+# -*- encoding: utf-8 -*-
+
+__author__ = "Ćukasz Rekucki"
+__date__ = "$2009-09-25 09:35:06$"
+__doc__ = "Module documentation."
+
+import wlrepo
+
+class MercurialDocument(wlrepo.Document):
+
+ def data(self, entry):
+ path = self._revision._docname + '.' + entry
+ return self._library._filectx(path, \
+ self._revision.hgrev()).data()
+
+ def quickwrite(self, entry, data, msg, user=None):
+ user = user or self.owner
+ if user is None:
+ raise ValueError("Can't determine user.")
+
+ def write(l, r):
+ f = l._fileopen(r(entry), "w+")
+ f.write(data)
+ f.close()
+ l._fileadd(r(entry))
+
+ return self.invoke_and_commit(write, lambda d: (msg, user))
+
+ def invoke_and_commit(self, ops, before_commit):
+ lock = self._library._lock()
+ try:
+ self._library._checkout(self._revision.hgrev())
+
+ def entry_path(entry):
+ return self.id + '.' + entry
+
+ ops(self._library, entry_path)
+ message, user = before_commit(self)
+ self._library._commit(message, user)
+
+ return self._library.document(docid=self.id, user=self.owner)
+ finally:
+ lock.release()
+
+ # def commit(self, message, user):
+ # """Make a new commit."""
+ # self.invoke_and_commit(message, user, lambda *a: True)
+
+ def ismain(self):
+ return self._revision.user_name() is None
+
+ def shared(self):
+ if self.ismain():
+ return self
+ return self._library.document(docid=self._revision.document_name())
+
+
+ def take(self, user):
+ fullid = self._library.fulldocid(self.id, user)
+
+ def take_action(library, resolve):
+ # branch from latest
+ library._create_branch(fullid, parent=self._revision)
+
+ if not self._library.has_revision(fullid):
+ self.invoke_and_commit(take_action, \
+ lambda d: ("$AUTO$ File checkout.", user) )
+
+ return self._library.document_for_rev(fullid)
+
+ def update(self, user):
+ """Update parts of the document."""
+ lock = self.library._lock()
+ try:
+ if self.ismain():
+ # main revision of the document
+ return True
+
+ if self._revision.has_children():
+ # can't update non-latest revision
+ return False
+
+ sv = self.shared()
+
+ if not sv.ancestorof(self) and not self.parentof(sv):
+ self._revision.merge_with(sv._revision, user=user)
+
+ return True
+ finally:
+ lock.release()
+
+ def share(self, message):
+ lock = self.library._lock()
+ try:
+ if self.ismain():
+ return True # always shared
+
+ user = self._revision.user_name()
+
+ main = self.shared()._revision
+ local = self._revision
+
+ no_changes = True
+
+ # Case 1:
+ # * local
+ # |
+ # * <- can also be here!
+ # /|
+ # / |
+ # main * *
+ # | |
+ # The local branch has been recently updated,
+ # so we don't need to update yet again, but we need to
+ # merge down to default branch, even if there was
+ # no commit's since last update
+
+ if main.ancestorof(local):
+ print "case 1"
+ main.merge_with(local, user=user, message=message)
+ no_changes = False
+ # Case 2:
+ #
+ # main * * local
+ # |\ |
+ # | \|
+ # | *
+ # | |
+ #
+ # Default has no changes, to update from this branch
+ # since the last merge of local to default.
+ elif local.has_common_ancestor(main):
+ print "case 2"
+ if not local.parentof(main):
+ main.merge_with(local, user=user, message=message)
+ no_changes = False
+
+ # Case 3:
+ # main *
+ # |
+ # * <- this case overlaps with previos one
+ # |\
+ # | \
+ # | * local
+ # | |
+ #
+ # There was a recent merge to the defaul branch and
+ # no changes to local branch recently.
+ #
+ # Use the fact, that user is prepared to see changes, to
+ # update his branch if there are any
+ elif local.ancestorof(main):
+ print "case 3"
+ if not local.parentof(main):
+ local.merge_with(main, user=user, message='Local branch update.')
+ no_changes = False
+ else:
+ print "case 4"
+ local.merge_with(main, user=user, message='Local branch update.')
+ local = self.shelf()
+ main.merge_with(local, user=user, message=message)
+
+ print "no_changes: ", no_changes
+ return no_changes
+ finally:
+ lock.release()
+
+ def __str__(self):
+ return u"Document(%s:%s)" % (self.name, self.owner)
+
+ def __eq__(self, other):
+ return (self._revision == other._revision) and (self.name == other.name)
+