+++ /dev/null
-package org.argeo.eclipse.ui.specific;
-
-import static org.argeo.eclipse.ui.util.SingleSourcingConstants.FILE_SCHEME;
-import static org.argeo.eclipse.ui.util.SingleSourcingConstants.SCHEME_HOST_SEPARATOR;
-
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-
-import javax.servlet.ServletException;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
-import org.argeo.eclipse.ui.EclipseUiUtils;
-import org.argeo.eclipse.ui.util.SingleSourcingConstants;
-import org.eclipse.rap.rwt.service.ServiceHandler;
-
-/**
- * RWT specific Basic Default service handler that retrieves a file on the
- * server file system using its absolute path and forwards it to the end user
- * browser.
- *
- * Clients might extend to provide context specific services
- */
-public class OpenFileService implements ServiceHandler {
- public OpenFileService() {
- }
-
- public void service(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
- String fileName = request.getParameter(SingleSourcingConstants.PARAM_FILE_NAME);
- String uri = request.getParameter(SingleSourcingConstants.PARAM_FILE_URI);
-
- // Use buffered array to directly write the stream?
- if (!uri.startsWith(SingleSourcingConstants.FILE_SCHEME))
- throw new IllegalArgumentException(
- "Open file service can only handle files that are on the server file system");
-
- // Set the Metadata
- response.setContentLength((int) getFileSize(uri));
- if (EclipseUiUtils.isEmpty(fileName))
- fileName = getFileName(uri);
- response.setContentType(getMimeType(uri, fileName));
- String contentDisposition = "attachment; filename=\"" + fileName + "\"";
- response.setHeader("Content-Disposition", contentDisposition);
-
- // Useless for current use
- // response.setHeader("Content-Transfer-Encoding", "binary");
- // response.setHeader("Pragma", "no-cache");
- // response.setHeader("Cache-Control", "no-cache, must-revalidate");
-
- Path path = Paths.get(getAbsPathFromUri(uri));
- Files.copy(path, response.getOutputStream());
-
- // FIXME we always use temporary files for the time being.
- // the deleteOnClose file only works when the JVM is closed so we
- // explicitly delete to avoid overloading the server
- if (path.startsWith("/tmp"))
- path.toFile().delete();
- }
-
- protected long getFileSize(String uri) throws IOException {
- if (uri.startsWith(SingleSourcingConstants.FILE_SCHEME)) {
- Path path = Paths.get(getAbsPathFromUri(uri));
- return Files.size(path);
- }
- return -1l;
- }
-
- protected String getFileName(String uri) {
- if (uri.startsWith(SingleSourcingConstants.FILE_SCHEME)) {
- Path path = Paths.get(getAbsPathFromUri(uri));
- return path.getFileName().toString();
- }
- return null;
- }
-
- private String getAbsPathFromUri(String uri) {
- if (uri.startsWith(FILE_SCHEME))
- return uri.substring((FILE_SCHEME + SCHEME_HOST_SEPARATOR).length());
- // else if (uri.startsWith(JCR_SCHEME))
- // return uri.substring((JCR_SCHEME + SCHEME_HOST_SEPARATOR).length());
- else
- throw new IllegalArgumentException("Unknown URI prefix for" + uri);
- }
-
- protected String getMimeType(String uri, String fileName) throws IOException {
- if (uri.startsWith(FILE_SCHEME)) {
- Path path = Paths.get(getAbsPathFromUri(uri));
- String mimeType = Files.probeContentType(path);
- if (EclipseUiUtils.notEmpty(mimeType))
- return mimeType;
- }
- return "application/octet-stream";
- }
-}