di-butler.sh

#!/usr/bin/env zsh -f
# Purpose: 	Download and install the latest version of Butler
#
# From:		Timothy J. Luoma
# Mail:		luomat at gmail dot com
# Date:		2016-05-22
# Verified:	2025-02-24

NAME="$0:t:r"

INSTALL_TO='/Applications/Butler.app'

HOMEPAGE="https://manytricks.com/butler/"

DOWNLOAD_PAGE="https://manytricks.com/download/butler"

SUMMARY="Butler's purpose is to ease all those routine tasks you do every day: controlling iTunes, opening programs and documents, switching users, searching for stuff on the web, and more."

XML_FEED='https://manytricks.com/butler/butlercast.xml'

if [[ -e "$HOME/.path" ]]
then
	source "$HOME/.path"
fi

	# "sparkle:version" also exists in the XML_FEED, but 'shortVersionString' is the important one
INFO=($(curl -sfL "$XML_FEED" \
		| tr -s ' ' '\012' \
		| egrep 'sparkle:shortVersionString=|url=' \
		| head -2 \
		| sort \
		| awk -F'"' '/^/{print $2}'))

	# "Sparkle" will always come before "url" because of "sort"
LATEST_VERSION="$INFO[1]"
URL="$INFO[2]"

	# If any of these are blank, we should not continue
if [ "$INFO" = "" -o "$LATEST_VERSION" = "" -o "$URL" = "" ]
then
	echo "$NAME: Error: bad data received:\nINFO: ${INFO}\nLATEST_VERSION: ${LATEST_VERSION}\nURL: ${URL}"
	exit 1
fi

if [[ -e "$INSTALL_TO" ]]
then

	INSTALLED_VERSION=`defaults read "$INSTALL_TO/Contents/Info" CFBundleShortVersionString`

	if [[ "$LATEST_VERSION" == "$INSTALLED_VERSION" ]]
	then
		echo "$NAME: Up-To-Date ($INSTALLED_VERSION)"
		exit 0
	fi

	autoload is-at-least

	is-at-least "$LATEST_VERSION" "$INSTALLED_VERSION"

	if [ "$?" = "0" ]
	then
		echo "$NAME: Up-To-Date ($LATEST_VERSION)"
		exit 0
	fi

	echo "$NAME: Outdated (Installed = $INSTALLED_VERSION vs Latest = $LATEST_VERSION)"

fi

FILENAME="$HOME/Downloads/$INSTALL_TO:t:r-${LATEST_VERSION}.dmg"

if (( $+commands[lynx] ))
then

  RELEASE_NOTES_URL="https://manytricks.com/butler/guide/releasenotes.html"

	( echo "$NAME: Release Notes for $INSTALL_TO:t:r:" ;

		(curl -sfl "$RELEASE_NOTES_URL" | sed '1,/<body/d; /<\/ul>/,$d' ; echo '</ul>') \
		| lynx -dump -nomargins -width='10000' -assume_charset=UTF-8 -pseudo_inlines -stdin \
		| sed '/./,/^$/!d' ;
		echo "\nSource: <$RELEASE_NOTES_URL>" ) \
	| tee "$FILENAME:r.txt"

fi

echo "$NAME: Downloading '$URL' to '$FILENAME':"

curl --continue-at - --fail --location --output "$FILENAME" "$URL"

EXIT="$?"

	## exit 22 means 'the file was already fully downloaded'
[ "$EXIT" != "0" -a "$EXIT" != "22" ] && echo "$NAME: Download of $URL failed (EXIT = $EXIT)" && exit 0

[[ ! -e "$FILENAME" ]] && echo "$NAME: $FILENAME does not exist." && exit 0

[[ ! -s "$FILENAME" ]] && echo "$NAME: $FILENAME is zero bytes." && rm -f "$FILENAME" && exit 0

echo "$NAME: Mounting $FILENAME:"

MNTPNT=$(hdiutil attach -nobrowse -plist "$FILENAME" 2>/dev/null \
	| fgrep -A 1 '<key>mount-point</key>' \
	| tail -1 \
	| sed 's#</string>.*##g ; s#.*<string>##g')

if [[ "$MNTPNT" == "" ]]
then
	echo "$NAME: MNTPNT is empty"
	exit 1
fi

if [[ -e "$INSTALL_TO" ]]
then
		# Quit app, if running
	pgrep -xq "$INSTALL_TO:t:r" \
	&& LAUNCH='yes' \
	&& osascript -e "tell application \"$INSTALL_TO:t:r\" to quit"

		# move installed version to trash
	mv -vf "$INSTALL_TO" "$HOME/.Trash/$INSTALL_TO:t:r.${INSTALLED_VERSION}_${INSTALLED_BUILD}.app"
fi

echo "$NAME: Installing '$MNTPNT/$INSTALL_TO:t' to '$INSTALL_TO': "

ditto --noqtn -v "$MNTPNT/$INSTALL_TO:t" "$INSTALL_TO"

EXIT="$?"

if [[ "$EXIT" == "0" ]]
then
	echo "$NAME: Successfully installed $INSTALL_TO"
else
	echo "$NAME: ditto failed"

	exit 1
fi

echo "$NAME: Unmounting $MNTPNT:"

diskutil eject "$MNTPNT"

exit 0
#EOF