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|
## vim:ft=zsh
## wrapper around man, finfo, etc
## Usage: help <topic>
typeset -a methods
typeset method topic
typeset -i found check_only all
methods=(man zshfunction zshbuiltin apt)
while [[ $1 == -* ]] {
case $1 in
-a|--all) all=1 ;;
-c|--check-only) check_only=1 ;;
-t|--topic) topic=$2; shift ;;
-|--) shift; break ;;
*) echo "unknown option: $1" ;;
esac
shift
}
function help_check_man { man -w $1 &> /dev/null }
function help_check_zshfunction { whichf $1 &> /dev/null }
function help_check_zshbuiltin { (( ${+builtins[$1]} )) }
function help_check_apt {
[[ $commands[$1] != ${HOME}* ]] && check_com -c $1 && check_com -c apt-file
}
function help_show_man { man $1 }
function help_show_zshfunction { finfo $1 }
function help_show_zshbuiltin { man zshbuiltins | less -p " $1" }
function help_show_apt {
apt-cache show ${(s/:/)$(apt-file search -F $commands[$1])[1]}
}
if [[ -z $1 ]] {
echo "Usage: help <command>" > /dev/stderr
return 1
}
for method in $methods; {
if [[ -n $topic && $method != $topic ]] {
continue
}
if help_check_$method $1; then
((found++))
if ((check_only)) {
echo $method
continue
}
help_show_$method $1
((all)) || break
fi
}
if ((found == 0)) {
echo "Sorry, no clue." > /dev/stderr
return 1
}
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