#!/usr/bin/env -S awk -f
# Associate a isoform id to the length of the sequence

BEGIN {
    sequence_length=0
    isoform_id=""
}

/^>/ {
    if (isoform_id != "") {
        print isoform_id, sequence_length
    } else {
        isoform_id = $1
        gsub(">", "", isoform_id)
        sequence_length = 0
    }
}

/^[^>]/ {
    sequence_length += length($0)
}

END {
    if (isoform_id != "") {
        print isoform_id, sequence_length
    }
}