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# ClEmail - class for generation email messages
import os
import jinja2
# Subject line prefix in template file
SUBJECT_LINE_PREFIX = 'Subject:'
class ClEmail:
def __init__(self):
pass
@staticmethod
def generate_mail_jinja2(template_dir, templ_filename, templ_data=None, locale_name=None, subject=None):
"""
Generates email message using jinja2 template engine
:param template_dir: Base templates directory
:param templ_filename: Template filename
:param templ_data: Data to fill template using jinja2
:param locale_name: Locale
:param subject: Email subject to use if it not found in template
:return: Cortege (email_subject, email_body)
"""
# default locale is en_US
def_locale = 'en_US'
locale_name = locale_name or def_locale
templ_dir = os.path.join(template_dir, locale_name)
if locale_name != def_locale and not os.path.isfile(os.path.join(templ_dir, templ_filename)):
templ_dir = os.path.join(template_dir, def_locale)
template_file = os.path.join(templ_dir, templ_filename)
# Read template file content
f_template = open(template_file, "r")
template_lines = f_template.readlines()
f_template.close()
# Search subject string in template content
if len(template_lines) > 2 and template_lines[0].startswith(SUBJECT_LINE_PREFIX) and template_lines[1] == '\n':
subject = template_lines[0].replace(SUBJECT_LINE_PREFIX, '').strip()
# Remove Subject line and separator (empty line) from array
template_lines.pop(1)
template_lines.pop(0)
pass
# Create dictionary for jinja2 Dict Loader
template_lines = [l.decode('utf-8') for l in template_lines]
templ_dict = {templ_filename: ''.join(template_lines)}
templ_loader = jinja2.DictLoader(templ_dict)
templ_envir = jinja2.Environment(loader=templ_loader)
body_message = templ_envir.get_template(templ_filename).render(templ_data)
return subject, body_message.encode('utf-8')