1 package org
.argeo
.app
.servlet
.publish
;
3 import java
.io
.IOException
;
4 import java
.io
.InputStream
;
5 import java
.io
.OutputStream
;
6 import java
.io
.StringReader
;
7 import java
.io
.StringWriter
;
10 import java
.net
.URLDecoder
;
11 import java
.nio
.charset
.StandardCharsets
;
12 import java
.nio
.file
.Files
;
13 import java
.nio
.file
.Paths
;
15 import java
.util
.Objects
;
17 import javax
.servlet
.ServletException
;
18 import javax
.servlet
.http
.HttpServlet
;
19 import javax
.servlet
.http
.HttpServletRequest
;
20 import javax
.servlet
.http
.HttpServletResponse
;
21 import javax
.xml
.parsers
.DocumentBuilderFactory
;
22 import javax
.xml
.transform
.Result
;
23 import javax
.xml
.transform
.Source
;
24 import javax
.xml
.transform
.Templates
;
25 import javax
.xml
.transform
.Transformer
;
26 import javax
.xml
.transform
.TransformerConfigurationException
;
27 import javax
.xml
.transform
.TransformerException
;
28 import javax
.xml
.transform
.TransformerFactory
;
29 import javax
.xml
.transform
.URIResolver
;
30 import javax
.xml
.transform
.sax
.SAXResult
;
31 import javax
.xml
.transform
.stream
.StreamResult
;
32 import javax
.xml
.transform
.stream
.StreamSource
;
34 import org
.apache
.fop
.apps
.FOPException
;
35 import org
.apache
.fop
.apps
.Fop
;
36 import org
.apache
.fop
.apps
.FopFactory
;
37 import org
.apache
.fop
.apps
.FopFactoryBuilder
;
38 import org
.apache
.xalan
.processor
.TransformerFactoryImpl
;
39 import org
.apache
.xmlgraphics
.io
.Resource
;
40 import org
.apache
.xmlgraphics
.io
.ResourceResolver
;
41 import org
.argeo
.api
.acr
.Content
;
42 import org
.argeo
.api
.acr
.ContentRepository
;
43 import org
.argeo
.api
.acr
.ContentSession
;
44 import org
.argeo
.app
.geo
.GeoUtils
;
45 import org
.argeo
.app
.geo
.GpxUtils
;
46 import org
.argeo
.cms
.acr
.xml
.XmlNormalizer
;
47 import org
.argeo
.cms
.auth
.RemoteAuthUtils
;
48 import org
.argeo
.cms
.servlet
.ServletHttpRequest
;
49 import org
.argeo
.cms
.util
.LangUtils
;
50 import org
.geotools
.data
.collection
.ListFeatureCollection
;
51 import org
.geotools
.data
.simple
.SimpleFeatureCollection
;
52 import org
.opengis
.feature
.simple
.SimpleFeature
;
55 * A servlet transforming an XML view of the data to either FOP or PDF.
57 public class FopServlet
extends HttpServlet
{
58 private static final long serialVersionUID
= 6906020513498289335L;
60 private final static String PROP_ARGEO_FO_XSL
= "argeo.fo.xsl";
62 private ContentRepository contentRepository
;
64 private DocumentBuilderFactory documentBuilderFactory
;
65 private TransformerFactory transformerFactory
;
66 private Templates foTemplates
;
71 protected void doGet(HttpServletRequest req
, HttpServletResponse resp
) throws ServletException
, IOException
{
72 String servletPath
= req
.getServletPath();
73 String ext
= servletPath
.substring(servletPath
.lastIndexOf('.'));
74 servletPath
= servletPath
.substring(1, servletPath
.lastIndexOf('.'));
75 servletPath
= servletPath
.substring(servletPath
.indexOf('/'), servletPath
.length());
76 String path
= URLDecoder
.decode(servletPath
, StandardCharsets
.UTF_8
);
78 boolean pdf
= ".pdf".equals(ext
);
79 ContentSession session
= RemoteAuthUtils
.doAs(() -> contentRepository
.get(), new ServletHttpRequest(req
));
80 Content content
= session
.get(path
);
83 final boolean DEV
= false;
85 try (InputStream in
= xslUrl
.openStream()) {
86 Source xslSource
= new StreamSource(in
);
87 foTemplates
= transformerFactory
.newTemplates(xslSource
);
88 if (foTemplates
== null)
89 throw new IllegalStateException("Could not instantiate XSL " + xslUrl
);
90 } catch (TransformerConfigurationException
| IOException e
) {
91 throw new IllegalStateException("Cannot instantiate XSL " + xslUrl
, e
);
94 Source xmlInput
= content
.adapt(Source
.class);
95 XmlNormalizer
.print(xmlInput
,0);
98 Source xmlInput
= content
.adapt(Source
.class);
99 String systemId
= req
.getRequestURL().toString();
100 xmlInput
.setSystemId(systemId
);
102 URIResolver uriResolver
= (href
, base
) -> {
104 URI url
= URI
.create(href
);
105 if (url
.getScheme() != null) {
106 if (url
.getScheme().equals("file")) {
107 InputStream in
= Files
.newInputStream(Paths
.get(URI
.create(url
.toString())));
108 return new StreamSource(in
);
110 if (url
.getScheme().equals("geo2svg")) {
111 String includePath
= path
+ url
.getPath();
112 String geoExt
= includePath
.substring(includePath
.lastIndexOf('.'));
113 Content geoContent
= session
.get(includePath
);
114 if (".gpx".equals(geoExt
)) {
115 try (InputStream in
= geoContent
.open(InputStream
.class)) {
116 SimpleFeature field
= GpxUtils
.parseGpxToPolygon(in
);
117 SimpleFeatureCollection features
= new ListFeatureCollection(field
.getType(), field
);
118 try (StringWriter writer
= new StringWriter()) {
119 GeoUtils
.exportToSvg(features
, writer
, 100, 100);
120 StreamSource res
= new StreamSource(new StringReader(writer
.toString()));
125 throw new UnsupportedOperationException(geoExt
+ " is not supported");
129 } catch (IOException e
) {
130 throw new RuntimeException("Cannot process " + href
);
133 String p
= href
.startsWith("/") ? href
: path
+ '/' + href
;
134 Content subContent
= session
.get(p
);
135 return subContent
.adapt(Source
.class);
138 ResourceResolver resourceResolver
= new ResourceResolver() {
141 public Resource
getResource(URI uri
) throws IOException
{
142 String subPath
= uri
.getPath();
143 Content subContent
= session
.get(subPath
);
144 InputStream in
= subContent
.open(InputStream
.class);
145 return new Resource(in
);
149 public OutputStream
getOutputStream(URI uri
) throws IOException
{
156 FopFactoryBuilder builder
= new FopFactoryBuilder(URI
.create(req
.getRequestURL().toString()),
158 FopFactory fopFactory
= builder
.build();
159 // FopFactory fopFactory = FopFactory.newInstance(URI.create(req.getRequestURL().toString()));
160 resp
.setContentType("application/pdf");
161 Fop fop
= fopFactory
.newFop("application/pdf", resp
.getOutputStream());
162 Transformer transformer
= foTemplates
.newTransformer();
163 transformer
.setURIResolver(uriResolver
);
164 Result fopResult
= new SAXResult(fop
.getDefaultHandler());
165 transformer
.transform(xmlInput
, fopResult
);
168 Result xmlOutput
= new StreamResult(resp
.getOutputStream());
169 resp
.setContentType("application/xml");
170 Transformer transformer
= foTemplates
.newTransformer();
171 // transformer = transformerFactory.newTransformer();// identity
172 transformer
.setURIResolver(uriResolver
);
173 transformer
.transform(xmlInput
, xmlOutput
);
175 } catch (FOPException
| IOException
| TransformerException e
) {
176 throw new RuntimeException("Cannot process " + path
, e
);
182 public void init() throws ServletException
{
183 // for (Enumeration<String> it = getServletConfig().getInitParameterNames(); it.hasMoreElements();)
184 // System.out.println(it.nextElement());
185 // for (String str : getServletContext().getResourcePaths("/"))
186 // System.out.println(str);
189 public void start(Map
<String
, Object
> properties
) {
190 documentBuilderFactory
= DocumentBuilderFactory
.newInstance();
191 documentBuilderFactory
.setXIncludeAware(true);
192 documentBuilderFactory
.setNamespaceAware(true);
194 // We must explicitly use the non-XSLTC transformer, as XSLTC is not working
195 // with DocBook stylesheets
196 transformerFactory
= new TransformerFactoryImpl();
197 // transformerFactory = TransformerFactory.newDefaultInstance();
199 String xslStr
= LangUtils
.get(properties
, PROP_ARGEO_FO_XSL
);
200 Objects
.requireNonNull(xslStr
);
201 xslUrl
= new URL(xslStr
);
202 try (InputStream in
= xslUrl
.openStream()) {
203 Source xslSource
= new StreamSource(in
);
204 foTemplates
= transformerFactory
.newTemplates(xslSource
);
205 if (foTemplates
== null)
206 throw new IllegalStateException("Could not instantiate XSL " + xslUrl
);
209 } catch (TransformerConfigurationException
| IOException e
) {
210 throw new IllegalStateException("Cannot instantiate XSL " + xslUrl
, e
);
214 public void stop(Map
<String
, Object
> properties
) {
218 public void setContentRepository(ContentRepository contentRepository
) {
219 this.contentRepository
= contentRepository
;