checkstyle.xml

<?xml version="1.0"?>

<!-- like 95% of the file is the parts I like from fabric's checkstyle -->
<!DOCTYPE module PUBLIC "-//Puppy Crawl//DTD Check Configuration 1.2//EN" "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">
<module name="Checker">
	<property name="localeLanguage" value="en"/>
	<property name="localeCountry" value="GB"/>

	<!-- Header -->
	<module name="Header">
		<property name="headerFile" value="config/java.header"/>
		<property name="fileExtensions" value="java"/>
	</module>

	<!-- Stolen from fabric. I approve. -->

	<!-- disallow blank after { -->
	<module name="RegexpMultiline">
		<property name="format" value="\{[\t ]*\r?\n[\t ]*\r?\n"/>
		<property name="message" value="blank line after '{'"/>
	</module>

	<!-- disallow blank before } -->
	<module name="RegexpMultiline">
		<property name="format" value="\n[\t ]*\r?\n[\t ]*\}"/>
		<property name="message" value="blank line before '}'"/>
	</module>

	<!-- Fabric uses this - I stole this style from fabric and it's manifested in my normal code style. -->
	<module name="RegexpMultiline">
		<property name="format" value="(?&lt;=\n)([\t]+)\}\r?\n\1(?:[^\r\n\}cd]|c[^\r\na]|ca[^\r\ns]|d[^\r\ne]|de[^\r\nf])"/>
		<property name="message" value="missing blank line after block at same indentation level"/>
	</module>

	<module name="TreeWalker">
		<module name="MissingOverride"/>
		<module name="StringLiteralEquality"/>
		<module name="UnusedImports"/>
		<module name="EqualsHashCode"/>

		<!-- spaces bad -->
		<module name="RegexpSinglelineJava">
			<property name="format" value="^\t* ([^*]|\*[^ /])"/>
			<property name="message" value="non-tab indentation"/>
		</module>
		<module name="OuterTypeFilename"/>

		<module name="PackageName">
			<property name="format" value="^com\.halotroop\.fabric\.(api(?!\.common\.)(\.client|\.server|)(\.(?!client\.|server\.)[a-z]+([a-rt-z]|ss))+\.v[1-9][0-9]*|(impl|mixin|test)(?!\.common\.)(\.client|\.server|)(\.(?!client\.|server\.)[a-z]+[a-rt-z])+|api\.(event|util|biomes\.v1|registry|client\.screen|container|block|entity|client\.itemgroup|client\.keybinding|tag|tools|client\.model|network|server|client\.render|resource|client\.texture))(|\.[a-z]+(\.[a-z0-9]+)*)$"/>
			<property name="message" value="package name doesn't fit the standard."/>
		</module>

		<!-- javadoc -->
		<module name="JavadocParagraph"/>
		<module name="JavadocStyle"/>
		<module name="AtclauseOrder">
			<property name="tagOrder" value="@param,@return,@throws,@apiNote,@implNote"/>
		</module>
	</module>
</module>