mirror of
https://github.com/ohmyzsh/ohmyzsh.git
synced 2024-11-23 22:30:07 +00:00
29b99c2c7b
NOTE: this feature is in alpha / preview mode, it is not guaranteed to work 100% of the time in all cases. If you experience any issues, open an issue or search for an open one describing your same situation. To use this, use the zstyle update mode settings [1] with the value `background-alpha`: zstyle ':omz:update' mode background-alpha [1] https://github.com/ohmyzsh/ohmyzsh#getting-updates
295 lines
9.5 KiB
Bash
295 lines
9.5 KiB
Bash
# Migrate .zsh-update file to $ZSH_CACHE_DIR
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if [[ -f ~/.zsh-update && ! -f "${ZSH_CACHE_DIR}/.zsh-update" ]]; then
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mv ~/.zsh-update "${ZSH_CACHE_DIR}/.zsh-update"
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fi
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# Get user's update preferences
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#
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# Supported update modes:
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# - prompt (default): the user is asked before updating when it's time to update
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# - auto: the update is performed automatically when it's time
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# - reminder: a reminder is shown to the user when it's time to update
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# - background-alpha: an experimental update-on-the-background option
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# - disabled: automatic update is turned off
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zstyle -s ':omz:update' mode update_mode || {
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update_mode=prompt
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# If the mode zstyle setting is not set, support old-style settings
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[[ "$DISABLE_UPDATE_PROMPT" != true ]] || update_mode=auto
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[[ "$DISABLE_AUTO_UPDATE" != true ]] || update_mode=disabled
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}
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# Cancel update if:
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# - the automatic update is disabled.
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# - the current user doesn't have write permissions nor owns the $ZSH directory.
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# - is not run from a tty
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# - git is unavailable on the system.
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if [[ "$update_mode" = disabled ]] \
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|| [[ ! -w "$ZSH" || ! -O "$ZSH" ]] \
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|| [[ ! -t 1 ]] \
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|| ! command git --version 2>&1 >/dev/null; then
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unset update_mode
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return
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fi
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function current_epoch() {
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zmodload zsh/datetime
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echo $(( EPOCHSECONDS / 60 / 60 / 24 ))
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}
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function is_update_available() {
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local branch
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branch=${"$(builtin cd -q "$ZSH"; git config --local oh-my-zsh.branch)":-master}
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local remote remote_url remote_repo
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remote=${"$(builtin cd -q "$ZSH"; git config --local oh-my-zsh.remote)":-origin}
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remote_url=$(builtin cd -q "$ZSH"; git config remote.$remote.url)
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local repo
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case "$remote_url" in
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https://github.com/*) repo=${${remote_url#https://github.com/}%.git} ;;
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git@github.com:*) repo=${${remote_url#git@github.com:}%.git} ;;
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*)
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# If the remote is not using GitHub we can't check for updates
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# Let's assume there are updates
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return 0 ;;
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esac
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# If the remote repo is not the official one, let's assume there are updates available
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[[ "$repo" = ohmyzsh/ohmyzsh ]] || return 0
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local api_url="https://api.github.com/repos/${repo}/commits/${branch}"
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# Get local HEAD. If this fails assume there are updates
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local local_head
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local_head=$(builtin cd -q "$ZSH"; git rev-parse $branch 2>/dev/null) || return 0
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# Get remote HEAD. If no suitable command is found assume there are updates
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# On any other error, skip the update (connection may be down)
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local remote_head
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remote_head=$(
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if (( ${+commands[curl]} )); then
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curl --connect-timeout 2 -fsSL -H 'Accept: application/vnd.github.v3.sha' $api_url 2>/dev/null
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elif (( ${+commands[wget]} )); then
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wget -T 2 -O- --header='Accept: application/vnd.github.v3.sha' $api_url 2>/dev/null
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elif (( ${+commands[fetch]} )); then
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HTTP_ACCEPT='Accept: application/vnd.github.v3.sha' fetch -T 2 -o - $api_url 2>/dev/null
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else
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exit 0
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fi
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) || return 1
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# Compare local and remote HEADs (if they're equal there are no updates)
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[[ "$local_head" != "$remote_head" ]] || return 1
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# If local and remote HEADs don't match, check if there's a common ancestor
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# If the merge-base call fails, $remote_head might not be downloaded so assume there are updates
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local base
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base=$(builtin cd -q "$ZSH"; git merge-base $local_head $remote_head 2>/dev/null) || return 0
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# If the common ancestor ($base) is not $remote_head,
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# the local HEAD is older than the remote HEAD
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[[ $base != $remote_head ]]
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}
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function update_last_updated_file() {
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local exit_status="$1" error="$2"
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if [[ -z "${1}${2}" ]]; then
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echo "LAST_EPOCH=$(current_epoch)" >! "${ZSH_CACHE_DIR}/.zsh-update"
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return
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fi
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cat >! "${ZSH_CACHE_DIR}/.zsh-update" <<EOD
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LAST_EPOCH=$(current_epoch)
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EXIT_STATUS=${exit_status}
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ERROR='${error//\'/’}'
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EOD
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}
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function update_ohmyzsh() {
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local verbose_mode
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zstyle -s ':omz:update' verbose verbose_mode || verbose_mode=default
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if [[ "$update_mode" != background-alpha ]] \
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&& LANG= ZSH="$ZSH" zsh -f "$ZSH/tools/upgrade.sh" -i -v $verbose_mode; then
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update_last_updated_file
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return $?
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fi
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local exit_status error
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if error=$(LANG= ZSH="$ZSH" zsh -f "$ZSH/tools/upgrade.sh" -i -v silent 2>&1); then
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update_last_updated_file 0 "Update successful"
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else
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exit_status=$?
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update_last_updated_file $exit_status "$error"
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return $exit_status
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fi
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}
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function has_typed_input() {
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# Created by Philippe Troin <phil@fifi.org>
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# https://zsh.org/mla/users/2022/msg00062.html
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emulate -L zsh
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zmodload zsh/zselect
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# Back up stty settings prior to disabling canonical mode
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# Consider that no input can be typed if stty fails
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# (this might happen if stdin is not a terminal)
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local termios
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termios=$(stty --save 2>/dev/null) || return 1
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{
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# Disable canonical mode so that typed input counts
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# regardless of whether Enter was pressed
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stty -icanon
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# Poll stdin (fd 0) for data ready to be read
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zselect -t 0 -r 0
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return $?
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} always {
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# Restore stty settings
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stty $termios
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}
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}
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function handle_update() {
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() {
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emulate -L zsh
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local epoch_target mtime option LAST_EPOCH
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# Remove lock directory if older than a day
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zmodload zsh/datetime
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zmodload -F zsh/stat b:zstat
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if mtime=$(zstat +mtime "$ZSH/log/update.lock" 2>/dev/null); then
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if (( (mtime + 3600 * 24) < EPOCHSECONDS )); then
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command rm -rf "$ZSH/log/update.lock"
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fi
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fi
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# Check for lock directory
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if ! command mkdir "$ZSH/log/update.lock" 2>/dev/null; then
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return
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fi
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# Remove lock directory on exit. `return $ret` is important for when trapping a SIGINT:
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# The return status from the function is handled specially. If it is zero, the signal is
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# assumed to have been handled, and execution continues normally. Otherwise, the shell
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# will behave as interrupted except that the return status of the trap is retained.
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# This means that for a CTRL+C, the trap needs to return the same exit status so that
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# the shell actually exits what it's running.
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trap "
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ret=\$?
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unset update_mode
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unset -f current_epoch is_update_available update_last_updated_file update_ohmyzsh handle_update 2>/dev/null
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command rm -rf '$ZSH/log/update.lock'
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return \$ret
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" EXIT INT QUIT
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# Create or update .zsh-update file if missing or malformed
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if ! source "${ZSH_CACHE_DIR}/.zsh-update" 2>/dev/null || [[ -z "$LAST_EPOCH" ]]; then
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update_last_updated_file
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return
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fi
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# Number of days before trying to update again
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zstyle -s ':omz:update' frequency epoch_target || epoch_target=${UPDATE_ZSH_DAYS:-13}
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# Test if enough time has passed until the next update
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if (( ( $(current_epoch) - $LAST_EPOCH ) < $epoch_target )); then
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return
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fi
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# Test if Oh My Zsh directory is a git repository
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if ! (builtin cd -q "$ZSH" && LANG= git rev-parse &>/dev/null); then
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echo >&2 "[oh-my-zsh] Can't update: not a git repository."
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return
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fi
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# Check if there are updates available before proceeding
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if ! is_update_available; then
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update_last_updated_file
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return
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fi
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# If in reminder mode or user has typed input, show reminder and exit
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if [[ "$update_mode" = reminder ]] || { [[ "$update_mode" != background-alpha ]] && has_typed_input }; then
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printf '\r\e[0K' # move cursor to first column and clear whole line
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echo "[oh-my-zsh] It's time to update! You can do that by running \`omz update\`"
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return 0
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fi
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# Don't ask for confirmation before updating if in auto mode
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if [[ "$update_mode" = (auto|background-alpha) ]]; then
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update_ohmyzsh
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return $?
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fi
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# Ask for confirmation and only update on 'y', 'Y' or Enter
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# Otherwise just show a reminder for how to update
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echo -n "[oh-my-zsh] Would you like to update? [Y/n] "
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read -r -k 1 option
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[[ "$option" = $'\n' ]] || echo
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case "$option" in
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[yY$'\n']) update_ohmyzsh ;;
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[nN]) update_last_updated_file ;&
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*) echo "[oh-my-zsh] You can update manually by running \`omz update\`" ;;
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esac
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}
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unset update_mode
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unset -f current_epoch is_update_available update_last_updated_file update_ohmyzsh handle_update
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}
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case "$update_mode" in
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background-alpha)
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autoload -Uz add-zsh-hook
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_omz_bg_update() {
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# do the update in a subshell
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(handle_update) &|
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# register update results function
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add-zsh-hook precmd _omz_bg_update_status
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# deregister background function
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add-zsh-hook -d precmd _omz_bg_update
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unset -f _omz_bg_update
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}
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_omz_bg_update_status() {
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{
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local LAST_EPOCH EXIT_STATUS ERROR
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if [[ ! -f "$ZSH_CACHE_DIR"/.zsh-update ]]; then
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return 1
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fi
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# check update results until timeout is reached
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. "$ZSH_CACHE_DIR/.zsh-update"
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if [[ -z "$EXIT_STATUS" || -z "$ERROR" ]]; then
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return 1
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fi
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if [[ "$EXIT_STATUS" -eq 0 ]]; then
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print -P "\n%F{green}[oh-my-zsh] Update successful.%f"
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return 0
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elif [[ "$EXIT_STATUS" -ne 0 ]]; then
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print -P "\n%F{red}[oh-my-zsh] There was an error updating:%f"
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printf "\n${fg[yellow]}%s${reset_color}" "$ERROR"
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return 0
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fi
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} always {
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if (( TRY_BLOCK_ERROR == 0 )); then
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# if last update results have been handled, remove them from the status file
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update_last_updated_file
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# deregister background function
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add-zsh-hook -d precmd _omz_bg_update_status
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unset -f _omz_bg_update_status
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fi
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}
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}
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add-zsh-hook precmd _omz_bg_update
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;;
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*)
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handle_update ;;
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esac
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