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rules2yml.py
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import sys
import argparse
import re
from glob import *
import os
from ruamel.yaml import YAML
def command_line_arguments():
"""Define and handle command line interface"""
dir_path = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
parser = argparse.ArgumentParser(
description="Export the rules of *.proto files into the *.yml format so it can be used by the validator.",
prog="python3 rules2yml.py",
)
parser.add_argument(
"--dir",
"-d",
help="Name of the directory where the yml rules will be stored.",
default="rules",
required=False,
type=str,
)
parser.add_argument(
"--full-osi",
"-f",
help="Add is_set rule to all fields that do not contain it already.",
action="store_true",
required=False,
)
return parser.parse_args()
def gen_yml_rules(dir_name="rules", full_osi=False):
with open(r"open-simulation-interface/rules.yml") as file:
yaml = YAML(typ="safe")
rules_dict = yaml.load(file)
if not os.path.exists(dir_name):
os.makedirs(dir_name)
for file in glob("open-simulation-interface/*.proto*"):
filename = file.split("open-simulation-interface/")[1].split(".proto")[0]
if os.path.exists(f"{dir_name}/{filename}.yml"):
continue
with open(f"{dir_name}/{filename}.yml", "a") as yml_file:
with open(file, "rt") as fin:
isEnum = False
numMessage = 0
shiftCounter = False
saveStatement = ""
rules = []
for line in fin:
if file.find(".proto") != -1:
# Search for comment ("//").
matchComment = re.search("//", line)
if matchComment is not None:
statement = line[: matchComment.start()]
comment = line[matchComment.end() :]
else:
statement = line
comment = ""
# Add part of the statement from last line.
statement = saveStatement + " " + statement
saveStatement = ""
# New line is not necessary. Remove for a better output.
statement = statement.replace("\n", "")
comment = comment.replace("\n", "")
# Is statement complete
matchSep = re.search(r"[{};]", statement)
if matchSep is None:
saveStatement = statement
statement = ""
else:
saveStatement = statement[matchSep.end() :]
statement = statement[: matchSep.end()]
if isEnum is True:
matchName = re.search(r"\b\w[\S:]+\b", statement)
if matchName is not None:
checkName = statement[
matchName.start() : matchName.end()
]
# Search for "enum".
matchEnum = re.search(r"\benum\b", statement)
if matchEnum is not None:
isEnum = True
# print(f"Matched enum {isEnum}")
endOfLine = statement[matchEnum.end() :]
matchName = re.search(r"\b\w[\S]*\b", endOfLine)
if matchName is not None:
# Test case 8: Check name - no special char
matchNameConv = re.search(
r"\b[A-Z][a-zA-Z0-9]*\b",
endOfLine[matchName.start() : matchName.end()],
)
# Search for a closing brace.
matchClosingBrace = re.search("}", statement)
if isEnum is True and matchClosingBrace is not None:
isEnum = False
continue
# Check if not inside an enum.
if isEnum is False:
# Search for "message".
matchMessage = re.search(r"\bmessage\b", statement)
if matchMessage is not None:
# a new message or a new nested message
numMessage += 1
endOfLine = statement[matchMessage.end() :]
matchName = re.search(r"\b\w[\S]*\b", endOfLine)
if matchName is not None:
# Test case 10: Check name - no special char -
# start with a capital letter
matchNameConv = re.search(
r"\b[A-Z][a-zA-Z0-9]*\b",
endOfLine[matchName.start() : matchName.end()],
)
# print(matchNameConv.group(0))
yml_file.write(
2 * (numMessage - 1) * " "
+ f"{matchNameConv.group(0)}:\n"
)
elif re.search(r"\bextend\b", statement) is not None:
# treat extend as message
numMessage += 1
else:
# Check field names
if numMessage > 0:
matchName = re.search(r"\b\w[\S]*\b\s*=", statement)
if matchName is not None:
checkName = statement[
matchName.start() : matchName.end() - 1
]
# Check field message type (remove field name)
type = statement.replace(checkName, "")
matchName = re.search(r"\b\w[\S\.]*\s*=", type)
# Search for a closing brace.
matchClosingBrace = re.search("}", statement)
if numMessage > 0 and matchClosingBrace is not None:
numMessage -= 1
if matchComment is not None:
if comment != "":
for rulename, ruleregex in rules_dict.items():
if re.search(ruleregex, comment):
rules.append(comment)
shiftCounter = True
elif len(saveStatement) == 0:
if numMessage > 0 or isEnum == True:
if statement.find(";") != -1:
field = statement.strip().split()[2]
yml_file.write(
(2 * numMessage) * " " + f"{field}:\n"
)
# If option --full-osi is enabled:
# Check if is_set is already a rule for the current field, if not, add it.
if full_osi and not any(
"is_set" in rule for rule in rules
):
yml_file.write(
(2 * numMessage + 2) * " "
+ f"- is_set:\n"
)
if shiftCounter:
for rule in rules:
rule_list = rule.split()
# Check if syntax
if "check_if" in rule_list:
yml_file.write(
(2 * numMessage + 2) * " "
+ f"- {rule_list[0]}:\n"
)
yml_file.write(
(2 * numMessage + 4) * " "
+ f"- {rule_list[2]}: {rule_list[3]}\n"
)
yml_file.write(
(2 * numMessage + 6) * " "
+ f"target: {rule_list[1]}\n"
)
yml_file.write(
(2 * numMessage + 4) * " "
+ f"{rule_list[5]}:\n"
)
yml_file.write(
(2 * numMessage + 4) * " "
+ f"- {rule_list[6]}:\n"
)
# First element syntax
elif "first_element" in rule_list:
yml_file.write(
(2 * numMessage + 2) * " "
+ f"- {rule_list[0]}:\n"
)
yml_file.write(
(2 * numMessage + 6) * " "
+ f"{rule_list[1]}:\n"
)
yml_file.write(
(2 * numMessage + 8) * " "
+ f"- {rule_list[2]}: {rule_list[3]}\n"
)
# Last element syntax
elif "last_element" in rule_list:
yml_file.write(
(2 * numMessage + 2) * " "
+ f"- {rule_list[0]}:\n"
)
yml_file.write(
(2 * numMessage + 6) * " "
+ f"{rule_list[1]}:\n"
)
yml_file.write(
(2 * numMessage + 8) * " "
+ f"- {rule_list[2]}: {rule_list[3]}\n"
)
# Standalone rules
elif any(
list_item
in [
"is_globally_unique",
"is_set",
"is_iso_country_code",
]
for list_item in rule_list
):
yml_file.write(
(2 * numMessage + 2) * " "
+ f"-{rule}:\n"
)
# Values or parameters of rules
else:
yml_file.write(
(2 * numMessage + 2) * " "
+ f"-{rule}\n"
)
shiftCounter = False
rules = []
def main():
# Handling of command line arguments
args = command_line_arguments()
gen_yml_rules(args.dir, args.full_osi)
if __name__ == "__main__":
main()