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MasterPassword/platform-independent/c/cli/bashcomplib

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2015-03-12 05:03:02 +00:00
#!/usr/bin/env bash
# FIXME
# partials are currently readline words, but these can't be reliably compared against literal data. We need to make them literal first.. in a safe way. Currently using xargs' quote parser as a hack.
# Process literal completion options in COMPREPLY
#
# 1. Filter COMPREPLY by excluding the options that do not match the word that is being completed.
# 2. Shell-escape the COMPREPLY words so they remain syntactical words when injected into the completed command.
# 3. Add a space after the words so successful completions advance to the next word
# (we disabled this default behavior with -o nospace so we can do completions that don't want this, eg. directory names)
_comp_finish_completions() {
local partial=$(xargs <<< "${COMP_WORDS[COMP_CWORD]}") # FIXME
local word words=( "${COMPREPLY[@]}" )
COMPREPLY=()
for word in "${words[@]}"; do
( shopt -s nocasematch; [[ $word = $partial* ]] ) && COMPREPLY+=( "$(printf '%q ' "$word")" )
done
if (( ${#COMPREPLY[@]} > 1 )) && [[ $_comp_title ]]; then
printf '\n%s:' "$_comp_title"
unset _comp_title
fi
}
# Perform pathname completion.
#
# 1. Populate COMPREPLY with pathnames.
# 2. Shell-escape the COMPREPLY words so they remain syntactical words when injected into the completed command.
# 3. Add a space after file names so successful completions advance to the next word.
# Directory names are suffixed with a / instead so we can keep completing the files inside.
_comp_complete_path() {
local partial=$(xargs <<< "${COMP_WORDS[COMP_CWORD]}")
local path
COMPREPLY=()
for path in "$partial"*; do
if [[ -d $path ]]; then
COMPREPLY+=( "$(printf '%q/' "$path")" )
elif [[ -e $path ]]; then
COMPREPLY+=( "$(printf '%q ' "$path")" )
fi
done
}
_show_args() {
echo
local i=0
for arg; do
printf "arg %d: %s\n" "$((i++))" "$arg"
done
i=0
for word in "${COMP_WORDS[@]}"; do
printf "word %d: %s -> %s %s\n" "$i" "$word" "$(xargs <<< "$word")" "$( ((i == $COMP_CWORD)) && echo '<CWORD>' )"
let i++
done
}