From a00aba83709b6757f4df2c2bd5db56d052be1608 Mon Sep 17 00:00:00 2001
From: Steffen Jaeckel <s@jaeckel.eu>
Date: Wed, 22 Mar 2017 11:21:49 +0100
Subject: [PATCH] add pre-commit hook

---
 hooks/pre-commit | 49 ++++++++++++++++++++++++++++++++++++++++++++++++
 makefile         |  3 +++
 2 files changed, 52 insertions(+)
 create mode 100755 hooks/pre-commit

diff --git a/hooks/pre-commit b/hooks/pre-commit
new file mode 100755
index 00000000..8a82f12d
--- /dev/null
+++ b/hooks/pre-commit
@@ -0,0 +1,49 @@
+#!/bin/sh
+#
+# An example hook script to verify what is about to be committed.
+# Called by "git commit" with no arguments.  The hook should
+# exit with non-zero status after issuing an appropriate message if
+# it wants to stop the commit.
+#
+# To enable this hook, rename this file to "pre-commit".
+
+if git rev-parse --verify HEAD >/dev/null 2>&1
+then
+	against=HEAD
+else
+	# Initial commit: diff against an empty tree object
+	against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+fi
+
+# If you want to allow non-ascii filenames set this variable to true.
+allownonascii=$(git config hooks.allownonascii)
+
+# Redirect output to stderr.
+exec 1>&2
+
+# Cross platform projects tend to avoid non-ascii filenames; prevent
+# them from being added to the repository. We exploit the fact that the
+# printable range starts at the space character and ends with tilde.
+if [ "$allownonascii" != "true" ] &&
+	# Note that the use of brackets around a tr range is ok here, (it's
+	# even required, for portability to Solaris 10's /usr/bin/tr), since
+	# the square bracket bytes happen to fall in the designated range.
+	test $(git diff --cached --name-only --diff-filter=A -z $against |
+	  LC_ALL=C tr -d '[ -~]\0' | wc -c) != 0
+then
+	echo "Error: Attempt to add a non-ascii file name."
+	echo
+	echo "This can cause problems if you want to work"
+	echo "with people on other platforms."
+	echo
+	echo "To be portable it is advisable to rename the file ..."
+	echo
+	echo "If you know what you are doing you can disable this"
+	echo "check using:"
+	echo
+	echo "  git config hooks.allownonascii true"
+	echo
+	exit 1
+fi
+
+exec perl helper.pl --check-all
diff --git a/makefile b/makefile
index c6263398..df60f899 100644
--- a/makefile
+++ b/makefile
@@ -278,6 +278,9 @@ install_test: testprof/$(LIBTEST)
 	install -d $(DESTDIR)$(INCPATH)
 	install -m 644 testprof/$(LIBTEST) $(DESTDIR)$(LIBPATH)
 
+install_hooks:
+	for s in `ls hooks/`; do ln -s ../../hooks/$$s .git/hooks/$$s; done
+
 profile:
 	CFLAGS="$(CFLAGS) -fprofile-generate" $(MAKE) timing EXTRALIBS="$(EXTRALIBS) -lgcov"
 	./timing