mirror of
https://github.com/facebook/sapling.git
synced 2024-10-10 16:57:49 +03:00
db877f58df
This was leading to some difficult to trace problems because the values were set in one place, but then blew up much later in the program. Exploding violently with an assertion seems reasonable here.
182 lines
6.5 KiB
Python
182 lines
6.5 KiB
Python
# config.py - configuration parsing for Mercurial
|
|
#
|
|
# Copyright 2009 Matt Mackall <mpm@selenic.com> and others
|
|
#
|
|
# 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 errno
|
|
import os
|
|
|
|
from .i18n import _
|
|
from . import (
|
|
error,
|
|
pycompat,
|
|
util,
|
|
)
|
|
|
|
class config(object):
|
|
def __init__(self, data=None, includepaths=[]):
|
|
self._data = {}
|
|
self._source = {}
|
|
self._unset = []
|
|
self._includepaths = includepaths
|
|
if data:
|
|
for k in data._data:
|
|
self._data[k] = data[k].copy()
|
|
self._source = data._source.copy()
|
|
def copy(self):
|
|
return config(self)
|
|
def __contains__(self, section):
|
|
return section in self._data
|
|
def hasitem(self, section, item):
|
|
return item in self._data.get(section, {})
|
|
def __getitem__(self, section):
|
|
return self._data.get(section, {})
|
|
def __iter__(self):
|
|
for d in self.sections():
|
|
yield d
|
|
def update(self, src):
|
|
for s, n in src._unset:
|
|
if s in self and n in self._data[s]:
|
|
del self._data[s][n]
|
|
del self._source[(s, n)]
|
|
for s in src:
|
|
if s not in self:
|
|
self._data[s] = util.sortdict()
|
|
self._data[s].update(src._data[s])
|
|
self._source.update(src._source)
|
|
def get(self, section, item, default=None):
|
|
return self._data.get(section, {}).get(item, default)
|
|
|
|
def backup(self, section, item):
|
|
"""return a tuple allowing restore to reinstall a previous value
|
|
|
|
The main reason we need it is because it handles the "no data" case.
|
|
"""
|
|
try:
|
|
value = self._data[section][item]
|
|
source = self.source(section, item)
|
|
return (section, item, value, source)
|
|
except KeyError:
|
|
return (section, item)
|
|
|
|
def source(self, section, item):
|
|
return self._source.get((section, item), "")
|
|
def sections(self):
|
|
return sorted(self._data.keys())
|
|
def items(self, section):
|
|
return self._data.get(section, {}).items()
|
|
def set(self, section, item, value, source=""):
|
|
if pycompat.ispy3:
|
|
assert not isinstance(value, str), (
|
|
'config values may not be unicode strings on Python 3')
|
|
if section not in self:
|
|
self._data[section] = util.sortdict()
|
|
self._data[section][item] = value
|
|
if source:
|
|
self._source[(section, item)] = source
|
|
|
|
def restore(self, data):
|
|
"""restore data returned by self.backup"""
|
|
if len(data) == 4:
|
|
# restore old data
|
|
section, item, value, source = data
|
|
self._data[section][item] = value
|
|
self._source[(section, item)] = source
|
|
else:
|
|
# no data before, remove everything
|
|
section, item = data
|
|
if section in self._data:
|
|
self._data[section].pop(item, None)
|
|
self._source.pop((section, item), None)
|
|
|
|
def parse(self, src, data, sections=None, remap=None, include=None):
|
|
sectionre = util.re.compile(br'\[([^\[]+)\]')
|
|
itemre = util.re.compile(br'([^=\s][^=]*?)\s*=\s*(.*\S|)')
|
|
contre = util.re.compile(br'\s+(\S|\S.*\S)\s*$')
|
|
emptyre = util.re.compile(br'(;|#|\s*$)')
|
|
commentre = util.re.compile(br'(;|#)')
|
|
unsetre = util.re.compile(br'%unset\s+(\S+)')
|
|
includere = util.re.compile(br'%include\s+(\S|\S.*\S)\s*$')
|
|
section = ""
|
|
item = None
|
|
line = 0
|
|
cont = False
|
|
|
|
for l in data.splitlines(True):
|
|
line += 1
|
|
if line == 1 and l.startswith('\xef\xbb\xbf'):
|
|
# Someone set us up the BOM
|
|
l = l[3:]
|
|
if cont:
|
|
if commentre.match(l):
|
|
continue
|
|
m = contre.match(l)
|
|
if m:
|
|
if sections and section not in sections:
|
|
continue
|
|
v = self.get(section, item) + "\n" + m.group(1)
|
|
self.set(section, item, v, "%s:%d" % (src, line))
|
|
continue
|
|
item = None
|
|
cont = False
|
|
m = includere.match(l)
|
|
|
|
if m and include:
|
|
expanded = util.expandpath(m.group(1))
|
|
includepaths = [os.path.dirname(src)] + self._includepaths
|
|
|
|
for base in includepaths:
|
|
inc = os.path.normpath(os.path.join(base, expanded))
|
|
|
|
try:
|
|
include(inc, remap=remap, sections=sections)
|
|
break
|
|
except IOError as inst:
|
|
if inst.errno != errno.ENOENT:
|
|
raise error.ParseError(_("cannot include %s (%s)")
|
|
% (inc, inst.strerror),
|
|
"%s:%s" % (src, line))
|
|
continue
|
|
if emptyre.match(l):
|
|
continue
|
|
m = sectionre.match(l)
|
|
if m:
|
|
section = m.group(1)
|
|
if remap:
|
|
section = remap.get(section, section)
|
|
if section not in self:
|
|
self._data[section] = util.sortdict()
|
|
continue
|
|
m = itemre.match(l)
|
|
if m:
|
|
item = m.group(1)
|
|
cont = True
|
|
if sections and section not in sections:
|
|
continue
|
|
self.set(section, item, m.group(2), "%s:%d" % (src, line))
|
|
continue
|
|
m = unsetre.match(l)
|
|
if m:
|
|
name = m.group(1)
|
|
if sections and section not in sections:
|
|
continue
|
|
if self.get(section, name) is not None:
|
|
del self._data[section][name]
|
|
self._unset.append((section, name))
|
|
continue
|
|
|
|
raise error.ParseError(l.rstrip(), ("%s:%s" % (src, line)))
|
|
|
|
def read(self, path, fp=None, sections=None, remap=None):
|
|
if not fp:
|
|
fp = util.posixfile(path, 'rb')
|
|
assert getattr(fp, 'mode', r'rb') == r'rb', (
|
|
'config files must be opened in binary mode, got fp=%r mode=%r' % (
|
|
fp, fp.mode))
|
|
self.parse(path, fp.read(),
|
|
sections=sections, remap=remap, include=self.read)
|