crossplatform sfx

scripts/sfx.sh

@@ -0,0 +1,72 @@
+# use current/default shell
+set -e
+
+dir="$(
+	printf '%s\n' "$TMPDIR" /tmp |
+	awk '/./ {print; exit}'
+)/pe-copyparty"
+
+[ -e "$dir/vPACK_TS" ] || (
+	printf '\033[36munpacking copyparty vCPP_VER (sfx-PACK_HTS)\033[1;30m\n\n'
+	mkdir -p "$dir.$$"
+	ofs=$(awk '$0=="sfx_eof" {print NR+1; exit}' < "$0")
+	
+	[ -z "$ofs" ] && {
+		printf '\033[31mabort: could not find SFX boundary\033[0m\n'
+		exit 1
+	}
+	tail -n +$ofs "$0" | tar -JxC "$dir.$$"
+	ln -nsf "$dir.$$" "$dir"
+	printf '\033[0m'
+	
+	now=$(date -u +%s)
+	for d in "$dir".*; do
+		ts=$(stat -c%Y -- "$d" 2>/dev/null) ||
+		ts=$(stat -f %m%n -- "$d" 2>/dev/null)
+
+		[ $((now-ts)) -gt 300 ] &&
+			rm -rf "$d"
+	done
+	echo h > "$dir/vPACK_TS"
+) >&2 || exit 1
+
+# detect available pythons
+(IFS=:; for d in $PATH; do
+	printf '%s\n' "$d"/python* "$d"/pypy* | tac;
+done) | grep -E '(python|pypy)[0-9\.-]*$' > $dir/pys || true
+
+# see if we made a choice before
+[ -z "$pybin" ] && pybin="$(cat $dir/py 2>/dev/null || true)"
+
+# otherwise find a python with jinja2
+[ -z "$pybin" ] && pybin="$(cat $dir/pys | while IFS= read -r _py; do
+	printf '\033[1;30mlooking for jinja2 in [%s]\033[0m\n' "$_py" >&2
+	$_py -c 'import jinja2' 2>/dev/null || continue
+	printf '%s\n' "$_py"
+	mv $dir/{,x.}jinja2
+	break
+done)"
+
+# otherwise find python2 (bundled jinja2 is way old)
+[ -z "$pybin" ] && {
+	printf '\033[0;33mcould not find jinja2; will use py2 + the bundled version\033[0m\n' >&2
+	pybin="$(cat $dir/pys | while IFS= read -r _py; do
+		printf '\033[1;30mtesting if py2 [%s]\033[0m\n' "$_py" >&2
+		_ver=$($_py -c 'import sys; sys.stdout.write(str(sys.version_info[0]))' 2>/dev/null) || continue
+		[ $_ver = 2 ] || continue
+		printf '%s\n' "$_py"
+		break
+	done)"
+}
+
+[ -z "$pybin" ] && {
+	printf '\033[1;31m\ncould not find a python with jinja2 installed; please do one of these:\n\n  pip install --user jinja2\n\n  install python2\033[0m\n\n' >&2
+	exit 1
+}
+
+printf '\033[1;30musing [%s]. you can reset with this:\n  rm -rf %s*\033[0m\n\n' "$pybin" "$dir"
+printf '%s\n' "$pybin" > $dir/py
+
+PYTHONPATH=$dir exec "$pybin" -m copyparty "$@"
+
+sfx_eof