narrowspec: move module into core

Having support for parsing the narrow specification in core is
necessary for moving many other parts of narrow to core.

We do still want to harmonize the narrow spec with the sparse
spec. And the format needs to be documented. But this shouldn't
hold up the code moving to core.

Differential Revision: https://phab.mercurial-scm.org/D2201

hgext/narrow/narrowbundle2.py

@@ -24,6 +24,7 b' from mercurial import ('
     error,
     exchange,
     extensions,
+    narrowspec,
     repair,
     util,
     wireproto,
@@ -31,7 +32,6 b' from mercurial import ('
 
 from . import (
     narrowrepo,
-    narrowspec,
 )
 
 NARROWCAP = 'narrow'

hgext/narrow/narrowcommands.py

@@ -18,6 +18,7 b' from mercurial import ('
     extensions,
     hg,
     merge,
+    narrowspec,
     node,
     pycompat,
     registrar,
@@ -29,7 +30,6 b' from mercurial import ('
 from . import (
     narrowbundle2,
     narrowrepo,
-    narrowspec,
 )
 
 table = {}

hgext/narrow/narrowdirstate.py

@@ -13,11 +13,10 b' from mercurial import ('
     error,
     extensions,
     match as matchmod,
+    narrowspec,
     util as hgutil,
 )
 
-from . import narrowspec
-
 def setup(repo):
     """Add narrow spec dirstate ignore, block changes outside narrow spec."""
 

hgext/narrow/narrowrepo.py

@@ -12,12 +12,12 b' from mercurial import ('
     hg,
     localrepo,
     match as matchmod,
+    narrowspec,
     scmutil,
 )
 
 from . import (
     narrowrevlog,
-    narrowspec,
 )
 
 # When narrowing is finalized and no longer subject to format changes,

hgext/narrow/narrowwirepeer.py

@@ -12,11 +12,10 b' from mercurial import ('
     error,
     extensions,
     hg,
+    narrowspec,
     node,
 )
 
-from . import narrowspec
-
 def uisetup():
     def peersetup(ui, peer):
         # We must set up the expansion before reposetup below, since it's used

mercurial/narrowspec.py

@@ -9,8 +9,8 b' from __future__ import absolute_import'
 
 import errno
 
-from mercurial.i18n import _
-from mercurial import (
+from .i18n import _
+from . import (
     error,
     hg,
     match as matchmod,
@@ -89,7 +89,7 b' def _validatepattern(pat):'
     # We use newlines as separators in the narrowspec file, so don't allow them
     # in patterns.
     if _numlines(pat) > 1:
-        raise error.Abort('newlines are not allowed in narrowspec paths')
+        raise error.Abort(_('newlines are not allowed in narrowspec paths'))
 
     components = pat.split('/')
     if '.' in components or '..' in components:

tests/test-narrow-expanddirstate.t

@@ -51,6 +51,7 b' have this method available in narrowhg p'
   > from mercurial import extensions
   > from mercurial import localrepo
   > from mercurial import match as matchmod
+  > from mercurial import narrowspec
   > from mercurial import patch
   > from mercurial import util as hgutil
   > 
@@ -59,14 +60,13 b' have this method available in narrowhg p'
   >     return
   >   import sys
   >   newincludes = set([newincludes])
-  >   narrowhg = extensions.find('narrow')
   >   includes, excludes = repo.narrowpats
-  >   currentmatcher = narrowhg.narrowspec.match(repo.root, includes, excludes)
+  >   currentmatcher = narrowspec.match(repo.root, includes, excludes)
   >   includes = includes | newincludes
   >   if not repo.currenttransaction():
   >     ui.develwarn('expandnarrowspec called outside of transaction!')
   >   repo.setnarrowpats(includes, excludes)
-  >   newmatcher = narrowhg.narrowspec.match(repo.root, includes, excludes)
+  >   newmatcher = narrowspec.match(repo.root, includes, excludes)
   >   added = matchmod.differencematcher(newmatcher, currentmatcher)
   >   for f in repo['.'].manifest().walk(added):
   >     repo.dirstate.normallookup(f)