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#!/bin/sh
# Modified version of https://shiz.me/junk/code/fun/shar.sh
# The generated shell archive is automatically extracted to a
# temporary directory and the first archive member is executed.
set -e
if test $# -lt 2 ; then
echo "usage: $0 <output> <files>"
exit 1
fi
save() {
for i ; do
printf "%s\n" "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/"
done
echo " "
}
octal_mode() {
local mode
mode="$(ls -ld "$1" | awk '{ print $1 }' | tr '[A-Z]' '-' | cut -c2-)"
for i in 1 2 3 ; do
i=0
case "$mode" in r??*) i=$((i + 4)) ;; esac
case "$mode" in ?w?*) i=$((i + 2)) ;; esac
case "$mode" in ??-*) ;; ???*) i=$((i + 1)) ;; esac
printf "%d" "$i"
mode=$(echo "$mode" | cut -c4-)
done
}
out=$1
tmpout=$1.tmp
exe=$2
shift
rm -f "$tmpout"
for f ; do
if test -f "$f" ; then
cat "$f" >> "$tmpout"
fi
done
trap 'rm "$tmpout"' EXIT
clear=
for f ; do
if test -z "$clear" ; then
set --
clear=1
fi
mode=$(octal_mode "$f")
if test -f "$f" ; then
size=$(wc -c "$f" | awk '{ print $1 }')
echo "adding: $f (mode $mode, $size bytes)"
set -- "$@" "f+$mode+$size:$f"
elif test -d "$f" ; then
echo "adding directory: $f (mode $mode)"
set -- "$@" "d+$mode:$f"
else
echo "can't add unknown file type $f" >&2
fi
done
cat >"$out"<<HEADER
#!/bin/sh
set -e
outdir="\$(mktemp -d -p "\${TMPDIR:-/tmp}" .unshar-XXXXXX)"
if test \$? -ne 0 -o ! -d "\$outdir" ; then
echo "failed to create temporary directory"
exit 1
fi
trap 'rm -rf "\$outdir"' EXIT INT QUIT TERM HUP
argc=\$#
self="\$0"
set -- $(save "$@") "\$@"
exec 3<"\$self"
while read -r l ; do
test "\$l" = "exit 0;" && break
done <&3
while test \$# -gt \$argc ; do
file="\$1"
shift
meta="\${file%%:*}"
fn="\${file#*:}"
type="\${meta%%+*}"
meta="\${meta#*+}"
mode="\${meta%%+*}"
size="\${meta#*+}"
base="\${fn%/*}"
case "\$type" in
f)
echo "unpacking: \$fn (mode \$mode, \$size bytes)"
test "\$base" != "\$fn" && mkdir -p "\$outdir/\$base"
dd of="\$outdir/\$fn" bs="\$size" count=1 >/dev/null <&3
;;
d)
echo "creating: \$fn (mode \$mode)"
mkdir -p "\$outdir/\$fn"
;;
esac
chmod "\$mode" "\$outdir/\$fn" || :
done >/dev/null 2>&1
PATH="\$outdir:\$PATH" "\$outdir/$exe" "\$@"
exit \$?
exit 0;
HEADER
cat "$tmpout" >> "$out"
chmod +x "$out"
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