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85 lines
2.2 KiB
85 lines
2.2 KiB
#!/usr/bin/env bash
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## CONSTANTS
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BASE_ARCHIVE_URL='https://git.artcode.re/miaou/miaou-bash/archive'
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BASE_TAG_URL='https://git.artcode.re/api/v1/repos/miaou/miaou-bash/tags'
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BASH_SHELL='/bin/bash'
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## FUNCTIONS
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function upgrade {
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echo UPGRADE
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execute_miaou_lib self-upgrade
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}
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function install {
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echo INSTALL
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local latest_tag
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latest_tag=$(
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curl -s "$BASE_TAG_URL" |
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grep '"name":' |
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cut -d '"' -f4
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)
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echo "latest_tag=$latest_tag"
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local tempfile='/tmp/miaou-bash-latest.tar.gz'
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curl -so "$tempfile" "${BASE_ARCHIVE_URL}/${latest_tag}.tar.gz"
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sudo tar -xzf "$tempfile" --directory "$(dirname "$MIAOU_BASH_DIR")"
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rm "$tempfile"
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execute_miaou_lib initiate
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echo "miaou-bash successfully $deployment_type_adjective"
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}
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function assert_supported_distro {
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if ! grep -E '^ID=debian|^ID_LIKE=debian' /etc/os-release &&
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! grep -E '^ID=arch|^ID_LIKE=arch' /etc/os-release; then
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local distro
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distro=$(grep -oP '^ID=\K(.*)' /etc/os-release)
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>&2 echo "unsupported GNU/Linux distribution: $distro"
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>&2 echo 'only debian-like OR arch-like currently supported'
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return 10
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fi
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}
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function once_installed {
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[[ -v MIAOU_BASH_DIR && -d "$MIAOU_BASH_DIR" &&
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-L /etc/inputrc &&
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"$(readlink /etc/inputrc)" == "$MIAOU_BASH_DIR"/etc/inputrc ]]
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}
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function execute_miaou_lib {
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sudo -E "$MIAOU_BASH_DIR"/bin/miaou-bash "$MIAOU_BASH_DIR"/lib/"$1".bash
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}
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function assert_bash {
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if [[ $(basename "$SHELL") != 'bash' ]]; then
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>&2 echo "MIAOU ERROR: you are running on SHELL=$SHELL rather than 'bash'!"
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return 11
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fi
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}
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function sudo_root {
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if [[ "$UID" -ne 0 ]] && ! sudo -vp 'SUDO privilege required: '; then
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>&2 echo "canceled"
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return 12
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fi
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}
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## MAIN
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set -Eeuo pipefail
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if assert_supported_distro && assert_bash && sudo_root; then
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if [[ ! -v MIAOU_BASH_DIR ]]; then
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MIAOU_BASH_DIR=/opt/miaou-bash
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export MIAOU_BASH_DIR
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fi
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deployment_type_adjective="${1:-installed}" # `miaou-bash --self-upgrade` provides the 'upgrade' term
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if once_installed; then upgrade; else install; fi
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if [[ $deployment_type_adjective == 'installed' ]]; then
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exec bash -l
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fi
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else
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>&2 echo "MIAOU_BASH_ERROR: requirements failure"
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fi
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