#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from __future__ import print_function
# dia (http://live.gnome.org/Dia) file filter for recoll
# stefan.friedel@iwr.uni-heidelberg.de 2012
#
# add the following to ~/.recoll/mimeconf into the [index] section:
# application/x-dia-diagram = execm rcldia;mimetype=text/plain;charset=utf-8
# and into the [icons] section:
# application/x-dia-diagram = drawing
# and finally under [categories]:
# other = ...\
# application/x-dia-diagram
#
# in ~/.recoll/mimemap:
# .dia = application/x-dia-diagram
# Small fixes from jfd: dia files are sometimes not compressed.
import rclexecm
from rclbasehandler import RclBaseHandler
import re
from gzip import GzipFile
import xml.parsers.expat
# some regexps to parse/format the xml data: delete #/spaces at the b/eol and
# ignore empty lines
rhs = re.compile(r'^#\s*(.*)')
rhe = re.compile(r'(.*)\s*#$')
rempty = re.compile(r'^#?\s*#?$')
# xml parser for dia xml file
class Parser:
def __init__(self,rclem):
self._parser = xml.parsers.expat.ParserCreate(encoding='UTF-8')
self._parser.StartElementHandler = self.startelement
self._parser.EndElementHandler = self.endelement
self._parser.CharacterDataHandler = self.chardata
self.string = []
self.handlethis = False
self.rclem = rclem
def startelement(self, name, attrs):
if name == 'dia:string':
self.handlethis = True
else:
self.handlethis = False
def chardata(self,data):
if self.handlethis:
# check if line is not empty and replace hashes/spaces
if not rempty.search(data):
self.string.append(rhe.sub(r'\1',rhs.sub(r'\1',data)))
def endelement(self,name):
self.handlethis = False
def feed(self, fh):
self._parser.ParseFile(fh)
del self._parser
class DiaExtractor(RclBaseHandler):
def __init__(self, em):
super(DiaExtractor, self).__init__(em)
def html_text(self, fn):
try:
dia = GzipFile(fn, 'rb')
# Dia files are sometimes not compressed. Quite weirdly,
# GzipFile does not complain until we try to read.
data = dia.readline()
dia.seek(0)
except:
# File not compressed ?
dia = open(fn, 'rb')
diap = Parser(self.em)
diap.feed(dia)
html = ''
html += self.em.htmlescape('\n'.join(diap.string))
html += ''
return html
# Main program: create protocol handler and extractor and run them
proto = rclexecm.RclExecM()
extract = DiaExtractor(proto)
rclexecm.main(proto, extract)