busybox/scripts/usage_compressed

#!/bin/sh

loc="$1"

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

echo 'static const char packed_usage[] = '
"$loc"/usage | bzip2 -1 | od -v -t x1 \
| $SED -e 's/^[^ ]*//' -e 's/ \(..\)/\\x\1/g' -e 's/^\(.*\)$/"\1"/' || exit 1
echo ';'
sz=`"$loc"/usage | wc -c` || exit 1
echo '#define SIZEOF_usage_messages' `expr 0 + $sz`
Patch from Dennis Vlasenko to add the option to compress help text. 2006-04-27 23:34:46 +00:00			`#!/bin/sh`

			`loc="$1"`

			`test "$loc" \|\| loc=.`
- check for existing usage binary, so it get's more obvious that the toplevel Makefile uses the wrong path to the binary (it's in top_builddir and not in top_srcdir) 2006-05-21 10:45:01 +00:00			`test -x "$loc/usage" \|\| exit 1`
Patch from Dennis Vlasenko to add the option to compress help text. 2006-04-27 23:34:46 +00:00
			`echo 'static const char packed_usage[] = '`
Since we have less than 100k of usage.h data anyway, using bzip -9 is silly. That says use 900k chunks when compressing, which needs about 4 megs of data structures to undo the Burrows-Wheeler transform. Switching it down to bzip -1 (100k chunks) should have no impact on the compression (since it still all fits in one chunk) but should reduce runtime decompression memory requirements to something like 500k. Still larger than gunzip, but not egregiously so. 2006-05-30 19:19:45 +00:00			`"$loc"/usage \| bzip2 -1 \| od -v -t x1 \`
- use the SED given by the user - use the portable `` instead of $(). There is no bbsh, so this is needed. 2006-05-26 13:28:39 +00:00			`\| $SED -e 's/^[^ ]//' -e 's/ \(..\)/\\x\1/g' -e 's/^\(.\)$/"\1"/' \|\| exit 1`
Patch from Dennis Vlasenko to add the option to compress help text. 2006-04-27 23:34:46 +00:00			`echo ';'`
- use the SED given by the user - use the portable `` instead of $(). There is no bbsh, so this is needed. 2006-05-26 13:28:39 +00:00			sz=`"$loc"/usage \| wc -c` \|\| exit 1
			echo '#define SIZEOF_usage_messages' `expr 0 + $sz`