store: simplify class hierarchy

mercurial/store.py

@@ -1,126 +1,125 b''
 # store.py - repository store handling for Mercurial
 #
 # Copyright 2008 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from i18n import _
 import os, stat, osutil, util
 
 def _buildencodefun():
     e = '_'
     win_reserved = [ord(x) for x in '\\:*?"<>|']
     cmap = dict([ (chr(x), chr(x)) for x in xrange(127) ])
     for x in (range(32) + range(126, 256) + win_reserved):
         cmap[chr(x)] = "~%02x" % x
     for x in range(ord("A"), ord("Z")+1) + [ord(e)]:
         cmap[chr(x)] = e + chr(x).lower()
     dmap = {}
     for k, v in cmap.iteritems():
         dmap[v] = k
     def decode(s):
         i = 0
         while i < len(s):
             for l in xrange(1, 4):
                 try:
                     yield dmap[s[i:i+l]]
                     i += l
                     break
                 except KeyError:
                     pass
             else:
                 raise KeyError
     return (lambda s: "".join([cmap[c] for c in s]),
             lambda s: "".join(list(decode(s))))
 
 encodefilename, decodefilename = _buildencodefun()
 
 def _dirwalk(path, recurse):
     '''yields (filename, size)'''
     for e, kind, st in osutil.listdir(path, stat=True):
         pe = os.path.join(path, e)
         if kind == stat.S_IFDIR:
             if recurse:
                 for x in _dirwalk(pe, True):
                     yield x
         elif kind == stat.S_IFREG:
             yield pe, st.st_size
 
-class _store:
-    '''base class for local repository stores'''
-    def __init__(self, path):
-        self.path = path
+def _calcmode(path):
         try:
             # files in .hg/ will be created using this mode
-            mode = os.stat(self.path).st_mode
+        mode = os.stat(path).st_mode
             # avoid some useless chmods
             if (0777 & ~util._umask) == (0777 & mode):
                 mode = None
         except OSError:
             mode = None
-        self.createmode = mode
+    return mode
+
+class basicstore:
+    '''base class for local repository stores'''
+    def __init__(self, path, opener):
+        self.path = path
+        self.createmode = _calcmode(path)
+        self.opener = opener(self.path)
+        self.opener.createmode = self.createmode
 
     def join(self, f):
         return os.path.join(self.path, f)
 
     def _revlogfiles(self, relpath='', recurse=False):
         '''yields (filename, size)'''
         if relpath:
             path = os.path.join(self.path, relpath)
         else:
             path = self.path
         if not os.path.isdir(path):
             return
         striplen = len(self.path) + len(os.sep)
         filetypes = ('.d', '.i')
         for f, size in _dirwalk(path, recurse):
             if (len(f) > 2) and f[-2:] in filetypes:
                 yield util.pconvert(f[striplen:]), size
 
     def datafiles(self, reporterror=None):
         for x in self._revlogfiles('data', True):
             yield x
 
     def walk(self):
         '''yields (direncoded filename, size)'''
         # yield data files first
         for x in self.datafiles():
             yield x
         # yield manifest before changelog
         meta = util.sort(self._revlogfiles())
         meta.reverse()
         for x in meta:
             yield x
 
-class directstore(_store):
+class encodedstore(basicstore):
     def __init__(self, path, opener):
-        _store.__init__(self, path)
-        self.opener = opener(self.path)
-        self.opener.createmode = self.createmode
-
-class encodedstore(_store):
-    def __init__(self, path, opener):
-        _store.__init__(self, os.path.join(path, 'store'))
+        self.path = os.path.join(path, 'store')
+        self.createmode = _calcmode(self.path)
         self.encodefn = encodefilename
         op = opener(self.path)
         op.createmode = self.createmode
         self.opener = lambda f, *args, **kw: op(self.encodefn(f), *args, **kw)
 
     def datafiles(self, reporterror=None):
         for f, size in self._revlogfiles('data', True):
             try:
                 yield decodefilename(f), size
             except KeyError:
                 if not reporterror:
                     raise
                 reporterror(_("cannot decode filename '%s'") % f)
 
     def join(self, f):
         return os.path.join(self.path, self.encodefn(f))
 
 def store(requirements, path, opener):
-    if 'store' not in requirements:
-        return directstore(path, opener)
-    else:
+    if 'store' in requirements:
         return encodedstore(path, opener)
+    return basicstore(path, opener)

tests/test-verify

@@ -1,26 +1,26 b''
 #!/bin/sh
 
 echo % prepare repo
 hg init
 echo "some text" > FOO.txt
 echo "another text" > bar.txt
 echo "more text" > QUICK.txt
 hg add
 hg ci -d '0 0' -mtest1
 
 echo
 echo % verify
 hg verify
 
 echo
 echo % introduce some bugs in repo
 cd .hg/store/data
 mv _f_o_o.txt.i X_f_o_o.txt.i
 mv bar.txt.i xbar.txt.i
 rm _q_u_i_c_k.txt.i
 
 echo
 echo % verify
 hg verify
 
-return 0
+exit 0