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# Copyright 2012-2022 David Robillard <d@drobilla.net>
# Copyright 2009 Lars Luthman <lars.luthman@gmail.com>
# SPDX-License-Identifier: 0BSD OR ISC
# Bash auto-completion script written for lv2info. Could be adapted to any
# other program that takes an LV2 plugin URI as parameter.
# For some reason Bash splits the command line not only at whitespace
# but also at ':' signs before putting the parts into COMP_WORDS.
# Since ':' is used in all URIs, which are what we want to complete,
# we have to put the URI back together before we can complete it
# and then cut off the parts we prepended from the completions.
# It probably breaks in some special cases but for most common uses
# it should work fine.
function _lv2info() {
local uri cur opts w wn raw_reply len type
opts=`lv2ls | xargs -n1 echo -n " "`
# This is the last "word", as split by Bash.
cur="${COMP_WORDS[COMP_CWORD]}"
w="$cur"
# Add the previous word while it or this one is a word break character
for i in `seq $(( $COMP_CWORD - 1 )) -1 1`; do
wn="${COMP_WORDS[i]}"
if expr "$COMP_WORDBREAKS" : ".*$wn" > /dev/null; then
if expr "$COMP_WORDBREAKS" : ".*$w" > /dev/null; then
break
fi
fi
w="$wn"
uri="$w$uri"
done
# Check the length of the words we prepend
len=${#uri}
uri="$uri$cur"
raw_reply="$(compgen -W "${opts}" -- ${uri})"
# If we are listing alternatives, just print the full URIs.
type=`echo $COMP_TYPE | awk '{ printf "%c", $1 }'`
if expr "?!@%" : ".*$type" > /dev/null; then
COMPREPLY=( $raw_reply )
return 0
fi
# Otherwise, strip the prepended words from all completion suggestions.
COMPREPLY=()
for i in $raw_reply; do
COMPREPLY=( ${COMPREPLY[@]} ${i:len} )
done
}
complete -F _lv2info lv2info
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