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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Created by [email protected] at 2015-07-30
import os
import argparse
import yaml
import jinja2
class FilePathLoader(jinja2.BaseLoader):
""" Custom Jinja2 template loader which just loads a single template file """
def __init__(self, cwd):
self.cwd = cwd
def get_source(self, environment, template):
# Path
filename = os.path.join(self.cwd, template)
# Read
try:
with open(filename, 'r') as f:
contents = f.read()
except IOError:
raise jinja2.TemplateNotFound(filename)
# Finish
uptodate = lambda: False
return contents, filename, uptodate
def render_template(cwd, template_path, context):
env = jinja2.Environment(loader=FilePathLoader(cwd))
return env \
.get_template(template_path) \
.render(context)
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--dir', default='.', help='Template directory')
parser.add_argument('--data', nargs='*', help='One or more YAML data file')
parser.add_argument('--template', help='Template file to process')
parser.add_argument('--body', help='Body content')
args = parser.parse_args()
context = dict()
for data_f in args.data if args.data else []:
key, filename = data_f.split(':')
if filename:
context[key] = yaml.load(open(filename).read())
else:
context[key] = {'_': True}
if args.body:
context['body'] = open(args.body).read()
return render_template(
args.dir,
args.template,
context
)
if __name__ == '__main__':
print(main())
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