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#!/usr/bin/env python
"""
Param source code generation script.
"""
from __future__ import print_function
import xml.etree.ElementTree as ET
import codecs
import argparse
from jinja2 import Environment, FileSystemLoader
import os
def generate(xml_file, dest='.', modules=None):
"""
Generate px4 param source from xml.
@param xml_file: input parameter xml file
@param dest: Destination directory for generated files
@param modules: The list of px4 modules to search for params.
None means to scan everything.
"""
# pylint: disable=broad-except
tree = ET.parse(xml_file)
root = tree.getroot()
params = []
for group in root:
if group.tag == "group" and "no_code_generation" not in group.attrib:
for param in group:
scope_ = param.find('scope').text
if (modules is not None) and (not scope_ in modules):
continue
params.append(param)
params = sorted(params, key=lambda name: name.attrib["name"])
script_path = os.path.dirname(os.path.realpath(__file__))
# for jinja docs see: http://jinja.pocoo.org/docs/2.9/api/
env = Environment(
loader=FileSystemLoader(os.path.join(script_path, 'templates')))
if not os.path.isdir(dest):
os.path.mkdir(dest)
template_files = [
'px4_parameters.h.jinja',
'px4_parameters.c.jinja',
]
for template_file in template_files:
template = env.get_template(template_file)
with open(os.path.join(
dest, template_file.replace('.jinja','')), 'w') as fid:
fid.write(template.render(params=params))
if __name__ == "__main__":
arg_parser = argparse.ArgumentParser()
arg_parser.add_argument("--xml", help="parameter xml file")
arg_parser.add_argument("--modules", help="px4 module list", default=None)
arg_parser.add_argument("--dest", help="destination path", default=os.path.curdir)
args = arg_parser.parse_args()
generate(xml_file=args.xml, modules=args.modules, dest=args.dest)
# vim: set et fenc=utf-8 ff=unix sts=4 sw=4 ts=4 :