X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;ds=inline;f=base%2Fruntime%2Forg.argeo.eclipse.ui.rap%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Feclipse%2Fui%2Fspecific%2FOpenFileService.java;fp=base%2Fruntime%2Forg.argeo.eclipse.ui.rap%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Feclipse%2Fui%2Fspecific%2FOpenFileService.java;h=e48babf0bba7df111a64f2d8ccf9cf6c57e00c5e;hb=7b89e3fc7a04b7a89488a757dc26c9bc1f9c08ce;hp=0000000000000000000000000000000000000000;hpb=7aacada67cd7fc0c5e84c100fc2ec863ea96759b;p=lgpl%2Fargeo-commons.git diff --git a/base/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/OpenFileService.java b/base/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/OpenFileService.java new file mode 100644 index 000000000..e48babf0b --- /dev/null +++ b/base/runtime/org.argeo.eclipse.ui.rap/src/main/java/org/argeo/eclipse/ui/specific/OpenFileService.java @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2007-2012 Argeo GmbH + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.argeo.eclipse.ui.specific; + +import java.io.File; +import java.io.IOException; + +import javax.servlet.ServletException; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +import org.apache.commons.io.FileUtils; +import org.argeo.ArgeoException; +import org.eclipse.rap.rwt.service.ServiceHandler; + +/** + * 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. Rap + * specific. + * + * Clients might extend to provide context specific services (to open files from + * a JCR repository for instance) + */ +public class OpenFileService implements ServiceHandler { + public final static String PARAM_FILE_NAME = "param.fileName"; + public final static String PARAM_FILE_URI = "param.fileURI"; + + public final static String SCHEME_HOST_SEPARATOR = "://"; + public final static String FILE_SCHEME = "file"; + + public OpenFileService() { + } + + public void service(HttpServletRequest request, HttpServletResponse response) + throws IOException, ServletException { + String fileName = request.getParameter(PARAM_FILE_NAME); + String uri = request.getParameter(PARAM_FILE_URI); + + // Set the Metadata + response.setContentType("application/octet-stream"); + response.setContentLength((int) getFileLength(uri)); + if (fileName == null || "".equals(fileName.trim())) + fileName = getFileName(uri); + String contentDisposition = "attachment; filename=\"" + fileName + "\""; + response.setHeader("Content-Disposition", contentDisposition); + + response.getOutputStream().write(getFileAsByteArray(uri)); + // FileUtils.readFileToByteArray(new File(path)) + } + + protected byte[] getFileAsByteArray(String uri) { + if (uri.startsWith(FILE_SCHEME)) { + try { + return FileUtils.readFileToByteArray(new File( + getFilePathFromUri(uri))); + } catch (IOException ioe) { + throw new ArgeoException("Error while getting the file at " + + uri, ioe); + } + } + return null; + } + + protected long getFileLength(String uri) { + if (uri.startsWith(FILE_SCHEME)) { + return new File(getFilePathFromUri(uri)).length(); + } + return -1l; + } + + protected String getFileName(String uri) { + if (uri.startsWith(FILE_SCHEME)) { + return new File(getFilePathFromUri(uri)).getName(); + } + return null; + } + + private String getFilePathFromUri(String uri) { + return uri.substring((FILE_SCHEME + SCHEME_HOST_SEPARATOR).length()); + } + +} \ No newline at end of file