Freshen up that prompt!
Emulate a Powerline setup. Includes: * Change custom foreground colours to background colours * Add 8 different separators, selected randomly based on terminal ID * Prettier and more sensible Git repo sigils * Cleaned and condensed code
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25a0523524
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246
bash/prompt.sh
246
bash/prompt.sh
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@ -1,14 +1,45 @@
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# vim: ft=sh
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# Explain prompt
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ARG=$1
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if [[ $ARG == 'h' || $ARG == '-h' || $ARG == 'help' || $ARG == '--help' || $ARG == '?' ]]; then
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ARG="-h"
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elif [[ $ARG != '' ]]; then
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echo "Invalid argument: $ARG"
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exit 0
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if [[ $1 && $1 != 'h' && $1 != '-h' && $1 != 'help' && $1 != '--help' && $1 != '?' ]]; then
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echo "Invalid argument: $1"
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exit
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fi
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# Declare the S name (as used by `setterm`) and B for POSIX background colour
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# Reference them later like: ${COLOURS["BLACK","S"]} or ${COLOURS["CYAN","B"]}
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declare -A COLOURS='(
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[0,S]="default"
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[0,B]="\[\e[0m\]"
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[1,S]="red"
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[1,B]="\[\e[1;30;41m\]"
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[2,S]="green"
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[2,B]="\[\e[1;30;42m\]"
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[3,S]="yellow"
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[3,B]="\[\e[1;30;43m\]"
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[4,S]="blue"
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[4,B]="\[\e[1;30;44m\]"
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[5,S]="magenta"
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[5,B]="\[\e[1;30;45m\]"
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[6,S]="cyan"
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[6,B]="\[\e[1;30;46m\]"
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[7,S]="white"
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[7,B]="\[\e[1;30;47m\]"
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)'
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# Assign colour to each module
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P="7" # prompt default, white
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T="3" # time, yellow
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E="7" # venv, white
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C="0" # chroot, default
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U="2" # user
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R="1" # root user
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H="1" # host (overwritten for distrobox and ssh)
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B="4" # distrobox
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S="5" # ssh
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D="6" # dir
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G="7" # git
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# If directory was just changed to the root of a git repository, print onefetch
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if [ -n "$DIRCHANGED" ]; then
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source ${HOME}/.dotfiles/bash/plenv-path.sh
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@ -22,166 +53,127 @@ if [ -n "$DIRCHANGED" ]; then
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unset DIRCHANGED
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fi
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# Default colours
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# 0 default, 1 red 2 green 3 yellow 4 blue 5 magenta 6 cyan 7 white (grey)
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PC="0" # prompt default
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TC="3" # time
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EC="7" # venv
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CC="1" # chroot
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UC="2" # user
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RC="1" # root user
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HC="4" # host
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SC="1" # ssh host
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DC="6" # dir
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GC="5" # git
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# Choose a pseudo random separator character
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# Declare the SET name (as used by `setterm`) and PS string for colour options
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# Reference them later like: ${COLOURS["5","SET"]} or ${COLOURS["2","PS"]}
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declare -A COLOURS='(
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[0,SET]="default"
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[0,PS]="\[\033[0;0m\]"
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[1,SET]="red"
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[1,PS]="\[\033[0;31m\]"
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[2,SET]="green"
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[2,PS]="\[\033[0;32m\]"
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[3,SET]="yellow"
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[3,PS]="\[\033[0;33m\]"
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[4,SET]="blue"
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[4,PS]="\[\033[0;34m\]"
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[5,SET]="magenta"
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[5,PS]="\[\033[0;35m\]"
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[6,SET]="cyan"
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[6,PS]="\[\033[0;36m\]"
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[7,SET]="white"
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[7,PS]="\[\033[0;37m\]"
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)'
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# Local connections can just use ALACRITTY_WINDOW_ID
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if [[ -n $ALACRITTY_WINDOW_ID ]]; then
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# The last 4 bits are always 0, so drop them
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SEP=$(($ALACRITTY_WINDOW_ID >> 4))
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(( SEP &= 7 ))
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# SSH connections can use PID stored in SSH_CONNECTION
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else
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# Seems to always be even, so drop 1 bit
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SEP=$(( $(echo $SSH_CONNECTION | cut -d ' ' -f 2) >> 1 ))
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fi
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# Just use the new last 4 bits to get a pseudo random number from 0-7
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(( SEP &= 7 ))
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# Select the separator character (some wide characters look better with a trailing space)
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# See https://github.com/ryanoasis/powerline-extra-symbols
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case "$SEP" in
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0) SEP="" ;;
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1) SEP=" " ;;
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2) SEP=" " ;;
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3) SEP=" " ;;
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4) SEP=" " ;;
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5) SEP="" ;;
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6) SEP=" " ;;
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7) SEP="" ;;
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esac
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# Get current git branch
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function parse_git_branch() {
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BRANCH=$(git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/')
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if [ ! "${BRANCH}" == "" ]
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then
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STAT=$(parse_git_dirty)
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echo "${COLOURS[\"$GC\",\"PS\"]}(${BRANCH}${STAT})${COLOURS[\"0\",\"PS\"]}"
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else
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echo ""
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fi
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BRANCH=$(git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/')
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[ ! "${BRANCH}" == "" ] && echo "\[\e[1;31;4${G}m\]$(parse_git_dirty)${COLOURS["$G","B"]}${BRANCH}" || echo ""
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}
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# Get git status
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function parse_git_dirty {
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status=$(git status 2>&1 | tee)
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dirty=$(echo -n "${status}" 2> /dev/null | grep "modified:" &> /dev/null; echo "$?")
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untracked=$(echo -n "${status}" 2> /dev/null | grep "Untracked files" &> /dev/null; echo "$?")
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ahead=$(echo -n "${status}" 2> /dev/null | grep "Your branch is ahead of" &> /dev/null; echo "$?")
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newfile=$(echo -n "${status}" 2> /dev/null | grep "new file:" &> /dev/null; echo "$?")
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renamed=$(echo -n "${status}" 2> /dev/null | grep "renamed:" &> /dev/null; echo "$?")
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deleted=$(echo -n "${status}" 2> /dev/null | grep "deleted:" &> /dev/null; echo "$?")
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status=$(git status 2>/dev/null)
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modified=$(echo -n "${status}" | grep "modified:" &> /dev/null; echo "$?")
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untracked=$(echo -n "${status}" | grep "Untracked files" &> /dev/null; echo "$?")
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ahead=$(echo -n "${status}" | grep "Your branch is ahead of" &> /dev/null; echo "$?")
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newfile=$(echo -n "${status}" | grep "new file:" &> /dev/null; echo "$?")
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renamed=$(echo -n "${status}" | grep "renamed:" &> /dev/null; echo "$?")
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deleted=$(echo -n "${status}" | grep "deleted:" &> /dev/null; echo "$?")
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bits=''
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if [ "${renamed}" == "0" ]; then
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bits=">${bits}"
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fi
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if [ "${ahead}" == "0" ]; then
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bits="*${bits}"
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fi
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if [ "${newfile}" == "0" ]; then
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bits="+${bits}"
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fi
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if [ "${untracked}" == "0" ]; then
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bits="?${bits}"
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fi
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if [ "${deleted}" == "0" ]; then
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bits="x${bits}"
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fi
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if [ "${dirty}" == "0" ]; then
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bits="!${bits}"
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fi
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if [ "${bits}" != "" ]; then
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echo " ${bits}"
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else
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echo ""
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fi
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[ "${modified}" == "0" ] && bits="${bits} "
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[ "${newfile}" == "0" ] && bits="${bits} "
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[ "${deleted}" == "0" ] && bits="${bits} "
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[ "${renamed}" == "0" ] && bits="${bits} "
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[ "${untracked}" == "0" ] && bits="${bits}🯄 "
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[ "${ahead}" == "0" ] && bits="${bits} "
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[ "${bits}" != "" ] && echo "${bits}" || echo ""
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}
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# Comment - allow for command history to be copied directly to bash script
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PS1="${COLOURS["$PC","PS"]}# "
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# Opening # so that PS1 gets interpretted as a comment if pasted into a terminal or script
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PS1="${COLOURS["$P","B"]}#"
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# Track the last Background colour so that it can be used for the next separator
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LASTB=$P
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# Sigil to indicate host, distrobox or ssh. Store HC so that host matches connection type
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if [ -f "/run/.containerenv" ]; then
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# Sigil to indicate host, distrobox or ssh
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PS1="${PS1}${COLOURS["0","PS"]}⧉ "
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H=$B
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[[ $1 ]] && setterm --foreground ${COLOURS[$H,"S"]} && echo "distrobox" && setterm --foreground default
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PS1="${PS1}\[\e[0;3${LASTB};4${H}m\]"${SEP}"${COLOURS["$H","B"]}📦"
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elif [[ -z $SSH_CLIENT ]]; then
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PS1="${PS1}${COLOURS["1","PS"]}⌂ "
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[[ $1 ]] && setterm --foreground ${COLOURS[$H,"S"]} && echo "host session" && setterm --foreground default
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PS1="${PS1}\[\e[0;3${LASTB};4${H}m\]"${SEP}"${COLOURS["$H","B"]}🏠"
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else
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PS1="${PS1}${COLOURS["1","PS"]}🖧 "
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H=$S
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[[ $1 ]] && setterm --foreground ${COLOURS[$H,"S"]} && echo "ssh connection" && setterm --foreground default
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PS1="${PS1}\[\e[0;3${LASTB};4${H}m\]"${SEP}"${COLOURS["$H","B"]}🖧 "
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fi
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LASTB=$H
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# Time
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PS1="${PS1}${COLOURS["$TC","PS"]}\\t "
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if [[ $ARG == '-h' ]]; then
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setterm --foreground ${COLOURS["$TC","SET"]}; echo "time"; setterm --foreground default
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fi
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[[ $1 ]] && setterm --foreground ${COLOURS["$T","S"]} && echo "time" && setterm --foreground default
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PS1="${PS1}\[\e[0;3${LASTB};4${T}m\]"${SEP}
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PS1="${PS1}${COLOURS["$T","B"]}\\t"
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LASTB=$T
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# Python venv
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if [ "$VIRTUAL_ENV" ]; then
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VENV="${VIRTUAL_ENV##*/}"
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VENV=$(echo "$VENV" | sed -r 's/.*/[\0]/')
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PS1="${PS1}${COLOURS["$EC","PS"]}${VENV} "
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if [[ $ARG == '-h' ]]; then
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setterm --foreground ${COLOURS["$EC","SET"]}; echo "venv"; setterm --foreground default
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fi
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[[ $1 ]] && setterm --foreground ${COLOURS["$E","S"]} && echo "venv" && setterm --foreground default
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PS1=${PS1}\[\e[0;3${LASTB};4${E}m\]${SEP}${COLOURS["$E","B"]}${VENV}
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LASTB=$E
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fi
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# Debian Chroot
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if [ -z "$debian_chroot" ] && [ -r /etc/debian_chroot ]; then
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PS1="${PS1}${COLOURS["$CC","PS"]}<$(cat /etc/debian_chroot)>"
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if [[ $ARG == '-h' ]]; then
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setterm --foreground ${COLOURS["$CC","SET"]}; echo "debian chroot"; setterm --foreground default
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fi
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[[ $1 ]] && setterm --foreground ${COLOURS["$C","S"]} && echo "debian chroot" && setterm --foreground default
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PS1="${PS1}\[\e[0;3${LASTB};4${C}m\]${SEP}"${COLOURS["$C","B"]}"<$(cat /etc/debian_chroot)>"
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LASTB=$C
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fi
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# User
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if [[ $(whoami) == 'root' ]]; then
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UC=$RC
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fi
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PS1="${PS1}${COLOURS["$UC","PS"]}\\u"
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if [[ $ARG == '-h' ]]; then
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setterm --foreground ${COLOURS["$UC","SET"]}; echo "user"; setterm --foreground default
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fi
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# @
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PS1="${PS1}${COLOURS["$PC","PS"]}@"
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[[ $(whoami) == 'root' ]] && U=$R
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[[ $1 ]] && setterm --foreground ${COLOURS["$U","S"]} && echo "user" && setterm --foreground default
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PS1="${PS1}\[\e[0;3${LASTB};4${U}m\]"${SEP}"${COLOURS["$U","B"]}\\u\[\e[0;30;4${U}m\]@"
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LASTB=$U
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# Host
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if [[ $SSH_TTY != '' ]]; then
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HC="${SC}" # Host colour
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if [[ $ARG == '-h' ]]; then
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setterm --foreground ${COLOURS["$HC","SET"]}; echo "host"; setterm --foreground default
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fi
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else
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if [[ $ARG == '-h' ]]; then
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setterm --foreground ${COLOURS["$HC","SET"]}; echo "host (ssh)"; setterm --foreground default
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fi
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fi
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PS1="${PS1}${COLOURS["$HC","PS"]}\\h"
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# :
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PS1="${PS1}${COLOURS["$PC","PS"]}:"
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[[ $1 ]] && setterm --foreground ${COLOURS["$H","S"]} && echo "hostname" $([[ -z $SSH_TTY ]] || echo " (ssh)") && setterm --foreground default
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PS1="${PS1}\[\e[0;3${LASTB};4${H}m\]"${SEP}"${COLOURS["$H","B"]}\\h\[\e[0;30;4${H}m\]:"
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LASTB=$H
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# Dir
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PS1="${PS1}${COLOURS["$DC","PS"]}\\w "
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if [[ $ARG == '-h' ]]; then
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setterm --foreground ${COLOURS["$DC","SET"]}; echo "directory"; setterm --foreground default
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fi
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[[ $1 ]] && setterm --foreground ${COLOURS["$D","S"]} && echo "directory" && setterm --foreground default
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PS1="${PS1}\[\e[0;3${LASTB};4${D}m\]"${SEP}"${COLOURS["$D","B"]}\\w"
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LASTB=$D
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# Git
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GIT=$(parse_git_branch)
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if [[ $GIT != '' ]]; then
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PS1="${PS1}${COLOURS["$GC","PS"]}${GIT}"
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if [[ $ARG == '-h' ]]; then
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setterm --foreground ${COLOURS["$GC","SET"]}; echo "git branch status"; setterm --foreground default
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fi
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[[ $1 ]] && setterm --foreground ${COLOURS["$G","S"]} && echo "git branch status" && setterm --foreground default
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PS1="$PS1\[\e[0;3${LASTB};4${G}m\]"${SEP}${GIT}
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LASTB=$G
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fi
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# \n - start input on new line, again to support copy-paste into bash script
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PS1="${PS1}${COLOURS["$PC","PS"]}\\n"
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PS1="${PS1}\[\e[0;3${LASTB};1m\]"${SEP}"\[\e[0m\]\n"
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export PS1
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