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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from bzrlib import (
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help_txt = """A parsed revision specification.
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A revision specification is a string, which may be unambiguous about
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what it represents by giving a prefix like 'date:' or 'revid:' etc,
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or it may have no prefix, in which case it's tried against several
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specifier types in sequence to determine what the user meant.
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A revision specification can be an integer, in which case it is
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assumed to be a revno (though this will translate negative values
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into positive ones); or it can be a string, in which case it is
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parsed for something like 'date:' or 'revid:' etc.
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Revision specs are an UI element, and they have been moved out
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of the branch class to leave "back-end" classes unaware of such
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wants_revision_history = True
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dwim_catchable_exceptions = (errors.InvalidRevisionSpec,)
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"""Exceptions that RevisionSpec_dwim._match_on will catch.
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If the revspec is part of ``dwim_revspecs``, it may be tried with an
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invalid revspec and raises some exception. The exceptions mentioned here
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will not be reported to the user but simply ignored without stopping the
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def __new__(cls, spec, _internal=False):
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return object.__new__(cls, spec, _internal=_internal)
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symbol_versioning.warn('Creating a RevisionSpec directly has'
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' been deprecated in version 0.11. Use'
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' RevisionSpec.from_string()'
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DeprecationWarning, stacklevel=2)
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return RevisionSpec.from_string(spec)
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def from_string(spec):
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return RevisionSpec(None, _internal=True)
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match = revspec_registry.get_prefix(spec)
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if match is not None:
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spectype, specsuffix = match
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trace.mutter('Returning RevisionSpec %s for %s',
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spectype.__name__, spec)
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return spectype(spec, _internal=True)
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assert isinstance(spec, basestring), \
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"You should only supply strings not %s" % (type(spec),)
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for spectype in SPEC_TYPES:
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if spec.startswith(spectype.prefix):
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trace.mutter('Returning RevisionSpec %s for %s',
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spectype.__name__, spec)
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return spectype(spec, _internal=True)
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for spectype in SPEC_TYPES:
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if spec.startswith(spectype.prefix):
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trace.mutter('Returning RevisionSpec %s for %s',
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spectype.__name__, spec)
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return spectype(spec, _internal=True)
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# Otherwise treat it as a DWIM, build the RevisionSpec object and
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# wait for _match_on to be called.
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return RevisionSpec_dwim(spec, _internal=True)
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# RevisionSpec_revno is special cased, because it is the only
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# one that directly handles plain integers
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# TODO: This should not be special cased rather it should be
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# a method invocation on spectype.canparse()
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if _revno_regex is None:
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_revno_regex = re.compile(r'^(?:(\d+(\.\d+)*)|-\d+)(:.*)?$')
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if _revno_regex.match(spec) is not None:
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return RevisionSpec_revno(spec, _internal=True)
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raise errors.NoSuchRevisionSpec(spec)
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def __init__(self, spec, _internal=False):
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"""Create a RevisionSpec referring to the Null revision.
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def _match_on(self, branch, revs):
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trace.mutter('Returning RevisionSpec._match_on: None')
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return RevisionInfo(branch, None, None)
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return RevisionInfo(branch, 0, None)
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def _match_on_and_check(self, branch, revs):
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info = self._match_on(branch, revs)
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elif info == (None, None):
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# special case - nothing supplied
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elif info == (0, None):
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# special case - the empty tree
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elif self.prefix:
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raise errors.InvalidRevisionSpec(self.user_spec, branch)
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# will do what you expect.
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in_store = in_history
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in_branch = in_store
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def as_revision_id(self, context_branch):
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"""Return just the revision_id for this revisions spec.
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Some revision specs require a context_branch to be able to determine
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their value. Not all specs will make use of it.
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return self._as_revision_id(context_branch)
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def _as_revision_id(self, context_branch):
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"""Implementation of as_revision_id()
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Classes should override this function to provide appropriate
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functionality. The default is to just call '.in_history().rev_id'
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return self.in_history(context_branch).rev_id
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def as_tree(self, context_branch):
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"""Return the tree object for this revisions spec.
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Some revision specs require a context_branch to be able to determine
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the revision id and access the repository. Not all specs will make
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return self._as_tree(context_branch)
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def _as_tree(self, context_branch):
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"""Implementation of as_tree().
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Classes should override this function to provide appropriate
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functionality. The default is to just call '.as_revision_id()'
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and get the revision tree from context_branch's repository.
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revision_id = self.as_revision_id(context_branch)
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return context_branch.repository.revision_tree(revision_id)
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def __repr__(self):
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# this is mostly for helping with testing
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return '<%s %s>' % (self.__class__.__name__,
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def needs_branch(self):
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"""Whether this revision spec needs a branch.
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class RevisionSpec_dwim(RevisionSpec):
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"""Provides a DWIMish revision specifier lookup.
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Note that this does not go in the revspec_registry because by definition
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there is no prefix to identify it. It's solely called from
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RevisionSpec.from_string() because the DWIMification happen when _match_on
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is called so the string describing the revision is kept here until needed.
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# We don't need to build the revision history ourself, that's delegated to
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# each revspec we try.
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wants_revision_history = False
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def _try_spectype(self, rstype, branch):
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rs = rstype(self.spec, _internal=True)
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# Hit in_history to find out if it exists, or we need to try the
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return rs.in_history(branch)
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def _match_on(self, branch, revs):
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"""Run the lookup and see what we can get."""
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# First, see if it's a revno
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if _revno_regex is None:
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_revno_regex = re.compile(r'^(?:(\d+(\.\d+)*)|-\d+)(:.*)?$')
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if _revno_regex.match(self.spec) is not None:
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return self._try_spectype(RevisionSpec_revno, branch)
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except RevisionSpec_revno.dwim_catchable_exceptions:
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# Next see what has been registered
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for rs_class in dwim_revspecs:
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return self._try_spectype(rs_class, branch)
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except rs_class.dwim_catchable_exceptions:
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# Well, I dunno what it is. Note that we don't try to keep track of the
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# first of last exception raised during the DWIM tries as none seems
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raise errors.InvalidRevisionSpec(self.spec, branch)
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class RevisionSpec_revno(RevisionSpec):
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"""Selects a revision using a number."""
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help_txt = """Selects a revision using a number.
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Use an integer to specify a revision in the history of the branch.
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Optionally a branch can be specified. A negative number will count
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from the end of the branch (-1 is the last revision, -2 the previous
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one). If the negative number is larger than the branch's history, the
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first revision is returned.
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revno:1 -> return the first revision of this branch
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Optionally a branch can be specified. The 'revno:' prefix is optional.
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A negative number will count from the end of the branch (-1 is the
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last revision, -2 the previous one). If the negative number is larger
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than the branch's history, the first revision is returned.
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revno:1 -> return the first revision
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revno:3:/path/to/branch -> return the 3rd revision of
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the branch '/path/to/branch'
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revno:-1 -> The last revision in a branch.
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your history is very long.
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prefix = 'revno:'
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wants_revision_history = False
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def _match_on(self, branch, revs):
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"""Lookup a revision by revision number"""
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branch, revno, revision_id = self._lookup(branch, revs)
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return RevisionInfo(branch, revno, revision_id)
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def _lookup(self, branch, revs_or_none):
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loc = self.spec.find(':')
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revno_spec = self.spec
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# the branch object.
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from bzrlib.branch import Branch
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branch = Branch.open(branch_spec)
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# Need to use a new revision history
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# because we are using a specific branch
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revs = branch.revision_history()
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revision_id = branch.dotted_revno_to_revision_id(match_revno,
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except errors.NoSuchRevision:
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raise errors.InvalidRevisionSpec(self.user_spec, branch)
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revision_id_to_revno = branch.get_revision_id_to_revno_map()
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revisions = [revision_id for revision_id, revno
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in revision_id_to_revno.iteritems()
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if revno == match_revno]
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if len(revisions) != 1:
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return RevisionInfo(branch, None, None)
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# there is no traditional 'revno' for dotted-decimal revnos.
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# so for API compatability we return None.
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return branch, None, revision_id
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return RevisionInfo(branch, None, revisions[0])
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last_revno, last_revision_id = branch.last_revision_info()
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# if get_rev_id supported negative revnos, there would not be a
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# need for this special case.
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if (-revno) >= last_revno:
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if (-revno) >= len(revs):
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revno = last_revno + revno + 1
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revno = len(revs) + revno + 1
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revision_id = branch.get_rev_id(revno, revs_or_none)
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revision_id = branch.get_rev_id(revno, revs)
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except errors.NoSuchRevision:
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raise errors.InvalidRevisionSpec(self.user_spec, branch)
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return branch, revno, revision_id
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def _as_revision_id(self, context_branch):
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# We would have the revno here, but we don't really care
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branch, revno, revision_id = self._lookup(context_branch, None)
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return RevisionInfo(branch, revno, revision_id)
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def needs_branch(self):
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return self.spec.find(':') == -1
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help_txt = """Selects a revision using the revision id.
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Supply a specific revision id, that can be used to specify any
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revision id in the ancestry of the branch.
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revision id in the ancestry of the branch.
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Including merges, and pending merges.
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revid:aaaa@bbbb-123456789 -> Select revision 'aaaa@bbbb-123456789'
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prefix = 'revid:'
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def _match_on(self, branch, revs):
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revision_id = osutils.safe_revision_id(self.spec, warn=False)
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return RevisionInfo.from_revision_id(branch, revision_id, revs)
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def _as_revision_id(self, context_branch):
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return osutils.safe_revision_id(self.spec, warn=False)
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SPEC_TYPES.append(RevisionSpec_revid)
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class RevisionSpec_last(RevisionSpec):
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Supply a positive number to get the nth revision from the end.
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This is the same as supplying negative numbers to the 'revno:' spec.
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last:1 -> return the last revision
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last:3 -> return the revision 2 before the end.
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def _match_on(self, branch, revs):
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revno, revision_id = self._revno_and_revision_id(branch, revs)
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return RevisionInfo(branch, revno, revision_id)
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def _revno_and_revision_id(self, context_branch, revs_or_none):
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last_revno, last_revision_id = context_branch.last_revision_info()
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if self.spec == '':
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raise errors.NoCommits(context_branch)
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return last_revno, last_revision_id
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raise errors.NoCommits(branch)
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return RevisionInfo(branch, len(revs), revs[-1])
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offset = int(self.spec)
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except ValueError, e:
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raise errors.InvalidRevisionSpec(self.user_spec, context_branch, e)
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raise errors.InvalidRevisionSpec(self.user_spec, branch, e)
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raise errors.InvalidRevisionSpec(self.user_spec, context_branch,
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raise errors.InvalidRevisionSpec(self.user_spec, branch,
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'you must supply a positive value')
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revno = last_revno - offset + 1
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revno = len(revs) - offset + 1
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revision_id = context_branch.get_rev_id(revno, revs_or_none)
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revision_id = branch.get_rev_id(revno, revs)
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except errors.NoSuchRevision:
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raise errors.InvalidRevisionSpec(self.user_spec, context_branch)
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return revno, revision_id
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def _as_revision_id(self, context_branch):
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# We compute the revno as part of the process, but we don't really care
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revno, revision_id = self._revno_and_revision_id(context_branch, None)
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raise errors.InvalidRevisionSpec(self.user_spec, branch)
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return RevisionInfo(branch, revno, revision_id)
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SPEC_TYPES.append(RevisionSpec_last)
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class RevisionSpec_before(RevisionSpec):
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help_txt = """Selects the parent of the revision specified.
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Supply any revision spec to return the parent of that revision. This is
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mostly useful when inspecting revisions that are not in the revision history
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Supply any revision spec to return the parent of that revision.
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It is an error to request the parent of the null revision (before:0).
433
This is mostly useful when inspecting revisions that are not in the
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revision history of a branch.
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before:1913 -> Return the parent of revno 1913 (revno 1912)
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before:revid:aaaa@bbbb-1234567890 -> return the parent of revision
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439
aaaa@bbbb-1234567890
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bzr diff -r before:1913..1913
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-> Find the changes between revision 1913 and its parent (1912).
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(What changes did revision 1913 introduce).
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This is equivalent to: bzr diff -c 1913
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bzr diff -r before:revid:aaaa..revid:aaaa
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-> Find the changes between revision 'aaaa' and its parent.
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(what changes did 'aaaa' introduce)
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prefix = 'before:'
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def _match_on(self, branch, revs):
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r = RevisionSpec.from_string(self.spec)._match_on(branch, revs)
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return RevisionInfo(branch, revno, revision_id)
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def _as_revision_id(self, context_branch):
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base_revspec = RevisionSpec.from_string(self.spec)
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base_revision_id = base_revspec.as_revision_id(context_branch)
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if base_revision_id == revision.NULL_REVISION:
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raise errors.InvalidRevisionSpec(self.user_spec, context_branch,
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'cannot go before the null: revision')
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context_repo = context_branch.repository
582
context_repo.lock_read()
584
parent_map = context_repo.get_parent_map([base_revision_id])
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context_repo.unlock()
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if base_revision_id not in parent_map:
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# Ghost, or unknown revision id
589
raise errors.InvalidRevisionSpec(self.user_spec, context_branch,
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'cannot find the matching revision')
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parents = parent_map[base_revision_id]
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raise errors.InvalidRevisionSpec(self.user_spec, context_branch,
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'No parents for revision.')
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SPEC_TYPES.append(RevisionSpec_before)
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class RevisionSpec_tag(RevisionSpec):
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Matches the first entry after a given date (either at midnight or
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at a specified time).
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One way to display all the changes since yesterday would be::
652
bzr log -r date:yesterday..
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One way to display all the changes since yesterday would be:
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bzr log -r date:yesterday..-1
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date:yesterday -> select the first revision since yesterday
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529
date:2006-08-14,17:10:14 -> select the first revision after
658
530
August 14th, 2006 at 5:10pm.
661
533
_date_re = re.compile(
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r'(?P<date>(?P<year>\d\d\d\d)-(?P<month>\d\d)-(?P<day>\d\d))?'
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trace.mutter('matching ancestor: on: %s, %s', self.spec, branch)
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623
return self._find_revision_info(branch, self.spec)
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def _as_revision_id(self, context_branch):
754
return self._find_revision_id(context_branch, self.spec)
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626
def _find_revision_info(branch, other_location):
758
revision_id = RevisionSpec_ancestor._find_revision_id(branch,
627
from bzrlib.branch import Branch
629
other_branch = Branch.open(other_location)
630
revision_a = branch.last_revision()
631
revision_b = other_branch.last_revision()
632
for r, b in ((revision_a, branch), (revision_b, other_branch)):
633
if r in (None, revision.NULL_REVISION):
634
raise errors.NoCommits(b)
635
revision_source = revision.MultipleRevisionSources(
636
branch.repository, other_branch.repository)
637
rev_id = revision.common_ancestor(revision_a, revision_b,
761
revno = branch.revision_id_to_revno(revision_id)
640
revno = branch.revision_id_to_revno(rev_id)
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except errors.NoSuchRevision:
764
return RevisionInfo(branch, revno, revision_id)
767
def _find_revision_id(branch, other_location):
768
from bzrlib.branch import Branch
772
revision_a = revision.ensure_null(branch.last_revision())
773
if revision_a == revision.NULL_REVISION:
774
raise errors.NoCommits(branch)
775
if other_location == '':
776
other_location = branch.get_parent()
777
other_branch = Branch.open(other_location)
778
other_branch.lock_read()
780
revision_b = revision.ensure_null(other_branch.last_revision())
781
if revision_b == revision.NULL_REVISION:
782
raise errors.NoCommits(other_branch)
783
graph = branch.repository.get_graph(other_branch.repository)
784
rev_id = graph.find_unique_lca(revision_a, revision_b)
786
other_branch.unlock()
787
if rev_id == revision.NULL_REVISION:
788
raise errors.NoCommonAncestor(revision_a, revision_b)
643
return RevisionInfo(branch, revno, rev_id)
646
SPEC_TYPES.append(RevisionSpec_ancestor)
796
649
class RevisionSpec_branch(RevisionSpec):
820
671
except errors.NoSuchRevision:
822
673
return RevisionInfo(branch, revno, revision_b)
824
def _as_revision_id(self, context_branch):
825
from bzrlib.branch import Branch
826
other_branch = Branch.open(self.spec)
827
last_revision = other_branch.last_revision()
828
last_revision = revision.ensure_null(last_revision)
829
context_branch.fetch(other_branch, last_revision)
830
if last_revision == revision.NULL_REVISION:
831
raise errors.NoCommits(other_branch)
834
def _as_tree(self, context_branch):
835
from bzrlib.branch import Branch
836
other_branch = Branch.open(self.spec)
837
last_revision = other_branch.last_revision()
838
last_revision = revision.ensure_null(last_revision)
839
if last_revision == revision.NULL_REVISION:
840
raise errors.NoCommits(other_branch)
841
return other_branch.repository.revision_tree(last_revision)
675
SPEC_TYPES.append(RevisionSpec_branch)
845
678
class RevisionSpec_submit(RevisionSpec_ancestor):
850
683
Diffing against this shows all the changes that were made in this branch,
851
684
and is a good predictor of what merge will do. The submit branch is
852
used by the bundle and merge directive commands. If no submit branch
685
used by the bundle and merge directive comands. If no submit branch
853
686
is specified, the parent branch is used instead.
855
688
The common ancestor is the last revision that existed in both
856
689
branches. Usually this is the branch point, but it could also be
857
690
a revision that was merged.
861
693
$ bzr diff -r submit:
864
696
prefix = 'submit:'
866
def _get_submit_location(self, branch):
698
def _match_on(self, branch, revs):
699
trace.mutter('matching ancestor: on: %s, %s', self.spec, branch)
867
700
submit_location = branch.get_submit_branch()
868
701
location_type = 'submit branch'
869
702
if submit_location is None:
872
705
if submit_location is None:
873
706
raise errors.NoSubmitBranch(branch)
874
707
trace.note('Using %s %s', location_type, submit_location)
875
return submit_location
877
def _match_on(self, branch, revs):
878
trace.mutter('matching ancestor: on: %s, %s', self.spec, branch)
879
return self._find_revision_info(branch,
880
self._get_submit_location(branch))
882
def _as_revision_id(self, context_branch):
883
return self._find_revision_id(context_branch,
884
self._get_submit_location(context_branch))
887
# The order in which we want to DWIM a revision spec without any prefix.
888
# revno is always tried first and isn't listed here, this is used by
889
# RevisionSpec_dwim._match_on
891
RevisionSpec_tag, # Let's try for a tag
892
RevisionSpec_revid, # Maybe it's a revid?
893
RevisionSpec_date, # Perhaps a date?
894
RevisionSpec_branch, # OK, last try, maybe it's a branch
898
revspec_registry = registry.Registry()
899
def _register_revspec(revspec):
900
revspec_registry.register(revspec.prefix, revspec)
902
_register_revspec(RevisionSpec_revno)
903
_register_revspec(RevisionSpec_revid)
904
_register_revspec(RevisionSpec_last)
905
_register_revspec(RevisionSpec_before)
906
_register_revspec(RevisionSpec_tag)
907
_register_revspec(RevisionSpec_date)
908
_register_revspec(RevisionSpec_ancestor)
909
_register_revspec(RevisionSpec_branch)
910
_register_revspec(RevisionSpec_submit)
912
# classes in this list should have a "prefix" attribute, against which
913
# string specs are matched
914
SPEC_TYPES = symbol_versioning.deprecated_list(
915
symbol_versioning.deprecated_in((1, 12, 0)), "SPEC_TYPES", [])
708
return self._find_revision_info(branch, submit_location)
711
SPEC_TYPES.append(RevisionSpec_submit)
added
removed
bzrlib/revisionspec.py
