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# Copyright (C) 2005 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Code to show logs of changes.
Various flavors of log can be produced:
* for one file, or the whole tree, and (not done yet) for
files in a given directory
* in "verbose" mode with a description of what changed from one
version to the next
* with file-ids and revision-ids shown
* from last to first or (not anymore) from first to last;
the default is "reversed" because it shows the likely most
relevant and interesting information first
* (not yet) in XML format
"""
from trace import mutter
def find_touching_revisions(branch, file_id):
"""Yield a description of revisions which affect the file_id.
Each returned element is (revno, revision_id, description)
This is the list of revisions where the file is either added,
modified, renamed or deleted.
TODO: Perhaps some way to limit this to only particular revisions,
or to traverse a non-mainline set of revisions?
"""
last_ie = None
last_path = None
revno = 1
for revision_id in branch.revision_history():
this_inv = branch.get_revision_inventory(revision_id)
if file_id in this_inv:
this_ie = this_inv[file_id]
this_path = this_inv.id2path(file_id)
else:
this_ie = this_path = None
# now we know how it was last time, and how it is in this revision.
# are those two states effectively the same or not?
if not this_ie and not last_ie:
# not present in either
pass
elif this_ie and not last_ie:
yield revno, revision_id, "added " + this_path
elif not this_ie and last_ie:
# deleted here
yield revno, revision_id, "deleted " + last_path
elif this_path != last_path:
yield revno, revision_id, ("renamed %s => %s" % (last_path, this_path))
elif (this_ie.text_size != last_ie.text_size
or this_ie.text_sha1 != last_ie.text_sha1):
yield revno, revision_id, "modified " + this_path
last_ie = this_ie
last_path = this_path
revno += 1
def show_log(branch,
lf,
specific_fileid=None,
verbose=False,
direction='reverse',
start_revision=None,
end_revision=None,
search=None):
"""Write out human-readable log of commits to this branch.
lf
LogFormatter object to show the output.
specific_fileid
If true, list only the commits affecting the specified
file, rather than all commits.
verbose
If true show added/changed/deleted/renamed files.
direction
'reverse' (default) is latest to earliest;
'forward' is earliest to latest.
start_revision
If not None, only show revisions >= start_revision
end_revision
If not None, only show revisions <= end_revision
"""
from bzrlib.osutils import format_date
from bzrlib.errors import BzrCheckError
from bzrlib.textui import show_status
from warnings import warn
if not isinstance(lf, LogFormatter):
warn("not a LogFormatter instance: %r" % lf)
if specific_fileid:
mutter('get log for file_id %r' % specific_fileid)
if search is not None:
import re
searchRE = re.compile(search, re.IGNORECASE)
else:
searchRE = None
which_revs = branch.enum_history(direction)
which_revs = [x for x in which_revs if (
(start_revision is None or x[0] >= start_revision)
and (end_revision is None or x[0] <= end_revision))]
if not (verbose or specific_fileid):
# no need to know what changed between revisions
with_deltas = deltas_for_log_dummy(branch, which_revs)
elif direction == 'reverse':
with_deltas = deltas_for_log_reverse(branch, which_revs)
else:
with_deltas = deltas_for_log_forward(branch, which_revs)
for revno, rev, delta in with_deltas:
if specific_fileid:
if not delta.touches_file_id(specific_fileid):
continue
if not verbose:
# although we calculated it, throw it away without display
delta = None
if searchRE is None or searchRE.search(rev.message):
lf.show(revno, rev, delta)
def deltas_for_log_dummy(branch, which_revs):
for revno, revision_id in which_revs:
yield revno, branch.get_revision(revision_id), None
def deltas_for_log_reverse(branch, which_revs):
"""Compute deltas for display in reverse log.
Given a sequence of (revno, revision_id) pairs, return
(revno, rev, delta).
The delta is from the given revision to the next one in the
sequence, which makes sense if the log is being displayed from
newest to oldest.
"""
from tree import EmptyTree
from diff import compare_trees
last_revno = last_revision_id = last_tree = None
for revno, revision_id in which_revs:
this_tree = branch.revision_tree(revision_id)
this_revision = branch.get_revision(revision_id)
if last_revno:
yield last_revno, last_revision, compare_trees(this_tree, last_tree, False)
this_tree = EmptyTree(branch.get_root_id())
last_revno = revno
last_revision = this_revision
last_tree = this_tree
if last_revno:
if last_revno == 1:
this_tree = EmptyTree(branch.get_root_id())
else:
this_revno = last_revno - 1
this_revision_id = branch.revision_history()[this_revno]
this_tree = branch.revision_tree(this_revision_id)
yield last_revno, last_revision, compare_trees(this_tree, last_tree, False)
def deltas_for_log_forward(branch, which_revs):
"""Compute deltas for display in forward log.
Given a sequence of (revno, revision_id) pairs, return
(revno, rev, delta).
The delta is from the given revision to the next one in the
sequence, which makes sense if the log is being displayed from
newest to oldest.
"""
from tree import EmptyTree
from diff import compare_trees
last_revno = last_revision_id = last_tree = None
prev_tree = EmptyTree(branch.get_root_id())
for revno, revision_id in which_revs:
this_tree = branch.revision_tree(revision_id)
this_revision = branch.get_revision(revision_id)
if not last_revno:
if revno == 1:
last_tree = EmptyTree(branch.get_root_id())
else:
last_revno = revno - 1
last_revision_id = branch.revision_history()[last_revno]
last_tree = branch.revision_tree(last_revision_id)
yield revno, this_revision, compare_trees(last_tree, this_tree, False)
last_revno = revno
last_revision = this_revision
last_tree = this_tree
class LogFormatter(object):
"""Abstract class to display log messages."""
def __init__(self, to_file, show_ids=False, show_timezone=False):
self.to_file = to_file
self.show_ids = show_ids
self.show_timezone = show_timezone
class LongLogFormatter(LogFormatter):
def show(self, revno, rev, delta):
from osutils import format_date
to_file = self.to_file
print >>to_file, '-' * 60
print >>to_file, 'revno:', revno
if self.show_ids:
print >>to_file, 'revision-id:', rev.revision_id
print >>to_file, 'committer:', rev.committer
print >>to_file, 'timestamp: %s' % (format_date(rev.timestamp, rev.timezone or 0,
self.show_timezone))
print >>to_file, 'message:'
if not rev.message:
print >>to_file, ' (no message)'
else:
for l in rev.message.split('\n'):
print >>to_file, ' ' + l
if delta != None:
delta.show(to_file, self.show_ids)
class ShortLogFormatter(LogFormatter):
def show(self, revno, rev, delta):
from bzrlib.osutils import format_date
to_file = self.to_file
print >>to_file, "%5d %s\t%s" % (revno, rev.committer,
format_date(rev.timestamp, rev.timezone or 0,
self.show_timezone))
if self.show_ids:
print >>to_file, ' revision-id:', rev.revision_id
if not rev.message:
print >>to_file, ' (no message)'
else:
for l in rev.message.split('\n'):
print >>to_file, ' ' + l
if delta != None:
delta.show(to_file, self.show_ids)
print
FORMATTERS = {'long': LongLogFormatter,
'short': ShortLogFormatter,
}
def log_formatter(name, *args, **kwargs):
from bzrlib.errors import BzrCommandError
try:
return FORMATTERS[name](*args, **kwargs)
except IndexError:
raise BzrCommandError("unknown log formatter: %r" % name)
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