148 lines
4.3 KiB
Bash
148 lines
4.3 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 "$-" in
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*i*) ;;
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*) return 0 ;;
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esac
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# -------------------------------------------------
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# Nerd Font detection + fallback controls
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#
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# Env overrides:
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# PS1_FORCE_ASCII=1 -> always use ASCII/Unicode fallback separators
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# PS1_FORCE_NF=1 -> always use Nerd Font separators
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# -------------------------------------------------
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_ps1_has_nf() {
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# Explicit overrides win
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if [[ "${PS1_FORCE_ASCII:-0}" == "1" ]]; then
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return 1
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fi
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if [[ "${PS1_FORCE_NF:-0}" == "1" ]]; then
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return 0
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fi
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# Heuristic: if fc-list exists and shows a Nerd Font family, assume NF works.
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if command -v fc-list >/dev/null 2>&1; then
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# Keep it generic: any "Nerd Font" is good enough
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if fc-list 2>/dev/null | grep -qi "Nerd Font"; then
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return 0
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fi
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fi
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# Otherwise: safe fallback
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return 1
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}
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# -------------------------------------------------
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# Time-based emoji (Europe/Oslo)
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# -------------------------------------------------
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_ps1_symbol() {
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local h m hh mm
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hh=$(TZ=Europe/Oslo date +%H); mm=$(TZ=Europe/Oslo date +%M)
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h=$((10#$hh)); m=$((10#$mm))
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if (( h >= 5 && h <= 8 )); then echo "🌅" # tidlig
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elif (( h >= 9 && h <= 10 )); then echo "☕" # formiddag
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elif (( h == 11 && m < 30 )); then echo "🥪" # lunsj
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elif (( (h == 11 && m >= 30) || (h >= 12 && h <= 15) )); then echo "💻" # dag
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elif (( h == 16 )); then echo "🍲" # middag
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elif (( h >= 17 && h <= 22 )); then echo "🌆" # kveld
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else echo "🌙" # natt
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fi
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}
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# -------------------------------------------------
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# Path shortening (keeps /home/user visible)
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# Compatible with bash 3.2+ (no negative array indexes)
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# -------------------------------------------------
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_ps1_path() {
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local p="$PWD"
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local parts=()
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IFS='/' read -ra parts <<< "$p"
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# If short, keep full
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if ((${#parts[@]} < 6)); then
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echo "$p"
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return
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fi
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# / + first two comps + … + last two comps
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local n=${#parts[@]}
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local a="${parts[1]}"
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local b="${parts[2]}"
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local c="${parts[$((n-2))]}"
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local d="${parts[$((n-1))]}"
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echo "/${a}/${b}/…/${c}/${d}"
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}
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# -------------------------------------------------
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# Dynamic vars updated before each prompt
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# -------------------------------------------------
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__PS1_SYM=""
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__PS1_PATH=""
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__PS1_STATUS=0
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__PS1_USE_NF=0
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_ps1_update() {
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__PS1_STATUS=$?
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__PS1_SYM="$(_ps1_symbol)"
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__PS1_PATH="$(_ps1_path)"
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if _ps1_has_nf; then __PS1_USE_NF=1; else __PS1_USE_NF=0; fi
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}
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# -------------------------------------------------
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# Enable / disable
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# -------------------------------------------------
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__PS1_PREV_PROMPT_COMMAND="${PROMPT_COMMAND-}"
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ps1_on() {
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PROMPT_COMMAND="_ps1_update"
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local RST="\[\e[0m\]"
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# Two-zone palette (as requested)
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# Zone 1: gray-blue pastel (date/time/user)
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local Z1_BG="\[\e[48;5;61m\]"
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local Z1_FG="\[\e[38;5;255m\]"
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# Zone 2: turquoise / cool green (host/path)
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local Z2_BG="\[\e[48;5;37m\]"
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local Z2_FG="\[\e[38;5;255m\]"
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local PATH_FG="\[\e[38;5;194m\]"
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# Frame line
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local FRAME="\[\e[38;5;60m\]"
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# Status colors
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local OK="\[\e[38;5;76m\]"
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local BAD="\[\e[38;5;203m\]"
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# Build separators based on NF availability (evaluated at prompt time via $__PS1_USE_NF)
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# We avoid embedding raw variables that bash re-parses weirdly by using $(...) inside PS1 only for
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# selecting literal separators (safe), while keeping all color escapes static and balanced.
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local SEP_EXPR='\$( [ "$__PS1_USE_NF" -eq 1 ] && printf "" || printf "▶" )'
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local LEFT_EXPR='\$( [ "$__PS1_USE_NF" -eq 1 ] && printf "" || printf "[" )'
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local RIGHT_EXPR='\$( [ "$__PS1_USE_NF" -eq 1 ] && printf "" || printf "]" )'
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local PROMPT_SYM="\$( [ \$__PS1_STATUS -eq 0 ] && printf '${OK}' || printf '${BAD}' )➜${RST}"
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# Keep exact order: date -> time -> user -> host -> path, then newline, then prompt
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# Note: \d, \A, \u, \h are PS1 escapes.
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PS1="\
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${FRAME}╭─${RST}\
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${Z1_BG}${Z1_FG}${LEFT_EXPR} \d \A \u ${RST}${Z1_BG}${Z2_BG}${Z2_FG}${SEP_EXPR}${RST}\
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${Z2_BG}${Z2_FG} @\h ${PATH_FG}\${__PS1_PATH} ${RST}${Z2_BG}${Z2_FG}${RIGHT_EXPR}${RST}\
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\n${FRAME}╰── ${RST}${PROMPT_SYM} \${__PS1_SYM} "
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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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