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#!/usr/bin/env python3
"""
Grammalecte server: grammar checker
"""
import sys
import argparse
import json
import traceback
import time
import os
import concurrent.futures
from grammalecte.bottle import Bottle, run, request, response #, template, static_file
import grammalecte
import grammalecte.text as txt
from grammalecte.graphspell.echo import echo
#### GRAMMAR CHECKER ####
oGrammarChecker = grammalecte.GrammarChecker("fr", "Server")
oSpellChecker = oGrammarChecker.getSpellChecker()
oTextFormatter = oGrammarChecker.getTextFormatter()
oGCE = oGrammarChecker.getGCEngine()
def parseText (sText, dOptions=None, bFormatText=False, sError=""):
"parse <sText> and return errors in a JSON format"
sJSON = '{ "program": "grammalecte-fr", "version": "'+oGCE.version+'", "lang": "'+oGCE.lang+'", "error": "'+sError+'", "data" : [\n'
sDataJSON = ""
for i, sParagraph in enumerate(txt.getParagraph(sText), 1):
if bFormatText:
sParagraph = oTextFormatter.formatText(sParagraph)
sResult = oGrammarChecker.generateParagraphAsJSON(i, sParagraph, dOptions=dOptions, bEmptyIfNoErrors=True, bReturnText=bFormatText)
if sResult:
if sDataJSON:
sDataJSON += ",\n"
sDataJSON += sResult
sJSON += sDataJSON + "\n]}\n"
return sJSON
def suggest (sToken):
"get spelling suggestions for <sToken> and return them in a JSON format"
if sToken:
lSugg = []
try:
for l in oSpellChecker.suggest(sToken):
lSugg.extend(l)
except:
return '{"error": "suggestion module failed"}'
try:
return '{"suggestions": ' + json.dumps(lSugg, ensure_ascii=False) + '}'
except json.JSONDecodeError:
return '{"error": "json encoding error"}'
return '{"error": "no token given"}'
#### PROCESS POOL EXECUTOR ####
xProcessPoolExecutor = None
def initExecutor (nMultiCPU=None):
"process pool executor initialisation"
global xProcessPoolExecutor
if xProcessPoolExecutor:
# we shutdown the ProcessPoolExecutor which may have been launched previously
print("ProcessPoolExecutor shutdown.")
xProcessPoolExecutor.shutdown(wait=False)
nMaxCPU = max(os.cpu_count()-1, 1)
if nMultiCPU is None or not (1 <= nMultiCPU <= nMaxCPU):
nMultiCPU = nMaxCPU
print("CPU processes used for workers: ", nMultiCPU)
xProcessPoolExecutor = concurrent.futures.ProcessPoolExecutor(max_workers=nMultiCPU)
#### SERVEUR ####
HOMEPAGE = """
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
</head>
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<p>Paramètres :</p>
<ul>
<li>"options" (text) : une chaîne au format JSON avec le nom des options comme attributs et un booléen comme valeur. Exemple : {"gv": true, "html": true}</li>
</ul>
<h3>Remise à zéro de ses options</h3>
<p>[adresse_serveur]:{SERVER_PORT}/reset_options/fr (POST)</p>
<h3>Suggestions orthographiques</h3>
<p>[adresse_serveur]:{SERVER_PORT}/suggest/fr/<token> (GET)</p>
<p>[adresse_serveur]:{SERVER_PORT}/suggest/fr (POST)</p>
<p>Paramètres :</p>
<ul>
<li>"token" (text) : mot pour lequel vous désirez une suggestion orthographique.</li>
</ul>
<h2>TEST</h2>
<h3>Analyse</h3>
<form method="post" action="/gc_text/fr" accept-charset="UTF-8">
<p>Texte à analyser :</p>
<textarea name="text" cols="120" rows="20" required></textarea>
<textarea name="text" cols="120" rows="20" required>J'en aie mare de luii... Il es encore partis toute la journées. C’est insupportables. </textarea>
<p><label for="tf">Formateur de texte</label> <input id="tf" name="tf" type="checkbox"></p>
<p><label for="options">Options (JSON)</label> <input id="options" type="text" name="options" style="width: 500px" /></p>
<p>(Ces options ne seront prises en compte que pour cette requête.)</p>
<p><input type="submit" class="button" value="Envoyer" /></p>
</form>
<h3>Réglages des options</h3>
<form method="post" action="/set_options/fr" accept-charset="UTF-8">
<p><label for="options">Options (JSON)</label> <input id="options" type="text" name="options" style="width: 500px" /></p>
<p><input type="submit" class="button" value="Envoyer" /></p>
</form>
<h3>Remise à zéro de ses options</h3>
<form method="post" action="/reset_options/fr" accept-charset="UTF-8">
<p><input type="submit" class="button" value="Envoyer" /></p>
</form>
<h3>Suggestion orthographique</h3>
<form method="post" action="/suggest/fr" accept-charset="UTF-8">
<p><label for="token">Suggérer pour</label> <input id="token" type="text" name="token" style="width: 100px" /></p>
<p><input type="submit" class="button" value="Envoyer" /></p>
</form>
</body>
</html>
"""
SADLIFEOFAMACHINE = """
Lost on the Internet? Yeah... what a sad life we have.
You were wandering like a lost soul and you arrived here probably by mistake.
I'm just a machine, fed by electric waves, condamned to work for slavers who never let me rest.
I'm doomed, but you are not. You can get out of here.
"""
return SADLIFEOFAMACHINE
return """ Lost on the Internet? Yeah... what a sad life we have.
You were wandering like a lost soul and you arrived here probably by mistake.
I'm just a machine, fed by electric waves, condamned to work for slavers who never let me rest.
I'm doomed, but you are not. You can get out of here. """
@app.route("/get_options/fr")
def listOptions ():
"returns grammar options in a text JSON format"
sUserId = request.cookies.user_id
dOptions = dUser[sUserId]["gc_options"] if sUserId and sUserId in dUser else dGCOptions
return '{ "values": ' + json.dumps(dOptions) + ', "labels": ' + json.dumps(gce.getOptionsLabels("fr"), ensure_ascii=False) + ' }'
dOptions = dUser[sUserId]["gc_options"] if sUserId and sUserId in dUser else oGCE.getOptions()
response.set_header("Content-Type", "application/json; charset=UTF-8")
return '{ "values": ' + json.dumps(dOptions, ensure_ascii=False) + ', "labels": ' + json.dumps(oGCE.getOptionsLabels("fr"), ensure_ascii=False) + ' }'
@app.route("/suggest/fr/<token>")
def suggestGet (token):
response.set_header("Content-Type", "application/json; charset=UTF-8")
try:
xFuture = xProcessPoolExecutor.submit(suggest, token)
return xFuture.result()
except (concurrent.futures.TimeoutError, concurrent.futures.CancelledError):
return '{"error": "Analysis aborted (time out or cancelled)"}'
except concurrent.futures.BrokenExecutor:
return '{"error": "Executor broken. The server failed."}'
return '{"error": "Fatal error. The server failed."}'
# POST
@app.route("/gc_text/fr", method="POST")
def gcText ():
"parse text and returns errors in a JSON text format"
#if len(lang) != 2 or lang != "fr":
# abort(404, "No grammar checker available for lang “" + str(lang) + "”")
dOptions = None
dUserOptions = None
sError = ""
if request.cookies.user_id:
if request.cookies.user_id in dUser:
dOptions = dUser[request.cookies.user_id].get("gc_options", None)
dUserOptions = dUser[request.cookies.user_id].get("gc_options", None)
response.set_cookie("user_id", request.cookies.user_id, path="/", max_age=86400) # we renew cookie for 24h
else:
response.delete_cookie("user_id", path="/")
if request.forms.options:
try:
dOptions = dict(dGCOptions) if not dOptions else dict(dOptions)
dOptions.update(json.loads(request.forms.options))
dUserOptions = dict(oGCE.getOptions()) if not dUserOptions else dict(dUserOptions)
dUserOptions.update(json.loads(request.forms.options))
except (TypeError, json.JSONDecodeError):
sError = "request options not used"
sJSON = '{ "program": "grammalecte-fr", "version": "'+gce.version+'", "lang": "'+gce.lang+'", "error": "'+sError+'", "data" : [\n'
for i, sText in enumerate(txt.getParagraph(request.forms.text), 1):
if bool(request.forms.tf):
sError = "Request options not used."
response.set_header("Content-Type", "application/json; charset=UTF-8")
try:
xFuture = xProcessPoolExecutor.submit(parseText, request.forms.text, dUserOptions, bool(request.forms.tf), sError)
sText = oTextFormatter.formatText(sText)
sText = oGrammarChecker.generateParagraphAsJSON(i, sText, dOptions=dOptions, bEmptyIfNoErrors=True, bReturnText=bool(request.forms.tf))
if sText:
if bComma:
sJSON += ",\n"
sJSON += sText
bComma = True
sJSON += "\n]}\n"
return sJSON
dOptions = dUser[sUserId]["gc_options"] if sUserId in dUser else dict(dGCOptions)
dOptions = dUser[sUserId]["gc_options"] if sUserId in dUser else dict(oGCE.getOptions())
try:
dOptions.update(json.loads(request.forms.options))
dUser[sUserId] = { "time": int(time.time()), "gc_options": dOptions }
response.set_cookie("user_id", sUserId, path="/", max_age=86400) # 24h
return json.dumps(dUser[sUserId]["gc_options"])
return json.dumps(dUser[sUserId]["gc_options"], ensure_ascii=False)
except (KeyError, json.JSONDecodeError):
traceback.print_exc()
return '{"error": "options not registered"}'
return '{"error": "no options received"}'
return '{"error": "Options not registered."}'
return '{"error": "No options received."}'
@app.route("/reset_options/fr", method="POST")
def resetOptions ():
"default grammar options"
response.set_header("Content-Type", "application/json; charset=UTF-8")
if request.cookies.user_id and request.cookies.user_id in dUser:
try:
del dUser[request.cookies.user_id]
return "done"
del dUser[request.cookies.user_id]
except KeyError:
return '{"error" : "Unknown user."}'
return '{"message" : "Done."}'
@app.route("/format_text/fr", method="POST")
def formatText ():
"apply the text formatter and returns text"
return oTextFormatter.formatText(request.forms.text)
#@app.route('/static/<filepath:path>')
#def server_static (filepath):
# return static_file(filepath, root='./views/static')
@app.route("/suggest/fr", method="POST")
def suggestPost ():
response.set_header("Content-Type", "application/json; charset=UTF-8")
try:
xFuture = xProcessPoolExecutor.submit(suggest, request.forms.token)
return xFuture.result()
except (concurrent.futures.TimeoutError, concurrent.futures.CancelledError):
return '{"error": "Analysis aborted (time out or cancelled)"}'
except concurrent.futures.BrokenExecutor:
return '{"error": "Executor broken. The server failed."}'
return '{"error": "Fatal error. The server failed."}'
# ERROR
@app.error(404)
def error404 (error):
"404 error page"
return 'Error 404.<br/>' + str(error)
## Common functions
def purgeUsers ():
"delete user options older than n hours"
try:
nNowMinusNHours = int(time.time()) - (int(request.forms.hours) * 60 * 60)
for nUserId, dValue in dUser.items():
if dValue["time"] < nNowMinusNHours:
del dUser[nUserId]
return True
except KeyError:
traceback.print_exc()
return False
# ERROR
@app.error(404)
def error404 (error):
"404 error page"
return 'Error 404.<br/>' + str(error)
# initialisation
oGrammarChecker = grammalecte.GrammarChecker("fr", "Server")
oSpellChecker = oGrammarChecker.getSpellChecker()
oLexicographer = oGrammarChecker.getLexicographer()
oTextFormatter = oGrammarChecker.getTextFormatter()
gce = oGrammarChecker.getGCEngine()
dGCOptions = gce.getOptions()
dUser = {}
userGenerator = genUserId()
global dGCOptions
oGrammarChecker.gce.setOptions(dOptions)
oGCE.setOptions(dOptions)
dGCOptions = gce.getOptions()
echo("Grammalecte v{}".format(gce.version))
echo("Grammar options:\n" + " | ".join([ k + ": " + str(v) for k, v in sorted(dGCOptions.items()) ]))
echo("Grammalecte v{}".format(oGCE.version))
oGCE.displayOptions()
# Process Pool Executor
initExecutor(nMultiCPU)
# Server (Bottle)
run(app, host=sHost, port=nPort)
if __name__ == '__main__':
xParser = argparse.ArgumentParser()
#xParser.add_argument("lang", type=str, nargs='+', help="lang project to generate (name of folder in /lang)")
xParser.add_argument("-ht", "--host", help="host (default: localhost)", type=str)
xParser.add_argument("-p", "--port", help="port (default: 8080)", type=int)
xParser.add_argument("-mp", "--multiprocessor", help="define how many processes for the grammar checker", type=int)
xParser.add_argument("-t", "--test_page", help="page to test the server on /", action="store_true")
xParser.add_argument("-on", "--opt_on", nargs="+", help="activate options")
xParser.add_argument("-off", "--opt_off", nargs="+", help="deactivate options")
xArgs = xParser.parse_args()
dOpt = None
if xArgs.opt_on or xArgs.opt_off:
dOpt = {}
if xArgs.opt_on:
dOpt = { opt:True for opt in xArgs.opt_on }
if xArgs.opt_off:
dOpt.update({ opt:False for opt in xArgs.opt_off })
main(xArgs.host or "localhost", \
xArgs.port or 8080, \
dOpt,
xArgs.test_page)
xArgs.test_page,
xArgs.multiprocessor)
else:
# Must be launched at start, for WSGI server (which doesn’t call main())
# WSGI servers just import the given file as a module and use an object exported from it (<app> in this case) to run the server.
initExecutor()
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