+++ /dev/null
-package org.argeo.publishing.servlet;
-
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.URLDecoder;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
-import java.nio.file.Paths;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Map;
-
-import javax.jcr.Node;
-import javax.jcr.Repository;
-import javax.jcr.RepositoryException;
-import javax.jcr.Session;
-import javax.jcr.nodetype.NodeType;
-import javax.servlet.ServletException;
-import javax.servlet.http.HttpServlet;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.transform.Result;
-import javax.xml.transform.Source;
-import javax.xml.transform.Templates;
-import javax.xml.transform.Transformer;
-import javax.xml.transform.TransformerConfigurationException;
-import javax.xml.transform.TransformerFactory;
-import javax.xml.transform.dom.DOMSource;
-import javax.xml.transform.stream.StreamResult;
-import javax.xml.transform.stream.StreamSource;
-
-import org.apache.commons.io.IOUtils;
-import org.apache.xalan.processor.TransformerFactoryImpl;
-import org.argeo.cms.servlet.ServletAuthUtils;
-import org.argeo.cms.ui.CmsTheme;
-import org.argeo.docbook.DbkType;
-import org.argeo.docbook.DbkUtils;
-import org.argeo.jcr.Jcr;
-import org.argeo.jcr.JcrException;
-import org.argeo.jcr.JcrUtils;
-import org.w3c.dom.Document;
-
-/**
- * A servlet transforming a dbk:* JCR node into HTML, using the DocBook XSL.
- */
-public class DbkServlet extends HttpServlet {
- private static final long serialVersionUID = 6906020513498289335L;
-
- private Repository repository;
-
- private DocumentBuilderFactory documentBuilderFactory;
- private TransformerFactory transformerFactory;
- private Templates docBoookTemplates;
-
- private Map<String, CmsTheme> themes = Collections.synchronizedMap(new HashMap<>());
-
- @Override
- protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
-
- String pathInfo = req.getPathInfo();
- if (pathInfo.startsWith("//"))
- pathInfo = pathInfo.substring(1);
- String path = URLDecoder.decode(pathInfo, StandardCharsets.UTF_8);
-
- if (path.toLowerCase().endsWith(".css")) {
- path = path.substring(1);
- int firstSlash = path.indexOf('/');
- String themeId = path.substring(0, firstSlash);
- String cssPath = path.substring(firstSlash);
- CmsTheme cmsTheme = themes.get(themeId);
- if (cmsTheme == null)
- throw new IllegalArgumentException("Theme " + themeId + " not found.");
- resp.setContentType("text/css");
- IOUtils.copy(cmsTheme.getResourceAsStream(cssPath), resp.getOutputStream());
- return;
- }
-
- if (path.toLowerCase().endsWith("/index.html")) {
- path = path.substring(0, path.length() - "/index.html".length());
- }
-
- Session session = null;
- try {
- session = ServletAuthUtils.doAs(() -> Jcr.login(repository, null), req);
- Node node = session.getNode(path);
-
- if (node.hasNode(DbkType.article.get())) {
- Node dbkNode = node.getNode(DbkType.article.get());
- if (DbkUtils.isDbk(dbkNode)) {
- CmsTheme cmsTheme = null;
- String themeId = req.getParameter("themeId");
- if (themeId != null) {
- cmsTheme = themes.get(themeId);
- if (cmsTheme == null)
- throw new IllegalArgumentException("Theme " + themeId + " not found.");
- }
-
- // TODO customise DocBook so that it outputs UTF-8
- // see http://www.sagehill.net/docbookxsl/OutputEncoding.html
- resp.setContentType("text/html; charset=ISO-8859-1");
-
- // TODO optimise with pipes, SAX, etc. ?
- byte[] arr;
- try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
- session.exportDocumentView(dbkNode.getPath(), out, true, false);
- arr = out.toByteArray();
-// System.out.println(new String(arr, StandardCharsets.UTF_8));
- } catch (RepositoryException e) {
- throw new JcrException(e);
- }
-
- try (InputStream in = new ByteArrayInputStream(arr);
-// ByteArrayOutputStream out = new ByteArrayOutputStream();
- ) {
-
- Result xmlOutput = new StreamResult(resp.getOutputStream());
-
- DocumentBuilder docBuilder = documentBuilderFactory.newDocumentBuilder();
-// Document doc = docBuilder.parse(new File(
-// System.getProperty("user.home") + "/dev/git/gpl/argeo-qa/doc/platform/argeo-platform.dbk.xml"));
- Document doc = docBuilder.parse(in);
- Source xmlInput = new DOMSource(doc);
-
- Transformer transformer = docBoookTemplates.newTransformer();
-
- // gather CSS
- if (cmsTheme != null) {
- StringBuilder sb = new StringBuilder();
- for (String cssPath : cmsTheme.getWebCssPaths()) {
- sb.append(req.getContextPath()).append(req.getServletPath()).append('/');
- sb.append(themeId).append('/').append(cssPath).append(' ');
- }
- // FIXME make it more generic
- sb.append("https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap")
- .append(' ');
- sb.append(
- "https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,300;0,400;0,600;1,400&display=swap")
- .append(' ');
- if (sb.length() > 0)
- transformer.setParameter("html.stylesheet", sb.toString());
- }
- transformer.transform(xmlInput, xmlOutput);
-// resp.getOutputStream().write(out.toByteArray());
- } catch (Exception e) {
- throw new ServletException("Cannot transform " + path, e);
- }
- }
- } else {
- if (node.isNodeType(NodeType.NT_FILE)) {// media download etc.
- String fileNameLowerCase = node.getName().toLowerCase();
- if (fileNameLowerCase.endsWith(".jpg") || fileNameLowerCase.endsWith(".jpeg")) {
- resp.setContentType("image/jpeg");
- } else if (fileNameLowerCase.endsWith(".png")) {
- resp.setContentType("image/png");
- } else if (fileNameLowerCase.endsWith(".gif")) {
- resp.setContentType("image/gif");
- } else if (fileNameLowerCase.endsWith(".svg")) {
- resp.setContentType("image/svg+xml");
- } else {
- // TODO know more content types...
- resp.setHeader("Content-Disposition", "attachment; filename=\"" + node.getName() + "\"");
- }
- IOUtils.copy(JcrUtils.getFileAsStream(node), resp.getOutputStream());
- } else {
- throw new IllegalArgumentException("Unsupported node " + node);
- }
- }
- } catch (RepositoryException e1) {
- throw new JcrException(e1);
- } finally {
- Jcr.logout(session);
- }
- }
-
- @Override
- public void init() throws ServletException {
-
- // TODO improve configuration and provisioning of DocBook XSL
- String xslBase = System.getProperty("argeo.docbook.xsl");
- if (xslBase == null) {
- String defaultXslBase = "/opt/docbook-xsl";
- if (!Files.exists(Paths.get(defaultXslBase))) {
- throw new ServletException("System property argeo.docbook.xsl is not set and default location "
- + defaultXslBase + " does not exist.");
- } else {
- xslBase = defaultXslBase;
- }
- }
- String xsl = xslBase + "/html/docbook.xsl";
-
- documentBuilderFactory = DocumentBuilderFactory.newInstance();
- documentBuilderFactory.setXIncludeAware(true);
- documentBuilderFactory.setNamespaceAware(true);
-
- // We must explicitly use the non-XSLTC transformer, as XSLTC is not working
- // with DocBook stylesheets
- transformerFactory = new TransformerFactoryImpl();
-
- Source xslSource = new StreamSource(xsl);
- try {
- docBoookTemplates = transformerFactory.newTemplates(xslSource);
- if (docBoookTemplates == null)
- throw new ServletException("Could not instantiate XSL " + xsl);
- } catch (TransformerConfigurationException e) {
- throw new ServletException("Cannot instantiate XSL " + xsl, e);
- }
- }
-
- public void setRepository(Repository repository) {
- this.repository = repository;
- }
-
- public void addTheme(CmsTheme theme, Map<String, String> properties) {
- themes.put(theme.getThemeId(), theme);
- }
-
- public void removeTheme(CmsTheme theme, Map<String, String> properties) {
- themes.remove(theme.getThemeId());
- }
-
-}
projects / gpl / argeo-suite.git / blobdiff