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"""Code to show logs of changes.
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Various flavors of log can be produced:
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* for one file, or the whole tree, and (not done yet) for
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files in a given directory
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* in "verbose" mode with a description of what changed from one
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* with file-ids and revision-ids shown
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Logs are actually written out through an abstract LogFormatter
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interface, which allows for different preferred formats. Plugins can
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Logs can be produced in either forward (oldest->newest) or reverse
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(newest->oldest) order.
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Logs can be filtered to show only revisions matching a particular
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search string, or within a particular range of revisions. The range
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can be given as date/times, which are reduced to revisions before
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In verbose mode we show a summary of what changed in each particular
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revision. Note that this is the delta for changes in that revision
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relative to its mainline parent, not the delta relative to the last
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logged revision. So for example if you ask for a verbose log of
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changes touching hello.c you will get a list of those revisions also
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listing other things that were changed in the same revision, but not
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all the changes since the previous revision that touched hello.c.
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from bzrlib.tree import EmptyTree
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from bzrlib.delta import compare_trees
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from bzrlib.trace import mutter
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from bzrlib.errors import InvalidRevisionNumber
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def find_touching_revisions(branch, file_id):
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"""Yield a description of revisions which affect the file_id.
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def _enumerate_history(branch):
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for rev_id in branch.revision_history():
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rh.append((revno, rev_id))
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def show_log(branch,
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specific_fileid=None,
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show_timezone='original',
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"""Write out human-readable log of commits to this branch.
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LogFormatter object to show the output.
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If true, list only the commits affecting the specified
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file, rather than all commits.
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'original' (committer's timezone),
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'utc' (universal time), or
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'local' (local user's timezone)
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If true show added/changed/deleted/renamed files.
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'reverse' (default) is latest to earliest;
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'forward' is earliest to latest.
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If not None, only show revisions >= start_revision
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If not None, only show revisions <= end_revision
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from bzrlib.osutils import format_date
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from bzrlib.errors import BzrCheckError
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from bzrlib.textui import show_status
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from warnings import warn
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if not isinstance(lf, LogFormatter):
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warn("not a LogFormatter instance: %r" % lf)
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mutter('get log for file_id %r' % specific_fileid)
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if search is not None:
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searchRE = re.compile(search, re.IGNORECASE)
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which_revs = _enumerate_history(branch)
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if start_revision is None:
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elif start_revision < 1 or start_revision >= len(which_revs):
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raise InvalidRevisionNumber(start_revision)
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if end_revision is None:
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end_revision = len(which_revs)
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elif end_revision < 1 or end_revision >= len(which_revs):
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raise InvalidRevisionNumber(end_revision)
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# list indexes are 0-based; revisions are 1-based
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cut_revs = which_revs[(start_revision-1):(end_revision)]
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if direction == 'reverse':
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elif direction == 'forward':
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raise ValueError('invalid direction %r' % direction)
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for revno, rev_id in cut_revs:
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if verbose or specific_fileid:
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delta = branch.get_revision_delta(revno)
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if not delta.touches_file_id(specific_fileid):
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# although we calculated it, throw it away without display
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rev = branch.get_revision(rev_id)
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if not searchRE.search(rev.message):
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lf.show(revno, rev, delta)
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def deltas_for_log_dummy(branch, which_revs):
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"""Return all the revisions without intermediate deltas.
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Useful for log commands that won't need the delta information.
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for revno, revision_id in which_revs:
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yield revno, branch.get_revision(revision_id), None
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def deltas_for_log_reverse(branch, which_revs):
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"""Compute deltas for display in latest-to-earliest order.
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Sequence of (revno, revision_id) for the subset of history to examine
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Sequence of (revno, rev, delta)
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The delta is from the given revision to the next one in the
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sequence, which makes sense if the log is being displayed from
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last_revno = last_revision_id = last_tree = None
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for revno, revision_id in which_revs:
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this_tree = branch.revision_tree(revision_id)
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this_revision = branch.get_revision(revision_id)
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yield last_revno, last_revision, compare_trees(this_tree, last_tree, False)
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this_tree = EmptyTree(branch.get_root_id())
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last_revision = this_revision
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last_tree = this_tree
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this_tree = EmptyTree(branch.get_root_id())
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this_revno = last_revno - 1
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this_revision_id = branch.revision_history()[this_revno]
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this_tree = branch.revision_tree(this_revision_id)
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yield last_revno, last_revision, compare_trees(this_tree, last_tree, False)
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def deltas_for_log_forward(branch, which_revs):
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"""Compute deltas for display in forward log.
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Given a sequence of (revno, revision_id) pairs, return
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The delta is from the given revision to the next one in the
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sequence, which makes sense if the log is being displayed from
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last_revno = last_revision_id = last_tree = None
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prev_tree = EmptyTree(branch.get_root_id())
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for revno, revision_id in which_revs:
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this_tree = branch.revision_tree(revision_id)
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this_revision = branch.get_revision(revision_id)
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last_tree = EmptyTree(branch.get_root_id())
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last_revno = revno - 1
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last_revision_id = branch.revision_history()[last_revno]
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last_tree = branch.revision_tree(last_revision_id)
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yield revno, this_revision, compare_trees(last_tree, this_tree, False)
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last_revision = this_revision
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last_tree = this_tree
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class LogFormatter(object):
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"""Abstract class to display log messages."""
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def __init__(self, to_file, show_ids=False, show_timezone='original'):
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self.to_file = to_file
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self.show_ids = show_ids
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self.show_timezone = show_timezone
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def show(self, revno, rev, delta):
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raise NotImplementedError('not implemented in abstract base')
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class LongLogFormatter(LogFormatter):
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def show(self, revno, rev, delta):
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from osutils import format_date
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to_file = self.to_file
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If true, show revision and file ids.
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File to send log to; by default stdout.
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from osutils import format_date
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from errors import BzrCheckError
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from diff import compare_trees
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from textui import show_status
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file_id = branch.read_working_inventory().path2id(filename)
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for revno, revid, why in find_touching_revisions(branch, file_id):
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for i, revid in enumerate(branch.revision_history()):
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branch._need_readlock()
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from tree import EmptyTree
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prev_tree = EmptyTree()
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for revno, revision_id in which_revs():
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print >>to_file, '-' * 60
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print >>to_file, 'revno:', revno
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print >>to_file, 'revision-id:', rev.revision_id
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rev = branch.get_revision(revision_id)
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print >>to_file, 'revision-id:', revision_id
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print >>to_file, 'committer:', rev.committer
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print >>to_file, 'timestamp: %s' % (format_date(rev.timestamp, rev.timezone or 0,
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date_str = format_date(rev.timestamp,
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print >>to_file, 'timestamp: %s' % date_str
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if revision_id != rev.revision_id:
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raise BzrCheckError("retrieved wrong revision: %r"
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% (revision_id, rev.revision_id))
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print >>to_file, 'message:'
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if not rev.message:
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for l in rev.message.split('\n'):
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print >>to_file, ' ' + l
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delta.show(to_file, self.show_ids)
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class ShortLogFormatter(LogFormatter):
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def show(self, revno, rev, delta):
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from bzrlib.osutils import format_date
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to_file = self.to_file
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print >>to_file, "%5d %s\t%s" % (revno, rev.committer,
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format_date(rev.timestamp, rev.timezone or 0,
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print >>to_file, ' revision-id:', rev.revision_id
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print >>to_file, ' (no message)'
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for l in rev.message.split('\n'):
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print >>to_file, ' ' + l
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# TODO: Why not show the modified files in a shorter form as
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# well? rewrap them single lines of appropriate length
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delta.show(to_file, self.show_ids)
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FORMATTERS = {'long': LongLogFormatter,
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'short': ShortLogFormatter,
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def log_formatter(name, *args, **kwargs):
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from bzrlib.errors import BzrCommandError
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return FORMATTERS[name](*args, **kwargs)
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raise BzrCommandError("unknown log formatter: %r" % name)
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def show_one_log(revno, rev, delta, verbose, to_file, show_timezone):
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# deprecated; for compatability
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lf = LongLogFormatter(to_file=to_file, show_timezone=show_timezone)
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lf.show(revno, rev, delta)
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# Don't show a list of changed files if we were asked about
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this_tree = branch.revision_tree(revision_id)
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delta = compare_trees(prev_tree, this_tree, want_unchanged=False)
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delta.show(to_file, show_ids)
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prev_tree = this_tree
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precursor = revision_id
added
removed
bzrlib/log.py
