-
Notifications
You must be signed in to change notification settings - Fork 2
/
HtmlDiffService.java
123 lines (96 loc) · 4.21 KB
/
HtmlDiffService.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletException;
import java.io.IOException;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.handler.AbstractHandler;
import java.util.Locale;
import org.outerj.daisy.diff.HtmlCleaner;
import org.outerj.daisy.diff.XslFilter;
import org.outerj.daisy.diff.html.HTMLDiffer;
import org.outerj.daisy.diff.html.HtmlSaxDiffOutput;
import org.outerj.daisy.diff.html.TextNodeComparator;
import org.outerj.daisy.diff.html.dom.DomTreeBuilder;
import java.io.File;
import java.io.FileInputStream;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.ByteArrayInputStream;
import java.util.Locale;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TransformerHandler;
import javax.xml.transform.stream.StreamResult;
import org.outerj.daisy.diff.html.HTMLDiffer;
import org.outerj.daisy.diff.html.HtmlSaxDiffOutput;
import org.outerj.daisy.diff.html.TextNodeComparator;
import org.outerj.daisy.diff.html.dom.DomTreeBuilder;
import org.xml.sax.ContentHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
public class HtmlDiffService extends AbstractHandler
{
public void handle(String target,
Request baseRequest,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException
{
response.setContentType("text/html;charset=utf-8");
response.setStatus(HttpServletResponse.SC_OK);
baseRequest.setHandled(true);
boolean htmlOut = false;
try {
String oldString = request.getParameter("old");
String newString = request.getParameter("new");
if (oldString == null || newString == null) {
return;
}
InputStream oldStream = new ByteArrayInputStream( oldString.getBytes( ) );
InputStream newStream = new ByteArrayInputStream( newString.getBytes( ) );
SAXTransformerFactory tf = (SAXTransformerFactory) TransformerFactory.newInstance();
TransformerHandler result = tf.newTransformerHandler();
result.getTransformer().setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
result.setResult(new StreamResult(response.getOutputStream()));
String[] css = new String[]{};
XslFilter filter = new XslFilter();
Locale locale = Locale.getDefault();
String prefix = "diff";
HtmlCleaner cleaner = new HtmlCleaner();
DomTreeBuilder oldHandler = new DomTreeBuilder();
InputSource oldSource = new InputSource(oldStream);
oldSource.setEncoding("UTF-8");
InputSource newSource = new InputSource(newStream);
newSource.setEncoding("UTF-8");
cleaner.cleanAndParse(oldSource, oldHandler);
TextNodeComparator leftComparator = new TextNodeComparator(oldHandler, locale);
DomTreeBuilder newHandler = new DomTreeBuilder();
cleaner.cleanAndParse(newSource, newHandler);
TextNodeComparator rightComparator = new TextNodeComparator(newHandler, locale);
result.startDocument();
HtmlSaxDiffOutput output = new HtmlSaxDiffOutput(result, prefix);
HTMLDiffer differ = new HTMLDiffer(output);
differ.diff(leftComparator, rightComparator);
result.endDocument();
} catch (Throwable e) {
e.printStackTrace();
if (e.getCause() != null) {
e.getCause().printStackTrace();
}
if (e instanceof SAXException) {
((SAXException) e).getException().printStackTrace();
}
}
}
public static void main(String[] args) throws Exception
{
Server server = new Server(5001);
server.setHandler(new HtmlDiffService());
server.start();
server.join();
}
}