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# The MIT License
#
# Copyright (c) 2009-2015 the bpython authors.
# Copyright (c) 2015-2020 Sebastian Ramacher
#
# 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.
import os
import sys
import locale
from configparser import ConfigParser
from itertools import chain
from pathlib import Path
from xdg import BaseDirectory
from .autocomplete import AutocompleteModes
default_completion = AutocompleteModes.SIMPLE
class Struct:
"""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, "│─└┘┌┐"))
def get_config_home():
"""Returns the base directory for bpython's configuration files."""
return Path(BaseDirectory.xdg_config_home) / "bpython"
def default_config_path():
"""Returns bpython's default configuration file path."""
return get_config_home() / "config"
def default_editor():
"""Returns the default editor."""
return os.environ.get("VISUAL", os.environ.get("EDITOR", "vi"))
def fill_config_with_default_values(config, default_values):
for section in default_values.keys():
if not config.has_section(section):
config.add_section(section)
for (opt, val) in default_values[section].items():
if not config.has_option(section, opt):
config.set(section, opt, f"{val}")
def loadini(struct, config_path):
"""Loads .ini configuration file and stores its values in struct"""
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": default_editor(),
"flush_output": True,
"import_completion_skiplist": ":".join(
(
# version tracking
".git",
".svn",
".hg"
# XDG
".config",
".local",
".share",
# nodejs
10BC0
"node_modules",
# PlayOnLinux
"PlayOnLinux's virtual drives",
# wine
"dosdevices",
# Python byte code cache
"__pycache__",
)
),
"highlight_show_source": True,
"hist_duplicates": True,
"hist_file": "~/.pythonhist",
"hist_length": 1000,
"paste_time": 0.02,
"pastebin_confirm": True,
"pastebin_expiry": "1week",
"pastebin_helper": "",
"pastebin_url": "https://bpaste.net",
"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",
"redo": "C-g",
"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 = {
value: key for (key, value) in defaults["keyboard"].items()
}
fill_config_with_default_values(config, defaults)
try:
config.read(config_path)
except UnicodeDecodeError as e:
sys.stderr.write(
"Error: Unable to parse config file at '{}' due to an "
"encoding issue. Please make sure to fix the encoding "
"of the file or remove it and then try again.\n".format(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 = Path(config_path).absolute()
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.import_completion_skiplist = config.get(
"general", "import_completion_skiplist"
).split(":")
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.redo_key = get_key_no_doublebind("redo")
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_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 = AutocompleteModes.from_string(
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"
)
struct.unicode_box = config.getboolean("general", "unicode_box")
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()
path = get_config_home() / f"{color_scheme_name}.theme"
try:
load_theme(struct, path, struct.color_scheme, default_colors)
except OSError:
sys.stderr.write(
f"Could not load theme '{color_scheme_name}' from {path}.\n"
)
sys.exit(1)
# expand path of history file
struct.hist_file = Path(struct.hist_file).expanduser()
# verify completion mode
if struct.autocomplete_mode is None:
struct.autocomplete_mode = default_completion
# set box drawing characters
if struct.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) as f:
theme.read_file(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
30F2
against default theme to see if all values are defined
for k, v in default_colors.items():
if k not in colors:
colors[k] = v