# You need to match a double quoted string with the following regex
# [^"\\]*(\\.[^"\\]*)*",?
#
# But to get the text between double quotes use some ( )
# ([^"\\]*(\\.[^"\\]*)*)",?
# gets text inside quotes as $1
#
# but you also have non quoted fields, thus
# ([^,]+),?
# which should match things optionally followed by a comma
#
# and then a match for separation commas
# ,
#
# this must be repeated with m/.../g