#!/bin/bash
# $ pdflatex somefile.tex && preview.sh somefile.pdf
# Preview.app will close the file and reopen it
# You must run this command first to update your Preview.app bundle to support
# basic AppleScript
# $ defaults write /Applications/Preview.app/Contents/Info NSAppleScriptEnabled -bool YES

filename="${1}"
if [ ! -r "${filename}" ]; then
	echo "Error, could not read ${filename}"
	exit 1
fi

osascript <<EOF
tell application "Preview"
	repeat with theWindow in windows
		if name of theWindow starts with "$(basename "${filename}")" then
			close theWindow
		end if
	end repeat
end tell
EOF

open "${filename}"