/brz/remove-bazaar

# Copyright (C) 2004, 2005 by Martin Pool

# Copyright (C) 2005 by 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

# TODO: Check ancestries are correct for every revision: includes

# every committed so far, and in a reasonable order.

# TODO: Also check non-mainline revisions mentioned as parents.

# TODO: Check for extra files in the control directory.

# TODO: Check revision, inventory and entry objects have all 

# required fields.

import bzrlib.ui

from bzrlib.trace import note, warning

from bzrlib.osutils import rename, sha_string, fingerprint_file, sha_strings

from bzrlib.trace import mutter

from bzrlib.errors import BzrCheckError, NoSuchRevision

from bzrlib.inventory import ROOT_ID

from bzrlib.branch import gen_root_id

class Check(object):

    """Check a branch"""

    def __init__(self, branch):

        self.branch = branch

	branch.lock_read()

	try:

	    self.run()

	finally:

   	    branch.unlock()

    def run(self):

        branch = self.branch

	branch.weave_store.enable_cache = True

	branch.control_weaves.enable_cache = True

	self.checked_text_cnt = 0

	self.checked_rev_cnt = 0

        self.repeated_text_cnt = 0

        self.missing_inventory_sha_cnt = 0

        self.missing_revision_cnt = 0

        # maps (file-id, version) -> sha1

        self.checked_texts = {}

        history = branch.revision_history()

        revno = 0

        revcount = len(history)

        last_rev_id = None

        self.progress = bzrlib.ui.ui_factory.progress_bar()

        for rev_id in history:

            self.progress.update('checking revision', revno, revcount)

            revno += 1

	    self.check_one_rev(rev_id, last_rev_id)

	    last_rev_id = rev_id

        self.progress.clear()

	self.report_results()

    def report_results(self):

	note('checked branch %s format %d',

	     self.branch.base, 

	     self.branch._branch_format)

        note('%6d revisions', self.checked_rev_cnt)

        note('%6d unique file texts', self.checked_text_cnt)

        note('%6d repeated file texts', self.repeated_text_cnt)

        if self.missing_inventory_sha_cnt:

            note('%d revisions are missing inventory_sha1',

		 self.missing_inventory_sha_cnt)

        if self.missing_revision_cnt:

            note('%d revisions are mentioned but not present',

		 self.missing_revision_cnt)

    def check_one_rev(self, rev_id, last_rev_id):

	"""Check one revision.

	rev_id - the one to check

	last_rev_id - the previous one on the mainline, if any.

	"""

	# mutter('    revision {%s}' % rev_id)

	branch = self.branch

	rev = branch.get_revision(rev_id)

	if rev.revision_id != rev_id:

	    raise BzrCheckError('wrong internal revision id in revision {%s}'

				% rev_id)

	# check the previous history entry is a parent of this entry

	if rev.parent_ids:

	    if last_rev_id is None:

		raise BzrCheckError("revision {%s} has %d parents, but is the "

				    "start of the branch"

				    % (rev_id, len(rev.parent_ids)))

	    for parent_id in rev.parent_ids:

		if parent_id == last_rev_id:

		    break

	    else:

		raise BzrCheckError("previous revision {%s} not listed among "

				    "parents of {%s}"

				    % (last_rev_id, rev_id))

	elif last_rev_id:

	    raise BzrCheckError("revision {%s} has no parents listed "

				"but preceded by {%s}"

				% (rev_id, last_rev_id))

	if rev.inventory_sha1:

	    inv_sha1 = branch.get_inventory_sha1(rev_id)

	    if inv_sha1 != rev.inventory_sha1:

		raise BzrCheckError('Inventory sha1 hash doesn\'t match'

		    ' value in revision {%s}' % rev_id)

	else:

	    missing_inventory_sha_cnt += 1

	    mutter("no inventory_sha1 on revision {%s}" % rev_id)

	self._check_revision_tree(rev_id)

        self.checked_rev_cnt += 1

    def _check_revision_tree(self, rev_id):

	tree = self.branch.revision_tree(rev_id)

	inv = tree.inventory

	seen_ids = {}

	for file_id in inv:

	    if file_id in seen_ids:

		raise BzrCheckError('duplicated file_id {%s} '

				    'in inventory for revision {%s}'

				    % (file_id, rev_id))

	    seen_ids[file_id] = True

	for file_id in inv:

	    self._check_one_entry(rev_id, inv, tree, file_id)

	seen_names = {}

	for path, ie in inv.iter_entries():

	    if path in seen_names:

		raise BzrCheckError('duplicated path %s '

				    'in inventory for revision {%s}'

				    % (path, rev_id))

	    seen_names[path] = True

    def _check_one_entry(self, rev_id, inv, tree, file_id):

	ie = inv[file_id]

	if ie.parent_id != None:

	    if not inv.has_id(ie.parent_id):

		raise BzrCheckError('missing parent {%s} in inventory for revision {%s}'

			% (ie.parent_id, rev_id))

	if ie.kind == 'file':

            text_version = ie.text_version

            t = (file_id, text_version)

            if t in self.checked_texts:

                prev_sha = self.checked_texts[t] 

                if prev_sha != ie.text_sha1:

                    raise BzrCheckError('mismatched sha1 on {%s} in {%s}' %

                                        (file_id, rev_id))

                else:

                    self.repeated_text_cnt += 1

		    return

            mutter('check version {%s} of {%s}', rev_id, file_id)

	    file_lines = tree.get_file_lines(file_id)

	    self.checked_text_cnt += 1 

	    if ie.text_size != sum(map(len, file_lines)):

		raise BzrCheckError('text {%s} wrong size' % ie.text_id)

	    if ie.text_sha1 != sha_strings(file_lines):

		raise BzrCheckError('text {%s} wrong sha1' % ie.text_id)

            self.checked_texts[t] = ie.text_sha1

	elif ie.kind == 'directory':

	    if ie.text_sha1 != None or ie.text_size != None or ie.text_id != None:

		raise BzrCheckError('directory {%s} has text in revision {%s}'

			% (file_id, rev_id))

	elif ie.kind == 'root_directory':

	    pass

	else:

	    raise BzrCheckError('unknown entry kind %r in revision {%s}' % 

				(ie.kind, rev_id))

def check(branch):

    """Run consistency checks on a branch."""

    Check(branch)