--- /dev/null
+#!/bin/sh
+
+edit_sender(){
+ id="$1"
+ if [ -f "senders/$id" ]; then
+ address="$(cat "senders/$id")"
+ fi
+ [ "$address" ] || address="Name
+Street
+City
+
+Phone:
+000 000000
+
+Tax no.
+xxx / 000 / ###
+"
+ printf '
+ [form method="POST" action="/update_sender"
+ [hidden "id" "%s"]
+ <textarea name="address" placeholder="address">%s</textarea>
+ [submit "update" "update" Update]
+ ]' \
+ "$(HTML $id)" \
+ "$(HTML "${address}")"
+}
+
+list_senders(){
+ [ -d senders/ ] && for s in senders/*; do
+ address=$(cat "$s")
+ [ "$address" ] || address="(no address)"
+ printf '[div .sender .address <!--
+ -->%s[a href="/senders/%s" Edit]]
+ ' "$(HTML "$address")" "$(HTML "${s#senders/}")"
+ done
+}
+
+update_sender(){
+ id="$(POST id |checkid)"
+ if [ "$(POST update)" = update -a "$id" ]; then
+ mkdir -p senders
+ POST address >"senders/$id"
+ fi
+}