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annotate src/luan/webserver/handlers/FileHandler.java @ 1140:bf03d687eaff

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webserver - add dir handling
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 29 Jan 2018 22:21:59 -0700
parents 8126370ea8c0
children 49fb4e83484f
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1 package luan.webserver.handlers;
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2
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3 import java.io.File;
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4 import java.io.FileInputStream;
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5 import java.io.Writer;
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6 import java.io.OutputStreamWriter;
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7 import java.io.IOException;
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8 import java.text.DateFormat;
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9 import java.text.SimpleDateFormat;
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10 import java.util.Date;
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11 import luan.webserver.Handler;
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12 import luan.webserver.Request;
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13 import luan.webserver.Response;
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14 import luan.webserver.ResponseOutputStream;
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16
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17 public final class FileHandler implements Handler {
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18 public boolean showDirs = true;
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19 private final File dir;
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20
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21 public FileHandler() {
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22 this(".");
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23 }
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25 public FileHandler(String pathname) {
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26 this(new File(pathname));
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27 }
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29 public FileHandler(File dir) {
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30 if( !dir.isDirectory() )
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31 throw new RuntimeException("must be a directory");
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32 this.dir = dir;
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33 }
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34
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35 public Response handle(Request request) {
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36 try {
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37 File file = new File(dir,request.path);
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38 if( file.isFile() ) {
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39 Response response = new Response();
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40 response.body = new Response.Body( file.length(), new FileInputStream(file) );
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41 return response;
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42 }
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43 if( request.path.endsWith("/") && file.isDirectory() && showDirs ) {
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44 DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss zzz");
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45 Response response = new Response();
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46 response.headers.put( "Content-Type", "text/html; charset=UTF-8" );
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47 Writer writer = new OutputStreamWriter( new ResponseOutputStream(response) );
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48 writer.write( "<!doctype html><html>" );
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49 writer.write( "<head><style>td{padding: 2px 8px}</style></head>" );
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50 writer.write( "<body>" );
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51 writer.write( "<h1>Directory: "+request.path+"</h1>" );
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52 writer.write( "<table border=0>" );
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53 for( File child : file.listFiles() ) {
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54 String name = child.getName();
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55 if( child.isDirectory() )
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56 name += '/';
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57 writer.write( "<tr>" );
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58 writer.write( "<td><a href='"+name+"'>"+name+"</a></td>" );
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59 writer.write( "<td>"+child.length()+" bytes</td>" );
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60 writer.write( "<td>"+fmt.format(new Date(child.lastModified()))+"</td>" );
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61 writer.write( "</tr>" );
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62 }
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63 writer.write( "</table>" );
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64 writer.write( "</body>" );
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65 writer.write( "</html>" );
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66 writer.close();
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67 return response;
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68 }
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69 return null;
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70 } catch(IOException e) {
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71 throw new RuntimeException(e);
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72 }
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73 }
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74 }