"""
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
#
# SPDX-License-Identifier: GPL-2.0-only
#
# Based on functions from the base bb module, Copyright 2003 Holger Schurig
import copy, re, sys, traceback
from collections.abc import MutableMapping
import logging
import hashlib
import bb, bb.codeparser
from bb import utils
from bb.COW import COWDictBase
logger = logging.getLogger("BitBake.Data")
__setvar_keyword__ = [":append", ":prepend", ":remove"]
__setvar_regexp__ = re.compile(r'(?P.*?)(?P:append|:prepend|:remove)(:(?P[^A-Z]*))?$')
__expand_var_regexp__ = re.compile(r"\${[a-zA-Z0-9\-_+./~:]+?}")
__expand_python_regexp__ = re.compile(r"\${@.+?}")
__whitespace_split__ = re.compile(r'(\s)')
__override_regexp__ = re.compile(r'[a-z0-9]+')
def infer_caller_details(loginfo, parent = False, varval = True):
"""Save the caller the trouble of specifying everything."""
# Save effort.
if 'ignore' in loginfo and loginfo['ignore']:
return
# If nothing was provided, mark this as possibly unneeded.
if not loginfo:
loginfo['ignore'] = True
return
# Infer caller's likely values for variable (var) and value (value),
# to reduce clutter in the rest of the code.
above = None
def set_above():
try:
raise Exception
except Exception:
tb = sys.exc_info()[2]
if parent:
return tb.tb_frame.f_back.f_back.f_back
else:
return tb.tb_frame.f_back.f_back
if varval and ('variable' not in loginfo or 'detail' not in loginfo):
if not above:
above = set_above()
lcls = above.f_locals.items()
for k, v in lcls:
if k == 'value' and 'detail' not in loginfo:
loginfo['detail'] = v
if k == 'var' and 'variable' not in loginfo:
loginfo['variable'] = v
# Infer file/line/function from traceback
# Don't use traceback.extract_stack() since it fills the line contents which
# we don't need and that hits stat syscalls
if 'file' not in loginfo:
if not above:
above = set_above()
f = above.f_back
line = f.f_lineno
file = f.f_code.co_filename
func = f.f_code.co_name
loginfo['file'] = file
loginfo['line'] = line
if func not in loginfo:
loginfo['func'] = func
class VariableParse:
def __init__(self, varname, d, val = None):
self.varname = varname
self.d = d
self.value = val
self.references = set()
self.execs = set()
self.contains = {}
def var_sub(self, match):
key = match.group()[2:-1]
if self.varname and key:
if self.varname == key:
raise Exception("variable %s references itself!" % self.varname)
var = self.d.getVarFlag(key, "_content")
self.references.add(key)
if var is not None:
return var
else:
return match.group()
def python_sub(self, match):
if isinstance(match, str):
code = match
else:
code = match.group()[3:-1]
if self.varname:
varname = 'Var <%s>' % self.varname
else:
varname = ''
codeobj = compile(code.strip(), varname, "eval")
parser = bb.codeparser.PythonParser(self.varname, logger)
parser.parse_python(code)
if self.varname:
vardeps = self.d.getVarFlag(self.varname, "vardeps")
if vardeps is None:
parser.log.flush()
else:
parser.log.flush()
self.references |= parser.references
self.execs |= parser.execs
for k in parser.contains:
if k not in self.contains:
self.contains[k] = parser.contains[k].copy()
else:
self.contains[k].update(parser.contains[k])
value = utils.better_eval(codeobj, DataContext(self.d), {'d' : self.d})
return str(value)
class DataContext(dict):
def __init__(self, metadata, **kwargs):
self.metadata = metadata
dict.__init__(self, **kwargs)
self['d'] = metadata
def __missing__(self, key):
value = self.metadata.getVar(key)
if value is None or self.metadata.getVarFlag(key, 'func', False):
raise KeyError(key)
else:
return value
class ExpansionError(Exception):
def __init__(self, varname, expression, exception):
self.expression = expression
self.variablename = varname
self.exception = exception
self.varlist = [varname or expression or ""]
if varname:
if expression:
self.msg = "Failure expanding variable %s, expression was %s which triggered exception %s: %s" % (varname, expression, type(exception).__name__, exception)
else:
self.msg = "Failure expanding variable %s: %s: %s" % (varname, type(exception).__name__, exception)
else:
self.msg = "Failure expanding expression %s which triggered exception %s: %s" % (expression, type(exception).__name__, exception)
Exception.__init__(self, self.msg)
self.args = (varname, expression, exception)
def addVar(self, varname):
if varname:
self.varlist.append(varname)
def __str__(self):
chain = "\nThe variable dependency chain for the failure is: " + " -> ".join(self.varlist)
return self.msg + chain
class IncludeHistory(object):
def __init__(self, parent = None, filename = '[TOP LEVEL]'):
self.parent = parent
self.filename = filename
self.children = []
self.current = self
def copy(self):
new = IncludeHistory(self.parent, self.filename)
for c in self.children:
new.children.append(c)
return new
def include(self, filename):
newfile = IncludeHistory(self.current, filename)
self.current.children.append(newfile)
self.current = newfile
return self
def __enter__(self):
pass
def __exit__(self, a, b, c):
if self.current.parent:
self.current = self.current.parent
else:
bb.warn("Include log: Tried to finish '%s' at top level." % self.filename)
return False
def emit(self, o, level = 0):
"""Emit an include history file, and its children."""
if level:
spaces = " " * (level - 1)
o.write("# %s%s" % (spaces, self.filename))
if len(self.children) > 0:
o.write(" includes:")
else:
o.write("#\n# INCLUDE HISTORY:\n#")
level = level + 1
for child in self.children:
o.write("\n")
child.emit(o, level)
class VariableHistory(object):
def __init__(self, dataroot):
self.dataroot = dataroot
self.variables = COWDictBase.copy()
def copy(self):
new = VariableHistory(self.dataroot)
new.variables = self.variables.copy()
return new
def __getstate__(self):
vardict = {}
for k, v in self.variables.iteritems():
vardict[k] = v
return {'dataroot': self.dataroot,
'variables': vardict}
def __setstate__(self, state):
self.dataroot = state['dataroot']
self.variables = COWDictBase.copy()
for k, v in state['variables'].items():
self.variables[k] = v
def record(self, *kwonly, **loginfo):
if not self.dataroot._tracking:
return
if len(kwonly) > 0:
raise TypeError
infer_caller_details(loginfo, parent = True)
if 'ignore' in loginfo and loginfo['ignore']:
return
if 'op' not in loginfo or not loginfo['op']:
loginfo['op'] = 'set'
if 'detail' in loginfo:
loginfo['detail'] = str(loginfo['detail'])
if 'variable' not in loginfo or 'file' not in loginfo:
raise ValueError("record() missing variable or file.")
var = loginfo['variable']
if var not in self.variables:
self.variables[var] = []
if not isinstance(self.variables[var], list):
return
if 'nodups' in loginfo and loginfo in self.variables[var]:
return
self.variables[var].append(loginfo.copy())
def rename_variable_hist(self, oldvar, newvar):
if not self.dataroot._tracking:
return
if oldvar not in self.variables:
return
if newvar not in self.variables:
self.variables[newvar] = []
for i in self.variables[oldvar]:
self.variables[newvar].append(i.copy())
def variable(self, var):
varhistory = []
if var in self.variables:
varhistory.extend(self.variables[var])
return varhistory
def emit(self, var, oval, val, o, d):
history = self.variable(var)
# Append override history
if var in d.overridedata:
for (r, override) in d.overridedata[var]:
for event in self.variable(r):
loginfo = event.copy()
if 'flag' in loginfo and not loginfo['flag'].startswith(("_", ":")):
continue
loginfo['variable'] = var
loginfo['op'] = 'override[%s]:%s' % (override, loginfo['op'])
history.append(loginfo)
commentVal = re.sub('\n', '\n#', str(oval))
if history:
if len(history) == 1:
o.write("#\n# $%s\n" % var)
else:
o.write("#\n# $%s [%d operations]\n" % (var, len(history)))
for event in history:
# o.write("# %s\n" % str(event))
if 'func' in event:
# If we have a function listed, this is internal
# code, not an operation in a config file, and the
# full path is distracting.
event['file'] = re.sub('.*/', '', event['file'])
display_func = ' [%s]' % event['func']
else:
display_func = ''
if 'flag' in event:
flag = '[%s] ' % (event['flag'])
else:
flag = ''
o.write("# %s %s:%s%s\n# %s\"%s\"\n" % (event['op'], event['file'], event['line'], display_func, flag, re.sub('\n', '\n# ', event['detail'])))
if len(history) > 1:
o.write("# pre-expansion value:\n")
o.write('# "%s"\n' % (commentVal))
else:
o.write("#\n# $%s\n# [no history recorded]\n#\n" % var)
o.write('# "%s"\n' % (commentVal))
def get_variable_files(self, var):
"""Get the files where operations are made on a variable"""
var_history = self.variable(var)
files = []
for event in var_history:
files.append(event['file'])
return files
def get_variable_lines(self, var, f):
"""Get the line where a operation is made on a variable in file f"""
var_history = self.variable(var)
lines = []
for event in var_history:
if f== event['file']:
line = event['line']
lines.append(line)
return lines
def get_variable_items_files(self, var):
"""
Use variable history to map items added to a list variable and
the files in which they were added.
"""
d = self.dataroot
history = self.variable(var)
finalitems = (d.getVar(var) or '').split()
filemap = {}
isset = False
for event in history:
if 'flag' in event:
continue
if event['op'] == ':remove':
continue
if isset and event['op'] == 'set?':
continue
isset = True
items = d.expand(event['detail']).split()
for item in items:
# This is a little crude but is belt-and-braces to avoid us
# having to handle every possible operation type specifically
if item in finalitems and not item in filemap:
filemap[item] = event['file']
return filemap
def del_var_history(self, var, f=None, line=None):
"""If file f and line are not given, the entire history of var is deleted"""
if var in self.variables:
if f and line:
self.variables[var] = [ x for x in self.variables[var] if x['file']!=f and x['line']!=line]
else:
self.variables[var] = []
class DataSmart(MutableMapping):
def __init__(self):
self.dict = {}
self.inchistory = IncludeHistory()
self.varhistory = VariableHistory(self)
self._tracking = False
self.expand_cache = {}
# cookie monster tribute
# Need to be careful about writes to overridedata as
# its only a shallow copy, could influence other data store
# copies!
self.overridedata = {}
self.overrides = None
self.overridevars = set(["OVERRIDES", "FILE"])
self.inoverride = False
def enableTracking(self):
self._tracking = True
def disableTracking(self):
self._tracking = False
def expandWithRefs(self, s, varname):
if not isinstance(s, str): # sanity check
return VariableParse(varname, self, s)
varparse = VariableParse(varname, self)
while s.find('${') != -1:
olds = s
try:
s = __expand_var_regexp__.sub(varparse.var_sub, s)
try:
s = __expand_python_regexp__.sub(varparse.python_sub, s)
except SyntaxError as e:
# Likely unmatched brackets, just don't expand the expression
if e.msg != "EOL while scanning string literal" and not e.msg.startswith("unterminated string literal"):
raise
if s == olds:
break
except ExpansionError as e:
e.addVar(varname)
raise
except bb.parse.SkipRecipe:
raise
except bb.BBHandledException:
raise
except Exception as exc:
tb = sys.exc_info()[2]
raise ExpansionError(varname, s, exc).with_traceback(tb) from exc
varparse.value = s
return varparse
def expand(self, s, varname = None):
return self.expandWithRefs(s, varname).value
def finalize(self, parent = False):
return
def internal_finalize(self, parent = False):
"""Performs final steps upon the datastore, including application of overrides"""
self.overrides = None
def need_overrides(self):
if self.overrides is not None:
return
if self.inoverride:
return
for count in range(5):
self.inoverride = True
# Can end up here recursively so setup dummy values
self.overrides = []
self.overridesset = set()
self.overrides = (self.getVar("OVERRIDES") or "").split(":") or []
self.overridesset = set(self.overrides)
self.inoverride = False
self.expand_cache = {}
newoverrides = (self.getVar("OVERRIDES") or "").split(":") or []
if newoverrides == self.overrides:
break
self.overrides = newoverrides
self.overridesset = set(self.overrides)
else:
bb.fatal("Overrides could not be expanded into a stable state after 5 iterations, overrides must be being referenced by other overridden variables in some recursive fashion. Please provide your configuration to bitbake-devel so we can laugh, er, I mean try and understand how to make it work.")
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:
if var in dest:
return dest[var], self.overridedata.get(var, None)
if "_data" not in dest:
break
dest = dest["_data"]
return None, self.overridedata.get(var, 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, **loginfo):
#print("var=" + str(var) + " val=" + str(value))
if not var.startswith("__anon_") and ("_append" in var or "_prepend" in var or "_remove" in var):
info = "%s" % var
if "filename" in loginfo:
info += " file: %s" % loginfo[filename]
if "lineno" in loginfo:
info += " line: %s" % loginfo[lineno]
bb.fatal("Variable %s contains an operation using the old override syntax. Please convert this layer/metadata before attempting to use with a newer bitbake." % info)
self.expand_cache = {}
parsing=False
if 'parsing' in loginfo:
parsing=True
if 'op' not in loginfo:
loginfo['op'] = "set"
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, False) or []
l.append([value, override])
self.setVarFlag(base, keyword, l, ignore=True)
# And cause that to be recorded:
loginfo['detail'] = value
loginfo['variable'] = base
if override:
loginfo['op'] = '%s[%s]' % (keyword, override)
else:
loginfo['op'] = keyword
self.varhistory.record(**loginfo)
# todo make sure keyword is not __doc__ or __module__
# pay the cookie monster
# more cookies for the cookie monster
if ':' in var:
self._setvar_update_overrides(base, **loginfo)
if base in self.overridevars:
self._setvar_update_overridevars(var, value)
return
if not var in self.dict:
self._makeShadowCopy(var)
if not parsing:
if ":append" in self.dict[var]:
del self.dict[var][":append"]
if ":prepend" in self.dict[var]:
del self.dict[var][":prepend"]
if ":remove" in self.dict[var]:
del self.dict[var][":remove"]
if var in self.overridedata:
active = []
self.need_overrides()
for (r, o) in self.overridedata[var]:
if o in self.overridesset:
active.append(r)
elif ":" in o:
if set(o.split(":")).issubset(self.overridesset):
active.append(r)
for a in active:
self.delVar(a)
del self.overridedata[var]
# more cookies for the cookie monster
if ':' in var:
self._setvar_update_overrides(var, **loginfo)
# setting var
self.dict[var]["_content"] = value
self.varhistory.record(**loginfo)
if var in self.overridevars:
self._setvar_update_overridevars(var, value)
def _setvar_update_overridevars(self, var, value):
vardata = self.expandWithRefs(value, var)
new = vardata.references
new.update(vardata.contains.keys())
while not new.issubset(self.overridevars):
nextnew = set()
self.overridevars.update(new)
for i in new:
vardata = self.expandWithRefs(self.getVar(i), i)
nextnew.update(vardata.references)
nextnew.update(vardata.contains.keys())
new = nextnew
self.internal_finalize(True)
def _setvar_update_overrides(self, var, **loginfo):
# aka pay the cookie monster
override = var[var.rfind(':')+1:]
shortvar = var[:var.rfind(':')]
while override and __override_regexp__.match(override):
if shortvar not in self.overridedata:
self.overridedata[shortvar] = []
if [var, override] not in self.overridedata[shortvar]:
# Force CoW by recreating the list first
self.overridedata[shortvar] = list(self.overridedata[shortvar])
self.overridedata[shortvar].append([var, override])
override = None
if ":" in shortvar:
override = var[shortvar.rfind(':')+1:]
shortvar = var[:shortvar.rfind(':')]
if len(shortvar) == 0:
override = None
def getVar(self, var, expand=True, noweakdefault=False, parsing=False):
return self.getVarFlag(var, "_content", expand, noweakdefault, parsing)
def renameVar(self, key, newkey, **loginfo):
"""
Rename the variable key to newkey
"""
if key == newkey:
bb.warn("Calling renameVar with equivalent keys (%s) is invalid" % key)
return
val = self.getVar(key, 0, parsing=True)
if val is not None:
self.varhistory.rename_variable_hist(key, newkey)
loginfo['variable'] = newkey
loginfo['op'] = 'rename from %s' % key
loginfo['detail'] = val
self.varhistory.record(**loginfo)
self.setVar(newkey, val, ignore=True, parsing=True)
for i in (__setvar_keyword__):
src = self.getVarFlag(key, i, False)
if src is None:
continue
dest = self.getVarFlag(newkey, i, False) or []
dest.extend(src)
self.setVarFlag(newkey, i, dest, ignore=True)
if key in self.overridedata:
self.overridedata[newkey] = []
for (v, o) in self.overridedata[key]:
self.overridedata[newkey].append([v.replace(key, newkey), o])
self.renameVar(v, v.replace(key, newkey))
if ':' in newkey and val is None:
self._setvar_update_overrides(newkey, **loginfo)
loginfo['variable'] = key
loginfo['op'] = 'rename (to)'
loginfo['detail'] = newkey
self.varhistory.record(**loginfo)
self.delVar(key, ignore=True)
def appendVar(self, var, value, **loginfo):
loginfo['op'] = 'append'
self.varhistory.record(**loginfo)
self.setVar(var + ":append", value, ignore=True, parsing=True)
def prependVar(self, var, value, **loginfo):
loginfo['op'] = 'prepend'
self.varhistory.record(**loginfo)
self.setVar(var + ":prepend", value, ignore=True, parsing=True)
def delVar(self, var, **loginfo):
self.expand_cache = {}
loginfo['detail'] = ""
loginfo['op'] = 'del'
self.varhistory.record(**loginfo)
self.dict[var] = {}
if var in self.overridedata:
del self.overridedata[var]
if ':' in var:
override = var[var.rfind(':')+1:]
shortvar = var[:var.rfind(':')]
while override and override.islower():
try:
if shortvar in self.overridedata:
# Force CoW by recreating the list first
self.overridedata[shortvar] = list(self.overridedata[shortvar])
self.overridedata[shortvar].remove([var, override])
except ValueError as e:
pass
override = None
if ":" in shortvar:
override = var[shortvar.rfind(':')+1:]
shortvar = var[:shortvar.rfind(':')]
if len(shortvar) == 0:
override = None
def setVarFlag(self, var, flag, value, **loginfo):
self.expand_cache = {}
if 'op' not in loginfo:
loginfo['op'] = "set"
loginfo['flag'] = flag
self.varhistory.record(**loginfo)
if not var in self.dict:
self._makeShadowCopy(var)
self.dict[var][flag] = value
if flag == "_defaultval" and ':' in var:
self._setvar_update_overrides(var, **loginfo)
if flag == "_defaultval" and var in self.overridevars:
self._setvar_update_overridevars(var, value)
if flag == "unexport" or flag == "export":
if not "__exportlist" in self.dict:
self._makeShadowCopy("__exportlist")
if not "_content" in self.dict["__exportlist"]:
self.dict["__exportlist"]["_content"] = set()
self.dict["__exportlist"]["_content"].add(var)
def getVarFlag(self, var, flag, expand=True, noweakdefault=False, parsing=False, retparser=False):
if flag == "_content":
cachename = var
else:
if not flag:
bb.warn("Calling getVarFlag with flag unset is invalid")
return None
cachename = var + "[" + flag + "]"
if expand and cachename in self.expand_cache:
return self.expand_cache[cachename].value
local_var, overridedata = self._findVar(var)
value = None
removes = set()
if flag == "_content" and overridedata is not None and not parsing:
match = False
active = {}
self.need_overrides()
for (r, o) in overridedata:
# FIXME What about double overrides both with "_" in the name?
if o in self.overridesset:
active[o] = r
elif ":" in o:
if set(o.split(":")).issubset(self.overridesset):
active[o] = r
mod = True
while mod:
mod = False
for o in self.overrides:
for a in active.copy():
if a.endswith(":" + o):
t = active[a]
del active[a]
active[a.replace(":" + o, "")] = t
mod = True
elif a == o:
match = active[a]
del active[a]
if match:
value, subparser = self.getVarFlag(match, "_content", False, retparser=True)
if hasattr(subparser, "removes"):
# We have to carry the removes from the overridden variable to apply at the
# end of processing
removes = subparser.removes
if local_var is not None and value is None:
if flag in local_var:
value = copy.copy(local_var[flag])
elif flag == "_content" and "_defaultval" in local_var and not noweakdefault:
value = copy.copy(local_var["_defaultval"])
if flag == "_content" and local_var is not None and ":append" in local_var and not parsing:
self.need_overrides()
for (r, o) in local_var[":append"]:
match = True
if o:
for o2 in o.split(":"):
if not o2 in self.overrides:
match = False
if match:
if value is None:
value = ""
value = value + r
if flag == "_content" and local_var is not None and ":prepend" in local_var and not parsing:
self.need_overrides()
for (r, o) in local_var[":prepend"]:
match = True
if o:
for o2 in o.split(":"):
if not o2 in self.overrides:
match = False
if match:
if value is None:
value = ""
value = r + value
parser = None
if expand or retparser:
parser = self.expandWithRefs(value, cachename)
if expand:
value = parser.value
if value and flag == "_content" and local_var is not None and ":remove" in local_var and not parsing:
self.need_overrides()
for (r, o) in local_var[":remove"]:
match = True
if o:
for o2 in o.split(":"):
if not o2 in self.overrides:
match = False
if match:
removes.add(r)
if value and flag == "_content" and not parsing:
if removes and parser:
expanded_removes = {}
for r in removes:
expanded_removes[r] = self.expand(r).split()
parser.removes = set()
val = ""
for v in __whitespace_split__.split(parser.value):
skip = False
for r in removes:
if v in expanded_removes[r]:
parser.removes.add(r)
skip = True
if skip:
continue
val = val + v
parser.value = val
if expand:
value = parser.value
if parser:
self.expand_cache[cachename] = parser
if retparser:
return value, parser
return value
def delVarFlag(self, var, flag, **loginfo):
self.expand_cache = {}
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]:
loginfo['detail'] = ""
loginfo['op'] = 'delFlag'
loginfo['flag'] = flag
self.varhistory.record(**loginfo)
del self.dict[var][flag]
def appendVarFlag(self, var, flag, value, **loginfo):
loginfo['op'] = 'append'
loginfo['flag'] = flag
self.varhistory.record(**loginfo)
newvalue = (self.getVarFlag(var, flag, False) or "") + value
self.setVarFlag(var, flag, newvalue, ignore=True)
def prependVarFlag(self, var, flag, value, **loginfo):
loginfo['op'] = 'prepend'
loginfo['flag'] = flag
self.varhistory.record(**loginfo)
newvalue = value + (self.getVarFlag(var, flag, False) or "")
self.setVarFlag(var, flag, newvalue, ignore=True)
def setVarFlags(self, var, flags, **loginfo):
self.expand_cache = {}
infer_caller_details(loginfo)
if not var in self.dict:
self._makeShadowCopy(var)
for i in flags:
if i == "_content":
continue
loginfo['flag'] = i
loginfo['detail'] = flags[i]
self.varhistory.record(**loginfo)
self.dict[var][i] = flags[i]
def getVarFlags(self, var, expand = False, internalflags=False):
local_var, _ = self._findVar(var)
flags = {}
if local_var:
for i in local_var:
if i.startswith(("_", ":")) and not internalflags:
continue
flags[i] = local_var[i]
if expand and i in expand:
flags[i] = self.expand(flags[i], var + "[" + i + "]")
if len(flags) == 0:
return None
return flags
def delVarFlags(self, var, **loginfo):
self.expand_cache = {}
if not var in self.dict:
self._makeShadowCopy(var)
if var in self.dict:
content = None
loginfo['op'] = 'delete flags'
self.varhistory.record(**loginfo)
# 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()
data.dict["_data"] = self.dict
data.varhistory = self.varhistory.copy()
data.varhistory.dataroot = data
data.inchistory = self.inchistory.copy()
data._tracking = self._tracking
data.overrides = None
data.overridevars = copy.copy(self.overridevars)
# Should really be a deepcopy but has heavy overhead.
# Instead, we're careful with writes.
data.overridedata = copy.copy(self.overridedata)
return data
def expandVarref(self, variable, parents=False):
"""Find all references to variable in the data and expand it
in place, optionally descending to parent datastores."""
if parents:
keys = iter(self)
else:
keys = self.localkeys()
ref = '${%s}' % variable
value = self.getVar(variable, False)
for key in keys:
referrervalue = self.getVar(key, False)
if referrervalue and ref in referrervalue:
self.setVar(key, referrervalue.replace(ref, value))
def localkeys(self):
for key in self.dict:
if key not in ['_data']:
yield key
def __iter__(self):
deleted = set()
overrides = set()
def keylist(d):
klist = set()
for key in d:
if key in ["_data"]:
continue
if key in deleted:
continue
if key in overrides:
continue
if not d[key]:
deleted.add(key)
continue
klist.add(key)
if "_data" in d:
klist |= keylist(d["_data"])
return klist
self.need_overrides()
for var in self.overridedata:
for (r, o) in self.overridedata[var]:
if o in self.overridesset:
overrides.add(var)
elif ":" in o:
if set(o.split(":")).issubset(self.overridesset):
overrides.add(var)
for k in keylist(self.dict):
yield k
for k in overrides:
yield k
def __len__(self):
return len(frozenset(iter(self)))
def __getitem__(self, item):
value = self.getVar(item, False)
if value is None:
raise KeyError(item)
else:
return value
def __setitem__(self, var, value):
self.setVar(var, value)
def __delitem__(self, var):
self.delVar(var)
def get_hash(self):
data = {}
d = self.createCopy()
bb.data.expandKeys(d)
config_whitelist = set((d.getVar("BB_HASHCONFIG_WHITELIST") or "").split())
keys = set(key for key in iter(d) if not key.startswith("__"))
for key in keys:
if key in config_whitelist:
continue
value = d.getVar(key, False) or ""
if type(value) is type(self):
data.update({key:value.get_hash()})
else:
data.update({key:value})
varflags = d.getVarFlags(key, internalflags = True, expand=["vardepvalue"])
if not varflags:
continue
for f in varflags:
if f == "_content":
continue
data.update({'%s[%s]' % (key, f):varflags[f]})
for key in ["__BBTASKS", "__BBANONFUNCS", "__BBHANDLERS"]:
bb_list = d.getVar(key, False) or []
data.update({key:str(bb_list)})
if key == "__BBANONFUNCS":
for i in bb_list:
value = d.getVar(i, False) or ""
data.update({i:value})
data_str = str([(k, data[k]) for k in sorted(data.keys())])
return hashlib.sha256(data_str.encode("utf-8")).hexdigest()