busybox/scripts/embedded_scripts
Denys Vlasenko 43794ff45d scripts/embedded_scripts: do not add superfluous NUL to script_names[]
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-11-02 14:18:36 +01:00

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#!/bin/sh
target="$1"
loc="$2"
test "$target" || exit 1
test "$SED" || SED=sed
test "$DD" || DD=dd
# Some people were bitten by their system lacking a (proper) od
od -v -b </dev/null >/dev/null
if test $? != 0; then
echo 'od tool is not installed or cannot accept "-v -b" options'
exit 1
fi
exec >"$target.$$"
scripts=""
if [ -d "$loc" ]
then
scripts=$(cd $loc; ls * 2>/dev/null)
fi
n=$(echo $scripts | wc -w)
if [ $n -ne 0 ]
then
printf '#ifdef DEFINE_script_names\n'
printf 'const char script_names[] ALIGN1 = '
for i in $scripts
do
printf '"%s\\0"' $i
done
printf ';\n'
printf '#else\n'
printf 'extern const char script_names[] ALIGN1;\n'
printf '#endif\n'
fi
printf "#define NUM_SCRIPTS $n\n\n"
if [ $n -ne 0 ]
then
printf '#define UNPACKED_SCRIPTS_LENGTH '
for i in $scripts
do
cat $loc/$i
printf '\000'
done | wc -c
printf '#define PACKED_SCRIPTS \\\n'
for i in $scripts
do
cat $loc/$i
printf '\000'
done | bzip2 -1 | $DD bs=2 skip=1 2>/dev/null | od -v -b \
| grep -v '^ ' \
| $SED -e 's/^[^ ]*//' \
-e 's/ //g' \
-e '/^$/d' \
-e 's/\(...\)/0\1,/g' \
-e 's/$/ \\/'
printf '\n'
fi
mv -- "$target.$$" "$target"