diff --git a/app/src/main/java/luyao/util/ktx/ui/CommonListActivity.kt b/app/src/main/java/luyao/util/ktx/ui/CommonListActivity.kt
index 1b306c1..66bbd46 100644
--- a/app/src/main/java/luyao/util/ktx/ui/CommonListActivity.kt
+++ b/app/src/main/java/luyao/util/ktx/ui/CommonListActivity.kt
@@ -7,7 +7,7 @@ import luyao.ktx.R
 import luyao.util.ktx.adapter.CommonAdapter
 import luyao.util.ktx.base.BaseActivity
 import luyao.util.ktx.bean.ItemBean
-import luyao.util.ktx.ext.itemPadding
+import luyao.util.ktx.ext.view.itemPadding
 
 /**
  * Created by luyao
diff --git a/ktx/build.gradle b/ktx/build.gradle
index 4509335..0abd81d 100644
--- a/ktx/build.gradle
+++ b/ktx/build.gradle
@@ -103,7 +103,7 @@ publish {
     userOrg = 'luyaox'           //bintray.com 注册的用户名
     groupId = 'luyao.util.ktx'   //以后访问 jcenter上此项目的路径，一般和库项目的包名一致
     artifactId = 'AndroidUtilKTX'       //bintray.com 创建的 Package 名
-    publishVersion = '0.0.5-alpha02'         //版本号
+    publishVersion = '0.0.5-alpha03'         //版本号
     desc = 'Android Kotlin Util Code' //版本说明，随意
     website = 'https://github.com/lulululbj/AndroidUtilCodeKTX'    //关于这个开源项目的网站，随意
 }
\ No newline at end of file
diff --git a/ktx/gradle/wrapper/gradle-wrapper.jar b/ktx/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..f6b961f
Binary files /dev/null and b/ktx/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/ktx/gradle/wrapper/gradle-wrapper.properties b/ktx/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..6e9965a
--- /dev/null
+++ b/ktx/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Fri Jul 26 08:57:26 CST 2019
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip
diff --git a/ktx/gradlew b/ktx/gradlew
new file mode 100644
index 0000000..cccdd3d
--- /dev/null
+++ b/ktx/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/ktx/gradlew.bat b/ktx/gradlew.bat
new file mode 100644
index 0000000..f955316
--- /dev/null
+++ b/ktx/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/ktx/resources/enc b/ktx/resources/enc
index ee700fd..98ef193 100644
Binary files a/ktx/resources/enc and b/ktx/resources/enc differ
diff --git a/ktx/src/main/java/luyao/util/ktx/ext/CommonExt.kt b/ktx/src/main/java/luyao/util/ktx/ext/CommonExt.kt
index 70b4342..7194efa 100644
--- a/ktx/src/main/java/luyao/util/ktx/ext/CommonExt.kt
+++ b/ktx/src/main/java/luyao/util/ktx/ext/CommonExt.kt
@@ -1,9 +1,10 @@
 package luyao.util.ktx.ext
 
-import android.accessibilityservice.AccessibilityServiceInfo
 import android.content.ClipData
 import android.content.Context
 import android.os.Build
+import android.provider.Settings
+import android.text.TextUtils
 import android.view.View
 
 /**
@@ -58,14 +59,19 @@ fun Context.copyToClipboard(label: String, text: String) {
     clipboardManager?.primaryClip = clipData
 }
 
-fun Context.checkAccessbilityServiceEnabled(serviceName: String): Boolean =
-    accessibilityManager.notNull({
+fun Context.checkAccessbilityServiceEnabled(serviceName: String): Boolean {
+    val settingValue =
+        Settings.Secure.getString(applicationContext.contentResolver, Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES)
+    return settingValue.notNull({
         var result = false
-        for (serviceInfo in accessibilityManager!!.getEnabledAccessibilityServiceList(AccessibilityServiceInfo.FEEDBACK_GENERIC)) {
-            if (serviceInfo.id == serviceName) {
+        val splitter = TextUtils.SimpleStringSplitter(':')
+        while (splitter.hasNext()) {
+            if (splitter.next().equals(serviceName, true)) {
                 result = true
+                break
             }
         }
         result
     }, { false })
+}
 
diff --git a/ktx/src/main/java/luyao/util/ktx/ext/FileExt.kt b/ktx/src/main/java/luyao/util/ktx/ext/FileExt.kt
index 43e835e..f6777bf 100644
--- a/ktx/src/main/java/luyao/util/ktx/ext/FileExt.kt
+++ b/ktx/src/main/java/luyao/util/ktx/ext/FileExt.kt
@@ -1,50 +1,82 @@
 package luyao.util.ktx.ext
 
+import luyao.util.ktx.func.*
+import luyao.util.ktx.util.MimeType
+import java.io.File
+import java.nio.charset.Charset
+
 /**
  * Created by luyao
  * on 2019/7/18 9:25
  */
 
-// long 格式化 GB MB KB
+val File.canListFiles: Boolean
+    get() = canRead() and isDirectory
+
+val File.totalSize: Long
+    get() = if (isFile) length() else getFolderSize(this)
+
+val File.formatSize: String
+    get() = getFormatFileSize(totalSize)
+
+val File.mimeType: String
+    get() = MimeType.getMimeType(extension, isDirectory)
+
+fun File.listFiles(isRecursive: Boolean = false, filter: ((file: File) -> Boolean)? = null): Array<out File> {
+    val fileList = if (!isRecursive) listFiles() else getAllSubFile(this)
+    var result: Array<File> = arrayOf()
+    return if (filter == null) fileList
+    else {
+        for (file in fileList) {
+            if (filter(file)) result = result.plus(file)
+        }
+        result
+    }
+}
+
+fun File.writeText(append: Boolean = false, text: String, charset: Charset = Charsets.UTF_8) {
+    if (append) appendText(text, charset) else writeText(text, charset)
+}
+
+fun File.writeBytes(append: Boolean = false, bytes: ByteArray) {
+    if (append) appendBytes(bytes) else writeBytes(bytes)
+}
+
+/**
+ *   [destFile] dest file/folder
+ *   [overwrite] whether to override dest file/folder if exist
+ *   [reserve] Whether to reserve source file/folder
+ */
+fun File.moveTo(destFile: File, overwrite: Boolean = true, reserve: Boolean = true): Boolean {
+    val dest = copyRecursively(destFile, overwrite)
+    if (!reserve) deleteRecursively()
+    return dest
+}
+
+/**
+ *   [destFolder] dest folder
+ *   [overwrite] whether to override dest file/folder if exist
+ *   [func] progress callback (from 0 to 100)
+ */
+fun File.moveToWithProgress(
+    destFolder: File,
+    overwrite: Boolean = true,
+    reserve: Boolean = true,
+    func: ((file: File, i: Int) -> Unit)? = null
+) {
+
+    if (isDirectory) copyFolder(this, File(destFolder, name), overwrite, func)
+    else copyFile(this, File(destFolder, name), overwrite, func)
+
+    if (!reserve) deleteRecursively()
+}
+
+fun File.rename(newName: String) =
+    rename(File("$parent${File.separator}$newName"))
+
+fun File.rename(newFile: File) =
+    if (newFile.exists()) false else renameTo(newFile)
 
 // 获取内部存储容量，可用，已用空间
-
-// 获取 File 大小
-
-// chmod Os.chmod()  是否可用？
-
-// createSymlink ？
-
-// isSymlink
-
-// create
-
-// delete deleteFile deleteFolder  delete(filter)
-
-// writeToFile(InputStream)
-
-// writeToFile(ByteArray)
-
-// copyFile(File,File) copyFile(String,String)  /move
-
-// copyFolder(File,File) copyFolder(String,String) /move
-
-// close
-
-// rename(String) rename(File)
-
-// isFile  isFolder
-
-// create(是否保留源文件)
-
-// listFile(filter) 是否遍历子文件夹
-
 // getCharset
-
-// 获取后缀名 获取文件名不含后缀
-
-// mimeType
-
-// parentPath
-
 // 文件名冲突
diff --git a/ktx/src/main/java/luyao/util/ktx/ext/IntentExt.kt b/ktx/src/main/java/luyao/util/ktx/ext/IntentExt.kt
index aaca729..917ca66 100644
--- a/ktx/src/main/java/luyao/util/ktx/ext/IntentExt.kt
+++ b/ktx/src/main/java/luyao/util/ktx/ext/IntentExt.kt
@@ -113,4 +113,12 @@ fun Context.uninstallApp(packageName: String) {
     }
 }
 
+fun Context.sendEmail(email: String, subject: String?, text: String?) {
+    Intent(Intent.ACTION_SENDTO, Uri.parse("mailto:$email")).run {
+        subject?.let { putExtra(Intent.EXTRA_SUBJECT, subject) }
+        text?.let { putExtra(Intent.EXTRA_TEXT, text) }
+        startActivity(this)
+    }
+}
+
 
diff --git a/ktx/src/main/java/luyao/util/ktx/ext/RecycleViewExt.kt b/ktx/src/main/java/luyao/util/ktx/ext/view/RecycleViewExt.kt
similarity index 82%
rename from ktx/src/main/java/luyao/util/ktx/ext/RecycleViewExt.kt
rename to ktx/src/main/java/luyao/util/ktx/ext/view/RecycleViewExt.kt
index 5df0d9b..e58ba44 100644
--- a/ktx/src/main/java/luyao/util/ktx/ext/RecycleViewExt.kt
+++ b/ktx/src/main/java/luyao/util/ktx/ext/view/RecycleViewExt.kt
@@ -1,13 +1,19 @@
-package luyao.util.ktx.ext
+package luyao.util.ktx.ext.view
 
 import android.graphics.Rect
 import android.view.View
 import androidx.recyclerview.widget.RecyclerView
+import luyao.util.ktx.ext.dp2px
 
 /**
  * Created by luyao
  * on 2019/6/14 14:07
  */
+
+fun RecyclerView.itemPadding(padding:Int) {
+    addItemDecoration(PaddingItemDecoration(padding, padding, padding, padding))
+}
+
 fun RecyclerView.itemPadding(top: Int, bottom: Int, left: Int = 0, right: Int = 0) {
     addItemDecoration(PaddingItemDecoration(top, bottom, left, right))
 }
diff --git a/ktx/src/main/java/luyao/util/ktx/func/FileUtils.kt b/ktx/src/main/java/luyao/util/ktx/func/FileUtils.kt
new file mode 100644
index 0000000..e9b6c38
--- /dev/null
+++ b/ktx/src/main/java/luyao/util/ktx/func/FileUtils.kt
@@ -0,0 +1,105 @@
+package luyao.util.ktx.func
+
+import luyao.util.ktx.ext.canListFiles
+import java.io.*
+import java.nio.ByteBuffer
+import java.text.DecimalFormat
+
+/**
+ * Created by luyao
+ * on 2019/7/23 9:29
+ */
+
+fun getFolderSize(file: File): Long {
+    var total = 0L
+    for (subFile in file.listFiles()) {
+        total += if (subFile.isFile) subFile.length()
+        else getFolderSize(subFile)
+    }
+    return total
+}
+
+fun getFormatFileSize(size: Long, unit: Int = 1000): String {
+    val formatter = DecimalFormat("####.00")
+    return when {
+        size < 0 -> "0 B"
+        size < unit -> "$size B"
+        size < unit * unit -> "${formatter.format(size / unit)} KB"
+        size < unit * unit * unit -> "${formatter.format(size / unit / unit)} MB"
+        else -> "${formatter.format(size / unit / unit / unit)} GB"
+    }
+}
+
+
+fun getAllSubFile(folder: File): Array<File> {
+    var fileList: Array<File> = arrayOf()
+    if (!folder.canListFiles) return fileList
+    for (subFile in folder.listFiles())
+        fileList = if (subFile.isFile) fileList.plus(subFile)
+        else fileList.plus(getAllSubFile(subFile))
+    return fileList
+}
+
+fun copyFile(sourceFile: File, destFile: File, overwrite: Boolean, func: ((file: File, i: Int) -> Unit)? = null) {
+
+    if (!sourceFile.exists()) return
+
+    if (destFile.exists()) {
+        val stillExists = if (!overwrite) true else !destFile.delete()
+
+        if (stillExists) {
+            return
+        }
+    }
+
+    if (!destFile.exists()) destFile.createNewFile()
+
+    val inputStream = FileInputStream(sourceFile)
+    val outputStream = FileOutputStream(destFile)
+    val iChannel = inputStream.channel
+    val oChannel = outputStream.channel
+
+
+    val totalSize = sourceFile.length()
+    val buffer = ByteBuffer.allocate(1024)
+    var hasRead = 0f
+    var progress = -1
+    while (true) {
+        buffer.clear()
+        val read = iChannel.read(buffer)
+        if (read == -1)
+            break
+        buffer.limit(buffer.position())
+        buffer.position(0)
+        oChannel.write(buffer)
+        hasRead += read
+
+        func?.let {
+            val newProgress = ((hasRead / totalSize) * 100).toInt()
+            if (progress != newProgress) {
+                progress = newProgress
+                it(sourceFile, progress)
+            }
+        }
+    }
+
+    inputStream.close()
+    outputStream.close()
+}
+
+fun copyFolder(sourceFolder: File, destFolder: File, overwrite: Boolean, func: ((file: File, i: Int) -> Unit)? = null) {
+    if (!sourceFolder.exists()) return
+
+    if (!destFolder.exists()) {
+        val result = destFolder.mkdirs()
+        if (!result) return
+    }
+
+    for (subFile in sourceFolder.listFiles()) {
+        if (subFile.isDirectory) {
+            copyFolder(subFile, File("${destFolder.path}${File.separator}${subFile.name}"), overwrite, func)
+        } else {
+            copyFile(subFile, File(destFolder, subFile.name), overwrite, func)
+        }
+    }
+}
diff --git a/ktx/src/main/java/luyao/util/ktx/util/MimeType.kt b/ktx/src/main/java/luyao/util/ktx/util/MimeType.kt
new file mode 100644
index 0000000..99d6d05
--- /dev/null
+++ b/ktx/src/main/java/luyao/util/ktx/util/MimeType.kt
@@ -0,0 +1,135 @@
+package luyao.util.ktx.util
+
+import android.webkit.MimeTypeMap
+import java.util.*
+import java.util.regex.Pattern
+
+class MimeType {
+
+    companion object {
+        private const val ALL_MIME_TYPES = "*/*"
+        private val MIME_TYPES = HashMap<String, String>(1 + (66 / 0.75).toInt())
+
+        fun getMimeType(extension: String, isDirectory: Boolean): String {
+            if (isDirectory) {
+                return ""
+            }
+
+            var type: String? = ALL_MIME_TYPES
+
+            // mapping extension to system mime types
+            if (extension.isNotEmpty()) {
+                val extensionLowerCase = extension.toLowerCase(Locale
+                        .getDefault())
+                val mime = MimeTypeMap.getSingleton()
+                type = mime.getMimeTypeFromExtension(extensionLowerCase)
+                if (type == null) {
+                    type = MIME_TYPES[extensionLowerCase]
+                }
+            }
+            if (type == null) type = ALL_MIME_TYPES
+            return type
+        }
+
+        fun mimeTypeMatch(mime: String, input: String): Boolean {
+            return Pattern.matches(mime.replace("*", ".*"), input)
+        }
+
+
+        /**
+         * Helper method for [.getMimeType]
+         * to calculate the last '.' extension of files
+         * @param path the path of file
+         * @return extension extracted from name in lowercase
+         */
+        fun getExtension(path: String): String {
+            return if (path.contains("."))
+                path.substring(path.lastIndexOf(".") + 1).toLowerCase()
+            else
+                ""
+        }
+    }
+    init {
+        /*
+         * ================= MIME TYPES ====================
+		 */
+        MIME_TYPES["asm"] = "text/x-asm"
+        MIME_TYPES["json"] = "application/json"
+        MIME_TYPES["js"] = "application/javascript"
+
+        MIME_TYPES["def"] = "text/plain"
+        MIME_TYPES["in"] = "text/plain"
+        MIME_TYPES["rc"] = "text/plain"
+        MIME_TYPES["list"] = "text/plain"
+        MIME_TYPES["log"] = "text/plain"
+        MIME_TYPES["pl"] = "text/plain"
+        MIME_TYPES["prop"] = "text/plain"
+        MIME_TYPES["properties"] = "text/plain"
+        MIME_TYPES["rc"] = "text/plain"
+        MIME_TYPES["ini"] = "text/plain"
+        MIME_TYPES["md"] = "text/markdown"
+
+        MIME_TYPES["epub"] = "application/epub+zip"
+        MIME_TYPES["ibooks"] = "application/x-ibooks+zip"
+
+        MIME_TYPES["ifb"] = "text/calendar"
+        MIME_TYPES["eml"] = "message/rfc822"
+        MIME_TYPES["msg"] = "application/vnd.ms-outlook"
+
+        MIME_TYPES["ace"] = "application/x-ace-compressed"
+        MIME_TYPES["bz"] = "application/x-bzip"
+        MIME_TYPES["bz2"] = "application/x-bzip2"
+        MIME_TYPES["cab"] = "application/vnd.ms-cab-compressed"
+        MIME_TYPES["gz"] = "application/x-gzip"
+        MIME_TYPES["lrf"] = "application/octet-stream"
+        MIME_TYPES["jar"] = "application/java-archive"
+        MIME_TYPES["xz"] = "application/x-xz"
+        MIME_TYPES["Z"] = "application/x-compress"
+
+        MIME_TYPES["bat"] = "application/x-msdownload"
+        MIME_TYPES["ksh"] = "text/plain"
+        MIME_TYPES["sh"] = "application/x-sh"
+
+        MIME_TYPES["db"] = "application/octet-stream"
+        MIME_TYPES["db3"] = "application/octet-stream"
+
+        MIME_TYPES["otf"] = "application/x-font-otf"
+        MIME_TYPES["ttf"] = "application/x-font-ttf"
+        MIME_TYPES["psf"] = "application/x-font-linux-psf"
+
+        MIME_TYPES["cgm"] = "image/cgm"
+        MIME_TYPES["btif"] = "image/prs.btif"
+        MIME_TYPES["dwg"] = "image/vnd.dwg"
+        MIME_TYPES["dxf"] = "image/vnd.dxf"
+        MIME_TYPES["fbs"] = "image/vnd.fastbidsheet"
+        MIME_TYPES["fpx"] = "image/vnd.fpx"
+        MIME_TYPES["fst"] = "image/vnd.fst"
+        MIME_TYPES["mdi"] = "image/vnd.ms-mdi"
+        MIME_TYPES["npx"] = "image/vnd.net-fpx"
+        MIME_TYPES["xif"] = "image/vnd.xiff"
+        MIME_TYPES["pct"] = "image/x-pict"
+        MIME_TYPES["pic"] = "image/x-pict"
+
+        MIME_TYPES["adp"] = "audio/adpcm"
+        MIME_TYPES["au"] = "audio/basic"
+        MIME_TYPES["snd"] = "audio/basic"
+        MIME_TYPES["m2a"] = "audio/mpeg"
+        MIME_TYPES["m3a"] = "audio/mpeg"
+        MIME_TYPES["oga"] = "audio/ogg"
+        MIME_TYPES["spx"] = "audio/ogg"
+        MIME_TYPES["aac"] = "audio/x-aac"
+        MIME_TYPES["mka"] = "audio/x-matroska"
+
+        MIME_TYPES["jpgv"] = "video/jpeg"
+        MIME_TYPES["jpgm"] = "video/jpm"
+        MIME_TYPES["jpm"] = "video/jpm"
+        MIME_TYPES["mj2"] = "video/mj2"
+        MIME_TYPES["mjp2"] = "video/mj2"
+        MIME_TYPES["mpa"] = "video/mpeg"
+        MIME_TYPES["ogv"] = "video/ogg"
+        MIME_TYPES["flv"] = "video/x-flv"
+        MIME_TYPES["mkv"] = "video/x-matroska"
+    }
+
+
+}
\ No newline at end of file