Have checkstyle check file header.

nresare · nresare · commit 3df50f93da62 · 2021-02-24T16:30:25.000Z
Also move checkstyle config to a separate directory and file.
diff --git a/checkstyle/checkstyle-config.xml b/checkstyle/checkstyle-config.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<!DOCTYPE module PUBLIC "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN" "https://checkstyle.org/dtds/configuration_1_3.dtd">
+<module name="Checker">
+  <module name="TreeWalker">
+    <module name="AvoidStarImport"/>
+    <module name="NeedBraces"/>
+  </module>
+  <module name="RegexpHeader">
+    <property name="headerFile" value="checkstyle/header.template.txt"/>
+    <property name="fileExtensions" value="java"/>
+  </module>
+</module>
diff --git a/checkstyle/header.template.txt b/checkstyle/header.template.txt
@@ -0,0 +1 @@
+// SPDX-License-Identifier: BSD-2-Clause
diff --git a/pom.xml b/pom.xml
@@ -248,17 +248,10 @@
                     Still too many failure (mostly in Javadoc) to enable it fully:
                     <configLocation>google_checks.xml</configLocation>
                     -->
+                    <configLocation>checkstyle/checkstyle-config.xml</configLocation>
                     <linkXRef>false</linkXRef>
                     <consoleOutput>true</consoleOutput>
                     <failsOnError>true</failsOnError>
-                    <checkstyleRules>
-                        <module name="Checker">
-                            <module name="TreeWalker">
-                                <module name="AvoidStarImport"/>
-                                <module name="NeedBraces"/>
-                            </module>
-                        </module>
-                    </checkstyleRules>
                 </configuration>
                 <dependencies>
                     <dependency>
diff --git a/src/main/java/lombok.config b/src/main/java/lombok.config

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+// SPDX-License-Identifier: BSD-2-Clause`