hush/applets/usage_compressed
Denys Vlasenko 263cff9a2f do not store 1st two bytes of compressed help text
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-08-20 23:34:01 +02:00

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#!/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 | dd bs=2 skip=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`