match: add a subclass for dirstate normalizing of the matched patterns
This class is only needed on case insensitive filesystems, and only
for wdir context matches. It allows the user to not match the case of
the items in the filesystem- especially for naming directories, which
dirstate doesn't handle[1]. Making dirstate handle mismatched
directory cases is too expensive[2].
Since dirstate doesn't apply to committed csets, this is only created by
overriding basectx.match() in workingctx, and only on icasefs. The default
arguments have been dropped, because the ctx must be passed to the matcher in
order to function.
For operations that can apply to both wdir and some other context, this ends up
normalizing the filename to the case as it exists in the filesystem, and using
that case for the lookup in the other context. See the diff example in the
test.
Previously, given a directory with an inexact case:
- add worked as expected
- diff, forget and status would silently ignore the request
- files would exit with 1
- commit, revert and remove would fail (even when the commands leading up to
them worked):
$ hg ci -m "AbCDef" capsdir1/capsdir
abort: CapsDir1/CapsDir: no match under directory!
$ hg revert -r '.^' capsdir1/capsdir
capsdir1\capsdir: no such file in rev
64dae27060b7
$ hg remove capsdir1/capsdir
not removing capsdir1\capsdir: no tracked files
[1]
Globs are normalized, so that the -I and -X don't need to be specified with a
case match. Without that, the second last remove (with -X) removes the files,
leaving nothing for the last remove. However, specifying the files as
'glob:**.Txt' does not work. Perhaps this requires 're.IGNORECASE'?
There are only a handful of places that create matchers directly, instead of
being routed through the context.match() method. Some may benefit from changing
over to using ctx.match() as a factory function:
revset.checkstatus()
revset.contains()
revset.filelog()
revset._matchfiles()
localrepository._loadfilter()
ignore.ignore()
fileset.subrepo()
filemerge._picktool()
overrides.addlargefiles()
lfcommands.lfconvert()
kwtemplate.__init__()
eolfile.__init__()
eolfile.checkrev()
acl.buildmatch()
Currently, a toplevel subrepo can be named with an inexact case. However, the
path auditor gets in the way of naming _anything_ in the subrepo if the top
level case doesn't match. That is trickier to handle, because there's the user
provided case, the case in the filesystem, and the case stored in .hgsub. This
can be fixed next cycle.
--- a/tests/test-subrepo-deep-nested-change.t
+++ b/tests/test-subrepo-deep-nested-change.t
@@ -170,8 +170,15 @@
R sub1/sub2/test.txt
$ hg update -Cq
$ touch sub1/sub2/folder/bar
+#if icasefs
+ $ hg addremove Sub1/sub2
+ abort: path 'Sub1\sub2' is inside nested repo 'Sub1'
+ [255]
+ $ hg -q addremove sub1/sub2
+#else
$ hg addremove sub1/sub2
adding sub1/sub2/folder/bar (glob)
+#endif
$ hg status -S
A sub1/sub2/folder/bar
? foo/bar/abc
The narrowmatcher class may need to be tweaked when that is fixed.
[1] http://www.selenic.com/pipermail/mercurial-devel/2015-April/068183.html
[2] http://www.selenic.com/pipermail/mercurial-devel/2015-April/068191.html
# extensions.py - extension handling for mercurial
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import imp, os
import util, cmdutil, error
from i18n import _, gettext
_extensions = {}
_aftercallbacks = {}
_order = []
_ignore = ['hbisect', 'bookmarks', 'parentrevspec', 'interhg', 'inotify']
def extensions(ui=None):
if ui:
def enabled(name):
for format in ['%s', 'hgext.%s']:
conf = ui.config('extensions', format % name)
if conf is not None and not conf.startswith('!'):
return True
else:
enabled = lambda name: True
for name in _order:
module = _extensions[name]
if module and enabled(name):
yield name, module
def find(name):
'''return module with given extension name'''
mod = None
try:
mod = _extensions[name]
except KeyError:
for k, v in _extensions.iteritems():
if k.endswith('.' + name) or k.endswith('/' + name):
mod = v
break
if not mod:
raise KeyError(name)
return mod
def loadpath(path, module_name):
module_name = module_name.replace('.', '_')
path = util.normpath(util.expandpath(path))
if os.path.isdir(path):
# module/__init__.py style
d, f = os.path.split(path)
fd, fpath, desc = imp.find_module(f, [d])
return imp.load_module(module_name, fd, fpath, desc)
else:
try:
return imp.load_source(module_name, path)
except IOError, exc:
if not exc.filename:
exc.filename = path # python does not fill this
raise
def load(ui, name, path):
if name.startswith('hgext.') or name.startswith('hgext/'):
shortname = name[6:]
else:
shortname = name
if shortname in _ignore:
return None
if shortname in _extensions:
return _extensions[shortname]
_extensions[shortname] = None
if path:
# the module will be loaded in sys.modules
# choose an unique name so that it doesn't
# conflicts with other modules
mod = loadpath(path, 'hgext.%s' % name)
else:
def importh(name):
mod = __import__(name)
components = name.split('.')
for comp in components[1:]:
mod = getattr(mod, comp)
return mod
try:
mod = importh("hgext.%s" % name)
except ImportError, err:
ui.debug('could not import hgext.%s (%s): trying %s\n'
% (name, err, name))
mod = importh(name)
_extensions[shortname] = mod
_order.append(shortname)
for fn in _aftercallbacks.get(shortname, []):
fn(loaded=True)
return mod
def loadall(ui):
result = ui.configitems("extensions")
newindex = len(_order)
for (name, path) in result:
if path:
if path[0] == '!':
continue
try:
load(ui, name, path)
except KeyboardInterrupt:
raise
except Exception, inst:
if path:
ui.warn(_("*** failed to import extension %s from %s: %s\n")
% (name, path, inst))
else:
ui.warn(_("*** failed to import extension %s: %s\n")
% (name, inst))
for name in _order[newindex:]:
uisetup = getattr(_extensions[name], 'uisetup', None)
if uisetup:
uisetup(ui)
for name in _order[newindex:]:
extsetup = getattr(_extensions[name], 'extsetup', None)
if extsetup:
try:
extsetup(ui)
except TypeError:
if extsetup.func_code.co_argcount != 0:
raise
extsetup() # old extsetup with no ui argument
# Call aftercallbacks that were never met.
for shortname in _aftercallbacks:
if shortname in _extensions:
continue
for fn in _aftercallbacks[shortname]:
fn(loaded=False)
def afterloaded(extension, callback):
'''Run the specified function after a named extension is loaded.
If the named extension is already loaded, the callback will be called
immediately.
If the named extension never loads, the callback will be called after
all extensions have been loaded.
The callback receives the named argument ``loaded``, which is a boolean
indicating whether the dependent extension actually loaded.
'''
if extension in _extensions:
callback(loaded=True)
else:
_aftercallbacks.setdefault(extension, []).append(callback)
def bind(func, *args):
'''Partial function application
Returns a new function that is the partial application of args and kwargs
to func. For example,
f(1, 2, bar=3) === bind(f, 1)(2, bar=3)'''
assert callable(func)
def closure(*a, **kw):
return func(*(args + a), **kw)
return closure
def wrapcommand(table, command, wrapper, synopsis=None, docstring=None):
'''Wrap the command named `command' in table
Replace command in the command table with wrapper. The wrapped command will
be inserted into the command table specified by the table argument.
The wrapper will be called like
wrapper(orig, *args, **kwargs)
where orig is the original (wrapped) function, and *args, **kwargs
are the arguments passed to it.
Optionally append to the command synopsis and docstring, used for help.
For example, if your extension wraps the ``bookmarks`` command to add the
flags ``--remote`` and ``--all`` you might call this function like so:
synopsis = ' [-a] [--remote]'
docstring = """
The ``remotenames`` extension adds the ``--remote`` and ``--all`` (``-a``)
flags to the bookmarks command. Either flag will show the remote bookmarks
known to the repository; ``--remote`` will also supress the output of the
local bookmarks.
"""
extensions.wrapcommand(commands.table, 'bookmarks', exbookmarks,
synopsis, docstring)
'''
assert callable(wrapper)
aliases, entry = cmdutil.findcmd(command, table)
for alias, e in table.iteritems():
if e is entry:
key = alias
break
origfn = entry[0]
wrap = bind(util.checksignature(wrapper), util.checksignature(origfn))
wrap.__module__ = getattr(origfn, '__module__')
doc = getattr(origfn, '__doc__')
if docstring is not None:
doc += docstring
wrap.__doc__ = doc
newentry = list(entry)
newentry[0] = wrap
if synopsis is not None:
newentry[2] += synopsis
table[key] = tuple(newentry)
return entry
def wrapfunction(container, funcname, wrapper):
'''Wrap the function named funcname in container
Replace the funcname member in the given container with the specified
wrapper. The container is typically a module, class, or instance.
The wrapper will be called like
wrapper(orig, *args, **kwargs)
where orig is the original (wrapped) function, and *args, **kwargs
are the arguments passed to it.
Wrapping methods of the repository object is not recommended since
it conflicts with extensions that extend the repository by
subclassing. All extensions that need to extend methods of
localrepository should use this subclassing trick: namely,
reposetup() should look like
def reposetup(ui, repo):
class myrepo(repo.__class__):
def whatever(self, *args, **kwargs):
[...extension stuff...]
super(myrepo, self).whatever(*args, **kwargs)
[...extension stuff...]
repo.__class__ = myrepo
In general, combining wrapfunction() with subclassing does not
work. Since you cannot control what other extensions are loaded by
your end users, you should play nicely with others by using the
subclass trick.
'''
assert callable(wrapper)
origfn = getattr(container, funcname)
assert callable(origfn)
setattr(container, funcname, bind(wrapper, origfn))
return origfn
def _disabledpaths(strip_init=False):
'''find paths of disabled extensions. returns a dict of {name: path}
removes /__init__.py from packages if strip_init is True'''
import hgext
extpath = os.path.dirname(os.path.abspath(hgext.__file__))
try: # might not be a filesystem path
files = os.listdir(extpath)
except OSError:
return {}
exts = {}
for e in files:
if e.endswith('.py'):
name = e.rsplit('.', 1)[0]
path = os.path.join(extpath, e)
else:
name = e
path = os.path.join(extpath, e, '__init__.py')
if not os.path.exists(path):
continue
if strip_init:
path = os.path.dirname(path)
if name in exts or name in _order or name == '__init__':
continue
exts[name] = path
return exts
def _moduledoc(file):
'''return the top-level python documentation for the given file
Loosely inspired by pydoc.source_synopsis(), but rewritten to
handle triple quotes and to return the whole text instead of just
the synopsis'''
result = []
line = file.readline()
while line[:1] == '#' or not line.strip():
line = file.readline()
if not line:
break
start = line[:3]
if start == '"""' or start == "'''":
line = line[3:]
while line:
if line.rstrip().endswith(start):
line = line.split(start)[0]
if line:
result.append(line)
break
elif not line:
return None # unmatched delimiter
result.append(line)
line = file.readline()
else:
return None
return ''.join(result)
def _disabledhelp(path):
'''retrieve help synopsis of a disabled extension (without importing)'''
try:
file = open(path)
except IOError:
return
else:
doc = _moduledoc(file)
file.close()
if doc: # extracting localized synopsis
return gettext(doc).splitlines()[0]
else:
return _('(no help text available)')
def disabled():
'''find disabled extensions from hgext. returns a dict of {name: desc}'''
try:
from hgext import __index__
return dict((name, gettext(desc))
for name, desc in __index__.docs.iteritems()
if name not in _order)
except (ImportError, AttributeError):
pass
paths = _disabledpaths()
if not paths:
return {}
exts = {}
for name, path in paths.iteritems():
doc = _disabledhelp(path)
if doc:
exts[name] = doc
return exts
def disabledext(name):
'''find a specific disabled extension from hgext. returns desc'''
try:
from hgext import __index__
if name in _order: # enabled
return
else:
return gettext(__index__.docs.get(name))
except (ImportError, AttributeError):
pass
paths = _disabledpaths()
if name in paths:
return _disabledhelp(paths[name])
def disabledcmd(ui, cmd, strict=False):
'''import disabled extensions until cmd is found.
returns (cmdname, extname, module)'''
paths = _disabledpaths(strip_init=True)
if not paths:
raise error.UnknownCommand(cmd)
def findcmd(cmd, name, path):
try:
mod = loadpath(path, 'hgext.%s' % name)
except Exception:
return
try:
aliases, entry = cmdutil.findcmd(cmd,
getattr(mod, 'cmdtable', {}), strict)
except (error.AmbiguousCommand, error.UnknownCommand):
return
except Exception:
ui.warn(_('warning: error finding commands in %s\n') % path)
ui.traceback()
return
for c in aliases:
if c.startswith(cmd):
cmd = c
break
else:
cmd = aliases[0]
return (cmd, name, mod)
ext = None
# first, search for an extension with the same name as the command
path = paths.pop(cmd, None)
if path:
ext = findcmd(cmd, cmd, path)
if not ext:
# otherwise, interrogate each extension until there's a match
for name, path in paths.iteritems():
ext = findcmd(cmd, name, path)
if ext:
break
if ext and 'DEPRECATED' not in ext.__doc__:
return ext
raise error.UnknownCommand(cmd)
def enabled(shortname=True):
'''return a dict of {name: desc} of extensions'''
exts = {}
for ename, ext in extensions():
doc = (gettext(ext.__doc__) or _('(no help text available)'))
if shortname:
ename = ename.split('.')[-1]
exts[ename] = doc.splitlines()[0].strip()
return exts
def moduleversion(module):
'''return version information from given module as a string'''
if (util.safehasattr(module, 'getversion')
and callable(module.getversion)):
version = module.getversion()
elif util.safehasattr(module, '__version__'):
version = module.__version__
else:
version = ''
if isinstance(version, (list, tuple)):
version = '.'.join(str(o) for o in version)
return version