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| #!/usr/bin/env sh | |
| set -eu | |
| # Logger | |
| export VERBOSITY=3 | |
| GET_DATE() { | |
| case "$(uname -s)" in | |
| "Darwin") date -u ;; | |
| *) date -u --rfc-3339=seconds ;; | |
| esac | |
| } | |
| DEBUG() { | |
| if [ "$VERBOSITY" -gt 3 ]; then | |
| COLOR_DARK_GRAY "$(GET_DATE) [$(basename "$0")] DEBUG: $*" | |
| fi | |
| } | |
| INFO() { | |
| if [ "$VERBOSITY" -gt 2 ]; then | |
| COLOR_WHITE "$(GET_DATE) [$(basename "$0")] INFO: $*" | |
| fi | |
| } | |
| WARN() { | |
| if [ "$VERBOSITY" -gt 1 ]; then | |
| COLOR_YELLOW "$(GET_DATE) [$(basename "$0")] WARN: $*" | |
| fi | |
| } | |
| ERROR() { | |
| if [ "$VERBOSITY" -gt 0 ]; then | |
| COLOR_RED "$(GET_DATE) [$(basename "$0")] ERROR: $*" | |
| fi | |
| } | |
| FATAL() { | |
| COLOR_RED "$(GET_DATE) [$(basename "$0")] FATAL: $*" | |
| exit 1 | |
| } | |
| COLOR_DARK_GRAY() { | |
| printf "\033[1;30m%s\033[0m\n" "$*" | |
| } | |
| COLOR_RED() { | |
| printf "\033[1;31m%s\033[0m\n" "$*" | |
| } | |
| COLOR_GREEN() { | |
| printf "\033[1;32m%s\033[0m\n" "$*" | |
| } | |
| COLOR_YELLOW() { | |
| printf "\033[1;33m%s\033[0m\n" "$*" | |
| } | |
| COLOR_WHITE() { | |
| printf "\033[1;37m%s\033[0m\n" "$*" | |
| } | |
| # Pre-Flights | |
| for i in "dpkg" "grep" "sed" "tr" "curl" "xargs" "wget" "apt" "rm" "id" "uname" "date" "basename" | |
| do | |
| if ! type "$i" > /dev/null 2>&1; then | |
| FATAL "Missing requirement. Binary '$i' is not present." | |
| fi | |
| done | |
| IS_ROOT() { [ "${EUID:-$(id -u)}" -eq 0 ]; } | |
| if ! IS_ROOT; then | |
| FATAL "Insufficient permissions. Use 'sudo $(basename "$0")' instead." | |
| fi | |
| # Main | |
| PKG_NAME="discord" | |
| DOWNLOAD_URL="https://discordapp.com/api/download?platform=linux&format=deb" | |
| INFO "Checking local version..." | |
| LOCAL_PKG=$(dpkg -s "$PKG_NAME" | grep '^Version:' | sed -r "s/Version: (.*)/$PKG_NAME-\1\.deb/" | tr -d '\r') | |
| INFO "Success! $LOCAL_PKG found." | |
| INFO "Checking remote version..." | |
| REMOTE_PKG=$(curl -sIL $DOWNLOAD_URL | grep '^location:' | sed 's/location: //' | xargs basename | tr -d '\r') | |
| INFO "Success! $REMOTE_PKG found." | |
| if [ "$LOCAL_PKG" = "$REMOTE_PKG" ]; then | |
| INFO "Package is up-to-date." | |
| else | |
| INFO "Downloading ${REMOTE_PKG}, please wait..." | |
| wget -qO "/tmp/${REMOTE_PKG}" "$DOWNLOAD_URL" | |
| INFO "Installing ${REMOTE_PKG}, please wait..." | |
| apt install "/tmp/${REMOTE_PKG}" | |
| rm -f "/tmp/${REMOTE_PKG}" | |
| INFO "Done!" | |
| fi |
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