def __init__(self, data):
"""
The Python constructor. You should use :meth:`make` or
:meth:`lookup` to construct instances.
"""
self._id = data.get('_id', None)
self._openid = data['openid']
self._input = data['input']
self._output = PadOutput(data['output'])
self._title = data['title']
self._mode = data['mode']
self._public = data['public']
self._ctime = data['ctime']
self._mtime = data.get('mtime', None)
self._readonly = True
class Pad(object):
def __init__(self, data):
"""
The Python constructor. You should use :meth:`make` or
:meth:`lookup` to construct instances.
"""
self._id = data.get('_id', None)
self._openid = data['openid']
self._input = data['input']
self._output = PadOutput(data['output'])
self._title = data['title']
self._mode = data['mode']
self._public = data['public']
self._ctime = data['ctime']
self._mtime = data.get('mtime', None)
self._readonly = True
def save(self):
if self._readonly:
raise PadWriteException('Cannot save, Pad is read only.')
self._mtime = datetime.utcnow()
self._title = self._guess_title()
pad = {'openid' : self._openid,
'input' : self._input,
'output' : self._output.to_dict(),
'title' : self._title,
'mode' : self._mode,
'public' : self._public,
'ctime' : self._ctime,
'mtime' : self._mtime }
db = Pad.get_database()
if self._id is None:
self._id = db.insert(pad)
else:
criterion = {'_id' : self._id}
db.update(criterion, pad)
def erase(self):
if self._readonly:
raise PadWriteException('Cannot erase, Pad is read only.')
if self._id is None:
return
db = Pad.get_database()
db.remove({'_id' : self._id})
@staticmethod
def make(openid, pad_input=None, pad_output=None,
title='Untitled', mode='sage', public=True):
"""
Construct a new pad
"""
if not isinstance(openid, basestring):
openid = openid.get_id()
if pad_input is None:
global default_input
pad_input = default_input
if pad_output is None:
pad_output = PadOutput()
pad = Pad({'openid' : openid,
'input' : pad_input,
'output' : pad_output,
'title' : title,
'mode' : mode,
'public' : public,
'ctime' : datetime.utcnow()})
pad._readonly = False
pad.save()
return pad
@staticmethod
def make_id(pad_id):
"""
Construct a the pad_id from a string
"""
try:
return ObjectId(pad_id)
except InvalidId:
raise PadInvalidId('The pad_id is not valid.')
def is_default(self):
global default_input
return self._input == default_input
@staticmethod
def lookup(pad_id, user):
"""
Find the pad with given id in the database
"""
if not isinstance(pad_id, ObjectId):
pad_id = Pad.make_id(pad_id)
db = Pad.get_database()
data = db.find_one({'_id' : pad_id})
if data is None:
raise PadInvalidId('The pad ID does not exist.')
pad = Pad(data)
if not pad.viewable_by(user):
raise PadReadException('No read permission for pad')
pad._readonly = not pad.editable_by(user)
return pad
@staticmethod
def iterate(user, limit=None):
"""
Iterate over the pads with given id in the database
"""
db = Pad.get_database()
for data in db.find({'openid' : user.get_id()}).sort('mtime', DESCENDING):
yield Pad(data)
if limit is not None:
limit -= 1
if limit == 0:
return
@staticmethod
def get_database():
"""
Return the database connection
"""
global DATABASE
if DATABASE is None:
connection = Connection('localhost', 27017)
DATABASE = connection.sagepad['pads']
return DATABASE
@staticmethod
def max_pad_id():
"""
Return the maximum pad id
TODO: cache & increment whenever we add another pad
"""
from pymongo.code import Code
get_pad_id = Code(
"function () {"
" this.pad_id.forEach(function(z) {"
" emit(z, 1);"
" });"
"}")
find_max = Code(
"function (key, values) {"
" var maximum = 0;"
" for (var i = 0; i < values.length; i++) {"
" maximum = Math.max(maximum, values[i]);"
" }"
" return maximum;"
"}")
return Pad.get_database().map_reduce(get_pad_id, find_max)
def _guess_title(self):
"""
Guess the title from the module docstring or comment
"""
fluff = [ '#', '//', '/*', '"""', "'''" ]
found_fluff = False
for line in self.get_input().splitlines():
line.strip()
for s in fluff:
if line.startswith(s):
line = line[len(s):]
found_fluff = True
line.strip()
if line == '' or not found_fluff:
continue
return line
return 'Untitled pad'
def viewable_by(self, user):
"""
Whether the user may view the pad
"""
return True
def editable_by(self, user):
"""
Whether the user may edit the pad
"""
return self._openid == user.get_id()
def get_id(self):
"""
Returns the mongo object id
"""
return self._id
def get_id_str(self):
"""
Returns the mongo object id as string
"""
return str(self._id)
def get_ctime(self):
return self._ctime
def get_mtime(self):
return self._mtime
def pretty_mtime(self):
"""
Get a datetime object or a int() Epoch timestamp and return a
pretty string like 'an hour ago', 'Yesterday', '3 months ago',
'just now', etc
"""
time = self._mtime
now = datetime.utcnow()
diff = now - time
second_diff = diff.seconds
day_diff = diff.days
if day_diff < 0:
return 'from future?'
if day_diff == 0:
if second_diff < 10:
return "just now"
if second_diff < 60:
return str(second_diff) + " seconds ago"
if second_diff < 120:
return "a minute ago"
if second_diff < 3600:
return str( second_diff / 60 ) + " minutes ago"
if second_diff < 7200:
return "an hour ago"
if second_diff < 86400:
return str( second_diff / 3600 ) + " hours ago"
if day_diff == 1:
return "Yesterday"
if day_diff < 7:
return str(day_diff) + " days ago"
if day_diff < 31:
return str(day_diff/7) + " weeks ago"
if day_diff < 365:
return str(day_diff/30) + " months ago"
return str(day_diff/365) + " years ago"
def get_eval_mode(self):
return self._mode
def set_eval_mode(self, eval_mode):
self._mode = eval_mode
self.save()
def get_input(self):
return self._input
def set_input(self, input):
self._input = input
self._mtime = datetime.utcnow()
self.save()
def get_output(self):
return self._output
def set_output(self, output):
self._output = PadOutput(output)
self._mtime = datetime.utcnow()
self.save()
def get_title(self):
return self._title
def set_title(self, title):
self._title = title
self.save()
def set_output(self, output):
self._output = PadOutput(output)
self._mtime = datetime.utcnow()
self.save()