Escape result of FileLocator.resolve(url)

Question

The method FileLocator.resolve(url) can be used to translate an address bundleentry://something/somewhere/x.txt to a proper file URL for /mnt/foo

Answer 1

Two additional notes:

• FileLocator.resolve indeed resolves an URL, but it does not necessarily return a file:/ URL. In the default case where your bundle is packed (in a .jar), you should use FileLocator.toFileURL, which automatically extracts the resource to a cache if needed.
• since Eclipse 4.x now includes EMF Common API by default, you can escape the URL more simply with EMF's URI API as follows:

URI resolvedUri = URI.createFileURI(resolved.getPath());

To get the file name, call resolvedUri.toFileString();

Answer 2

I just found this code:

http://code.google.com/p/dart/source/browse/branches/bleeding_edge/dart/editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/internal/model/BundledSystemLibrary.java?r=2057

The relevant lines indeed help:

// We need to use the 3-arg constructor of URI in order to properly escape file system chars.
URI resolvedUri = new URI(resolvedUrl.getProtocol(), resolvedUrl.getPath(), null);

Answer 3

From Vogella Blog:

URL url;
try {
    url = new 
    URL("platform:/plugin/de.vogella.rcp.plugin.filereader/files/test.txt");
    InputStream inputStream = url.openConnection().getInputStream();
    BufferedReader in = new BufferedReader(new InputStreamReader(inputStream));
    String inputLine;

while ((inputLine = in.readLine()) != null) {
    System.out.println(inputLine);
}

in.close();

} catch (IOException e) {
    e.printStackTrace();
}

To get the URL, Following can be used:

Bundle thisBundle = FrameworkUtil.getBundle(getClass());
URL fileURL = thisBundle.getEntry("<relative_file_path_from_project_root");

Also, one can choose the type of Stream/Reader to read image/text.