def getExercise(exercise):
'''returns an html-representation of an exercise'''
result = '<h1>%s</h1>\n' % exercise['title']
result += mdTeX2html.convert(exercise['exercise'])
if exercise['solution'] != '':
result += '<hr />\n'
result += '<h1>Lösung</h1>\n'
result += mdTeX2html.convert(exercise['solution'])
if exercise['origin'] != '':
result += '<p style="text-align:right;">Quelle: %s</p>\n' % exercise['origin']
if exercise['comment'] != '':
result += '<hr />\n'
result += '<h2>Bemerkungen</h2>\n'
result += mdTeX2html.convert(exercise['comment'])
result += '<p style="text-align:right;" class="no-print"><a href="../exerciseEdit/%s">Aufgabe bearbeiten</a></p>\n' % exercise['id']
return result
def do_POST(self):
''' all operations on an exercise like editing is done via POST-Requests '''
self._set_headers()
postvars = self.parse_POST()
# path-switch
if self.path == '/mdtex2html':
try:
result = mdTeX2html.convert(postvars)
except Exception as e:
result = 'ERROR: Could not convert the mdTeX to HTML:' + str(e)
elif self.path == '/getExerciseJson':
e = db.getExercise(postvars)
result = json.dumps(e)
elif self.path == '/getTopicsJson':
t = db.getTopics()
result = json.dumps(t)
elif self.path == '/getLicensesJson':
l = db.getLicenses()
result = json.dumps(l)
elif self.path == '/saveExercise':
print(postvars)
if postvars['id'] == '':
result = str(db.insertExercise(postvars))
elif postvars['id'].isnumeric():
result = db.editExercise(postvars)
self.wfile.write(bytes(result, "utf8"))
return
async def register(websocket):
USERS.add(websocket)
print('user added, ' + str(len(USERS))+ ' user(s) online')
html = mdTeX2html.convert(mdtex.value)
replyd = {'mdtex': mdtex.value, 'html': html}
replyj = json.dumps(replyd)
await asyncio.wait([user.send(replyj) for user in USERS])
def getTest():
'''returns a Testpage, rendered from the test.mdtex in test folder'''
with open('test/test.mdtex', 'r') as f:
mdtex = f.read()
result = mdTeX2html.convert(mdtex)
result += '<br>\n'
result += 'Webrequest-Test:<br>\n'
result += '<div id="requestbox">Ursprünglicher Requestbox-Testinhalt</div>\n'
result += '<button onClick="request();">request-test</button>\n'
return result
def getSheet(title, exercises, option):
''' returns a sheet with exercises/solutions/source according to options '''
result = '<h1>%s</h1>' % title
i = 1
if option=='exercises' or option=='':
for ex in exercises:
result += '<h2>Aufgabe %s: %s</h2>' % (str(i), ex['title'])
result += mdTeX2html.convert(ex['exercise'])
i+=1
elif option == 'solutions':
for ex in exercises:
result += '<h2>Aufgabe %s: %s</h2>' % (str(i), ex['title'])
result += mdTeX2html.convert(ex[5])
i+=1
elif option == 'source':
for ex in exercises:
result += '<pre>'
result += '# '+ex['title']+'<br />\n'
result += ex['exercise']
result += '</pre><br />\n'
else:
result = '<p style="color:red;">ERROR 404: Illegal URL, I didn\'t understand your option!</p>'
return result
async def wsHandler(websocket, path):
# Register.
await register(websocket)
try:
async for message in websocket:
mdtex.value = message
html = mdTeX2html.convert(message)
replyd = {'mdtex': message, 'html': html}
replyj = json.dumps(replyd)
if USERS: # asyncio.wait doesn't accept an empty list
await asyncio.wait([user.send(replyj) for user in USERS])
except:
pass
finally:
await unregister(websocket)