#!/bin/sh

target="$1"
loc="$2"

test "$target" || exit 1
test "$loc" || loc=.
test -x "$loc/usage" || exit 1
test "$SED" || SED=sed

sz=`"$loc/usage" | wc -c` || exit 1

exec >"$target"

echo 'static const char packed_usage[] ALIGN1 = {'

## Breaks on big-endian systems!
## # Extra effort to avoid using "od -t x1": -t is not available
## # in non-CONFIG_DESKTOPed busybox od
## 
## "$loc/usage" | bzip2 -1 | od -v -x \
## | $SED -e 's/^[^ ]*//' \
## | $SED -e 's/ //g' \
## | grep -v '^$' \
## | $SED -e 's/\(..\)\(..\)/0x\2,0x\1,/g'

"$loc/usage" | bzip2 -1 | od -v -t x1 \
| $SED -e 's/^[^ ]*//' \
| $SED -e 's/ //g' \
| grep -v '^$' \
| $SED -e 's/\(..\)/0x\1,/g'

echo '};'
echo '#define SIZEOF_usage_messages' `expr 0 + $sz`
