pre-commit

#!/bin/bash -e
#
# based on : https://hdpe.me/post/maven-checkstyle-pre-commit-hook/
#
# DESCRIPTION
# Considering only the staged .java files, it walks the filesystem tree
# to look for any modules (it considers a module if it has a pom.xml file).
# For each module found it runs Checkstyle on it.
 
function get_module() {
 local path=$1;
 while true; do
 path=$(dirname $path);
 if [ -f "$path/pom.xml" ]; then
 echo "$path";
 return;
 elif [[ "./" =~ "$path" ]]; then
 return;
 fi
 done
}
 
modules=();
 
for file in $(git diff --name-only --cached \*.java); do
 module=$(get_module "$file");
 if [ "" != "$module" ] \
 && [[ ! " ${modules[@]} " =~ " $module " ]]; then
 modules+=("$module");
 fi
done;
 
if [ ${#modules[@]} -eq 0 ]; then
 exit;
fi
 
for dir in ${modules[@]}; do
 cd ${dir};
 mvn checkstyle:check -Dcheckstyle.config.location=google_checks.xml -Dcheckstyle.consoleOutput=true;
 cd ..;
done;