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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from secretary import Renderer, parseString
from xml.parsers.expat import ExpatError, ErrorString
from datetime import datetime
import locale
from PIL import Image
import re
from django.conf import settings
RE_UNITS = re.compile("([.0-9]+)([a-z]+)")
def parse_value_unit(value):
m = RE_UNITS.match(value)
if not m:
return None, None
value, unit = m.groups()
value = float(value)
return value, unit
def human_date_filter(value):
try:
value = datetime.strptime(value, "%Y-%m-%d")
except ValueError:
return ""
language_code = settings.LANGUAGE_CODE.split('-')
language_code = language_code[0] + "_" + language_code[1].upper()
for language_suffix in (".utf8", ""):
try:
locale.setlocale(locale.LC_TIME, language_code + language_suffix)
break
except locale.Error:
pass
return value.strftime(settings.DATE_FORMAT)
class IshtarSecretaryRenderer(Renderer):
def __init__(self, *args, **kwargs):
super(IshtarSecretaryRenderer, self).__init__(*args, **kwargs)
self.media_callback = self.ishtar_media_loader
self.media_path = settings.MEDIA_ROOT
self.environment.filters['human_date'] = human_date_filter
def ishtar_media_loader(self, media, *args, **kwargs):
res = self.fs_loader(media, *args, **kwargs)
if not res:
return
image_file, mime = res
if "width" in kwargs:
kwargs['frame_attrs']['svg:width'] = kwargs["width"]
if "height" in kwargs:
kwargs['frame_attrs']['svg:height'] = kwargs["height"]
if "keep_ratio" in args:
image = Image.open(image_file.name)
width, width_unit = parse_value_unit(
kwargs['frame_attrs']['svg:width'])
height, height_unit = parse_value_unit(
kwargs['frame_attrs']['svg:height'])
if "height" not in kwargs and width:
new_height = width * image.height / image.width
kwargs['frame_attrs']['svg:height'] = "{}{}".format(
new_height, width_unit
)
if "width" not in kwargs and height:
new_width = height * image.width / image.height
kwargs['frame_attrs']['svg:width'] = "{}{}".format(
new_width, height_unit
)
return image_file, mime
def _render_xml(self, xml_document, **kwargs):
# Prepare the xml object to be processed by jinja2
self.log.debug('Rendering XML object')
template_string = ""
try:
self.template_images = dict()
self._prepare_document_tags(xml_document)
xml_source = xml_document.toxml()
xml_source = xml_source.encode('ascii', 'xmlcharrefreplace')
jinja_template = self.environment.from_string(
self._unescape_entities(xml_source.decode('utf-8'))
)
result = jinja_template.render(**kwargs)
final_xml = parseString(result.encode('ascii', 'xmlcharrefreplace'))
if self.template_images:
self.replace_images(final_xml)
return final_xml
except ExpatError as e:
if not 'result' in locals():
result = xml_source
### changes
try:
near = result.split('\n')[e.lineno -1][e.offset-200:e.offset+200]
except IndexError:
near = "..."
print(result)
### endchanges
raise ExpatError('ExpatError "%s" at line %d, column %d\nNear of: "[...]%s[...]"' % \
(ErrorString(e.code), e.lineno, e.offset, near))
except:
self.log.error('Error rendering template:\n%s',
xml_document.toprettyxml(), exc_info=True)
self.log.error('Unescaped template was:\n{0}'.format(template_string))
raise
finally:
self.log.debug('Rendering xml object finished')
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