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Diffstat (limited to 'src/keyboard.py')
| -rwxr-xr-x | src/keyboard.py | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/src/keyboard.py b/src/keyboard.py deleted file mode 100755 index ccf9e752..00000000 --- a/src/keyboard.py +++ /dev/null @@ -1,168 +0,0 @@ -#!/usr/bin/env python3 -# Copyright 2010-2011 Florent Le Coz <louiz@louiz.org> -# -# This file is part of Poezio. -# -# Poezio is free software: you can redistribute it and/or modify -# it under the terms of the zlib license. See the COPYING file. - -""" -Functions to interact with the keyboard -Mainly, read keys entered and return a string (most -of the time ONE char, but may be longer if it's a keyboard -shortcut, like ^A, M-a or KEY_RESIZE) -""" - -import curses -import curses.ascii -import logging -log = logging.getLogger(__name__) - -# A callback that will handle the next key entered by the user. For -# example if the user presses Ctrl+j, we set a callbacks, and the -# next key pressed by the user will be passed to this callback -# instead of the normal process of executing global keybard -# shortcuts or inserting text in the current output. The callback -# is always reset to None afterwards (to resume the normal -# processing of keys) -continuation_keys_callback = None - -def get_next_byte(s): - """ - Read the next byte of the utf-8 char - ncurses seems to return a string of the byte - encoded in latin-1. So what we get is NOT what we typed - unless we do the conversion… - """ - try: - c = s.getkey() - except: - return (None, None) - if len(c) >= 4: - return (None, c) - return (ord(c), c.encode('latin-1')) # returns a number and a bytes object - -def get_char_list(s): - ret_list = [] - while True: - try: - key = s.get_wch() - except curses.error: - # No input, this means a timeout occurs. - return ret_list - except ValueError: # invalid input - log.debug('Invalid character entered.') - return ret_list - # Set to non-blocking. We try to read more bytes. If there are no - # more data to read, it will immediately timeout and return with the - # data we have so far - s.timeout(0) - if isinstance(key, int): - ret_list.append(curses.keyname(key).decode()) - else: - if curses.ascii.isctrl(key): - key = curses.unctrl(key).decode() - # Here special cases for alt keys, where we get a ^[ and then a second char - if key == '^[': - try: - part = s.get_wch() - if part == '[': - # CTRL+arrow and meta+arrow keys have a long format - part += s.get_wch() + s.get_wch() + s.get_wch() + s.get_wch() - except curses.error: - pass - except ValueError: # invalid input - log.debug('Invalid character entered.') - else: - key = 'M-%s' % part - # and an even more special case for keys like - # ctrl+arrows, where we get ^[, then [, then a third - # char. - if key == 'M-[': - try: - part = s.get_wch() - except curses.error: - pass - except ValueError: - log.debug('Invalid character entered.') - else: - key = '%s-%s' % (key, part) - if key == '\x7f' or key == '\x08': - key = '^?' - elif key == '\r': - key = '^M' - ret_list.append(key) - -class Keyboard(object): - def __init__(self): - self.escape = False - - def escape_next_key(self): - """ - The next key pressed by the user should be escaped. e.g. if the user - presses ^N, keyboard.get_user_input() will return ["^", "N"] instead - of ["^N"]. This will display ^N in the input, instead of - interpreting the key binding. - """ - self.escape = True - - def get_user_input(self, s): - """ - Returns a list of all the available characters to read (for example it - may contain a whole text if there’s some lag, or the user pasted text, - or the user types really really fast). Also it can return None, meaning - that it’s time to do some other checks (because this function is - blocking, we need to get out of it every now and then even if nothing - was entered). - """ - # Disable the timeout - s.timeout(-1) - ret_list = get_char_list(s) - if not ret_list: - return ret_list - if len(ret_list) != 1: - if ret_list[-1] == '^M': - ret_list.pop(-1) - ret_list = [char if char != '^M' else '^J' for char in ret_list] - if self.escape: - # Modify the first char of the list into its escaped version (i.e one or more char) - key = ret_list.pop(0) - for char in key[::-1]: - ret_list.insert(0, char) - self.escape = False - return ret_list - -if __name__ == '__main__': - import sys - keyboard = Keyboard() - s = curses.initscr() - curses.noecho() - curses.cbreak() - s.keypad(1) - curses.start_color() - curses.use_default_colors() - curses.init_pair(1, 2, -1) - s.attron(curses.A_BOLD | curses.color_pair(1)) - s.addstr('Type Ctrl-c to close\n') - s.attroff(curses.A_BOLD | curses.color_pair(1)) - - pressed_chars = [] - while True: - - try: - chars = keyboard.get_user_input(s) - for char in chars if chars else '': - s.addstr('%s ' % (char)) - pressed_chars.append(chars) - - except KeyboardInterrupt: - break - curses.echo() - curses.cbreak() - curses.curs_set(1) - curses.endwin() - for char_list in pressed_chars: - if char_list: - print(' '.join((char for char in char_list)), end=' ') - print() - sys.exit(0) |