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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import re
from secretary import Renderer
from lxml import etree
from xml.dom.minidom import parseString
from xml.parsers.expat import ExpatError, ErrorString
from PIL import Image
from django.conf import settings
from .jinja_filters import capfirst_filter, capitalize_filter, \
euro_format, float_format, human_date_filter, lowerfirst_filter, \
number_to_words, replace_line_breaks, short_date_filter
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 add_filter(value1, value2):
try:
return float(value1 or 0) + float(value2 or 0)
except ValueError:
return 0
def sub_filter(value1, value2):
try:
return float(value1 or 0) - float(value2 or 0)
except ValueError:
return 0
def multiply_filter(value1, value2):
try:
return float(value1 or 0) * float(value2 or 0)
except ValueError:
return 0
def splitpart(value, index, index_end=None, char=",", merge_character=None):
if index_end:
try:
index_end = int(index_end)
if not merge_character: # merge is assumed
merge_character = char
except ValueError:
# old filter use - manage compatibility
merge_character = char
char = index_end
index_end = None
if not value or (not index and index != 0):
return ""
if merge_character is True: # old filter use
merge_character = char
splited = value.split(char)
if len(splited) <= index:
return ""
if not merge_character:
return splited[index]
if index_end:
splited = splited[index:index_end]
else:
splited = splited[index:]
return merge_character.join(splited)
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
self.environment.filters["capfirst"] = capfirst_filter
self.environment.filters["lowerfirst"] = lowerfirst_filter
self.environment.filters["capitalize"] = capitalize_filter
self.environment.filters["float_format"] = float_format
self.environment.filters["euro_format"] = euro_format
self.environment.filters["number_to_words"] = number_to_words
self.environment.filters["replace_line_breaks"] = replace_line_breaks
self.environment.filters["splitpart"] = splitpart
self.environment.filters["multiply"] = multiply_filter
self.environment.filters["add"] = add_filter
self.environment.filters["sub"] = sub_filter
self.environment.filters["short_date"] = short_date_filter
def ishtar_media_loader(self, media, *args, **kwargs):
res = self.fs_loader(media, *args, **kwargs)
if not res or not res[0]:
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)
# try to fix xml with mismatched tags
parser = etree.XMLParser(recover=True)
recovered_xml = etree.fromstring(result.encode("ascii", "xmlcharrefreplace"), parser)
final_xml = parseString(etree.tostring(recovered_xml))
if self.template_images:
self.replace_images(final_xml)
return final_xml
except ExpatError as e:
if "result" not in locals():
result = xml_source
### changes
try:
near = result.split("\n")[e.lineno - 1][e.offset - 500 : e.offset + 500]
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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