punktdateien-bashrc/startup.sh

#!/usr/bin/env bash
# shellcheck disable=SC2154
set -eo pipefail

# Cancel execution of system-wide punktdateien-bashrc if user-wide installation is detected
if [ -n "${BASHRCD_SYSTEM}" ] && [ -d "${HOME}/.bashrc.d" ] && [ -f "${HOME}/.bashrc.d/startup.sh" ]; then
	set +eo pipefail
	return 0
fi

# Define variables
export "BASHRCD_FALLBACK=exec env --ignore-environment bash --norc --noprofile"

if [ -z "${BASHRCD_SYSTEM}" ]; then
	export "BASHRCD_HOMEDIR=${HOME:?}/.bashrc.d"
else
	export "BASHRCD_HOMEDIR=/etc/bashrc.d"
fi

# cd into to home directory
cd "${BASHRCD_HOMEDIR}" || (
 echo ":: Can't cd into ${HOME:?}/.bashrc.d"
 ${BASHRCD_FALLBACK}
)

# Initialize basic stuff
[[ -f "init.d/path.sh" ]] && source "init.d/path.sh"
[[ -f "init.d/variables.sh" ]] && source "init.d/variables.sh"
[[ -f "init.d/aliases.sh" ]] && source "init.d/aliases.sh"
[[ -f "init.d/functions.sh" ]] && source "init.d/functions.sh"

# Create new configuration file
if [ ! -f "config.sh" ]; then
	if [ -n "${BASHRCD_SYSTEM}" ] && [ "${UID}" != "0" ]; then
		echo ":: Warning: Can't create system-wide configuration file as normal user."
	else	
		$(which cat) << EOF >> config.sh
#!/usr/bin/env bash
CONFIG_FLOW_CONTROL=0
CONFIG_AUTOSAVE_HISTORY=1
CONFIG_CUSTOM_PROMPT=1
CONFIG_EDITOR=nano
CONFIG_REPLACE_PKGMGR_ORIGINAL=pacman
CONFIG_REPLACE_PKGMGR_REPLACEMENT=paru
EOF
	fi
fi

# Load configuration file
source "config.sh"

# Process configuration changes
# -> Flow control
[[ "${CONFIG_FLOW_CONTROl}" == "0" ]] && stty -ixon
[[ "${CONFIG_FLOW_CONTROL}" == "1" ]] && stty ixon

# -> Autosave history
[[ "${CONFIG_AUTOSAVE_HISTORY}" == "1" ]] && export "PROMPT_COMMAND=history -a"

# -> Custom prompt
if [[ "${CONFIG_CUSTOM_PROMPT}" == "1" ]]; then
 export "PS1=\[\033[38;5;33m\][\[$(tput sgr0)\]\[\033[38;5;38m\]\u\[$(tput sgr0)\]\[\033[38;5;33m\]@\[$(tput sgr0)\]\[\033[38;5;38m\]\H\[$(tput sgr0)\]\[\033[38;5;33m\]:\[$(tput sgr0)\]\[\033[38;5;38m\]\W\[$(tput sgr0)\] \[$(tput sgr0)\]\[\033[38;5;214m\]\$?\[$(tput sgr0)\]\[\033[38;5;33m\]]\\$\[$(tput sgr0)\] "
 export "PS2=\[\033[38;5;196m\][incomplete]: \033[0;10m"
 export "PS4=\${0}:\${LINENO}+ "
fi

# -> Editor
export "EDITOR=${CONFIG_EDITOR}"

# -> Package manager replacement
if [ -n "${CONFIG_REPLACE_PKGMGR_ORIGINAL}" ] && [ -n "${CONFIG_REPLACE_PKGMGR_REPLACEMENT}" ]; then
 # shellcheck disable=SC2139
 alias "${CONFIG_REPLACE_PKGMGR_ORIGINAL}=${CONFIG_REPLACE_PKGMGR_REPLACEMENT}"
fi


# Initialize shell programs
for file in programs.d/*; do
 # shellcheck disable=SC1090
 source "${file}"
done

# Run startup scripts
for file in startup.d/*; do
 # shellcheck disable=SC1090
 source "${file}"
done

unset BASHRCD_SYSTEM
set +eo pipefail