def __expand_subfeatures_aux (property, dont_validate = False):
""" Helper for expand_subfeatures.
Given a feature and value, or just a value corresponding to an
implicit feature, returns a property set consisting of all component
subfeatures and their values. For example:
expand_subfeatures <toolset>gcc-2.95.2-linux-x86
-> <toolset>gcc <toolset-version>2.95.2 <toolset-os>linux <toolset-cpu>x86
equivalent to:
expand_subfeatures gcc-2.95.2-linux-x86
feature: The name of the feature, or empty if value corresponds to an implicit property
value: The value of the feature.
dont_validate: If True, no validation of value string will be done.
"""
f = property.feature()
v = property.value()
if not dont_validate:
validate_value_string(f, v)
components = v.split ("-")
v = components[0]
import property
result = [property.Property(f, components[0])]
subvalues = components[1:]
while len(subvalues) > 0:
subvalue = subvalues [0] # pop the head off of subvalues
subvalues = subvalues [1:]
subfeature = __find_implied_subfeature (f, subvalue, v)
# If no subfeature was found, reconstitute the value string and use that
if not subfeature:
return [property.Property(f, '-'.join(components))]
result.append(property.Property(subfeature, subvalue))
return result
def __expand_subfeatures_aux(property, dont_validate=False):
""" Helper for expand_subfeatures.
Given a feature and value, or just a value corresponding to an
implicit feature, returns a property set consisting of all component
subfeatures and their values. For example:
expand_subfeatures <toolset>gcc-2.95.2-linux-x86
-> <toolset>gcc <toolset-version>2.95.2 <toolset-os>linux <toolset-cpu>x86
equivalent to:
expand_subfeatures gcc-2.95.2-linux-x86
feature: The name of the feature, or empty if value corresponds to an implicit property
value: The value of the feature.
dont_validate: If True, no validation of value string will be done.
"""
f = property.feature()
v = property.value()
if not dont_validate:
validate_value_string(f, v)
components = v.split("-")
v = components[0]
import property
result = [property.Property(f, components[0])]
subvalues = components[1:]
while len(subvalues) > 0:
subvalue = subvalues[0] # pop the head off of subvalues
subvalues = subvalues[1:]
subfeature = __find_implied_subfeature(f, subvalue, v)
# If no subfeature was found, reconstitute the value string and use that
if not subfeature:
return [property.Property(f, '-'.join(components))]
result.append(property.Property(subfeature, subvalue))
return result