ada2a8494a
dict objects provide an __iter__ method for the iteration which gives you the keys, so calling keys directly is unnecessary, and isn't really a best practice. The only time you really need to call the keys is if there's a danger of the dict changing out from underneith you, either due to external forces or due to modification of the iterable in the loop. Iterations over os.environ are apparently subject to such changes, so they must continue to use keys(). As an aside, also switches a couple spots to using sorted() rather than creating a temporary list with keys() and sorting that. (Bitbake rev: 5b6ccb16c6e71e23dac6920cd2df994d67c2587b) Signed-off-by: Chris Larson <clarson@mvista.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
290 lines
8.4 KiB
Python
290 lines
8.4 KiB
Python
# ex:ts=4:sw=4:sts=4:et
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# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
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"""
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BitBake Smart Dictionary Implementation
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Functions for interacting with the data structure used by the
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BitBake build tools.
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"""
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# Copyright (C) 2003, 2004 Chris Larson
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# Copyright (C) 2004, 2005 Seb Frankengul
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# Copyright (C) 2005, 2006 Holger Hans Peter Freyther
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# Copyright (C) 2005 Uli Luckas
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# Copyright (C) 2005 ROAD GmbH
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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# Based on functions from the base bb module, Copyright 2003 Holger Schurig
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import copy, os, re, sys, time, types
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import bb
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from bb import utils, methodpool
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from COW import COWDictBase
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from new import classobj
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__setvar_keyword__ = ["_append","_prepend"]
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__setvar_regexp__ = re.compile('(?P<base>.*?)(?P<keyword>_append|_prepend)(_(?P<add>.*))?')
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__expand_var_regexp__ = re.compile(r"\${[^{}]+}")
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__expand_python_regexp__ = re.compile(r"\${@.+?}")
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class DataSmart:
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def __init__(self, special = COWDictBase.copy(), seen = COWDictBase.copy() ):
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self.dict = {}
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# cookie monster tribute
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self._special_values = special
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self._seen_overrides = seen
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self.expand_cache = {}
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def expand(self,s, varname):
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def var_sub(match):
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key = match.group()[2:-1]
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if varname and key:
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if varname == key:
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raise Exception("variable %s references itself!" % varname)
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var = self.getVar(key, 1)
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if var is not None:
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return var
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else:
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return match.group()
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def python_sub(match):
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import bb
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code = match.group()[3:-1]
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locals()['d'] = self
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s = eval(code)
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if type(s) == types.IntType: s = str(s)
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return s
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if type(s) is not types.StringType: # sanity check
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return s
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if varname and varname in self.expand_cache:
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return self.expand_cache[varname]
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while s.find('${') != -1:
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olds = s
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try:
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s = __expand_var_regexp__.sub(var_sub, s)
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s = __expand_python_regexp__.sub(python_sub, s)
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if s == olds: break
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if type(s) is not types.StringType: # sanity check
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bb.msg.error(bb.msg.domain.Data, 'expansion of %s returned non-string %s' % (olds, s))
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except KeyboardInterrupt:
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raise
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except:
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bb.msg.note(1, bb.msg.domain.Data, "%s:%s while evaluating:\n%s" % (sys.exc_info()[0], sys.exc_info()[1], s))
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raise
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if varname:
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self.expand_cache[varname] = s
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return s
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def initVar(self, var):
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self.expand_cache = {}
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if not var in self.dict:
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self.dict[var] = {}
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def _findVar(self,var):
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_dest = self.dict
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while (_dest and var not in _dest):
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if not "_data" in _dest:
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_dest = None
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break
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_dest = _dest["_data"]
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if _dest and var in _dest:
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return _dest[var]
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return None
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def _makeShadowCopy(self, var):
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if var in self.dict:
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return
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local_var = self._findVar(var)
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if local_var:
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self.dict[var] = copy.copy(local_var)
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else:
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self.initVar(var)
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def setVar(self,var,value):
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self.expand_cache = {}
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match = __setvar_regexp__.match(var)
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if match and match.group("keyword") in __setvar_keyword__:
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base = match.group('base')
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keyword = match.group("keyword")
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override = match.group('add')
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l = self.getVarFlag(base, keyword) or []
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l.append([value, override])
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self.setVarFlag(base, keyword, l)
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# todo make sure keyword is not __doc__ or __module__
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# pay the cookie monster
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try:
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self._special_values[keyword].add( base )
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except:
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self._special_values[keyword] = set()
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self._special_values[keyword].add( base )
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return
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if not var in self.dict:
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self._makeShadowCopy(var)
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# more cookies for the cookie monster
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if '_' in var:
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override = var[var.rfind('_')+1:]
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if not self._seen_overrides.has_key(override):
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self._seen_overrides[override] = set()
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self._seen_overrides[override].add( var )
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# setting var
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self.dict[var]["content"] = value
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def getVar(self,var,exp):
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value = self.getVarFlag(var,"content")
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if exp and value:
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return self.expand(value,var)
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return value
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def renameVar(self, key, newkey):
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"""
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Rename the variable key to newkey
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"""
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val = self.getVar(key, 0)
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if val is not None:
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self.setVar(newkey, val)
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for i in ('_append', '_prepend'):
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src = self.getVarFlag(key, i)
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if src is None:
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continue
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dest = self.getVarFlag(newkey, i) or []
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dest.extend(src)
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self.setVarFlag(newkey, i, dest)
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if self._special_values.has_key(i) and key in self._special_values[i]:
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self._special_values[i].remove(key)
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self._special_values[i].add(newkey)
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self.delVar(key)
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def delVar(self,var):
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self.expand_cache = {}
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self.dict[var] = {}
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def setVarFlag(self,var,flag,flagvalue):
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if not var in self.dict:
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self._makeShadowCopy(var)
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self.dict[var][flag] = flagvalue
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def getVarFlag(self,var,flag):
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local_var = self._findVar(var)
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if local_var:
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if flag in local_var:
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return copy.copy(local_var[flag])
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return None
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def delVarFlag(self,var,flag):
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local_var = self._findVar(var)
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if not local_var:
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return
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if not var in self.dict:
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self._makeShadowCopy(var)
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if var in self.dict and flag in self.dict[var]:
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del self.dict[var][flag]
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def setVarFlags(self,var,flags):
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if not var in self.dict:
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self._makeShadowCopy(var)
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for i in flags:
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if i == "content":
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continue
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self.dict[var][i] = flags[i]
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def getVarFlags(self,var):
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local_var = self._findVar(var)
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flags = {}
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if local_var:
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for i in local_var:
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if i == "content":
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continue
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flags[i] = local_var[i]
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if len(flags) == 0:
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return None
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return flags
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def delVarFlags(self,var):
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if not var in self.dict:
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self._makeShadowCopy(var)
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if var in self.dict:
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content = None
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# try to save the content
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if "content" in self.dict[var]:
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content = self.dict[var]["content"]
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self.dict[var] = {}
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self.dict[var]["content"] = content
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else:
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del self.dict[var]
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def createCopy(self):
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"""
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Create a copy of self by setting _data to self
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"""
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# we really want this to be a DataSmart...
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data = DataSmart(seen=self._seen_overrides.copy(), special=self._special_values.copy())
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data.dict["_data"] = self.dict
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return data
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# Dictionary Methods
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def keys(self):
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def _keys(d, mykey):
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if "_data" in d:
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_keys(d["_data"],mykey)
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for key in d.keys():
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if key != "_data":
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mykey[key] = None
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keytab = {}
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_keys(self.dict,keytab)
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return keytab.keys()
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def __getitem__(self,item):
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#print "Warning deprecated"
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return self.getVar(item, False)
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def __setitem__(self,var,data):
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#print "Warning deprecated"
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self.setVar(var,data)
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