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mpv/etc/mpv.bash-completion
Philip Langdale 3259494d9e bash completion: only generate option list when needed
Right now we are generating the fully option list before doing
anything else. That makes filename completion significantly slower
than it was before, for no gain. It's easy to only generate the
option list when it's actually needed.

I also know I could additionally cache the option list across
invocations, but I'm not doing that yet to make testing easier.
2020-01-13 17:12:25 -08:00

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#!/bin/bash
#
# This file is part of mpv.
#
# mpv is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# mpv is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with mpv. If not, see <http://www.gnu.org/licenses/>.
#
_mpv_get_args()
{
local doc=$(mpv --list-options | grep -E "^\\s*$1\\s")
local partial="$2"
local type=$(echo "$doc" | awk '{print $2;}')
if [ "$1" = "--show-profile" ]; then
# This is a special case
type="Profile"
fi
declare -a candidates
case $type in
String)
echo "$doc" | grep -q '\[file\]'
if [ $? -eq 0 ]; then
if [ "$cur" = '=' ]; then
# Without this, _filedir will try and complete files starting with '='
cur=""
fi
_filedir
return 0
else
candidates=($(mpv $1=help | grep -v ':' | awk '{print $1;}'))
candidates+=("help")
fi
;;
Flag)
candidates=("yes" "no" "help")
;;
Choices:)
candidates=($(mpv $1=help | grep -v ':' | awk '{print $1;}'))
candidates+=("help")
;;
Image)
candidates=($(mpv $1=help))
candidates=("${candidates[@]:2}")
candidates+=("help")
;;
Profile)
candidates=($(mpv $1= | grep -v ':' | awk '{print $1;}'))
;;
*)
# There are other categories; some of which we could do something smarter
# about, with enough work.
;;
esac
COMPREPLY=($(compgen -W "${candidates[*]}" -- "${partial}"))
if [ ${#COMPREPLY[@]} -gt 1 ]; then
compopt -o nospace mpv
fi
}
_mpv()
{
compopt +o nospace mpv
# _filedir requires the current candidate be in $cur
local cur=${COMP_WORDS[COMP_CWORD]}
local prev=${COMP_WORDS[((COMP_CWORD - 1))]}
if [ "$cur" = '=' ]; then
# If the current word is '=' then we are looking for an argument for the
# option specified by the previous word.
_mpv_get_args "$prev"
elif [ "$prev" = '=' ]; then
# If the previous word is '=' then we are completing an argument for the
# option specified by the word before the '='.
local prevprev=${COMP_WORDS[((COMP_CWORD - 2))]}
_mpv_get_args "$prevprev" "$cur"
else
case $cur in
-*)
# This regex detects special options where we don't want an '=' appended
local special_regex='Flag.*\[not in config files\]|Print'
local options=($(mpv --list-options | grep -v -E "$special_regex" |awk '{print "\\"$1;}' | grep '\--'))
local specials=($(mpv --list-options | grep -E "$special_regex" |awk '{print "\\"$1;}' | grep '\--'))
COMPREPLY=($(compgen -W "${options[*]}" -S '=' -- "${cur}"))
local normal_count=${#COMPREPLY[@]}
COMPREPLY+=($(compgen -W "${specials[*]}" -- "${cur}"))
if [ $normal_count -gt 0 -o ${#COMPREPLY[@]} -gt 1 ]; then
compopt -o nospace mpv
fi
;;
*)
_filedir
;;
esac
fi
}
complete -F _mpv mpv