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a6e5201ff3
This is 'the big one', which touches every file so that it all conforms to the given standard.
341 lines
11 KiB
Python
341 lines
11 KiB
Python
# This file is part of beets.
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# Copyright 2015, winters jean-marie.
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# Copyright 2020, Justin Mayer <https://justinmayer.com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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"""This plugin generates tab completions for Beets commands for the Fish shell
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<https://fishshell.com/>, including completions for Beets commands, plugin
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commands, and option flags. Also generated are completions for all the album
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and track fields, suggesting for example `genre:` or `album:` when querying the
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Beets database. Completions for the *values* of those fields are not generated
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by default but can be added via the `-e` / `--extravalues` flag. For example:
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`beet fish -e genre -e albumartist`
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"""
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import os
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from operator import attrgetter
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from beets import library, ui
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from beets.plugins import BeetsPlugin
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from beets.ui import commands
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BL_NEED2 = """complete -c beet -n '__fish_beet_needs_command' {} {}\n"""
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BL_USE3 = """complete -c beet -n '__fish_beet_using_command {}' {} {}\n"""
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BL_SUBS = """complete -c beet -n '__fish_at_level {} ""' {} {}\n"""
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BL_EXTRA3 = """complete -c beet -n '__fish_beet_use_extra {}' {} {}\n"""
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HEAD = """
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function __fish_beet_needs_command
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set cmd (commandline -opc)
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if test (count $cmd) -eq 1
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return 0
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end
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return 1
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end
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function __fish_beet_using_command
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set cmd (commandline -opc)
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set needle (count $cmd)
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if test $needle -gt 1
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if begin test $argv[1] = $cmd[2];
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and not contains -- $cmd[$needle] $FIELDS; end
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return 0
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end
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end
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return 1
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end
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function __fish_beet_use_extra
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set cmd (commandline -opc)
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set needle (count $cmd)
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if test $argv[2] = $cmd[$needle]
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return 0
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end
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return 1
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end
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"""
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class FishPlugin(BeetsPlugin):
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def commands(self):
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cmd = ui.Subcommand("fish", help="generate Fish shell tab completions")
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cmd.func = self.run
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cmd.parser.add_option(
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"-f",
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"--noFields",
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action="store_true",
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default=False,
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help="omit album/track field completions",
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)
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cmd.parser.add_option(
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"-e",
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"--extravalues",
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action="append",
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type="choice",
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choices=library.Item.all_keys() + library.Album.all_keys(),
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help="include specified field *values* in completions",
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)
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cmd.parser.add_option(
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"-o",
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"--output",
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default="~/.config/fish/completions/beet.fish",
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help="where to save the script. default: "
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"~/.config/fish/completions",
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)
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return [cmd]
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def run(self, lib, opts, args):
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# Gather the commands from Beets core and its plugins.
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# Collect the album and track fields.
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# If specified, also collect the values for these fields.
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# Make a giant string of all the above, formatted in a way that
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# allows Fish to do tab completion for the `beet` command.
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completion_file_path = os.path.expanduser(opts.output)
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completion_dir = os.path.dirname(completion_file_path)
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if completion_dir != "":
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os.makedirs(completion_dir, exist_ok=True)
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nobasicfields = opts.noFields # Do not complete for album/track fields
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extravalues = opts.extravalues # e.g., Also complete artists names
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beetcmds = sorted(
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(commands.default_commands + commands.plugins.commands()),
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key=attrgetter("name"),
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)
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fields = sorted(set(library.Album.all_keys() + library.Item.all_keys()))
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# Collect commands, their aliases, and their help text
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cmd_names_help = []
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for cmd in beetcmds:
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names = list(cmd.aliases)
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names.append(cmd.name)
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for name in names:
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cmd_names_help.append((name, cmd.help))
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# Concatenate the string
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totstring = HEAD + "\n"
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totstring += get_cmds_list([name[0] for name in cmd_names_help])
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totstring += "" if nobasicfields else get_standard_fields(fields)
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totstring += get_extravalues(lib, extravalues) if extravalues else ""
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totstring += (
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"\n"
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+ "# ====== {} =====".format("setup basic beet completion")
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+ "\n" * 2
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)
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totstring += get_basic_beet_options()
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totstring += (
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"\n"
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+ "# ====== {} =====".format(
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"setup field completion for subcommands"
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)
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+ "\n"
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)
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totstring += get_subcommands(cmd_names_help, nobasicfields, extravalues)
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# Set up completion for all the command options
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totstring += get_all_commands(beetcmds)
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with open(completion_file_path, "w") as fish_file:
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fish_file.write(totstring)
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def _escape(name):
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# Escape ? in fish
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if name == "?":
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name = "\\" + name
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return name
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def get_cmds_list(cmds_names):
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# Make a list of all Beets core & plugin commands
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substr = ""
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substr += "set CMDS " + " ".join(cmds_names) + ("\n" * 2)
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return substr
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def get_standard_fields(fields):
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# Make a list of album/track fields and append with ':'
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fields = (field + ":" for field in fields)
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substr = ""
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substr += "set FIELDS " + " ".join(fields) + ("\n" * 2)
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return substr
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def get_extravalues(lib, extravalues):
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# Make a list of all values from an album/track field.
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# 'beet ls albumartist: <TAB>' yields completions for ABBA, Beatles, etc.
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word = ""
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values_set = get_set_of_values_for_field(lib, extravalues)
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for fld in extravalues:
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extraname = fld.upper() + "S"
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word += (
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"set "
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+ extraname
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+ " "
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+ " ".join(sorted(values_set[fld]))
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+ ("\n" * 2)
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)
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return word
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def get_set_of_values_for_field(lib, fields):
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# Get unique values from a specified album/track field
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fields_dict = {}
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for each in fields:
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fields_dict[each] = set()
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for item in lib.items():
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for field in fields:
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fields_dict[field].add(wrap(item[field]))
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return fields_dict
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def get_basic_beet_options():
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word = (
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BL_NEED2.format("-l format-item", "-f -d 'print with custom format'")
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+ BL_NEED2.format("-l format-album", "-f -d 'print with custom format'")
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+ BL_NEED2.format(
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"-s l -l library", "-f -r -d 'library database file to use'"
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)
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+ BL_NEED2.format(
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"-s d -l directory", "-f -r -d 'destination music directory'"
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)
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+ BL_NEED2.format(
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"-s v -l verbose", "-f -d 'print debugging information'"
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)
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+ BL_NEED2.format(
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"-s c -l config", "-f -r -d 'path to configuration file'"
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)
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+ BL_NEED2.format(
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"-s h -l help", "-f -d 'print this help message and exit'"
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)
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)
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return word
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def get_subcommands(cmd_name_and_help, nobasicfields, extravalues):
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# Formatting for Fish to complete our fields/values
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word = ""
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for cmdname, cmdhelp in cmd_name_and_help:
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cmdname = _escape(cmdname)
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word += (
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"\n"
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+ "# ------ {} -------".format("fieldsetups for " + cmdname)
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+ "\n"
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)
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word += BL_NEED2.format(
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("-a " + cmdname), ("-f " + "-d " + wrap(clean_whitespace(cmdhelp)))
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)
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if nobasicfields is False:
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word += BL_USE3.format(
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cmdname,
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("-a " + wrap("$FIELDS")),
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("-f " + "-d " + wrap("fieldname")),
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)
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if extravalues:
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for f in extravalues:
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setvar = wrap("$" + f.upper() + "S")
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word += (
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" ".join(
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BL_EXTRA3.format(
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(cmdname + " " + f + ":"),
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("-f " + "-A " + "-a " + setvar),
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("-d " + wrap(f)),
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).split()
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)
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+ "\n"
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)
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return word
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def get_all_commands(beetcmds):
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# Formatting for Fish to complete command options
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word = ""
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for cmd in beetcmds:
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names = list(cmd.aliases)
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names.append(cmd.name)
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for name in names:
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name = _escape(name)
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word += "\n"
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word += (
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("\n" * 2)
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+ "# ====== {} =====".format("completions for " + name)
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+ "\n"
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)
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for option in cmd.parser._get_all_options()[1:]:
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cmd_l = (
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(" -l " + option._long_opts[0].replace("--", ""))
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if option._long_opts
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else ""
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)
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cmd_s = (
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(" -s " + option._short_opts[0].replace("-", ""))
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if option._short_opts
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else ""
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)
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cmd_need_arg = " -r " if option.nargs in [1] else ""
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cmd_helpstr = (
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(" -d " + wrap(" ".join(option.help.split())))
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if option.help
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else ""
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)
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cmd_arglist = (
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(" -a " + wrap(" ".join(option.choices)))
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if option.choices
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else ""
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)
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word += (
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" ".join(
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BL_USE3.format(
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name,
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(
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cmd_need_arg
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+ cmd_s
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+ cmd_l
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+ " -f "
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+ cmd_arglist
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),
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cmd_helpstr,
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).split()
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)
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+ "\n"
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)
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word = word + " ".join(
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BL_USE3.format(
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name,
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("-s " + "h " + "-l " + "help" + " -f "),
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("-d " + wrap("print help") + "\n"),
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).split()
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)
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return word
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def clean_whitespace(word):
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# Remove excess whitespace and tabs in a string
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return " ".join(word.split())
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def wrap(word):
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# Need " or ' around strings but watch out if they're in the string
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sptoken = '"'
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if ('"') in word and ("'") in word:
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word.replace('"', sptoken)
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return '"' + word + '"'
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tok = '"' if "'" in word else "'"
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return tok + word + tok
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