Add input file encoding setting.

src/main/scala/org/scalastyle/sbt/Plugin.scala

@@ -59,6 +59,7 @@ object ScalastylePlugin extends AutoPlugin {
     val scalastyleConfigRefreshHours = settingKey[Integer]("How many hours until next run will fetch the scalastyle-config.xml again if location is a URI.")
     val scalastyleConfigUrlCacheFile = settingKey[String]("If scalastyleConfigUrl is set, it will be cached here")
     val scalastyleSources = settingKey[Seq[File]]("Which sources will scalastyle check")
+    val scalastyleInputEncoding = settingKey[Option[String]]("The encoding that scalastyle will load the input files using")
   }
 
   import autoImport._
@@ -77,8 +78,10 @@ object ScalastylePlugin extends AutoPlugin {
         val configRefreshHoursV = scalastyleConfigRefreshHours.value
         val targetV = target.value
         val configCacheFileV = scalastyleConfigUrlCacheFile.value
+        val inputEncodingV = scalastyleInputEncoding.value
 
-        Tasks.doScalastyle(args, configV, configUrlV, failOnErrorV, failOnWarningV, scalastyleSourcesV, scalastyleTargetV, streamsV, configRefreshHoursV, targetV, configCacheFileV)
+        Tasks.doScalastyle(args, configV, configUrlV, failOnErrorV, failOnWarningV, scalastyleSourcesV, scalastyleTargetV,
+                           streamsV, configRefreshHoursV, targetV, configCacheFileV, inputEncodingV)
       },
       scalastyleGenerateConfig := {
         val streamsValue = streams.value
@@ -108,15 +111,16 @@ object ScalastylePlugin extends AutoPlugin {
       scalastyleFailOnWarning := false,
       (scalastyleFailOnWarning in Test) := (scalastyleFailOnWarning in scalastyle).value,
       scalastyleSources := (unmanagedSourceDirectories in Compile).value,
-      (scalastyleSources in Test) := (unmanagedSourceDirectories in Test).value
+      (scalastyleSources in Test) := (unmanagedSourceDirectories in Test).value,
+      scalastyleInputEncoding := None
     ) ++
     Project.inConfig(Compile)(rawScalastyleSettings()) ++
     Project.inConfig(Test)(rawScalastyleSettings())
 }
 
 object Tasks {
   def doScalastyle(args: Seq[String], config: File, configUrl: Option[URL], failOnError: Boolean, failOnWarning: Boolean, scalastyleSources: Seq[File], scalastyleTarget: File,
-                      streams: TaskStreams[ScopedKey[_]], refreshHours: Integer, target: File, urlCacheFile: String): Unit = {
+                   streams: TaskStreams[ScopedKey[_]], refreshHours: Integer, target: File, urlCacheFile: String, inputEncoding: Option[String]): Unit = {
     val logger = streams.log
     val quietArg = "q"
     val silentArg = "s"
@@ -175,7 +179,7 @@ object Tasks {
         case files => files
       }
 
-      val messages = runScalastyle(config, filesToProcess)
+      val messages = runScalastyle(config, filesToProcess, inputEncoding)
 
       saveToXml(messageConfig, messages, scalastyleTarget.absolutePath)
 
@@ -199,9 +203,9 @@ object Tasks {
     extractFileFromJar(getClass.getResource("/scalastyle-config.xml"), config.absolutePath, streams.log)
   }
 
-  private[this] def runScalastyle(config: File, filesToProcess: Seq[File]) = {
+  private[this] def runScalastyle(config: File, filesToProcess: Seq[File], inputEncoding: Option[String]) = {
     val configuration = ScalastyleConfiguration.readFromXml(config.absolutePath)
-    new ScalastyleChecker().checkFiles(configuration, Directory.getFiles(None, filesToProcess, Nil))
+    new ScalastyleChecker().checkFiles(configuration, Directory.getFiles(inputEncoding, filesToProcess, Nil))
   }
 
   private[this] def printResults(config: Config, logger: Logger, messages: List[Message[FileSpec]], quiet: Boolean = false,

src/sbt-test/config/scalastyle-input-encoding/build.sbt

@@ -0,0 +1,6 @@
+scalastyleTarget := file("target/scalastyle-output.xml")
+
+version := "0.1"
+
+scalaVersion := "2.10.0"
+

src/sbt-test/config/scalastyle-input-encoding/project/plugins.sbt

@@ -0,0 +1,9 @@
+resolvers += "sonatype-snapshots" at "https://oss.sonatype.org/content/repositories/snapshots/"
+
+{
+  val pluginVersion = System.getProperty("plugin.version")
+  if(pluginVersion == null)
+    throw new RuntimeException("""|The system property 'plugin.version' is not defined.
+                                  |Specify this property using the scriptedLaunchOpts -D.""".stripMargin)
+  else addSbtPlugin("org.scalastyle" % "scalastyle-sbt-plugin" % pluginVersion)
+}

src/sbt-test/config/scalastyle-input-encoding/scalastyle-config.xml

@@ -0,0 +1,13 @@
+<scalastyle>
+ <name>Scalastyle standard configuration</name>
+ <check level="warning" class="org.scalastyle.file.FileLengthChecker" enabled="true">
+  <parameters>
+   <parameter name="maxFileLength"><![CDATA[5]]></parameter>
+  </parameters>
+ </check>
+ <check level="warning" class="org.scalastyle.scalariform.ObjectNamesChecker" enabled="true">
+  <parameters>
+   <parameter name="regex"><![CDATA[[A-Z][A-Za-z]*]]></parameter>
+  </parameters>
+ </check>
+</scalastyle>

src/sbt-test/config/scalastyle-input-encoding/src/main/scala/hello.scala

@@ -0,0 +1,10 @@
+
+object Main extends App {
+  println("hello")
+  println("网址")
+}
+
+object foo {
+  println("hello")
+}
+

src/sbt-test/config/scalastyle-input-encoding/test

@@ -0,0 +1,5 @@
+# scalastyle with UTF-8 input file
+-> scalastyle
+> 'set scalastyleInputEncoding := Some(scala.io.Codec.UTF8.name)'
+> scalastyle
+$ exists target/scalastyle-output.xml