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import bb, bb.data
def read_file(filename):
try:
f = file( filename, "r" )
except IOError, reason:
return "" # WARNING: can't raise an error now because of the new RDEPENDS handling. This is a bit ugly. :M:
else:
return f.read().strip()
return None
def ifelse(condition, iftrue = True, iffalse = False):
if condition:
return iftrue
else:
return iffalse
def conditional(variable, checkvalue, truevalue, falsevalue, d):
if bb.data.getVar(variable,d,1) == checkvalue:
return truevalue
else:
return falsevalue
def less_or_equal(variable, checkvalue, truevalue, falsevalue, d):
if float(bb.data.getVar(variable,d,1)) <= float(checkvalue):
return truevalue
else:
return falsevalue
def version_less_or_equal(variable, checkvalue, truevalue, falsevalue, d):
result = bb.vercmp(bb.data.getVar(variable,d,True), checkvalue)
if result <= 0:
return truevalue
else:
return falsevalue
def contains(variable, checkvalues, truevalue, falsevalue, d):
val = d.getVar(variable, True)
if not val:
return falsevalue
val = set(val.split())
if isinstance(checkvalues, basestring):
checkvalues = set(checkvalues.split())
else:
checkvalues = set(checkvalues)
if checkvalues.issubset(val):
return truevalue
return falsevalue
def both_contain(variable1, variable2, checkvalue, d):
if bb.data.getVar(variable1,d,1).find(checkvalue) != -1 and bb.data.getVar(variable2,d,1).find(checkvalue) != -1:
return checkvalue
else:
return ""
def prune_suffix(var, suffixes, d):
# See if var ends with any of the suffixes listed and
# remove it if found
for suffix in suffixes:
if var.endswith(suffix):
return var.replace(suffix, "")
return var
def str_filter(f, str, d):
from re import match
return " ".join(filter(lambda x: match(f, x, 0), str.split()))
def str_filter_out(f, str, d):
from re import match
return " ".join(filter(lambda x: not match(f, x, 0), str.split()))
def param_bool(cfg, field, dflt = None):
"""Lookup <field> in <cfg> map and convert it to a boolean; take
<dflt> when this <field> does not exist"""
value = cfg.get(field, dflt)
strvalue = str(value).lower()
if strvalue in ('yes', 'y', 'true', 't', '1'):
return True
elif strvalue in ('no', 'n', 'false', 'f', '0'):
return False
raise ValueError("invalid value for boolean parameter '%s': '%s'" % (field, value))
def inherits(d, *classes):
"""Return True if the metadata inherits any of the specified classes"""
return any(bb.data.inherits_class(cls, d) for cls in classes)
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