def __init__(self, locals=None, encoding=None):

"""The syntaxerror callback can be set at any time and will be called

self.encoding = encoding or sys.getdefaultencoding()

self.syntaxerror_callback = None

code.InteractiveInterpreter.__init__(self, locals)

if not py3:

def runsource(self, source, filename='<input>', symbol='single',

encode=True):

if encode:

source = '# coding: %s\n%s' % (self.encoding,

source.encode(self.encoding))

return code.InteractiveInterpreter.runsource(self, source,

filename, symbol)

def showsyntaxerror(self, filename=None):

"""Override the regular handler, the code's copied and pasted from

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.args

except:

# Not the format we expect; leave it alone

pass

else:

# Stuff in the right filename and right lineno

if not py3:

lineno -= 1

value = SyntaxError(msg, (filename, lineno, 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

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)

if not py3:

for i, (filename, lineno, module, something) in enumerate(tblist):

if filename == '<input>':

tblist[i] = (filename, lineno - 1, module, something)

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, lines):

"""This outputs the traceback and should be overridden for anything

for line in lines:

def __init__(self, entries=None):

if entries is None:

self.entries = ['']

else:

self.entries = list(entries)

self.index = 0

self.saved_line = ''

def append(self, line):

line = line.rstrip('\n')

if line:

self.entries.append(line)

def first(self):

"""Move back to the beginning of the history."""

if not self.is_at_end:

self.index = len(self.entries)

return self.entries[-self.index]

def back(self):

"""Move one step back in the history."""

if not self.is_at_end:

self.index += 1

return self.entries[-self.index]

def forward(self):

"""Move one step forward in the history."""

if self.index > 1:

self.index -= 1

return self.entries[-self.index]

else:

self.index = 0

return self.saved_line

def last(self):

"""Move forward to the end of the history."""

if not self.is_at_start:

self.index = 0

return self.entries[0]

@property

def is_at_end(self):

return self.index >= len(self.entries) or self.index == -1

@property

def is_at_start(self):

return self.index == 0

def enter(self, line):

if self.index == 0:

self.saved_line = line

@classmethod

def from_filename(cls, filename):

history = cls()

history.load(filename)

return history

def load(self, filename, encoding):

with codecs.open(filename, 'r', encoding, 'ignore') as hfile:

for line in hfile:

self.append(line)

def reset(self):

self.index = 0

self.saved_line = ''

def save(self, filename, encoding, lines=0):

with codecs.open(filename, 'w', encoding, 'ignore') as hfile:

for line in self.entries[-lines:]:

hfile.write(line)

def __init__(self, current_word='', matches=[]):

self.current_word = current_word

self.matches = list(matches)

self.index = -1

def __nonzero__(self):

return self.index != -1

def __iter__(self):

return self

def current(self):

if self.index == -1:

raise ValueError('No current match.')

return self.matches[self.index]

def next(self):

self.index = (self.index + 1) % len(self.matches)

return self.matches[self.index]

def previous(self):

if self.index <= 0:

self.index = len(self.matches)

self.index -= 1

return self.matches[self.index]

def update(self, current_word='', matches=[]):

if current_word != self.current_word:

self.current_word = current_word

self.matches = list(matches)

def __init__(self, config, statusbar=None):

self.config = config

if statusbar:

self.statusbar = statusbar

def confirm(self, s):

raise NotImplementedError

def notify(self, s, n=10):

raise NotImplementedError

def file_prompt(self, s):

"""Implements the necessary guff for a Python-repl-alike interface

def __init__(self, interp, config):

"""Initialise the repl.

self.config = config

self.cut_buffer = ''

self.buffer = []

self.interp = interp

self.interp.syntaxerror_callback = self.clear_current_line

self.match = False

self.rl_history = History()

self.s_hist = []

self.history = []

self.evaluating = False

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.matches = []

self.matches_iter = MatchesIterator()

self.argspec = None

self.current_func = None

self.highlighted_paren = None

self.list_win_visible = False

self._C = {}

self.prev_block_finished = 0

self.interact = Interaction(self.config)

self.ps1 = '>>> '

self.ps2 = '... '

# previous pastebin content to prevent duplicate pastes, filled on call

# to repl.pastebin

self.prev_pastebin_content = ''

self.prev_pastebin_url = ''

# Necessary to fix mercurial.ui.ui expecting sys.stderr to have this

# attribute

self.closed = False

pythonhist = os.path.expanduser(self.config.hist_file)

if os.path.exists(pythonhist):

self.rl_history.load(pythonhist, getpreferredencoding())

def startup(self):

"""

filename = os.environ.get('PYTHONSTARTUP')

if filename and os.path.isfile(filename):

with open(filename, 'r') as f:

if py3:

self.interp.runsource(f.read(), filename, 'exec')

else:

self.interp.runsource(f.read(), filename, 'exec', encode=False)

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 inspection.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

words = dir(obj)

if hasattr(obj, '__class__'):

words.append('__class__')

words = words + rlcompleter.get_class_members(obj.__class__)

if has_abc and not isinstance(obj.__class__, abc.ABCMeta):

try:

words.remove('__abstractmethods__')

except ValueError:

pass

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 inspection.AttrCleaner(value):

if inspection.is_callable(value):

word += '('

return word

def current_string(self, concatenate=False):

"""Return the current string."""

tokens = self.tokenize(self.current_line())

string_tokens = list(takewhile(token_is_any_of([Token.String,

Token.Text]),

reversed(tokens)))

if not string_tokens:

return ''

opening = string_tokens.pop()[1]

string = list()

for (token, value) in reversed(string_tokens):

if token is Token.Text:

continue

elif opening is None:

opening = value

elif token is Token.String.Doc:

string.append(value[3:-3])

opening = None

elif value == opening:

opening = None

if not concatenate:

string = list()

else:

string.append(value)

if opening is None:

return ''

return ''.join(string)

def get_object(self, name):

attributes = name.split('.')

obj = eval(attributes.pop(0), self.interp.locals)

while attributes:

with inspection.AttrCleaner(obj):

obj = getattr(obj, attributes.pop(0))

return obj

def get_args(self):

"""Check if an unclosed parenthesis exists, then attempt to get the

self.current_func = None

if not self.config.arg_spec:

return False

# Get the name of the current function and where we are in

# the arguments

stack = [['', 0, '']]

try:

for (token, value) in PythonLexer().get_tokens(

self.current_line()):

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 value == ':' and stack[-1][2] == 'lambda':

stack.pop()

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]

elif token is Token.Keyword and value == 'lambda':

stack.append(['', 0, value])

else:

stack[-1][0] = ''

while stack[-1][2] in '[{':

stack.pop()

_, arg_number, _ = stack.pop()

func, _, _ = stack.pop()

except IndexError:

return False

if not func:

return False

try:

f = self.get_object(func)

except (AttributeError, NameError, SyntaxError):

return False

if inspect.isclass(f):

try:

if f.__init__ is not object.__init__:

f = f.__init__

except AttributeError:

return None

self.current_func = f

self.argspec = inspection.getargspec(func, f)

if self.argspec:

self.argspec.append(arg_number)

return True

return False

def get_source_of_current_name(self):

"""Return the source code of the object which is bound to the

try:

obj = self.current_func

if obj is None:

line = self.current_line()

if inspection.is_eval_safe_name(line):

obj = self.get_object(line)

source = inspect.getsource(obj)

except (AttributeError, IOError, NameError, TypeError):

return None

else:

return source

def complete(self, tab=False):

"""Construct a full list of possible completions and construct and

self.docstring = None

if not self.get_args():

self.argspec = None

elif self.current_func is not None:

try:

self.docstring = pydoc.getdoc(self.current_func)

except IndexError:

self.docstring = None

else:

# pydoc.getdoc() returns an empty string if no

# docstring was found

if not self.docstring:

self.docstring = None

cw = self.cw()

cs = self.current_string()

if not cw:

self.matches = []

self.matches_iter.update()

if not (cw or cs):

return bool(self.argspec)

if cs and tab:

# Filename completion

self.matches = list()

username = cs.split(os.path.sep, 1)[0]

user_dir = os.path.expanduser(username)

for filename in glob(os.path.expanduser(cs + '*')):

if os.path.isdir(filename):

filename += os.path.sep

if cs.startswith('~'):

filename = username + filename[len(user_dir):]

self.matches.append(filename)

self.matches_iter.update(cs, self.matches)

return bool(self.matches)

elif cs:

# Do not provide suggestions inside strings, as one cannot tab

# them so they would be really confusing.

self.matches_iter.update()

return False

# Check for import completion

e = False

matches = importcompletion.complete(self.current_line(), cw)

if matches is not None and not matches:

self.matches = []

self.matches_iter.update()

return False

if matches is None:

# Nope, no import, continue with normal completion

try:

self.completer.complete(cw, 0)

except Exception:

e = True

else:

matches = self.completer.matches

if not e and self.argspec:

matches.extend(name + '=' for name in self.argspec[1][0]

if isinstance(name, basestring) and name.startswith(cw))

if py3:

matches.extend(name + '=' for name in self.argspec[1][4]

if name.startswith(cw))

if not e and not cw.split('.')[-1].startswith('_'):

matches = [match for match in matches

if not match.split('.')[-1].startswith('_')]

if e or not matches:

self.matches = []

self.matches_iter.update()

if not self.argspec:

return False

else:

self.matches = sorted(set(matches))

if len(self.matches) == 1 and not self.config.auto_display_list:

self.list_win_visible = True

self.tab()

return False

self.matches_iter.update(cw, self.matches)

return True

def format_docstring(self, docstring, width, height):

"""Take a string and try to format it into a sane list of strings to be

lines = docstring.split('\n')

out = []

i = 0

for line in lines:

i += 1

if not line.strip():

out.append('\n')

for block in textwrap.wrap(line, width):

out.append(' ' + block + '\n')

if i >= height:

return out

i += 1

# Drop the last newline

out[-1] = out[-1].rstrip()

return out

def next_indentation(self):

"""Return the indentation of the next line based on the current

if self.buffer:

indentation = next_indentation(self.buffer[-1],

self.config.tab_length)

if indentation and self.config.dedent_after > 0:

line_is_empty = lambda line: not line.strip()

empty_lines = takewhile(line_is_empty, reversed(self.buffer))

if sum(1 for _ in empty_lines) >= self.config.dedent_after:

indentation -= 1

else:

indentation = 0

return indentation

def formatforfile(self, s):

"""Format the stdout buffer to something suitable for writing to disk,

def process():

for line in s.split('\n'):

if line.startswith(self.ps1):

yield line[len(self.ps1):]

elif line.startswith(self.ps2):

yield line[len(self.ps2):]

elif line.rstrip():

yield "# OUT: %s" % (line,)

return "\n".join(process())

def write2file(self):

"""Prompt for a filename and write the current contents of the stdout

try:

fn = self.interact.file_prompt('Save to file (Esc to cancel): ')

if not fn:

self.interact.notify("Save cancelled.")

return

except ValueError:

self.interact.notify("Save cancelled.")

return

if fn.startswith('~'):

fn = os.path.expanduser(fn)

s = self.formatforfile(self.getstdout())

try:

f = open(fn, 'w')

f.write(s)

f.close()

except IOError:

self.interact.notify("Disk write error for file '%s'." % (fn, ))

else:

self.interact.notify('Saved to %s' % (fn, ))

def pastebin(self, s=None):

"""Upload to a pastebin and display the URL in the status bar."""

if s is None:

s = self.getstdout()

if (self.config.pastebin_confirm and

not self.interact.confirm("Pastebin buffer? (y/N) ")):

self.interact.notify("Pastebin aborted")

return

pasteservice = ServerProxy(self.config.pastebin_url)

if s == self.prev_pastebin_content:

self.interact.notify('Duplicate pastebin. Previous URL: ' +

self.prev_pastebin_url)

return self.prev_pastebin_url

self.prev_pastebin_content = s

self.interact.notify('Posting data to pastebin...')

try:

paste_id = pasteservice.pastes.newPaste('pycon', s)

except (SocketError, XMLRPCError), e:

self.interact.notify('Upload failed: %s' % (str(e), ) )

return

paste_url_template = Template(self.config.pastebin_show_url)

paste_id = urlquote(paste_id)

paste_url = paste_url_template.safe_substitute(paste_id=paste_id)

self.prev_pastebin_url = paste_url

self.interact.notify('Pastebin URL: %s' % (paste_url, ), 10)

return paste_url

def push(self, s, insert_into_history=True):

"""Push a line of code onto the buffer so it can process it all

s = s.rstrip('\n')

self.buffer.append(s)

if insert_into_history:

self.rl_history.append(s)

more = self.interp.runsource('\n'.join(self.buffer))

if not more:

self.buffer = []

return more

def undo(self, n=1):

"""Go back in the undo history n steps and call reeavluate()

if not self.history:

return None

if len(self.history) < n:

n = len(self.history)

entries = list(self.rl_history.entries)

self.history = self.history[:-n]

self.reevaluate()

self.rl_history.entries = entries

def flush(self):

"""Olivier Grisel brought it to my attention that the logging

def close(self):

"""See the flush() method docstring."""

def tokenize(self, s, newline=False):

"""Tokenize a line of code."""

source = '\n'.join(self.buffer + [s])

cursor = len(source) - self.cpos

if self.cpos:

cursor += 1

stack = list()

all_tokens = list(PythonLexer().get_tokens(source))

# Unfortunately, Pygments adds a trailing newline and strings with

# no size, so strip them

while not all_tokens[-1][1]:

all_tokens.pop()

all_tokens[-1] = (all_tokens[-1][0], all_tokens[-1][1].rstrip('\n'))

line = pos = 0

parens = dict(zip('{([', '})]'))

line_tokens = list()

saved_tokens = list()

search_for_paren = True

for (token, value) in split_lines(all_tokens):

pos += len(value)

if token is Token.Text and value == '\n':

line += 1

# Remove trailing newline

line_tokens = list()

saved_tokens = list()

continue

line_tokens.append((token, value))

saved_tokens.append((token, value))

if not search_for_paren:

continue

under_cursor = (pos == cursor)

if token is Token.Punctuation:

if value in parens:

if under_cursor:

line_tokens[-1] = (Parenthesis.UnderCursor, value)

# Push marker on the stack

stack.append((Parenthesis, value))

else:

stack.append((line, len(line_tokens) - 1,

line_tokens, value))

elif value in parens.itervalues():

saved_stack = list(stack)

try:

while True:

opening = stack.pop()

if parens[opening[-1]] == value:

break

except IndexError:

# SyntaxError.. more closed parentheses than

# opened or a wrong closing paren

opening = None

if not saved_stack:

search_for_paren = False

else:

stack = saved_stack

if opening and opening[0] is Parenthesis:

# Marker found

line_tokens[-1] = (Parenthesis, value)

search_for_paren = False

elif opening and under_cursor and not newline:

if self.cpos:

line_tokens[-1] = (Parenthesis.UnderCursor, value)

else:

# The cursor is at the end of line and next to

# the paren, so it doesn't reverse the paren.

# Therefore, we insert the Parenthesis token

# here instead of the Parenthesis.UnderCursor

# token.

line_tokens[-1] = (Parenthesis, value)

(lineno, i, tokens, opening) = opening

if lineno == len(self.buffer):

self.highlighted_paren = (lineno, saved_tokens)

line_tokens[i] = (Parenthesis, opening)

else:

self.highlighted_paren = (lineno, list(tokens))

# We need to redraw a line

tokens[i] = (Parenthesis, opening)

self.reprint_line(lineno, tokens)

search_for_paren = False

elif under_cursor:

search_for_paren = False

if line != len(self.buffer):

return list()

return line_tokens

def clear_current_line(self):

"""This is used as the exception callback for the Interpreter instance.

"""Given a code line, return the indentation of the next line."""

line = line.expandtabs(tab_length)

indentation = (len(line) - len(line.lstrip(' '))) // tab_length

if line.rstrip().endswith(':'):

indentation += 1

"""Given a code string s and an initial state inside_string, return

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

for (token, value) in tokens:

if not value:

continue

while value:

head, newline, value = value.partition('\n')

yield (token, head)

if newline:

"""Return a callable object that returns whether a token is of the

def token_is_type(token):

"""Return whether a token is of a certain type or not."""

token = token[0]

while token is not token_type and token.parent:

token = token.parent

return token is token_type

"""Return a callable object that returns whether a token is any of the

is_token_types = map(token_is, token_types)

def token_is_any_of(token):

return any(check(token) for check in is_token_types)