ardupilot/Tools/autotest/logger_metadata/emit_xml.py

74 lines
3.5 KiB
Python

from __future__ import print_function
from lxml import etree
import emitter
class XMLEmitter(emitter.Emitter):
def preface(self):
return """<?xml version="1.0" encoding="utf-8"?>
<!-- Dynamically generated list of documented logfile messages (generated by parse.py) -->
"""
def postface(self):
return
def start(self):
self.logname = "LogMessages.xml"
self.fh = open("LogMessages.xml", mode='w')
print(self.preface(), file=self.fh)
self.loggermessagefile = etree.Element('loggermessagefile')
def emit(self, doccos, enumerations):
self.start()
for docco in doccos:
xml_logformat = etree.SubElement(self.loggermessagefile, 'logformat', name=docco.name)
if docco.url is not None:
xml_url = etree.SubElement(xml_logformat, 'url')
xml_url.text = docco.url
if docco.description is not None:
xml_description = etree.SubElement(xml_logformat, 'description')
xml_description.text = docco.description
xml_fields = etree.SubElement(xml_logformat, 'fields')
for f in docco.fields_order:
units = docco.fields[f]['units'] if "units" in docco.fields[f] else ""
fmt = docco.fields[f]['fmt'] if "fmt" in docco.fields[f] else ""
xml_field = etree.SubElement(xml_fields, 'field', name=f, units=units, type=fmt)
if "description" in docco.fields[f]:
xml_description2 = etree.SubElement(xml_field, 'description')
xml_description2.text = docco.fields[f]["description"]
# Check for enum/bitfield
fieldnamething = None
if "bitmaskenum" in docco.fields[f]:
fieldnamething = "bitmaskenum"
xmlenumtag = "bitmask"
xmlentrytag = "bit"
elif "valueenum" in docco.fields[f]:
fieldnamething = "valueenum"
xmlenumtag = "enum"
xmlentrytag = "element"
# If an enum/bitmask is defined, include this in the XML
if fieldnamething is not None:
enum_name = docco.fields[f][fieldnamething]
if enum_name not in enumerations:
raise Exception("Unknown enum (%s) (have %s)" %
(enum_name, "\n".join(sorted(enumerations.keys()))))
enum = enumerations[enum_name]
xml_enum = etree.SubElement(xml_field, xmlenumtag, name=enum_name)
for entry in enum.entries:
xml_enum_entry = etree.SubElement(xml_enum, xmlentrytag, name=entry.name)
xml_enum_entry_value = etree.SubElement(xml_enum_entry, 'value')
xml_enum_entry_value.text = str(entry.value)
if entry.comment is not None:
xml_enum_entry_comment = etree.SubElement(xml_enum_entry, 'description')
xml_enum_entry_comment.text = entry.comment
if xml_fields.text is None and not len(xml_fields):
xml_fields.text = '\n' # add </param> on next line in case of empty element.
self.stop()
def stop(self):
# etree.indent(self.loggermessagefile) # not available on thor, Ubuntu 16.04
pretty_xml = etree.tostring(self.loggermessagefile, pretty_print=True, encoding='unicode')
self.fh.write(pretty_xml)
self.fh.close()