8a217dd420
Always pop stashed changes for Homebrew developers and only checkout original branches for them (to avoid users who don't understand Git ending up "stuck" on branches).
394 lines
11 KiB
Bash
394 lines
11 KiB
Bash
#: * `update` [`--merge`]:
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#: Fetch the newest version of Homebrew and all formulae from GitHub using
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#: `git`(1).
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#:
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#: If `--merge` is specified then `git merge` is used to include updates
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#: (rather than `git rebase`).
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# Hide shellcheck complaint:
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# shellcheck source=/dev/null
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source "$HOMEBREW_LIBRARY/Homebrew/utils/lock.sh"
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git_init_if_necessary() {
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if [[ -n "$HOMEBREW_OSX" ]]
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then
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OFFICIAL_REMOTE="https://github.com/Homebrew/brew.git"
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else
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OFFICIAL_REMOTE="https://github.com/Linuxbrew/brew.git"
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fi
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if [[ ! -d ".git" ]]
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then
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set -e
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trap '{ rm -rf .git; exit 1; }' EXIT
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git init
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git config --bool core.autocrlf false
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git config remote.origin.url "$OFFICIAL_REMOTE"
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git config remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"
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git fetch --force --depth=1 origin refs/heads/master:refs/remotes/origin/master
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git reset --hard origin/master
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SKIP_FETCH_HOMEBREW_REPOSITORY=1
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set +e
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trap - EXIT
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fi
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}
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rename_taps_dir_if_necessary() {
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local tap_dir
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local tap_dir_basename
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local tap_dir_hyphens
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local user
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local repo
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for tap_dir in "$HOMEBREW_LIBRARY"/Taps/*
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do
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[[ -d "$tap_dir/.git" ]] || continue
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tap_dir_basename="${tap_dir##*/}"
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if [[ "$tap_dir_basename" = *"-"* ]]
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then
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# only replace the *last* dash: yes, tap filenames suck
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user="$(echo "${tap_dir_basename%-*}" | tr "[:upper:]" "[:lower:]")"
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repo="$(echo "${tap_dir_basename:${#user}+1}" | tr "[:upper:]" "[:lower:]")"
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mkdir -p "$HOMEBREW_LIBRARY/Taps/$user"
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mv "$tap_dir" "$HOMEBREW_LIBRARY/Taps/$user/homebrew-$repo"
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tap_dir_hyphens="${tap_dir_basename//[^\-]}"
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if [[ ${#tap_dir_hyphens} -gt 1 ]]
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then
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echo "Homebrew changed the structure of Taps like <someuser>/<sometap>." >&2
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echo "So you may need to rename $HOMEBREW_LIBRARY/Taps/$user/homebrew-$repo manually." >&2
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fi
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else
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echo "Homebrew changed the structure of Taps like <someuser>/<sometap>. " >&2
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echo "$tap_dir is an incorrect Tap path." >&2
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echo "So you may need to rename it to $HOMEBREW_LIBRARY/Taps/<someuser>/homebrew-<sometap> manually." >&2
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fi
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done
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}
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repo_var() {
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local repo_var
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repo_var="$1"
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if [[ "$repo_var" = "$HOMEBREW_REPOSITORY" ]]
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then
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repo_var=""
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else
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repo_var="${repo_var#"$HOMEBREW_LIBRARY/Taps"}"
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repo_var="$(echo -n "$repo_var" | tr -C "A-Za-z0-9" "_" | tr "[:lower:]" "[:upper:]")"
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fi
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echo "$repo_var"
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}
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upstream_branch() {
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local upstream_branch
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upstream_branch="$(git symbolic-ref refs/remotes/origin/HEAD 2>/dev/null)"
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upstream_branch="${upstream_branch#refs/remotes/origin/}"
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[[ -z "$upstream_branch" ]] && upstream_branch="master"
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echo "$upstream_branch"
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}
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read_current_revision() {
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git rev-parse -q --verify HEAD
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}
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pop_stash() {
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[[ -z "$STASHED" ]] && return
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git stash pop "${QUIET_ARGS[@]}"
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if [[ -n "$HOMEBREW_VERBOSE" ]]
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then
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echo "Restoring your stashed changes to $DIR:"
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git status --short --untracked-files
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fi
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unset STASHED
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}
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pop_stash_message() {
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[[ -z "$STASHED" ]] && return
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echo "To restore the stashed changes to $DIR run:"
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echo " 'cd $DIR && git stash pop'"
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unset STASHED
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}
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reset_on_interrupt() {
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if [[ "$INITIAL_BRANCH" != "$UPSTREAM_BRANCH" && -n "$INITIAL_BRANCH" ]]
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then
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git checkout "$INITIAL_BRANCH"
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fi
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if [[ -n "$INITIAL_REVISION" ]]
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then
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git rebase --abort &>/dev/null
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git merge --abort &>/dev/null
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git reset --hard "$INITIAL_REVISION" "${QUIET_ARGS[@]}"
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fi
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if [[ -n "$HOMEBREW_DEVELOPER" ]]
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then
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pop_stash
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else
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pop_stash_message
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fi
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exit 130
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}
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pull() {
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local DIR
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local TAP_VAR
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DIR="$1"
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cd "$DIR" || return
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TAP_VAR=$(repo_var "$DIR")
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unset STASHED
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# The upstream repository's default branch may not be master;
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# check refs/remotes/origin/HEAD to see what the default
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# origin branch name is, and use that. If not set, fall back to "master".
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INITIAL_BRANCH="$(git symbolic-ref --short HEAD 2>/dev/null)"
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UPSTREAM_BRANCH="$(upstream_branch)"
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# Used for testing purposes, e.g., for testing formula migration after
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# renaming it in the currently checked-out branch. To test run
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# "brew update --simulate-from-current-branch"
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if [[ -n "$HOMEBREW_SIMULATE_FROM_CURRENT_BRANCH" ]]
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then
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INITIAL_REVISION="$(git rev-parse -q --verify "$UPSTREAM_BRANCH")"
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CURRENT_REVISION="$(read_current_revision)"
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export HOMEBREW_UPDATE_BEFORE"$TAP_VAR"="$INITIAL_REVISION"
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export HOMEBREW_UPDATE_AFTER"$TAP_VAR"="$CURRENT_REVISION"
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if [[ "$INITIAL_REVISION" != "$CURRENT_REVISION" ]]
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then
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HOMEBREW_UPDATED="1"
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fi
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if ! git merge-base --is-ancestor "$INITIAL_REVISION" "$CURRENT_REVISION"
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then
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odie "Your $DIR HEAD is not a descendant of $UPSTREAM_BRANCH!"
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fi
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return
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fi
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trap reset_on_interrupt SIGINT
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if [[ -n "$(git status --untracked-files=all --porcelain 2>/dev/null)" ]]
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then
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if [[ -n "$HOMEBREW_VERBOSE" ]]
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then
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echo "Stashing uncommitted changes to $DIR."
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git status --short --untracked-files=all
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fi
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git merge --abort &>/dev/null
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git rebase --abort &>/dev/null
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git -c "user.email=brew-update@localhost" \
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-c "user.name=brew update" \
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stash save --include-untracked "${QUIET_ARGS[@]}"
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git reset --hard "${QUIET_ARGS[@]}"
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STASHED="1"
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fi
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if [[ "$INITIAL_BRANCH" != "$UPSTREAM_BRANCH" && -n "$INITIAL_BRANCH" ]]
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then
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# Recreate and check out `#{upstream_branch}` if unable to fast-forward
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# it to `origin/#{@upstream_branch}`. Otherwise, just check it out.
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if git merge-base --is-ancestor "$UPSTREAM_BRANCH" "origin/$UPSTREAM_BRANCH" &>/dev/null
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then
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git checkout --force "$UPSTREAM_BRANCH" "${QUIET_ARGS[@]}"
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else
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git checkout --force -B "$UPSTREAM_BRANCH" "origin/$UPSTREAM_BRANCH" "${QUIET_ARGS[@]}"
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fi
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fi
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INITIAL_REVISION="$(read_current_revision)"
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export HOMEBREW_UPDATE_BEFORE"$TAP_VAR"="$INITIAL_REVISION"
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# ensure we don't munge line endings on checkout
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git config core.autocrlf false
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if [[ -z "$HOMEBREW_MERGE" ]]
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then
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git rebase "${QUIET_ARGS[@]}" "origin/$UPSTREAM_BRANCH"
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else
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git merge --no-edit --ff "${QUIET_ARGS[@]}" "origin/$UPSTREAM_BRANCH" \
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--strategy=recursive \
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--strategy-option=ours \
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--strategy-option=ignore-all-space
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fi
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CURRENT_REVISION="$(read_current_revision)"
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export HOMEBREW_UPDATE_AFTER"$TAP_VAR"="$CURRENT_REVISION"
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if [[ "$INITIAL_REVISION" != "$CURRENT_REVISION" ]]
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then
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HOMEBREW_UPDATED="1"
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fi
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trap '' SIGINT
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if [[ -n "$HOMEBREW_DEVELOPER" ]]
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then
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if [[ "$INITIAL_BRANCH" != "$UPSTREAM_BRANCH" && -n "$INITIAL_BRANCH" ]]
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then
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git checkout "$INITIAL_BRANCH"
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fi
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pop_stash
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else
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pop_stash_message
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fi
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trap - SIGINT
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}
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homebrew-update() {
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local option
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local DIR
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local UPSTREAM_BRANCH
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for option in "$@"
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do
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case "$option" in
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-\?|-h|--help|--usage) brew help update; exit $? ;;
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--verbose) HOMEBREW_VERBOSE=1 ;;
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--debug) HOMEBREW_DEBUG=1;;
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--merge) HOMEBREW_MERGE=1 ;;
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--simulate-from-current-branch) HOMEBREW_SIMULATE_FROM_CURRENT_BRANCH=1 ;;
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--preinstall) HOMEBREW_UPDATE_PREINSTALL=1 ;;
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--*) ;;
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-*)
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[[ "$option" = *v* ]] && HOMEBREW_VERBOSE=1;
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[[ "$option" = *d* ]] && HOMEBREW_DEBUG=1;
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;;
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*)
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odie <<-EOS
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This command updates brew itself, and does not take formula names.
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Use 'brew upgrade <formula>'.
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EOS
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;;
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esac
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done
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if [[ -n "$HOMEBREW_DEBUG" ]]
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then
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set -x
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fi
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# check permissions
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if [[ "$HOMEBREW_PREFIX" = "/usr/local" && ! -w /usr/local ]]
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then
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odie "/usr/local must be writable!"
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fi
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if [[ ! -w "$HOMEBREW_REPOSITORY" ]]
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then
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odie "$HOMEBREW_REPOSITORY must be writable!"
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fi
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if ! git --version >/dev/null 2>&1
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then
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# we cannot install brewed git if homebrew/core is unavailable.
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[[ -d "$HOMEBREW_LIBRARY/Taps/homebrew/homebrew-core" ]] && brew install git
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if ! git --version >/dev/null 2>&1
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then
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odie "Git must be installed and in your PATH!"
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fi
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fi
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export GIT_TERMINAL_PROMPT="0"
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export GIT_SSH_COMMAND="ssh -oBatchMode=yes"
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if [[ -z "$HOMEBREW_VERBOSE" ]]
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then
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QUIET_ARGS=(-q)
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else
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QUIET_ARGS=()
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fi
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# ensure GIT_CONFIG is unset as we need to operate on .git/config
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unset GIT_CONFIG
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# only allow one instance of brew update
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lock update
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chdir "$HOMEBREW_REPOSITORY"
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git_init_if_necessary
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# rename Taps directories
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# this procedure will be removed in the future if it seems unnecessary
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rename_taps_dir_if_necessary
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# kill all of subprocess on interrupt
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trap '{ pkill -P $$; wait; exit 130; }' SIGINT
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local update_failed_file="$HOMEBREW_REPOSITORY/.git/UPDATE_FAILED"
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rm -f "$update_failed_file"
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for DIR in "$HOMEBREW_REPOSITORY" "$HOMEBREW_LIBRARY"/Taps/*/*
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do
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[[ -d "$DIR/.git" ]] || continue
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[[ -n "$SKIP_FETCH_HOMEBREW_REPOSITORY" && "$DIR" = "$HOMEBREW_REPOSITORY" ]] && continue
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cd "$DIR" || continue
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UPSTREAM_BRANCH="$(upstream_branch)"
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# the refspec ensures that the default upstream branch gets updated
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(
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UPSTREAM_REPOSITORY_URL="$(git config remote.origin.url)"
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if [[ "$UPSTREAM_REPOSITORY_URL" = "https://github.com/"* ]]
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then
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UPSTREAM_REPOSITORY="${UPSTREAM_REPOSITORY_URL#https://github.com/}"
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UPSTREAM_REPOSITORY="${UPSTREAM_REPOSITORY%.git}"
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UPSTREAM_BRANCH_LOCAL_SHA="$(git rev-parse "refs/remotes/origin/$UPSTREAM_BRANCH")"
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# Only try to `git fetch` when the upstream branch is at a different SHA
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# (so the API does not return 304: unmodified).
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UPSTREAM_SHA_HTTP_CODE="$("$HOMEBREW_CURL" --silent '--max-time' 3 \
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--output /dev/null --write-out "%{http_code}" \
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--user-agent "$HOMEBREW_USER_AGENT_CURL" \
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--header "Accept: application/vnd.github.v3.sha" \
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--header "If-None-Match: \"$UPSTREAM_BRANCH_LOCAL_SHA\"" \
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"https://api.github.com/repos/$UPSTREAM_REPOSITORY/commits/$UPSTREAM_BRANCH")"
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[[ "$UPSTREAM_SHA_HTTP_CODE" = "304" ]] && exit
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elif [[ -n "$HOMEBREW_UPDATE_PREINSTALL" ]]
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then
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# Don't try to do a `git fetch` that may take longer than expected.
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exit
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fi
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if [[ -n "$HOMEBREW_UPDATE_PREINSTALL" ]]
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then
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git fetch --force "${QUIET_ARGS[@]}" origin \
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"refs/heads/$UPSTREAM_BRANCH:refs/remotes/origin/$UPSTREAM_BRANCH" 2>/dev/null
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else
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if ! git fetch --force "${QUIET_ARGS[@]}" origin \
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"refs/heads/$UPSTREAM_BRANCH:refs/remotes/origin/$UPSTREAM_BRANCH"
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then
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echo "Fetching $DIR failed!" >> "$update_failed_file"
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fi
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fi
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) &
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done
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wait
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trap - SIGINT
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if [[ -f "$update_failed_file" ]]
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then
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onoe < "$update_failed_file"
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rm -f "$update_failed_file"
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export HOMEBREW_UPDATE_FAILED="1"
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fi
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for DIR in "$HOMEBREW_REPOSITORY" "$HOMEBREW_LIBRARY"/Taps/*/*
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do
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[[ -d "$DIR/.git" ]] || continue
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pull "$DIR"
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done
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chdir "$HOMEBREW_REPOSITORY"
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if [[ -n "$HOMEBREW_UPDATED" || -n "$HOMEBREW_UPDATE_FAILED" ]]
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then
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brew update-report "$@"
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return $?
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elif [[ -z "$HOMEBREW_UPDATE_PREINSTALL" ]]
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then
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echo "Already up-to-date."
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fi
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}
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