Mercurial > hg
view mercurial/minifileset.py @ 44382:f0027a3dd7cb
revlog-compression: update the config to be a list
format.revlog-compression is now a list of engine, the first supported one is to
be used. Doing this have several benefits:
1) this is fully backward compatible, config using a single entry will be read
as a single item list, not changing any behavior.
2) This open the way to use zstd by default without impacting platform were it
is not available. This will be done in a later changesets.
Using zstd provide a significant performance boost explained in : bb271ec2fbfb.
However zstd is not available in some cases, A notable example is the `--pure`
version of Mercurial which doesn't come with zstd support.
Differential Revision: https://phab.mercurial-scm.org/D8148
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Wed, 19 Feb 2020 17:30:04 +0100 |
parents | 687b865b95ad |
children | 6000f5b25c9b |
line wrap: on
line source
# 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, filesetlang, pycompat, ) def _sizep(x): # i18n: "size" is a keyword expr = filesetlang.getstring(x, _(b"size requires an expression")) return fileset.sizematcher(expr) def _compile(tree): if not tree: raise error.ParseError(_(b"missing argument")) op = tree[0] if op == b'withstatus': return _compile(tree[1]) elif op in {b'symbol', b'string', b'kindpat'}: name = filesetlang.getpattern( tree, {b'path'}, _(b'invalid file pattern') ) if name.startswith(b'**'): # file extension test, ex. "**.tar.gz" ext = name[2:] for c in pycompat.bytestr(ext): if c in b'*{}[]?/\\': raise error.ParseError(_(b'reserved character: %s') % c) return lambda n, s: n.endswith(ext) elif name.startswith(b'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 : pl + 1] == b'/' ) return f raise error.ParseError( _(b"unsupported file pattern: %s") % name, hint=_(b'paths must be prefixed with "path:"'), ) elif op in {b'or', b'patterns'}: funcs = [_compile(x) for x in tree[1:]] return lambda n, s: any(f(n, s) for f in funcs) elif op == b'and': func1 = _compile(tree[1]) func2 = _compile(tree[2]) return lambda n, s: func1(n, s) and func2(n, s) elif op == b'not': return lambda n, s: not _compile(tree[1])(n, s) elif op == b'func': symbols = { b'all': lambda n, s: True, b'none': lambda n, s: False, b'size': lambda n, s: _sizep(tree[2])(s), } name = filesetlang.getsymbol(tree[1]) if name in symbols: return symbols[name] raise error.UnknownIdentifier(name, symbols.keys()) elif op == b'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 == b'list': raise error.ParseError( _(b"can't use a list in this context"), hint=_(b'see \'hg help "filesets.x or y"\''), ) raise error.ProgrammingError(b'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 = filesetlang.parse(text) tree = filesetlang.analyze(tree) tree = filesetlang.optimize(tree) return _compile(tree)