forked from jxmorris12/language_tool_python
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathserver.py
More file actions
335 lines (299 loc) · 12.3 KB
/
Copy pathserver.py
File metadata and controls
335 lines (299 loc) · 12.3 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
from typing import Dict
import atexit
import http.client
import json
import os
import re
import requests
import socket
import threading
import urllib.parse
from weakref import WeakValueDictionary
from .backports import subprocess
from .download_lt import download_lt
from .language_tag import LanguageTag
from .match import Match
from .utils import (
correct,
parse_url, get_locale_language, get_language_tool_directory, get_server_cmd,
FAILSAFE_LANGUAGE, startupinfo,
LanguageToolError, ServerError, JavaError, PathError)
DEBUG_MODE = False
# Keep track of running server PIDs in a global list. This way,
# we can ensure they're killed on exit.
RUNNING_SERVER_PROCESSES = []
class LanguageTool:
""" Main class used for checking text against different rules.
LanguageTool v2 API documentation: https://languagetool.org/http-api/swagger-ui/#!/default/post_check
"""
_HOST = socket.gethostbyname('localhost')
_MIN_PORT = 8081
_MAX_PORT = 8999
_TIMEOUT = 5 * 60
_remote = False
_port = _MIN_PORT
_server = None
_consumer_thread = None
_instances = WeakValueDictionary()
_PORT_RE = re.compile(r"(?:https?://.*:|port\s+)(\d+)", re.I)
def __init__(self, language=None, motherTongue=None, remote_server=None, newSpellings=None, new_spellings_persist=True):
self._new_spellings = None
self._new_spellings_persist = new_spellings_persist
if remote_server is not None:
self._remote = True
self._url = parse_url(remote_server)
self._url = urllib.parse.urljoin(self._url, 'v2/')
self._update_remote_server_config(self._url)
elif not self._server_is_alive():
self._start_server_on_free_port()
if language is None:
try:
language = get_locale_language()
except ValueError:
language = FAILSAFE_LANGUAGE
if newSpellings:
self._new_spellings = newSpellings
self._register_spellings(self._new_spellings)
self._language = LanguageTag(language, self._get_languages())
self.motherTongue = motherTongue
self.disabled_rules = set()
self.enabled_rules = set()
self.disabled_categories = set()
self.enabled_categories = set()
self.enabled_rules_only = False
self.preferred_variants = set()
self._instances[id(self)] = self
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self.close()
def __repr__(self):
return '{}(language={!r}, motherTongue={!r})'.format(
self.__class__.__name__, self.language, self.motherTongue)
def close(self):
if not self._instances and self._server_is_alive():
self._terminate_server()
if not self._new_spellings_persist and self._new_spellings:
self._unregister_spellings()
self._new_spellings = []
@property
def language(self):
"""The language to be used."""
return self._language
@language.setter
def language(self, language):
self._language = LanguageTag(language, self._get_languages())
self.disabled_rules.clear()
self.enabled_rules.clear()
@property
def motherTongue(self):
"""The user's mother tongue or None.
The mother tongue may also be used as a source language for
checking bilingual texts.
"""
return self._motherTongue
@motherTongue.setter
def motherTongue(self, motherTongue):
self._motherTongue = (None if motherTongue is None
else LanguageTag(motherTongue, self._get_languages()))
@property
def _spell_checking_categories(self):
return {'TYPOS'}
def check(self, text: str) -> [Match]:
"""Match text against enabled rules."""
url = urllib.parse.urljoin(self._url, 'check')
response = self._query_server(url, self._create_params(text))
matches = response['matches']
return [Match(match) for match in matches]
def _create_params(self, text: str) -> Dict[str, str]:
params = {'language': str(self.language), 'text': text}
if self.motherTongue is not None:
params['motherTongue'] = self.motherTongue
if self.disabled_rules:
params['disabledRules'] = ','.join(self.disabled_rules)
if self.enabled_rules:
params['enabledRules'] = ','.join(self.enabled_rules)
if self.enabled_rules_only:
params['enabledOnly'] = 'true'
if self.disabled_categories:
params['disabledCategories'] = ','.join(self.disabled_categories)
if self.enabled_categories:
params['enabledCategories'] = ','.join(self.enabled_categories)
if self.preferred_variants:
params['preferredVariants'] = ','.join(self.preferred_variants)
# return urllib.parse.urlencode(params).encode()
return params
def correct(self, text: str) -> str:
"""Automatically apply suggestions to the text."""
return correct(text, self.check(text))
def enable_spellchecking(self):
"""Enable spell-checking rules."""
self.disabled_categories.difference_update(self._spell_checking_categories)
def disable_spellchecking(self):
"""Disable spell-checking rules."""
self.disabled_categories.update(self._spell_checking_categories)
@staticmethod
def _get_valid_spelling_file_path() -> str:
library_path = get_language_tool_directory()
spelling_file_path = os.path.join(library_path, "org/languagetool/resource/en/hunspell/spelling.txt")
if not os.path.exists(spelling_file_path):
raise FileNotFoundError("Failed to find the spellings file at {}\n Please file an issue at "
"https://github.com/jxmorris12/language_tool_python/issues"
.format(spelling_file_path))
return spelling_file_path
def _register_spellings(self, spellings):
spelling_file_path = self._get_valid_spelling_file_path()
with open(spelling_file_path, "a+", encoding='utf-8') as spellings_file:
spellings_file.write("\n" + "\n".join([word for word in spellings]))
if DEBUG_MODE:
print("Registered new spellings at {}".format(spelling_file_path))
def _unregister_spellings(self):
spelling_file_path = self._get_valid_spelling_file_path()
with open(spelling_file_path, 'r+', encoding='utf-8') as spellings_file:
spellings_file.seek(0, os.SEEK_END)
for _ in range(len(self._new_spellings)):
while spellings_file.read(1) != '\n':
spellings_file.seek(spellings_file.tell() - 2, os.SEEK_SET)
spellings_file.seek(spellings_file.tell() - 2, os.SEEK_SET)
spellings_file.seek(spellings_file.tell() + 1, os.SEEK_SET)
spellings_file.truncate()
if DEBUG_MODE:
print("Unregistered new spellings at {}".format(spelling_file_path))
def _get_languages(self) -> set:
"""Get supported languages (by querying the server)."""
self._start_server_if_needed()
url = urllib.parse.urljoin(self._url, 'languages')
languages = set()
for e in self._query_server(url, num_tries=1):
languages.add(e.get('code'))
languages.add(e.get('longCode'))
languages.add("auto")
return languages
def _start_server_if_needed(self):
# Start server.
if not self._server_is_alive() and self._remote is False:
self._start_server_on_free_port()
def _update_remote_server_config(self, url):
self._url = url
self._remote = True
def _query_server(self, url, params=None, num_tries=2):
if DEBUG_MODE:
print('_query_server url:', url, 'params:', params)
for n in range(num_tries):
try:
with requests.get(url, params=params, timeout=self._TIMEOUT) as response:
try:
return response.json()
except json.decoder.JSONDecodeError as e:
print('URL {} and params {} returned invalid JSON response:'.format(url, params))
print(response)
print(response.content)
raise e
except (IOError, http.client.HTTPException) as e:
if self._remote is False:
self._terminate_server()
self._start_local_server()
if n + 1 >= num_tries:
raise LanguageToolError('{}: {}'.format(self._url, e))
def _start_server_on_free_port(self):
while True:
self._url = 'http://{}:{}/v2/'.format(self._HOST, self._port)
try:
self._start_local_server()
break
except ServerError:
if self._MIN_PORT <= self._port < self._MAX_PORT:
self._port += 1
else:
raise
def _start_local_server(self):
# Before starting local server, download language tool if needed.
download_lt()
err = None
try:
server_cmd = get_server_cmd(self._port)
except PathError as e:
# Can't find path to LanguageTool.
err = e
else:
# Need to PIPE all handles: http://bugs.python.org/issue3905
self._server = subprocess.Popen(
server_cmd,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
universal_newlines=True,
startupinfo=startupinfo
)
global RUNNING_SERVER_PROCESSES
RUNNING_SERVER_PROCESSES.append(self._server)
match = None
while True:
line = self._server.stdout.readline()
if not line:
break
match = self._PORT_RE.search(line)
if match:
port = int(match.group(1))
if port != self._port:
raise LanguageToolError('requested port {}, but got {}'.format(
self._port, port))
break
if not match:
err_msg = self._terminate_server()
match = self._PORT_RE.search(err_msg)
if not match:
raise LanguageToolError(err_msg)
port = int(match.group(1))
if port != self._port:
raise LanguageToolError(err_msg)
if self._server:
self._consumer_thread = threading.Thread(
target=lambda: _consume(self._server.stdout))
self._consumer_thread.daemon = True
self._consumer_thread.start()
else:
# Couldn't start the server, so maybe there is already one running.
raise ServerError('Server running; don\'t start a server here.')
def _server_is_alive(self):
return self._server and self._server.poll() is None
def _terminate_server(self):
LanguageToolError_message = ''
try:
self._server.terminate()
except OSError:
pass
try:
LanguageToolError_message = self._server.communicate()[1].strip()
except (IOError, ValueError):
pass
try:
self._server.stdout.close()
except IOError:
pass
try:
self._server.stdin.close()
except IOError:
pass
try:
self._server.stderr.close()
except IOError:
pass
self._server = None
return LanguageToolError_message
class LanguageToolPublicAPI(LanguageTool):
""" Language tool client of the official API. """
def __init__(self, *args, **kwargs):
super().__init__(*args, remote_server='https://languagetool.org/api/', **kwargs)
@atexit.register
def terminate_server():
"""Terminate the server."""
for proc in RUNNING_SERVER_PROCESSES:
proc.terminate()
def _consume(stdout):
"""Consume/ignore the rest of the server output.
Without this, the server will end up hanging due to the buffer
filling up.
"""
while stdout.readline():
pass