1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
# Copyright (C) 2009 W. Trevor King <wking@drexel.edu>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import codecs
import os
import re
import sys
try: # import core module, Python >= 2.5
from xml.etree import ElementTree
except ImportError: # look for non-core module
from elementtree import ElementTree
from xml.sax.saxutils import unescape
import doctest
import unittest
import vcs
from vcs import VCS
def new():
return Darcs()
class Darcs(VCS):
name="darcs"
client="darcs"
versioned=True
def _vcs_help(self):
status,output,error = self._u_invoke_client("--help")
return output
def _vcs_detect(self, path):
if self._u_search_parent_directories(path, "_darcs") != None :
return True
return False
def _vcs_root(self, path):
"""Find the root of the deepest repository containing path."""
# Assume that nothing funny is going on; in particular, that we aren't
# dealing with a bare repo.
if os.path.isdir(path) != True:
path = os.path.dirname(path)
darcs_dir = self._u_search_parent_directories(path, "_darcs")
if darcs_dir == None:
return None
return os.path.dirname(darcs_dir)
def _vcs_init(self, path):
self._u_invoke_client("init", directory=path)
def _vcs_get_user_id(self):
# following http://darcs.net/manual/node4.html#SECTION00410030000000000000
# as of June 29th, 2009
if self.rootdir == None:
return None
darcs_dir = os.path.join(self.rootdir, "_darcs")
if darcs_dir != None:
for pref_file in ["author", "email"]:
pref_path = os.path.join(darcs_dir, "prefs", pref_file)
if os.path.exists(pref_path):
return self.get_file_contents(pref_path)
for env_variable in ["DARCS_EMAIL", "EMAIL"]:
if env_variable in os.environ:
return os.environ[env_variable]
return None
def _vcs_set_user_id(self, value):
if self.rootdir == None:
self.root(".")
if self.rootdir == None:
raise vcs.SettingIDnotSupported
author_path = os.path.join(self.rootdir, "_darcs", "prefs", "author")
f = codecs.open(author_path, "w", self.encoding)
f.write(value)
f.close()
def _vcs_add(self, path):
if os.path.isdir(path):
return
self._u_invoke_client("add", path)
def _vcs_remove(self, path):
if not os.path.isdir(self._u_abspath(path)):
os.remove(os.path.join(self.rootdir, path)) # darcs notices removal
def _vcs_update(self, path):
pass # darcs notices changes
def _vcs_get_file_contents(self, path, revision=None, binary=False):
if revision == None:
return VCS._vcs_get_file_contents(self, path, revision,
binary=binary)
else:
try:
return self._u_invoke_client("show", "contents", "--patch", revision, path)
except vcs.CommandError:
# Darcs versions < 2.0.0pre2 lack the "show contents" command
status,output,error = self._u_invoke_client("diff", "--unified",
"--from-patch",
revision, path)
major_patch = output
status,output,error = self._u_invoke_client("diff", "--unified",
"--patch",
revision, path)
target_patch = output
# "--output -" to be supported in GNU patch > 2.5.9
# but that hasn't been released as of June 30th, 2009.
# Rewrite path to status before the patch we want
args=["patch", "--reverse", path]
status,output,error = self._u_invoke(args, stdin=major_patch)
# Now apply the patch we want
args=["patch", path]
status,output,error = self._u_invoke(args, stdin=target_patch)
if os.path.exists(os.path.join(self.rootdir, path)) == True:
contents = VCS._vcs_get_file_contents(self, path,
binary=binary)
else:
contents = ""
# Now restore path to it's current incarnation
args=["patch", "--reverse", path]
status,output,error = self._u_invoke(args, stdin=target_patch)
args=["patch", path]
status,output,error = self._u_invoke(args, stdin=major_patch)
current_contents = VCS._vcs_get_file_contents(self, path,
binary=binary)
return contents
def _vcs_duplicate_repo(self, directory, revision=None):
if revision==None:
VCS._vcs_duplicate_repo(self, directory, revision)
else:
self._u_invoke_client("put", "--to-patch", revision, directory)
def _vcs_commit(self, commitfile, allow_empty=False):
id = self.get_user_id()
if '@' not in id:
id = "%s <%s@invalid.com>" % (id, id)
args = ['record', '--all', '--author', id, '--logfile', commitfile]
status,output,error = self._u_invoke_client(*args)
empty_strings = ["No changes!"]
if self._u_any_in_string(empty_strings, output) == True:
if allow_empty == False:
raise vcs.EmptyCommit()
# note that darcs does _not_ make an empty revision.
# this returns the last non-empty revision id...
revision = self._vcs_revision_id(-1)
else:
revline = re.compile("Finished recording patch '(.*)'")
match = revline.search(output)
assert match != None, output+error
assert len(match.groups()) == 1
revision = match.groups()[0]
return revision
def _vcs_revision_id(self, index):
status,output,error = self._u_invoke_client("changes", "--xml")
revisions = []
xml_str = output.encode("unicode_escape").replace(r"\n", "\n")
element = ElementTree.XML(xml_str)
assert element.tag == "changelog", element.tag
for patch in element.getchildren():
assert patch.tag == "patch", patch.tag
for child in patch.getchildren():
if child.tag == "name":
text = unescape(unicode(child.text).decode("unicode_escape").strip())
revisions.append(text)
revisions.reverse()
try:
return revisions[index]
except IndexError:
return None
vcs.make_vcs_testcase_subclasses(Darcs, sys.modules[__name__])
unitsuite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
suite = unittest.TestSuite([unitsuite, doctest.DocTestSuite()])
|
