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import re
from itertools import chain
from dulwich import objects
from subprocess import Popen, PIPE
from rhodecode.lib.vcs.conf import settings
from rhodecode.lib.vcs.exceptions import RepositoryError
from rhodecode.lib.vcs.exceptions import ChangesetError
from rhodecode.lib.vcs.exceptions import NodeDoesNotExistError
from rhodecode.lib.vcs.exceptions import VCSError
from rhodecode.lib.vcs.exceptions import ChangesetDoesNotExistError
from rhodecode.lib.vcs.exceptions import ImproperArchiveTypeError
from rhodecode.lib.vcs.backends.base import BaseChangeset
from rhodecode.lib.vcs.nodes import FileNode, DirNode, NodeKind, RootNode, RemovedFileNode
from rhodecode.lib.vcs.utils import safe_unicode
from rhodecode.lib.vcs.utils import date_fromtimestamp
from rhodecode.lib.vcs.utils.lazy import LazyProperty
class GitChangeset(BaseChangeset):
"""
Represents state of the repository at single revision.
"""
def __init__(self, repository, revision):
self._stat_modes = {}
self.repository = repository
self.raw_id = revision
self.revision = repository.revisions.index(revision)
self.short_id = self.raw_id[:12]
self.id = self.raw_id
try:
commit = self.repository._repo.get_object(self.raw_id)
except KeyError:
raise RepositoryError("Cannot get object with id %s" % self.raw_id)
self._commit = commit
self._tree_id = commit.tree
try:
self.message = safe_unicode(commit.message[:-1])
# Always strip last eol
except UnicodeDecodeError:
self.message = commit.message[:-1].decode(commit.encoding
or 'utf-8')
#self.branch = None
self.tags = []
#tree = self.repository.get_object(self._tree_id)
self.nodes = {}
self._paths = {}
@LazyProperty
def author(self):
return safe_unicode(self._commit.committer)
@LazyProperty
def date(self):
return date_fromtimestamp(self._commit.commit_time,
self._commit.commit_timezone)
@LazyProperty
def status(self):
"""
Returns modified, added, removed, deleted files for current changeset
"""
return self.changed, self.added, self.removed
@LazyProperty
def branch(self):
# TODO: Cache as we walk (id <-> branch name mapping)
refs = self.repository._repo.get_refs()
heads = [(key[len('refs/heads/'):], val) for key, val in refs.items()
if key.startswith('refs/heads/')]
for name, id in heads:
walker = self.repository._repo.object_store.get_graph_walker([id])
while True:
id = walker.next()
if not id:
break
if id == self.id:
return safe_unicode(name)
raise ChangesetError("This should not happen... Have you manually "
"change id of the changeset?")
def _fix_path(self, path):
"""
Paths are stored without trailing slash so we need to get rid off it if
needed.
"""
if path.endswith('/'):
path = path.rstrip('/')
return path
def _get_id_for_path(self, path):
# FIXME: Please, spare a couple of minutes and make those codes cleaner;
if not path in self._paths:
path = path.strip('/')
# set root tree
tree = self.repository._repo[self._commit.tree]
if path == '':
self._paths[''] = tree.id
return tree.id
splitted = path.split('/')
dirs, name = splitted[:-1], splitted[-1]
curdir = ''
for dir in dirs:
if curdir:
curdir = '/'.join((curdir, dir))
else:
curdir = dir
#if curdir in self._paths:
## This path have been already traversed
## Update tree and continue
#tree = self.repository._repo[self._paths[curdir]]
#continue
dir_id = None
for item, stat, id in tree.iteritems():
if curdir:
item_path = '/'.join((curdir, item))
else:
item_path = item
self._paths[item_path] = id
self._stat_modes[item_path] = stat
if dir == item:
dir_id = id
if dir_id:
# Update tree
tree = self.repository._repo[dir_id]
if not isinstance(tree, objects.Tree):
raise ChangesetError('%s is not a directory' % curdir)
else:
raise ChangesetError('%s have not been found' % curdir)
for item, stat, id in tree.iteritems():
if curdir:
name = '/'.join((curdir, item))
else:
name = item
self._paths[name] = id
self._stat_modes[name] = stat
if not path in self._paths:
raise NodeDoesNotExistError("There is no file nor directory "
"at the given path %r at revision %r"
% (path, self.short_id))
return self._paths[path]
def _get_kind(self, path):
id = self._get_id_for_path(path)
obj = self.repository._repo[id]
if isinstance(obj, objects.Blob):
return NodeKind.FILE
elif isinstance(obj, objects.Tree):
return NodeKind.DIR
def _get_file_nodes(self):
return chain(*(t[2] for t in self.walk()))
@LazyProperty
def parents(self):
"""
Returns list of parents changesets.
"""
return [self.repository.get_changeset(parent)
for parent in self._commit.parents]
def next(self, branch=None):
if branch and self.branch != branch:
raise VCSError('Branch option used on changeset not belonging '
'to that branch')
def _next(changeset, branch):
try:
next_ = changeset.revision + 1
next_rev = changeset.repository.revisions[next_]
except IndexError:
raise ChangesetDoesNotExistError
cs = changeset.repository.get_changeset(next_rev)
if branch and branch != cs.branch:
return _next(cs, branch)
return cs
return _next(self, branch)
def prev(self, branch=None):
if branch and self.branch != branch:
raise VCSError('Branch option used on changeset not belonging '
'to that branch')
def _prev(changeset, branch):
try:
prev_ = changeset.revision - 1
if prev_ < 0:
raise IndexError
prev_rev = changeset.repository.revisions[prev_]
except IndexError:
raise ChangesetDoesNotExistError
cs = changeset.repository.get_changeset(prev_rev)
if branch and branch != cs.branch:
return _prev(cs, branch)
return cs
return _prev(self, branch)
def get_file_mode(self, path):
"""
Returns stat mode of the file at the given ``path``.
"""
# ensure path is traversed
self._get_id_for_path(path)
return self._stat_modes[path]
def get_file_content(self, path):
"""
Returns content of the file at given ``path``.
"""
id = self._get_id_for_path(path)
blob = self.repository._repo[id]
return blob.as_pretty_string()
def get_file_size(self, path):
"""
Returns size of the file at given ``path``.
"""
id = self._get_id_for_path(path)
blob = self.repository._repo[id]
return blob.raw_length()
def get_file_changeset(self, path):
"""
Returns last commit of the file at the given ``path``.
"""
node = self.get_node(path)
return node.history[0]
def get_file_history(self, path):
"""
Returns history of file as reversed list of ``Changeset`` objects for
which file at given ``path`` has been modified.
TODO: This function now uses os underlying 'git' and 'grep' commands
which is generally not good. Should be replaced with algorithm
iterating commits.
"""
cmd = 'log --pretty="format: %%H" --name-status -p %s -- "%s"' % (
'', path
)
so, se = self.repository.run_git_command(cmd)
ids = re.findall(r'\w{40}', so)
return [self.repository.get_changeset(id) for id in ids]
def get_file_annotate(self, path):
"""
Returns a list of three element tuples with lineno,changeset and line
TODO: This function now uses os underlying 'git' command which is
generally not good. Should be replaced with algorithm iterating
commits.
"""
cmd = 'blame -l --root -r %s -- "%s"' % (self.id, path)
# -l ==> outputs long shas (and we need all 40 characters)
# --root ==> doesn't put '^' character for bounderies
# -r sha ==> blames for the given revision
so, se = self.repository.run_git_command(cmd)
annotate = []
for i, blame_line in enumerate(so.split('\n')[:-1]):
ln_no = i + 1
id, line = re.split(r' \(.+?\) ', blame_line, 1)
annotate.append((ln_no, self.repository.get_changeset(id), line))
return annotate
def fill_archive(self, stream=None, kind='tgz', prefix=None,
subrepos=False):
"""
Fills up given stream.
:param stream: file like object.
:param kind: one of following: ``zip``, ``tgz`` or ``tbz2``.
Default: ``tgz``.
:param prefix: name of root directory in archive.
Default is repository name and changeset's raw_id joined with dash
(``repo-tip.<KIND>``).
:param subrepos: include subrepos in this archive.
:raise ImproperArchiveTypeError: If given kind is wrong.
:raise VcsError: If given stream is None
"""
allowed_kinds = settings.ARCHIVE_SPECS.keys()
if kind not in allowed_kinds:
raise ImproperArchiveTypeError('Archive kind not supported use one'
'of %s', allowed_kinds)
if prefix is None:
prefix = '%s-%s' % (self.repository.name, self.short_id)
elif prefix.startswith('/'):
raise VCSError("Prefix cannot start with leading slash")
elif prefix.strip() == '':
raise VCSError("Prefix cannot be empty")
if kind == 'zip':
frmt = 'zip'
else:
frmt = 'tar'
cmd = 'git archive --format=%s --prefix=%s/ %s' % (frmt, prefix,
self.raw_id)
if kind == 'tgz':
cmd += ' | gzip -9'
elif kind == 'tbz2':
cmd += ' | bzip2 -9'
if stream is None:
raise VCSError('You need to pass in a valid stream for filling'
' with archival data')
popen = Popen(cmd, stdout=PIPE, stderr=PIPE, shell=True,
cwd=self.repository.path)
buffer_size = 1024 * 8
chunk = popen.stdout.read(buffer_size)
while chunk:
stream.write(chunk)
chunk = popen.stdout.read(buffer_size)
# Make sure all descriptors would be read
popen.communicate()
def get_nodes(self, path):
if self._get_kind(path) != NodeKind.DIR:
raise ChangesetError("Directory does not exist for revision %r at "
" %r" % (self.revision, path))
path = self._fix_path(path)
id = self._get_id_for_path(path)
tree = self.repository._repo[id]
dirnodes = []
filenodes = []
for name, stat, id in tree.iteritems():
obj = self.repository._repo.get_object(id)
if path != '':
obj_path = '/'.join((path, name))
else:
obj_path = name
if obj_path not in self._stat_modes:
self._stat_modes[obj_path] = stat
if isinstance(obj, objects.Tree):
dirnodes.append(DirNode(obj_path, changeset=self))
elif isinstance(obj, objects.Blob):
filenodes.append(FileNode(obj_path, changeset=self, mode=stat))
else:
raise ChangesetError("Requested object should be Tree "
"or Blob, is %r" % type(obj))
nodes = dirnodes + filenodes
for node in nodes:
if not node.path in self.nodes:
self.nodes[node.path] = node
nodes.sort()
return nodes
def get_node(self, path):
if isinstance(path, unicode):
path = path.encode('utf-8')
path = self._fix_path(path)
if not path in self.nodes:
try:
id = self._get_id_for_path(path)
except ChangesetError:
raise NodeDoesNotExistError("Cannot find one of parents' "
"directories for a given path: %s" % path)
obj = self.repository._repo.get_object(id)
if isinstance(obj, objects.Tree):
if path == '':
node = RootNode(changeset=self)
else:
node = DirNode(path, changeset=self)
node._tree = obj
elif isinstance(obj, objects.Blob):
node = FileNode(path, changeset=self)
node._blob = obj
else:
raise NodeDoesNotExistError("There is no file nor directory "
"at the given path %r at revision %r"
% (path, self.short_id))
# cache node
self.nodes[path] = node
return self.nodes[path]
@LazyProperty
def affected_files(self):
"""
Get's a fast accessible file changes for given changeset
"""
return self.added + self.changed
@LazyProperty
def _diff_name_status(self):
output = []
for parent in self.parents:
cmd = 'diff --name-status %s %s' % (parent.raw_id, self.raw_id)
so, se = self.repository.run_git_command(cmd)
output.append(so.strip())
return '\n'.join(output)
def _get_paths_for_status(self, status):
"""
Returns sorted list of paths for given ``status``.
:param status: one of: *added*, *modified* or *deleted*
"""
paths = set()
char = status[0].upper()
for line in self._diff_name_status.splitlines():
if not line:
continue
if line.startswith(char):
splitted = line.split(char,1)
if not len(splitted) == 2:
raise VCSError("Couldn't parse diff result:\n%s\n\n and "
"particularly that line: %s" % (self._diff_name_status,
line))
paths.add(splitted[1].strip())
return sorted(paths)
@LazyProperty
def added(self):
"""
Returns list of added ``FileNode`` objects.
"""
if not self.parents:
return list(self._get_file_nodes())
return [self.get_node(path) for path in self._get_paths_for_status('added')]
@LazyProperty
def changed(self):
"""
Returns list of modified ``FileNode`` objects.
"""
if not self.parents:
return []
return [self.get_node(path) for path in self._get_paths_for_status('modified')]
@LazyProperty
def removed(self):
"""
Returns list of removed ``FileNode`` objects.
"""
if not self.parents:
return []
return [RemovedFileNode(path) for path in self._get_paths_for_status('deleted')]
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