* Poprawiony freeze() dla głownego okna.
[redakcja.git] / lib / wlrepo / mercurial_backend / document.py
1 # -*- encoding: utf-8 -*-
2
3 import logging
4 log = logging.getLogger('ral.mercurial')
5
6 __author__ = "Łukasz Rekucki"
7 __date__ = "$2009-09-25 09:35:06$"
8 __doc__ = "Module documentation."
9
10 import wlrepo
11 import mercurial.error
12 import re
13
14 import logging
15 log = logging.getLogger('wlrepo.document')
16
17 class MercurialDocument(wlrepo.Document):
18
19     def data(self, entry):
20         path = self._library._sanitize_string(self.id + u'.' + entry)
21         try:
22             return self._library._filectx(path, \
23                 self._revision.hgrev()).data().decode('utf-8')
24         except mercurial.error.LookupError, e:
25             fl = [x.decode('utf-8') for x in self._revision._changectx]            
26             raise wlrepo.EntryNotFound(self._revision, path.decode('utf-8'), fl)
27
28     def quickwrite(self, entry, data, msg, user=None):
29         user = user or self.owner
30
31         if isinstance(data, unicode):
32             data = data.encode('utf-8')
33             
34         user = self._library._sanitize_string(user)
35         msg = self._library._sanitize_string(msg)
36         entry = self._library._sanitize_string(entry)
37
38         if user is None:
39             raise ValueError("Can't determine user.")
40         
41         def write(l, r):
42             f = l._fileopen(r(entry), "w+")
43             f.write(data)
44             f.close()
45             l._fileadd(r(entry))            
46
47         return self.invoke_and_commit(write, lambda d: (msg, \
48                 self._library._sanitize_string(self.owner)) )
49
50     def invoke_and_commit(self, ops, commit_info):
51         lock = self._library.lock()
52         try:            
53             self._library._checkout(self._revision.hgrev())
54
55             def entry_path(entry):
56                 return self._library._sanitize_string(self.id + u'.' + entry)
57             
58             ops(self._library, entry_path)
59             message, user = commit_info(self)
60
61             message = self._library._sanitize_string(message)
62             user = self._library._sanitize_string(user)
63
64             self._library._commit(message, user)
65             try:
66                 return self._library.document(docid=self.id, user=user)
67             except Exception, e:
68                 # rollback the last commit
69                 self._library._rollback()
70                 raise e
71         finally:
72             lock.release()
73         
74     # def commit(self, message, user):
75     #    """Make a new commit."""
76     #    self.invoke_and_commit(message, user, lambda *a: True)
77
78     def ismain(self):
79         return self._revision.user_name is None
80
81     def islatest(self):
82         return (self == self.latest())
83
84     def shared(self):
85         if self.ismain():
86             return self
87         
88         return self._library.document(docid=self.id)
89
90     def latest(self):
91         return self._library.document(docid=self.id, user=self.owner)
92
93     def take(self, user):
94         fullid = self._library.fulldocid(self.id, user)
95
96         def take_action(library, resolve):
97             # branch from latest 
98             library._set_branchname(fullid)
99
100         if not self._library.has_revision(fullid):
101             log.info("Checking out document %s" % fullid)
102
103             self.invoke_and_commit(take_action, \
104                 lambda d: ("$AUTO$ File checkout.", user) )
105
106         return self._library.document_for_rev(fullid)
107
108     def up_to_date(self):
109         return self.ismain() or (\
110             self.shared().ancestorof(self) )
111         
112             
113     def update(self, user):
114         """Update parts of the document."""
115         lock = self.library.lock()
116         try:
117             if self.ismain():
118                 # main revision of the document
119                 return (True, False)
120             
121             if self._revision.has_children():
122                 log.info('Update failed: has children.')
123                 # can't update non-latest revision
124                 return (False, False)
125
126             sv = self.shared()
127
128             if self.parentof(sv):
129                 return (True, False)
130
131             if sv.ancestorof(self):
132                 return (True, False)
133
134             return self._revision.merge_with(sv._revision, user=user,
135                 message="$AUTO$ Personal branch update.")
136         finally:
137             lock.release()  
138
139     def share(self, message):
140         lock = self.library.lock()
141         try:            
142             if self.ismain():
143                 return False # always shared
144
145             user = self._revision.user_name
146             main = self.shared()._revision
147             local = self._revision            
148
149             # Case 1:
150             #         * local
151             #         |
152             #         * <- can also be here!
153             #        /|
154             #       / |
155             # main *  *
156             #      |  |
157             # The local branch has been recently updated,
158             # so we don't need to update yet again, but we need to
159             # merge down to default branch, even if there was
160             # no commit's since last update
161             #
162             # This is actually the only good case!
163             if main.ancestorof(local):
164                 success, changed = main.merge_with(local, user=user, message=message)
165
166                 if not success:
167                     raise LibraryException("Merge failed.")
168
169                 return changed
170             
171             # Case 2:
172             # main *
173             #      |
174             #      * <- this case overlaps with previos one
175             #      |\
176             #      | \
177             #      |  * local
178             #      |  |
179             #
180             # There was a recent merge to the defaul branch and
181             # no changes to local branch recently.
182             #
183             # Nothing to do
184             elif local.ancestorof(main):                
185                 return False
186
187             # In all other cases, the local needs an update
188             # and possibly conflict resolution, so fail
189             raise LibraryExcepton("Document not prepared for sharing.")
190         
191         finally:
192             lock.release()
193
194
195     def has_conflict_marks(self):
196         return re.search("^(?:<<<<<<< .*|=======|>>>>>>> .*)$", self.data('xml'), re.MULTILINE)        
197
198     def __unicode__(self):
199         return u"Document(%s:%s)" % (self.id, self.owner)
200
201     def __str__(self):
202         return self.__unicode__().encode('utf-8')
203     
204     def __eq__(self, other):
205         return (self._revision == other._revision)
206