Github user martin-g commented on a diff in the pull request:
https://github.com/apache/wicket/pull/142#discussion_r44009485
--- Diff:
wicket-util/src/main/java/org/apache/wicket/util/resource/PathResourceStream.java
---
@@ -0,0 +1,163 @@
+package org.apache.wicket.util.resource;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URLConnection;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.attribute.BasicFileAttributes;
+
+import org.apache.wicket.util.file.File;
+import org.apache.wicket.util.lang.Args;
+import org.apache.wicket.util.lang.Bytes;
+import org.apache.wicket.util.time.Time;
+
+/**
+ * A PathResourceStream is an IResource implementation for paths.
+ *
+ * @see org.apache.wicket.util.resource.IResourceStream
+ * @see org.apache.wicket.util.watch.IModifiable
+ * @author Tobias Soloschenko
+ */
+public class PathResourceStream extends AbstractResourceStream
+ implements
+ IFixedLocationResourceStream
+{
+ private static final long serialVersionUID = 1L;
+
+ /** Any associated path */
+ private Path path;
+
+ /** Resource stream */
+ private transient InputStream inputStream;
+
+ /**
+ * Constructor.
+ *
+ * @param path
+ * {@link Path} containing resource
+ */
+ public PathResourceStream(final Path path)
+ {
+ Args.notNull(path, "path");
+ this.path = path;
+ }
+
+ /**
+ * Constructor.
+ *
+ * @param file
+ * {@link java.io.File} containing resource
+ */
+ public PathResourceStream(final java.io.File file)
+ {
+ Args.notNull(file, "file");
+ this.path = file.toPath();
+ }
+
+ /**
+ * Constructor.
+ *
+ * @param file
+ * {@link File} containing resource
+ */
+ public PathResourceStream(final File file)
+ {
+ Args.notNull(file, "file");
+ this.path = file.toPath();
+ }
+
+ @Override
+ public InputStream getInputStream() throws
ResourceStreamNotFoundException
+ {
+ if (inputStream == null)
+ {
+ try
+ {
+ inputStream = Files.newInputStream(path);
+ }
+ catch (IOException e)
+ {
+ throw new ResourceStreamNotFoundException(
+ "Inputstream of path " + path + " could
not be acquired", e);
+ }
+ }
+ return inputStream;
+ }
+
+ @Override
+ public void close() throws IOException
+ {
+ if (inputStream != null)
+ {
+ inputStream.close();
+ inputStream = null;
+ }
+ }
+
+ @Override
+ public String getContentType()
+ {
+ try
+ {
+ String contentType =
URLConnection.getFileNameMap().getContentTypeFor(path.getFileName().toString());
+ if(contentType == null){
+ contentType = Files.probeContentType(path);
+ }
+ return contentType;
+ }
+ catch (IOException e)
+ {
+ throw new RuntimeException("content type of path " +
path + " could not be acquired",
+ e);
+ }
+ }
+
+ /**
+ * @return The path this resource resides in, if any.
+ */
+ public Path getPath()
+ {
+ return path;
+ }
+
+ @Override
+ public Time lastModifiedTime()
+ {
+ try
+ {
+ return Time.millis(Files.readAttributes(path,
BasicFileAttributes.class)
+ .lastModifiedTime()
+ .toMillis());
+ }
+ catch (IOException e)
+ {
+ throw new RuntimeException("length of path " + path + "
could not be acquired", e);
--- End diff --
s/length/Modification time/
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