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"""Routines for converting Routine objects to and from XML."""
from lxml import etree
from fontFeatures.xmlLib.utils import put_languages, put_address
def toXML(self):
"""Serializes a Routine to a lxml Element object."""
root = etree.Element("routine")
if self.flags:
root.attrib["flags"] = str(self.flags)
put_address(self, root)
put_languages(self, root)
if self.name:
root.attrib["name"] = self.name
for r in self.rules:
root.append(r.toXML())
return root
@classmethod
def fromXML(klass, el):
"""Creates a Routine from a lxml Element object."""
from fontFeatures import Rule
rule = klass(
address=(el.get("address") or "").split("|"),
name=el.get("name"),
flags=(int(el.get("flags") or 0)),
)
for r in el:
rule.addRule(Rule.fromXML(r))
return rule
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