedError(self.clone_on_transport) class ControlComponentFormat(object): """A component that can live inside of a .bzr meta directory.""" upgrade_recommended = False def get_format_string(self): """Return the format of this format, if usable in meta directories.""" raise NotImplementedError(self.get_format_string) def get_format_description(self): """Return the short description for this format.""" raise NotImplementedError(self.get_format_description) def is_supported(self): """Is this format supported? Supported formats must be initializable and openable. Unsupported formats may not support initialization or committing or some other features depending on the reason for not being supported. """ return True def check_support_status(self, allow_unsupported, recommend_upgrade=True, basedir=None): """Give an error or warning on old formats. :param allow_unsupported: If true, allow opening formats that are strongly deprecated, and which may have limited functionality. :param recommend_upgrade: If true (default), warn the user through the ui object that they may wish to upgrade the object. """ if not allow_unsupported and not self.is_supported(): # see open_downlevel to open legacy branches. raise errors.UnsupportedFormatError(format=self) if recommend_upgrade and self.upgrade_recommended: ui.ui_factory.recommend_upgrade( self.get_format_description(), basedir) class ControlComponentFormatRegistry(registry.FormatRegistry): """A registry for control components (branch, workingtree, repository).""" def __init__(self, other_registry=None): super(ControlComponentFormatRegistry, self).__init__(other_registry) self._extra_formats = [] def register(self, format): """Register a new format.""" super(ControlComponentFormatRegistry, self).register( format.get_format_string(), format) def remove(self, format): """Remove a registered format.""" super(ControlComponentFormatRegistry, self).remove( format.get_format_string()) def register_extra(self, format): """Register a format that can not be used in a metadir. This is mainly useful to allow custom repository formats, such as older Bazaar formats and foreign formats, to be tested. """ self._extra_formats.append(registry._ObjectGetter(format)) def remove_extra(self, format): """Remove an extra format. """ self._extra_formats.remove(registry._ObjectGetter(format)) def register_extra_lazy(self, module_name, member_name): """Register a format lazily. """ self._extra_formats.append( registry._LazyObjectGetter(module_name, member_name)) def _get_extra(self): """Return all "extra" formats, not usable in meta directories.""" result = [] for getter in self._extra_formats: f = getter.get_obj() if callable(f): f = f() result.append(f) return result def _get_all(self): """Return all formats, even those not usable in metadirs. """ result = [] for name in self.keys(): fmt = self.get(name) if callable(fmt): fmt = fmt() result.append(fmt) return result + self._get_extra() def _get_all_modules(self): """Return a set of the modules providing objects.""" modules = set() for name in self.keys(): modules.add(self._get_module(name)) for getter in self._extra_formats: modules.add(getter.get_module()) return modules class Converter(object): """Converts a disk format object from one format to another.""" def convert(self, to_convert, pb): """Perform the conversion of to_convert, giving feedback via pb. :param to_convert: The disk object to convert. :param pb: a progress bar to use for progress information. """ def step(self, message): """Update the pb by a step.""" self.count +=1 self.pb.update(message, self.count, self.total) class ControlDirFormat(object): """An encapsulation of the initialization and open routines for a format. Formats provide three things: * An initialization routine, * a format string, * an open routine. Formats are placed in a dict by their format string for reference during controldir opening. These should be subclasses of ControlDirFormat for consistency. Once a format is deprecated, just deprecate the initialize and open methods on the format class. Do not deprecate the object, as the object will be created every system load. :cvar colocated_branches: Whether this formats supports colocated branches. :cvar supports_workingtrees: This control directory can co-exist with a working tree. """ _default_format = None """The default format used for new control directories.""" _server_probers = [] """The registered server format probers, e.g. RemoteBzrProber. This is a list of Prober-derived classes. """ _probers = [] """The registered format probers, e.g. BzrProber. This is a list of Prober-derived classes. """ colocated_branches = False """Whether co-located branches are supported for this control dir format. """ supports_workingtrees = True """Whether working trees can exist in control directories of this format. """ fixed_components = False """Whether components can not change format independent of the control dir. """ upgrade_recommended = False """Whether an upgrade from this format is recommended.""" def get_format_description(self): """Return the short description for this format.""" raise NotImplementedError(self.get_format_description) def get_converter(self, format=None): """Return the converter to use to convert controldirs needing converts. This returns a bzrlib.controldir.Converter object. This should return the best upgrader to step this format towards the current default format. In the case of plugins we can/should provide some means for them to extend the range of returnable converters. :param format: Optional format to override the default format of the library. """ raise NotImplementedError(self.get_converter) def is_supported(self): """Is this format supported? Supported formats must be initializable and openable. Unsupported formats may not support initialization or committing or some other features depending on the reason for not being supported. """ return True def check_support_status(self, allow_unsupported, recommend_upgrade=True, basedir=None): """Give an error or warning on old formats. :param allow_unsupported: If true, allow opening formats that are strongly deprecated, and which may have limited functionality. :param recommend_upgrade: If true (default), warn the user through the ui object that they may wish to upgrade the object. """ if not allow_unsupported and not self.is_supported(): # see open_downlevel to open legacy branches. raise errors.UnsupportedFormatError(format=self) if recommend_upgrade and self.upgrade_recommended: ui.ui_factory.recommend_upgrade( self.get_format_description(), basedir) def same_model(self, target_format): return (self.repository_format.rich_root_data == target_format.rich_root_data) @classmethod def register_format(klass, format): """Register a format that does not use '.bzr' for its control dir. """ raise errors.BzrError("ControlDirFormat.register_format() has been " "removed in Bazaar 2.4. Please upgrade your plugins.") @classmethod def register_prober(klass, prober): """Register a prober that can look for a control dir. """ klass._probers.append(prober) @classmethod def unregister_prober(klass, prober): """Unregister a prober. """ klass._probers.remove(prober) @classmethod def register_server_prober(klass, prober): """Register a control format prober for client-server environments. These probers will be used before ones registered with register_prober. This gives implementations that decide to the chance to grab it before anything looks at the contents of the format file. """ klass._server_probers.append(prober) def __str__(self): # Trim the newline return self.get_format_description().rstrip() @classmethod def known_formats(klass): """Return all the known formats. """ result = set() for prober_kls in klass._probers + klass._server_probers: result.update(prober_kls.known_formats()) return result @classmethod def find_format(klass, transport, _server_formats=True): """Return the format present at transport.""" if _server_formats: _probers = klass._server_probers + klass._probers else: _probers = klass._probers for prober_kls in _probers: prober = prober_kls() try: return prober.probe_transport(transport) except errors.NotBranchError: # this format does not find a control dir here. pass raise errors.NotBranchError(path=transport.base) def initialize(self, url, possible_transports=None): """Create a control dir at this url and return an opened copy. While not deprecated, this method is very specific and its use will lead to many round trips to setup a working environment. See initialize_on_transport_ex for a [nearly] all-in-one method. Subclasses should typically override initialize_on_transport instead of this method. """ return self.initialize_on_transport( _mod_transport.get_transport(url, possible_transports)) def initialize_on_transport(self, transport): """Initialize a new controldir in the base directory of a Transport.""" raise NotImplementedError(self.initialize_on_transport) def initialize_on_transport_ex(self, transport, use_existing_dir=False, create_prefix=False, force_new_repo=False, stacked_on=None, stack_on_pwd=None, repo_format_name=None, make_working_trees=None, shared_repo=False, vfs_only=False): """Create this format on transport. The directory to initialize will be created. :param force_new_repo: Do not use a shared repository for the target, even if one is available. :param create_prefix: Create any missing directories leading up to to_transport. :param use_existing_dir: Use an existing directory if one exists. :param stacked_on: A url to stack any created branch on, None to follow any target stacking policy. :param stack_on_pwd: If stack_on is relative, the location it is relative to. :param repo_format_name: If non-None, a repository will be made-or-found. Should none be found, or if force_new_repo is True the repo_format_name is used to select the format of repository to create. :param make_working_trees: Control the setting of make_working_trees for a new shared repository when one is made. None to use whatever default the format has. :param shared_repo: Control whether made repositories are shared or not. :param vfs_only: If True do not attempt to use a smart server :return: repo, controldir, require_stacking, repository_policy. repo is None if none was created or found, controldir is always valid. require_stacking is the result of examining the stacked_on parameter and any stacking policy found for the target. """ raise NotImplementedError(self.initialize_on_transport_ex) def network_name(self): """A simple byte string uniquely identifying this format for RPC calls. Bzr control formats use this disk format string to identify the format over the wire. Its possible that other control formats have more complex detection requirements, so we permit them to use any unique and immutable string they desire. """ raise NotImplementedError(self.network_name) def open(self, transport, _found=False): """Return an instance of this format for the dir transport points at. """ raise NotImplementedError(self.open) @classmethod def _set_default_format(klass, format): """Set default format (for testing behavior of defaults only)""" klass._default_format = format @classmethod def get_default_format(klass): """Return the current default format.""" return klass._default_format class Prober(object): """Abstract class that can be used to detect a particular kind of control directory. At the moment this just contains a single method to probe a particular transport, but it may be extended in the future to e.g. avoid multiple levels of probing for Subversion repositories. See BzrProber and RemoteBzrProber in bzrlib.bzrdir for the probers that detect .bzr/ directories and Bazaar smart servers, respectively. Probers should be registered using the register_server_prober or register_prober methods on ControlDirFormat. """ def probe_transport(self, transport): """Return the controldir style format present in a directory. :raise UnknownFormatError: If a control dir was found but is in an unknown format. :raise NotBranchError: If no control directory was found. :return: A ControlDirFormat instance. """ raise NotImplementedError(self.probe_transport) @classmethod def known_formats(cls): """Return the control dir formats known by this prober. Multiple probers can return the same formats, so this should return a set. :return: A set of known formats. """ raise NotImplementedError(cls.known_formats) class ControlDirFormatInfo(object): def __init__(self, native, deprecated, hidden, experimental): self.deprecated = deprecated self.native = native self.hidden = hidden self.experimental = experimental class ControlDirFormatRegistry(registry.Registry): """Registry of user-selectable ControlDir subformats. Differs from ControlDirFormat._formats in that it provides sub-formats, e.g. BzrDirMeta1 with weave repository. Also, it's more user-oriented. """ def __init__(self): """Create a ControlDirFormatRegistry.""" self._aliases = set() self._registration_order = list() super(ControlDirFormatRegistry, self).__init__() def aliases(self): """Return a set of the format names which are aliases.""" return frozenset(self._aliases) def register(self, key, factory, help, native=True, deprecated=False, hidden=False, experimental=False, alias=False): """Register a ControlDirFormat factory. The factory must be a callable that takes one parameter: the key. It must produce an instance of the ControlDirFormat when called. This function mainly exists to prevent the info object from being supplied directly. """ registry.Registry.register(self, key, factory, help, ControlDirFormatInfo(native, deprecated, hidden, experimental)) if alias: self._aliases.add(key) self._registration_order.append(key) def register_lazy(self, key, module_name, member_name, help, native=True, deprecated=False, hidden=False, experimental=False, alias=False): registry.Registry.register_lazy(self, key, module_name, member_name, help, ControlDirFormatInfo(native, deprecated, hidden, experimental)) if alias: self._aliases.add(key) self._registration_order.append(key) def set_default(self, key): """Set the 'default' key to be a clone of the supplied key. This method must be called once and only once. """ registry.Registry.register(self, 'default', self.get(key), self.get_help(key), info=self.get_info(key)) self._aliases.add('default') def set_default_repository(self, key): """Set the FormatRegistry default and Repository default. This is a transitional method while Repository.set_default_format is deprecated. """ if 'default' in self: self.remove('default') self.set_default(key) format = self.get('default')() def make_bzrdir(self, key): return self.get(key)() def help_topic(self, topic): output = "" default_realkey = None default_help = self.get_help('default') help_pairs = [] for key in self._registration_order: if key == 'default': continue help = self.get_help(key) if help == default_help: default_realkey = key else: help_pairs.append((key, help)) def wrapped(key, help, info): if info.native: help = '(native) ' + help return ':%s:\n%s\n\n' % (key, textwrap.fill(help, initial_indent=' ', subsequent_indent=' ', break_long_words=False)) if default_realkey is not None: output += wrapped(default_realkey, '(default) %s' % default_help, self.get_info('default')) deprecated_pairs = [] experimental_pairs = [] for key, help in help_pairs: info = self.get_info(key) if info.hidden: continue elif info.deprecated: deprecated_pairs.append((key, help)) elif info.experimental: experimental_pairs.append((key, help)) else: output += wrapped(key, help, info) output += "\nSee :doc:`formats-help` for more about storage formats." other_output = "" if len(experimental_pairs) > 0: other_output += "Experimental formats are shown below.\n\n" for key, help in experimental_pairs: info = self.get_info(key) other_output += wrapped(key, help, info) else: other_output += \ "No experimental formats are available.\n\n" if len(deprecated_pairs) > 0: other_output += "\nDeprecated formats are shown below.\n\n" for key, help in deprecated_pairs: info = self.get_info(key) other_output += wrapped(key, help, info) else: other_output += \ "\nNo deprecated formats are available.\n\n" other_output += \ "\nSee :doc:`formats-help` for more about storage formats." if topic == 'other-formats': return other_output else: return output # Please register new formats after old formats so that formats # appear in chronological order and format descriptions can build # on previous ones. format_registry = ControlDirFormatRegistry() network_format_registry = registry.FormatRegistry() """Registry of formats indexed by their network name. The network name for a ControlDirFormat is an identifier that can be used when referring to formats with smart server operations. See ControlDirFormat.network_name() for more detail. """