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ddeaa854ddb9315e300727886771e557a9abbc33
pyreadline/pyreadline/modes/basemode.py
T
Jorgen Stenarson ddeaa854dd Extracted a BaseReadLine class without console stuff from ReadLine. 
tk_gui.py example of using the BaseReadLine class from a gui
continued to refactor to remove all console related stuff from modes, 
there are still some console related stuff in the history search commands
2008-06-26 22:11:53 +02:00

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# -*- coding: utf-8 -*-
#*****************************************************************************
# Copyright (C) 2003-2006 Gary Bishop.
# Copyright (C) 2006 Jorgen Stenarson. <jorgen.stenarson@bostream.nu>
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#*****************************************************************************
import os,re,math,glob,sys,time
import pyreadline.logger as logger
from pyreadline.logger import log,log_sock
from pyreadline.keysyms.common import make_KeyPress_from_keydescr
import pyreadline.lineeditor.lineobj as lineobj
import pyreadline.lineeditor.history as history
import pyreadline.clipboard as clipboard
from pyreadline.error import ReadlineError,GetSetError
from pyreadline.unicode_helper import ensure_str, ensure_unicode
in_ironpython="IronPython" in sys.version
class BaseMode(object):
mode="base"
def __init__(self,rlobj):
self.rlobj=rlobj
self.exit_dispatch = {}
self.key_dispatch = {}
self.argument=1
self.prevargument=None
self.l_buffer=lineobj.ReadLineTextBuffer("")
self._history=history.LineHistory()
self.completer_delims = " \t\n\"\\'`@$><=;|&{("
self.show_all_if_ambiguous = 'off'
self.mark_directories = 'on'
self.completer = None
self.begidx = 0
self.endidx = 0
self.tabstop = 4
self.startup_hook = None
self.pre_input_hook = None
self.first_prompt = True
self.prompt = ">>>"
#Paste settings
#assumes data on clipboard is path if shorter than 300 characters and doesn't contain \t or \n
#and replace \ with / for easier use in ipython
self.enable_ipython_paste_for_paths=True
#automatically convert tabseparated data to list of lists or array constructors
self.enable_ipython_paste_list_of_lists=True
self.enable_win32_clipboard=True
self.paste_line_buffer=[]
def __repr__(self):
return "<BaseMode>"
def _gs(x):
def g(self):
return getattr(self.rlobj,x)
def s(self,q):
setattr(self.rlobj,x,q)
return g,s
def _g(x):
def g(self):
return getattr(self.rlobj,x)
return g
def _argreset(self):
val=self.argument
self.argument=1
return val
argument_reset=property(_argreset)
#used in readline
ctrl_c_tap_time_interval=property(*_gs("ctrl_c_tap_time_interval"))
allow_ctrl_c=property(*_gs("allow_ctrl_c"))
_print_prompt=property(_g("_print_prompt"))
_update_line=property(_g("_update_line"))
console=property(_g("console"))
prompt_begin_pos=property(_g("prompt_begin_pos"))
prompt_end_pos=property(_g("prompt_end_pos"))
#used in completer _completions
# completer_delims=property(*_gs("completer_delims"))
_bell=property(_g("_bell"))
bell_style=property(_g("bell_style"))
#used in emacs
_clear_after=property(_g("_clear_after"))
_update_prompt_pos=property(_g("_update_prompt_pos"))
#not used in basemode or emacs
def process_keyevent(self, keyinfo):
raise NotImplementedError
def readline_setup(self, prompt=''):
self.l_buffer.selection_mark=-1
if self.first_prompt:
self.first_prompt = False
if self.startup_hook:
try:
self.startup_hook()
except:
print 'startup hook failed'
traceback.print_exc()
c = self.console
self.l_buffer.reset_line()
self.prompt = prompt
# self._print_prompt()
if self.pre_input_hook:
try:
self.pre_input_hook()
except:
print 'pre_input_hook failed'
traceback.print_exc()
self.pre_input_hook = None
####################################
def add_history(self, text):
self._history.add_history(lineobj.ReadLineTextBuffer(text))
#Create key bindings:
def rl_settings_to_string(self):
out=["%-20s: %s"%("show all if ambigous",self.show_all_if_ambiguous)]
out.append("%-20s: %s"%("mark_directories",self.mark_directories))
out.append("%-20s: %s"%("bell_style",self.bell_style))
out.append("------------- key bindings ------------")
tablepat="%-7s %-7s %-7s %-15s %-15s "
out.append(tablepat%("Control","Meta","Shift","Keycode/char","Function"))
bindings=[(k[0],k[1],k[2],k[3],v.__name__) for k,v in self.key_dispatch.iteritems()]
bindings.sort()
for key in bindings:
out.append(tablepat%(key))
return out
def _bind_key(self, key, func):
'''setup the mapping from key to call the function.'''
if type(func) != type(self._bind_key):
print "Trying to bind non method to keystroke:%s,%s"%(key,func)
raise PyreadlineError("Trying to bind non method to keystroke:%s,%s,%s,%s"%(key,func,type(func),type(self._bind_key)))
keyinfo = make_KeyPress_from_keydescr(key.lower()).tuple()
log(">>>%s -> %s<<<"%(keyinfo,func.__name__))
self.key_dispatch[keyinfo] = func
def _bind_exit_key(self, key):
'''setup the mapping from key to call the function.'''
keyinfo = make_KeyPress_from_keydescr(key.lower()).tuple()
self.exit_dispatch[keyinfo] = None
def init_editing_mode(self, e): # (C-e)
'''When in vi command mode, this causes a switch to emacs editing
mode.'''
raise NotImplementedError
#completion commands
def _get_completions(self):
'''Return a list of possible completions for the string ending at the point.
Also set begidx and endidx in the process.'''
completions = []
self.begidx = self.l_buffer.point
self.endidx = self.l_buffer.point
buf=self.l_buffer.line_buffer
if self.completer:
# get the string to complete
while self.begidx > 0:
self.begidx -= 1
if buf[self.begidx] in self.completer_delims:
self.begidx += 1
break
text = ensure_str(''.join(buf[self.begidx:self.endidx]))
log('complete text="%s"' % text)
i = 0
while 1:
try:
r = ensure_unicode(self.completer(text, i))
except:
break
i += 1
if r and r not in completions:
completions.append(r)
else:
break
log('text completions=%s' % completions)
if not completions:
# get the filename to complete
while self.begidx > 0:
self.begidx -= 1
if buf[self.begidx] in ' \t\n':
self.begidx += 1
break
text = ensure_str(''.join(buf[self.begidx:self.endidx]))
log('file complete text="%s"' % text)
completions = map(ensure_unicode, glob.glob(os.path.expanduser(text) + '*'))
if self.mark_directories == 'on':
mc = []
for f in completions:
if os.path.isdir(f):
mc.append(f + os.sep)
else:
mc.append(f)
completions = mc
log('fnames=%s' % completions)
return completions
def _display_completions(self, completions):
if not completions:
return
self.console.write('\n')
wmax = max(map(len, completions))
w, h = self.console.size()
cols = max(1, int((w-1) / (wmax+1)))
rows = int(math.ceil(float(len(completions)) / cols))
for row in range(rows):
s = ''
for col in range(cols):
i = col*rows + row
if i < len(completions):
self.console.write(completions[i].ljust(wmax+1))
self.console.write('\n')
if in_ironpython:
self.prompt=sys.ps1
self._print_prompt()
def complete(self, e): # (TAB)
'''Attempt to perform completion on the text before point. The
actual completion performed is application-specific. The default is
filename completion.'''
completions = self._get_completions()
if completions:
cprefix = commonprefix(completions)
rep = [ c for c in cprefix ]
point=self.l_buffer.point
self.l_buffer[self.begidx:self.endidx] = rep
self.l_buffer.point = point + len(rep) - (self.endidx - self.begidx)
if len(completions) > 1:
if self.show_all_if_ambiguous == 'on':
self._display_completions(completions)
else:
self._bell()
else:
self._bell()
def possible_completions(self, e): # (M-?)
'''List the possible completions of the text before point. '''
completions = self._get_completions()
self._display_completions(completions)
def insert_completions(self, e): # (M-*)
'''Insert all completions of the text before point that would have
been generated by possible-completions.'''
completions = self._get_completions()
b = self.begidx
e = self.endidx
for comp in completions:
rep = [ c for c in comp ]
rep.append(' ')
self.l_buffer[b:e] = rep
b += len(rep)
e = b
self.line_cursor = b
def menu_complete(self, e): # ()
'''Similar to complete, but replaces the word to be completed with a
single match from the list of possible completions. Repeated
execution of menu-complete steps through the list of possible
completions, inserting each match in turn. At the end of the list of
completions, the bell is rung (subject to the setting of bell-style)
and the original text is restored. An argument of n moves n
positions forward in the list of matches; a negative argument may be
used to move backward through the list. This command is intended to
be bound to TAB, but is unbound by default.'''
pass
### Methods below here are bindable emacs functions
def insert_text(self, string):
'''Insert text into the command line.'''
self.l_buffer.insert_text(string)
def beginning_of_line(self, e): # (C-a)
'''Move to the start of the current line. '''
self.l_buffer.beginning_of_line()
def end_of_line(self, e): # (C-e)
'''Move to the end of the line. '''
self.l_buffer.end_of_line()
def forward_char(self, e): # (C-f)
'''Move forward a character. '''
self.l_buffer.forward_char(self.argument_reset)
def backward_char(self, e): # (C-b)
'''Move back a character. '''
self.l_buffer.backward_char(self.argument_reset)
def forward_word(self, e): # (M-f)
'''Move forward to the end of the next word. Words are composed of
letters and digits.'''
self.l_buffer.forward_word(self.argument_reset)
def backward_word(self, e): # (M-b)
'''Move back to the start of the current or previous word. Words are
composed of letters and digits.'''
self.l_buffer.backward_word(self.argument_reset)
def forward_word_end(self, e): # ()
'''Move forward to the end of the next word. Words are composed of
letters and digits.'''
self.l_buffer.forward_word_end(self.argument_reset)
def backward_word_end(self, e): # ()
'''Move forward to the end of the next word. Words are composed of
letters and digits.'''
self.l_buffer.backward_word_end(self.argument_reset)
### Movement with extend selection
def beginning_of_line_extend_selection(self, e): #
'''Move to the start of the current line. '''
self.l_buffer.beginning_of_line_extend_selection()
def end_of_line_extend_selection(self, e): #
'''Move to the end of the line. '''
self.l_buffer.end_of_line_extend_selection()
def forward_char_extend_selection(self, e): #
'''Move forward a character. '''
self.l_buffer.forward_char_extend_selection(self.argument_reset)
def backward_char_extend_selection(self, e): #
'''Move back a character. '''
self.l_buffer.backward_char_extend_selection(self.argument_reset)
def forward_word_extend_selection(self, e): #
'''Move forward to the end of the next word. Words are composed of
letters and digits.'''
self.l_buffer.forward_word_extend_selection(self.argument_reset)
def backward_word_extend_selection(self, e): #
'''Move back to the start of the current or previous word. Words are
composed of letters and digits.'''
self.l_buffer.backward_word_extend_selection(self.argument_reset)
def forward_word_end_extend_selection(self, e): #
'''Move forward to the end of the next word. Words are composed of
letters and digits.'''
self.l_buffer.forward_word_end_extend_selection(self.argument_reset)
def backward_word_end_extend_selection(self, e): #
'''Move forward to the end of the next word. Words are composed of
letters and digits.'''
self.l_buffer.forward_word_end_extend_selection(self.argument_reset)
######## Change case
def upcase_word(self, e): # (M-u)
'''Uppercase the current (or following) word. With a negative
argument, uppercase the previous word, but do not move the cursor.'''
self.l_buffer.upcase_word()
def downcase_word(self, e): # (M-l)
'''Lowercase the current (or following) word. With a negative
argument, lowercase the previous word, but do not move the cursor.'''
self.l_buffer.downcase_word()
def capitalize_word(self, e): # (M-c)
'''Capitalize the current (or following) word. With a negative
argument, capitalize the previous word, but do not move the cursor.'''
self.l_buffer.capitalize_word()
########
def clear_screen(self, e): # (C-l)
'''Clear the screen and redraw the current line, leaving the current
line at the top of the screen.'''
self.console.page()
def redraw_current_line(self, e): # ()
'''Refresh the current line. By default, this is unbound.'''
pass
def accept_line(self, e): # (Newline or Return)
'''Accept the line regardless of where the cursor is. If this line
is non-empty, it may be added to the history list for future recall
with add_history(). If this line is a modified history line, the
history line is restored to its original state.'''
return True
def delete_char(self, e): # (C-d)
'''Delete the character at point. If point is at the beginning of
the line, there are no characters in the line, and the last
character typed was not bound to delete-char, then return EOF.'''
self.l_buffer.delete_char(self.argument_reset)
def backward_delete_char(self, e): # (Rubout)
'''Delete the character behind the cursor. A numeric argument means
to kill the characters instead of deleting them.'''
self.l_buffer.backward_delete_char(self.argument_reset)
def backward_delete_word(self, e): # (Control-Rubout)
'''Delete the character behind the cursor. A numeric argument means
to kill the characters instead of deleting them.'''
self.l_buffer.backward_delete_word(self.argument_reset)
def forward_delete_word(self, e): # (Control-Delete)
'''Delete the character behind the cursor. A numeric argument means
to kill the characters instead of deleting them.'''
self.l_buffer.forward_delete_word(self.argument_reset)
def delete_horizontal_space(self, e): # ()
'''Delete all spaces and tabs around point. By default, this is unbound. '''
self.l_buffer.delete_horizontal_space()
def self_insert(self, e): # (a, b, A, 1, !, ...)
'''Insert yourself. '''
if e.char and ord(e.char)!=0: #don't insert null character in buffer, can happen with dead keys.
self.insert_text(e.char)
# Paste from clipboard
def paste(self,e):
'''Paste windows clipboard.
Assume single line strip other lines and end of line markers and trailing spaces''' #(Control-v)
if self.enable_win32_clipboard:
txt=clipboard.get_clipboard_text_and_convert(False)
txt=txt.split("\n")[0].strip("\r").strip("\n")
log("paste: >%s<"%map(ord,txt))
self.insert_text(txt)
def paste_mulitline_code(self,e):
'''Paste windows clipboard as multiline code.
Removes any empty lines in the code'''
reg=re.compile("\r?\n")
if self.enable_win32_clipboard:
txt=clipboard.get_clipboard_text_and_convert(False)
t=reg.split(txt)
t=[row for row in t if row.strip()!=""] #remove empty lines
if t!=[""]:
self.insert_text(t[0])
self.add_history(self.l_buffer.copy())
self.paste_line_buffer=t[1:]
log("multi: %s"%self.paste_line_buffer)
return True
else:
return False
def ipython_paste(self,e):
'''Paste windows clipboard. If enable_ipython_paste_list_of_lists is
True then try to convert tabseparated data to repr of list of lists or
repr of array.
If enable_ipython_paste_for_paths==True then change \\ to / and spaces to \space'''
if self.enable_win32_clipboard:
txt=clipboard.get_clipboard_text_and_convert(
self.enable_ipython_paste_list_of_lists)
if self.enable_ipython_paste_for_paths:
if len(txt)<300 and ("\t" not in txt) and ("\n" not in txt):
txt=txt.replace("\\","/").replace(" ",r"\ ")
self.insert_text(txt)
def copy_region_to_clipboard(self, e): # ()
'''Copy the text in the region to the windows clipboard.'''
self.l_buffer.copy_region_to_clipboard()
def copy_selection_to_clipboard(self, e): # ()
'''Copy the text in the region to the windows clipboard.'''
self.l_buffer.copy_selection_to_clipboard()
def cut_selection_to_clipboard(self, e): # ()
'''Copy the text in the region to the windows clipboard.'''
self.l_buffer.cut_selection_to_clipboard()
def dump_functions(self, e): # ()
'''Print all of the functions and their key bindings to the Readline
output stream. If a numeric argument is supplied, the output is
formatted in such a way that it can be made part of an inputrc
file. This command is unbound by default.'''
print
txt="\n".join(self.rl_settings_to_string())
print txt
self._print_prompt()
def commonprefix(m):
"Given a list of pathnames, returns the longest common leading component"
if not m: return ''
prefix = m[0]
for item in m:
for i in range(len(prefix)):
if prefix[:i+1].lower() != item[:i+1].lower():
prefix = prefix[:i]
if i == 0: return ''
break
return prefix
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