mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-08-20 02:43:41 +03:00
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12925 3c298f89-4303-0410-b956-a3cf2f4a3e73
220 lines
4.5 KiB
Bash
Executable File
220 lines
4.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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BASEDIR="$PWD"
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ENVDIR="$PWD/env"
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usage() {
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cat <<EOF
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Usage: $0 [options] <command> [arguments]
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Commands:
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help This help text
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list List environments
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clear Delete all environment and revert to flat config/files
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new <name> Create a new environment
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switch <name> Switch to a different environment
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delete <name> Delete an environment
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rename <newname> Rename the current environment
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diff Show differences between current state and environment
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save Save your changes to the environment
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revert Revert your changes since last save
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Options:
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EOF
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exit ${1:-1}
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}
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error() {
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echo "$0: $*"
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exit 1
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}
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ask_bool() {
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local DEFAULT="$1"; shift
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local def defstr val
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case "$DEFAULT" in
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1) def=0; defstr="Y/n";;
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0) def=1; defstr="y/N";;
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*) def=; defstr="y/n";;
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esac
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while [ -z "$val" ]; do
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local VAL
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echo -n "$* ($defstr): "
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read VAL
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case "$VAL" in
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y*|Y*) val=0;;
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n*|N*) val=1;;
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*) val="$def";;
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esac
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done
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return "$val"
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}
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env_init() {
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local CREATE="$1"
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if [ -z "$CREATE" ]; then
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[ -d "$ENVDIR" ] || exit 0
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fi
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[ -x "$(which git 2>/dev/null)" ] || error "Git is not installed"
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mkdir -p "$ENVDIR" || error "Failed to create the environment directory"
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cd "$ENVDIR" || error "Failed to switch to the environment directory"
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[ -d .git ] || {
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git init &&
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touch .config &&
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mkdir files &&
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git add . &&
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git commit -q -m "Initial import"
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} || {
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rm -rf .git
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error "Failed to initialize the environment directory"
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}
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}
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env_sync_data() {
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[ \! -L "$BASEDIR/.config" -a -f "$BASEDIR/.config" ] && mv "$BASEDIR/.config" "$ENVDIR"
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git add .
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git add -u
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}
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env_sync() {
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local STR="$1"
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env_sync_data
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git commit -m "${STR:-Update} at $(date)"
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}
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env_link_config() {
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rm -f "$BASEDIR/.config"
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ln -s env/.config "$BASEDIR/.config"
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mkdir -p "$ENVDIR/files"
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[ -L "$BASEDIR/files" ] || ln -s env/files "$BASEDIR/files"
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}
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env_do_reset() {
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git reset --hard HEAD
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git clean -d -f
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}
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env_list() {
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env_init
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git branch | grep -vE '^. master$'
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}
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env_diff() {
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env_init
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env_sync_data
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git diff --cached
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env_link_config
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}
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env_save() {
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env_init
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env_sync
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env_link_config
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}
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env_revert() {
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env_init
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env_do_reset
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env_link_config
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}
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env_ask_sync() {
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env_sync_data
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LINES="$(env_diff | wc -l)" # implies env_init
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[ "$LINES" -gt 0 ] && {
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if ask_bool 1 "Do you want to save your changes"; then
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env_sync
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else
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env_do_reset
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fi
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}
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}
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env_clear() {
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env_init
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[ -L "$BASEDIR/.config" ] && rm -f "$BASEDIR/.config"
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[ -L "$BASEDIR/files" ] && rm -f "$BASEDIR/files"
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[ -f "$ENVDIR/.config" ] || ( cd "$ENVDIR/files" && find | grep -vE '^\.$' > /dev/null )
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env_sync_data
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if ask_bool 1 "Do you want to keep your current config and files"; then
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mkdir -p "$BASEDIR/files"
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cp -a "$ENVDIR/files/*" "$BASEDIR/files" 2>/dev/null >/dev/null
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cp "$ENVDIR/.config" "$BASEDIR/"
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else
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rm -rf "$BASEDIR/files" "$BASEDIR/.config"
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fi
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cd "$BASEDIR"
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rm -rf "$ENVDIR"
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}
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env_delete() {
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local name="${1##*/}"
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env_init
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[ -z "$name" ] && usage
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branch="$(git branch | grep '^\* ' | awk '{print $2}')"
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[ "$name" = "$branch" ] && error "cannot delete the currently selected environment"
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git branch -D "$name"
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}
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env_switch() {
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local name="${1##*/}"
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[ -z "$name" ] && usage
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env_init
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env_ask_sync
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git checkout "$name" || error "environment '$name' not found"
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env_link_config
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}
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env_rename() {
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local NAME="${1##*/}"
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env_init
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git branch -m "$NAME"
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}
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env_new() {
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local NAME="$1"
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local branch
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local from="master"
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[ -z "$NAME" ] && usage
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env_init 1
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branch="$(git branch | grep '^\* ' | awk '{print $2}')"
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if [ -n "$branch" -a "$branch" != "master" ]; then
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env_ask_sync
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if ask_bool 0 "Do you want to clone the current environment?"; then
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from="$branch"
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fi
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rm -f "$BASEDIR/.config" "$BASEDIR/files"
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fi
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git checkout -b "$1" "$from"
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if [ -f "$BASEDIR/.config" -o -d "$BASEDIR/files" ]; then
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if ask_bool 1 "Do you want to keep your current config and files?"; then
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[ -d "$BASEDIR/files" -a \! -L "$BASEDIR/files" ] && {
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mv "$BASEDIR/files/"* "$ENVDIR/" 2>/dev/null
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rmdir "$BASEDIR/files"
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}
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env_sync
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else
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rm -rf "$BASEDIR/.config" "$BASEDIR/files"
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fi
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fi
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env_link_config
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}
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COMMAND="$1"; shift
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case "$COMMAND" in
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help) usage 0;;
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new) env_new "$@";;
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list) env_list "$@";;
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clear) env_clear "$@";;
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switch) env_switch "$@";;
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delete) env_delete "$@";;
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rename) env_rename "$@";;
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diff) env_diff "$@";;
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save) env_save "$@";;
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revert) env_revert "$@";;
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*) usage;;
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esac
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