manhunt

#!/bin/bash

program=""
keyword=""
context=10
search_help=false

usage (){
    echo ${0##*/}
    echo "${0##*/}: Searches manpage for keyword"
    echo "Usage: ${0##*/} [-h] [-c X] program keyword"
    echo -e "Options
\t-h\tSearch help options rather than manpage
\t-c X\t Provide X lines of context"
    exit 1
}

#oneshot for printing one entire screen of '='
repl() { printf "$1"'%.s' $(eval "echo {1.."$(($2))"}"); }

while getopts "hc:" opt; do
    case $opt in
        c )
            context=$OPTARG
            ;;
        h )
            search_help=true
            ;;
        ? )
            usage
            ;;
        : )
            echo "Option requires argument: $opt"
            usage
            ;;

     esac
done
shift $((OPTIND-1))

#save separator string
separator="$(repl = $(tput cols))"



#Searches manpage with context
if [ "$#" -lt 2 ]; then
    usage
fi


program="$1"
keyword="$2"

keyword=${keyword/'-'/'\-'}

helptext=

if [ "$search_help" = true ]; then
    helptext=$($program --help)
else
    helptext=$(man $program)
fi

ggrep --color=auto --group-separator $separator -B $context -A $context "$keyword" <<< "$helptext"