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#!/bin/bash
function xxd_i() {
var=$1
src_file=$2
dst_h_file=$3
dst_c_file=$4
# Generate `.h` file.
echo "Generating ${dst_h_file}..."
echo "#ifndef ${var}_H" > $dst_h_file
echo "#define ${var}_H" >> $dst_h_file
echo "extern unsigned char $var[];" >> $dst_h_file
echo "extern unsigned int ${var}_len;" >> $dst_h_file
echo '#endif' >> $dst_h_file
# Generate `.c` file.
echo "Generating ${dst_c_file}..."
printf '#include "%s"\n' $dst_h_file > $dst_c_file
echo "unsigned char $var[] = {" >> $dst_c_file
cnt=0
while IFS='' read line
do
for byte in $line
do
echo -n " 0x$byte," >> $dst_c_file
cnt=$((cnt+1))
done
# <() is syntax for Bash process substitution.
done < <(od -An -v -tx1 $src_file)
echo "};" >> $dst_c_file
echo "unsigned int ${var}_len = $cnt;" >> $dst_c_file
}
version=ac87d8bbb3915d5e7c880b97c102ffe22112335f
src_remote=https://github.com/urbit/urbit/raw/$version/bin/ivory.pill
src_file=ivory.pill
dst_h_file=ivory.h
dst_c_file=ivory.c
rm $dst_h_file $dst_c_file
echo "Downloading ivory pill from ${src_remote}"
curl -LJ -o $src_file $src_remote
xxd_i u3_Ivory_pill $src_file $dst_h_file $dst_c_file
rm $src_file
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