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- Committer: Martin Pool
- Date: 2005-07-21 12:01:14 UTC
- Revision ID: mbp@sourcefrog.net-20050721120114-100fff1ee8c35385
- fix up self reference in msvc lock object
- files added:
- bzrlib/hashcache.py
- tools
- files removed:
- bzrlib/statcache.py
- plugins/rsync
- files modified:
- .bzrignore
added
removed
bzrlib/changeset.py
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import errno
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import patch
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import stat
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from bzrlib.trace import mutter
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"""
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Represent and apply a changeset
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"""
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NULL_ID = "!NULL"
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class OldFailedTreeOp(Exception):
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def __init__(self):
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Exception.__init__(self, "bzr-tree-change contains files from a"
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" previous failed merge operation.")
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def invert_dict(dict):
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newdict = {}
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for (key,value) in dict.iteritems():
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:type reverse: bool
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:rtype: str
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"""
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mutter("Finding new path for %s" % self.summarize_name(changeset))
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if reverse:
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parent = self.parent
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to_dir = self.dir
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if from_dir == to_dir:
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dir = os.path.dirname(id_map[self.id])
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else:
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mutter("path, new_path: %r %r" % (self.path, self.new_path))
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parent_entry = changeset.entries[parent]
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dir = parent_entry.get_new_path(id_map, changeset, reverse)
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if from_name == to_name:
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my_sort(target_entries, shortest_to_longest)
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return (source_entries, target_entries)
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def rename_to_temp_delete(source_entries, inventory, dir, conflict_handler,
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reverse):
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def rename_to_temp_delete(source_entries, inventory, dir, temp_dir,
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conflict_handler, reverse):
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"""Delete and rename entries as appropriate. Entries are renamed to temp
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names. A map of id -> temp name is returned.
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names. A map of id -> temp name (or None, for deletions) is returned.
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:param source_entries: The entries to rename and delete
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:type source_entries: List of `ChangesetEntry`
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:return: a mapping of id to temporary name
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:rtype: Dictionary
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"""
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temp_dir = os.path.join(dir, "temp")
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temp_name = {}
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for i in range(len(source_entries)):
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entry = source_entries[i]
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if entry.is_deletion(reverse):
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path = os.path.join(dir, inventory[entry.id])
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entry.apply(path, conflict_handler, reverse)
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temp_name[entry.id] = None
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else:
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to_name = temp_dir+"/"+str(i)
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to_name = os.path.join(temp_dir, str(i))
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src_path = inventory.get(entry.id)
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if src_path is not None:
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src_path = os.path.join(dir, src_path)
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return temp_name
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def rename_to_new_create(temp_name, target_entries, inventory, changeset, dir,
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conflict_handler, reverse):
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def rename_to_new_create(changed_inventory, target_entries, inventory,
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changeset, dir, conflict_handler, reverse):
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"""Rename entries with temp names to their final names, create new files.
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:param temp_name: A mapping of id to temporary name
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:type temp_name: Dictionary
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:param changed_inventory: A mapping of id to temporary name
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:type changed_inventory: Dictionary
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:param target_entries: The entries to apply changes to
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:type target_entries: List of `ChangesetEntry`
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:param changeset: The changeset to apply
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:type reverse: bool
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"""
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for entry in target_entries:
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new_path = entry.get_new_path(inventory, changeset, reverse)
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if new_path is None:
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new_tree_path = entry.get_new_path(inventory, changeset, reverse)
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if new_tree_path is None:
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continue
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new_path = os.path.join(dir, new_path)
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old_path = temp_name.get(entry.id)
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new_path = os.path.join(dir, new_tree_path)
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old_path = changed_inventory.get(entry.id)
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if os.path.exists(new_path):
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if conflict_handler.target_exists(entry, new_path, old_path) == \
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"skip":
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continue
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if entry.is_creation(reverse):
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entry.apply(new_path, conflict_handler, reverse)
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changed_inventory[entry.id] = new_tree_path
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else:
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if old_path is None:
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continue
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try:
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os.rename(old_path, new_path)
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changed_inventory[entry.id] = new_tree_path
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except OSError, e:
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raise Exception ("%s is missing" % new_path)
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Exception.__init__(self, msg)
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self.filename = filename
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class NewContentsConflict(Exception):
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def __init__(self, filename):
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msg = "Conflicting contents for new file %s" % (filename)
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Exception.__init__(self, msg)
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class MissingForMerge(Exception):
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def __init__(self, filename):
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msg = "The file %s was modified, but does not exist in this tree"\
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% (filename)
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Exception.__init__(self, msg)
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class ExceptionConflictHandler(object):
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def __init__(self, dir):
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self.dir = dir
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def missing_for_rename(self, filename):
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raise MissingForRename(filename)
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def missing_for_merge(self, file_id, inventory):
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raise MissingForMerge(inventory.other.get_path(file_id))
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def new_contents_conflict(self, filename, other_contents):
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raise NewContentsConflict(filename)
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def finalize():
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pass
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"""
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if conflict_handler is None:
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conflict_handler = ExceptionConflictHandler(dir)
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temp_dir = dir+"/temp"
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os.mkdir(temp_dir)
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temp_dir = os.path.join(dir, "bzr-tree-change")
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try:
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os.mkdir(temp_dir)
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except OSError, e:
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if e.errno == errno.EEXIST:
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try:
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os.rmdir(temp_dir)
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except OSError, e:
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if e.errno == errno.ENOTEMPTY:
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raise OldFailedTreeOp()
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os.mkdir(temp_dir)
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else:
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raise
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#apply changes that don't affect filenames
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for entry in changeset.entries.itervalues():
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(source_entries, target_entries) = get_rename_entries(changeset, inventory,
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reverse)
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temp_name = rename_to_temp_delete(source_entries, inventory, dir,
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conflict_handler, reverse)
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changed_inventory = rename_to_temp_delete(source_entries, inventory, dir,
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temp_dir, conflict_handler,
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reverse)
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rename_to_new_create(temp_name, target_entries, inventory, changeset, dir,
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conflict_handler, reverse)
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rename_to_new_create(changed_inventory, target_entries, inventory,
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changeset, dir, conflict_handler, reverse)
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os.rmdir(temp_dir)
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r_inventory = invert_dict(inventory)
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new_entries, removed_entries = get_inventory_change(inventory,
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r_inventory, changeset, reverse)
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new_inventory = {}
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for path, file_id in new_entries.iteritems():
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new_inventory[file_id] = path
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for file_id in removed_entries:
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new_inventory[file_id] = None
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return new_inventory
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return changed_inventory
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def apply_changeset_tree(cset, tree, reverse=False):
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def get_inventory_change(inventory, new_inventory, cset, reverse=False):
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new_entries = {}
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remove_entries = []
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r_inventory = invert_dict(inventory)
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r_new_inventory = invert_dict(new_inventory)
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for entry in cset.entries.itervalues():
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if entry.needs_rename():
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old_path = r_inventory.get(entry.id)
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if old_path is not None:
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remove_entries.append(old_path)
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new_path = entry.get_new_path(inventory, cset)
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if new_path is None:
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remove_entries.append(entry.id)
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else:
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new_path = entry.get_new_path(inventory, cset)
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if new_path is not None:
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new_entries[new_path] = entry.id
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new_entries[new_path] = entry.id
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return new_entries, remove_entries
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return self.inventory.get(id)
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def get_name(self, id):
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return os.path.basename(self.get_path(id))
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path = self.get_path(id)
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if path is None:
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return None
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else:
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return os.path.basename(path)
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def get_dir(self, id):
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path = self.get_path(id)
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if path == "":
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return None
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if path is None:
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return None
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return os.path.dirname(path)
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def get_parent(self, id):
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if self.get_path(id) is None:
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return None
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directory = self.get_dir(id)
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if directory == '.':
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directory = './.'
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