localrepo: remove all internal uses of localrepo.opener

localrepo: remove all internal uses of localrepo.opener

It has been replaced with localrepo.vfs. In the future we may split the vfs into
different vfs objects to access different elements of the repository.

--- a/mercurial/localrepo.py	Wed Jan 14 15:46:21 2015 -0500
+++ b/mercurial/localrepo.py	Sat Jan 10 23:02:52 2015 +0100
@@ -325,7 +325,7 @@
             self.sopener.options['maxchainlen'] = maxchainlen
 
     def _writerequirements(self):
-        reqfile = self.opener("requires", "w")
+        reqfile = self.vfs("requires", "w")
         for r in sorted(self.requirements):
             reqfile.write("%s\n" % r)
         reqfile.close()
@@ -449,7 +449,7 @@
                                    " working parent %s!\n") % short(node))
                 return nullid
 
-        return dirstate.dirstate(self.opener, self.ui, self.root, validate)
+        return dirstate.dirstate(self.vfs, self.ui, self.root, validate)
 
     def __getitem__(self, changeid):
         if changeid is None:
@@ -531,9 +531,9 @@
         prevtags = ''
         if local:
             try:
-                fp = self.opener('localtags', 'r+')
+                fp = self.vfs('localtags', 'r+')
             except IOError:
-                fp = self.opener('localtags', 'a')
+                fp = self.vfs('localtags', 'a')
             else:
                 prevtags = fp.read()
 
@@ -909,7 +909,7 @@
         self._writejournal(desc)
         renames = [(vfs, x, undoname(x)) for vfs, x in self._journalfiles()]
         rp = report and report or self.ui.warn
-        vfsmap = {'plain': self.opener} # root of .hg/
+        vfsmap = {'plain': self.vfs} # root of .hg/
         tr = transaction.transaction(rp, self.sopener, vfsmap,
                                      "journal",
                                      aftertrans(renames),
@@ -933,14 +933,14 @@
         return [(vfs, undoname(x)) for vfs, x in self._journalfiles()]
 
     def _writejournal(self, desc):
-        self.opener.write("journal.dirstate",
-                          self.opener.tryread("dirstate"))
-        self.opener.write("journal.branch",
+        self.vfs.write("journal.dirstate",
+                          self.vfs.tryread("dirstate"))
+        self.vfs.write("journal.branch",
                           encoding.fromlocal(self.dirstate.branch()))
-        self.opener.write("journal.desc",
+        self.vfs.write("journal.desc",
                           "%d\n%s\n" % (len(self), desc))
-        self.opener.write("journal.bookmarks",
-                          self.opener.tryread("bookmarks"))
+        self.vfs.write("journal.bookmarks",
+                          self.vfs.tryread("bookmarks"))
         self.sopener.write("journal.phaseroots",
                            self.sopener.tryread("phaseroots"))
 
@@ -950,7 +950,7 @@
             if self.svfs.exists("journal"):
                 self.ui.status(_("rolling back interrupted transaction\n"))
                 vfsmap = {'': self.sopener,
-                          'plain': self.opener,}
+                          'plain': self.vfs,}
                 transaction.rollback(self.sopener, vfsmap, "journal",
                                      self.ui.warn)
                 self.invalidate()
@@ -978,7 +978,7 @@
     def _rollback(self, dryrun, force):
         ui = self.ui
         try:
-            args = self.opener.read('undo.desc').splitlines()
+            args = self.vfs.read('undo.desc').splitlines()
             (oldlen, desc, detail) = (int(args[0]), args[1], None)
             if len(args) >= 3:
                 detail = args[2]
@@ -1007,7 +1007,7 @@
 
         parents = self.dirstate.parents()
         self.destroying()
-        vfsmap = {'plain': self.opener}
+        vfsmap = {'plain': self.vfs}
         transaction.rollback(self.sopener, vfsmap, 'undo', ui.warn)
         if self.vfs.exists('undo.bookmarks'):
             self.vfs.rename('undo.bookmarks', 'bookmarks')
@@ -1020,7 +1020,7 @@
         if parentgone:
             self.vfs.rename('undo.dirstate', 'dirstate')
             try:
-                branch = self.opener.read('undo.branch')
+                branch = self.vfs.read('undo.branch')
                 self.dirstate.setbranch(encoding.tolocal(branch))
             except IOError:
                 ui.warn(_('named branch could not be reset: '
@@ -1822,7 +1822,7 @@
         return "%s %s %s %s %s" % (one, two, three, four, five)
 
     def savecommitmessage(self, text):
-        fp = self.opener('last-message.txt', 'wb')
+        fp = self.vfs('last-message.txt', 'wb')
         try:
             fp.write(text)
         finally: