if (argv.length < 1) {
System.err.println ("Usage: filename");
return;
}
String file = argv [0];
ByteBuffer header = ByteBuffer.wrap (bytes (HTTP_HDR));
ByteBuffer dynhdrs = ByteBuffer.allocate (128);
ByteBuffer [] gather = { header, dynhdrs, null };
String contentType = "unknown/unknown";
long contentLength = -1;
try {
FileInputStream fis = new FileInputStream (file);
FileChannel fc = fis.getChannel();
MappedByteBuffer filedata =
fc.map (MapMode.READ_ONLY, 0, fc.size());
gather [2] = filedata;
contentLength = fc.size();
contentType = URLConnection.guessContentTypeFromName (file);
} catch (IOException e) {
// file could not be opened, report problem
ByteBuffer buf = ByteBuffer.allocate (128);
String msg = MSG_404 + e + LINE_SEP;
buf.put (bytes (msg));
buf.flip();
// use the HTTP error response
gather [0] = ByteBuffer.wrap (bytes (HTTP_404_HDR));
gather [2] = buf;
contentLength = msg.length();
contentType = "text/plain";
}
StringBuffer sb = new StringBuffer();
sb.append ("Content-Length: " + contentLength);
sb.append (LINE_SEP);
sb.append ("Content-Type: ").append (contentType);
sb.append (LINE_SEP).append (LINE_SEP);
dynhdrs.put (bytes (sb.toString()));
dynhdrs.flip();
FileOutputStream fos = new FileOutputStream (OUTPUT_FILE);
FileChannel out = fos.getChannel();
// all the buffers have been prepared, write 'em out
while (out.write (gather) > 0) {
// empty body, loop until all buffers empty
}
out.close();
System.out.println ("output written to " + OUTPUT_FILE);
