bpython/bpython/config.py at master · optionalg/bpython · GitHub

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# encoding: utf-8

from __future__ import unicode_literals, absolute_import

import os

import sys

import locale

from itertools import chain

from six import iterkeys, iteritems

from six.moves.configparser import ConfigParser

from .autocomplete import SIMPLE as default_completion, ALL_MODES

from .keys import cli_key_dispatch as cli_key_dispatch

class Struct(object):

"""Simple class for instantiating objects we can add arbitrary attributes

to and use for various arbitrary things."""

def getpreferredencoding():

"""Get the user's preferred encoding."""

return locale.getpreferredencoding() or sys.getdefaultencoding()

def can_encode(c):

try:

c.encode(getpreferredencoding())

return True

except UnicodeEncodeError:

return False

def supports_box_chars():

"""Check if the encoding supports Unicode box characters."""

return all(map(can_encode, u'│─└┘┌┐'))

def get_config_home():

"""Returns the base directory for bpython's configuration files."""

xdg_config_home = os.environ.get('XDG_CONFIG_HOME', '~/.config')

return os.path.join(xdg_config_home, 'bpython')

def default_config_path():

"""Returns bpython's default configuration file path."""

return os.path.join(get_config_home(), 'config')

def fill_config_with_default_values(config, default_values):

for section in iterkeys(default_values):

if not config.has_section(section):

config.add_section(section)

for (opt, val) in iteritems(default_values[section]):

if not config.has_option(section, opt):

config.set(section, opt, '%s' % (val, ))

def loadini(struct, configfile):

"""Loads .ini configuration file and stores its values in struct"""

config_path = os.path.expanduser(configfile)

config = ConfigParser()

defaults = {

'general': {

'arg_spec': True,

'auto_display_list': True,

'autocomplete_mode': default_completion,

'color_scheme': 'default',

'complete_magic_methods': True,

'dedent_after': 1,

'default_autoreload': False,

'editor': os.environ.get('VISUAL', os.environ.get('EDITOR', 'vi')),

'flush_output': True,

'highlight_show_source': True,

'hist_duplicates': True,

'hist_file': '~/.pythonhist',

'hist_length': 100,

'paste_time': 0.02,

'pastebin_confirm': True,

'pastebin_expiry': '1week',

'pastebin_helper': '',

'pastebin_removal_url': 'https://bpaste.net/remove/$removal_id',

'pastebin_show_url': 'https://bpaste.net/show/$paste_id',

'pastebin_url': 'https://bpaste.net/json/new',

'save_append_py': False,

'single_undo_time': 1.0,

'syntax': True,

'tab_length': 4,

'unicode_box': True

'keyboard': {

'backspace': 'C-h',

'beginning_of_line': 'C-a',

'clear_line': 'C-u',

'clear_screen': 'C-l',

'clear_word': 'C-w',

'copy_clipboard': 'F10',

'cut_to_buffer': 'C-k',

'delete': 'C-d',

'down_one_line': 'C-n',

'edit_config': 'F3',

'edit_current_block': 'C-x',

'end_of_line': 'C-e',

'exit': '',

'external_editor': 'F7',

'help': 'F1',

'incremental_search': 'M-s',

'last_output': 'F9',

'left': 'C-b',

'pastebin': 'F8',

'reimport': 'F6',

'reverse_incremental_search': 'M-r',

'right': 'C-f',

'save': 'C-s',

'search': 'C-o',

'show_source': 'F2',

'suspend': 'C-z',

'toggle_file_watch': 'F5',

'transpose_chars': 'C-t',

'undo': 'C-r',

'up_one_line': 'C-p',

'yank_from_buffer': 'C-y'

'cli': {

'suggestion_width': 0.8,

'trim_prompts': False,

'curtsies': {

'list_above': False,

'right_arrow_completion': True,

}}

default_keys_to_commands = dict((value, key) for (key, value)

in iteritems(defaults['keyboard']))

fill_config_with_default_values(config, defaults)

if not config.read(config_path):

# No config file. If the user has it in the old place then complain

if os.path.isfile(os.path.expanduser('~/.bpython.ini')):

sys.stderr.write("Error: It seems that you have a config file at "

"~/.bpython.ini. Please move your config file to "

"%s\n" % default_config_path())

sys.exit(1)

def get_key_no_doublebind(command):

default_commands_to_keys = defaults['keyboard']

requested_key = config.get('keyboard', command)

try:

default_command = default_keys_to_commands[requested_key]

if (default_commands_to_keys[default_command] ==

config.get('keyboard', default_command)):

setattr(struct, '%s_key' % default_command, '')

except KeyError:

pass

return requested_key

struct.config_path = config_path

struct.dedent_after = config.getint('general', 'dedent_after')

struct.tab_length = config.getint('general', 'tab_length')

struct.auto_display_list = config.getboolean('general',

'auto_display_list')

struct.syntax = config.getboolean('general', 'syntax')

struct.arg_spec = config.getboolean('general', 'arg_spec')

struct.paste_time = config.getfloat('general', 'paste_time')

struct.single_undo_time = config.getfloat('general', 'single_undo_time')

struct.highlight_show_source = config.getboolean('general',

'highlight_show_source')

struct.hist_file = config.get('general', 'hist_file')

struct.editor = config.get('general', 'editor')

struct.hist_length = config.getint('general', 'hist_length')

struct.hist_duplicates = config.getboolean('general', 'hist_duplicates')

struct.flush_output = config.getboolean('general', 'flush_output')

struct.default_autoreload = config.getboolean('general', 'default_autoreload')

struct.pastebin_key = get_key_no_doublebind('pastebin')

struct.copy_clipboard_key = get_key_no_doublebind('copy_clipboard')

struct.save_key = get_key_no_doublebind('save')

struct.search_key = get_key_no_doublebind('search')

struct.show_source_key = get_key_no_doublebind('show_source')

struct.suspend_key = get_key_no_doublebind('suspend')

struct.toggle_file_watch_key = get_key_no_doublebind('toggle_file_watch')

struct.undo_key = get_key_no_doublebind('undo')

struct.reimport_key = get_key_no_doublebind('reimport')

struct.reverse_incremental_search_key = get_key_no_doublebind(

'reverse_incremental_search')

struct.incremental_search_key = get_key_no_doublebind('incremental_search')

struct.up_one_line_key = get_key_no_doublebind('up_one_line')

struct.down_one_line_key = get_key_no_doublebind('down_one_line')

struct.cut_to_buffer_key = get_key_no_doublebind('cut_to_buffer')

struct.yank_from_buffer_key = get_key_no_doublebind('yank_from_buffer')

struct.clear_word_key = get_key_no_doublebind('clear_word')

struct.backspace_key = get_key_no_doublebind('backspace')

struct.clear_line_key = get_key_no_doublebind('clear_line')

struct.clear_screen_key = get_key_no_doublebind('clear_screen')

struct.delete_key = get_key_no_doublebind('delete')

struct.left_key = get_key_no_doublebind('left')

struct.right_key = get_key_no_doublebind('right')

struct.end_of_line_key = get_key_no_doublebind('end_of_line')

struct.beginning_of_line_key = get_key_no_doublebind('beginning_of_line')

struct.transpose_chars_key = get_key_no_doublebind('transpose_chars')

struct.exit_key = get_key_no_doublebind('exit')

struct.last_output_key = get_key_no_doublebind('last_output')

struct.edit_config_key = get_key_no_doublebind('edit_config')

struct.edit_current_block_key = get_key_no_doublebind('edit_current_block')

struct.external_editor_key = get_key_no_doublebind('external_editor')

struct.help_key = get_key_no_doublebind('help')

struct.pastebin_confirm = config.getboolean('general', 'pastebin_confirm')

struct.pastebin_url = config.get('general', 'pastebin_url')

struct.pastebin_show_url = config.get('general', 'pastebin_show_url')

struct.pastebin_removal_url = config.get('general', 'pastebin_removal_url')

struct.pastebin_expiry = config.get('general', 'pastebin_expiry')

struct.pastebin_helper = config.get('general', 'pastebin_helper')

struct.cli_suggestion_width = config.getfloat('cli',

'suggestion_width')

struct.cli_trim_prompts = config.getboolean('cli',

'trim_prompts')

struct.complete_magic_methods = config.getboolean('general',

'complete_magic_methods')

struct.autocomplete_mode = config.get('general', 'autocomplete_mode')

struct.save_append_py = config.getboolean('general', 'save_append_py')

struct.curtsies_list_above = config.getboolean('curtsies', 'list_above')

struct.curtsies_right_arrow_completion = \

config.getboolean('curtsies', 'right_arrow_completion')

color_scheme_name = config.get('general', 'color_scheme')

default_colors = {

'keyword': 'y',

'name': 'c',

'comment': 'b',

'string': 'm',

'error': 'r',

'number': 'G',

'operator': 'Y',

'punctuation': 'y',

'token': 'C',

'background': 'd',

'output': 'w',

'main': 'c',

'paren': 'R',

'prompt': 'c',

'prompt_more': 'g',

'right_arrow_suggestion': 'K',

}

if color_scheme_name == 'default':

struct.color_scheme = default_colors

else:

struct.color_scheme = dict()

theme_filename = color_scheme_name + '.theme'

path = os.path.expanduser(os.path.join(get_config_home(),

theme_filename))

try:

load_theme(struct, path, struct.color_scheme, default_colors)

except EnvironmentError:

sys.stderr.write("Could not load theme '%s'.\n" %

(color_scheme_name, ))

sys.exit(1)

# expand path of history file

struct.hist_file = os.path.expanduser(struct.hist_file)

# verify completion mode

if struct.autocomplete_mode not in ALL_MODES:

struct.autocomplete_mode = default_completion

# set box drawing characters

if config.getboolean('general', 'unicode_box') and supports_box_chars():

struct.left_border = '│'

struct.right_border = '│'

struct.top_border = '─'

struct.bottom_border = '─'

struct.left_bottom_corner = '└'

struct.right_bottom_corner = '┘'

struct.left_top_corner = '┌'

struct.right_top_corner = '┐'

else:

struct.left_border = '|'

struct.right_border = '|'

struct.top_border = '-'

struct.bottom_border = '-'

struct.left_bottom_corner = '+'

struct.right_bottom_corner = '+'

struct.left_top_corner = '+'

struct.right_top_corner = '+'

def load_theme(struct, path, colors, default_colors):

theme = ConfigParser()

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

theme.readfp(f)

for k, v in chain(theme.items('syntax'), theme.items('interface')):

if theme.has_option('syntax', k):

colors[k] = theme.get('syntax', k)

else:

colors[k] = theme.get('interface', k)

# Check against default theme to see if all values are defined

for k, v in iteritems(default_colors):

if k not in colors:

colors[k] = v

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