From 231394b1cd45cd3d03622079a3bc40ab6ee72839 Mon Sep 17 00:00:00 2001
From: Benjamin Bohard <bbohard@cadoles.com>
Date: Tue, 8 Sep 2020 09:21:18 +0200
Subject: [PATCH] Add client-side hook

---
 utils/hooks/pre-commit | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100755 utils/hooks/pre-commit

diff --git a/utils/hooks/pre-commit b/utils/hooks/pre-commit
new file mode 100755
index 0000000..05481da
--- /dev/null
+++ b/utils/hooks/pre-commit
@@ -0,0 +1,31 @@
+#!/bin/sh
+
+checkout_branch="$(git branch --show-current)"
+presentations_indexed_files="$(git diff --cached --name-only -- presentations/ | wc -l)"
+indexed_files="$(git diff --cached --name-only | wc -l)"
+
+case "$checkout_branch" in
+    master)
+        if [ "${presentations_indexed_files}" -gt 0 ]
+        then
+            cat <<\EOF
+Error: Attempt to add files in presentations folder in master branch.
+Files in presentations folder are to be added in special branches xelatex/*.
+EOF
+            exit 1
+        fi
+        ;;
+    xelatex/*)
+        if [ $presentations_indexed_files -ne $indexed_files ]
+        then
+            cat <<\EOF
+Error: Attempt to add files outside presentations folder in special branch xelatex/*.
+This branch follows only files in presentations folder.
+EOF
+            exit 1
+        fi
+        ;;
+    *) exit 0;;
+esac
+        
+exit 0