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#!/bin/bash
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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ORANGE='\033[0;33m'
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BLUE='\033[0;34m'
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NC='\033[0m' # No Color
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# https://stackoverflow.com/questions/5947742/how-to-change-the-output-color-of-echo-in-linux
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prompt() {
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case ${1} in
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"-s" | "--success")
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printf "${GREEN}%s${NC}\n" "${2}"
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;;
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"-e" | "--error")
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printf "${RED}%s${NC}\n" "${2}"
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;;
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"-w" | "--warning")
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printf "${ORANGE}%s${NC}\n" "${2}"
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;;
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"-i" | "--info")
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printf "${BLUE}%s${NC}\n" "${2}"
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;;
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*)
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printf "${GREEN}%s${NC}\n" "${2}"
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;;
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esac
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}
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_usage() {
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printf "%s" \
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"Usage: sh ${0##*/} [ options ]
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-h | --help => Show this help.
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-i | --install => Install the config.
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-r | --remove => Remove the config.
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-u | --update => Update the existing config without removing existing stuff.
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"
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}
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_eval_exit() {
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status=$1
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suc_msg=$2
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err_msg=$3
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case $status in
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0)
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prompt -s "${suc_msg}"
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;;
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*)
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prompt -e "${err_msg}"
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;;
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esac
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}
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_check_dependencies() {
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_error_dependencies() {
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prompt -r "Error: Install ${1} before proceeding."
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exit 1
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}
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command -v git 1>/dev/null || _error_dependencies git
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return 0
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}
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_install() {
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_check_dependencies
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}
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_remove() {
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prompt -i "-> Cleaning config ($HOME/.config/nvim/)"
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# rm -rf "$HOME/.config/nvim/"
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prompt -i "-> Cleaning miscellaneous ($HOME/.local/share/nvim/)"
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# rm -rf "$HOME/.local/share/nvim/"
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prompt -i "-> Cleaning cache ($HOME/.cache/nvim/)"
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# rm -rf "$HOME/.cache/nvim/"
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}
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# _update() {}
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_init_settings() {
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no_backup="false"
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install="false"
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uninstall="false"
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}
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_clean_arg() {
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arg=$1
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if [[ "$arg" == "--"* ]]; then
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echo "${arg:2}"
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elif [[ "$arg" == "-"* ]]; then
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echo "${arg:1}"
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fi
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}
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_parse_args() {
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local args_func=$1
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local argv=("$@")
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local argc=${#argv[@]}
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local skip=0
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_skip_ahead() {
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amount=$1
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skip=$((skip + amount))
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}
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_clean_arg() {
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arg=$1
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if [[ "$arg" == "--"* ]]; then
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echo "${arg:2}"
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elif [[ "$arg" == "-"* ]]; then
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echo "${arg:1}"
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fi
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}
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for j in "${!argv[@]}"; do
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if [[ ${skip} -gt 0 ]]; then
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left=$((argc - j))
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while [[ ${skip} > ${left} ]]; do ((skip--)); done
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skip=$((skip - 1))
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continue
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fi
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case ${argv[j]} in
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--*) # End of all options.
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case ${argv[j]} in
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--) # End of all options.
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break
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;;
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*)
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eval "${eval_args}" "$(_clean_arg "${argv[j]}")" "$j"
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;;
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esac
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;;
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-*)
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tangled_args=$(_clean_arg "${argv[j]}")
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for ((k = 0; k < ${#tangled_args}; k++)); do
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eval "${eval_args}" "${tangled_args:$k:1}" "$j"
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done
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;;
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*)
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prompt -w "Warning: flag ''${argv[j]}' not recognized"
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;;
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esac
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done
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}
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main() {
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local argv=("$@")
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local argc=${#argv[@]}
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local skip=0
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assert_arg() {
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var=$1
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index=$2
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case ${var} in
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h | help)
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_usage
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;;
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i | install)
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prompt -i "installing..."
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;;
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r | remove)
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prompt -i "removing..."
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;;
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# p | --path
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*)
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prompt -w "Warning: flag '${var}' not recognized"
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;;
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esac
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}
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_skip_ahead() {
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amount=$1
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skip=$((skip + amount))
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}
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# works for:
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# 1. normal flags (e.g. -h,--help)
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# 2. nested flags (e.g. -ivh)
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# 3. space sperated flags and args (e.g. --option argument)
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# 4. equal separated flags and args (e.g. --option=argument)
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for j in "${!argv[@]}"; do
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if [[ ${skip} -gt 0 ]]; then
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left=$((argc - j))
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while [[ ${skip} > ${left} ]]; do ((skip--)); done
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skip=$((skip - 1))
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continue
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fi
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case ${argv[j]} in
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--*) # End of all options.
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case ${argv[j]} in
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--) # End of all options.
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break
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;;
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*)
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assert_arg "$(_clean_arg "${argv[j]}")" "$j"
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;;
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esac
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;;
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-*)
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tangled_args=$(_clean_arg "${argv[j]}")
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for ((k = 0; k < ${#tangled_args}; k++)); do
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assert_arg "${tangled_args:$k:1}" "$j"
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done
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;;
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*)
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prompt -w "Warning: flag ''${argv[j]}' not recognized"
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;;
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esac
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done
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}
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init() {
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if [ $# -eq 0 ]; then
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prompt -e "ERROR: This script needs at least one argument"
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else
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_init_settings
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main "${@}"
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fi
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}
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init "${@}"
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