#!/bin/bash

SITE=https://bisqwit.iki.fi/jutut/kuvat/programming_examples/dcpu16/
FILES=(
    ins_test_v1_dat.dasm16
    ins_test_v2.dasm16 ins_test_v2_dat.dasm16 ins_test_v2_doc.txt
    ins_test_v3_dat.dasm16 ins_test_v3_doc.txt
    ins_test_v4.dasm16 ins_test_v4_dat.dasm16 ins_test_v4_doc.txt
    ins_test_v5.dasm16 ins_test_v5_dat.dasm16 ins_test_v5_doc.txt
)

for f in ${FILES[*]} ; do
    if [ \! -f ${f} ] ; then
        echo "Downloading ${f}"
        wget -4 --quiet "${SITE}${f}"
    fi
done

for f in *_dat.dasm16 ; do
    hd="${f}.xxd"
    if [ \! -f ${hd} ] ; then
        echo "Creating ${hd}"
        awk 'BEGIN {printf("%08d: ", 0)} {printf("%04x ", $2)} NR%8==0 {printf("\n%08x: ", 2*NR)} END {printf("\n")}' <${f} >${hd}
    fi
done

for hd in *_dat.dasm16.xxd ; do
    bin=$(echo "${hd}" | sed 's/_dat.dasm16.xxd$/.bin/')
    if [ \! -f ${bin} ] ; then
        echo "Creating ${bin}"
        xxd -r <${hd} | dd if=/dev/stdin of=${bin} bs=2 conv=swab >${bin}
    fi
done