143 lines
3.6 KiB
Bash
143 lines
3.6 KiB
Bash
#!/usr/bin/env bash
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# Must be sourced
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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echo "Bruk: source ps1.sh"
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exit 1
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fi
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case "$-" in
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*i*) ;;
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*) return 0 ;;
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esac
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# -------------------------------------------------
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# Time-based symbol (Europe/Oslo)
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# Updates naturally when time passes (no session-lock).
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# -------------------------------------------------
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_ps1_symbol() {
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local hh mm h m
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hh="$(TZ=Europe/Oslo date +%H)"
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mm="$(TZ=Europe/Oslo date +%M)"
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h=$((10#$hh))
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m=$((10#$mm))
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if (( h >= 5 && h <= 8 )); then
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printf '%s' "🌅" # tidlig
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elif (( h >= 9 && h <= 10 )); then
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printf '%s' "☕" # formiddag
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elif (( h == 11 && m < 30 )); then
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printf '%s' "🥪" # lunsj
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elif (( (h == 11 && m >= 30) || (h >= 12 && h <= 15) )); then
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printf '%s' "💻" # dag
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elif (( h == 16 )); then
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printf '%s' "🍲" # middag
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elif (( h >= 17 && h <= 22 )); then
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printf '%s' "🌆" # kveld
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else
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printf '%s' "🌙" # natt
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fi
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}
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# -------------------------------------------------
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# Path shortening (keeps /home/user visible; shortens deeper paths)
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# Example:
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# /home/steffen/projects/very/long/path -> /home/steffen/…/long/path
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# -------------------------------------------------
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_ps1_path() {
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local p="$PWD"
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local max_tail=2 # keep last 2 path components
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local parts=()
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# Split path into array
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IFS='/' read -r -a parts <<< "$p"
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# If path is short enough, return it unchanged
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# Heuristic: fewer than 6 components -> keep full path
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if ((${#parts[@]} < 6)); then
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printf '%s' "$p"
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return
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fi
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# Build prefix: / + first 2 non-empty components (e.g. home/steffen)
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local prefix="/"
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local taken=0
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local i
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for ((i=0; i<${#parts[@]}; i++)); do
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[[ -z "${parts[i]}" ]] && continue
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prefix+="${parts[i]}"
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taken=$((taken+1))
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if (( taken >= 2 )); then
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break
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fi
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prefix+="/"
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done
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# Build tail: last N components
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local tail=""
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local count=0
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for ((i=${#parts[@]}-1; i>=0; i--)); do
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[[ -z "${parts[i]}" ]] && continue
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tail="/${parts[i]}${tail}"
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count=$((count+1))
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if (( count >= max_tail )); then
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break
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fi
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done
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printf '%s' "${prefix}/…${tail}"
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}
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# -------------------------------------------------
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# Build PS1
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# Adds:
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# 2) Exit-status feedback: arrow + $ turns red when last cmd failed
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# 3) Shorter path (but keeps /home/user visible)
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# -------------------------------------------------
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_ps1_build() {
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local sym path
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sym="$(_ps1_symbol)"
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path="$(_ps1_path)"
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# Pastel-ish 256 colors
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local BOX="\[\e[38;5;183m\]"
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local VAL="\[\e[38;5;117m\]"
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local ACC="\[\e[38;5;229m\]"
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local RST="\[\e[0m\]"
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# Status colors
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local OK="\[\e[38;5;76m\]" # green-ish
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local BAD="\[\e[38;5;203m\]" # red-ish
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# Arrow + $ changes color based on last exit code.
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# NOTE: PROMPT_COMMAND runs after the command; $? is last command status here.
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local status_color
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if [[ "${__PS1_LAST_STATUS:-0}" -eq 0 ]]; then
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status_color="$OK"
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else
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status_color="$BAD"
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fi
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local ps1
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ps1="${BOX}╭─(${ACC}\\d${BOX} ${ACC}\\A${BOX})-(${VAL}\\u${BOX}@${VAL}\\h${BOX})-(${VAL}${path}${BOX})${RST}\\n${BOX}╰──${status_color}➜ \\$${RST} ${sym} "
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printf '%s' "$ps1"
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}
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# -------------------------------------------------
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# Enable / disable
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# -------------------------------------------------
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__PS1_PREV_PROMPT_COMMAND="${PROMPT_COMMAND-}"
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ps1_on() {
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# Capture last command status each time before building PS1
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PROMPT_COMMAND='__PS1_LAST_STATUS=$?; _PS1="$(_ps1_build)"; PS1="$_PS1"'
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__PS1_LAST_STATUS=$?
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PS1="$(_ps1_build)"
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}
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ps1_off() {
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PROMPT_COMMAND="$__PS1_PREV_PROMPT_COMMAND"
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}
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