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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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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""Testament - a summary of a revision for signing.
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A testament can be defined as "something that serves as tangible
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A testament can be defined as "something that serves as tangible
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proof or evidence." In bzr we use them to allow people to certify
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particular revisions as authentic.
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particular revisions as authentic.
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The goal is that if two revisions are semantically equal, then they will
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have a byte-for-byte equal testament. We can define different versions of
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# XXX: At the moment, clients trust that the graph described in a weave
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# is accurate, but that's not covered by the testament. Perhaps the best
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# fix is when verifying a revision to make sure that every file mentioned
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# fix is when verifying a revision to make sure that every file mentioned
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# in the revision has compatible ancestry links.
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# TODO: perhaps write timestamp in a more readable form
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# revisions can be serialized.
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from copy import copy
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from bzrlib.osutils import (
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from bzrlib.tree import Tree
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from bzrlib.osutils import contains_whitespace, contains_linebreaks
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class Testament(object):
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"""Reduced summary of a revision.
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- produced from a revision
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- written to a stream
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long_header = 'bazaar-ng testament version 1\n'
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short_header = 'bazaar-ng testament short form 1\n'
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def from_revision(cls, repository, revision_id):
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"""Produce a new testament from a historical revision."""
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"""Produce a new testament from a historical revision"""
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rev = repository.get_revision(revision_id)
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tree = repository.revision_tree(revision_id)
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return cls(rev, tree)
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def from_revision_tree(cls, tree):
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"""Produce a new testament from a revision tree."""
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rev = tree._repository.get_revision(tree.get_revision_id())
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return cls(rev, tree)
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def __init__(self, rev, tree):
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"""Create a new testament for rev using tree."""
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inventory = repository.get_inventory(revision_id)
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return cls(rev, inventory)
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def __init__(self, rev, inventory):
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"""Create a new testament for rev using inventory."""
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self.revision_id = rev.revision_id
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self.committer = rev.committer
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self.timezone = rev.timezone or 0
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self.timestamp = rev.timestamp
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self.message = rev.message
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self.parent_ids = rev.parent_ids[:]
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if not isinstance(tree, Tree):
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raise TypeError("As of bzr 2.4 Testament.__init__() takes a "
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"Revision and a Tree.")
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self.inventory = inventory
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self.revprops = copy(rev.properties)
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if contains_whitespace(self.revision_id):
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raise ValueError(self.revision_id)
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return [line.encode('utf-8') for line in r]
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def _get_entries(self):
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return ((path, ie) for (path, versioned, kind, file_id, ie) in
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self.tree.list_files(include_root=self.include_root))
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entries = self.inventory.iter_entries()
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def _escape_path(self, path):
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if contains_linebreaks(path):
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def as_short_text(self):
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"""Return short digest-based testament."""
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return (self.short_header +
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return (self.short_header +
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'revision-id: %s\n'
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% (self.revision_id, self.as_sha1()))
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long_header = 'bazaar-ng testament version 2.1\n'
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short_header = 'bazaar-ng testament short form 2.1\n'
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def _entry_to_line(self, path, ie):
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l = Testament._entry_to_line(self, path, ie)[:-1]
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l += ' ' + ie.revision
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class StrictTestament3(StrictTestament):
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"""This testament format is for use as a checksum in bundle format 0.9+
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It differs from StrictTestament by including data about the tree root.
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long_header = 'bazaar testament version 3 strict\n'
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short_header = 'bazaar testament short form 3 strict\n'
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def _get_entries(self):
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return self.inventory.iter_entries()
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def _escape_path(self, path):
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if contains_linebreaks(path):