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#!/usr/bin/env python3
import importlib
import jinja2
import pathlib
import subprocess
import sys
import yaml
# Find where we are
localdir = pathlib.Path(__file__).parent
# Prepare Jinja2 environment
env = jinja2.Environment(loader=jinja2.FileSystemLoader(str(localdir)))
env.filters.update({ "to_yaml": lambda x: "" if type(x) is jinja2.runtime.Undefined else yaml.dump(x).rstrip() })
# Load and process input data
try:
data = yaml.safe_load(rendered := env.get_template(f'data.yml.j2').render({}))
except yaml.parser.ParserError as e:
print("Failed to render input data, generated output here:")
print(rendered)
raise e
# Load the actual template
template = env.get_template(f'template.yml.j2')
# Render the template
final = template.render({ **data })
# YAML is picky about tabs, forbid them
assert('\t' not in final)
# Produce output
print(final)
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