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#!/usr/bin/env bash
# ==================================================
# KoolDots (2026)
# Project URL: https://github.com/LinuxBeginnings
# License: GNU GPLv3
# SPDX-License-Identifier: GPL-3.0-or-later
# ==================================================
# Launch preferred terminal with fallback handling.
# Usage:
# LaunchTerminal.sh "<preferred-terminal-cmd>" [payload-command]
# Examples:
# LaunchTerminal.sh "kitty"
# LaunchTerminal.sh "ghostty" "yazi"
set -u
notify_msg() {
local urgency="${1:-normal}"
local body="${2:-}"
if command -v notify-send >/dev/null 2>&1; then
notify-send -u "$urgency" "KooL Launchers" "$body"
fi
}
trim() {
local value="${1:-}"
value="${value#"${value%%[![:space:]]*}"}"
value="${value%"${value##*[![:space:]]}"}"
printf '%s' "$value"
}
shell_quote() {
local value="${1:-}"
printf "'%s'" "${value//\'/\'\\\'\'}"
}
command_bin_from_string() {
local cmd
cmd="$(trim "${1:-}")"
[[ -n "$cmd" ]] || return 1
(
eval "set -- $cmd"
printf '%s' "${1:-}"
) 2>/dev/null
}
command_exists_from_string() {
local bin
bin="$(command_bin_from_string "${1:-}" 2>/dev/null || true)"
[[ -n "$bin" ]] || return 1
command -v "$bin" >/dev/null 2>&1
}
launch_command_string() {
local cmd
cmd="$(trim "${1:-}")"
[[ -n "$cmd" ]] || return 1
if ! command_exists_from_string "$cmd"; then
return 127
fi
(
eval "exec $cmd"
) >/dev/null 2>&1 &
local pid=$!
sleep 0.35
if kill -0 "$pid" >/dev/null 2>&1; then
disown "$pid" >/dev/null 2>&1 || true
return 0
fi
wait "$pid"
local rc=$?
[[ $rc -eq 0 ]]
}
build_terminal_command() {
local term_cmd payload bin q_payload
term_cmd="$(trim "${1:-}")"
payload="$(trim "${2:-}")"
if [[ -z "$payload" ]]; then
printf '%s' "$term_cmd"
return 0
fi
bin="$(command_bin_from_string "$term_cmd" 2>/dev/null || true)"
q_payload="$(shell_quote "$payload")"
case "$bin" in
gnome-terminal)
printf '%s -- %s' "$term_cmd" "$q_payload"
;;
wezterm)
case "$term_cmd" in
*" start "* | "wezterm start")
printf '%s -- %s' "$term_cmd" "$q_payload"
;;
*)
printf '%s start -- %s' "$term_cmd" "$q_payload"
;;
esac
;;
*)
printf '%s -e %s' "$term_cmd" "$q_payload"
;;
esac
}
append_unique_candidate() {
local candidate
candidate="$(trim "${1:-}")"
[[ -n "$candidate" ]] || return 0
local existing
for existing in "${CANDIDATES[@]}"; do
[[ "$existing" == "$candidate" ]] && return 0
done
CANDIDATES+=("$candidate")
}
preferred_term="$(trim "${1:-${TERMINAL:-}}")"
payload_cmd="$(trim "${2:-}")"
declare -a CANDIDATES=()
append_unique_candidate "$preferred_term"
append_unique_candidate "kitty"
append_unique_candidate "ghostty"
append_unique_candidate "alacritty"
append_unique_candidate "wezterm"
append_unique_candidate "konsole"
append_unique_candidate "gnome-terminal"
reported_preferred_issue=0
candidate_cmd=""
for candidate in "${CANDIDATES[@]}"; do
candidate_cmd="$(build_terminal_command "$candidate" "$payload_cmd")"
if launch_command_string "$candidate_cmd"; then
exit 0
fi
if [[ $reported_preferred_issue -eq 0 && -n "$preferred_term" && "$candidate" == "$preferred_term" ]]; then
if ! command_exists_from_string "$preferred_term"; then
notify_msg normal "Preferred terminal '$preferred_term' is not installed. Falling back."
else
notify_msg normal "Preferred terminal '$preferred_term' failed to launch. Falling back."
fi
reported_preferred_issue=1
fi
done
if [[ -n "$payload_cmd" ]]; then
notify_msg critical "Unable to launch terminal for command '$payload_cmd'."
else
notify_msg critical "Unable to launch terminal. Install one of: kitty, ghostty, alacritty, wezterm, konsole, gnome-terminal."
fi
exit 1
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