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, EmptyChangeset from rhodecode.lib.vcs.nodes import FileNode, DirNode, NodeKind, RootNode, \ RemovedFileNode, SubModuleNode, ChangedFileNodesGenerator,\ AddedFileNodesGenerator, RemovedFileNodesGenerator 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 try: commit = self.repository._repo.get_object(revision) if isinstance(commit, objects.Tag): revision = commit.object[1] commit = self.repository._repo.get_object(commit.object[1]) except KeyError: raise RepositoryError("Cannot get object with id %s" % revision) self.raw_id = revision self.id = self.raw_id self.short_id = self.raw_id[:12] self._commit = commit self._tree_id = commit.tree self._commiter_property = 'committer' self._author_property = 'author' self._date_property = 'commit_time' self._date_tz_property = 'commit_timezone' self.revision = repository.revisions.index(revision) self.message = safe_unicode(commit.message) self.nodes = {} self._paths = {} @LazyProperty def commiter(self): return safe_unicode(getattr(self._commit, self._commiter_property)) @LazyProperty def author(self): return safe_unicode(getattr(self._commit, self._author_property)) @LazyProperty def date(self): return date_fromtimestamp(getattr(self._commit, self._date_property), getattr(self._commit, self._date_tz_property)) @LazyProperty def _timestamp(self): return getattr(self._commit, self._date_property) @LazyProperty def status(self): """ Returns modified, added, removed, deleted files for current changeset """ return self.changed, self.added, self.removed @LazyProperty def tags(self): _tags = [] for tname, tsha in self.repository.tags.iteritems(): if tsha == self.raw_id: _tags.append(tname) return _tags @LazyProperty def branch(self): heads = self.repository._heads(reverse=False) ref = heads.get(self.raw_id) if ref: return safe_unicode(ref) 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._tree_id] if path == '': self._paths[''] = tree.id return tree.id splitted = path.split('/') dirs, name = splitted[:-1], splitted[-1] curdir = '' # initially extract things from root dir 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 for dir in dirs: if curdir: curdir = '/'.join((curdir, dir)) else: curdir = dir dir_id = None for item, stat, id in tree.iteritems(): 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) # cache all items from the given traversed tree 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): obj = self.repository._repo[self._get_id_for_path(path)] if isinstance(obj, objects.Blob): return NodeKind.FILE elif isinstance(obj, objects.Tree): return NodeKind.DIR def _get_filectx(self, path): path = self._fix_path(path) if self._get_kind(path) != NodeKind.FILE: raise ChangesetError("File does not exist for revision %r at " " %r" % (self.raw_id, path)) return path 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 diff(self, ignore_whitespace=True, context=3): rev1 = self.parents[0] if self.parents else self.repository.EMPTY_CHANGESET rev2 = self return ''.join(self.repository.get_diff(rev1, rev2, ignore_whitespace=ignore_whitespace, context=context)) 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. """ self._get_filectx(path) cmd = 'log --pretty="format: %%H" -s -p %s -- "%s"' % ( self.id, path ) so, se = self.repository.run_git_command(cmd) ids = re.findall(r'[0-9a-fA-F]{40}', so) return [self.repository.get_changeset(id) for id in ids] def get_file_history_2(self, path): """ Returns history of file as reversed list of ``Changeset`` objects for which file at given ``path`` has been modified. """ self._get_filectx(path) from dulwich.walk import Walker include = [self.id] walker = Walker(self.repository._repo.object_store, include, paths=[path], max_entries=1) return [self.repository.get_changeset(sha) for sha in (x.commit.id for x in walker)] def get_file_annotate(self, path): """ Returns a generator of four element tuples with lineno, sha, changeset lazy loader 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) for i, blame_line in enumerate(so.split('\n')[:-1]): ln_no = i + 1 sha, line = re.split(r' ', blame_line, 1) yield (ln_no, sha, lambda: self.repository.get_changeset(sha), line) 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.``). :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 = [] als = self.repository.alias for name, stat, id in tree.iteritems(): if objects.S_ISGITLINK(stat): dirnodes.append(SubModuleNode(name, url=None, changeset=id, alias=als)) continue 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) _GL = lambda m: m and objects.S_ISGITLINK(m) if _GL(self._stat_modes.get(path)): node = SubModuleNode(path, url=None, changeset=id_, alias=self.repository.alias) else: 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 """ a, m, d = self._changes_cache return list(a.union(m).union(d)) @LazyProperty def _diff_name_status(self): output = [] for parent in self.parents: cmd = 'diff --name-status %s %s --encoding=utf8' % (parent.raw_id, self.raw_id) so, se = self.repository.run_git_command(cmd) output.append(so.strip()) return '\n'.join(output) @LazyProperty def _changes_cache(self): added = set() modified = set() deleted = set() _r = self.repository._repo parents = self.parents if not self.parents: parents = [EmptyChangeset()] for parent in parents: if isinstance(parent, EmptyChangeset): oid = None else: oid = _r[parent.raw_id].tree changes = _r.object_store.tree_changes(oid, _r[self.raw_id].tree) for (oldpath, newpath), (_, _), (_, _) in changes: if newpath and oldpath: modified.add(newpath) elif newpath and not oldpath: added.add(newpath) elif not newpath and oldpath: deleted.add(oldpath) return added, modified, deleted def _get_paths_for_status(self, status): """ Returns sorted list of paths for given ``status``. :param status: one of: *added*, *modified* or *deleted* """ a, m, d = self._changes_cache return sorted({ 'added': list(a), 'modified': list(m), 'deleted': list(d)}[status] ) @LazyProperty def added(self): """ Returns list of added ``FileNode`` objects. """ if not self.parents: return list(self._get_file_nodes()) return AddedFileNodesGenerator([n for n in self._get_paths_for_status('added')], self) @LazyProperty def changed(self): """ Returns list of modified ``FileNode`` objects. """ if not self.parents: return [] return ChangedFileNodesGenerator([n for n in self._get_paths_for_status('modified')], self) @LazyProperty def removed(self): """ Returns list of removed ``FileNode`` objects. """ if not self.parents: return [] return RemovedFileNodesGenerator([n for n in self._get_paths_for_status('deleted')], self)