@Override
public void doGet(final HttpServletRequest request, final HttpServletResponse response)
throws ServletException, IOException {
// set MIME type and encoding
response.setContentType("text/html");
response.setCharacterEncoding("UTF-8");
// get writer for output
final PrintWriter p = response.getWriter();
// make sure that we have obtained an access token, otherwise redirect
// to login
final String accessToken = request.getParameter("access_token");
if (accessToken == null) {
response.sendRedirect(Config.getValue("LOGIN_URL"));
return;
} else {
// Store the token in a session
HttpSession session = request.getSession();
session.setAttribute(Config.getValue("ACCESS_TOKEN_SESSION"), accessToken);
}
// get client
final DefaultFacebookClient client = new DefaultFacebookClient(accessToken);
// retrieve the document with all friend user ids
try {
final URL url =
new URL(
"https://api.facebook.com/method/fql.query?access_token="
+ accessToken
+ "&query="
+ URLEncoder.encode(
"SELECT name,uid,pic_square FROM user WHERE uid IN ( SELECT uid2 FROM friend WHERE uid1=me() ) ORDER BY name;",
"UTF-8"));
final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
final DocumentBuilder builder = factory.newDocumentBuilder();
final Document doc = builder.parse(url.openStream());
// returns an XML tree
// OutputGenerator.transformToXML(new DOMSource(doc), new
// StreamResult(p));
// transform the XML to HTML
String xslFile = File.separator + "xsl" + File.separator + "facebook.xsl";
final StreamSource source =
new StreamSource(new File(this.getServletContext().getRealPath(xslFile)));
OutputGenerator.transformWithStyle(new DOMSource(doc), source, new StreamResult(p));
} catch (final Exception e) {
System.out.println(e.getMessage());
e.printStackTrace();
}
p.flush();
p.close();
}
public static void main(String[] args) {
try {
CLI.parse(args, new String[0]);
InputStream inputStream =
args.length == 0 ? System.in : new java.io.FileInputStream(CLI.infile);
if (CLI.target == Action.SCAN) {
CScanner scanner = new CScanner(new DataInputStream(inputStream));
scanner.setTrace(CLI.debug);
Token token;
boolean done = false;
while (!done) {
try {
for (token = scanner.nextToken();
token.getType() != CParserTokenTypes.EOF;
token = scanner.nextToken()) {
System.out.println(token.getType());
}
done = true;
} catch (Exception e) {
// print the error:
System.out.println("ERROR: " + CLI.infile + " " + e);
scanner.consume();
}
}
} else if (CLI.target == Action.PARSE
|| CLI.target == Action.DOT
|| CLI.target == Action.DEFAULT) {
CScanner scanner = new CScanner(new DataInputStream(inputStream));
CParser parser = new CParser(scanner);
parser.setTrace(CLI.debug);
parser.program();
if (parser.getError()) {
System.out.println("ERROR");
System.exit(-1);
}
if (CLI.target == Action.DOT) {
System.out.println(TreeVisualizer.generateDOT(parser.getAST()));
}
} else if (CLI.target == Action.LOWIR) {
CScanner scanner = new CScanner(new DataInputStream(inputStream));
CParser parser = new CParser(scanner);
parser.setTrace(CLI.debug);
parser.program();
if (parser.getError()) {
System.out.println("ERROR");
System.exit(-1);
}
IrProgram cfg = (IrProgram) IrGenerator.getIr(parser.getAST());
SemanticChecker checker = new SemanticChecker();
checker.check(cfg);
SymbolTable table = checker.getSymbolTable();
OutputGenerator gen = new OutputGenerator();
gen.generate(cfg, table);
} else {
System.out.println("Unsupported target");
}
} catch (Exception e) {
// print the error:
System.out.println(CLI.infile + " " + e);
}
}
