1 # -*- coding: utf-8 -*-
8 # Note: we have to set these before importing Mercurial
9 os.environ['HGENCODING'] = 'utf-8'
10 os.environ['HGMERGE'] = "internal:merge"
14 import mercurial.revlog
18 def urlquote(url, safe = '/'):
21 >>> urlquote(u'Za\u017c\xf3\u0142\u0107 g\u0119\u015bl\u0105 ja\u017a\u0144')
22 'Za%C5%BC%C3%B3%C5%82%C4%87_g%C4%99%C5%9Bl%C4%85_ja%C5%BA%C5%84'
24 return urllib.quote(url.replace(' ', '_').encode('utf-8', 'ignore'), safe)
30 # >>> urlunquote('Za%C5%BC%C3%B3%C5%82%C4%87_g%C4%99%C5%9Bl%C4%85_ja%C5%BA%C5%84')
31 # u'Za\u017c\xf3\u0142\u0107 g\u0119\u015bl\u0105 ja\u017a\u0144'
33 return unicode(urllib.unquote(url), 'utf-8', 'ignore').replace('_', ' ')
36 def find_repo_path(path):
37 """Go up the directory tree looking for a Mercurial repository (a directory containing a .hg subdirectory)."""
38 while not os.path.isdir(os.path.join(path, ".hg")):
39 old_path, path = path, os.path.dirname(path)
45 def locked_repo(func):
46 """A decorator for locking the repository when calling a method."""
48 def new_func(self, *args, **kwargs):
49 """Wrap the original function in locks."""
51 wlock = self.repo.wlock()
52 lock = self.repo.lock()
54 func(self, *args, **kwargs)
62 def guess_mime(file_name):
64 Guess file's mime type based on extension.
65 Default ot text/x-wiki for files without an extension.
67 >>> guess_mime('something.txt')
69 >>> guess_mime('SomePage')
71 >>> guess_mime(u'ąęśUnicodePage')
73 >>> guess_mime('image.png')
75 >>> guess_mime('style.css')
77 >>> guess_mime('archive.tar.gz')
81 mime, encoding = mimetypes.guess_type(file_name, strict = False)
83 mime = 'archive/%s' % encoding
89 class DocumentNotFound(Exception):
93 class VersionedStorage(object):
95 Provides means of storing text pages and keeping track of their
96 change history, using Mercurial repository as the storage method.
99 def __init__(self, path, charset = None):
101 Takes the path to the directory where the pages are to be kept.
102 If the directory doen't exist, it will be created. If it's inside
103 a Mercurial repository, that repository will be used, otherwise
104 a new repository will be created in it.
107 self.charset = charset or 'utf-8'
109 if not os.path.exists(self.path):
110 os.makedirs(self.path)
111 self.repo_path = find_repo_path(self.path)
113 self.ui = mercurial.ui.ui(report_untrusted = False,
114 interactive = False, quiet = True)
116 # Mercurial 1.3 changed the way we setup the ui object.
117 self.ui = mercurial.ui.ui()
119 self.ui._report_untrusted = False
120 self.ui.setconfig('ui', 'interactive', False)
121 if self.repo_path is None:
122 self.repo_path = self.path
126 self.repo_prefix = self.path[len(self.repo_path):].strip('/')
127 self.repo = mercurial.hg.repository(self.ui, self.repo_path,
131 """Close and reopen the repo, to make sure we are up to date."""
133 self.repo = mercurial.hg.repository(self.ui, self.repo_path)
135 def _file_path(self, title):
136 return os.path.join(self.path, urlquote(title, safe = ''))
138 def _title_to_file(self, title):
139 return os.path.join(self.repo_prefix, urlquote(title, safe = ''))
141 def _file_to_title(self, filename):
142 assert filename.startswith(self.repo_prefix)
143 name = filename[len(self.repo_prefix):].strip('/')
144 return urlunquote(name)
146 def __contains__(self, title):
147 return urlquote(title) in self.repo.dirstate
150 return self.all_pages()
152 def merge_changes(self, changectx, repo_file, text, user, parent):
153 """Commits and merges conflicting changes in the repository."""
154 tip_node = changectx.node()
155 filectx = changectx[repo_file].filectx(parent)
156 parent_node = filectx.changectx().node()
158 self.repo.dirstate.setparents(parent_node)
159 node = self._commit([repo_file], text, user)
161 partial = lambda filename: repo_file == filename
163 # If p1 is equal to p2, there is no work to do. Even the dirstate is correct.
164 p1, p2 = self.repo[None].parents()[0], self.repo[tip_node]
169 mercurial.merge.update(self.repo, tip_node, True, False, partial)
170 msg = 'merge of edit conflict'
171 except mercurial.util.Abort:
172 msg = 'failed merge of edit conflict'
174 self.repo.dirstate.setparents(tip_node, node)
175 # Mercurial 1.1 and later need updating the merge state
177 mercurial.merge.mergestate(self.repo).mark(repo_file, "r")
178 except (AttributeError, KeyError):
183 def save_file(self, title, file_name, author = u'', comment = u'', parent = None):
184 """Save an existing file as specified page."""
186 user = author.encode('utf-8') or u'anon'.encode('utf-8')
187 text = comment.encode('utf-8') or u'comment'.encode('utf-8')
188 repo_file = self._title_to_file(title)
189 file_path = self._file_path(title)
190 mercurial.util.rename(file_name, file_path)
191 changectx = self._changectx()
193 filectx_tip = changectx[repo_file]
194 current_page_rev = filectx_tip.filerev()
195 except mercurial.revlog.LookupError:
196 self.repo.add([repo_file])
197 current_page_rev = -1
198 if parent is not None and current_page_rev != parent:
199 msg = self.merge_changes(changectx, repo_file, text, user, parent)
201 text = msg.encode('utf-8')
202 self._commit([repo_file], text, user)
205 def _commit(self, files, text, user):
207 return self.repo.commit(files = files, text = text, user = user,
208 force = True, empty_ok = True)
210 # Mercurial 1.3 doesn't accept empty_ok or files parameter
211 match = mercurial.match.exact(self.repo_path, '', list(files))
212 return self.repo.commit(match = match, text = text, user = user,
216 def save_data(self, title, data, author = u'', comment = u'', parent = None):
217 """Save data as specified page."""
220 temp_path = tempfile.mkdtemp(dir = self.path)
221 file_path = os.path.join(temp_path, 'saved')
222 f = open(file_path, "wb")
225 self.save_file(title, file_path, author, comment, parent)
236 def save_text(self, title, text, author = u'', comment = u'', parent = None):
237 """Save text as specified page, encoded to charset."""
239 data = text.encode(self.charset)
240 self.save_data(title, data, author, comment, parent)
242 def page_text(self, title):
243 """Read unicode text of a page."""
245 data = self.open_page(title).read()
246 text = unicode(data, self.charset, 'replace')
249 def page_lines(self, page):
251 yield unicode(data, self.charset, 'replace')
254 def delete_page(self, title, author = u'', comment = u''):
255 user = author.encode('utf-8') or 'anon'
256 text = comment.encode('utf-8') or 'deleted'
257 repo_file = self._title_to_file(title)
258 file_path = self._file_path(title)
263 self.repo.remove([repo_file])
264 self._commit([repo_file], text, user)
266 def open_page(self, title):
267 if title not in self:
268 raise DocumentNotFound()
271 return open(self._file_path(title), "rb")
273 raise DocumentNotFound()
275 def page_file_meta(self, title):
276 """Get page's inode number, size and last modification time."""
279 (st_mode, st_ino, st_dev, st_nlink, st_uid, st_gid, st_size,
280 st_atime, st_mtime, st_ctime) = os.stat(self._file_path(title))
283 return st_ino, st_size, st_mtime
285 def page_meta(self, title):
286 """Get page's revision, date, last editor and his edit comment."""
287 if not title in self:
288 raise DocumentNotFound()
290 filectx_tip = self._find_filectx(title)
291 if filectx_tip is None:
292 raise DocumentNotFound()
293 rev = filectx_tip.filerev()
294 filectx = filectx_tip.filectx(rev)
295 date = datetime.datetime.fromtimestamp(filectx.date()[0])
296 author = unicode(filectx.user(), "utf-8",
297 'replace').split('<')[0].strip()
298 comment = unicode(filectx.description(), "utf-8", 'replace')
299 return rev, date, author, comment
301 def repo_revision(self):
302 return self._changectx().rev()
304 def page_mime(self, title):
306 Guess page's mime type based on corresponding file name.
307 Default ot text/x-wiki for files without an extension.
309 return guess_type(self._file_path(title))
311 def _changectx(self):
312 """Get the changectx of the tip."""
314 # This is for Mercurial 1.0
315 return self.repo.changectx()
317 # Mercurial 1.3 (and possibly earlier) needs an argument
318 return self.repo.changectx('tip')
320 def _find_filectx(self, title):
321 """Find the last revision in which the file existed."""
323 repo_file = self._title_to_file(title)
324 changectx = self._changectx()
326 while repo_file not in changectx:
329 changectx = stack.pop()
330 for parent in changectx.parents():
331 if parent != changectx:
333 return changectx[repo_file]
335 def page_history(self, title):
336 """Iterate over the page's history."""
338 filectx_tip = self._find_filectx(title)
339 if filectx_tip is None:
341 maxrev = filectx_tip.filerev()
343 for rev in range(maxrev, minrev - 1, -1):
344 filectx = filectx_tip.filectx(rev)
345 date = datetime.datetime.fromtimestamp(filectx.date()[0])
346 author = unicode(filectx.user(), "utf-8",
347 'replace').split('<')[0].strip()
348 comment = unicode(filectx.description(), "utf-8", 'replace')
349 yield rev, date, author, comment
351 def page_revision(self, title, rev):
352 """Get unicode contents of specified revision of the page."""
354 filectx_tip = self._find_filectx(title)
355 if filectx_tip is None:
356 raise DocumentNotFound()
358 data = filectx_tip.filectx(rev).data()
360 raise DocumentNotFound()
363 def revision_text(self, title, rev):
364 data = self.page_revision(title, rev)
365 text = unicode(data, self.charset, 'replace')
369 """Iterate over the history of entire wiki."""
371 changectx = self._changectx()
372 maxrev = changectx.rev()
374 for wiki_rev in range(maxrev, minrev - 1, -1):
375 change = self.repo.changectx(wiki_rev)
376 date = datetime.datetime.fromtimestamp(change.date()[0])
377 author = unicode(change.user(), "utf-8",
378 'replace').split('<')[0].strip()
379 comment = unicode(change.description(), "utf-8", 'replace')
380 for repo_file in change.files():
381 if repo_file.startswith(self.repo_prefix):
382 title = self._file_to_title(repo_file)
384 rev = change[repo_file].filerev()
385 except mercurial.revlog.LookupError:
387 yield title, rev, date, author, comment
390 """Iterate over the titles of all pages in the wiki."""
391 return [ urlunquote(filename) for filename in self.repo.dirstate]
392 #status = self.repo.status(self.repo[None], None, None, True, True, True)
393 #clean_files = status[6]
394 #for filename in clean_files:
397 def changed_since(self, rev):
398 """Return all pages that changed since specified repository revision."""
401 last = self.repo.lookup(int(rev))
403 for page in self.all_pages():
406 current = self.repo.lookup('tip')
407 status = self.repo.status(current, last)
408 modified, added, removed, deleted, unknown, ignored, clean = status
409 for filename in modified + added + removed + deleted:
410 if filename.startswith(self.repo_prefix):
411 yield self._file_to_title(filename)