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cli.py
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#!/usr/bin/env python
#
# The MIT License
#
# Copyright (c) 2008 Bob Farrell
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
from __future__ import with_statement
import codecs
import os
import sys
import curses
import code
import traceback
import re
import time
import urllib
import rlcompleter
import inspect
import signal
import struct
import termios
import fcntl
import string
import socket
import pydoc
import types
import unicodedata
import textwrap
from cStringIO import StringIO
from itertools import takewhile
from locale import LC_ALL, getpreferredencoding, setlocale
from optparse import OptionParser
from urlparse import urljoin
from xmlrpclib import ServerProxy, Error as XMLRPCError
from ConfigParser import ConfigParser, NoSectionError, NoOptionError
# These are used for syntax hilighting.
from pygments import format
from pygments.lexers import PythonLexer
from pygments.token import Token
from bpython.formatter import BPythonFormatter, Parenthesis
# This for completion
from bpython import importcompletion
from glob import glob
# This for config
from bpython.config import Struct, loadini, migrate_rc
# This for keys
from bpython.keys import key_dispatch
from bpython import __version__
from bpython.pager import page
def log(x):
f = open('/tmp/bpython.log', 'a')
f.write('%s\n' % (x,))
py3 = sys.version_info[0] == 3
orig_stdout = sys.__stdout__
stdscr = None
def calculate_screen_lines(tokens, width, cursor=0):
"""Given a stream of tokens and a screen width plus an optional
initial cursor position, return the amount of needed lines on the
screen."""
lines = 1
pos = cursor
for (token, value) in tokens:
if token is Token.Text and value == '\n':
lines += 1
else:
pos += len(value)
lines += pos // width
pos %= width
return lines
def parsekeywordpairs(signature):
tokens = PythonLexer().get_tokens(signature)
stack = []
substack = []
parendepth = 0
begin = False
for token, value in tokens:
if not begin:
if token is Token.Punctuation and value == u'(':
begin = True
continue
if token is Token.Punctuation:
if value == u'(':
parendepth += 1
elif value == u')' and parendepth:
parendepth -= 1
elif value == ':':
# End of signature reached
break
if parendepth:
substack.append(value)
continue
if ((token is Token.Punctuation and value == ')')
or (token is Token.Punctuation and value == u',')
and not parendepth):
stack.append(substack[:])
del substack[:]
continue
if value and value.strip():
substack.append(value)
d = {}
for item in stack:
if len(item) >= 3:
d[item[0]] = ''.join(item[2:])
return d
def fixlongargs(f, argspec):
"""Functions taking default arguments that are references to other objects
whose str() is too big will cause breakage, so we swap out the object
itself with the name it was referenced with in the source by parsing the
source itself !"""
if argspec[3] is None:
# No keyword args, no need to do anything
return
values = list(argspec[3])
if not values:
return
keys = argspec[0][-len(values):]
try:
src = inspect.getsourcelines(f)
except IOError:
return
signature = ''.join(src[0])
kwparsed = parsekeywordpairs(signature)
for i, (key, value) in enumerate(zip(keys, values)):
if len(str(value)) != len(kwparsed[key]):
values[i] = kwparsed[key]
argspec[3] = values
class FakeStdin(object):
"""Provide a fake stdin type for things like raw_input() etc."""
def __init__(self, interface):
"""Take the curses Repl on init and assume it provides a get_key method
which, fortunately, it does."""
self.encoding = getpreferredencoding()
self.interface = interface
def isatty(self):
return True
def readline(self):
"""I can't think of any reason why anything other than readline would
be useful in the context of an interactive interpreter so this is the
only one I've done anything with. The others are just there in case
someone does something weird to stop it from blowing up."""
curses.raw(True)
buffer = ''
try:
while True:
key = self.interface.get_key()
if key in [curses.erasechar(), 'KEY_BACKSPACE']:
buffer = buffer[:-1]
y, x = self.interface.scr.getyx()
if x:
self.interface.scr.delch(y, x - 1)
continue
elif (key != '\n' and
(len(key) > 1 or unicodedata.category(key) == 'Cc')):
continue
sys.stdout.write(key)
# Include the \n in the buffer - raw_input() seems to deal with trailing
# linebreaks and will break if it gets an empty string.
buffer += key
if key == '\n':
break
finally:
curses.raw(False)
if py3:
return buffer
else:
return buffer.encode(getpreferredencoding())
def read(self, x):
pass
def readlines(self, x):
pass
OPTS = Struct()
DO_RESIZE = False
# TODO:
#
# Tab completion does not work if not at the end of the line.
#
# Numerous optimisations can be made but it seems to do all the lookup stuff
# fast enough on even my crappy server so I'm not too bothered about that
# at the moment.
#
# The popup window that displays the argspecs and completion suggestions
# needs to be an instance of a ListWin class or something so I can wrap
# the addstr stuff to a higher level.
#
def DEBUG(s):
"""This shouldn't ever be called in any release of bpython, so
beat me up if you find anything calling it."""
open('/tmp/bpython-debug', 'a').write("%s\n" % (str(s), ))
def get_color(name):
return colors[OPTS.color_scheme[name].lower()]
def get_colpair(name):
return curses.color_pair(get_color(name) + 1)
def make_colors():
"""Init all the colours in curses and bang them into a dictionary"""
# blacK, Red, Green, Yellow, Blue, Magenta, Cyan, White, Default:
c = {
'k' : 0,
'r' : 1,
'g' : 2,
'y' : 3,
'b' : 4,
'm' : 5,
'c' : 6,
'w' : 7,
'd' : -1,
}
for i in range(63):
if i > 7:
j = i // 8
else:
j = c[OPTS.color_scheme['background']]
curses.init_pair(i+1, i % 8, j)
return c
def next_token_inside_string(s, inside_string):
"""Given a code string s and an initial state inside_string, return
whether the next token will be inside a string or not."""
for token, value in PythonLexer().get_tokens(s):
if token is Token.String:
value = value.lstrip('bBrRuU')
if value in ['"""', "'''", '"', "'"]:
if not inside_string:
inside_string = value
elif value == inside_string:
inside_string = False
return inside_string
class Interpreter(code.InteractiveInterpreter):
def __init__(self, locals=None, encoding=sys.getdefaultencoding()):
"""The syntaxerror callback can be set at any time and will be called
on a caught syntax error. The purpose for this in bpython is so that
the repl can be instantiated after the interpreter (which it
necessarily must be with the current factoring) and then an exception
callback can be added to the Interpeter instance afterwards - more
specifically, this is so that autoindentation does not occur after a
traceback."""
self.encoding = encoding
self.syntaxerror_callback = None
# Unfortunately code.InteractiveInterpreter is a classic class, so no super()
code.InteractiveInterpreter.__init__(self, locals)
if not py3:
def runsource(self, source):
source = '# coding: %s\n%s' % (self.encoding,
source.encode(self.encoding))
return code.InteractiveInterpreter.runsource(self, source)
def showsyntaxerror(self, filename=None):
"""Override the regular handler, the code's copied and pasted from
code.py, as per showtraceback, but with the syntaxerror callback called
and the text in a pretty colour."""
if self.syntaxerror_callback is not None:
self.syntaxerror_callback()
type, value, sys.last_traceback = sys.exc_info()
sys.last_type = type
sys.last_value = value
if filename and type is SyntaxError:
# Work hard to stuff the correct filename in the exception
try:
msg, (dummy_filename, lineno, offset, line) = value
except:
# Not the format we expect; leave it alone
pass
else:
# Stuff in the right filename and right lineno
value = SyntaxError(msg, (filename, lineno - 1, offset, line))
sys.last_value = value
list = traceback.format_exception_only(type, value)
self.writetb(list)
def showtraceback(self):
"""This needs to override the default traceback thing
so it can put it into a pretty colour and maybe other
stuff, I don't know"""
try:
t, v, tb = sys.exc_info()
sys.last_type = t
sys.last_value = v
sys.last_traceback = tb
tblist = traceback.extract_tb(tb)
del tblist[:1]
# Set the right lineno (encoding header adds an extra line)
tblist[0] = (tblist[0][0], 1) + tblist[0][2:]
l = traceback.format_list(tblist)
if l:
l.insert(0, "Traceback (most recent call last):\n")
l[len(l):] = traceback.format_exception_only(t, v)
finally:
tblist = tb = None
self.writetb(l)
def writetb(self, l):
"""This outputs the traceback and should be overridden for anything
fancy."""
map(self.write, ["\x01%s\x03%s" % (OPTS.color_scheme['error'], i) for i in l])
class AttrCleaner(object):
"""A context manager that tries to make an object not exhibit side-effects
on attribute lookup."""
def __init__(self, obj):
self.obj = obj
def __enter__(self):
"""Try to make an object not exhibit side-effects on attribute
lookup."""
type_ = type(self.obj)
__getattribute__ = None
__getattr__ = None
# Dark magic:
# If __getattribute__ doesn't exist on the class and __getattr__ does
# then __getattr__ will be called when doing
# getattr(type_, '__getattribute__', None)
# so we need to first remove the __getattr__, then the
# __getattribute__, then look up the attributes and then restore the
# original methods. :-(
# The upshot being that introspecting on an object to display its
# attributes will avoid unwanted side-effects.
if py3 or type_ != types.InstanceType:
__getattr__ = getattr(type_, '__getattr__', None)
if __getattr__ is not None:
try:
setattr(type_, '__getattr__', (lambda _: None))
except TypeError:
__getattr__ = None
__getattribute__ = getattr(type_, '__getattribute__', None)
if __getattribute__ is not None:
try:
setattr(type_, '__getattribute__', object.__getattribute__)
except TypeError:
# XXX: This happens for e.g. built-in types
__getattribute__ = None
self.attribs = (__getattribute__, __getattr__)
# /Dark magic
def __exit__(self, exc_type, exc_val, exc_tb):
"""Restore an object's magic methods."""
type_ = type(self.obj)
__getattribute__, __getattr__ = self.attribs
# Dark magic:
if __getattribute__ is not None:
setattr(type_, '__getattribute__', __getattribute__)
if __getattr__ is not None:
setattr(type_, '__getattr__', __getattr__)
# /Dark magic
class Repl(object):
"""Implements the necessary guff for a Python-repl-alike interface
The execution of the code entered and all that stuff was taken from the
Python code module, I had to copy it instead of inheriting it, I can't
remember why. The rest of the stuff is basically what makes it fancy.
It reads what you type, passes it to a lexer and highlighter which
returns a formatted string. This then gets passed to echo() which
parses that string and prints to the curses screen in appropriate
colours and/or bold attribute.
The Repl class also keeps two stacks of lines that the user has typed in:
One to be used for the undo feature. I am not happy with the way this
works. The only way I have been able to think of is to keep the code
that's been typed in in memory and re-evaluate it in its entirety for each
"undo" operation. Obviously this means some operations could be extremely
slow. I'm not even by any means certain that this truly represents a
genuine "undo" implementation, but it does seem to be generally pretty
effective.
If anyone has any suggestions for how this could be improved, I'd be happy
to hear them and implement it/accept a patch. I researched a bit into the
idea of keeping the entire Python state in memory, but this really seems
very difficult (I believe it may actually be impossible to work) and has
its own problems too.
The other stack is for keeping a history for pressing the up/down keys
to go back and forth between lines.
"""#TODO: Split the class up a bit so the curses stuff isn't so integrated.
"""
"""
def __init__(self, scr, interp, statusbar=None, idle=None):
"""Initialise the repl with, unfortunately, a curses screen passed to
it. This needs to be split up so the curses crap isn't in here.
interp is a Python code.InteractiveInterpreter instance
The optional 'idle' parameter is a function that the repl call while
it's blocking (waiting for keypresses). This, again, should be in a
different class"""
self.cut_buffer = ''
self.buffer = []
self.scr = scr
self.interp = interp
self.match = False
self.rl_hist = []
self.stdout_hist = ''
self.s_hist = []
self.history = []
self.h_i = 0
self.in_hist = False
self.evaluating = False
self.do_exit = False
self.cpos = 0
# Use the interpreter's namespace only for the readline stuff:
self.completer = rlcompleter.Completer(self.interp.locals)
self.completer.attr_matches = self.attr_matches
# Gna, Py 2.6's rlcompleter searches for __call__ inside the
# instance instead of the type, so we monkeypatch to prevent
# side-effects (__getattr__/__getattribute__)
self.completer._callable_postfix = self._callable_postfix
self.statusbar = statusbar
self.list_win = newwin(1, 1, 1, 1)
self.idle = idle
self.f_string = ''
self.matches = []
self.argspec = None
self.s = ''
self.inside_string = False
self.highlighted_paren = None
self.list_win_visible = False
self._C = {}
sys.stdin = FakeStdin(self)
self.paste_mode = False
self.last_key_press = time.time()
self.paste_time = 0.02
self.prev_block_finished = 0
sys.path.insert(0, '.')
if not OPTS.arg_spec:
return
pythonhist = os.path.expanduser('~/.pythonhist')
if os.path.exists(pythonhist):
with codecs.open(pythonhist, 'r', getpreferredencoding(),
'ignore') as hfile:
self.rl_hist = hfile.readlines()
def attr_matches(self, text):
"""Taken from rlcompleter.py and bent to my will."""
m = re.match(r"(\w+(\.\w+)*)\.(\w*)", text)
if not m:
return []
expr, attr = m.group(1, 3)
if expr.isdigit():
# Special case: float literal, using attrs here will result in
# a SyntaxError
return []
obj = eval(expr, self.interp.locals)
with AttrCleaner(obj):
matches = self.attr_lookup(obj, expr, attr)
return matches
def attr_lookup(self, obj, expr, attr):
"""Second half of original attr_matches method factored out so it can
be wrapped in a safe try/finally block in case anything bad happens to
restore the original __getattribute__ method."""
words = dir(obj)
if hasattr(obj, '__class__'):
words.append('__class__')
words = words + rlcompleter.get_class_members(obj.__class__)
matches = []
n = len(attr)
for word in words:
if word[:n] == attr and word != "__builtins__":
matches.append("%s.%s" % (expr, word))
return matches
def _callable_postfix(self, value, word):
"""rlcompleter's _callable_postfix done right."""
with AttrCleaner(value):
if hasattr(value, '__call__'):
word += '('
return word
def current_string(self):
"""Return the current string.
Note: This method will not really work for multiline strings."""
inside_string = next_token_inside_string(self.s, self.inside_string)
if inside_string:
string = list()
next_char = ''
for (char, next_char) in zip(reversed(self.s),
reversed(self.s[:-1])):
if char == inside_string and next_char != '\\':
return ''.join(reversed(string))
string.append(char)
else:
if next_char == inside_string:
return ''.join(reversed(string))
return ''
def cw(self):
"""Return the current word, i.e. the (incomplete) word directly to the
left of the cursor"""
if self.cpos:
# I don't know if autocomplete should be disabled if the cursor
# isn't at the end of the line, but that's what this does for now.
return
l = len(self.s)
if (not self.s or
(not self.s[l-1].isalnum() and
self.s[l-1] not in ('.', '_'))):
return
i = 1
while i < l+1:
if not self.s[-i].isalnum() and self.s[-i] not in ('.', '_'):
break
i += 1
return self.s[-i +1:]
def get_args(self):
"""Check if an unclosed parenthesis exists, then attempt to get the
argspec() for it. On success, update self.argspec and return True,
otherwise set self.argspec to None and return False"""
self.current_func = None
def getpydocspec(f, func):
try:
argspec = pydoc.getdoc(f)
except NameError:
return None
rx = re.compile(r'([a-zA-Z_][a-zA-Z0-9_]*?)\((.*?)\)')
s = rx.search(argspec)
if s is None:
return None
if not hasattr(f, '__name__') or s.groups()[0] != f.__name__:
return None
args = [i.strip() for i in s.groups()[1].split(',')]
return [func, (args, None, None, None)]
def getargspec(func):
try:
if func in self.interp.locals:
f = self.interp.locals[func]
except TypeError:
return None
else:
try:
f = eval(func, self.interp.locals)
except Exception:
# Same deal with the exceptions :(
return None
else:
self.current_func = f
is_bound_method = inspect.ismethod(f) and f.im_self is not None
try:
if inspect.isclass(f):
self.current_func = f
argspec = inspect.getargspec(f.__init__)
self.current_func = f.__init__
is_bound_method = True
else:
argspec = inspect.getargspec(f)
self.current_func = f
argspec = list(argspec)
fixlongargs(f, argspec)
self.argspec = [func, argspec, is_bound_method]
return True
except (NameError, TypeError, KeyError):
with AttrCleaner(f):
t = getpydocspec(f, func)
if t is None:
return None
self.argspec = t
if inspect.ismethoddescriptor(f):
self.argspec[1][0].insert(0, 'obj')
self.argspec.append(is_bound_method)
return True
except AttributeError:
# This happens if no __init__ is found
return None
if not OPTS.arg_spec:
return False
stack = [['', 0, '']]
try:
for (token, value) in PythonLexer().get_tokens(self.s):
if token is Token.Punctuation:
if value in '([{':
stack.append(['', 0, value])
elif value in ')]}':
stack.pop()
elif value == ',':
try:
stack[-1][1] += 1
except TypeError:
stack[-1][1] = ''
elif (token is Token.Name or token in Token.Name.subtypes or
token is Token.Operator and value == '.'):
stack[-1][0] += value
elif token is Token.Operator and value == '=':
stack[-1][1] = stack[-1][0]
else:
stack[-1][0] = ''
while stack[-1][2] in '[{':
stack.pop()
_, arg_number, _ = stack.pop()
func, _, _ = stack.pop()
except IndexError:
return False
if getargspec(func):
self.argspec.append(arg_number)
return True
return False
def check(self):
"""Check if paste mode should still be active and, if not, deactivate
it and force syntax highlighting."""
if (self.paste_mode
and time.time() - self.last_key_press > self.paste_time):
self.paste_mode = False
self.print_line(self.s)
def complete(self, tab=False):
"""Wrap the _complete method to determine the visibility of list_win
since there can be several reasons why it won't be displayed; this
makes it more manageable."""
if self.paste_mode and self.list_win_visible:
self.scr.touchwin()
if self.paste_mode:
return
if self.list_win_visible and not OPTS.auto_display_list:
self.scr.touchwin()
self.list_win_visible = False
return
if OPTS.auto_display_list or tab:
self.list_win_visible = self._complete(tab)
return
def _complete(self, tab=False):
"""Construct a full list of possible completions and construct and
display them in a window. Also check if there's an available argspec
(via the inspect module) and bang that on top of the completions too.
The return value is whether the list_win is visible or not."""
if not self.get_args():
self.argspec = None
cw = self.cw()
cs = self.current_string()
if not (cw or cs or self.argspec):
self.scr.redrawwin()
self.scr.refresh()
return False
if not cw:
self.matches = []
if cs and tab:
self.matches = list()
user_dir = os.path.expanduser('~')
for filename in glob(os.path.expanduser(cs + '*')):
if os.path.isdir(filename):
filename += os.path.sep
if cs.startswith('~'):
filename = '~' + filename[len(user_dir):]
self.matches.append(filename)
return True
# Check for import completion
e = False
matches = importcompletion.complete(self.s, cw)
if matches is not None and not matches:
self.matches = []
self.scr.redrawwin()
return False
if matches is None:
# Nope, no import, continue with normal completion
try:
self.completer.complete(cw, 0)
except Exception:
# This sucks, but it's either that or list all the exceptions that could
# possibly be raised here, so if anyone wants to do that, feel free to send me
# a patch. XXX: Make sure you raise here if you're debugging the completion
# stuff !
e = True
else:
matches = self.completer.matches
self.docstring = None
if e or not matches:
self.matches = []
if not self.argspec:
self.scr.redrawwin()
return False
if self.current_func is not None:
self.docstring = pydoc.getdoc(self.current_func)
if not self.docstring:
self.docstring = None
if not e and matches:
# remove duplicates and restore order
self.matches = sorted(set(matches))
if len(self.matches) == 1 and not OPTS.auto_display_list:
self.list_win_visible = True
self.tab()
return False
try:
self.show_list(self.matches, self.argspec)
except curses.error:
# XXX: This is a massive hack, it will go away when I get
# cusswords into a good enough state that we can start using it.
self.list_win.border()
self.list_win.refresh()
return False
return True
def show_list(self, items, topline=None):
shared = Struct()
shared.cols = 0
shared.rows = 0
shared.wl = 0
y, x = self.scr.getyx()
h, w = self.scr.getmaxyx()
down = (y < h // 2)
if down:
max_h = h - y
else:
max_h = y+1
max_w = int(w * 0.8)
self.list_win.erase()
if items and '.' in items[0]:
items = [x.rsplit('.')[-1] for x in items]
if topline:
height_offset = self.mkargspec(topline, down) + 1
else:
height_offset = 0
def lsize():
wl = max(len(i) for i in v_items) + 1
if not wl:
wl = 1
cols = ((max_w - 2) // wl) or 1
rows = len(v_items) // cols
if cols * rows < len(v_items):
rows += 1
if rows + 2 >= max_h:
rows = max_h - 2
return False
shared.rows = rows
shared.cols = cols
shared.wl = wl
return True
if items:
# visible items (we'll append until we can't fit any more in)
v_items = [items[0][:max_w-3]]
lsize()
else:
v_items = []
for i in items[1:]:
v_items.append(i[:max_w-3])
if not lsize():
del v_items[-1]
v_items[-1] = '...'
break
rows = shared.rows
if rows + height_offset < max_h:
rows += height_offset
display_rows = rows
else:
display_rows = rows + height_offset
cols = shared.cols
wl = shared.wl
if topline and not v_items:
w = max_w
elif wl + 3 > max_w:
w = max_w
else:
t = (cols + 1) * wl + 3
if t > max_w:
t = max_w
w = t
if height_offset and display_rows+5 >= max_h:
del v_items[-(cols * (height_offset)):]
if self.docstring is None:
self.list_win.resize(rows + 2, w)
else:
docstring = self.format_docstring(self.docstring, max_w - 2,
max_h - height_offset)
docstring_string = ''.join(docstring)
rows = len(docstring) - 1
self.list_win.resize(rows + 3, max_w)
if down:
self.list_win.mvwin(y + 1, 0)
else:
self.list_win.mvwin(y - rows - 2, 0)
if v_items:
self.list_win.addstr('\n ')
for ix, i in enumerate(v_items):
padding = (wl - len(i)) * ' '
self.list_win.addstr(i + padding, get_colpair('main'))
if ((cols == 1 or (ix and not (ix+1) % cols))
and ix + 1 < len(v_items)):
self.list_win.addstr('\n ')
if self.docstring is not None:
self.list_win.addstr(docstring_string, get_colpair('comment'))
# XXX: After all the trouble I had with sizing the list box (I'm not very good
# at that type of thing) I decided to do this bit of tidying up here just to
# make sure there's no unnececessary blank lines, it makes things look nicer.
y = self.list_win.getyx()[0]
self.list_win.resize(y + 2, w)
self.statusbar.win.touchwin()
self.statusbar.win.noutrefresh()
self.list_win.attron(get_colpair('main'))
self.list_win.border()
self.scr.touchwin()
self.scr.cursyncup()
self.scr.noutrefresh()
# This looks a little odd, but I can't figure a better way to stick the cursor
# back where it belongs (refreshing the window hides the list_win)
self.scr.move(*self.scr.getyx())
self.list_win.refresh()
def format_docstring(self, docstring, width, height):
"""Take a string and try to format it into a sane list of strings to be
put into the suggestion box."""
lines = docstring.split('\n')
out = []
i = 0
for line in lines:
out.append('\n')
i += 1
for block in textwrap.wrap(line, width):
out.append(' ' + block)
if i >= height:
return out
i += 1
return out
def mkargspec(self, topline, down):
"""This figures out what to do with the argspec and puts it nicely into
the list window. It returns the number of lines used to display the
argspec. It's also kind of messy due to it having to call so many
addstr() to get the colouring right, but it seems to be pretty
sturdy."""
r = 3
fn = topline[0]
args = topline[1][0]
kwargs = topline[1][3]
_args = topline[1][1]
_kwargs = topline[1][2]
is_bound_method = topline[2]
in_arg = topline[3]
max_w = int(self.scr.getmaxyx()[1] * 0.6)
self.list_win.erase()
self.list_win.resize(3, max_w)
h, w = self.list_win.getmaxyx()
self.list_win.addstr('\n ')
self.list_win.addstr(fn,
get_colpair('name') | curses.A_BOLD)
self.list_win.addstr(': (', get_colpair('name'))
maxh = self.scr.getmaxyx()[0]
if is_bound_method and isinstance(in_arg, int):
in_arg += 1
for k, i in enumerate(args):
y, x = self.list_win.getyx()
ln = len(str(i))
kw = None
if kwargs and k+1 > len(args) - len(kwargs):
kw = str(kwargs[k - (len(args) - len(kwargs))])
ln += len(kw) + 1
if ln + x >= w:
ty = self.list_win.getbegyx()[0]
if not down and ty > 0:
h +=1
self.list_win.mvwin(ty-1, 1)
self.list_win.resize(h, w)
elif down and h + r < maxh-ty:
h += 1
self.list_win.resize(h, w)
else:
break
r += 1
self.list_win.addstr('\n\t')
if str(i) == 'self' and k == 0:
color = get_colpair('name')
else:
color = get_colpair('token')
if k == in_arg or i == in_arg:
color |= curses.A_BOLD
self.list_win.addstr(str(i), color)
if kw: