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# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
"""
BitBake Smart Dictionary Implementation
Functions for interacting with the data structure used by the
BitBake build tools.
Copyright (C) 2003, 2004 Chris Larson
Copyright (C) 2004, 2005 Seb Frankengul
Copyright (C) 2005, 2006 Holger Hans Peter Freyther
Copyright (C) 2005 Uli Luckas
Copyright (C) 2005 ROAD GmbH
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA.
Based on functions from the base bb module, Copyright 2003 Holger Schurig
"""
import copy, os, re, sys, time, types
import bb
from bb import utils, methodpool
from COW import COWDictBase
from sets import Set
from new import classobj
__setvar_keyword__ = ["_append","_prepend"]
__setvar_regexp__ = re.compile('(?P<base>.*?)(?P<keyword>_append|_prepend)(_(?P<add>.*))?')
__expand_var_regexp__ = re.compile(r"\${[^{}]+}")
__expand_python_regexp__ = re.compile(r"\${@.+?}")
class DataSmart:
def __init__(self, special = COWDictBase.copy(), seen = COWDictBase.copy() ):
self.dict = {}
# cookie monster tribute
self._special_values = special
self._seen_overrides = seen
self.expand_cache = {}
def expand(self,s, varname):
def var_sub(match):
key = match.group()[2:-1]
if varname and key:
if varname == key:
raise Exception("variable %s references itself!" % varname)
var = self.getVar(key, 1)
if var is not None:
return var
else:
return match.group()
def python_sub(match):
import bb
code = match.group()[3:-1]
locals()['d'] = self
s = eval(code)
if type(s) == types.IntType: s = str(s)
return s
if type(s) is not types.StringType: # sanity check
return s
if varname and varname in self.expand_cache:
return self.expand_cache[varname]
while s.find('$') != -1:
olds = s
try:
s = __expand_var_regexp__.sub(var_sub, s)
s = __expand_python_regexp__.sub(python_sub, s)
if s == olds: break
if type(s) is not types.StringType: # sanity check
bb.msg.error(bb.msg.domain.Data, 'expansion of %s returned non-string %s' % (olds, s))
except KeyboardInterrupt:
raise
except:
bb.msg.note(1, bb.msg.domain.Data, "%s:%s while evaluating:\n%s" % (sys.exc_info()[0], sys.exc_info()[1], s))
raise
if varname:
self.expand_cache[varname] = s
return s
def initVar(self, var):
self.expand_cache = {}
if not var in self.dict:
self.dict[var] = {}
def _findVar(self,var):
_dest = self.dict
while (_dest and var not in _dest):
if not "_data" in _dest:
_dest = None
break
_dest = _dest["_data"]
if _dest and var in _dest:
return _dest[var]
return None
def _makeShadowCopy(self, var):
if var in self.dict:
return
local_var = self._findVar(var)
if local_var:
self.dict[var] = copy.copy(local_var)
else:
self.initVar(var)
def setVar(self,var,value):
self.expand_cache = {}
match = __setvar_regexp__.match(var)
if match and match.group("keyword") in __setvar_keyword__:
base = match.group('base')
keyword = match.group("keyword")
override = match.group('add')
l = self.getVarFlag(base, keyword) or []
l.append([value, override])
self.setVarFlag(base, keyword, l)
# todo make sure keyword is not __doc__ or __module__
# pay the cookie monster
try:
self._special_values[keyword].add( base )
except:
self._special_values[keyword] = Set()
self._special_values[keyword].add( base )
return
if not var in self.dict:
self._makeShadowCopy(var)
if self.getVarFlag(var, 'matchesenv'):
self.delVarFlag(var, 'matchesenv')
self.setVarFlag(var, 'export', 1)
# more cookies for the cookie monster
if '_' in var:
override = var[var.rfind('_')+1:]
if not self._seen_overrides.has_key(override):
self._seen_overrides[override] = Set()
self._seen_overrides[override].add( var )
# setting var
self.dict[var]["content"] = value
def getVar(self,var,exp):
value = self.getVarFlag(var,"content")
if exp and value:
return self.expand(value,var)
return value
def delVar(self,var):
self.expand_cache = {}
self.dict[var] = {}
def setVarFlag(self,var,flag,flagvalue):
if not var in self.dict:
self._makeShadowCopy(var)
self.dict[var][flag] = flagvalue
def getVarFlag(self,var,flag):
local_var = self._findVar(var)
if local_var:
if flag in local_var:
return copy.copy(local_var[flag])
return None
def delVarFlag(self,var,flag):
local_var = self._findVar(var)
if not local_var:
return
if not var in self.dict:
self._makeShadowCopy(var)
if var in self.dict and flag in self.dict[var]:
del self.dict[var][flag]
def setVarFlags(self,var,flags):
if not var in self.dict:
self._makeShadowCopy(var)
for i in flags.keys():
if i == "content":
continue
self.dict[var][i] = flags[i]
def getVarFlags(self,var):
local_var = self._findVar(var)
flags = {}
if local_var:
for i in self.dict[var].keys():
if i == "content":
continue
flags[i] = self.dict[var][i]
if len(flags) == 0:
return None
return flags
def delVarFlags(self,var):
if not var in self.dict:
self._makeShadowCopy(var)
if var in self.dict:
content = None
# try to save the content
if "content" in self.dict[var]:
content = self.dict[var]["content"]
self.dict[var] = {}
self.dict[var]["content"] = content
else:
del self.dict[var]
def createCopy(self):
"""
Create a copy of self by setting _data to self
"""
# we really want this to be a DataSmart...
data = DataSmart(seen=self._seen_overrides.copy(), special=self._special_values.copy())
data.dict["_data"] = self.dict
return data
# Dictionary Methods
def keys(self):
def _keys(d, mykey):
if "_data" in d:
_keys(d["_data"],mykey)
for key in d.keys():
if key != "_data":
mykey[key] = None
keytab = {}
_keys(self.dict,keytab)
return keytab.keys()
def __getitem__(self,item):
#print "Warning deprecated"
return self.getVar(item, False)
def __setitem__(self,var,data):
#print "Warning deprecated"
self.setVar(var,data)
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