import javax.imageio.*; import java.awt.image.*; import java.awt.event.*; import java.awt.*; import java.security.NoSuchAlgorithmException; import java.security.MessageDigest; import java.lang.reflect.*; import java.net.*; import java.io.*; import javax.swing.text.*; import javax.swing.*; import java.util.concurrent.*; import java.util.regex.*; import java.util.List; import java.util.zip.*; import java.util.*; public class main { // in static String query = "Java class declarations"; // intermediate static String url, json; // out static Object data; static List results = new ArrayList(); static class GoogleResult { String url, cacheurl, title; } public static void main(String[] args) throws Exception { url = "http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=" + urlencode(query); json = loadPage(url); //print(json); //print(); data = jsonDecode(json); //print(structure(data)); Object responseData = ((Map) data).get("responseData"); //print(structure(responseData)); List _results = (List) ( ((Map) responseData).get("results")); //print(structure(_results)); for (int i = 0; i < _results.size(); i++) { Map row = _results.get(i); //print(structure(row)); GoogleResult r = new GoogleResult(); r.url = (String) row.get("unescapedUrl"); r.cacheurl = (String) row.get("cacheUrl"); r.title = (String) row.get("titleNoFormatting"); print(structure(r)); results.add(r); } } static void print() { System.out.println(); } static void print(Object o) { System.out.println(o); } static void print(long i) { System.out.println(i); } public static String loadPage(String url) throws IOException { if (url.indexOf("://") < 0) url = "http://" + url; return loadPage(new URL(url)); } public static String loadPage(URL url) throws IOException { System.out.println("Loading: " + url.toExternalForm()); URLConnection con = url.openConnection(); return loadPage(con, url); } public static String loadPage(URLConnection con, URL url) throws IOException { String contentType = con.getContentType(); if (contentType == null) throw new IOException("Page could not be read: " + url); //Log.info("Content-Type: " + contentType); String charset = loadPage_guessCharset(contentType); Reader r = new InputStreamReader(con.getInputStream(), charset); StringBuilder buf = new StringBuilder(); while (true) { int ch = r.read(); if (ch < 0) break; //Log.info("Chars read: " + buf.length()); buf.append((char) ch); } return buf.toString(); } static String loadPage_guessCharset(String contentType) { Pattern p = Pattern.compile("text/html;\\s+charset=([^\\s]+)\\s*"); Matcher m = p.matcher(contentType); /* If Content-Type doesn't match this pre-conception, choose default and hope for the best. */ return m.matches() ? m.group(1) : "ISO-8859-1"; } static String urlencode(String x) { try { return URLEncoder.encode(unnull(x), "UTF-8"); } catch (UnsupportedEncodingException e) { throw new RuntimeException(e); } } static Object jsonDecode(String text) { final List tok = jsonTok(text); class X { int i = 1; Object parse() { String t = tok.get(i); if (t.startsWith("\"")) { String s = unquote(tok.get(i)); i += 2; return s; } if (t.equals("{")) return parseMap(); if (t.equals("[")) return parseList(); if (t.equals("null")) { i += 2; return null; } if (t.equals("false")) { i += 2; return false; } if (t.equals("true")) { i += 2; return true; } if (isInteger(t)) { i += 2; return Integer.parseInt(t); } throw new RuntimeException("Unknown token " + (i+1) + ": " + t); } Object parseList() { consume("["); List list = new ArrayList(); while (!tok.get(i).equals("]")) { list.add(parse()); if (tok.get(i).equals(",")) i += 2; } consume("]"); return list; } Object parseMap() { consume("{"); Map map = new TreeMap(); while (!tok.get(i).equals("}")) { String key = unquote(tok.get(i)); i += 2; consume(":"); Object value = parse(); map.put(key, value); if (tok.get(i).equals(",")) i += 2; } consume("}"); return map; } void consume(String s) { if (!tok.get(i).equals(s)) { String prevToken = i-2 >= 0 ? tok.get(i-2) : ""; String nextTokens = join(tok.subList(i, Math.min(i+4, tok.size()))); fail(quote(s) + " expected: " + prevToken + " " + nextTokens + " (" + i + "/" + tok.size() + ")"); } i += 2; } } return new X().parse(); } static String structure(Object o) { return structure(o, 0); } static String structure(Object o, int stringSizeLimit) { if (o == null) return "null"; String name = o.getClass().getName(); StringBuilder buf = new StringBuilder(); if (o instanceof Collection) { for (Object x : (Collection) o) { if (buf.length() != 0) buf.append(", "); buf.append(structure(x, stringSizeLimit)); } return "{" + buf + "}"; } if (o instanceof Map) { for (Object e : ((Map) o).entrySet()) { if (buf.length() != 0) buf.append(", "); buf.append(structure(((Map.Entry) e).getKey(), stringSizeLimit)); buf.append("="); buf.append(structure(((Map.Entry) e).getValue(), stringSizeLimit)); } return "{" + buf + "}"; } if (o.getClass().isArray()) { int n = Array.getLength(o); for (int i = 0; i < n; i++) { if (buf.length() != 0) buf.append(", "); buf.append(structure(Array.get(o, i), stringSizeLimit)); } return "{" + buf + "}"; } if (o instanceof String) return quote(stringSizeLimit != 0 ? shorten((String) o, stringSizeLimit) : (String) o); // Need more cases? This should cover all library classes... if (name.startsWith("java.") || name.startsWith("javax.")) return String.valueOf(o); String shortName = o.getClass().getName().replaceAll("^main\\$", ""); // TODO: go to superclasses too Field[] fields = o.getClass().getDeclaredFields(); int numFields = 0; String fieldName = ""; for (Field field : fields) { if ((field.getModifiers() & Modifier.STATIC) != 0) continue; Object value; try { value = field.get(o); } catch (Exception e) { value = "?"; } fieldName = field.getName(); // put special cases here... if (value != null) { if (buf.length() != 0) buf.append(", "); buf.append(fieldName + "=" + structure(value, stringSizeLimit)); } ++numFields; } String b = buf.toString(); if (numFields == 1) b = b.replaceAll("^" + fieldName + "=", ""); // drop field name if only one String s = shortName; if (buf.length() != 0) s += "(" + b + ")"; return s; } public static String quote(String s) { if (s == null) return "null"; return "\"" + s.replace("\\", "\\\\").replace("\"", "\\\"").replace("\r", "\\r").replace("\n", "\\n") + "\""; } public static String unquote(String s) { if (s.startsWith("[")) { int i = 1; while (i < s.length() && s.charAt(i) == '=') ++i; if (i < s.length() && s.charAt(i) == '[') { String m = s.substring(1, i); if (s.endsWith("]" + m + "]")) return s.substring(i+1, s.length()-i-1); } } if (s.startsWith("\"") && s.endsWith("\"") && s.length() > 1) { String st = s.substring(1, s.length()-1); StringBuilder sb = new StringBuilder(st.length()); for (int i = 0; i < st.length(); i++) { char ch = st.charAt(i); if (ch == '\\') { char nextChar = (i == st.length() - 1) ? '\\' : st .charAt(i + 1); // Octal escape? if (nextChar >= '0' && nextChar <= '7') { String code = "" + nextChar; i++; if ((i < st.length() - 1) && st.charAt(i + 1) >= '0' && st.charAt(i + 1) <= '7') { code += st.charAt(i + 1); i++; if ((i < st.length() - 1) && st.charAt(i + 1) >= '0' && st.charAt(i + 1) <= '7') { code += st.charAt(i + 1); i++; } } sb.append((char) Integer.parseInt(code, 8)); continue; } switch (nextChar) { case '\\': ch = '\\'; break; case 'b': ch = '\b'; break; case 'f': ch = '\f'; break; case 'n': ch = '\n'; break; case 'r': ch = '\r'; break; case 't': ch = '\t'; break; case '\"': ch = '\"'; break; case '\'': ch = '\''; break; // Hex Unicode: u???? case 'u': if (i >= st.length() - 5) { ch = 'u'; break; } int code = Integer.parseInt( "" + st.charAt(i + 2) + st.charAt(i + 3) + st.charAt(i + 4) + st.charAt(i + 5), 16); sb.append(Character.toChars(code)); i += 5; continue; } i++; } sb.append(ch); } return sb.toString(); } else return s; // return original } public static String join(String glue, Iterable strings) { StringBuilder buf = new StringBuilder(); Iterator i = strings.iterator(); if (i.hasNext()) { buf.append(i.next()); while (i.hasNext()) buf.append(glue).append(i.next()); } return buf.toString(); } public static String join(String glue, String[] strings) { return join(glue, Arrays.asList(strings)); } public static String join(Iterable strings) { return join("", strings); } public static String join(String[] strings) { return join("", strings); } static String unnull(String s) { return s == null ? "" : s; } static RuntimeException fail() { throw new RuntimeException("fail"); } static RuntimeException fail(String msg) { throw new RuntimeException(msg); } static boolean isInteger(String s) { return Pattern.matches("\\-?\\d+", s); } static List jsonTok(String s) { List tok = new ArrayList(); int l = s.length(); int i = 0; while (i < l) { int j = i; char c; String cc; // scan for whitespace while (j < l) { c = s.charAt(j); cc = s.substring(j, Math.min(j+2, l)); if (c == ' ' || c == '\t' || c == '\r' || c == '\n') ++j; else if (cc.equals("/*")) { do ++j; while (j < l && !s.substring(j, Math.min(j+2, l)).equals("*/")); j = Math.min(j+2, l); } else if (cc.equals("//")) { do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0); } else break; } tok.add(s.substring(i, j)); i = j; if (i >= l) break; c = s.charAt(i); // cc is not needed in rest of loop body // scan for non-whitespace (json strings, "null" identifier, numbers. everything else automatically becomes a one character token.) if (c == '\'' || c == '"') { char opener = c; ++j; while (j < l) { if (s.charAt(j) == opener) { ++j; break; } else if (s.charAt(j) == '\\' && j+1 < l) j += 2; else ++j; } } else if (Character.isLetter(c)) do ++j; while (j < l && Character.isLetter(s.charAt(j))); else if (Character.isDigit(c)) do ++j; while (j < l && Character.isDigit(s.charAt(j))); else ++j; tok.add(s.substring(i, j)); i = j; } if ((tok.size() % 2) == 0) tok.add(""); return tok; } static String shorten(String s, int max) { return s.length() <= max ? s : s.substring(0, Math.min(s.length(), max)) + "..."; } }