+package org.argeo.support.odk.servlet;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.URLDecoder;
+import java.nio.charset.StandardCharsets;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.jcr.Repository;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.commons.io.FilenameUtils;
+import org.argeo.cms.servlet.ServletAuthUtils;
+import org.argeo.jcr.Jcr;
+import org.argeo.support.odk.OdkForm;
+import org.argeo.support.odk.OdkNames;
+
+/** Retrieves a single form. */
+public class OdkFormServlet extends HttpServlet {
+ private static final long serialVersionUID = 7838305967987687370L;
+
+ private Repository repository;
+ private Map<String, OdkForm> odkForms = Collections.synchronizedMap(new HashMap<>());
+
+ @Override
+ protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+ resp.setContentType("text/xml; charset=utf-8");
+
+ Session session = ServletAuthUtils.doAs(() -> Jcr.login(repository, null), req);
+
+ String pathInfo = req.getPathInfo();
+ if (pathInfo.startsWith("//"))
+ pathInfo = pathInfo.substring(1);
+
+ boolean oldApproach = false;
+ try {
+ if (!oldApproach) {
+ String path = URLDecoder.decode(pathInfo, StandardCharsets.UTF_8);
+ session.exportDocumentView(path + "/" + OdkNames.H_HTML, resp.getOutputStream(), true, false);
+ } else {
+
+ String fileName = FilenameUtils.getName(pathInfo);
+ OdkForm form = odkForms.get(fileName);
+ if (form == null)
+ throw new IllegalArgumentException("No form named " + fileName + " was found");
+
+ byte[] buffer = new byte[1024];
+ try (InputStream in = form.openStream(); OutputStream out = resp.getOutputStream();) {
+ int bytesRead;
+ while ((bytesRead = in.read(buffer)) != -1)
+ out.write(buffer, 0, bytesRead);
+ }
+ }
+ } catch (RepositoryException e) {
+ e.printStackTrace();
+ // TODO error message
+ resp.sendError(500);
+ } finally {
+ Jcr.logout(session);
+ }
+ }
+
+ public void addForm(OdkForm odkForm) {
+ odkForms.put(odkForm.getFileName(), odkForm);
+ }
+
+ public void removeForm(OdkForm odkForm) {
+ odkForms.remove(odkForm.getFileName());
+ }
+
+ public void setRepository(Repository repository) {
+ this.repository = repository;
+ }
+
+}