Integrate LZ4 library, compress the ramdisk

lz4/tests/unicode_lint.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+# `unicode_lint.sh' determines whether source files under the ./lib/, ./tests/ and ./programs/ directories
+# contain Unicode characters, and fails if any do.
+#
+# See https://github.com/lz4/lz4/issues/1018
+
+echo "Ensure no unicode character is present in source files *.{c,h}"
+pass=true
+
+# Scan ./lib/ for Unicode in source (*.c, *.h) files
+echo "Scanning lib/"
+result=$(
+	find ./lib/ -regex '.*\.\(c\|h\)$' -exec grep -P -n "[^\x00-\x7F]" {} \; -exec echo "{}: FAIL" \;
+)
+if [[ $result ]]; then
+	echo "$result"
+	pass=false
+fi
+
+# Scan ./programs/ for Unicode in source (*.c, *.h) files
+echo "Scanning programs/"
+result=$(
+	find ./programs/ -regex '.*\.\(c\|h\)$' -exec grep -P -n "[^\x00-\x7F]" {} \; -exec echo "{}: FAIL" \;
+)
+if [[ $result ]]; then
+	echo "$result"
+	pass=false
+fi
+
+# Scan ./tests/ for Unicode in source (*.c, *.h) files
+echo "Scanning tests/"
+result=$(
+	find ./tests/ -regex '.*\.\(c\|h\)$' -exec grep -P -n "[^\x00-\x7F]" {} \; -exec echo "{}: FAIL" \;
+)
+if [[ $result ]]; then
+	echo "$result"
+	pass=false
+fi
+
+if [ "$pass" = true ]; then
+	echo "All tests successful: no unicode character detected"
+	echo "Result: PASS"
+	exit 0
+else
+	echo "Result: FAIL"
+	exit 1
+fi