404 lines
13 KiB
Python
404 lines
13 KiB
Python
#!/usr/bin/env python3
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# vim:fileencoding=utf-8
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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 kittens.runner import get_kitten_cli_docs, all_kitten_names
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from .cli import options_for_completion, parse_option_spec
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from .cmds import cmap
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from .shell import options_for_cmd
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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 call's 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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alongwith 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, serializers = {}, {}
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def debug(*a, **kw):
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kw['file'] = sys.stderr
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print(*a, **kw)
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class Completions:
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def __init__(self):
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self.match_groups = {}
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self.no_space_groups = set()
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self.files_groups = set()
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# Shell specific code {{{
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completion_scripts = {
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'zsh': '''
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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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}
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def input_parser(func):
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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):
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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):
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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):
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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):
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return data.rstrip().splitlines(), True
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@output_serializer
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def zsh_output_serializer(ans):
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lines = []
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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(description)]
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if description in ans.no_space_groups:
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cmd += ['-S', '""']
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if description in ans.files_groups:
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cmd.append('-f')
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common_prefix = os.path.commonprefix(tuple(matches))
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if common_prefix:
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cmd.extend(('-p', shlex.quote(common_prefix)))
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matches = {k[len(common_prefix):]: v for k, v in matches.items()}
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cmd.append('--')
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for word, description in matches.items():
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cmd.append(shlex.quote(word))
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lines.append(' '.join(cmd) + ';')
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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 bash_output_serializer(ans):
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lines = []
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for description, matches in ans.match_groups.items():
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needs_space = description not in ans.no_space_groups
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for word in matches:
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if needs_space:
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word += ' '
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lines.append('COMPREPLY+=({})'.format(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):
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lines = []
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for matches in ans.match_groups.values():
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for word in matches:
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lines.append(shlex.quote(word))
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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, prefix, entry_points, namespaced_entry_points):
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cmds = ['@' + c for c in cmap]
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ans.match_groups['Entry points'] = {
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k: None 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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def kitty_cli_opts(ans, prefix=None):
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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.match_groups['Options'] = matches
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def complete_kitty_cli_arg(ans, opt, prefix):
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prefix = prefix or ''
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if opt and opt['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.match_groups[k] = {k+'=': None for k in option_names_for_completion() if k.startswith(prefix)}
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ans.no_space_groups.add(k)
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def complete_alias_map(ans, words, new_word, option_map, complete_args=None):
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expecting_arg = False
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opt = None
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last_word = words[-1] if words else ''
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for w in 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:
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complete_args(ans, opt, w)
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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.match_groups['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)
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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)
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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)
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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)
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ans.match_groups['Options'] = {k: opt['help'] for k, opt in option_map.items() if k.startswith(prefix)}
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def complete_cli(ans, words, new_word, seq, complete_args=lambda *a: 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, cmd_name, words, new_word):
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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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complete_alias_map(ans, words, new_word, alias_map)
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def path_completion(prefix=''):
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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 = 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(ans, prefix, files_group_name='Files', predicate=None):
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dirs, files = path_completion(prefix or '')
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files = filter(predicate, files)
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if dirs:
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ans.match_groups['Directories'] = dict.fromkeys(dirs)
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ans.files_groups.add('Directories'), ans.no_space_groups.add('Directories')
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if files:
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ans.match_groups[files_group_name] = dict.fromkeys(files)
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ans.files_groups.add(files_group_name)
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def complete_icat_args(ans, opt, prefix):
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from mimetypes import guess_type
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def icat_file_predicate(filename):
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mt = guess_type(filename)[0]
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if mt and mt.startswith('image/'):
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return True
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if opt is None:
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complete_files_and_dirs(ans, prefix, 'Images', icat_file_predicate)
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def config_file_predicate(filename):
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return filename.endswith('.conf')
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def complete_diff_args(ans, opt, prefix):
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if opt is None:
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complete_files_and_dirs(ans, prefix, 'Files')
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elif opt['dest'] == 'config':
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complete_files_and_dirs(ans, prefix, 'Config Files', config_file_predicate)
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def complete_kitten(ans, kitten, words, new_word):
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try:
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cd = get_kitten_cli_docs(kitten)
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except SystemExit:
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cd = None
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if cd is None:
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return
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options = cd['options']()
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seq = parse_option_spec(options)[0]
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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, {
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'icat': complete_icat_args,
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'diff': complete_diff_args,
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}.get(kitten))
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def find_completions(words, new_word, entry_points, namespaced_entry_points):
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ans = Completions()
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if not words or words[0] != 'kitty':
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return ans
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words = words[1:]
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if not words or (len(words) == 1 and not new_word):
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prefix = words[0] if words else ''
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completions_for_first_word(ans, prefix, entry_points, namespaced_entry_points)
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kitty_cli_opts(ans, prefix)
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return ans
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if words[0] == '@':
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if len(words) == 1 or (len(words) == 2 and not new_word):
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prefix = words[1] if len(words) > 1 else ''
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ans.match_groups['Remote control commands'] = {c: None for c in cmap if c.startswith(prefix)}
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else:
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complete_remote_command(ans, words[1], words[2:], new_word)
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return ans
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if words[0].startswith('@'):
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if len(words) == 1 and not new_word:
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prefix = words[0]
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ans.match_groups['Remote control commands'] = {'@' + c: None for c in cmap if c.startswith(prefix)}
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else:
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complete_remote_command(ans, words[0][1:], words[1:], new_word)
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if words[0] == '+':
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if len(words) == 1 or (len(words) == 2 and not new_word):
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prefix = words[1] if len(words) > 1 else ''
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ans.match_groups['Entry points'] = {c: None for c in namespaced_entry_points if c.startswith(prefix)}
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else:
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if words[1] == 'kitten':
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if len(words) == 2 or (len(words) == 3 and not new_word):
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ans.match_groups['Kittens'] = dict.fromkeys(k for k in all_kitten_names() if k.startswith('' if len(words) == 2 else words[2]))
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else:
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complete_kitten(ans, words[2], words[3:], new_word)
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return ans
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if words[0].startswith('+'):
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if len(words) == 1:
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if new_word:
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if words[0] == '+kitten':
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ans.match_groups['Kittens'] = dict.fromkeys(all_kitten_names())
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else:
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prefix = words[0]
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ans.match_groups['Entry points'] = {c: None for c in namespaced_entry_points if c.startswith(prefix)}
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else:
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if len(words) == 2 and not new_word:
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ans.match_groups['Kittens'] = dict.fromkeys(k for k in all_kitten_names() if k.startswith(words[1]))
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else:
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if words[0] == '+kitten':
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complete_kitten(ans, words[1], words[2:], new_word)
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else:
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complete_cli(ans, words, new_word, options_for_completion(), complete_kitty_cli_arg)
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return ans
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def setup(cstyle):
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print(completion_scripts[cstyle])
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def main(args, entry_points, namespaced_entry_points):
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if not args:
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raise SystemExit('Must specify completion style')
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cstyle = args[0]
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if cstyle == 'setup':
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return setup(args[1])
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data = sys.stdin.read()
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try:
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parser = parsers[cstyle]
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serializer = serializers[cstyle]
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except KeyError:
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raise SystemExit('Unknown completion style: {}'.format(cstyle))
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words, new_word = parser(data)
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ans = find_completions(words, new_word, entry_points, namespaced_entry_points)
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print(serializer(ans), end='')
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