Auto-sync from catchthesethighs
This commit is contained in:
Aaron D. Lee
@@ -1,145 +1,102 @@
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#!/usr/bin/env zsh
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# ============================================================================
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# Dynamic MOTD (zsh) — PARSE-SAFE GRID LAYOUT
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# MOTD — Width-Safe, Color-Safe, Reload-Safe
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# ============================================================================
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# ---------------------------- Configuration ---------------------------------
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# ---------------------------- Guards -----------------------------------------
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MOTD_ENABLED="${MOTD_ENABLED:-true}"
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MOTD_MAX_WIDTH=80
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MOTD_LABEL_WIDTH=12
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MOTD_ONCE_VAR="__MOTD_SHOWN"
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[[ -o interactive ]] || return
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[[ -n $__MOTD_SHOWN ]] && return
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typeset -g __MOTD_SHOWN=1
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# ---------------------------- Configuration ----------------------------------
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BOX_WIDTH=78 # total width INCLUDING borders
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INNER_WIDTH=$(( BOX_WIDTH - 2 ))
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LABEL_WIDTH=12
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# ---------------------------- Colors -----------------------------------------
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autoload -Uz colors && colors
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C_RESET="%f%k"
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C_DIM="%F{242}"
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C_HEAD="%B%F{39}"
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C_LABEL="%F{51}"
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C_OK="%F{82}"
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C_RESET="%f%b"
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# ---------------------------- Utilities --------------------------------------
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# ---------------------------- Low-level helpers ------------------------------
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_strip_colors() {
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local s="$1"
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s="${s//\%\{/%}"
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s="${s//\%\}/%}"
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print -r -- "${(S%%)s}"
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repeat_char() {
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local ch="$1" n="$2"
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printf '%*s' "$n" '' | tr ' ' "$ch"
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}
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_term_width() {
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print ${COLUMNS:-$(tput cols 2>/dev/null || echo 80)}
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pad_right() {
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local s="$1" w="$2"
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printf '%-*s' "$w" "$s"
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}
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_box_width() {
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local w=$(_term_width)
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(( w > MOTD_MAX_WIDTH )) && w=$MOTD_MAX_WIDTH
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print $w
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center_text() {
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local s="$1" w="$2"
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local len=${#s}
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(( len >= w )) && { print "${s[1,w]}"; return }
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local pad=$(( (w - len) / 2 ))
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printf '%*s%s%*s' "$pad" '' "$s" "$(( w - len - pad ))" ''
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}
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_hr_top() {
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local w=$(_box_width)
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print -P -- "${C_DIM}┌${(l:$((w-2))::─:)}┐${C_RESET}"
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# ---------------------------- Box primitives ---------------------------------
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box_top() {
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print "${C_DIM}┌$(repeat_char '─' $INNER_WIDTH)┐${C_RESET}"
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}
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_hr_bottom() {
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local w=$(_box_width)
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print -P -- "${C_DIM}└${(l:$((w-2))::─:)}┘${C_RESET}"
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box_bottom() {
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print "${C_DIM}└$(repeat_char '─' $INNER_WIDTH)┘${C_RESET}"
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}
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_header() {
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box_blank() {
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print "${C_DIM}│$(repeat_char ' ' $INNER_WIDTH)│${C_RESET}"
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}
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box_line() {
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local content="$1"
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content="$(pad_right "$content" "$INNER_WIDTH")"
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print "${C_DIM}│${C_RESET}${content}${C_DIM}│${C_RESET}"
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}
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# ---------------------------- Content builders -------------------------------
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header_line() {
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local text="$1"
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local w=$(_box_width)
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local inner=$(( w - 2 ))
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# Strip color + force ASCII dash to avoid Unicode width issues
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local raw="$(_strip_colors "$text" | sed 's/—/-/')"
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(( ${#raw} > inner )) && raw="${raw[1,inner]}"
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local pad=$(( (inner - ${#raw}) / 2 ))
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local rpad=$(( inner - ${#raw} - pad ))
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print -P -- \
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"${C_DIM}│${C_RESET}${(l:$pad:: :)}${text}${(l:$rpad:: :)}${C_DIM}│${C_RESET}"
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box_line "$(center_text "$text" "$INNER_WIDTH")"
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}
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_message() {
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local msg="$1"
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local w=$(_box_width)
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local inner=$(( w - 2 ))
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local raw="$(_strip_colors "$msg")"
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(( ${#raw} > inner )) && msg="${msg[1,inner]}"
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local fill=$(( inner - ${#raw} ))
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print -P -- \
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"${C_DIM}│${C_RESET}${msg}${(l:$fill:: :)}${C_DIM}│${C_RESET}"
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row_line() {
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local label="$1" value="$2"
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local left="$(pad_right "$label" "$LABEL_WIDTH")"
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box_line " ${left} ${value}"
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}
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_blank() {
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local w=$(_box_width)
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print -P -- "${C_DIM}│${C_RESET}$(printf '%*s' $((w-2)) '')${C_DIM}│${C_RESET}"
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}
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# ---------------------------- Info providers ---------------------------------
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_row() {
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local label="$1"
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local value="$2"
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get_os() { uname -sr }
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get_uptime() { uptime | sed 's/.*up *//' | cut -d',' -f1 }
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get_load() { uptime | awk -F'load average:' '{print $2}' | xargs }
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get_mem() { free -h | awk '/Mem:/ {print $3 "/" $2}' }
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get_disk() { df -h / | awk 'NR==2 {print $3 "/" $2 " (" $5 ")"}' }
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local w=$(_box_width)
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local value_width=$(( w - 4 - MOTD_LABEL_WIDTH ))
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# ---------------------------- Render -----------------------------------------
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# Truncate value safely
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local raw="$(_strip_colors "$value")"
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if (( ${#raw} > value_width )); then
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value="${value[1,value_width]}"
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fi
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# Recalculate after truncation
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raw="$(_strip_colors "$value")"
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local pad_len=$(( value_width - ${#raw} ))
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(( pad_len < 0 )) && pad_len=0
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printf -v lpad "%-*s" "$MOTD_LABEL_WIDTH" "$label"
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printf -v vpad "%*s" "$pad_len" ""
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print -P -- \
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"${C_DIM}│${C_RESET} ${C_LABEL}${lpad}${C_RESET} ${value}${vpad}${C_DIM}│${C_RESET}"
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}
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# ---------------------------- Info Providers ---------------------------------
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_get_os() { uname -sr }
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_get_uptime() { uptime | sed 's/.*up *//' | cut -d',' -f1 }
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_get_load() { uptime | awk -F'load average:' '{print $2}' | xargs }
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_get_mem() { free -h | awk '/Mem:/ {print $3 "/" $2}' }
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_get_disk() {
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df -h / | awk 'NR==2 {print $3 "/" $2 " (" $5 ")"}'
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}
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# ---------------------------- MOTD -------------------------------------------
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show_motd() {
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[[ -o interactive ]] || return
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[[ "$MOTD_ENABLED" != true ]] && return
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[[ -n ${(P)MOTD_ONCE_VAR} ]] && return
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typeset -g ${MOTD_ONCE_VAR}=1
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_hr_top
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_header "${C_HEAD} $(hostname) ${C_RESET}- ${C_DIM}$(_get_os)${C_RESET}"
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_blank
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_row "Uptime" "$(_get_uptime)"
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_row "Load" "$(_get_load)"
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_row "Memory" "$(_get_mem)"
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_row "Disk" "$(_get_disk)"
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_blank
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_message "${C_OK}System up to date${C_RESET}"
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_hr_bottom
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box_top
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header_line "${C_HEAD}$(hostname)${C_RESET} - ${C_DIM}$(get_os)${C_RESET}"
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box_blank
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row_line "${C_LABEL}Uptime${C_RESET}" "$(get_uptime)"
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row_line "${C_LABEL}Load${C_RESET}" "$(get_load)"
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row_line "${C_LABEL}Memory${C_RESET}" "$(get_mem)"
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row_line "${C_LABEL}Disk${C_RESET}" "$(get_disk)"
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box_blank
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box_line " ${C_OK}System up to date${C_RESET}"
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box_bottom
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print
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}
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show_motd
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