package bndtools.refactor;
import java.io.InputStream;
import java.net.URI;
import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.filesystem.IFileInfo;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.ltk.core.refactoring.Change;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.eclipse.ltk.core.refactoring.resource.DeleteResourceChange;
import org.eclipse.ltk.core.refactoring.resource.ResourceChange;
public class CreateFileChange extends ResourceChange {
private final IPath path;
private final InputStream source;
private final int updateFlags;
private final String encoding;
/**
* Construct a CreateFileChange object.
*
* @param path
* The path of the new file.
* @param source
* Provides the content of the new file.
* @param updateFlags
* Flags for creation (for possible values see {@link IFile#create(InputStream, int, IProgressMonitor)}).
*/
public CreateFileChange(IPath path, InputStream source, int updateFlags, String encoding) {
this.path = path;
this.source = source;
this.updateFlags = updateFlags;
this.encoding = encoding;
}
@Override
protected IResource getModifiedResource() {
return ResourcesPlugin.getWorkspace().getRoot().getFile(path);
}
@Override
public String getName() {
return String.format("Create file %s", path.toString());
}
@Override
public Change perform(IProgressMonitor monitor) throws CoreException {
SubMonitor progress = SubMonitor.convert(monitor, encoding != null ? 2 : 1);
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
IFile file = root.getFile(path);
file.create(source, updateFlags, progress.newChild(1, SubMonitor.SUPPRESS_NONE));
if (encoding != null)
file.setCharset(encoding, progress.newChild(1, SubMonitor.SUPPRESS_NONE));
return new DeleteResourceChange(path, true);
}
@Override
public RefactoringStatus isValid(IProgressMonitor pm) throws CoreException {
RefactoringStatus result = new RefactoringStatus();
IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(path);
URI location = file.getLocationURI();
if (location == null) {
result.addFatalError(String.format("The location for file %s is unknown", path));
return result;
}
IFileInfo jFile = EFS.getStore(location).fetchInfo();
if (jFile.exists()) {
result.addFatalError(String.format("File %s already exists", path));
return result;
}
return result;
}
}