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import bzrlib
import os
import os.path
import sys
import tempfile
import shutil
def temp_branch():
dirname = tempfile.mkdtemp("temp-branch")
return bzrlib.Branch(dirname, init=True)
def rm_branch(br):
shutil.rmtree(br.base)
def is_clean(cur_branch):
"""
Return true if no files are modifed or unknown
>>> br = temp_branch()
>>> is_clean(br)
True
>>> fooname = os.path.join(br.base, "foo")
>>> file(fooname, "wb").write("bar")
>>> is_clean(br)
False
>>> bzrlib.add.smart_add([fooname])
>>> is_clean(br)
False
>>> br.commit("added file")
>>> is_clean(br)
True
>>> rm_branch(br)
"""
old_tree = cur_branch.basis_tree()
new_tree = cur_branch.working_tree()
for path, file_class, kind, file_id in new_tree.list_files():
if file_class == '?':
return False
delta = bzrlib.compare_trees(old_tree, new_tree, want_unchanged=False)
if len(delta.added) > 0 or len(delta.removed) > 0 or \
len(delta.modified) > 0:
return False
return True
def set_pull_data(br, location, rev_id):
pull_file = file (br.controlfilename("x-pull-data"), "wb")
pull_file.write("%s\n%s\n" % (location, rev_id))
def get_pull_data(br):
"""
>>> br = temp_branch()
>>> get_pull_data(br)
(None, None)
>>> set_pull_data(br, 'http://somewhere', '888-777')
>>> get_pull_data(br)
('http://somewhere', '888-777')
>>> rm_branch(br)
"""
filename = br.controlfilename("x-pull-data")
if not os.path.exists(filename):
return (None, None)
pull_file = file (filename, "rb")
location, rev_id = [f.rstrip('\n') for f in pull_file]
return location, rev_id
def set_push_data(br, location):
push_file = file (br.controlfilename("x-push-data"), "wb")
push_file.write("%s\n" % location)
def get_push_data(br):
"""
>>> br = temp_branch()
>>> get_push_data(br) is None
True
>>> set_push_data(br, 'http://somewhere')
>>> get_push_data(br)
'http://somewhere'
>>> rm_branch(br)
"""
filename = br.controlfilename("x-push-data")
if not os.path.exists(filename):
return None
push_file = file (filename, "rb")
(location,) = [f.rstrip('\n') for f in push_file]
return location
"""
>>> shell_escape('hello')
'\h\e\l\l\o'
"""
def shell_escape(arg):
return "".join(['\\'+c for c in arg])
def safe_system(args):
"""
>>> real_system = os.system
>>> os.system = sys.stdout.write
>>> safe_system(['a', 'b', 'cd'])
\\a \\b \\c\\d
>>> os.system = real_system
"""
arg_str = " ".join([shell_escape(a) for a in args])
return os.system(arg_str)
def rsync(source, target, ssh=False, exclude_globs=()):
"""
>>> real_system = os.system
>>> os.system = sys.stdout.write
>>> rsync("a", "b")
\\r\\s\\y\\n\\c \\-\\a\\v \\-\\-\\d\\e\\l\\e\\t\\e \\a \\b
>>> rsync("a", "b", exclude_globs=("*.py",))
\\r\\s\\y\\n\\c \\-\\a\\v \\-\\-\\d\\e\\l\\e\\t\\e\
\\-\\-\\e\\x\\c\\l\\u\\d\\e \\*\\.\\p\\y \\a \\b
>>> os.system = real_system
"""
cmd = ["rsync", "-av", "--delete"]
if ssh:
cmd.extend(('-e', 'ssh'))
for exclude in exclude_globs:
cmd.extend(('--exclude', exclude))
cmd.extend((source, target))
safe_system(cmd)
exclusions = ('x-push-data', 'x-pull-data')
def pull(cur_branch, location=None, overwrite=False):
pull_location, pull_revision = get_pull_data(cur_branch)
if pull_location is not None:
if not overwrite and cur_branch.last_patch() != pull_revision:
print "Aborting: This branch has had commits, so pull would lose data."
sys.exit(1)
if location is not None:
pull_location = location
if not pull_location.endswith('/'):
pull_location+='/'
if pull_location is None:
print "No pull location saved. Please specify one on the command line."
sys.exit(1)
if not is_clean(cur_branch):
print "Error: This tree has uncommitted changes or unknown (?) files."
sys.exit(1)
print "Synchronizing with %s" % pull_location
rsync (pull_location, cur_branch.base+'/', exclude_globs=exclusions)
set_pull_data(cur_branch, pull_location, cur_branch.last_patch())
def push(cur_branch, location=None):
push_location = get_push_data(cur_branch)
if location is not None:
if not location.endswith('/'):
location += '/'
push_location = location
if push_location is None:
print "No push location saved. Please specify one on the command line."
sys.exit(1)
if not is_clean(cur_branch):
print "Error: This tree has uncommitted changes or unknown (?) files."
sys.exit(1)
print "Pushing to %s" % push_location
rsync(cur_branch.base+'/', push_location, ssh=True,
exclude_globs=exclusions)
set_push_data(cur_branch, push_location)
def run_tests():
import doctest
result = doctest.testmod()
if result[1] > 0:
if result[0] == 0:
print "All tests passed"
else:
print "No tests to run"
if __name__ == "__main__":
run_tests()
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