691 lines
23 KiB
Python
691 lines
23 KiB
Python
#!/usr/bin/env python3
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# License: GPLv3 Copyright: 2018, Kovid Goyal <kovid at kovidgoyal.net>
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import os
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import shlex
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import sys
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from typing import (
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Any, Callable, Dict, Iterable, Iterator, List, Optional, Sequence, Tuple,
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Union
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)
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from kittens.runner import (
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all_kitten_names, get_kitten_cli_docs, get_kitten_completer
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)
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from .cli import (
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OptionDict, OptionSpecSeq, options_for_completion, parse_option_spec,
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prettify
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)
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from .fast_data_types import truncate_point_for_length, wcswidth
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from .rc.base import all_command_names, command_for_name
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from .shell import options_for_cmd
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from .types import run_once
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from .utils import screen_size_function
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'''
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To add completion for a new shell, you need to:
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1) Add an entry to completion scripts for your shell, this is
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a simple function that calls kitty's completion code and passes the
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results to the shell's completion system. This can be output by
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`kitty +complete setup shell_name` and its output goes into
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your shell's rc file.
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2) Add an input_parser function, this takes the input from
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the shell for the text being completed and returns a list of words
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and a boolean indicating if we are on a new word or not. This
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is passed to kitty's completion system.
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3) An output_serializer function that is responsible for
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taking the results from kitty's completion system and converting
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them into something your shell will understand.
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'''
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parsers: Dict[str, Callable] = {}
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serializers: Dict[str, Callable] = {}
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class MatchGroup:
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def __init__(
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self, x: Union[Dict[str, str], Iterable[str]],
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trailing_space: bool = True,
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is_files: bool = False,
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word_transforms: Optional[Dict[str, str]] = None,
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):
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self.mdict = x if isinstance(x, dict) else dict.fromkeys(x, '')
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self.trailing_space = trailing_space
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self.is_files = is_files
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self.word_transforms = word_transforms or {}
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def __iter__(self) -> Iterator[str]:
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return iter(self.mdict)
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def __bool__(self) -> bool:
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return bool(self.mdict)
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def transformed_words(self) -> Iterator[str]:
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for w in self:
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yield self.word_transforms.get(w, w)
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def transformed_items(self) -> Iterator[Tuple[str, str]]:
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for w, desc in self.items():
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yield self.word_transforms.get(w, w), desc
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def items(self) -> Iterator[Tuple[str, str]]:
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return iter(self.mdict.items())
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def values(self) -> Iterator[str]:
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return iter(self.mdict.values())
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def debug(*a: Any, **kw: Any) -> None:
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from kittens.tui.loop import debug_write
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debug_write(*a, **kw)
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class Delegate:
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def __init__(self, words: Sequence[str] = (), pos: int = -1, new_word: bool = False):
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self.words: Sequence[str] = words
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self.pos = pos
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self.num_of_unknown_args = len(words) - pos
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self.new_word = new_word
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def __bool__(self) -> bool:
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return self.pos > -1 and self.num_of_unknown_args > 0
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@property
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def precommand(self) -> str:
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try:
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return self.words[self.pos]
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except IndexError:
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return ''
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class Completions:
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def __init__(self) -> None:
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self.match_groups: Dict[str, MatchGroup] = {}
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self.delegate: Delegate = Delegate()
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def add_match_group(
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self, name: str, x: Union[Dict[str, str], Iterable[str]],
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trailing_space: bool = True,
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is_files: bool = False,
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word_transforms: Optional[Dict[str, str]] = None
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) -> MatchGroup:
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self.match_groups[name] = m = MatchGroup(x, trailing_space, is_files, word_transforms)
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return m
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@run_once
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def remote_control_command_names() -> Tuple[str, ...]:
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return tuple(sorted(x.replace('_', '-') for x in all_command_names()))
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# Shell specific code {{{
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completion_scripts = {
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'zsh': '''#compdef kitty
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_kitty() {
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local src
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# Send all words up to the word the cursor is currently on
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src=$(printf "%s\n" "${(@)words[1,$CURRENT]}" | kitty +complete zsh)
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if [[ $? == 0 ]]; then
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eval ${src}
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fi
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}
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compdef _kitty kitty
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''',
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'bash': '''
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_kitty_completions() {
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local src
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local limit
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# Send all words up to the word the cursor is currently on
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let limit=1+$COMP_CWORD
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src=$(printf "%s\n" "${COMP_WORDS[@]: 0:$limit}" | kitty +complete bash)
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if [[ $? == 0 ]]; then
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eval ${src}
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fi
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}
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complete -o nospace -F _kitty_completions kitty
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''',
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'fish': '''
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function __kitty_completions
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# Send all words up to the one before the cursor
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commandline -cop | kitty +complete fish
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end
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complete -f -c kitty -a "(__kitty_completions)"
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''',
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'fish2': '''
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if functions -q _ksi_completions
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complete -f -c kitty -a "(_ksi_completions)"
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else
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complete -f -c kitty -a "(commandline -cop | kitty +complete fish)"
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end
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''',
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}
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ParseResult = Tuple[List[str], bool]
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ParserFunc = Callable[[str], ParseResult]
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SerializerFunc = Callable[[Completions], str]
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def input_parser(func: ParserFunc) -> ParserFunc:
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name = func.__name__.split('_')[0]
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parsers[name] = func
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return func
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def output_serializer(func: SerializerFunc) -> SerializerFunc:
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name = func.__name__.split('_')[0]
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serializers[name] = func
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return func
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@input_parser
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def zsh_input_parser(data: str) -> ParseResult:
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new_word = data.endswith('\n\n')
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words = data.rstrip().splitlines()
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return words, new_word
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@input_parser
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def bash_input_parser(data: str) -> ParseResult:
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new_word = data.endswith('\n\n')
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words = data.rstrip().splitlines()
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return words, new_word
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@input_parser
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def fish_input_parser(data: str) -> ParseResult:
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return data.rstrip().splitlines(), True
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@input_parser
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def fish2_input_parser(data: str) -> ParseResult:
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return bash_input_parser(data)
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@output_serializer
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def zsh_output_serializer(ans: Completions) -> str:
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lines = []
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screen = screen_size_function(sys.stderr.fileno())()
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width = screen.cols
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def fmt_desc(word: str, desc: str, max_word_len: int) -> Iterator[str]:
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if not desc:
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yield word
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return
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desc = prettify(desc.splitlines()[0])
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multiline = False
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if wcswidth(word) > max_word_len:
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max_desc_len = width - 2
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multiline = True
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else:
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word = word.ljust(max_word_len)
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max_desc_len = width - max_word_len - 3
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if wcswidth(desc) > max_desc_len:
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desc = desc[:truncate_point_for_length(desc, max_desc_len - 2)]
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desc += '…'
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if multiline:
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ans = f'{word}\n {desc}'
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else:
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ans = f'{word} {desc}'
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yield ans
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for description, matches in ans.match_groups.items():
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cmd = ['compadd', '-U', '-J', shlex.quote(description), '-X', shlex.quote('%B' + description + '%b')]
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if not matches.trailing_space:
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cmd += ['-S', '""']
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if matches.is_files:
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cmd.append('-f')
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allm = tuple(matches)
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if len(allm) > 1:
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common_prefix = os.path.commonprefix(allm)
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if common_prefix and '/' in common_prefix:
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common_prefix = os.path.dirname(common_prefix) + '/'
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cmd.extend(('-p', shlex.quote(common_prefix)))
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matches = MatchGroup({k[len(common_prefix):]: v for k, v in matches.items()})
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has_descriptions = any(matches.values())
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if has_descriptions or matches.word_transforms:
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lines.append('compdescriptions=(')
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sz = max(map(wcswidth, matches.transformed_words()))
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limit = min(16, sz)
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for word, desc in matches.transformed_items():
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lines.extend(map(shlex.quote, fmt_desc(word, desc, limit)))
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lines.append(')')
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if has_descriptions:
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cmd.append('-l')
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cmd.append('-d')
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cmd.append('compdescriptions')
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cmd.append('--')
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for word in matches:
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cmd.append(shlex.quote(word))
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lines.append(' '.join(cmd) + ';')
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if ans.delegate:
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if ans.delegate.num_of_unknown_args == 1 and not ans.delegate.new_word:
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lines.append('_command_names -e')
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elif ans.delegate.precommand:
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for i in range(ans.delegate.pos + 1):
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lines.append('shift words')
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lines.append('(( CURRENT-- ))')
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lines.append(f'_normal -p "{ans.delegate.precommand}"')
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result = '\n'.join(lines)
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# debug(result)
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return result
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@output_serializer
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def bash_output_serializer(ans: Completions) -> str:
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lines = []
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for description, matches in ans.match_groups.items():
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for word in matches:
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if matches.trailing_space:
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word += ' '
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lines.append(f'COMPREPLY+=({shlex.quote(word)})')
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# debug('\n'.join(lines))
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return '\n'.join(lines)
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@output_serializer
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def fish_output_serializer(ans: Completions) -> str:
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lines = []
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for description, matches in ans.match_groups.items():
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for word in matches:
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lines.append(word.replace('\n', ' '))
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# debug('\n'.join(lines))
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return '\n'.join(lines)
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@output_serializer
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def fish2_output_serializer(ans: Completions) -> str:
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lines = []
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for description, matches in ans.match_groups.items():
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for word, desc in matches.items():
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q = word
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if desc:
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q = f'{q}\t{desc}'
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lines.append(q.replace('\n', ' '))
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# debug('\n'.join(lines))
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return '\n'.join(lines)
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# }}}
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def completions_for_first_word(ans: Completions, prefix: str, entry_points: Iterable[str], namespaced_entry_points: Iterable[str]) -> None:
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cmds = ['@' + c for c in remote_control_command_names()]
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ans.add_match_group('Entry points', {
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k: '' for k in
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list(entry_points) + cmds + ['+' + k for k in namespaced_entry_points]
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if not prefix or k.startswith(prefix)
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})
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if prefix:
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ans.delegate = Delegate([prefix], 0)
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def kitty_cli_opts(ans: Completions, prefix: Optional[str] = None) -> None:
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if not prefix:
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return
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matches = {}
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for opt in options_for_completion():
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if isinstance(opt, str):
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continue
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aliases = frozenset(x for x in opt['aliases'] if x.startswith(prefix)) if prefix else opt['aliases']
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for alias in aliases:
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matches[alias] = opt['help'].strip()
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ans.add_match_group('Options', matches)
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def complete_kitty_cli_arg(ans: Completions, opt: Optional[OptionDict], prefix: str, unknown_args: Delegate) -> None:
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prefix = prefix or ''
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if not opt:
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if unknown_args.num_of_unknown_args > 0:
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ans.delegate = unknown_args
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return
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dest = opt['dest']
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if dest == 'override':
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from kitty.config import option_names_for_completion
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k = 'Config directives'
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ans.add_match_group(k, {k+'=': '' for k in option_names_for_completion() if k.startswith(prefix)}, trailing_space=False)
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elif dest == 'config':
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def is_conf_file(x: str) -> bool:
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if os.path.isdir(x):
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return True
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return x.lower().endswith('.conf')
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complete_files_and_dirs(ans, prefix, files_group_name='Config files', predicate=is_conf_file)
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elif dest == 'session':
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complete_files_and_dirs(ans, prefix, files_group_name='Session files')
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elif dest == 'watcher':
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complete_files_and_dirs(ans, prefix, files_group_name='Watcher files')
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elif dest == 'directory':
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complete_dirs(ans, prefix)
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elif dest == 'listen_on':
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if ':' not in prefix:
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k = 'Address type'
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ans.add_match_group(k, {x: x for x in ('unix:', 'tcp:') if x.startswith(prefix)}, trailing_space=False)
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elif prefix.startswith('unix:') and not prefix.startswith('@'):
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complete_files_and_dirs(ans, prefix[len('unix:'):], files_group_name='UNIX sockets', add_prefix='unix:')
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else:
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complete_basic_option_args(ans, opt, prefix)
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CompleteArgsFunc = Callable[[Completions, Optional[OptionDict], str, Delegate], None]
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def complete_alias_map(
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ans: Completions,
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words: Sequence[str],
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new_word: bool,
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option_map: Dict[str, OptionDict],
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complete_args: Optional[CompleteArgsFunc] = None
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) -> None:
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expecting_arg = False
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opt: Optional[OptionDict] = None
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last_word = words[-1] if words else ''
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for i, w in enumerate(words):
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if expecting_arg:
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if w is last_word and not new_word:
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if opt is not None and complete_args is not None:
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complete_args(ans, opt, w, Delegate())
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return
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expecting_arg = False
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continue
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opt = option_map.get(w)
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if w is last_word and not new_word:
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if w.startswith('-'):
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ans.add_match_group('Options', {k: opt['help'] for k, opt in option_map.items() if k.startswith(last_word)})
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else:
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if complete_args is not None:
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complete_args(ans, None, last_word, Delegate(words, i))
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return
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if opt is None:
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if complete_args is not None:
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complete_args(ans, None, '' if new_word else last_word, Delegate(words, i, new_word))
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return # some non-option word encountered
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expecting_arg = not opt.get('type', '').startswith('bool-')
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if expecting_arg:
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if opt is not None and complete_args is not None:
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complete_args(ans, opt, '' if new_word else last_word, Delegate())
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else:
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prefix = '' if new_word else last_word
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if complete_args is not None:
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complete_args(ans, None, prefix, Delegate())
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ans.add_match_group('Options', {k: opt['help'] for k, opt in option_map.items() if k.startswith(prefix)})
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def complete_cli(
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ans: Completions,
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words: Sequence[str],
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new_word: bool,
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seq: OptionSpecSeq,
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complete_args: Optional[CompleteArgsFunc] = None
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) -> None:
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option_map = {}
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for opt in seq:
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if not isinstance(opt, str):
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for alias in opt['aliases']:
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option_map[alias] = opt
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complete_alias_map(ans, words, new_word, option_map, complete_args)
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def complete_remote_command(ans: Completions, cmd_name: str, words: Sequence[str], new_word: bool) -> None:
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aliases, alias_map = options_for_cmd(cmd_name)
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if not alias_map:
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return
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args_completer: Optional[CompleteArgsFunc] = None
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args_completion = command_for_name(cmd_name).args_completion
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if args_completion:
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if 'files' in args_completion:
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title, matchers = args_completion['files']
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if isinstance(matchers, tuple):
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args_completer = remote_files_completer(title, matchers)
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elif 'names' in args_completion:
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title, q = args_completion['names']
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args_completer = remote_args_completer(title, q() if callable(q) else q)
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complete_alias_map(ans, words, new_word, alias_map, complete_args=args_completer)
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def path_completion(prefix: str = '') -> Tuple[List[str], List[str]]:
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prefix = prefix.replace(r'\ ', ' ')
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dirs, files = [], []
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base = '.'
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if prefix.endswith('/'):
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base = prefix
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elif '/' in prefix:
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base = os.path.dirname(prefix)
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src = os.path.expandvars(os.path.expanduser(base))
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src_prefix = os.path.abspath(os.path.expandvars(os.path.expanduser(prefix))) if prefix else ''
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try:
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items: Iterable[os.DirEntry] = os.scandir(src)
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except FileNotFoundError:
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items = ()
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for x in items:
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abspath = os.path.abspath(x.path)
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if prefix and not abspath.startswith(src_prefix):
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continue
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if prefix:
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q = prefix + abspath[len(src_prefix):].lstrip(os.sep)
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q = os.path.expandvars(os.path.expanduser(q))
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else:
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q = os.path.relpath(abspath)
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if x.is_dir():
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dirs.append(q.rstrip(os.sep) + os.sep)
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else:
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files.append(q)
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return dirs, files
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def complete_files_and_dirs(
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ans: Completions,
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prefix: str,
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files_group_name: str = 'Files',
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predicate: Optional[Callable[[str], bool]] = None,
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add_prefix: Optional[str] = None
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) -> None:
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dirs, files_ = path_completion(prefix or '')
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files: Iterable[str] = filter(predicate, files_)
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if add_prefix:
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dirs = list(add_prefix + x for x in dirs)
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|
files = (add_prefix + x for x in files)
|
|
|
|
if dirs:
|
|
ans.add_match_group('Directories', dirs, trailing_space=False, is_files=True)
|
|
if files:
|
|
ans.add_match_group(files_group_name, files, is_files=True)
|
|
|
|
|
|
def complete_basic_option_args(ans: Completions, opt: OptionDict, prefix: str) -> None:
|
|
if opt['choices']:
|
|
ans.add_match_group(f'Choices for {opt["dest"]}', tuple(k for k in opt['choices'] if k.startswith(prefix)))
|
|
|
|
|
|
def complete_dirs(ans: Completions, prefix: str = '') -> None:
|
|
dirs, files_ = path_completion(prefix or '')
|
|
if dirs:
|
|
ans.add_match_group('Directories', dirs, trailing_space=False, is_files=True)
|
|
|
|
|
|
def complete_icat_args(ans: Completions, opt: Optional[OptionDict], prefix: str, unknown_args: Delegate) -> None:
|
|
from .guess_mime_type import guess_type
|
|
|
|
def icat_file_predicate(filename: str) -> bool:
|
|
mt = guess_type(filename, allow_filesystem_access=True)
|
|
if mt and mt.startswith('image/'):
|
|
return True
|
|
return False
|
|
|
|
if opt is None:
|
|
complete_files_and_dirs(ans, prefix, 'Images', icat_file_predicate)
|
|
else:
|
|
complete_basic_option_args(ans, opt, prefix)
|
|
|
|
|
|
def complete_themes_args(ans: Completions, opt: Optional[OptionDict], prefix: str, unknown_args: Delegate) -> None:
|
|
if opt is None:
|
|
from kittens.themes.collection import load_themes
|
|
themes = load_themes(cache_age=-1, ignore_no_cache=True)
|
|
names = tuple(t.name for t in themes if t.name.startswith(prefix))
|
|
ans.add_match_group('Themes', names)
|
|
else:
|
|
complete_basic_option_args(ans, opt, prefix)
|
|
|
|
|
|
def remote_files_completer(name: str, matchers: Tuple[str, ...]) -> CompleteArgsFunc:
|
|
|
|
def complete_files_map(ans: Completions, opt: Optional[OptionDict], prefix: str, unknown_args: Delegate) -> None:
|
|
|
|
def predicate(filename: str) -> bool:
|
|
for m in matchers:
|
|
if isinstance(m, str):
|
|
from fnmatch import fnmatch
|
|
return fnmatch(filename, m)
|
|
return False
|
|
|
|
if opt is None:
|
|
complete_files_and_dirs(ans, prefix, name, predicate)
|
|
else:
|
|
complete_basic_option_args(ans, opt, prefix)
|
|
return complete_files_map
|
|
|
|
|
|
def remote_args_completer(title: str, words: Iterable[str]) -> CompleteArgsFunc:
|
|
items = sorted(words)
|
|
|
|
def complete_names_for_arg(ans: Completions, opt: Optional[OptionDict], prefix: str, unknown_args: Delegate) -> None:
|
|
if opt is None:
|
|
ans.add_match_group(title, {c: '' for c in items if c.startswith(prefix)})
|
|
else:
|
|
complete_basic_option_args(ans, opt, prefix)
|
|
|
|
return complete_names_for_arg
|
|
|
|
|
|
def config_file_predicate(filename: str) -> bool:
|
|
return filename.endswith('.conf')
|
|
|
|
|
|
def complete_diff_args(ans: Completions, opt: Optional[OptionDict], prefix: str, unknown_args: Delegate) -> None:
|
|
if opt is None:
|
|
complete_files_and_dirs(ans, prefix, 'Files')
|
|
elif opt['dest'] == 'config':
|
|
complete_files_and_dirs(ans, prefix, 'Config Files', config_file_predicate)
|
|
else:
|
|
complete_basic_option_args(ans, opt, prefix)
|
|
|
|
|
|
def complete_kitten(ans: Completions, kitten: str, words: Sequence[str], new_word: bool) -> None:
|
|
try:
|
|
completer = get_kitten_completer(kitten)
|
|
except SystemExit:
|
|
completer = None
|
|
if completer is not None:
|
|
completer(ans, words, new_word)
|
|
return
|
|
try:
|
|
cd = get_kitten_cli_docs(kitten)
|
|
except SystemExit:
|
|
cd = None
|
|
if cd is None:
|
|
return
|
|
options = cd['options']()
|
|
seq = parse_option_spec(options)[0]
|
|
option_map = {}
|
|
if not new_word:
|
|
for opt in seq:
|
|
if not isinstance(opt, str):
|
|
for alias in opt['aliases']:
|
|
option_map[alias] = opt
|
|
complete_alias_map(ans, words, new_word, option_map, {
|
|
'icat': complete_icat_args,
|
|
'diff': complete_diff_args,
|
|
'themes': complete_themes_args,
|
|
}.get(kitten))
|
|
|
|
|
|
def find_completions(words: Sequence[str], new_word: bool, entry_points: Iterable[str], namespaced_entry_points: Iterable[str]) -> Completions:
|
|
ans = Completions()
|
|
if not words or words[0] != 'kitty':
|
|
return ans
|
|
words = words[1:]
|
|
if not words or (len(words) == 1 and not new_word):
|
|
prefix = words[0] if words else ''
|
|
completions_for_first_word(ans, prefix, entry_points, namespaced_entry_points)
|
|
kitty_cli_opts(ans, prefix)
|
|
return ans
|
|
if words[0] == '@':
|
|
if len(words) == 1 or (len(words) == 2 and not new_word):
|
|
prefix = words[1] if len(words) > 1 else ''
|
|
ans.add_match_group('Remote control commands', {c: '' for c in remote_control_command_names() if c.startswith(prefix)})
|
|
else:
|
|
complete_remote_command(ans, words[1], words[2:], new_word)
|
|
return ans
|
|
if words[0].startswith('@'):
|
|
if len(words) == 1 and not new_word:
|
|
prefix = words[0]
|
|
ans.add_match_group('Remote control commands', {'@' + c: '' for c in remote_control_command_names() if c.startswith(prefix)})
|
|
else:
|
|
complete_remote_command(ans, words[0][1:], words[1:], new_word)
|
|
if words[0] == '+':
|
|
if len(words) == 1 or (len(words) == 2 and not new_word):
|
|
prefix = words[1] if len(words) > 1 else ''
|
|
ans.add_match_group('Entry points', {c: '' for c in namespaced_entry_points if c.startswith(prefix)})
|
|
else:
|
|
if words[1] == 'kitten':
|
|
if len(words) == 2 or (len(words) == 3 and not new_word):
|
|
ans.add_match_group('Kittens', (k for k in all_kitten_names() if k.startswith('' if len(words) == 2 else words[2])))
|
|
else:
|
|
complete_kitten(ans, words[2], words[3:], new_word)
|
|
return ans
|
|
if words[0].startswith('+'):
|
|
if len(words) == 1:
|
|
if new_word:
|
|
if words[0] == '+kitten':
|
|
ans.add_match_group('Kittens', all_kitten_names())
|
|
else:
|
|
prefix = words[0]
|
|
ans.add_match_group('Entry points', (c for c in namespaced_entry_points if c.startswith(prefix)))
|
|
else:
|
|
if len(words) == 2 and not new_word:
|
|
ans.add_match_group('Kittens', (k for k in all_kitten_names() if k.startswith(words[1])))
|
|
else:
|
|
if words[0] == '+kitten':
|
|
complete_kitten(ans, words[1], words[2:], new_word)
|
|
else:
|
|
complete_cli(ans, words, new_word, options_for_completion(), complete_kitty_cli_arg)
|
|
|
|
return ans
|
|
|
|
|
|
def setup(cstyle: str) -> None:
|
|
print(completion_scripts[cstyle])
|
|
|
|
|
|
def main(args: Sequence[str], entry_points: Iterable[str], namespaced_entry_points: Iterable[str]) -> None:
|
|
if not args:
|
|
raise SystemExit('Must specify completion style')
|
|
cstyle = args[0]
|
|
if cstyle == 'setup':
|
|
return setup(args[1])
|
|
data = sys.stdin.read()
|
|
try:
|
|
parser = parsers[cstyle]
|
|
serializer = serializers[cstyle]
|
|
except KeyError:
|
|
raise SystemExit(f'Unknown completion style: {cstyle}')
|
|
words, new_word = parser(data)
|
|
ans = find_completions(words, new_word, entry_points, namespaced_entry_points)
|
|
print(serializer(ans), end='')
|