#!/bin/bash set -euo pipefail IFS= tsvread() { IFS=' ' read -r "$@" } warn() { echo >&2 "$@" } dt() { date -d "${*:-}" +%Y-%m-%d\ %a } showday() { local date=$1 win=$2 case $date in *\ Mon) echo ; echo -n "${date% *} " ;; esac echo -n " " } fill_dates() { while [ $date_expect != $date -a $date_expect \< $date -a $date_expect \< $future ]; do showday $date_expect '' date_expect=`dt $date_expect 1 day` done } convert() { echo " focus " while tsvread focus && [ -n "$focus" ]; do echo -n "

$focus

" future=`dt 7 days` date_expect= while tsvread date win && [ -n "$date" ]; do date=`dt $date` if [ -z $date_expect ]; then dow=`date -d $date +%u` delta=$[1-dow] date_expect=`dt $date $delta days` fi fill_dates showday $date "$win" date_expect=`dt $date 1 day` done date=`dt sun 1 day` fill_dates echo ; echo '

' done echo ' ' } convert