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# -*- coding: utf-8 -*-
#
# Copyright © 2006 - 2017 Michal Čihař <michal@cihar.com>
#
# This file is part of Stardicter <https://cihar.com/software/slovnik/>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
"""Base module for stardciter convertors."""
from __future__ import unicode_literals
import codecs
import datetime
import gzip
import hashlib
import json
from operator import attrgetter
import os
import re
import struct
import time
from six.moves.urllib.request import urlopen
from six import BytesIO
from stardicter.word import Word
README_TEXT = r'''{title}
{line}
This is autogenerated dictionary for StarDict.
Data were downloaded from following website:
<{url}>
The original source is available under {license}.
Dictionary was generated using:
Stardicter version {version}
You can get conversion script from:
<https://cihar.com/software/slovnik/>
Install dictionary by copying dictionary files to dic/ folder in
StarDict. On Linux it is usually /usr/share/stardict/dic/, on Windows
C:\Program files\stardict\dic\.
'''
STRIPTAGS = re.compile(r"<.*?>", re.DOTALL)
CONFIGFILE = os.path.expanduser('~/.stardicter')
# type of word (used as title)
FMT_TYPE = '<span size="larger" color="darkred" weight="bold">{0}</span>\n'
AUTHOR = 'Stardicter'
URL = 'https://cihar.com/software/slovnik/'
class StardictWriter(object):
'''
Generic writer for stardict dictionary.
'''
url = None
name = 'Generic'
prefix = ''
source = 'aa'
target = 'bb'
license = ''
bidirectional = True
download_url = None
download_charset = 'utf-8'
download_gzip = False
def __init__(self, ascii=False, notags=False, keyprefix='',
source='', target='', file=None):
self.words = {}
self.reverse = {}
self.description = ''
self.ascii = ascii
self.notags = notags
self._data = None
self._checksum = None
self.keyprefix = keyprefix
if source:
self.source = source
if target:
self.target = target
self.file = file
@property
def data(self):
'''
Returns downloaded data file.
'''
if self._data is None:
self._data = self.download()
return self._data
@property
def lines(self):
'''
Returns lines.
'''
return self.data.splitlines()
@property
def checksum(self):
'''
Returns data checksum.
'''
if self._checksum is None:
self._checksum = self.get_checksum()
return self._checksum
def get_filename(self, forward=True):
'''
Returns filename for dictionary.
'''
if forward:
name = '{0}-{1}'.format(self.source, self.target)
else:
name = '{0}-{1}'.format(self.target, self.source)
suffix = ''
if self.ascii:
suffix += '-ascii'
if self.notags:
suffix += '-notags'
return '{0}{1}{2}'.format(self.prefix, name, suffix)
def get_name(self, forward=True):
'''
Returns dictionary name.
'''
return self.name
def is_data_line(self, line):
'''
Checks whether line is used for checksum. Can be used to exclude
timestamps from data.
'''
return True
def is_header_line(self, line):
'''
Checks whether line is header.
'''
return line[0] == '#'
def add_description(self, line):
'''
Adds description from line.
'''
self.description += line[1:] + '\n'
def get_checksum(self):
'''
Calculated dictionary checksum.
'''
md5 = hashlib.md5()
for line in self.lines:
if self.is_data_line(line):
md5.update(line.encode('utf-8'))
return md5.hexdigest()
def download(self):
'''
Downloads dictionary.
'''
if self.file:
handle = self.file
self.download_gzip = self.file.name.endswith('.gz')
else:
if self.download_url is None:
return 'word\ttranslation\ttype\tnote\tauthor'
handle = urlopen(self.download_url)
if self.download_gzip:
stringio = BytesIO(handle.read())
handle.close()
handle = gzip.GzipFile(fileobj=stringio)
text = handle.read()
return text.decode(self.download_charset)
def parse_line(self, line):
'''
Parses single line with word.
'''
return [Word.from_slovnik(line)]
def parse(self):
'''
Parses dictionary.
'''
for line in self.lines:
# Skip blank lines
if line.strip() == '':
continue
# Description from header
if self.is_header_line(line):
self.add_description(line)
continue
# Parse line
words = self.parse_line(line)
for word in words:
# Skip not translated words
if not word.word or not word.translation:
continue
# Store word
if len(word.word) < 256:
if word.word not in self.words:
self.words[word.word] = []
self.words[word.word].append(word)
# Other direction
if self.bidirectional and len(word.translation) < 256:
if word.translation not in self.reverse:
self.reverse[word.translation] = []
self.reverse[word.translation].append(word.reverse())
# Sort by translation alphabetically
for word in self.words:
self.words[word].sort(key=attrgetter('translation'))
for word in self.reverse:
self.reverse[word].sort(key=attrgetter('translation'))
def convert(self, text, convert=True):
'''
Converts text to match wanted format.
'''
if self.notags:
text = STRIPTAGS.sub('', text)
if not convert:
return text
if self.ascii:
return text.encode('ascii', 'deaccent')
return text.encode('utf-8')
def formatentry(self, words):
'''
Formats dictionary entry.
'''
# sort alphabetically
# array for different word types
alltypes = [
'n:',
'v:',
'adj:',
'adv:',
'prep:',
'conj:',
'interj:',
'num:',
'',
]
# variables used for data
result = ''
typed = {}
# array holding typed words
for key in alltypes:
typed[key] = []
# process all translations
for word in words:
tokens = word.wtype.split()
saved = False
for key in alltypes:
# check if translation is current type
if key in tokens:
saved = True
# remove type from translation, it will be in title
del tokens[tokens.index(key)]
word.wtype = ' '.join(tokens)
# handle irregullar word specially (display them first)
if '[neprav.]' in tokens:
typed[key].insert(0, word)
else:
typed[key].append(word)
break
if not saved:
typed[''].append(word)
# and finally convert entries to text
for typ in alltypes:
if typed[typ]:
# header to display
if typ == '':
result += '\n'
else:
result += FMT_TYPE.format(typ)
for word in typed[typ]:
result += ' '
result += word.format()
return result
def getsortedwords(self, words):
'''
Returns keys of hash sorted case insensitive.
'''
if self.ascii:
tuples = [
(item.encode('ascii', 'deaccent').lower(), item)
for item in words
]
else:
tuples = [
(item.encode('utf-8').lower(), item)
for item in words
]
tuples.sort()
return [item[1] for item in tuples]
def write_words(self, basefilename, name, words):
'''
Writes word list to dictionary files.
'''
# initialize variables
offset = 0
count = 0
idxsize = 0
# File names
dictn = '{0}.dict'.format(basefilename)
idxn = '{0}.idx'.format(basefilename)
# Write dictionary and index
with open(dictn, 'wb') as dictf, open(idxn, 'wb') as idxf:
for key in self.getsortedwords(words):
# format single entry
entry = self.convert(self.formatentry(words[key]))
# write dictionary text
dictf.write(entry)
# write index entry
idxf.write(self.convert(key))
idxf.write(b'\0')
idxf.write(struct.pack(b'!I', offset))
idxf.write(struct.pack(b'!I', len(entry)))
# calculate offset for next index entry
offset += len(entry)
count += 1
# index size is needed in ifo
idxsize = idxf.tell()
self._write_ifo(name, basefilename, count, idxsize)
def _write_ifo(self, name, basefilename, count, idxsize):
'''
Writes info file.
'''
filename = '{0}.ifo'.format(basefilename)
with codecs.open(filename, 'w', 'utf-8') as handle:
handle.write('StarDict\'s dict ifo file\n')
handle.write('version=2.4.2\n')
handle.write(self.convert('bookname={0}\n'.format(name), False))
handle.write('wordcount={0}\n'.format(count))
handle.write('idxfilesize={0}\n'.format(idxsize))
handle.write(self.convert('author={0}\n'.format(AUTHOR), False))
handle.write(self.convert('website={0}\n'.format(URL), False))
# we're using pango markup for all entries
handle.write('sametypesequence=g\n')
now = int(os.environ.get('SOURCE_DATE_EPOCH', time.time()))
today = datetime.datetime.utcfromtimestamp(now)
handle.write(today.strftime('date=%Y.%m.%d\n'))
def write_dict(self, directory):
'''
Writes dictionary into directory.
'''
# Write readme
with open(os.path.join(directory, 'README'), 'wb') as readme:
readme.write(self.get_readme().encode('utf-8'))
if self.description:
readme.write(
'\nOriginal description of dictionary:\n{0}'.format(
self.description
).encode('utf-8')
)
# Write forward dictioanry
self.write_words(
os.path.join(directory, self.get_filename(True)),
self.get_name(True),
self.words
)
# Write reverse dictionary
if self.bidirectional:
self.write_words(
os.path.join(directory, self.get_filename(False)),
self.get_name(False),
self.reverse
)
def get_readme(self):
'''
Generates README text for dictionary.
'''
from stardicter import __version__
title = '{0} for StarDict'.format(self.name)
return README_TEXT.format(
title=title,
line='-' * len(title),
url=self.url,
license=self.license,
version=__version__,
)
def get_config_key(self):
'''
Key used to store MD5 in config.
'''
return 'md5-{0}{1}'.format(self.keyprefix, self.get_filename())
def load_config(self):
'''
Loads checksum cache.
'''
try:
with open(CONFIGFILE) as handle:
return json.load(handle)
except (ValueError, IOError):
return {}
def save_config(self, changes):
'''
Loads checksum cache.
'''
config = self.load_config()
config.update(changes)
with codecs.open(CONFIGFILE, 'wb', 'utf-8') as handle:
json.dump(config, handle, indent=2)
def was_changed(self):
'''
Detects whether dictionary has same content as on last run.
'''
key = self.get_config_key()
config = self.load_config()
if key not in config:
return True
return self.checksum != config[key]
def save_checksum(self):
'''
Saves checksum to configuration.
'''
key = self.get_config_key()
self.save_config({key: self.checksum})
def get_source_name(self):
"""Name for source file."""
name = os.path.basename(self.download_url)
if name.endswith('.gz'):
name = name[:-3]
return name
def write_source(self, directory):
"""Write source file."""
filename = os.path.join(directory, self.get_source_name())
with open(filename, 'wb') as handle:
handle.write(self.data.encode(self.download_charset))
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