1 files changed, 70 insertions, 4 deletions

diff --git a/src/cz/crcs/ectester/common/util/FileUtil.java b/src/cz/crcs/ectester/common/util/FileUtil.java
index 790596b..e6e319b 100644
--- a/src/cz/crcs/ectester/common/util/FileUtil.java
+++ b/src/cz/crcs/ectester/common/util/FileUtil.java
@@ -2,10 +2,13 @@ package cz.crcs.ectester.common.util;
 
 import cz.crcs.ectester.common.output.TeeOutputStream;
 
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.OutputStream;
-import java.io.OutputStreamWriter;
+import java.io.*;
+import java.net.URL;
+import java.net.URLConnection;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -13,6 +16,9 @@ import java.util.List;
  * @author Jan Jancar johny@neuromancer.sk
  */
 public class FileUtil {
+    private static Path appData = null;
+    public static String LIB_RESOURCE_DIR = "/cz/crcs/ectester/standalone/libs/jni/";
+
     public static OutputStream openStream(String[] files) throws FileNotFoundException {
         if (files == null) {
             return null;
@@ -30,4 +36,64 @@ public class FileUtil {
         }
         return new OutputStreamWriter(openStream(files));
     }
+
+    public static Path getAppData() {
+        if (appData != null) {
+            return appData;
+        }
+
+        if (System.getProperty("os.name").startsWith("Windows")) {
+            appData = Paths.get(System.getenv("AppData"));
+        } else {
+            if (System.getProperty("os.name").startsWith("Linux")) {
+                String dataHome = System.getenv("XDG_DATA_HOME");
+                if (dataHome != null) {
+                    appData = Paths.get(dataHome);
+                } else {
+                    appData = Paths.get(System.getProperty("user.home"), ".local", "share");
+                }
+            } else {
+                appData = Paths.get(System.getProperty("user.home"), ".local", "share");
+            }
+        }
+        return appData;
+    }
+
+    public static boolean isNewer(URLConnection jarConn, Path realPath) throws IOException {
+        if (realPath.toFile().isFile()) {
+            long jarModified = jarConn.getLastModified();
+            long realModified = Files.getLastModifiedTime(realPath).toMillis();
+            return jarModified > realModified;
+        }
+        return true;
+    }
+
+    public static boolean writeNewer(String resourcePath, Path outPath) throws IOException {
+        URL reqURL = FileUtil.class.getResource(resourcePath);
+        if (reqURL == null) {
+            return false;
+        }
+        URLConnection reqConn = reqURL.openConnection();
+        if (isNewer(reqConn, outPath)) {
+            Files.copy(reqConn.getInputStream(), outPath, StandardCopyOption.REPLACE_EXISTING);
+        }
+        reqConn.getInputStream().close();
+        return true;
+    }
+
+    public static Path getLibDir() {
+        return getAppData().resolve("ECTesterStandalone");
+    }
+
+    public static Path getRequirementsDir() {
+        return getLibDir().resolve("lib");
+    }
+
+    public static String getLibSuffix() {
+        if (System.getProperty("os.name").startsWith("Windows")) {
+            return "dll";
+        } else {
+            return "so";
+        }
+    }
 }