/usr/lib/python2.7/dist-packages/sagenb/notebook/notebook.py is in python-sagenb 1.0.1+ds1-2.
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2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 | # -*- coding: utf-8 -*
"""
The Sage Notebook
AUTHORS:
- William Stein
"""
#############################################################################
#
# Copyright (C) 2006-2009 William Stein <wstein@gmail.com>
# Distributed under the terms of the GNU General Public License (GPL)
# The full text of the GPL is available at:
# http://www.gnu.org/licenses/
#
#############################################################################
from __future__ import print_function, absolute_import
# For debugging sometimes it is handy to use only the reference implementation.
USE_REFERENCE_WORKSHEET_PROCESSES = False
# System libraries
import os
import random
import re
import shutil
import socket
import time
import bz2
from cgi import escape
try:
import cPickle as pickle
except ImportError:
import pickle
from six import iteritems
# Sage libraries
from sagenb.misc.misc import (pad_zeros, cputime, tmp_dir, load, save,
ignore_nonexistent_files, unicode_str)
# Sage Notebook
from . import css # style
from . import js # javascript
from . import worksheet # individual worksheets (which make up a notebook)
from . import config # internal configuration stuff (currently, just keycodes)
from . import keyboards # keyboard layouts
from . import server_conf # server configuration
from . import user_conf # user configuration
from . import user # users
from .template import template, prettify_time_ago
from flask_babel import gettext, lazy_gettext
try:
# sage is installed
import sage
# [(string: name, bool: optional)]
SYSTEMS = [('sage', False),
('gap', False),
('gp', False),
('html', False),
('latex', False),
('maxima', False),
('python', False),
('r', False),
('sh', False),
('singular', False),
('axiom', True),
('fricas', True),
('kash', True),
('macaulay2', True),
('magma', True),
('maple', True,),
('mathematica', True),
('matlab', True),
('mupad', True),
('octave', True),
('scilab', True)]
except ImportError:
# sage is not installed
SYSTEMS = [('sage', True)] # but gracefully degenerated version of sage mode, e.g., preparsing is trivial
# We also record the system names without (optional) since they are
# used in some of the html menus, etc.
SYSTEM_NAMES = [v[0] for v in SYSTEMS]
MATHJAX = True
JEDITABLE_TINYMCE = True
class WorksheetDict(dict):
def __init__(self, notebook, *args, **kwds):
self.notebook = notebook
self.storage = notebook._Notebook__storage
dict.__init__(self, *args, **kwds)
def __getitem__(self, item):
if item in self:
return dict.__getitem__(self, item)
try:
if '/' not in item:
raise KeyError(item)
except TypeError:
raise KeyError(item)
username, id = item.split('/')
try:
id=int(id)
except ValueError:
raise KeyError(item)
try:
worksheet = self.storage.load_worksheet(username, id)
except ValueError:
raise KeyError(item)
dict.__setitem__(self, item, worksheet)
return worksheet
class Notebook(object):
HISTORY_MAX_OUTPUT = 92*5
HISTORY_NCOLS = 90
def __init__(self, dir, user_manager = None):
if isinstance(dir, basestring) and len(dir) > 0 and dir[-1] == "/":
dir = dir[:-1]
if not dir.endswith('.sagenb'):
raise ValueError("dir (=%s) must end with '.sagenb'" % dir)
self._dir = dir
# For now we only support the FilesystemDatastore storage
# backend.
from sagenb.storage import FilesystemDatastore
S = FilesystemDatastore(dir)
self.__storage = S
# Now set the configuration, loaded from the datastore.
try:
self.__conf = S.load_server_conf()
except IOError:
# Worksheet has never been saved before, so the server conf doesn't exist.
self.__worksheets = WorksheetDict(self)
from sagenb.notebook.user_manager import SimpleUserManager, OpenIDUserManager
self._user_manager = OpenIDUserManager(conf=self.conf()) if user_manager is None else user_manager
# Set up email notification logger
import logging
from sagenb.notebook.notification import logger, TwistedEmailHandler
logger.addHandler(TwistedEmailHandler(self.conf(), logging.ERROR))
# also log to stderr
logger.addHandler(logging.StreamHandler())
# Set the list of users
try:
S.load_users(self._user_manager)
except IOError:
pass
# Set the list of worksheets
W = WorksheetDict(self)
self.__worksheets = W
# Store / Refresh public worksheets
for id_number in os.listdir(self.__storage._abspath(self.__storage._user_path("pub"))):
if id_number.isdigit():
a = "pub/"+str(id_number)
if a not in self.__worksheets:
try:
self.__worksheets[a] = self.__storage.load_worksheet("pub",int(id_number))
except Exception:
import traceback
print("Warning: problem loading %s/%s: %s" % ("pub", int(id_number), traceback.format_exc()))
# Set the openid-user dict
try:
self._user_manager.load(S)
except IOError:
pass
def delete(self):
"""
Delete all files related to this notebook.
This is used for doctesting mainly. This command is obviously
*VERY* dangerous to use on a notebook you actually care about.
You could easily lose all data.
EXAMPLES::
sage: tmp = tmp_dir(ext='.sagenb')
sage: nb = sagenb.notebook.notebook.Notebook(tmp)
sage: sorted(os.listdir(tmp))
['home']
sage: nb.delete()
Now the directory is gone.::
sage: os.listdir(tmp)
Traceback (most recent call last):
...
OSError: [Errno 2] No such file or directory: '...
"""
self.__storage.delete()
def systems(self, username=None):
systems = []
for system in SYSTEMS:
if system[1]:
systems.append(system[0] + ' (' + lazy_gettext('optional') + ')')
else:
systems.append(system[0])
return systems
def system_names(self):
return SYSTEM_NAMES
def user_manager(self):
"""
Returns self's UserManager object.
EXAMPLES::
sage: n = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: n.user_manager()
<sagenb.notebook.user_manager.OpenIDUserManager object at 0x...>
"""
return self._user_manager
##########################################################
# Users
##########################################################
def create_default_users(self, passwd):
"""
Create the default users for a notebook.
INPUT:
- ``passwd`` - a string
EXAMPLES::
sage: from six import iteritems
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: sorted(list(iteritems(nb.user_manager().users())))
[('_sage_', _sage_), ('admin', admin), ('guest', guest), ('pub', pub)]
sage: sorted(list(iteritems(nb.user_manager().passwords()))) #random
[('_sage_', ''), ('admin', ''), ('guest', ''), ('pub', '')]
sage: nb.create_default_users('newpassword')
WARNING: User 'pub' already exists -- and is now being replaced.
WARNING: User '_sage_' already exists -- and is now being replaced.
WARNING: User 'guest' already exists -- and is now being replaced.
WARNING: User 'admin' already exists -- and is now being replaced.
sage: sorted(list(iteritems(nb.user_manager().passwords()))) #random
[('_sage_', ''), ('admin', ''), ('guest', ''), ('pub', '')]
sage: len(list(iteritems(nb.user_manager().passwords())))
4
"""
self.user_manager().create_default_users(passwd)
def user(self, username):
"""
Return an instance of the User class given the ``username`` of a user
in a notebook.
INPUT:
- ``username`` - a string
OUTPUT:
- an instance of User
EXAMPLES::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.user_manager().create_default_users('password')
sage: nb.user('admin')
admin
sage: nb.user('admin').get_email()
''
sage: nb.user('admin').password() #random
'256$7998210096323979f76e9fedaf1f85bda1561c479ae732f9c1f1abab1291b0b9$373f16b9d5fab80b9a9012af26a6b2d52d92b6d4b64c1836562cbd4264a6e704'
"""
return self.user_manager().user(username)
def valid_login_names(self):
"""
Return a list of users that can log in.
OUTPUT:
- a list of strings
EXAMPLES::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: nb.valid_login_names()
['admin']
sage: nb.user_manager().add_user('Mark', 'password', '', force=True)
sage: nb.user_manager().add_user('Sarah', 'password', '', force=True)
sage: nb.user_manager().add_user('David', 'password', '', force=True)
sage: sorted(nb.valid_login_names())
['David', 'Mark', 'Sarah', 'admin']
"""
return self.user_manager().valid_login_names()
def readonly_user(self, username):
"""
Returns True if the user is supposed to only be a read-only user.
"""
return self.__storage.readonly_user(username)
##########################################################
# Publishing worksheets
##########################################################
def _initialize_worksheet(self, src, W):
r"""
Initialize a new worksheet from a source worksheet.
INPUT:
- ``src`` - a Worksheet instance; the source
- ``W`` - a new Worksheet instance; the target
"""
# Note: Each Worksheet method *_directory actually creates a
# directory, if it doesn't already exist.
# More compact, but significantly less efficient?
# shutil.rmtree(W.cells_directory(), ignore_errors=True)
# shutil.rmtree(W.data_directory(), ignore_errors=True)
# shutil.rmtree(W.snapshots_directory(), ignore_errors=True)
# shutil.copytree(src.cells_directory(), W.cells_directory())
# shutil.copytree(src.data_directory(), W.data_directory())
for sub in ['cells', 'data', 'snapshots']:
target_dir = os.path.join(W.directory(), sub)
if os.path.exists(target_dir):
shutil.rmtree(target_dir, ignore_errors=True)
# Copy images, data files, etc.
for sub in ['cells', 'data']:
source_dir = os.path.join(src.directory(), sub)
if os.path.exists(source_dir):
target_dir = os.path.join(W.directory(), sub)
shutil.copytree(source_dir, target_dir)
W.edit_save(src.edit_text())
W.save()
def pub_worksheets(self):
path = self.__storage._abspath(self.__storage._user_path("pub"))
v = []
a = ""
for id_number in os.listdir(path):
if id_number.isdigit():
a = "pub"+"/"+id_number
if a in self.__worksheets:
v.append(self.__worksheets[a])
else:
try:
self.__worksheets[a] = self.__storage.load_worksheet("pub", int(id_number))
v.append(self.__worksheets[a])
except Exception:
import traceback
print("Warning: problem loading %s/%s: %s" % ("pub", id_number, traceback.format_exc()))
return v
def users_worksheets(self, username):
r"""
Returns all worksheets owned by `username`
"""
if username == "pub":
return self.pub_worksheets()
worksheets = self.__storage.worksheets(username)
# if a worksheet has already been loaded in self.__worksheets, return
# that instead since worksheets that are already running should be
# noted as such
return [self.__worksheets[w.filename()] if w.filename() in self.__worksheets else w for w in worksheets]
def users_worksheets_view(self, username):
r"""
Returns all worksheets viewable by `username`
"""
# Should return worksheets from self.__worksheets if possible
worksheets = self.users_worksheets(username)
user=self.user_manager().user(username)
viewable_worksheets=[self.__storage.load_worksheet(owner, id) for owner,id in user.viewable_worksheets()]
# we double-check that we can actually view these worksheets
# just in case someone forgets to update the map
worksheets.extend([w for w in viewable_worksheets if w.is_viewer(username)])
# if a worksheet has already been loaded in self.__worksheets, return that instead
# since worksheets that are already running should be noted as such
return [self.__worksheets[w.filename()] if w.filename() in self.__worksheets else w for w in worksheets]
def publish_worksheet(self, worksheet, username):
r"""
Publish a user's worksheet. This creates a new worksheet in
the 'pub' directory with the same contents as ``worksheet``.
INPUT:
- ``worksheet`` - an instance of Worksheet
- ``username`` - a string
OUTPUT:
- a new or existing published instance of Worksheet
EXAMPLES::
sage: nb = sagenb.notebook.notebook.load_notebook(tmp_dir(ext='.sagenb'))
sage: nb.user_manager().add_user('Mark','password','',force=True)
sage: W = nb.new_worksheet_with_title_from_text('First steps', owner='Mark')
sage: nb.worksheet_names()
['Mark/0']
sage: nb.create_default_users('password')
sage: nb.publish_worksheet(nb.get_worksheet_with_filename('Mark/0'), 'Mark')
pub/0: [Cell 1: in=, out=]
sage: sorted(nb.worksheet_names())
['Mark/0', 'pub/0']
"""
W = None
# Reuse an existing published version
for X in self.get_worksheets_with_owner('pub'):
if (X.worksheet_that_was_published() == worksheet):
W = X
# Or create a new one.
if W is None:
W = self.create_new_worksheet(worksheet.name(), 'pub')
# Copy cells, output, data, etc.
self._initialize_worksheet(worksheet, W)
# Update metadata.
W.set_worksheet_that_was_published(worksheet)
W.move_to_archive(username)
worksheet.set_published_version(W.filename())
W.record_edit(username)
W.set_name(worksheet.name())
self.__worksheets[W.filename()] = W
W.save()
return W
##########################################################
# Moving, copying, creating, renaming, and listing worksheets
##########################################################
def scratch_worksheet(self):
try:
return self.__scratch_worksheet
except AttributeError:
W = self.create_new_worksheet('scratch', '_sage_')
self.__scratch_worksheet = W
return W
def create_new_worksheet(self, worksheet_name, username):
if username!='pub' and self.user_manager().user_is_guest(username):
raise ValueError("guests cannot create new worksheets")
W = self.worksheet(username)
W.set_system(self.system(username))
W.set_name(worksheet_name)
self.save_worksheet(W)
self.__worksheets[W.filename()] = W
return W
def copy_worksheet(self, ws, owner):
W = self.create_new_worksheet('default', owner)
self._initialize_worksheet(ws, W)
name = "Copy of %s" % ws.name()
W.set_name(name)
return W
def delete_worksheet(self, filename):
"""
Delete the given worksheet and remove its name from the worksheet
list. Raise a KeyError, if it is missing.
INPUT:
- ``filename`` - a string
"""
try:
W = self.__worksheets[filename]
except KeyError:
raise KeyError("Attempt to delete missing worksheet '%s'" % filename)
W.quit()
shutil.rmtree(W.directory(), ignore_errors=False)
self.deleted_worksheets()[filename] = W
def deleted_worksheets(self):
try:
return self.__deleted_worksheets
except AttributeError:
self.__deleted_worksheets = {}
return self.__deleted_worksheets
def empty_trash(self, username):
"""
Empty the trash for the given user.
INPUT:
- ``username`` - a string
This empties the trash for the given user and cleans up all files
associated with the worksheets that are in the trash.
EXAMPLES::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.user_manager().add_user('sage','sage','sage@sagemath.org',force=True)
sage: W = nb.new_worksheet_with_title_from_text('Sage', owner='sage')
sage: W._notebook = nb
sage: W.move_to_trash('sage')
sage: nb.worksheet_names()
['sage/0']
sage: nb.empty_trash('sage')
sage: nb.worksheet_names()
[]
"""
X = self.get_worksheets_with_viewer(username)
X = [W for W in X if W.is_trashed(username)]
for W in X:
W.delete_user(username)
if W.owner() is None:
self.delete_worksheet(W.filename())
def worksheet_names(self):
"""
Return a list of all the names of worksheets in this notebook.
OUTPUT:
- a list of strings.
EXAMPLES:
We make a new notebook with two users and two worksheets,
then list their names::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.user_manager().add_user('sage','sage','sage@sagemath.org',force=True)
sage: W = nb.new_worksheet_with_title_from_text('Sage', owner='sage')
sage: nb.user_manager().add_user('wstein','sage','wstein@sagemath.org',force=True)
sage: W2 = nb.new_worksheet_with_title_from_text('Elliptic Curves', owner='wstein')
sage: nb.worksheet_names()
['sage/0', 'wstein/0']
"""
W = self.__worksheets.keys()
W.sort()
return W
##########################################################
# Information about the pool of worksheet compute servers
##########################################################
def server_pool(self):
return self.conf()['server_pool']
def set_server_pool(self, servers):
self.conf()['server_pool'] = servers
def get_ulimit(self):
try:
return self.__ulimit
except AttributeError:
self.__ulimit = ''
return ''
def set_ulimit(self, ulimit):
self.__ulimit = ulimit
def get_server(self):
P = self.server_pool()
if P is None or len(P) == 0:
return None
try:
self.__server_number = (self.__server_number + 1) % len(P)
i = self.__server_number
except AttributeError:
self.__server_number = 0
i = 0
return P[i]
def new_worksheet_process(self):
"""
Return a new worksheet process object with parameters determined by
configuration of this notebook server.
"""
from sagenb.interfaces import (WorksheetProcess_ExpectImplementation,
WorksheetProcess_ReferenceImplementation,
WorksheetProcess_RemoteExpectImplementation)
if USE_REFERENCE_WORKSHEET_PROCESSES:
return WorksheetProcess_ReferenceImplementation()
ulimit = self.get_ulimit()
from sagenb.interfaces import ProcessLimits
# We have to parse the ulimit format to our ProcessLimits.
# The typical format is.
# '-u 400 -v 1000000 -t 3600'
# Despite -t being cputime for ulimit, we map it to walltime,
# since that is the only thing that really makes sense for a
# notebook server.
# -u --> max_processes
# -v --> max_vmem (but we divide by 1000)
# -t -- > max_walltime
max_vmem = max_cputime = max_walltime = None
tbl = {'v': None, 'u': None, 't': None}
for x in ulimit.split('-'):
for k in tbl.keys():
if x.startswith(k):
tbl[k] = int(x.split()[1].strip())
if tbl['v'] is not None:
tbl['v'] = tbl['v'] / 1000.0
process_limits = ProcessLimits(max_vmem=tbl['v'], max_walltime=tbl['t'],
max_processes=tbl['u'])
server_pool = self.server_pool()
if not server_pool or len(server_pool) == 0:
return WorksheetProcess_ExpectImplementation(process_limits=process_limits)
else:
import random
user_at_host = random.choice(server_pool)
return WorksheetProcess_RemoteExpectImplementation(user_at_host=user_at_host,
process_limits=process_limits,
remote_python='python')
def _python_command(self):
"""
"""
try:
return self.__python_command
except AttributeError:
pass
##########################################################
# Configuration settings.
##########################################################
def system(self, username=None):
"""
The default math software system for new worksheets for a
given user or the whole notebook (if username is None).
"""
return self.user(username).conf()['default_system']
def pretty_print(self, username=None):
"""
The default typeset setting for new worksheets for
a given user or the whole notebook (if username is None).
TODO -- only implemented for the notebook right now
"""
return self.user(username).conf()['default_pretty_print']
def set_pretty_print(self, pretty_print):
self.__pretty_print = pretty_print
def color(self):
"""
The default color scheme for the notebook.
"""
try:
return self.__color
except AttributeError:
self.__color = 'default'
return self.__color
def set_color(self, color):
self.__color = color
##########################################################
# The notebook history.
##########################################################
def user_history(self, username):
if not hasattr(self, '_user_history'):
self._user_history = {}
if username in self._user_history:
return self._user_history[username]
history = []
for hunk in self.__storage.load_user_history(username):
hunk = unicode_str(hunk)
history.append(hunk)
self._user_history[username] = history
return history
def create_new_worksheet_from_history(self, name, username, maxlen=None):
W = self.create_new_worksheet(name, username)
W.edit_save('Log Worksheet\n' + self.user_history_text(username, maxlen=None))
return W
def user_history_text(self, username, maxlen=None):
history = self.user_history(username)
if maxlen:
history = history[-maxlen:]
return '\n\n'.join([hunk.strip() for hunk in history])
def add_to_user_history(self, entry, username):
history = self.user_history(username)
history.append(entry)
maxlen = self.user_manager().user_conf(username)['max_history_length']
while len(history) > maxlen:
del history[0]
##########################################################
# Importing and exporting worksheets to files
##########################################################
def export_worksheet(self, worksheet_filename, output_filename, title=None):
"""
Export a worksheet, creating a sws file on the file system.
INPUT:
- ``worksheet_filename`` - a string e.g., 'username/id_number'
- ``output_filename`` - a string, e.g., 'worksheet.sws'
- ``title`` - title to use for the exported worksheet (if
None, just use current title)
"""
S = self.__storage
W = self.get_worksheet_with_filename(worksheet_filename)
S.save_worksheet(W)
username = W.owner()
id_number = W.id_number()
S.export_worksheet(username, id_number, output_filename, title=title)
def worksheet(self, username, id_number=None):
"""
Create a new worksheet with given id_number belonging to the
user with given username, or return an already existing
worksheet. If id_number is None, creates a new worksheet
using the next available new id_number for the given user.
INPUT:
- ``username`` -- string
- ``id_number`` - nonnegative integer or None (default)
"""
S = self.__storage
if id_number is None:
id_number = self.new_id_number(username)
try:
W = S.load_worksheet(username, id_number)
except ValueError:
W = S.create_worksheet(username, id_number)
self.__worksheets[W.filename()] = W
return W
def new_id_number(self, username):
"""
Find the next worksheet id for the given user.
"""
u = self.user(username).conf()
id_number = u['next_worksheet_id_number']
if id_number == -1: # need to initialize
id_number = max([w.id_number() for w in self.worksheet_list_for_user(username)] + [-1]) + 1
u['next_worksheet_id_number'] = id_number + 1
return id_number
def new_worksheet_with_title_from_text(self, text, owner):
name, _ = worksheet.extract_name(text)
W = self.create_new_worksheet(name, owner)
return W
def change_worksheet_key(self, old_key, new_key):
ws = self.__worksheets
W = ws[old_key]
ws[new_key] = W
del ws[old_key]
def import_worksheet(self, filename, owner):
r"""
Import a worksheet with the given ``filename`` and set its
``owner``. If the file extension is not recognized, raise a
ValueError.
INPUT:
- ``filename`` - a string
- ``owner`` - a string
OUTPUT:
- ``worksheet`` - a newly created Worksheet instance
EXAMPLES:
We create a notebook and import a plain text worksheet
into it.
::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: name = tmp_filename() + '.txt'
sage: open(name,'w').write('foo\n{{{\n2+3\n}}}')
sage: W = nb.import_worksheet(name, 'admin')
W is our newly-created worksheet, with the 2+3 cell in it::
sage: W.name()
u'foo'
sage: W.cell_list()
[TextCell 0: foo, Cell 1: in=2+3, out=]
"""
if not os.path.exists(filename):
raise ValueError("no file %s" % filename)
# Figure out the file extension
ext = os.path.splitext(filename)[1]
if ext.lower() == '.txt':
# A plain text file with {{{'s that defines a worksheet (no graphics).
W = self._import_worksheet_txt(filename, owner)
elif ext.lower() == '.sws':
# An sws file (really a tar.bz2) which defines a worksheet with graphics, etc.
W = self._import_worksheet_sws(filename, owner)
elif ext.lower() == '.html':
# An html file, which should contain the static version of
# a sage help page, as generated by Sphinx
html = open(filename).read()
cell_pattern = r"""{{{id=.*?///.*?}}}"""
docutils_pattern = r"""<meta name="generator" content="Docutils \S+: http://docutils\.sourceforge\.net/" />"""
sphinx_pattern = r"""Created using <a href="http://sphinx\.pocoo\.org/">Sphinx</a>"""
if re.search(cell_pattern, html, re.DOTALL) is not None:
W = self._import_worksheet_txt(filename, owner)
elif re.search(docutils_pattern, html) is not None:
W = self._import_worksheet_docutils_html(filename, owner)
elif re.search(sphinx_pattern, html) is not None:
W = self._import_worksheet_html(filename, owner)
else:
# Unrecognized html file
# We do the default behavior, i.e. we import as if it was generated
# by Sphinx web page
W = self._import_worksheet_html(filename, owner)
elif ext.lower() == '.rst':
# A ReStructuredText file
W = self._import_worksheet_rst(filename, owner)
else:
# We only support txt, sws, html and rst files
raise ValueError("unknown extension '%s'" % ext)
self.__worksheets[W.filename()] = W
return W
def _import_worksheet_txt(self, filename, owner):
r"""
Import a plain text file as a new worksheet.
INPUT:
- ``filename`` - a string; a filename that ends in .txt
- ``owner`` - a string; the imported worksheet's owner
OUTPUT:
- a new instance of Worksheet
EXAMPLES:
We write a plain text worksheet to a file and import it
using this function.::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: name = tmp_filename() + '.txt'
sage: open(name,'w').write('foo\n{{{\na = 10\n}}}')
sage: W = nb._import_worksheet_txt(name, 'admin'); W
admin/0: [TextCell 0: foo, Cell 1: in=a = 10, out=]
"""
# Open the worksheet txt file and load it in.
worksheet_txt = open(filename).read()
# Create a new worksheet with the right title and owner.
worksheet = self.new_worksheet_with_title_from_text(worksheet_txt, owner)
# Set the new worksheet to have the contents specified by that file.
worksheet.edit_save(worksheet_txt)
return worksheet
def _import_worksheet_sws(self, filename, username):
r"""
Import an sws format worksheet into this notebook as a new
worksheet.
INPUT:
- ``filename`` - a string; a filename that ends in .sws;
internally it must be a tar'd bz2'd file.
- ``username`` - a string
OUTPUT:
- a new Worksheet instance
EXAMPLES:
We create a notebook, then make a worksheet from a plain text
file first.::
sage: nb = sagenb.notebook.notebook.load_notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: name = tmp_filename() + '.txt'
sage: open(name,'w').write('{{{id=0\n2+3\n}}}')
sage: W = nb.import_worksheet(name, 'admin')
sage: W.filename()
'admin/0'
sage: sorted([w.filename() for w in nb.get_all_worksheets()])
['admin/0']
We then export the worksheet to an sws file.::
sage: sws = os.path.join(tmp_dir(), 'tmp.sws')
sage: nb.export_worksheet(W.filename(), sws)
Now we import the sws.::
sage: W = nb._import_worksheet_sws(sws, 'admin')
sage: nb._Notebook__worksheets[W.filename()] = W
Yes, it's there now (as a new worksheet)::
sage: sorted([w.filename() for w in nb.get_all_worksheets()])
['admin/0', 'admin/1']
"""
id_number = self.new_id_number(username)
worksheet = self.__storage.import_worksheet(username, id_number, filename)
# I'm not at all convinced this is a good idea, since we
# support multiple worksheets with the same title very well
# already. So it's commented out.
# self.change_worksheet_name_to_avoid_collision(worksheet)
return worksheet
def _import_worksheet_html(self, filename, owner):
r"""
Import a static html help page generated by Sphinx as a new
worksheet.
INPUT:
- ``filename`` - a string; a filename that ends in .html
- ``owner`` - a string; the imported worksheet's owner
OUTPUT:
- a new instance of Worksheet
EXAMPLES:
We write a plain text worksheet to a file and import it
using this function.::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: name = tmp_filename() + '.html'
sage: fd = open(name,'w')
sage: fd.write(''.join([
....: '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"\n',
....: ' "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">\n',
....: '\n',
....: '<html xmlns="http://www.w3.org/1999/xhtml">\n',
....: ' <head>\n',
....: ' <title>Test notebook — test</title>\n',
....: ' </head>\n',
....: ' <body>\n',
....: ' <div class="document">\n',
....: ' <div class="documentwrapper">\n',
....: ' <div class="bodywrapper">\n',
....: ' <div class="body">\n',
....: '<p>Here are some computations:</p>\n',
....: '\n',
....: '<div class="highlight-python"><div class="highlight"><pre>\n',
....: '<span class="gp">sage',
....: ': </span><span class="mi">1</span><span class="o">+</span><span class="mi">1</span>\n',
....: '<span class="go">2</span>\n',
....: '</pre></div></div>\n',
....: '\n',
....: '</div></div></div></div>\n',
....: '</body></html>']))
sage: fd.close()
sage: W = nb._import_worksheet_html(name, 'admin')
sage: W.name()
u'Test notebook -- test'
sage: W.owner()
'admin'
sage: W.cell_list()
[TextCell 1: <div class="document">
<div class="documentwrapper">
<div class="bodywrapper">
<div class="body">
<p>Here are some computations:</p>
<BLANKLINE>
<div class="highlight-python">, Cell 0: in=1+1, out=
2, TextCell 2: </div>
<BLANKLINE>
</div></div></div></div>]
sage: cell = W.cell_list()[1]
sage: cell.input_text()
u'1+1'
sage: cell.output_text()
u'<pre class="shrunk">2</pre>'
"""
# Inspired from sagenb.notebook.twist.WorksheetFile.render
doc_page_html = open(filename).read()
from .docHTMLProcessor import SphinxHTMLProcessor
# FIXME: does SphinxHTMLProcessor raise an appropriate message
# if the html file does not contain a Sphinx HTML page?
doc_page = SphinxHTMLProcessor().process_doc_html(doc_page_html)
from .misc import extract_title
title = extract_title(doc_page_html).replace('—','--')
worksheet = self.create_new_worksheet(title, owner)
worksheet.edit_save(doc_page)
# FIXME: An extra compute cell is always added to the end.
# Pop it off.
cells = worksheet.cell_list()
cells.pop()
return worksheet
def _import_worksheet_rst(self, filename, owner):
r"""
Import a ReStructuredText file as a new worksheet.
INPUT:
- ``filename`` - a string; a filename that ends in .rst
- ``owner`` - a string; the imported worksheet's owner
OUTPUT:
- a new instance of Worksheet
EXAMPLES:
sage: sprompt = 'sage' + ':'
sage: rst = '\n'.join(['=============',
....: 'Test Notebook',
....: '=============',
....: '',
....: 'Let\'s do some computations::',
....: '',
....: ' %s 2+2' % sprompt,
....: ' 4',
....: '',
....: '::',
....: '',
....: ' %s x^2' % sprompt,
....: ' x^2'])
sage: name = tmp_filename() + '.rst'
sage: fd = open(name,'w')
sage: fd.write(rst)
sage: fd.close()
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: W = nb._import_worksheet_rst(name, 'admin')
sage: W.name()
u'Test Notebook'
sage: W.owner()
'admin'
sage: W.cell_list()
[TextCell 2: <h1 class="title">Test Notebook</h1>
<BLANKLINE>
<p>Let's do some computations:</p>, Cell 0: in=2+2, out=
4, Cell 1: in=x^2, out=
x^2]
sage: cell = W.cell_list()[1]
sage: cell.input_text()
u'2+2'
sage: cell.output_text()
u'<pre class="shrunk">4</pre>'
"""
rst = open(filename).read()
# docutils removes the backslashes if they are not escaped This is
# not practical because backslashes are almost never escaped in
# Sage docstrings written in ReST. So if the user wants the
# backslashes to be escaped automatically, he adds the comment
# ".. escape-backslashes" in the input file
if re.search(r'^\.\.[ \t]+escape-backslashes', rst, re.MULTILINE) is not None:
rst = rst.replace('\\','\\\\')
# Do the translation rst -> html (using docutils)
from docutils.core import publish_parts
D = publish_parts(rst, writer_name='html')
title = D['title']
html = D['whole']
# Do the translation html -> txt
from .docHTMLProcessor import docutilsHTMLProcessor
translator = docutilsHTMLProcessor()
worksheet_txt = translator.process_doc_html(html)
# Create worksheet
worksheet = self.create_new_worksheet(title, owner)
worksheet.edit_save(worksheet_txt)
return worksheet
def _import_worksheet_docutils_html(self, filename, owner):
r"""
Import a static html help page generated by docutils as a new
worksheet.
INPUT:
- ``filename`` - a string; a filename that ends in .html
- ``owner`` - a string; the imported worksheet's owner
OUTPUT:
- a new instance of Worksheet
EXAMPLES:
sage: sprompt = 'sage' + ':'
sage: rst = '\n'.join(['=============',
....: 'Test Notebook',
....: '=============',
....: '',
....: 'Let\'s do some computations::',
....: '',
....: ' %s 2+2' % sprompt,
....: ' 4',
....: '',
....: '::',
....: '',
....: ' %s x^2' % sprompt,
....: ' x^2'])
sage: from docutils.core import publish_string
sage: html = publish_string(rst, writer_name='html')
sage: name = tmp_filename() + '.html'
sage: fd = open(name,'w')
sage: fd.write(html)
sage: fd.close()
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: W = nb._import_worksheet_docutils_html(name, 'admin')
sage: W.name()
u'Test Notebook'
sage: W.owner()
'admin'
sage: W.cell_list()
[TextCell 2: <h1 class="title">Test Notebook</h1>
<BLANKLINE>
<p>Let's do some computations:</p>, Cell 0: in=2+2, out=
4, Cell 1: in=x^2, out=
x^2]
sage: cell = W.cell_list()[1]
sage: cell.input_text()
u'2+2'
sage: cell.output_text()
u'<pre class="shrunk">4</pre>'
"""
html = open(filename).read()
# Do the translation html -> txt
from .docHTMLProcessor import docutilsHTMLProcessor
translator = docutilsHTMLProcessor()
worksheet_txt = translator.process_doc_html(html)
# Extract title
from .worksheet import extract_name
title, _ = extract_name(worksheet_txt)
if title.startswith('<h1 class="title">'):
title = title[18:]
if title.endswith('</h1>'):
title = title[:-5]
# Create worksheet
worksheet = self.create_new_worksheet(title, owner)
worksheet.edit_save(worksheet_txt)
return worksheet
def change_worksheet_name_to_avoid_collision(self, worksheet):
"""
Change the display name of the worksheet if there is already a
worksheet with the same name as this one.
"""
name = worksheet.name()
display_names = [w.name() for w in self.get_worksheets_with_owner(worksheet.owner())]
if name in display_names:
j = name.rfind('(')
if j != -1:
name = name[:j].rstrip()
i = 2
while name + " (%s)" % i in display_names:
i += 1
name = name + " (%s)" % i
worksheet.set_name(name)
##########################################################
# Server configuration
##########################################################
def conf(self):
try:
return self.__conf
except AttributeError:
C = server_conf.ServerConfiguration()
# if we are newly creating a notebook, then we want to
# have a default model version of 1, currently
# we can't just set the default value in server_conf.py
# to 1 since it would then be 1 for notebooks without the
# model_version property
# TODO: distinguish between a new server config default values
# and default values for missing properties
C['model_version']=1
self.__conf = C
return C
##########################################################
# Computing control
##########################################################
def set_not_computing(self):
# unpickled, no worksheets will think they are
# being computed, since they clearly aren't (since
# the server just started).
for W in self.__worksheets.values():
W.set_not_computing()
def quit(self):
for W in self.__worksheets.values():
W.quit()
def update_worksheet_processes(self):
worksheet.update_worksheets()
def quit_idle_worksheet_processes(self):
timeout = self.conf()['idle_timeout']
doc_timeout = self.conf()['doc_timeout']
for W in self.__worksheets.values():
if W.compute_process_has_been_started():
if W.docbrowser():
W.quit_if_idle(doc_timeout)
else:
W.quit_if_idle(timeout)
def quit_worksheet(self, W):
try:
del self.__worksheets[W.filename()]
except KeyError:
pass
##########################################################
# Worksheet HTML generation
##########################################################
def worksheet_list_for_public(self, username, sort='last_edited', reverse=False, search=None):
W = self.users_worksheets('pub')
if search:
W = [x for x in W if x.satisfies_search(search)]
sort_worksheet_list(W, sort, reverse) # changed W in place
return W
def worksheet_list_for_user(self, user, typ="active", sort='last_edited', reverse=False, search=None):
X = self.get_worksheets_with_viewer(user)
if typ == "trash":
W = [x for x in X if x.is_trashed(user)]
elif typ == "active":
W = [x for x in X if x.is_active(user)]
else: # typ must be archived
W = [x for x in X if not (x.is_trashed(user) or x.is_active(user))]
if search:
W = [x for x in W if x.satisfies_search(search)]
sort_worksheet_list(W, sort, reverse) # changed W in place
return W
##########################################################
# Revision history for a worksheet
##########################################################
def html_worksheet_revision_list(self, username, worksheet):
r"""
Return HTML for the revision list of a worksheet.
INPUT:
- ``username`` - a string
- ``worksheet`` - an instance of Worksheet
OUTPUT:
- a string - the HTML for the revision list
EXAMPLES::
sage: from sagenb.flask_version import base # random output -- depends on warnings issued by other sage packages
sage: app = base.create_app(tmp_dir(ext='.sagenb'))
sage: ctx = app.app_context()
sage: ctx.push()
sage: nb = base.notebook
sage: nb.create_default_users('password')
sage: W = nb.create_new_worksheet('Test', 'admin')
sage: W.body()
u'\n\n{{{id=1|\n\n///\n}}}'
sage: W.save_snapshot('admin')
sage: nb.html_worksheet_revision_list('admin', W)
u'...Revision...Last Edited...ago...'
"""
data = worksheet.snapshot_data() # pairs ('how long ago', key)
return template(os.path.join("html", "notebook", "worksheet_revision_list.html"),
data = data, worksheet = worksheet,
notebook = self,
username = username)
def html_specific_revision(self, username, ws, rev):
r"""
Return the HTML for a specific revision of a worksheet.
INPUT:
- ``username`` - a string
- ``ws`` - an instance of Worksheet
- ``rev`` - a string containing the key of the revision
OUTPUT:
- a string - the revision rendered as HTML
"""
t = time.time() - float(rev[:-4])
time_ago = prettify_time_ago(t)
filename = ws.get_snapshot_text_filename(rev)
txt = bz2.decompress(open(filename).read())
W = self.scratch_worksheet()
W.set_name('Revision of ' + ws.name())
W.delete_cells_directory()
W.edit_save(txt)
data = ws.snapshot_data() # pairs ('how long ago', key)
prev_rev = None
next_rev = None
for i in range(len(data)):
if data[i][1] == rev:
if i > 0:
prev_rev = data[i - 1][1]
if i < len(data)-1:
next_rev = data[i + 1][1]
break
return template(os.path.join("html", "notebook",
"specific_revision.html"),
worksheet = W, # the revision, not the original!
username = username, rev = rev, prev_rev = prev_rev,
next_rev = next_rev, time_ago = time_ago)
def html_share(self, worksheet, username):
r"""
Return the HTML for the "share" page of a worksheet.
INPUT:
- ``username`` - a string
- ``worksheet`` - an instance of Worksheet
OUTPUT:
- string - the share page's HTML representation
EXAMPLES::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: W = nb.create_new_worksheet('Test', 'admin')
sage: nb.html_share(W, 'admin')
u'...currently shared...add or remove collaborators...'
"""
return template(os.path.join("html", "notebook", "worksheet_share.html"),
worksheet = worksheet,
notebook = self,
username = username)
def html_download_or_delete_datafile(self, ws, username, filename):
r"""
Return the HTML for the download or delete datafile page.
INPUT:
- ``username`` - a string
- ``ws`` - an instance of Worksheet
- ``filename`` - a string; the name of the file
OUTPUT:
- a string - the page rendered as HTML
EXAMPLES::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: W = nb.create_new_worksheet('Test', 'admin')
sage: nb.html_download_or_delete_datafile(W, 'admin', 'bar')
u'...Data file: bar...DATA is a special variable...uploaded...'
"""
ext = os.path.splitext(filename)[1].lower()
file_is_image, file_is_text = False, False
text_file_content = ""
if ext in ['.png', '.jpg', '.gif']:
file_is_image = True
if ext in ['.txt', '.tex', '.sage', '.spyx', '.py', '.f', '.f90', '.c']:
file_is_text = True
text_file_content = open(os.path.join(ws.data_directory(), filename)).read()
# Detect the character encoding
from BeautifulSoup import UnicodeDammit
text_file_content = UnicodeDammit(text_file_content).unicode
return template(os.path.join("html", "notebook", "download_or_delete_datafile.html"),
worksheet = ws, notebook = self,
username = username,
filename_ = filename,
file_is_image = file_is_image,
file_is_text = file_is_text,
text_file_content = text_file_content)
##########################################################
# Accessing all worksheets with certain properties.
##########################################################
def active_worksheets_for(self, username):
# TODO: check if the worksheets are active
#return [ws for ws in self.get_worksheets_with_viewer(username) if ws.is_active(username)]
return self.users_worksheets_view(username)
def get_all_worksheets(self):
"""
We should only call this if the user is admin!
"""
all_worksheets = []
for username in self._user_manager.users():
if username in ['_sage_', 'pub']:
continue
for w in self.users_worksheets(username):
all_worksheets.append(w)
return all_worksheets
def get_worksheets_with_viewer(self, username):
if self._user_manager.user_is_admin(username): return self.get_all_worksheets()
return self.users_worksheets_view(username)
def get_worksheets_with_owner(self, owner):
return self.users_worksheets(owner)
def get_worksheet_with_filename(self, filename):
"""
Get the worksheet with the given filename. If there is no
such worksheet, raise a ``KeyError``.
INPUT:
- ``filename`` - a string
OUTPUT:
- a Worksheet instance
"""
try:
return self.__worksheets[filename]
except KeyError:
raise KeyError("No worksheet with filename '%s'" % filename)
###########################################################
# Saving the whole notebook
###########################################################
def save(self):
"""
Save this notebook server to disk.
"""
S = self.__storage
S.save_users(self.user_manager().users())
S.save_server_conf(self.conf())
self._user_manager.save(S)
# Save the non-doc-browser worksheets.
for n, W in self.__worksheets.items():
if not n.startswith('doc_browser'):
S.save_worksheet(W)
if hasattr(self, '_user_history'):
for username, H in iteritems(self._user_history):
S.save_user_history(username, H)
def save_worksheet(self, W, conf_only=False):
self.__storage.save_worksheet(W, conf_only=conf_only)
def logout(self, username):
r"""
Do not do anything on logout (so far).
In particular, do **NOT** stop all ``username``'s worksheets!
"""
pass
def delete_doc_browser_worksheets(self):
for w in self.users_worksheets('_sage_'):
if w.name().startswith('doc_browser'):
self.delete_worksheet(w.filename())
###########################################################
# HTML -- generate most html related to the whole notebook page
###########################################################
def html_plain_text_window(self, worksheet, username):
r"""
Return HTML for the window that displays a plain text version
of the worksheet.
INPUT:
- ``worksheet`` - a Worksheet instance
- ``username`` - a string
OUTPUT:
- a string - the plain text window rendered as HTML
EXAMPLES::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: W = nb.create_new_worksheet('Test', 'admin')
sage: nb.html_plain_text_window(W, 'admin')
u'...pre class="plaintext"...cell_intext...textfield...'
"""
plain_text = worksheet.plain_text(prompts=True, banner=False)
plain_text = escape(plain_text).strip()
return template(os.path.join("html", "notebook", "plain_text_window.html"),
worksheet = worksheet,
notebook = self,
username = username, plain_text = plain_text,
MATHJAX = MATHJAX, JEDITABLE_TINYMCE = JEDITABLE_TINYMCE)
def html_edit_window(self, worksheet, username):
r"""
Return HTML for a window for editing ``worksheet``.
INPUT:
- ``username`` - a string containing the username
- ``worksheet`` - a Worksheet instance
OUTPUT:
- a string - the editing window's HTML representation
EXAMPLES::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: W = nb.create_new_worksheet('Test', 'admin')
sage: nb.html_edit_window(W, 'admin')
u'...textarea class="plaintextedit"...{{{id=1|...//...}}}...'
"""
return template(os.path.join("html", "notebook", "edit_window.html"),
worksheet = worksheet,
notebook = self,
username = username)
def html_beforepublish_window(self, worksheet, username):
r"""
Return HTML for the warning and decision page displayed prior
to publishing the given worksheet.
INPUT:
- ``worksheet`` - an instance of Worksheet
- ``username`` - a string
OUTPUT:
- a string - the pre-publication page rendered as HTML
EXAMPLES::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: W = nb.create_new_worksheet('Test', 'admin')
sage: nb.html_beforepublish_window(W, 'admin')
u'...want to publish this worksheet?...re-publish when changes...'
"""
msg = """You can publish your worksheet to the Internet, where anyone will be able to access and view it online.
Your worksheet will be assigned a unique address (URL) that you can send to your friends and colleagues.<br/><br/>
Do you want to publish this worksheet?<br/><br/>
<form method="get" action=".">
<input type="hidden" name="yes" value="" />
<input type="submit" value="Yes" style="margin-left:10px" />
<input type="button" value="No" style="margin-left:5px" onClick="parent.location=\'../'"><br/><br/>
<input type="checkbox" name="auto" style="margin-left:13px" /> Automatically re-publish when changes are made and saved
</form>
"""
return template(os.path.join("html", "notebook", "beforepublish_window.html"),
worksheet = worksheet,
notebook = self,
username = username)
def html_afterpublish_window(self, worksheet, username, url, dtime):
r"""
Return HTML for a given worksheet's post-publication page.
INPUT:
- ``worksheet`` - an instance of Worksheet
- ``username`` - a string
- ``url`` - a string representing the URL of the published
worksheet
- ``dtime`` - an instance of time.struct_time representing the
publishing time
OUTPUT:
- a string - the post-publication page rendered as HTML
"""
from time import strftime
time = strftime("%B %d, %Y %I:%M %p", dtime)
return template(os.path.join("html", "notebook", "afterpublish_window.html"),
worksheet = worksheet,
notebook = self,
username = username, url = url, time = time)
def html_upload_data_window(self, ws, username):
r"""
Return HTML for the "Upload Data" window.
INPUT:
- ``worksheet`` - an instance of Worksheet
- ``username`` - a string
OUTPUT:
- a string - the HTML representation of the data upload window
EXAMPLES::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: W = nb.create_new_worksheet('Test', 'admin')
sage: nb.html_upload_data_window(W, 'admin')
u'...Upload or Create Data File...Browse...url...name of a new...'
"""
return template(os.path.join("html", "notebook", "upload_data_window.html"),
worksheet = ws, username = username)
def html(self, worksheet_filename=None, username='guest', admin=False,
do_print=False):
r"""
Return the HTML for a worksheet's index page.
INPUT:
- ``worksheet_filename`` - a string (default: None)
- ``username`` - a string (default: 'guest')
- ``admin`` - a bool (default: False)
OUTPUT:
- a string - the worksheet rendered as HTML
EXAMPLES::
sage: nb = sagenb.notebook.notebook.Notebook(tmp_dir(ext='.sagenb'))
sage: nb.create_default_users('password')
sage: W = nb.create_new_worksheet('Test', 'admin')
sage: nb.html(W.filename(), 'admin')
u'...Test...cell_input...if (e.shiftKey)...state_number...'
"""
if worksheet_filename is None or worksheet_filename == '':
worksheet_filename = None
W = None
else:
try:
W = self.get_worksheet_with_filename(worksheet_filename)
except KeyError:
W = None
from flask import current_app
if W is None:
return current_app.message(gettext("The worksheet does not exist"), username=username)
if W.docbrowser() or W.is_published():
if W.is_published() or self.user_manager().user_is_guest(username):
template_page = os.path.join('html', 'notebook', 'guest_worksheet_page.html')
else:
template_page = os.path.join("html", "notebook", "doc_page.html")
elif do_print:
template_page = os.path.join('html', 'notebook', 'print_worksheet.html')
else:
template_page = os.path.join("html", "notebook", "worksheet_page.html")
return template(template_page, worksheet = W,
notebook = self, do_print=do_print,
username = username)
def upgrade_model(self):
"""
Upgrade the model, if needed.
- Version 0 (or non-existent model version, which defaults to 0): Original flask notebook
- Version 1: shared worksheet data cached in the User object
"""
model_version=self.conf()['model_version']
if model_version is None or model_version<1:
print("Upgrading model version to version 1")
# this uses code from get_all_worksheets()
user_manager = self.user_manager()
num_users=0
for username in self._user_manager.users():
num_users+=1
if num_users%1000==0:
print('Upgraded %d users' % num_users)
if username in ['_sage_', 'pub']:
continue
try:
for w in self.users_worksheets(username):
owner = w.owner()
id_number = w.id_number()
collaborators = w.collaborators()
for u in collaborators:
try:
user_manager.user(u).viewable_worksheets().add((owner, id_number))
except KeyError:
# user doesn't exist
pass
except (UnicodeEncodeError, OSError):
# Catch UnicodeEncodeError because sometimes a username has a non-ascii character
# Catch OSError since sometimes when moving user directories (which happens
# automatically when getting user's worksheets), OSError: [Errno 39] Directory not empty
# is thrown (we should be using shutil.move instead, probably)
# users with these problems won't have their sharing cached, but they will probably have
# problems logging in anyway, so they probably won't notice not having shared worksheets
import sys
import traceback
print('Error on username %s' % username.encode('utf8'),
file=sys.stderr)
print(traceback.format_exc(), file=sys.stderr)
pass
print('Done upgrading to model version 1')
self.conf()['model_version'] = 1
####################################################################
def load_notebook(dir, interface=None, port=None, secure=None, user_manager=None):
"""
Load and return a notebook from a given directory. Create a new
one in that directory, if one isn't already there.
INPUT:
- ``dir`` - a string that defines a directory name
- ``interface`` - the address of the interface the server listens at
- ``port`` - the port the server listens on
- ``secure`` - whether the notebook is secure
OUTPUT:
- a Notebook instance
"""
if not dir.endswith('.sagenb'):
if not os.path.exists(dir + '.sagenb') and os.path.exists(os.path.join(dir, 'nb.sobj')):
try:
nb = migrate_old_notebook_v1(dir)
except KeyboardInterrupt:
raise KeyboardInterrupt("Interrupted notebook migration. Delete the directory '%s' and try again." % (os.path.abspath(dir+'.sagenb')))
return nb
dir += '.sagenb'
dir = make_path_relative(dir)
nb = Notebook(dir)
nb.interface = interface
nb.port = port
nb.secure = secure
# Install this copy of the notebook in misc.py as *the*
# global notebook object used for computations. This is
# mainly to avoid circular references, etc. This also means
# only one notebook can actually be used at any point.
import sagenb.notebook.misc
sagenb.notebook.misc.notebook = nb
return nb
def migrate_old_notebook_v1(dir):
"""
Back up and migrates an old saved version of notebook to the new one (`sagenb`)
"""
nb_sobj = os.path.join(dir, 'nb.sobj')
old_nb = pickle.loads(open(nb_sobj).read())
######################################################################
# Tell user what is going on and make a backup
######################################################################
print("")
print("*" * 80)
print("*")
print("* The Sage notebook at")
print("*")
print("* '%s'" % os.path.abspath(dir))
print("*")
print("* will be upgraded to a new format and stored in")
print("*")
print("* '%s.sagenb'." % os.path.abspath(dir))
print("*")
print("* Your existing notebook will not be modified in any way.")
print("*")
print("*" * 80)
print("")
ans = raw_input("Would like to continue? [YES or no] ").lower()
if ans not in ['', 'y', 'yes']:
raise RuntimeError("User aborted upgrade.")
# Create new notebook
new_nb = Notebook(dir + '.sagenb')
# Define a function for transfering the attributes of one object to another.
def transfer_attributes(old, new, attributes):
for attr_old, attr_new in attributes:
if hasattr(old, attr_old):
setattr(new, attr_new, getattr(old, attr_old))
# Transfer all the notebook attributes to our new notebook object
new_nb.conf().confs = old_nb.conf().confs
for t in ['pretty_print', 'server_pool', 'ulimit', 'system']:
if hasattr(old_nb, '_Notebook__' + t):
new_nb.conf().confs[t] = getattr(old_nb, '_Notebook__' + t)
# Now update the user data from the old notebook to the new one:
print("Migrating %s user accounts..." % len(old_nb.user_manager().users()))
users = new_nb.user_manager().users()
for username, old_user in iteritems(old_nb.user_manager().users()):
new_user = user.User(old_user.username(), '',
old_user.get_email(), old_user.account_type())
new_user.set_hashed_password(old_user.password())
transfer_attributes(old_user, new_user,
[('_User__email_confirmed', '_email_confirmed'),
('_User__temporary_password', '_temporary_password'),
('_User__is_suspended', '_is_suspended')])
# Fix the __conf field, which is also an instance of a class
new_user.conf().confs = old_user.conf().confs
users[new_user.username()] = new_user
######################################################################
# Set the worksheets of the new notebook equal to the ones from
# the old one.
######################################################################
def migrate_old_worksheet(old_worksheet):
"""
Migrates an old worksheet to the new format.
"""
old_ws_dirname = old_ws._Worksheet__filename.partition(os.path.sep)[-1]
new_ws = new_nb.worksheet(old_ws.owner(), old_ws_dirname)
# some ugly creation of new attributes from what used to be stored
tags = {}
try:
for user, val in iteritems(old_ws._Worksheet__user_view):
if isinstance(user, str):
# There was a bug in the old notebook where sometimes the
# user was the *module* "user", so we don't include that
# invalid data.
tags[user] = [val]
except AttributeError:
pass
import time
last_change = (old_ws.last_to_edit(), old_ws.last_edited())
try:
published_id_number = int(os.path.split(old_ws._Worksheet__published_version)[1])
except AttributeError:
published_id_number = None
ws_pub = old_ws.worksheet_that_was_published().filename().split('/')
ws_pub = (ws_pub[0], int(ws_pub[1]))
obj = {'name': old_ws.name(), 'system': old_ws.system(),
'viewers': old_ws.viewers(),
'collaborators' :old_ws.collaborators(),
'pretty_print': old_ws.pretty_print(),
'ratings': old_ws.ratings(),
'auto_publish': old_ws.is_auto_publish(), 'tags': tags,
'last_change': last_change,
'published_id_number': published_id_number,
'worksheet_that_was_published': ws_pub
}
new_ws.reconstruct_from_basic(obj)
base = os.path.join(dir, 'worksheets', old_ws.filename())
worksheet_file = os.path.join(base, 'worksheet.txt')
if os.path.exists(worksheet_file):
text = open(worksheet_file).read()
# delete first two lines -- we don't embed the title or
# system in the worksheet text anymore.
i = text.find('\n')
text=text[i+1:]
i = text.find('\n')
text=text[i+1:]
new_ws.edit_save(text)
# copy over the DATA directory and cells directories
try:
dest = new_ws.data_directory()
if os.path.exists(dest):
shutil.rmtree(dest)
shutil.copytree(old_ws.data_directory(), dest)
except Exception as msg:
print(msg)
try:
if os.path.exists(old_ws.cells_directory()):
dest = new_ws.cells_directory()
if os.path.exists(dest):
shutil.rmtree(dest)
shutil.copytree(old_ws.cells_directory(), dest)
except Exception as msg:
print(msg)
return new_ws
worksheets = WorksheetDict(new_nb)
num_worksheets = len(old_nb._Notebook__worksheets)
print("Migrating (at most) %s worksheets..." % num_worksheets)
from sage.misc.all import walltime
tm = walltime()
i = 0
for ws_name, old_ws in iteritems(old_nb._Notebook__worksheets):
if old_ws.docbrowser(): continue
i += 1
if i % 25==0:
percent = i / float(num_worksheets)
# total_time * percent = time_so_far, so
# remaining_time = total_time - time_so_far = time_so_far*(1/percent - 1)
print(" Migrated %s (of %s) worksheets (about %.0f seconds remaining)" % (
i, num_worksheets, walltime(tm) * (1 / percent - 1)))
new_ws = migrate_old_worksheet(old_ws)
worksheets[new_ws.filename()] = new_ws
new_nb._Notebook__worksheets = worksheets
# Migrating history
new_nb._user_history = {}
for username in old_nb.user_manager().users().keys():
history_file = os.path.join(dir, 'worksheets', username, 'history.sobj')
if os.path.exists(history_file):
new_nb._user_history[username] = pickle.loads(open(history_file).read())
# Save our newly migrated notebook to disk
new_nb.save()
print("Worksheet migration completed.")
return new_nb
def make_path_relative(dir):
r"""
Replace an absolute path with a relative path, if possible.
Otherwise, return the given path.
INPUT:
- ``dir`` - a string containing, e.g., a directory name
OUTPUT:
- a string
"""
base, file = os.path.split(dir)
if os.path.exists(file):
return file
return dir
##########################################################
# Misc
##########################################################
def sort_worksheet_list(v, sort, reverse):
"""
Sort a given list on a given key, in a given order.
INPUT:
- ``sort`` - a string; 'last_edited', 'owner', 'rating', or 'name'
- ``reverse`` - a bool; if True, reverse the order of the sort.
OUTPUT:
- the sorted list
"""
f = None
if sort == 'last_edited':
def c(a):
return a.last_edited()
reverse = not reverse
f = c
elif sort == 'name':
def c(a):
return (a.name().lower(), -a.last_edited())
f = c
elif sort == 'owner':
def c(a):
return (a.owner().lower(), -a.last_edited())
f = c
elif sort == "rating":
def c(a):
return (a.rating(), -a.last_edited())
reverse = not reverse
f = c
else:
raise ValueError("invalid sort key '%s'" % sort)
v.sort(key=f, reverse=reverse)
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