|
|
"""Implementation of magic functions for IPython's own logging.
|
|
|
"""
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (c) 2012 The IPython Development Team.
|
|
|
#
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
#
|
|
|
# The full license is in the file COPYING.txt, distributed with this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
# Stdlib
|
|
|
import os
|
|
|
import sys
|
|
|
|
|
|
# Our own packages
|
|
|
from IPython.core.magic import Magics, magics_class, line_magic
|
|
|
from warnings import warn
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Magic implementation classes
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
@magics_class
|
|
|
class LoggingMagics(Magics):
|
|
|
"""Magics related to all logging machinery."""
|
|
|
|
|
|
@line_magic
|
|
|
def logstart(self, parameter_s=''):
|
|
|
"""Start logging anywhere in a session.
|
|
|
|
|
|
%logstart [-o|-r|-t] [log_name [log_mode]]
|
|
|
|
|
|
If no name is given, it defaults to a file named 'ipython_log.py' in your
|
|
|
current directory, in 'rotate' mode (see below).
|
|
|
|
|
|
'%logstart name' saves to file 'name' in 'backup' mode. It saves your
|
|
|
history up to that point and then continues logging.
|
|
|
|
|
|
%logstart takes a second optional parameter: logging mode. This can be one
|
|
|
of (note that the modes are given unquoted):
|
|
|
|
|
|
append
|
|
|
Keep logging at the end of any existing file.
|
|
|
|
|
|
backup
|
|
|
Rename any existing file to name~ and start name.
|
|
|
|
|
|
global
|
|
|
Append to a single logfile in your home directory.
|
|
|
|
|
|
over
|
|
|
Overwrite any existing log.
|
|
|
|
|
|
rotate
|
|
|
Create rotating logs: name.1~, name.2~, etc.
|
|
|
|
|
|
Options:
|
|
|
|
|
|
-o
|
|
|
log also IPython's output. In this mode, all commands which
|
|
|
generate an Out[NN] prompt are recorded to the logfile, right after
|
|
|
their corresponding input line. The output lines are always
|
|
|
prepended with a '#[Out]# ' marker, so that the log remains valid
|
|
|
Python code.
|
|
|
|
|
|
Since this marker is always the same, filtering only the output from
|
|
|
a log is very easy, using for example a simple awk call::
|
|
|
|
|
|
awk -F'#\\[Out\\]# ' '{if($2) {print $2}}' ipython_log.py
|
|
|
|
|
|
-r
|
|
|
log 'raw' input. Normally, IPython's logs contain the processed
|
|
|
input, so that user lines are logged in their final form, converted
|
|
|
into valid Python. For example, %Exit is logged as
|
|
|
_ip.magic("Exit"). If the -r flag is given, all input is logged
|
|
|
exactly as typed, with no transformations applied.
|
|
|
|
|
|
-t
|
|
|
put timestamps before each input line logged (these are put in
|
|
|
comments).
|
|
|
"""
|
|
|
|
|
|
opts,par = self.parse_options(parameter_s,'ort')
|
|
|
log_output = 'o' in opts
|
|
|
log_raw_input = 'r' in opts
|
|
|
timestamp = 't' in opts
|
|
|
|
|
|
logger = self.shell.logger
|
|
|
|
|
|
# if no args are given, the defaults set in the logger constructor by
|
|
|
# ipython remain valid
|
|
|
if par:
|
|
|
try:
|
|
|
logfname,logmode = par.split()
|
|
|
except:
|
|
|
logfname = par
|
|
|
logmode = 'backup'
|
|
|
else:
|
|
|
logfname = logger.logfname
|
|
|
logmode = logger.logmode
|
|
|
# put logfname into rc struct as if it had been called on the command
|
|
|
# line, so it ends up saved in the log header Save it in case we need
|
|
|
# to restore it...
|
|
|
old_logfile = self.shell.logfile
|
|
|
if logfname:
|
|
|
logfname = os.path.expanduser(logfname)
|
|
|
self.shell.logfile = logfname
|
|
|
|
|
|
loghead = u'# IPython log file\n\n'
|
|
|
try:
|
|
|
logger.logstart(logfname, loghead, logmode, log_output, timestamp,
|
|
|
log_raw_input)
|
|
|
except:
|
|
|
self.shell.logfile = old_logfile
|
|
|
warn("Couldn't start log: %s" % sys.exc_info()[1])
|
|
|
else:
|
|
|
# log input history up to this point, optionally interleaving
|
|
|
# output if requested
|
|
|
|
|
|
if timestamp:
|
|
|
# disable timestamping for the previous history, since we've
|
|
|
# lost those already (no time machine here).
|
|
|
logger.timestamp = False
|
|
|
|
|
|
if log_raw_input:
|
|
|
input_hist = self.shell.history_manager.input_hist_raw
|
|
|
else:
|
|
|
input_hist = self.shell.history_manager.input_hist_parsed
|
|
|
|
|
|
if log_output:
|
|
|
log_write = logger.log_write
|
|
|
output_hist = self.shell.history_manager.output_hist
|
|
|
for n in range(1,len(input_hist)-1):
|
|
|
log_write(input_hist[n].rstrip() + u'\n')
|
|
|
if n in output_hist:
|
|
|
log_write(repr(output_hist[n]),'output')
|
|
|
else:
|
|
|
logger.log_write(u'\n'.join(input_hist[1:]))
|
|
|
logger.log_write(u'\n')
|
|
|
if timestamp:
|
|
|
# re-enable timestamping
|
|
|
logger.timestamp = True
|
|
|
|
|
|
print ('Activating auto-logging. '
|
|
|
'Current session state plus future input saved.')
|
|
|
logger.logstate()
|
|
|
|
|
|
@line_magic
|
|
|
def logstop(self, parameter_s=''):
|
|
|
"""Fully stop logging and close log file.
|
|
|
|
|
|
In order to start logging again, a new %logstart call needs to be made,
|
|
|
possibly (though not necessarily) with a new filename, mode and other
|
|
|
options."""
|
|
|
self.shell.logger.logstop()
|
|
|
|
|
|
@line_magic
|
|
|
def logoff(self, parameter_s=''):
|
|
|
"""Temporarily stop logging.
|
|
|
|
|
|
You must have previously started logging."""
|
|
|
self.shell.logger.switch_log(0)
|
|
|
|
|
|
@line_magic
|
|
|
def logon(self, parameter_s=''):
|
|
|
"""Restart logging.
|
|
|
|
|
|
This function is for restarting logging which you've temporarily
|
|
|
stopped with %logoff. For starting logging for the first time, you
|
|
|
must use the %logstart function, which allows you to specify an
|
|
|
optional log filename."""
|
|
|
|
|
|
self.shell.logger.switch_log(1)
|
|
|
|
|
|
@line_magic
|
|
|
def logstate(self, parameter_s=''):
|
|
|
"""Print the status of the logging system."""
|
|
|
|
|
|
self.shell.logger.logstate()
|
|
|
|
