#
# takes a string in %Y%m%d%H%M%S and converts it to time_t
#

source ~/lib/sh/include
require freturn

timefmt_to_time_t ()
{
        local +i from=$1
        local +i to

        # `date -d', which we use to do the conversion, does not recognize
        # time in the input format, so we use an intermediary format it does:
        # %Y-%m-%dT%H%M%S

        # first make the %Y-%m-%d part
        to=${from:0:4}-${from:4:2}-${from:6:2}

        # now separate date from time with a `T' and then use %H%M%S
        to="${to} ${from:8:2}:${from:10:2}:${from:12:2}"

        # result (seconds since UNIX epoch) without padding
        #
        to=$(date -d "$to" +%-s)

        freturn $to
}
# vim:syn=sh:ft=sh