fileset: use context-returning revpair()
Differential Revision: https://phab.mercurial-scm.org/D3011
# fileset.py - file set queries for mercurial
#
# Copyright 2010 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.
from __future__ import absolute_import
import re
from .i18n import _
from . import (
error,
match as matchmod,
merge,
parser,
pycompat,
registrar,
scmutil,
util,
)
from .utils import (
stringutil,
)
elements = {
# token-type: binding-strength, primary, prefix, infix, suffix
"(": (20, None, ("group", 1, ")"), ("func", 1, ")"), None),
":": (15, None, None, ("kindpat", 15), None),
"-": (5, None, ("negate", 19), ("minus", 5), None),
"not": (10, None, ("not", 10), None, None),
"!": (10, None, ("not", 10), None, None),
"and": (5, None, None, ("and", 5), None),
"&": (5, None, None, ("and", 5), None),
"or": (4, None, None, ("or", 4), None),
"|": (4, None, None, ("or", 4), None),
"+": (4, None, None, ("or", 4), None),
",": (2, None, None, ("list", 2), None),
")": (0, None, None, None, None),
"symbol": (0, "symbol", None, None, None),
"string": (0, "string", None, None, None),
"end": (0, None, None, None, None),
}
keywords = {'and', 'or', 'not'}
globchars = ".*{}[]?/\\_"
def tokenize(program):
pos, l = 0, len(program)
program = pycompat.bytestr(program)
while pos < l:
c = program[pos]
if c.isspace(): # skip inter-token whitespace
pass
elif c in "(),-:|&+!": # handle simple operators
yield (c, None, pos)
elif (c in '"\'' or c == 'r' and
program[pos:pos + 2] in ("r'", 'r"')): # handle quoted strings
if c == 'r':
pos += 1
c = program[pos]
decode = lambda x: x
else:
decode = parser.unescapestr
pos += 1
s = pos
while pos < l: # find closing quote
d = program[pos]
if d == '\\': # skip over escaped characters
pos += 2
continue
if d == c:
yield ('string', decode(program[s:pos]), s)
break
pos += 1
else:
raise error.ParseError(_("unterminated string"), s)
elif c.isalnum() or c in globchars or ord(c) > 127:
# gather up a symbol/keyword
s = pos
pos += 1
while pos < l: # find end of symbol
d = program[pos]
if not (d.isalnum() or d in globchars or ord(d) > 127):
break
pos += 1
sym = program[s:pos]
if sym in keywords: # operator keywords
yield (sym, None, s)
else:
yield ('symbol', sym, s)
pos -= 1
else:
raise error.ParseError(_("syntax error"), pos)
pos += 1
yield ('end', None, pos)
def parse(expr):
p = parser.parser(elements)
tree, pos = p.parse(tokenize(expr))
if pos != len(expr):
raise error.ParseError(_("invalid token"), pos)
return tree
def getsymbol(x):
if x and x[0] == 'symbol':
return x[1]
raise error.ParseError(_('not a symbol'))
def getstring(x, err):
if x and (x[0] == 'string' or x[0] == 'symbol'):
return x[1]
raise error.ParseError(err)
def _getkindpat(x, y, allkinds, err):
kind = getsymbol(x)
pat = getstring(y, err)
if kind not in allkinds:
raise error.ParseError(_("invalid pattern kind: %s") % kind)
return '%s:%s' % (kind, pat)
def getpattern(x, allkinds, err):
if x and x[0] == 'kindpat':
return _getkindpat(x[1], x[2], allkinds, err)
return getstring(x, err)
def getset(mctx, x):
if not x:
raise error.ParseError(_("missing argument"))
return methods[x[0]](mctx, *x[1:])
def stringset(mctx, x):
m = mctx.matcher([x])
return [f for f in mctx.subset if m(f)]
def kindpatset(mctx, x, y):
return stringset(mctx, _getkindpat(x, y, matchmod.allpatternkinds,
_("pattern must be a string")))
def andset(mctx, x, y):
return getset(mctx.narrow(getset(mctx, x)), y)
def orset(mctx, x, y):
# needs optimizing
xl = getset(mctx, x)
yl = getset(mctx, y)
return xl + [f for f in yl if f not in xl]
def notset(mctx, x):
s = set(getset(mctx, x))
return [r for r in mctx.subset if r not in s]
def minusset(mctx, x, y):
xl = getset(mctx, x)
yl = set(getset(mctx, y))
return [f for f in xl if f not in yl]
def negateset(mctx, x):
raise error.ParseError(_("can't use negate operator in this context"))
def listset(mctx, a, b):
raise error.ParseError(_("can't use a list in this context"),
hint=_('see hg help "filesets.x or y"'))
# symbols are callable like:
# fun(mctx, x)
# with:
# mctx - current matchctx instance
# x - argument in tree form
symbols = {}
# filesets using matchctx.status()
_statuscallers = set()
# filesets using matchctx.existing()
_existingcallers = set()
predicate = registrar.filesetpredicate()
@predicate('modified()', callstatus=True)
def modified(mctx, x):
"""File that is modified according to :hg:`status`.
"""
# i18n: "modified" is a keyword
getargs(x, 0, 0, _("modified takes no arguments"))
s = set(mctx.status().modified)
return [f for f in mctx.subset if f in s]
@predicate('added()', callstatus=True)
def added(mctx, x):
"""File that is added according to :hg:`status`.
"""
# i18n: "added" is a keyword
getargs(x, 0, 0, _("added takes no arguments"))
s = set(mctx.status().added)
return [f for f in mctx.subset if f in s]
@predicate('removed()', callstatus=True)
def removed(mctx, x):
"""File that is removed according to :hg:`status`.
"""
# i18n: "removed" is a keyword
getargs(x, 0, 0, _("removed takes no arguments"))
s = set(mctx.status().removed)
return [f for f in mctx.subset if f in s]
@predicate('deleted()', callstatus=True)
def deleted(mctx, x):
"""Alias for ``missing()``.
"""
# i18n: "deleted" is a keyword
getargs(x, 0, 0, _("deleted takes no arguments"))
s = set(mctx.status().deleted)
return [f for f in mctx.subset if f in s]
@predicate('missing()', callstatus=True)
def missing(mctx, x):
"""File that is missing according to :hg:`status`.
"""
# i18n: "missing" is a keyword
getargs(x, 0, 0, _("missing takes no arguments"))
s = set(mctx.status().deleted)
return [f for f in mctx.subset if f in s]
@predicate('unknown()', callstatus=True)
def unknown(mctx, x):
"""File that is unknown according to :hg:`status`. These files will only be
considered if this predicate is used.
"""
# i18n: "unknown" is a keyword
getargs(x, 0, 0, _("unknown takes no arguments"))
s = set(mctx.status().unknown)
return [f for f in mctx.subset if f in s]
@predicate('ignored()', callstatus=True)
def ignored(mctx, x):
"""File that is ignored according to :hg:`status`. These files will only be
considered if this predicate is used.
"""
# i18n: "ignored" is a keyword
getargs(x, 0, 0, _("ignored takes no arguments"))
s = set(mctx.status().ignored)
return [f for f in mctx.subset if f in s]
@predicate('clean()', callstatus=True)
def clean(mctx, x):
"""File that is clean according to :hg:`status`.
"""
# i18n: "clean" is a keyword
getargs(x, 0, 0, _("clean takes no arguments"))
s = set(mctx.status().clean)
return [f for f in mctx.subset if f in s]
def func(mctx, a, b):
funcname = getsymbol(a)
if funcname in symbols:
enabled = mctx._existingenabled
mctx._existingenabled = funcname in _existingcallers
try:
return symbols[funcname](mctx, b)
finally:
mctx._existingenabled = enabled
keep = lambda fn: getattr(fn, '__doc__', None) is not None
syms = [s for (s, fn) in symbols.items() if keep(fn)]
raise error.UnknownIdentifier(funcname, syms)
def getlist(x):
if not x:
return []
if x[0] == 'list':
return getlist(x[1]) + [x[2]]
return [x]
def getargs(x, min, max, err):
l = getlist(x)
if len(l) < min or len(l) > max:
raise error.ParseError(err)
return l
@predicate('binary()', callexisting=True)
def binary(mctx, x):
"""File that appears to be binary (contains NUL bytes).
"""
# i18n: "binary" is a keyword
getargs(x, 0, 0, _("binary takes no arguments"))
return [f for f in mctx.existing() if mctx.ctx[f].isbinary()]
@predicate('exec()', callexisting=True)
def exec_(mctx, x):
"""File that is marked as executable.
"""
# i18n: "exec" is a keyword
getargs(x, 0, 0, _("exec takes no arguments"))
return [f for f in mctx.existing() if mctx.ctx.flags(f) == 'x']
@predicate('symlink()', callexisting=True)
def symlink(mctx, x):
"""File that is marked as a symlink.
"""
# i18n: "symlink" is a keyword
getargs(x, 0, 0, _("symlink takes no arguments"))
return [f for f in mctx.existing() if mctx.ctx.flags(f) == 'l']
@predicate('resolved()')
def resolved(mctx, x):
"""File that is marked resolved according to :hg:`resolve -l`.
"""
# i18n: "resolved" is a keyword
getargs(x, 0, 0, _("resolved takes no arguments"))
if mctx.ctx.rev() is not None:
return []
ms = merge.mergestate.read(mctx.ctx.repo())
return [f for f in mctx.subset if f in ms and ms[f] == 'r']
@predicate('unresolved()')
def unresolved(mctx, x):
"""File that is marked unresolved according to :hg:`resolve -l`.
"""
# i18n: "unresolved" is a keyword
getargs(x, 0, 0, _("unresolved takes no arguments"))
if mctx.ctx.rev() is not None:
return []
ms = merge.mergestate.read(mctx.ctx.repo())
return [f for f in mctx.subset if f in ms and ms[f] == 'u']
@predicate('hgignore()')
def hgignore(mctx, x):
"""File that matches the active .hgignore pattern.
"""
# i18n: "hgignore" is a keyword
getargs(x, 0, 0, _("hgignore takes no arguments"))
ignore = mctx.ctx.repo().dirstate._ignore
return [f for f in mctx.subset if ignore(f)]
@predicate('portable()')
def portable(mctx, x):
"""File that has a portable name. (This doesn't include filenames with case
collisions.)
"""
# i18n: "portable" is a keyword
getargs(x, 0, 0, _("portable takes no arguments"))
checkwinfilename = util.checkwinfilename
return [f for f in mctx.subset if checkwinfilename(f) is None]
@predicate('grep(regex)', callexisting=True)
def grep(mctx, x):
"""File contains the given regular expression.
"""
try:
# i18n: "grep" is a keyword
r = re.compile(getstring(x, _("grep requires a pattern")))
except re.error as e:
raise error.ParseError(_('invalid match pattern: %s') % e)
return [f for f in mctx.existing() if r.search(mctx.ctx[f].data())]
def _sizetomax(s):
try:
s = s.strip().lower()
for k, v in util._sizeunits:
if s.endswith(k):
# max(4k) = 5k - 1, max(4.5k) = 4.6k - 1
n = s[:-len(k)]
inc = 1.0
if "." in n:
inc /= 10 ** len(n.split(".")[1])
return int((float(n) + inc) * v) - 1
# no extension, this is a precise value
return int(s)
except ValueError:
raise error.ParseError(_("couldn't parse size: %s") % s)
def sizematcher(x):
"""Return a function(size) -> bool from the ``size()`` expression"""
# i18n: "size" is a keyword
expr = getstring(x, _("size requires an expression")).strip()
if '-' in expr: # do we have a range?
a, b = expr.split('-', 1)
a = util.sizetoint(a)
b = util.sizetoint(b)
return lambda x: x >= a and x <= b
elif expr.startswith("<="):
a = util.sizetoint(expr[2:])
return lambda x: x <= a
elif expr.startswith("<"):
a = util.sizetoint(expr[1:])
return lambda x: x < a
elif expr.startswith(">="):
a = util.sizetoint(expr[2:])
return lambda x: x >= a
elif expr.startswith(">"):
a = util.sizetoint(expr[1:])
return lambda x: x > a
else:
a = util.sizetoint(expr)
b = _sizetomax(expr)
return lambda x: x >= a and x <= b
@predicate('size(expression)', callexisting=True)
def size(mctx, x):
"""File size matches the given expression. Examples:
- size('1k') - files from 1024 to 2047 bytes
- size('< 20k') - files less than 20480 bytes
- size('>= .5MB') - files at least 524288 bytes
- size('4k - 1MB') - files from 4096 bytes to 1048576 bytes
"""
m = sizematcher(x)
return [f for f in mctx.existing() if m(mctx.ctx[f].size())]
@predicate('encoding(name)', callexisting=True)
def encoding(mctx, x):
"""File can be successfully decoded with the given character
encoding. May not be useful for encodings other than ASCII and
UTF-8.
"""
# i18n: "encoding" is a keyword
enc = getstring(x, _("encoding requires an encoding name"))
s = []
for f in mctx.existing():
d = mctx.ctx[f].data()
try:
d.decode(enc)
except LookupError:
raise error.Abort(_("unknown encoding '%s'") % enc)
except UnicodeDecodeError:
continue
s.append(f)
return s
@predicate('eol(style)', callexisting=True)
def eol(mctx, x):
"""File contains newlines of the given style (dos, unix, mac). Binary
files are excluded, files with mixed line endings match multiple
styles.
"""
# i18n: "eol" is a keyword
enc = getstring(x, _("eol requires a style name"))
s = []
for f in mctx.existing():
d = mctx.ctx[f].data()
if stringutil.binary(d):
continue
if (enc == 'dos' or enc == 'win') and '\r\n' in d:
s.append(f)
elif enc == 'unix' and re.search('(?<!\r)\n', d):
s.append(f)
elif enc == 'mac' and re.search('\r(?!\n)', d):
s.append(f)
return s
@predicate('copied()')
def copied(mctx, x):
"""File that is recorded as being copied.
"""
# i18n: "copied" is a keyword
getargs(x, 0, 0, _("copied takes no arguments"))
s = []
for f in mctx.subset:
if f in mctx.ctx:
p = mctx.ctx[f].parents()
if p and p[0].path() != f:
s.append(f)
return s
@predicate('revs(revs, pattern)')
def revs(mctx, x):
"""Evaluate set in the specified revisions. If the revset match multiple
revs, this will return file matching pattern in any of the revision.
"""
# i18n: "revs" is a keyword
r, x = getargs(x, 2, 2, _("revs takes two arguments"))
# i18n: "revs" is a keyword
revspec = getstring(r, _("first argument to revs must be a revision"))
repo = mctx.ctx.repo()
revs = scmutil.revrange(repo, [revspec])
found = set()
result = []
for r in revs:
ctx = repo[r]
for f in getset(mctx.switch(ctx, _buildstatus(ctx, x)), x):
if f not in found:
found.add(f)
result.append(f)
return result
@predicate('status(base, rev, pattern)')
def status(mctx, x):
"""Evaluate predicate using status change between ``base`` and
``rev``. Examples:
- ``status(3, 7, added())`` - matches files added from "3" to "7"
"""
repo = mctx.ctx.repo()
# i18n: "status" is a keyword
b, r, x = getargs(x, 3, 3, _("status takes three arguments"))
# i18n: "status" is a keyword
baseerr = _("first argument to status must be a revision")
baserevspec = getstring(b, baseerr)
if not baserevspec:
raise error.ParseError(baseerr)
reverr = _("second argument to status must be a revision")
revspec = getstring(r, reverr)
if not revspec:
raise error.ParseError(reverr)
basectx, ctx = scmutil.revpair(repo, [baserevspec, revspec])
return getset(mctx.switch(ctx, _buildstatus(ctx, x, basectx=basectx)), x)
@predicate('subrepo([pattern])')
def subrepo(mctx, x):
"""Subrepositories whose paths match the given pattern.
"""
# i18n: "subrepo" is a keyword
getargs(x, 0, 1, _("subrepo takes at most one argument"))
ctx = mctx.ctx
sstate = sorted(ctx.substate)
if x:
pat = getpattern(x, matchmod.allpatternkinds,
# i18n: "subrepo" is a keyword
_("subrepo requires a pattern or no arguments"))
fast = not matchmod.patkind(pat)
if fast:
def m(s):
return (s == pat)
else:
m = matchmod.match(ctx.repo().root, '', [pat], ctx=ctx)
return [sub for sub in sstate if m(sub)]
else:
return [sub for sub in sstate]
methods = {
'string': stringset,
'symbol': stringset,
'kindpat': kindpatset,
'and': andset,
'or': orset,
'minus': minusset,
'negate': negateset,
'list': listset,
'group': getset,
'not': notset,
'func': func,
}
class matchctx(object):
def __init__(self, ctx, subset, status=None):
self.ctx = ctx
self.subset = subset
self._status = status
self._existingenabled = False
def status(self):
return self._status
def matcher(self, patterns):
return self.ctx.match(patterns)
def filter(self, files):
return [f for f in files if f in self.subset]
def existing(self):
assert self._existingenabled, 'unexpected existing() invocation'
if self._status is not None:
removed = set(self._status[3])
unknown = set(self._status[4] + self._status[5])
else:
removed = set()
unknown = set()
return (f for f in self.subset
if (f in self.ctx and f not in removed) or f in unknown)
def narrow(self, files):
return matchctx(self.ctx, self.filter(files), self._status)
def switch(self, ctx, status=None):
subset = self.filter(_buildsubset(ctx, status))
return matchctx(ctx, subset, status)
class fullmatchctx(matchctx):
"""A match context where any files in any revisions should be valid"""
def __init__(self, ctx, status=None):
subset = _buildsubset(ctx, status)
super(fullmatchctx, self).__init__(ctx, subset, status)
def switch(self, ctx, status=None):
return fullmatchctx(ctx, status)
# filesets using matchctx.switch()
_switchcallers = [
'revs',
'status',
]
def _intree(funcs, tree):
if isinstance(tree, tuple):
if tree[0] == 'func' and tree[1][0] == 'symbol':
if tree[1][1] in funcs:
return True
if tree[1][1] in _switchcallers:
# arguments won't be evaluated in the current context
return False
for s in tree[1:]:
if _intree(funcs, s):
return True
return False
def _buildsubset(ctx, status):
if status:
subset = []
for c in status:
subset.extend(c)
return subset
else:
return list(ctx.walk(ctx.match([])))
def getfileset(ctx, expr):
tree = parse(expr)
return getset(fullmatchctx(ctx, _buildstatus(ctx, tree)), tree)
def _buildstatus(ctx, tree, basectx=None):
# do we need status info?
# temporaty boolean to simplify the next conditional
purewdir = ctx.rev() is None and basectx is None
if (_intree(_statuscallers, tree) or
# Using matchctx.existing() on a workingctx requires us to check
# for deleted files.
(purewdir and _intree(_existingcallers, tree))):
unknown = _intree(['unknown'], tree)
ignored = _intree(['ignored'], tree)
r = ctx.repo()
if basectx is None:
basectx = ctx.p1()
return r.status(basectx, ctx,
unknown=unknown, ignored=ignored, clean=True)
else:
return None
def prettyformat(tree):
return parser.prettyformat(tree, ('string', 'symbol'))
def loadpredicate(ui, extname, registrarobj):
"""Load fileset predicates from specified registrarobj
"""
for name, func in registrarobj._table.iteritems():
symbols[name] = func
if func._callstatus:
_statuscallers.add(name)
if func._callexisting:
_existingcallers.add(name)
# load built-in predicates explicitly to setup _statuscallers/_existingcallers
loadpredicate(None, None, predicate)
# tell hggettext to extract docstrings from these functions:
i18nfunctions = symbols.values()