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It is desirable to "derive" templates from the provided templates. A simple way to do this is e.g. %include map-cmdline.default in your own mapfile. Then you only have to redefine a few templates instead of copying over the whole thing. This %include mechanism already works for the built-in templates because by default it *only* looks for files that are in the same directory as the including mapfile. With this changeset, config grows an option to add more include paths for config files.
165 lines
5.9 KiB
Python
165 lines
5.9 KiB
Python
# config.py - configuration parsing for Mercurial
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#
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# Copyright 2009 Matt Mackall <mpm@selenic.com> and others
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from i18n import _
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import error, util
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import os, errno
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class config(object):
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def __init__(self, data=None, includepaths=[]):
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self._data = {}
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self._source = {}
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self._unset = []
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self._includepaths = includepaths
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if data:
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for k in data._data:
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self._data[k] = data[k].copy()
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self._source = data._source.copy()
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def copy(self):
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return config(self)
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def __contains__(self, section):
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return section in self._data
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def __getitem__(self, section):
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return self._data.get(section, {})
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def __iter__(self):
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for d in self.sections():
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yield d
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def update(self, src):
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for s, n in src._unset:
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if s in self and n in self._data[s]:
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del self._data[s][n]
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del self._source[(s, n)]
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for s in src:
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if s not in self:
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self._data[s] = util.sortdict()
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self._data[s].update(src._data[s])
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self._source.update(src._source)
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def get(self, section, item, default=None):
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return self._data.get(section, {}).get(item, default)
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def backup(self, section, item):
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"""return a tuple allowing restore to reinstall a previous value
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The main reason we need it is because it handles the "no data" case.
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"""
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try:
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value = self._data[section][item]
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source = self.source(section, item)
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return (section, item, value, source)
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except KeyError:
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return (section, item)
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def source(self, section, item):
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return self._source.get((section, item), "")
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def sections(self):
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return sorted(self._data.keys())
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def items(self, section):
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return self._data.get(section, {}).items()
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def set(self, section, item, value, source=""):
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if section not in self:
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self._data[section] = util.sortdict()
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self._data[section][item] = value
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if source:
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self._source[(section, item)] = source
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def restore(self, data):
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"""restore data returned by self.backup"""
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if len(data) == 4:
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# restore old data
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section, item, value, source = data
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self._data[section][item] = value
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self._source[(section, item)] = source
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else:
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# no data before, remove everything
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section, item = data
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if section in self._data:
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self._data[section].pop(item, None)
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self._source.pop((section, item), None)
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def parse(self, src, data, sections=None, remap=None, include=None):
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sectionre = util.re.compile(r'\[([^\[]+)\]')
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itemre = util.re.compile(r'([^=\s][^=]*?)\s*=\s*(.*\S|)')
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contre = util.re.compile(r'\s+(\S|\S.*\S)\s*$')
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emptyre = util.re.compile(r'(;|#|\s*$)')
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commentre = util.re.compile(r'(;|#)')
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unsetre = util.re.compile(r'%unset\s+(\S+)')
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includere = util.re.compile(r'%include\s+(\S|\S.*\S)\s*$')
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section = ""
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item = None
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line = 0
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cont = False
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for l in data.splitlines(True):
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line += 1
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if line == 1 and l.startswith('\xef\xbb\xbf'):
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# Someone set us up the BOM
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l = l[3:]
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if cont:
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if commentre.match(l):
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continue
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m = contre.match(l)
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if m:
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if sections and section not in sections:
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continue
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v = self.get(section, item) + "\n" + m.group(1)
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self.set(section, item, v, "%s:%d" % (src, line))
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continue
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item = None
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cont = False
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m = includere.match(l)
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if m and include:
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expanded = util.expandpath(m.group(1))
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includepaths = [os.path.dirname(src)] + self._includepaths
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for base in includepaths:
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inc = os.path.normpath(os.path.join(base, expanded))
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try:
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include(inc, remap=remap, sections=sections)
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break
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except IOError, inst:
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if inst.errno != errno.ENOENT:
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raise error.ParseError(_("cannot include %s (%s)")
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% (inc, inst.strerror),
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"%s:%s" % (src, line))
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continue
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if emptyre.match(l):
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continue
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m = sectionre.match(l)
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if m:
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section = m.group(1)
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if remap:
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section = remap.get(section, section)
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if section not in self:
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self._data[section] = util.sortdict()
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continue
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m = itemre.match(l)
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if m:
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item = m.group(1)
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cont = True
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if sections and section not in sections:
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continue
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self.set(section, item, m.group(2), "%s:%d" % (src, line))
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continue
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m = unsetre.match(l)
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if m:
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name = m.group(1)
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if sections and section not in sections:
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continue
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if self.get(section, name) is not None:
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del self._data[section][name]
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self._unset.append((section, name))
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continue
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raise error.ParseError(l.rstrip(), ("%s:%s" % (src, line)))
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def read(self, path, fp=None, sections=None, remap=None):
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if not fp:
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fp = util.posixfile(path)
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self.parse(path, fp.read(), sections, remap, self.read)
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