Python code coverage for Tools/hg/hgtouch.py

#	count	content
1	n/a	"""Bring time stamps of generated checked-in files into the right order
2	n/a
3	n/a	A versioned configuration file .hgtouch specifies generated files, in the
4	n/a	syntax of make rules.
5	n/a
6	n/a	output: input1 input2
7	n/a
8	n/a	In addition to the dependency syntax, #-comments are supported.
9	n/a	"""
10	n/a	import errno
11	n/a	import os
12	n/a	import time
13	n/a
14	n/a	def parse_config(repo):
15	n/a	try:
16	n/a	fp = repo.wfile(".hgtouch")
17	n/a	except IOError, e:
18	n/a	if e.errno != errno.ENOENT:
19	n/a	raise
20	n/a	return {}
21	n/a	result = {}
22	n/a	with fp:
23	n/a	for line in fp:
24	n/a	# strip comments
25	n/a	line = line.split('#')[0].strip()
26	n/a	if ':' not in line:
27	n/a	continue
28	n/a	outputs, inputs = line.split(':', 1)
29	n/a	outputs = outputs.split()
30	n/a	inputs = inputs.split()
31	n/a	for o in outputs:
32	n/a	try:
33	n/a	result[o].extend(inputs)
34	n/a	except KeyError:
35	n/a	result[o] = inputs
36	n/a	return result
37	n/a
38	n/a	def check_rule(ui, repo, modified, basedir, output, inputs):
39	n/a	"""Verify that the output is newer than any of the inputs.
40	n/a	Return (status, stamp), where status is True if the update succeeded,
41	n/a	and stamp is the newest time stamp assigned to any file (might be in
42	n/a	the future).
43	n/a
44	n/a	If basedir is nonempty, it gives a directory in which the tree is to
45	n/a	be checked.
46	n/a	"""
47	n/a	f_output = repo.wjoin(os.path.join(basedir, output))
48	n/a	try:
49	n/a	o_time = os.stat(f_output).st_mtime
50	n/a	except OSError:
51	n/a	ui.warn("Generated file %s does not exist\n" % output)
52	n/a	return False, 0
53	n/a	youngest = 0 # youngest dependency
54	n/a	backdate = None
55	n/a	backdate_source = None
56	n/a	for i in inputs:
57	n/a	f_i = repo.wjoin(os.path.join(basedir, i))
58	n/a	try:
59	n/a	i_time = os.stat(f_i).st_mtime
60	n/a	except OSError:
61	n/a	ui.warn(".hgtouch input file %s does not exist\n" % i)
62	n/a	return False, 0
63	n/a	if i in modified:
64	n/a	# input is modified. Need to backdate at least to i_time
65	n/a	if backdate is None or backdate > i_time:
66	n/a	backdate = i_time
67	n/a	backdate_source = i
68	n/a	continue
69	n/a	youngest = max(i_time, youngest)
70	n/a	if backdate is not None:
71	n/a	ui.warn("Input %s for file %s locally modified\n" % (backdate_source, output))
72	n/a	# set to 1s before oldest modified input
73	n/a	backdate -= 1
74	n/a	os.utime(f_output, (backdate, backdate))
75	n/a	return False, 0
76	n/a	if youngest >= o_time:
77	n/a	ui.note("Touching %s\n" % output)
78	n/a	youngest += 1
79	n/a	os.utime(f_output, (youngest, youngest))
80	n/a	return True, youngest
81	n/a	else:
82	n/a	# Nothing to update
83	n/a	return True, 0
84	n/a
85	n/a	def do_touch(ui, repo, basedir):
86	n/a	if basedir:
87	n/a	if not os.path.isdir(repo.wjoin(basedir)):
88	n/a	ui.warn("Abort: basedir %r does not exist\n" % basedir)
89	n/a	return
90	n/a	modified = []
91	n/a	else:
92	n/a	modified = repo.status()[0]
93	n/a	dependencies = parse_config(repo)
94	n/a	success = True
95	n/a	tstamp = 0 # newest time stamp assigned
96	n/a	# try processing all rules in topological order
97	n/a	hold_back = {}
98	n/a	while dependencies:
99	n/a	output, inputs = dependencies.popitem()
100	n/a	# check whether any of the inputs is generated
101	n/a	for i in inputs:
102	n/a	if i in dependencies:
103	n/a	hold_back[output] = inputs
104	n/a	continue
105	n/a	_success, _tstamp = check_rule(ui, repo, modified, basedir, output, inputs)
106	n/a	success = success and _success
107	n/a	tstamp = max(tstamp, _tstamp)
108	n/a	# put back held back rules
109	n/a	dependencies.update(hold_back)
110	n/a	hold_back = {}
111	n/a	now = time.time()
112	n/a	if tstamp > now:
113	n/a	# wait until real time has passed the newest time stamp, to
114	n/a	# avoid having files dated in the future
115	n/a	time.sleep(tstamp-now)
116	n/a	if hold_back:
117	n/a	ui.warn("Cyclic dependency involving %s\n" % (' '.join(hold_back.keys())))
118	n/a	return False
119	n/a	return success
120	n/a
121	n/a	def touch(ui, repo, basedir):
122	n/a	"touch generated files that are older than their sources after an update."
123	n/a	do_touch(ui, repo, basedir)
124	n/a
125	n/a	cmdtable = {
126	n/a	"touch": (touch,
127	n/a	[('b', 'basedir', '', 'base dir of the tree to apply touching')],
128	n/a	"hg touch [-b BASEDIR]")
129	n/a	}