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- path normalization ('normalize' flag, defaults to enabled)
- existence verification for paths we know should exist ('mustexist' flag)
- supports clean handling of relative paths ('relativeto' flag)
Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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Update older code to use modern exception handling syntax which
is the form accepted by python 3.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Currently, if a variable is unset or has an empty value, the regex type
will return a match object which always matches. Not all variable types
will necessarily have the same behavior for handling defaults. I believe
that returning a match object which matches nothing when a variable is
unset is superior to returning one which matches anything, and the user
can always explicitly request anything via '.*', if that's what they
want.
This constructs a null pattern object which will never match, and uses
it when encountering an unset or empty variable (currently, these two
things are one and the same, as maketype is handling the default. we may
well want to shift that logic into the individual types, giving them
more control over default behavior, but currently the behavior is at
least relatively consistent -- no difference between unset and empty
variables).
Signed-off-by: Christopher Larson <chris_larson@mentor.com>
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This implementation consists of two components:
- Type creation python modules, whose job it is to construct objects of the
defined type for a given variable in the metadata
- typecheck.bbclass, which iterates over all configuration variables with a
type defined and uses oe.types to check the validity of the values
This gives us a few benefits:
- Automatic sanity checking of all configuration variables with a defined type
- Avoid duplicating the "how do I make use of the value of this variable"
logic between its users. For variables like PATH, this is simply a split(),
for boolean variables, the duplication can result in confusing, or even
mismatched semantics (is this 0/1, empty/nonempty, what?)
- Make it easier to create a configuration UI, as the type information could
be used to provide a better interface than a text edit box (e.g checkbox for
'boolean', dropdown for 'choice')
This functionality is entirely opt-in right now. To enable the configuration
variable type checking, simply INHERIT += "typecheck". Example of a failing
type check:
BAZ = "foo"
BAZ[type] = "boolean"
$ bitbake -p
FATAL: BAZ: Invalid boolean value 'foo'
$
Examples of leveraging oe.types in a python snippet:
PACKAGES[type] = "list"
python () {
import oe.data
for pkg in oe.data.typed_value("PACKAGES", d):
bb.note("package: %s" % pkg)
}
LIBTOOL_HAS_SYSROOT = "yes"
LIBTOOL_HAS_SYSROOT[type] = "boolean"
python () {
import oe.data
assert(oe.data.typed_value("LIBTOOL_HAS_SYSROOT", d) == True)
}
Signed-off-by: Chris Larson <chris_larson@mentor.com>
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Christopher Larson
Richard Purdie