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marceloandriolli/simpler.py

Last active November 21, 2018 01:06
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Simple email template tags
Raw
simpler.py
from string import Template
class DefaultTemplateTag(Template):
delimiter = '{{'
pattern = '''
\{\{(?:
(?P<escaped>\{\{)|
(?P<named>[_a-z][_a-z0-9]*)\}\}|
(?P<braced>[_a-z][_a-z0-9]*)\}\}|
(?P<invalid>)
)
'''
class SimpleEmailTags:
def __init__(self, template=DefaultTemplateTag):
self.template = template
def _open_file(self, file_name):
with open(file_name) as file:
return file.read()
def _load_tags(self, html_string, tags):
return self.template(html_string).safe_substitute(tags)
def as_str(self, file_name, tags):
if not file_name and tags:
raise Exception('file and tags argument must be not None')
html_string = self._open_file(file_name)
return self._load_tags(html_string, tags)
"""
Usage:
content of base.html file:
<!DOCTYPE html>
<html>
<body>
<h1>Meu chamo {{nome}}</h1>
<p>Tenho {{idade}}</p>
</body>
</html>
>> content = SimpleEmailTags()
>> content.as_str('base.html', tag={'nome': 'Marcelo', 'idade': '33 anos'})
>> '<!DOCTYPE html>\n<html>\n\n<body>\n\n <h1>Meu chamo Marcelo</h1>\n <p>Tenho 33 anos</p>\n\n</body>\n\n</html>'
"""
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