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import time
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import datetime
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import posixpath
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from dulwich import objects
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from dulwich.repo import Repo
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from rhodecode.lib.vcs.backends.base import BaseInMemoryChangeset
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from rhodecode.lib.vcs.exceptions import RepositoryError
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from rhodecode.lib.vcs.utils import safe_str
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class GitInMemoryChangeset(BaseInMemoryChangeset):
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def commit(self, message, author, parents=None, branch=None, date=None,
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**kwargs):
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"""
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Performs in-memory commit (doesn't check workdir in any way) and
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returns newly created ``Changeset``. Updates repository's
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``revisions``.
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:param message: message of the commit
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:param author: full username, i.e. "Joe Doe <joe.doe@example.com>"
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:param parents: single parent or sequence of parents from which commit
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would be derieved
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:param date: ``datetime.datetime`` instance. Defaults to
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``datetime.datetime.now()``.
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:param branch: branch name, as string. If none given, default backend's
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branch would be used.
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:raises ``CommitError``: if any error occurs while committing
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"""
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self.check_integrity(parents)
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from .repository import GitRepository
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if branch is None:
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branch = GitRepository.DEFAULT_BRANCH_NAME
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repo = self.repository._repo
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object_store = repo.object_store
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ENCODING = "UTF-8"
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DIRMOD = 040000
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# Create tree and populates it with blobs
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commit_tree = self.parents[0] and repo[self.parents[0]._commit.tree] or\
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objects.Tree()
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for node in self.added + self.changed:
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# Compute subdirs if needed
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dirpath, nodename = posixpath.split(node.path)
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dirnames = dirpath and dirpath.split('/') or []
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parent = commit_tree
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ancestors = [('', parent)]
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# Tries to dig for the deepest existing tree
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while dirnames:
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curdir = dirnames.pop(0)
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try:
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dir_id = parent[curdir][1]
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except KeyError:
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# put curdir back into dirnames and stops
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dirnames.insert(0, curdir)
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break
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else:
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# If found, updates parent
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parent = self.repository._repo[dir_id]
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ancestors.append((curdir, parent))
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# Now parent is deepest exising tree and we need to create subtrees
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# for dirnames (in reverse order) [this only applies for nodes from added]
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new_trees = []
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blob = objects.Blob.from_string(node.content.encode(ENCODING))
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node_path = node.name.encode(ENCODING)
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if dirnames:
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# If there are trees which should be created we need to build
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# them now (in reverse order)
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reversed_dirnames = list(reversed(dirnames))
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curtree = objects.Tree()
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curtree[node_path] = node.mode, blob.id
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new_trees.append(curtree)
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for dirname in reversed_dirnames[:-1]:
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newtree = objects.Tree()
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#newtree.add(DIRMOD, dirname, curtree.id)
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newtree[dirname] = DIRMOD, curtree.id
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new_trees.append(newtree)
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curtree = newtree
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parent[reversed_dirnames[-1]] = DIRMOD, curtree.id
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else:
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parent.add(name=node_path, mode=node.mode, hexsha=blob.id)
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new_trees.append(parent)
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# Update ancestors
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for parent, tree, path in reversed([(a[1], b[1], b[0]) for a, b in
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zip(ancestors, ancestors[1:])]):
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parent[path] = DIRMOD, tree.id
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object_store.add_object(tree)
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object_store.add_object(blob)
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for tree in new_trees:
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object_store.add_object(tree)
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for node in self.removed:
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paths = node.path.split('/')
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tree = commit_tree
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trees = [tree]
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# Traverse deep into the forest...
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for path in paths:
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try:
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obj = self.repository._repo[tree[path][1]]
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if isinstance(obj, objects.Tree):
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trees.append(obj)
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tree = obj
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except KeyError:
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break
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# Cut down the blob and all rotten trees on the way back...
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for path, tree in reversed(zip(paths, trees)):
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del tree[path]
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if tree:
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# This tree still has elements - don't remove it or any
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# of it's parents
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break
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object_store.add_object(commit_tree)
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# Create commit
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commit = objects.Commit()
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commit.tree = commit_tree.id
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commit.parents = [p._commit.id for p in self.parents if p]
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commit.author = commit.committer = safe_str(author)
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commit.encoding = ENCODING
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commit.message = safe_str(message)
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# Compute date
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if date is None:
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date = time.time()
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elif isinstance(date, datetime.datetime):
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date = time.mktime(date.timetuple())
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author_time = kwargs.pop('author_time', date)
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commit.commit_time = int(date)
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commit.author_time = int(author_time)
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tz = time.timezone
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author_tz = kwargs.pop('author_timezone', tz)
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commit.commit_timezone = tz
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commit.author_timezone = author_tz
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object_store.add_object(commit)
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ref = 'refs/heads/%s' % branch
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repo.refs[ref] = commit.id
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repo.refs.set_symbolic_ref('HEAD', ref)
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# Update vcs repository object & recreate dulwich repo
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self.repository.revisions.append(commit.id)
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self.repository._repo = Repo(self.repository.path)
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# invalidate parsed refs after commit
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self.repository._parsed_refs = self.repository._get_parsed_refs()
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tip = self.repository.get_changeset()
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self.reset()
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return tip
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def _get_missing_trees(self, path, root_tree):
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"""
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Creates missing ``Tree`` objects for the given path.
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:param path: path given as a string. It may be a path to a file node
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(i.e. ``foo/bar/baz.txt``) or directory path - in that case it must
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end with slash (i.e. ``foo/bar/``).
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:param root_tree: ``dulwich.objects.Tree`` object from which we start
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traversing (should be commit's root tree)
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"""
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dirpath = posixpath.split(path)[0]
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dirs = dirpath.split('/')
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if not dirs or dirs == ['']:
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return []
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def get_tree_for_dir(tree, dirname):
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for name, mode, id in tree.iteritems():
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if name == dirname:
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obj = self.repository._repo[id]
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if isinstance(obj, objects.Tree):
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return obj
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else:
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raise RepositoryError("Cannot create directory %s "
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"at tree %s as path is occupied and is not a "
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"Tree" % (dirname, tree))
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return None
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trees = []
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parent = root_tree
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for dirname in dirs:
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tree = get_tree_for_dir(parent, dirname)
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if tree is None:
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tree = objects.Tree()
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dirmode = 040000
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parent.add(dirmode, dirname, tree.id)
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parent = tree
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# Always append tree
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trees.append(tree)
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return trees
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