[MNG-6825] Replace StringUtils with Commons Lang3

Co-authored-by: Moderne <[email protected]>

Author: 2 people

src/main/java/org/apache/maven/plugins/checkstyle/AbstractCheckstyleReport.java

@@ -32,6 +32,7 @@
 import java.util.Map;
 import java.util.ResourceBundle;
 
+import org.apache.commons.lang3.StringUtils;
 import org.apache.maven.artifact.Artifact;
 import org.apache.maven.execution.MavenSession;
 import org.apache.maven.model.Dependency;
@@ -55,7 +56,6 @@
 import org.codehaus.plexus.resource.loader.FileResourceLoader;
 import org.codehaus.plexus.util.FileUtils;
 import org.codehaus.plexus.util.PathTool;
-import org.codehaus.plexus.util.StringUtils;
 
 import com.puppycrawl.tools.checkstyle.DefaultLogger;
 import com.puppycrawl.tools.checkstyle.XMLLogger;

src/main/java/org/apache/maven/plugins/checkstyle/CheckstyleReportGenerator.java

@@ -26,14 +26,14 @@
 import java.util.List;
 import java.util.ResourceBundle;
 
+import org.apache.commons.lang3.StringUtils;
 import org.apache.maven.doxia.sink.Sink;
 import org.apache.maven.doxia.sink.SinkEventAttributes;
 import org.apache.maven.doxia.sink.impl.SinkEventAttributeSet;
 import org.apache.maven.doxia.tools.SiteTool;
 import org.apache.maven.plugin.logging.Log;
 import org.apache.maven.plugin.logging.SystemStreamLog;
 import org.apache.maven.plugins.checkstyle.exec.CheckstyleResults;
-import org.codehaus.plexus.util.StringUtils;
 
 import com.puppycrawl.tools.checkstyle.api.AuditEvent;
 import com.puppycrawl.tools.checkstyle.api.CheckstyleException;

src/main/java/org/apache/maven/plugins/checkstyle/CheckstyleViolationCheckMojo.java

@@ -32,6 +32,7 @@
 import java.util.List;
 import java.util.Map;
 
+import org.apache.commons.lang3.StringUtils;
 import org.apache.maven.artifact.Artifact;
 import org.apache.maven.model.Dependency;
 import org.apache.maven.model.Plugin;
@@ -54,7 +55,6 @@
 import org.codehaus.plexus.util.FileUtils;
 import org.codehaus.plexus.util.PathTool;
 import org.codehaus.plexus.util.ReaderFactory;
-import org.codehaus.plexus.util.StringUtils;
 import org.codehaus.plexus.util.xml.pull.MXParser;
 import org.codehaus.plexus.util.xml.pull.XmlPullParser;
 import org.codehaus.plexus.util.xml.pull.XmlPullParserException;

src/main/java/org/apache/maven/plugins/checkstyle/RuleUtil.java

@@ -22,10 +22,10 @@
 import java.util.ArrayList;
 import java.util.List;
 
-import org.codehaus.plexus.util.StringUtils;
-
 import com.puppycrawl.tools.checkstyle.api.AuditEvent;
 
+import org.apache.commons.lang3.StringUtils;
+
 /**
  * Tooling for Checkstyle rules conventions: names, categories.
  *

src/main/java/org/apache/maven/plugins/checkstyle/exec/CheckstyleCheckerListener.java

@@ -26,7 +26,7 @@
 import com.puppycrawl.tools.checkstyle.api.Configuration;
 import com.puppycrawl.tools.checkstyle.api.SeverityLevel;
 
-import org.codehaus.plexus.util.StringUtils;
+import org.apache.commons.lang3.StringUtils;
 
 import java.io.File;
 import java.util.ArrayList;

src/main/java/org/apache/maven/plugins/checkstyle/exec/DefaultCheckstyleExecutor.java

@@ -34,6 +34,7 @@
 import java.util.Properties;
 import java.util.Set;
 
+import org.apache.commons.lang3.StringUtils;
 import org.apache.maven.artifact.Artifact;
 import org.apache.maven.artifact.DependencyResolutionRequiredException;
 import org.apache.maven.model.Resource;
@@ -46,7 +47,6 @@
 import org.codehaus.plexus.resource.loader.FileResourceLoader;
 import org.codehaus.plexus.resource.loader.ResourceNotFoundException;
 import org.codehaus.plexus.util.FileUtils;
-import org.codehaus.plexus.util.StringUtils;
 
 import com.puppycrawl.tools.checkstyle.Checker;
 import com.puppycrawl.tools.checkstyle.ConfigurationLoader;