Eclipse PDE: Get full path of an external file open in Workbench - pde

Question

I am writing an Eclipse Plugin which requires me to get full path of any kind of file open in the Workspace.
I am able to get full path of any file which is part of any Eclipse project. Code to get open/active editor file from workspace.
public static String getActiveFilename(IWorkbenchWindow window) {
IWorkbenchPage activePage = window.getActivePage();
IEditorInput input = activePage.getActiveEditor().getEditorInput();
String name = activePage.getActiveEditor().getEditorInput().getName();
PluginUtils.log(activePage.getActiveEditor().getClass() +" Editor.");
IPath path = input instanceof FileEditorInput ? ((FileEditorInput) input).getPath() : null;
if (path != null) {
return path.toPortableString();
}
return name;
}
However, if any file is drag-dropped in Workspace or opened using File -> Open File. For instance, I opened a file from /Users/mac/log.txt from File -> Open File. My plugin is not able to find location of this file.

Answer 1

After couple of days search, I found the answer by looking at the source code of Eclipse IDE.
In IDE.class, Eclipse tries to find a suitable editor input depending on the workspace file or an external file. Eclipse handles files in workspace using FileEditorInput and external files using FileStoreEditorInput. Code snippet below:
/**
* Create the Editor Input appropriate for the given <code>IFileStore</code>.
* The result is a normal file editor input if the file exists in the
* workspace and, if not, we create a wrapper capable of managing an
* 'external' file using its <code>IFileStore</code>.
*
* #param fileStore
* The file store to provide the editor input for
* #return The editor input associated with the given file store
* #since 3.3
*/
private static IEditorInput getEditorInput(IFileStore fileStore) {
IFile workspaceFile = getWorkspaceFile(fileStore);
if (workspaceFile != null)
return new FileEditorInput(workspaceFile);
return new FileStoreEditorInput(fileStore);
}
I have modified the code posted in the question to handle both files in Workspace and external file.
public static String getActiveEditorFilepath(IWorkbenchWindow window) {
IWorkbenchPage activePage = window.getActivePage();
IEditorInput input = activePage.getActiveEditor().getEditorInput();
String name = activePage.getActiveEditor().getEditorInput().getName();
//Path of files in the workspace.
IPath path = input instanceof FileEditorInput ? ((FileEditorInput) input).getPath() : null;
if (path != null) {
return path.toPortableString();
}
//Path of the externally opened files in Editor context.
try {
URI urlPath = input instanceof FileStoreEditorInput ? ((FileStoreEditorInput) input).getURI() : null;
if (urlPath != null) {
return new File(urlPath.toURL().getPath()).getAbsolutePath();
}
} catch (MalformedURLException e) {
e.printStackTrace();
}
//Fallback option to get at least name
return name;
}