Merge pull request #599 from dark64/git-hooks

Add git pre-commit hook

.githooks/pre-commit

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+log () {
+  printf "[\033[1;37mpre-commit\033[0m] $1\n"
+}
+
+rustfmt +nightly --version &>/dev/null
+if [ $? != 0 ]; then
+    log "\033[0;33mWARN\033[0m: rustfmt +nightly not found, skipping pre-commit hook"
+    exit 0
+fi
+
+files=()
+
+for file in $(git diff --name-only --cached); do
+    if [ ${file: -3} == ".rs" ]; then
+        rustfmt +nightly --check $file &>/dev/null
+        if [ $? != 0 ]; then
+            files+=($file)
+        fi
+    fi
+done
+
+if [ -n "$files" ]; then
+  log "the following files have improper formatting:\n"
+  for file in "${files[@]}"; do
+    printf "\033[0;33m\t$file\n"
+  done
+  printf "\n\033[0m"
+  log "aborting commit"
+  exit 1
+fi
+
+exit 0

README.md

@@ -37,3 +37,11 @@ ZoKrates is released under the GNU Lesser General Public License v3.
 We happily welcome contributions. You can either pick an existing issue or reach out on [Gitter](https://gitter.im/ZoKrates/Lobby).
 
 Unless you explicitly state otherwise, any contribution you intentionally submit for inclusion in the work shall be licensed as above, without any additional terms or conditions.
+
+### Git Hooks
+
+You can enable zokrates git hooks locally by running:
+
+```sh
+git config core.hooksPath .githooks
+```