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"""Import upstream source into a branch"""
from bz2 import BZ2File
import errno
import os
from StringIO import StringIO
import stat
import tarfile
import zipfile
from bzrlib import generate_ids
from bzrlib.bzrdir import BzrDir
from bzrlib.errors import NoSuchFile, BzrCommandError, NotBranchError
from bzrlib.osutils import (pathjoin, isdir, file_iterator, basename,
file_kind, splitpath)
from bzrlib.trace import warning
from bzrlib.transform import TreeTransform, resolve_conflicts, cook_conflicts
from bzrlib.workingtree import WorkingTree
from bzrlib.plugins.bzrtools.bzrtools import open_from_url
class ZipFileWrapper(object):
def __init__(self, fileobj, mode):
self.zipfile = zipfile.ZipFile(fileobj, mode)
def getmembers(self):
for info in self.zipfile.infolist():
yield ZipInfoWrapper(self.zipfile, info)
def extractfile(self, infowrapper):
return StringIO(self.zipfile.read(infowrapper.name))
def add(self, filename):
if isdir(filename):
self.zipfile.writestr(filename+'/', '')
else:
self.zipfile.write(filename)
def close(self):
self.zipfile.close()
class ZipInfoWrapper(object):
def __init__(self, zipfile, info):
self.info = info
self.type = None
self.name = info.filename
self.zipfile = zipfile
self.mode = 0666
def isdir(self):
# Really? Eeeew!
return bool(self.name.endswith('/'))
def isreg(self):
# Really? Eeeew!
return not self.isdir()
class DirWrapper(object):
def __init__(self, fileobj, mode='r'):
assert mode == 'r', mode
self.root = os.path.realpath(fileobj.read())
def __repr__(self):
return 'DirWrapper(%r)' % self.root
def getmembers(self, subdir=None):
if subdir is not None:
mydir = pathjoin(self.root, subdir)
else:
mydir = self.root
for child in os.listdir(mydir):
if subdir is not None:
child = pathjoin(subdir, child)
fi = FileInfo(self.root, child)
yield fi
if fi.isdir():
for v in self.getmembers(child):
yield v
def extractfile(self, member):
return open(member.fullpath)
class FileInfo(object):
def __init__(self, root, filepath):
self.fullpath = pathjoin(root, filepath)
self.root = root
if filepath != '':
self.name = pathjoin(basename(root), filepath)
else:
print 'root %r' % root
self.name = basename(root)
self.type = None
stat = os.lstat(self.fullpath)
self.mode = stat.st_mode
if self.isdir():
self.name += '/'
def __repr__(self):
return 'FileInfo(%r)' % self.name
def isreg(self):
return stat.S_ISREG(self.mode)
def isdir(self):
return stat.S_ISDIR(self.mode)
def issym(self):
if stat.S_ISLNK(self.mode):
self.linkname = os.readlink(self.fullpath)
return True
else:
return False
def top_path(path):
"""Return the top directory given in a path."""
components = splitpath(path)
if len(components) > 0:
return components[0]
else:
return ''
def common_directory(names):
"""Determine a single directory prefix from a list of names"""
possible_prefix = None
for name in names:
name_top = top_path(name)
if name_top == '':
return None
if possible_prefix is None:
possible_prefix = name_top
else:
if name_top != possible_prefix:
return None
return possible_prefix
def do_directory(tt, trans_id, tree, relative_path, path):
if isdir(path) and tree.path2id(relative_path) is not None:
tt.cancel_deletion(trans_id)
else:
tt.create_directory(trans_id)
def add_implied_parents(implied_parents, path):
"""Update the set of implied parents from a path"""
parent = os.path.dirname(path)
if parent in implied_parents:
return
implied_parents.add(parent)
add_implied_parents(implied_parents, parent)
def names_of_files(tar_file):
for member in tar_file.getmembers():
if member.type != "g":
yield member.name
def should_ignore(relative_path):
return top_path(relative_path) == '.bzr'
def import_tar(tree, tar_input):
"""Replace the contents of a working directory with tarfile contents.
The tarfile may be a gzipped stream. File ids will be updated.
"""
tar_file = tarfile.open('lala', 'r', tar_input)
import_archive(tree, tar_file)
def import_zip(tree, zip_input):
zip_file = ZipFileWrapper(zip_input, 'r')
import_archive(tree, zip_file)
def import_dir(tree, dir_input):
dir_file = DirWrapper(dir_input)
import_archive(tree, dir_file)
def import_archive(tree, archive_file):
prefix = common_directory(names_of_files(archive_file))
tt = TreeTransform(tree)
removed = set()
for path, entry in tree.inventory.iter_entries():
if entry.parent_id is None:
continue
trans_id = tt.trans_id_tree_path(path)
tt.delete_contents(trans_id)
removed.add(path)
added = set()
implied_parents = set()
seen = set()
for member in archive_file.getmembers():
if member.type == 'g':
# type 'g' is a header
continue
relative_path = member.name
if prefix is not None:
relative_path = relative_path[len(prefix)+1:]
relative_path = relative_path.rstrip('/')
if relative_path == '':
continue
if should_ignore(relative_path):
continue
add_implied_parents(implied_parents, relative_path)
trans_id = tt.trans_id_tree_path(relative_path)
added.add(relative_path.rstrip('/'))
path = tree.abspath(relative_path)
if member.name in seen:
if tt.final_kind(trans_id) == 'file':
tt.set_executability(None, trans_id)
tt.cancel_creation(trans_id)
seen.add(member.name)
if member.isreg():
tt.create_file(file_iterator(archive_file.extractfile(member)),
trans_id)
executable = (member.mode & 0111) != 0
tt.set_executability(executable, trans_id)
elif member.isdir():
do_directory(tt, trans_id, tree, relative_path, path)
elif member.issym():
tt.create_symlink(member.linkname, trans_id)
else:
continue
if tt.tree_file_id(trans_id) is None:
name = basename(member.name.rstrip('/'))
file_id = generate_ids.gen_file_id(name)
tt.version_file(file_id, trans_id)
for relative_path in implied_parents.difference(added):
if relative_path == "":
continue
trans_id = tt.trans_id_tree_path(relative_path)
path = tree.abspath(relative_path)
do_directory(tt, trans_id, tree, relative_path, path)
if tt.tree_file_id(trans_id) is None:
tt.version_file(trans_id, trans_id)
added.add(relative_path)
for path in removed.difference(added):
tt.unversion_file(tt.trans_id_tree_path(path))
for conflict in cook_conflicts(resolve_conflicts(tt), tt):
warning(conflict)
tt.apply()
def do_import(source, tree_directory=None):
"""Implementation of import command. Intended for UI only"""
if tree_directory is not None:
try:
tree = WorkingTree.open(tree_directory)
except NotBranchError:
if not os.path.exists(tree_directory):
os.mkdir(tree_directory)
branch = BzrDir.create_branch_convenience(tree_directory)
tree = branch.bzrdir.open_workingtree()
else:
tree = WorkingTree.open_containing('.')[0]
tree.lock_write()
try:
if tree.changes_from(tree.basis_tree()).has_changed():
raise BzrCommandError("Working tree has uncommitted changes.")
if (source.endswith('.tar') or source.endswith('.tar.gz') or
source.endswith('.tar.bz2')) or source.endswith('.tgz'):
try:
tar_input = open_from_url(source)
if source.endswith('.bz2'):
tar_input = StringIO(tar_input.read().decode('bz2'))
except IOError, e:
if e.errno == errno.ENOENT:
raise NoSuchFile(source)
try:
import_tar(tree, tar_input)
finally:
tar_input.close()
elif source.endswith('.zip'):
import_zip(tree, open_from_url(source))
elif file_kind(source) == 'directory':
s = StringIO(source)
s.seek(0)
import_dir(tree, s)
else:
raise BzrCommandError('Unhandled import source')
finally:
tree.unlock()
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