anarchy-chroot.sh

#!/usr/bin/env bash
###############################################################
### Anarchy Linux Install Script
### anarchy-chroot.sh
###
### Copyright (C) 2017 Dylan Schacht
###
### By: Dylan Schacht (deadhead)
### Email: deadhead3492@gmail.com
### Webpage: https://anarchylinux.org
###
### Any questions, comments, or bug reports may be sent to above
### email address. Enjoy, and keep on using Arch.
###
### License: GPL v2.0
###############################################################

anarchy_chroot() {

    local char=
    local input=
    local -a history=( )
    local -i histindex=0
    trap ctrl_c INT
    working_dir=$(</tmp/chroot_dir.var)

    while (true)
      do
        echo -n "${Yellow}<${Red}root${Yellow}@${Green}${hostname}-chroot${Yellow}>: $working_dir>${Red}# ${ColorOff}" ; while IFS= read -r -n 1 -s char
          do
            if [ "${char}" == $'\x1b' ]; then
                while IFS= read -r -n 2 -s rest
                  do
                    char+="${rest}"
                    break
                done
            fi

            if [ "${char}" == $'\x1b[D' ]; then
                pos=-1
            elif [ "${char}" == $'\x1b[C' ]; then
                pos=1
            elif [[ ${char} == $'\177' ]];  then
                input="${input%?}"
                echo -ne "\r\033[K${Yellow}<${Red}root${Yellow}@${Green}${hostname}-chroot${Yellow}>: ${working_dir}>${Red}# ${ColorOff}${input}"
            ## User input up
            elif [ "${char}" == $'\x1b[A' ]; then
                if [ ${histindex} -gt 0 ]; then
                    histindex+=-1
                    input=$(echo -ne "${history[$histindex]}")
                    echo -ne "\r\033[K${Yellow}<${Red}root${Yellow}@${Green}${hostname}-chroot${Yellow}>: ${working_dir}>${Red}# ${ColorOff}${history[$histindex]}"
                fi
            ## User input down
                elif [ "${char}" == $'\x1b[B' ]; then
                        if [ ${histindex} -lt $((${#history[@]} - 1)) ]; then
                    histindex+=1
                    input=$(echo -ne "${history[$histindex]}")
                    echo -ne "\r\033[K${Yellow}<${Red}root${Yellow}@${Green}${hostname}-chroot${Yellow}>: ${working_dir}>${Red}# ${ColorOff}${history[$histindex]}"
                fi
            ### Newline
                elif [ -z "${char}" ]; then
                echo
                    history+=( "${input}" )
                        histindex=${#history[@]}
                break
            else
                echo -n "${char}"
                input+="${char}"
            fi
        done

        if [ "${input}" == "anarchy" ] || [ "${input}" == "exit" ]; then
            rm /tmp/chroot_dir.var &> /dev/null
            clear
            break
        elif (<<<"${input}" grep "^cd " &> /dev/null); then
            ch_dir=$(<<<"${input}" cut -c4-)
            arch-chroot "${ARCH}" /bin/bash -c "cd ${working_dir} ; cd ${ch_dir} ; pwd > /etc/chroot_dir.var"
            mv "${ARCH}"/etc/chroot_dir.var /tmp/
            working_dir=$(</tmp/chroot_dir.var)
        elif  (<<<"${input}" grep "^help" &> /dev/null); then
            echo -e "${arch_chroot_msg}"
            else
            arch-chroot "${ARCH}" /bin/bash -c "cd ${working_dir} ; ${input}"
        fi
        input=
    done

}

ctrl_c() {

    echo
    echo "${Red} Exiting and cleaning up..."
    sleep 0.5
    unset input
    rm /tmp/chroot_dir.var &> /dev/null
    clear
    reboot_system

}

# vim: ai:ts=4:sw=4:et