From 3a6788c0d0b50e0cae902cfdc737d1b2624202ba Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Wed, 11 Jan 2017 10:50:02 +0100
Subject: single: allow to build self-extracting executable

This allows to create a self extracting executable. The standalone
binary and lua files are extracted to /tmp/.vis-XXXXXX, vis is started
with the given command line arguments, finally temporary files are
removed.

Signed-off-by: Christian Hesse <mail@eworm.de>
---
 .gitignore    |  1 +
 GNUmakefile   |  5 +++++
 vis-single.sh | 14 ++++++++++++++
 3 files changed, 20 insertions(+)
 create mode 100755 vis-single.sh

diff --git a/.gitignore b/.gitignore
index 103b097..63eab3f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 /dependency
 /vis
 /vis-menu
+/vis-single
 *.css
 *.gcda
 *.gcno
diff --git a/GNUmakefile b/GNUmakefile
index dba2952..052c300 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -185,4 +185,9 @@ standalone: clean
 		CFLAGS="-I$(DEPS_INC) --static -Wl,--as-needed" LDFLAGS="-L$(DEPS_LIB)" CC=musl-gcc
 	PATH=$(DEPS_BIN):$$PATH $(MAKE)
 
+single: standalone
+	cp vis-single.sh vis-single
+	strip vis
+	tar c vis lua/ | gzip -9 >> vis-single
+
 .PHONY: standalone local dependencies-common dependencies-local dependencies-clean
diff --git a/vis-single.sh b/vis-single.sh
new file mode 100755
index 0000000..b6ff69e
--- /dev/null
+++ b/vis-single.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -e
+
+VISTMP="$(mktemp -d -p "${TMPDIR:-/tmp}" .vis-XXXXXX)"
+trap 'rm -rf "$VISTMP"' EXIT INT QUIT TERM HUP
+
+sed '1,/^__TAR_GZ_ARCHIVE_BELOW__$/d' "$0" | gzip -d | tar xC "$VISTMP"
+
+"$VISTMP/vis" "$@"
+
+exit $?
+
+__TAR_GZ_ARCHIVE_BELOW__
-- 
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