Mercurial > hg
view mercurial/minifileset.py @ 35983:f540b6448738
largefiles: register wire protocol commands with modern APIs
The wireproto.wireprotocommand decorator is the preferred mechanism for
registering wire protocol commands. In addition, wireproto.commands
is no longer a 2-tuple and use of that 2-tuple API should be considered
deprecated.
This commit ports largefiles to use wireproto.wireprotocommand()
and ports to the "commandentry" API.
As part of this, the definition of the "lheads" wire protocol
command is moved to the proper stanza.
We stop short of actually using wireprotocommand as a decorator
in order to minimize churn. We should ideally move wire protocol
commands to the registrar mechanism. But that's for another
changeset.
Differential Revision: https://phab.mercurial-scm.org/D2018
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 01 Feb 2018 18:48:52 -0800 |
parents | d5288b966e2f |
children | 9c98cb30f4de |
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# minifileset.py - a simple language to select files # # Copyright 2017 Facebook, Inc. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import from .i18n import _ from . import ( error, fileset, ) def _compile(tree): if not tree: raise error.ParseError(_("missing argument")) op = tree[0] if op in {'symbol', 'string', 'kindpat'}: name = fileset.getpattern(tree, {'path'}, _('invalid file pattern')) if name.startswith('**'): # file extension test, ex. "**.tar.gz" ext = name[2:] for c in ext: if c in '*{}[]?/\\': raise error.ParseError(_('reserved character: %s') % c) return lambda n, s: n.endswith(ext) elif name.startswith('path:'): # directory or full path test p = name[5:] # prefix pl = len(p) f = lambda n, s: n.startswith(p) and (len(n) == pl or n[pl] == '/') return f raise error.ParseError(_("unsupported file pattern: %s") % name, hint=_('paths must be prefixed with "path:"')) elif op == 'or': func1 = _compile(tree[1]) func2 = _compile(tree[2]) return lambda n, s: func1(n, s) or func2(n, s) elif op == 'and': func1 = _compile(tree[1]) func2 = _compile(tree[2]) return lambda n, s: func1(n, s) and func2(n, s) elif op == 'not': return lambda n, s: not _compile(tree[1])(n, s) elif op == 'group': return _compile(tree[1]) elif op == 'func': symbols = { 'all': lambda n, s: True, 'none': lambda n, s: False, 'size': lambda n, s: fileset.sizematcher(tree[2])(s), } name = fileset.getsymbol(tree[1]) if name in symbols: return symbols[name] raise error.UnknownIdentifier(name, symbols.keys()) elif op == 'minus': # equivalent to 'x and not y' func1 = _compile(tree[1]) func2 = _compile(tree[2]) return lambda n, s: func1(n, s) and not func2(n, s) elif op == 'negate': raise error.ParseError(_("can't use negate operator in this context")) elif op == 'list': raise error.ParseError(_("can't use a list in this context"), hint=_('see hg help "filesets.x or y"')) raise error.ProgrammingError('illegal tree: %r' % (tree,)) def compile(text): """generate a function (path, size) -> bool from filter specification. "text" could contain the operators defined by the fileset language for common logic operations, and parenthesis for grouping. The supported path tests are '**.extname' for file extension test, and '"path:dir/subdir"' for prefix test. The ``size()`` predicate is borrowed from filesets to test file size. The predicates ``all()`` and ``none()`` are also supported. '(**.php & size(">10MB")) | **.zip | (path:bin & !path:bin/README)' for example, will catch all php files whose size is greater than 10 MB, all files whose name ends with ".zip", and all files under "bin" in the repo root except for "bin/README". """ tree = fileset.parse(text) return _compile(tree)