import java.util.*;
import java.util.zip.*;
import java.util.List;
import java.util.regex.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import java.lang.ref.*;
import java.lang.management.*;
import java.security.*;
import java.security.spec.*;
import java.math.*;

import android.widget.*;
import android.view.*;
import android.view.View;
import android.content.Context;
import android.app.Activity;
import android.view.inputmethod.*;
import android.content.*;
import android.text.*;

public class main {} // dummy

class x30 implements Runnable {
  static final String version = "JavaX 30";
  static final int subversion = 1;
  static final String javaxProgramID = "#1001638";
  
  static Class bootUpClass;
  
  static ThreadLocal onProgramLoad = new ThreadLocal();
  
  // If programs run longer than this, they might have their class files
  // deleted. One day for now.
  static int tempFileRetentionTime = 1*24; // hours
  
  static int maxConsoleChars = 1024*1024;
  
  static boolean verbose = false, translate = false, list = false, virtualizeTranslators = true;
  static String translateTo = null;
  static boolean preferCached = false, noID = false, noPrefetch = false, noAWT = false;
  static boolean safeOnly = false, safeTranslate = false, javacOnly = false, logOn = true;
  static boolean runMainInProcess = true, consoleOn = true, hasHelloMessage = false;
  static List<String[]> mainTranslators = new ArrayList<String[]>();
  private static Map<Long, String> memSnippetCache = new HashMap<Long, String>();
  private static int processesStarted, compilations;

  // snippet ID -> md5
  private static HashMap<Long, String> prefetched = new HashMap<Long, String>();
  private static File virtCache;
  
  // doesn't work yet
  private static Map<String, Class<?>> programCache = new HashMap<String, Class<?>>();
  static boolean cacheTranslators = false;

  // this should work (caches transpiled translators)
  private static HashMap<Long, Object[]> translationCache = new HashMap<Long, Object[]>();
  static boolean cacheTranspiledTranslators = true;

  // which snippets are available pre-transpiled server-side?
  private static Set<Long> hasTranspiledSet = new HashSet<Long>();
  static boolean useServerTranspiled = true;

  static Object androidContext;
  static boolean android = isAndroid();
  
  // We stick to 1.7 for now to support android.
  // Scripts like #1001155 might change to 1.6
  static String javaTarget = System.getProperty("java.version").startsWith("1.6.") ? "1.6" : "1.7";

  // Translators currently being translated (to detect recursions)
  private static Set<Long> translating = new HashSet<Long>();

  static String lastOutput;
  static String[] fullArgs;
  private static Console console;
  
  static String javaCompilerOutput;
  
  static int systemOutPipeSize = 128*1024; // 128 K
  static int systemErrPipeSize = 4*1024; // 4 K
  static int systemInPipeSize = 4*1024; // 4 K
  
  // store anything here
  static Map generalMap = synchroHashMap();

  public static void main(String[] args) {
    try {
      goMain(args);
    } catch (Throwable e) {
      e.printStackTrace();
    }
  }
  
  static void goMain(String[] args) throws Exception {
    __javax = x30.class; // for hotwire
    
    if (args.length != 0 && args[0].equals("-v")) verbose = true;

    for (String arg : args)
      if (arg.equals("-noawt"))
        noAWT = true;
        
    if (!hasHelloMessage) {
      hasHelloMessage = true;
      //installHelloMessage(args.length == 0 ? "JavaX Start-Up VM" : "JavaX VM (" + smartJoin(args) + ")");
      makeVMAndroid();
    }
    
    File ioBaseDir = new File("."), inputDir = null, outputDir = null;
    String src = null;
    List<String> programArgs = new ArrayList<String>();
    fullArgs = args;

    for (int i = 0; i < args.length; i++) {
      String arg = args[i];

      if (arg.equals("-version")) {
        showVersion();
        System.exit(0);
      }

      if (arg.equals("-sysprop")) {
        showSystemProperties();
        return;
      }

      if (arg.equals("-v") || arg.equals("-verbose"))
        verbose = true;
      else if (arg.equals("-finderror"))
        verbose = true;
      else if (arg.equals("-offline") || arg.equalsIgnoreCase("-prefercached"))
        preferCached = true;
      else if (arg.equals("-novirt"))
        virtualizeTranslators = false;
      else if (arg.equals("-safeonly"))
        safeOnly = true;
      else if (arg.equals("-safetranslate"))
        safeTranslate = true;
      else if (arg.equals("-noawt"))
        noAWT = true;
      else if (arg.equals("-noid"))
        noID = true;
      else if (arg.equals("-nocachetranspiled"))
        cacheTranspiledTranslators = false;
      else if (arg.equals("-javac"))
        javacOnly = true;
      else if (arg.equals("-localtranspile"))
        useServerTranspiled = false;
      else if (arg.equals("translate") && src == null)
        translate = true;
      else if (arg.equals("list") && src == null) {
        list = true;
        virtualizeTranslators = false; // so they are silenced
      } else if (arg.equals("run") && src == null) {
        // it's the default command anyway
      } else if (arg.startsWith("input="))
        inputDir = new File(arg.substring(6));
      else if (arg.startsWith("output="))
        outputDir = new File(arg.substring(7));
      else if (arg.equals("with"))
        mainTranslators.add(new String[] {args[++i], null});
      else if (translate && arg.equals("to"))
        translateTo = args[++i];
      else if (src == null) {
        //System.out.println("src=" + arg);
        src = arg;
      } else
        programArgs.add(arg);
    }

    cleanCache();

    if (useServerTranspiled)
      noPrefetch = true;

    if (src == null) src = ".";

    // Might actually want to write to 2 disk caches (global/per program).
    if (virtualizeTranslators && !preferCached)
      virtCache = TempDirMaker_make();

    if (inputDir != null) {
      ioBaseDir = TempDirMaker_make();
      System.out.println("Taking input from: " + inputDir.getAbsolutePath());
      System.out.println("Output is in: " + new File(ioBaseDir, "output").getAbsolutePath());
      copyInput(inputDir, new File(ioBaseDir, "input"));
    }
    
    if (logOn)
      logStart(args);

    javaxmain(src, ioBaseDir, translate, list, programArgs.toArray(new String[programArgs.size()]));

    if (outputDir != null) {
      copyInput(new File(ioBaseDir, "output"), outputDir);
      System.out.println("Output copied to: " + outputDir.getAbsolutePath());
    }

    if (verbose) {
      // print stats
      System.out.println("Processes started: " + processesStarted + ", compilations: " + compilations);
    }
  }

static void saveTranspiledCode(String progID, String code) {
  saveTextFile(new File(getCodeProgramDir(progID), "Transpilation"), code);
}

static File getCodeProgramDir() {
  return getCodeProgramDir(getProgramID());
}

static File getCodeProgramDir(String snippetID) {
  return new File(userHome(), "JavaX-Code/" + formatSnippetID(snippetID));
}

static File getCodeProgramDir(long snippetID) {
  return getCodeProgramDir(formatSnippetID(snippetID));
}

public static void javaxmain(String src, File ioDir, boolean translate, boolean list,
                               String[] args) throws Exception {
    String programID = isSnippetID(src) ? "" + parseSnippetID(src) : null;
    
    if (programID != null)
      System.err.println("JavaX TRANSLATE " + programID + " " + smartJoin(args));
    
    List<File> libraries = new ArrayList<File>();
    File X = transpileMain(src, libraries);
    if (verbose)
      print("After transpileMain: " + X);
      
    if (X == null) {
      showVersion();
      
      if (fullArgs != null) {
        String[] nargs;
        if (fullArgs.length == 0)
          nargs = new String[] {"1000825"}; // swing-start
        else {
          // forward to search
          nargs = new String[fullArgs.length+1];
          nargs[0] = "636";
          // nargs[1] = "search-runnables";
          System.arraycopy(fullArgs, 0, nargs, 1, fullArgs.length);
        }
        main(nargs); // Hopefully we get no infinite recursion :)
        return;
      }
      
      System.out.println("No main.java found, exiting");
      return;
    }
    
    info.transpiledSrc = X;

    // list or run

    if (translate) {
      File to = X;
      if (translateTo != null) {
        StringBuilder buf = new StringBuilder();
        for (File f : libraries) buf.append(f.getName()+"\n");
        if (new File(translateTo).isDirectory()) {
          to = new File(translateTo, "main.java");
          saveTextFile(new File(translateTo, "libraries.txt").getPath(), buf.toString());
        } else {
          to = new File(translateTo);
          saveTextFile(new File(translateTo + "_libraries").getPath(), buf.toString());
        }
      }
      if (to != X)
        copy(new File(X, "main.java"), to);
      System.out.println("Program translated to: " + to.getAbsolutePath());
    } else if (list)
      System.out.println(loadTextFile(new File(X, "main.java").getPath(), null));
    else {
      if (programID != null)
        System.err.println("JavaX RUN " + programID + " " + smartJoin(args));
      System.err.println(); // Make empty line before actual program starts
      
      Class mainClass = javax2(X, ioDir, false, runMainInProcess, libraries, args, null, programID, info);
      
      if (!isTrue(getOpt(mainClass, "mainDoneQuietly_on")))
        System.out.println("[main done]");
    }
  }

static File transpileMain(String src, List<File> libraries) throws Exception {
    File srcDir = null;
    boolean isTranspiled = false;
    if (isSnippetID(src)) {
      String transpiledSrc = getTranspilationFromBossBot(parseSnippetID(src));
      if (transpiledSrc != null) {
        int i = transpiledSrc.indexOf('\n');
        String libs = transpiledSrc.substring(0, Math.max(0, i));
        transpiledSrc = transpiledSrc.substring(i+1);
        if (!transpiledSrc.isEmpty()) {
          srcDir = TempDirMaker_make();
          saveTextFile(new File(srcDir, "main.java").getPath(), transpiledSrc);
          isTranspiled = true;

          Matcher m = Pattern.compile("\\d+").matcher(libs);
          while (m.find()) {
            String libid = m.group();
            File libraryFile = DiskSnippetCache_getLibrary(parseSnippetID(libid));
            loadLibrary(libid, libraries, libraryFile);
          }
        }
      }
     
      if (srcDir == null) {
        prefetch(src);
        long id = parseSnippetID(src);
        prefetched.remove(id); // hackfix to ensure transpiled main program is found.
        srcDir = loadSnippetAsMainJava(src);
        if (verbose)
          System.err.println("hasTranspiledSet: " + hasTranspiledSet);
        if (hasTranspiledSet.contains(id) && useServerTranspiled) {
          //System.err.println("Trying pretranspiled main program: #" + id);
          transpiledSrc = getServerTranspiled2("#" + id);
          int i = transpiledSrc.indexOf('\n');
          String libs = transpiledSrc.substring(0, Math.max(0, i));
          transpiledSrc = transpiledSrc.substring(i+1);
          if (!transpiledSrc.isEmpty()) {
            srcDir = TempDirMaker_make();
            saveTextFile(new File(srcDir, "main.java").getPath(), transpiledSrc);
            isTranspiled = true;
            //translationCache.put(id, new Object[] {srcDir, libraries});
  
            Matcher m = Pattern.compile("\\d+").matcher(libs);
            while (m.find()) {
              String libid = m.group();
              File libraryFile = DiskSnippetCache_getLibrary(parseSnippetID(libid));
              loadLibrary(libid, libraries, libraryFile);
            }
          }
        }
      }
    } else {
      srcDir = new File(src);

      // if the argument is a file, it is assumed to be main.java
      if (srcDir.isFile()) {
        srcDir = TempDirMaker_make();
        copy(new File(src), new File(srcDir, "main.java"));
      }

      if (!new File(srcDir, "main.java").exists())
        return null;
    }

    // translate

    File X = srcDir;

    if (!isTranspiled) {
      X = topLevelTranslate(X, libraries);
      System.err.println("Translated " + src);

      // save prefetch data
      if (isSnippetID(src))
        savePrefetchData(src);
    }
    return X;
  }
  
 private static void prefetch(String mainSnippetID) throws IOException {
    if (noPrefetch) return;

    long mainID = parseSnippetID(mainSnippetID);
    String s = mainID + " " + loadTextFile(new File(userHome(), ".tinybrain/prefetch/" + mainID + ".txt").getPath(), "");
    String[] ids = s.trim().split(" ");
    if (ids.length > 1) {
      String url = tb_mainServer() + "/tb-int/prefetch.php?ids=" + URLEncoder.encode(s, "UTF-8") + standardCredentials();
      String data = loadPage(new URL(url));
      String[] split = data.split(" ");
      if (split.length == ids.length)
        for (int i = 0; i < ids.length; i++)
          prefetched.put(parseSnippetID(ids[i]), split[i]);
    }
  }
  
static String userHomeInternal() {
  return ((File) call(androidContext, "getFilesDir")).getAbsolutePath();
}

static String _userHome;
static String userHome() {
  if (_userHome == null) {
    if (isAndroid())
      _userHome = "/storage/emulated/0/";
    else
      _userHome = System.getProperty("user.home");
    //System.out.println("userHome: " + _userHome);
  }
  return _userHome;
}

  private static void savePrefetchData(String mainSnippetID) throws IOException {
    List<String> ids = new ArrayList<String>();
    long mainID = parseSnippetID(mainSnippetID);

    for (long id : memSnippetCache.keySet())
      if (id != mainID)
        ids.add(String.valueOf(id));

    saveTextFile(new File(userHome(),".tinybrain/prefetch/" + mainID + ".txt").getPath(), join(" ", ids));
  }

  static File topLevelTranslate(File srcDir, List<File> libraries_out) throws Exception {
    File X = srcDir;
    X = applyTranslators(X, mainTranslators, libraries_out); // translators supplied on command line (unusual)

    // actual inner translation of the JavaX source
    X = defaultTranslate(X, libraries_out);
    return X;
  }

  private static File defaultTranslate(File x, List<File> libraries_out) throws Exception {
    x = luaPrintToJavaPrint(x);
    x = repeatAutoTranslate(x, libraries_out);
    return x;
  }

  private static File repeatAutoTranslate(File x, List<File> libraries_out) throws Exception {
    List<String[]> postTranslators = new ArrayList<String[]>();
    
    while (true) {
      String main = loadTextFile(new File(x, "main.java").getPath(), null);
      List<String> lines = toLines(main);
      List<String[]> t = findPostTranslators(lines);
      postTranslators.addAll(t);
      
      if (!t.isEmpty()) {
        main = fromLines(lines);
        x = TempDirMaker_make();
        saveTextFile(new File(x, "main.java").getPath(), main);
      }

      File y = autoTranslate(x, libraries_out);
      if (y == x)
        break;
      x = y;
    }
    
    x = applyTranslators(x, postTranslators, libraries_out);
    
    return x;
  }

  private static File autoTranslate(File x, List<File> libraries_out) throws Exception {
    String main = loadTextFile(new File(x, "main.java").getPath(), null);
    List<String> lines = toLines(main);
    List<String[]> translators = findTranslators(lines);
    if (translators.isEmpty())
      return x;

    main = fromLines(lines);
    File newDir = TempDirMaker_make();
    saveTextFile(new File(newDir, "main.java").getPath(), main);
    return applyTranslators(newDir, translators, libraries_out);
  }

  static List<String[]> findTranslators(List<String> lines) {
    List<String[]> translators = new ArrayList<String[]>();
    Pattern pattern = Pattern.compile("^!([0-9# \t]+)");
    Pattern pArgs = Pattern.compile("^\\s*\\((.*)\\)");
    for (ListIterator<String> iterator = lines.listIterator(); iterator.hasNext(); ) {
      String line = iterator.next();
      line = line.trim();
      Matcher matcher = pattern.matcher(line);
      if (matcher.find()) {
        String[] t = matcher.group(1).split("[ \t]+");
        String rest = line.substring(matcher.end());
        String arg = null;
        if (t.length == 1) {
          Matcher mArgs = pArgs.matcher(rest);
          if (mArgs.find())
            arg = mArgs.group(1);
        }
        for (String transi : t)
          translators.add(new String[]{transi, arg});
        iterator.remove();
      }
    }
    return translators;
  }

  static List<String[]> findPostTranslators(List<String> lines) {
    List<String[]> translators = new ArrayList<String[]>();
    Pattern pattern = Pattern.compile("^!post\\s*([0-9# \t]+)");
    Pattern pArgs = Pattern.compile("^\\s*\\((.*)\\)");
    for (ListIterator<String> iterator = lines.listIterator(); iterator.hasNext(); ) {
      String line = iterator.next();
      line = line.trim();
      Matcher matcher = pattern.matcher(line);
      if (matcher.find()) {
        String[] t = matcher.group(1).split("[ \t]+");
        String rest = line.substring(matcher.end());
        String arg = null;
        if (t.length == 1) {
          Matcher mArgs = pArgs.matcher(rest);
          if (mArgs.find())
            arg = mArgs.group(1);
        }
        for (String transi : t)
          translators.add(new String[]{transi, arg});
        iterator.remove();
      }
    }
    return translators;
  }

  public static List<String> toLines(String s) {
    List<String> lines = new ArrayList<String>();
    int start = 0;
    while (true) {
      int i = toLines_nextLineBreak(s, start);
      if (i < 0) {
        if (s.length() > start) lines.add(s.substring(start));
        break;
      }

      lines.add(s.substring(start, i));
      if (s.charAt(i) == '\r' && i+1 < s.length() && s.charAt(i+1) == '\n')
        i += 2;
      else
        ++i;

      start = i;
    }
    return lines;
  }

  private static int toLines_nextLineBreak(String s, int start) {
    for (int i = start; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c == '\r' || c == '\n')
        return i;
    }
    return -1;
  }

  public static String fromLines(List<String> lines) {
    StringBuilder buf = new StringBuilder();
    for (String line : lines) {
      buf.append(line).append('\n');
    }
    return buf.toString();
  }

  private static File applyTranslators(File x, List<String[]> translators, List<File> libraries_out) throws Exception {
    for (String[] translator : translators)
      x = applyTranslator(x, translator[0], translator[1], libraries_out);
    return x;
  }

  // also takes a library
  private static File applyTranslator(File x, String translator, String arg, List<File> libraries_out) throws Exception {
    if (verbose)
      System.out.println("Using translator " + translator + " on sources in " + x.getPath());

    File newDir = runTranslatorOnInput(translator, null, arg, x, !verbose, libraries_out);

    if (!new File(newDir, "main.java").exists()) {
      throw new Exception("Translator " + translator + " did not generate main.java");
      // TODO: show translator output
    }
    if (verbose)
      System.out.println("Translated with " + translator + " from " + x.getPath() + " to " + newDir.getPath());
    x = newDir;
    return x;
  }

  private static File luaPrintToJavaPrint(File x) throws IOException {
    File newDir = TempDirMaker_make();
    String code = loadTextFile(new File(x, "main.java").getPath(), null);
    code = luaPrintToJavaPrint(code);
    saveTextFile(new File(newDir, "main.java").getPath(), code);
    return newDir;
  }

  public static String luaPrintToJavaPrint(String code) {
    return ("\n" + code).replaceAll(
      "(\n\\s*)print (\".*\")",
      "$1System.out.println($2);").substring(1);
  }

  public static File loadSnippetAsMainJava(String snippetID) throws IOException {
    checkProgramSafety(snippetID);
    File srcDir = TempDirMaker_make();
    saveTextFile(new File(srcDir, "main.java").getPath(), loadSnippet(snippetID));
    return srcDir;
  }

  public static File loadSnippetAsMainJavaVerified(String snippetID, String hash) throws IOException {
    checkProgramSafety(snippetID);
    File srcDir = TempDirMaker_make();
    saveTextFile(new File(srcDir, "main.java").getPath(), loadSnippetVerified(snippetID, hash));
    return srcDir;
  }

  @SuppressWarnings( "unchecked" )
  /** returns output dir */
  private static File runTranslatorOnInput(String snippetID, String hash, String arg, File input,
                                           boolean silent,
                                           List<File> libraries_out) throws Exception {
    if (safeTranslate)
      checkProgramSafetyImpl(snippetID);
    long id = parseSnippetID(snippetID);

    // It's a library, not a translator.
    File libraryFile = DiskSnippetCache_getLibrary(id);
    if (verbose)
      System.out.println("Library file for " + id + ": " + libraryFile);
    if (libraryFile != null) {
      loadLibrary(snippetID, libraries_out, libraryFile);
      return input;
    }

    String[] args = arg != null ? new String[]{arg} : new String[0];

    File srcDir = hash == null ? loadSnippetAsMainJava(snippetID)
      : loadSnippetAsMainJavaVerified(snippetID, hash);
    long mainJavaSize = new File(srcDir, "main.java").length();

    if (verbose)
      System.out.println(snippetID + ": length = " + mainJavaSize);
    if (mainJavaSize == 0) { // no text in snippet? assume it's a library
      loadLibrary(snippetID, libraries_out, libraryFile);
      return input;
    }

    List<File> libraries = new ArrayList<File>();
    Object[] cached = translationCache.get(id);
    if (cached != null) {
      //System.err.println("Taking translator " + snippetID + " from cache!");
      srcDir = (File) cached[0];
      libraries = (List<File>) cached[1];
    } else if (hasTranspiledSet.contains(id) && useServerTranspiled) {
      System.err.println("Trying pretranspiled translator: #" + snippetID);
      String transpiledSrc = getServerTranspiled(snippetID);
      transpiledSrc = transpiledSrc.substring(transpiledSrc.indexOf('\n')+1);
      // TODO: check for libraries
      if (!transpiledSrc.isEmpty()) {
        srcDir = TempDirMaker_make();
        saveTextFile(new File(srcDir, "main.java").getPath(), transpiledSrc);
        translationCache.put(id, cached = new Object[] {srcDir, libraries});
      }
    }

    File ioBaseDir = TempDirMaker_make();

    /*Class<?> mainClass = programCache.get("" + parseSnippetID(snippetID));
    if (mainClass != null)
      return runCached(ioBaseDir, input, args);*/
    // Doesn't work yet because virtualized directories are hardcoded in translator...

    if (cached == null) {
      System.err.println("Translating translator #" + id);
      if (translating.contains(id))
        throw new RuntimeException("Recursive translator reference chain: " + structure(translating));
      translating.add(id);
      try {
        srcDir = defaultTranslate(srcDir, libraries);
      } finally {
        translating.remove(id);
      }
      System.err.println("Translated translator #" + id);
      translationCache.put(id, new Object[]{srcDir, libraries});
    }

    boolean runInProcess = false;

    if (virtualizeTranslators) {
      if (verbose) System.out.println("Virtualizing translator");

      // TODO: don't virtualize class _javax (as included in, say, #636)

      //srcDir = applyTranslator(srcDir, "#2000351"); // I/O-virtualize the translator
      // that doesn't work because it recurses infinitely...

      // So we do it right here:
      String s = loadTextFile(new File(srcDir, "main.java").getPath(), null);
      s = s.replaceAll("new\\s+File\\(", "virtual.newFile(");
      s = s.replaceAll("new\\s+FileInputStream\\(", "virtual.newFileInputStream(");
      s = s.replaceAll("new\\s+FileOutputStream\\(", "virtual.newFileOutputStream(");
      s += "\n\n" + loadSnippet("#2000355"); // load class virtual

      // forward snippet cache (virtualized one)
      File dir = virtCache != null ? virtCache : DiskSnippetCache_dir;
      s = s.replace("static File DiskSnippetCache_dir" + ";",
        "static File DiskSnippetCache_dir " + "= new File(" + javaQuote(dir.getAbsolutePath()) + ");"); // extra + is necessary for Dumb TinyBrain :)
      s = s.replace("static boolean preferCached = false;", "static boolean preferCached = true;");

      if (verbose) {
        System.out.println("==BEGIN VIRTUALIZED TRANSLATOR==");
        System.out.println(s);
        System.out.println("==END VIRTUALIZED TRANSLATOR==");
      }
      srcDir = TempDirMaker_make();
      saveTextFile(new File(srcDir, "main.java").getPath(), s);

      // TODO: silence translator also
      runInProcess = true;
    }

    return runJavaX(ioBaseDir, srcDir, input, silent, runInProcess, libraries,
      args, cacheTranslators ? "" + id : null, "" + id);
  }

  static void checkProgramSafety(String snippetID) throws IOException {
    if (!safeOnly) return;
    checkProgramSafetyImpl(snippetID);
  }

static void checkProgramSafetyImpl(String snippetID) throws IOException {
    URL url = new URL(tb_mainServer() + "/tb-int/is-javax-safe.php?id=" + parseSnippetID(snippetID) + standardCredentials());
    String text = loadPage(url);
    if (!text.startsWith("{\"safe\":\"1\"}"))
      throw new RuntimeException("Program not safe: #" + parseSnippetID(snippetID));
  }

  static void loadLibrary(String snippetID, List<File> libraries_out, File libraryFile) throws IOException {
    if (verbose)
      System.out.println("Assuming " + snippetID + " is a library.");

    if (libraryFile == null) {
      byte[] data = loadDataSnippetImpl(snippetID);
      DiskSnippetCache_putLibrary(parseSnippetID(snippetID), data);
      libraryFile = DiskSnippetCache_getLibrary(parseSnippetID(snippetID));
    }

    if (!libraries_out.contains(libraryFile))
      libraries_out.add(libraryFile);
  }

  /** returns output dir */
  private static File runJavaX(File ioBaseDir, File originalSrcDir, File originalInput,
                               boolean silent, boolean runInProcess,
                               List<File> libraries, String[] args, String cacheAs,
                               String programID) throws Exception {
    File srcDir = new File(ioBaseDir, "src");
    File inputDir = new File(ioBaseDir, "input");
    File outputDir = new File(ioBaseDir, "output");
    copyInput(originalSrcDir, srcDir);
    copyInput(originalInput, inputDir);
    javax2(srcDir, ioBaseDir, silent, runInProcess, libraries, args, cacheAs, programID, null);
    return outputDir;
  }

  private static void copyInput(File src, File dst) throws IOException {
    copyDirectory(src, dst);
  }

  public static boolean hasFile(File inputDir, String name) {
    return new File(inputDir, name).exists();
  }

  public static void copyDirectory(File src, File dst) throws IOException {
    if (verbose) System.out.println("Copying " + src.getAbsolutePath() + " to " + dst.getAbsolutePath());
    dst.mkdirs();
    File[] files = src.listFiles();
    if (files == null) return;
    for (File file : files) {
      File dst1 = new File(dst, file.getName());
      if (file.isDirectory())
        copyDirectory(file, dst1);
      else {
        if (verbose) System.out.println("Copying " + file.getAbsolutePath() + " to " + dst1.getAbsolutePath());
        copy(file, dst1);
      }
    }
  }

  /** Quickly copy a file without a progress bar or any other fancy GUI... :) */
  public static void copy(File src, File dest) throws IOException {
    FileInputStream inputStream = newFileInputStream(src);
    FileOutputStream outputStream = newFileOutputStream(dest);
    try {
      copy(inputStream, outputStream);
      inputStream.close();
    } finally {
      outputStream.close();
    }
  }

  private static FileInputStream newFileInputStream(File f) throws FileNotFoundException {
    /*if (androidContext != null)
      return (FileInputStream) call(androidContext,
        "openFileInput", f.getPath());
    else*/
    return new // line break for Dumb TinyBrain :)
    FileInputStream(f);
  }

  private static FileOutputStream newFileOutputStream(File f) throws FileNotFoundException {
    /*if (androidContext != null)
      return (FileOutputStream) call(androidContext,
        "openFileOutput", f.getPath(), 0);
    else*/
    return new // line break for Dumb TinyBrain :)
    FileOutputStream(f);
  }

  public static void copy(InputStream in, OutputStream out) throws IOException {
    byte[] buf = new byte[65536];
    while (true) {
      int n = in.read(buf);
      if (n <= 0) return;
      out.write(buf, 0, n);
    }
  }

  /** writes safely (to temp file, then rename) */
  public static void saveBinaryFile(String fileName, byte[] contents) throws IOException {
    File file = new File(fileName);
    File parentFile = file.getParentFile();
    if (parentFile != null)
      parentFile.mkdirs();
    String tempFileName = fileName + "_temp";
    FileOutputStream fileOutputStream = newFileOutputStream(new File(tempFileName));
    fileOutputStream.write(contents);
    fileOutputStream.close();
    if (file.exists() && !file.delete())
      throw new IOException("Can't delete " + fileName);

    if (!new File(tempFileName).renameTo(file))
      throw new IOException("Can't rename " + tempFileName + " to " + fileName);
  }
  public static String loadTextFile(String fileName) {
    try {
      return loadTextFile(fileName, null);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }
  
  public static String loadTextFile(String fileName, String defaultContents) throws IOException {
    if (!new File(fileName).exists())
      return defaultContents;

    FileInputStream fileInputStream = new FileInputStream(fileName);
    InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");
    return loadTextFile(inputStreamReader);
  }
  
  public static String loadTextFile(File fileName) {
    try {
      return loadTextFile(fileName, null);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }

  public static String loadTextFile(File fileName, String defaultContents) throws IOException {
    try {
      return loadTextFile(fileName.getPath(), defaultContents);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }
  
  public static String loadTextFile(Reader reader) throws IOException {
    StringBuilder builder = new StringBuilder();
    try {
      char[] buffer = new char[1024];
      int n;
      while (-1 != (n = reader.read(buffer)))
        builder.append(buffer, 0, n);
        
    } finally {
      reader.close();
    }
    return builder.toString();
  } // loadTextFile
  
  static File DiskSnippetCache_dir;

  public static void initDiskSnippetCache(File dir) {
    DiskSnippetCache_dir = dir;
    dir.mkdirs();
  }

  // Data files are immutable, use centralized cache
  public static synchronized File DiskSnippetCache_getLibrary(long snippetID) throws IOException {
    File file = new File(getGlobalCache(), "data_" + snippetID + ".jar");
    if (verbose)
      System.out.println("Checking data cache: " + file.getPath());
    return file.exists() ? file : null;
  }

  public static synchronized String DiskSnippetCache_get(long snippetID) throws IOException {
    return loadTextFile(DiskSnippetCache_getFile(snippetID).getPath(), null);
  }

  private static File DiskSnippetCache_getFile(long snippetID) {
    return new File(DiskSnippetCache_dir, "" + snippetID);
  }

  public static synchronized void DiskSnippetCache_put(long snippetID, String snippet) throws IOException {
    saveTextFile(DiskSnippetCache_getFile(snippetID).getPath(), snippet);
  }

  public static synchronized void DiskSnippetCache_putLibrary(long snippetID, byte[] data) throws IOException {
    saveBinaryFile(new File(getGlobalCache(), "data_" + snippetID).getPath() + ".jar", data);
  }

  public static File DiskSnippetCache_getDir() {
    return DiskSnippetCache_dir;
  }

  public static void initSnippetCache() {
    if (DiskSnippetCache_dir == null)
      initDiskSnippetCache(getGlobalCache());
  }

  private static File getGlobalCache() {
    File file = new File(userHome(), ".tinybrain/snippet-cache");
    file.mkdirs();
    return file;
  }

  public static String loadSnippetVerified(String snippetID, String hash) throws IOException {
    String text = loadSnippet(snippetID);
    String realHash = getHash(text.getBytes("UTF-8"));
    if (!realHash.equals(hash)) {
      String msg;
      if (hash.isEmpty())
        msg = "Here's your hash for " + snippetID + ", please put in your program: " + realHash;
      else
        msg = "Hash mismatch for " + snippetID + ": " + realHash + " (new) vs " + hash + " - has tinybrain.de been hacked??";
      throw new RuntimeException(msg);
    }
    return text;
  }

  public static String getHash(byte[] data) {
    return bytesToHex(getFullFingerprint(data));
  }

  public static byte[] getFullFingerprint(byte[] data) {
    try {
      return MessageDigest.getInstance("MD5").digest(data);
    } catch (NoSuchAlgorithmException e) {
      throw new RuntimeException(e);
    }
  }

  public static String bytesToHex(byte[] bytes) {
    return bytesToHex(bytes, 0, bytes.length);
  }

  public static String bytesToHex(byte[] bytes, int ofs, int len) {
    StringBuilder stringBuilder = new StringBuilder(len*2);
    for (int i = 0; i < len; i++) {
      String s = "0" + Integer.toHexString(bytes[ofs+i]);
      stringBuilder.append(s.substring(s.length()-2, s.length()));
    }
    return stringBuilder.toString();
  }

  public static String loadSnippet(String snippetID) throws IOException {
    return loadSnippet(parseSnippetID(snippetID));
  }

  public static long parseSnippetID(String snippetID) {
    return Long.parseLong(shortenSnippetID(snippetID));
  }

  private static String shortenSnippetID(String snippetID) {
    if (snippetID.startsWith("#"))
      snippetID = snippetID.substring(1);
    String httpBlaBla = "http://tinybrain.de/";
    if (snippetID.startsWith(httpBlaBla))
      snippetID = snippetID.substring(httpBlaBla.length());
    return snippetID;
  }

  public static boolean isSnippetID(String snippetID) {
    snippetID = shortenSnippetID(snippetID);
    return isInteger(snippetID) && Long.parseLong(snippetID) != 0;
  }

  public static boolean isInteger(String s) {
    return Pattern.matches("\\-?\\d+", s);
  }
  
  static String getTranspilationFromBossBot(long snippetID) {
    return boss(format3("get transpilation for *", snippetID));
  }
  
  public static String loadSnippet(long snippetID) throws IOException {
    String text = getSnippetFromBossBot(snippetID);
    if (text != null) return text;
    
    text = memSnippetCache.get(snippetID);
    if (text != null) {
      if (verbose)
        System.out.println("Getting " + snippetID + " from mem cache");
      return text;
    }
    
    initSnippetCache();
    text = DiskSnippetCache_get(snippetID);
    if (preferCached && text != null) {
      if (verbose)
        System.out.println("Getting " + snippetID + " from disk cache (preferCached)");
      return text;
    }

    String md5 = text != null ? md5(text) : "-";
    if (text != null) {
      String hash = prefetched.get(snippetID);
      if (hash != null) {
        if (md5.equals(hash)) {
          memSnippetCache.put(snippetID, text);
          if (verbose)
            System.out.println("Getting " + snippetID + " from prefetched");
          return text;
        } else
          prefetched.remove(snippetID); // (maybe this is not necessary)
      }
    }

    try {
      /*URL url = new URL(tb_mainServer() + "/getraw.php?id=" + snippetID + standardCredentials());
      text = loadPage(url);*/
      String theURL = tb_mainServer() + "/getraw.php?id=" + snippetID + "&getmd5=1&utf8=1&usetranspiled=1" + standardCredentials();
      if (text != null) {
        //System.err.println("MD5: " + md5);
        theURL += "&md5=" + md5;
      }
      URL url = new URL(theURL);
      String page = loadPage(url);

      // parse & drop transpilation flag available line
      int i = page.indexOf('\n');
      boolean hasTranspiled = page.substring(0, i).trim().equals("1");
      if (hasTranspiled)
        hasTranspiledSet.add(snippetID);
      else
        hasTranspiledSet.remove(snippetID);
      page = page.substring(i+1);

      if (page.startsWith("==*#*==")) {
        // same, keep text
        //System.err.println("Snippet unchanged, keeping.");
      } else {
        // drop md5 line
        i = page.indexOf('\n');
        String hash = page.substring(0, i).trim();
        text = page.substring(i+1);

        String myHash = md5(text);
        if (myHash.equals(hash)) {
          //System.err.println("Hash match: " + hash);
        } else
          System.err.println("Hash mismatch");
      }
    } catch (Exception e) {
      e.printStackTrace();
      throw new IOException("Snippet #" + snippetID + " not found or not public / " + e);
    }

    memSnippetCache.put(snippetID, text);

    try {
      initSnippetCache();
      DiskSnippetCache_put(snippetID, text);
    } catch (IOException e) {
      System.err.println("Minor warning: Couldn't save snippet to cache ("  + DiskSnippetCache_getDir() + ")");
    }

    return text;
  }

  private static String md5(String text) {
    try {
      return bytesToHex(md5impl(text.getBytes("UTF-8"))); // maybe different than the way PHP does it...
    } catch (UnsupportedEncodingException e) {
      throw new RuntimeException(e);
    }
  }

  public static byte[] md5impl(byte[] data) {
    try {
      return MessageDigest.getInstance("MD5").digest(data);
    } catch (NoSuchAlgorithmException e) {
      throw new RuntimeException(e);
    }
  }

  public static byte[] loadBinaryPage(URLConnection con) throws IOException {
    setHeaders(con);
    return loadBinaryPage_noHeaders(con);
  }

  private static byte[] loadBinaryPage_noHeaders(URLConnection con) throws IOException {
    ByteArrayOutputStream buf = new ByteArrayOutputStream();
    InputStream inputStream = con.getInputStream();
    int n = 0;
    while (true) {
      int ch = inputStream.read();
      if (ch < 0)
        break;
      buf.write(ch);
      if (++n % 100000 == 0)
        System.err.println("  " + n + " bytes loaded.");
    }
    inputStream.close();
    return buf.toByteArray();
  }

  private static void setHeaders(URLConnection con) throws IOException {
    String computerID = getComputerID();
    if (computerID != null) try {
      con.setRequestProperty("X-ComputerID", computerID);
      con.setRequestProperty("X-OS", System.getProperty("os.name") + " " + System.getProperty("os.version"));
    } catch (Throwable e) {}
  }

  public static String 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";
  }

  /** runs a transpiled set of sources */
  public static Class javax2(File srcDir, File ioBaseDir, boolean silent, boolean runInProcess,
                            List<File> libraries, String[] args, String cacheAs,
                            String programID, Info info) throws Exception {
    return javax2android(srcDir, args, programID);
  }

  static Class<?> loadx2android(File srcDir, String programID) throws Exception {
    File dexDir = TempDirMaker_make();
    File dexFile = new File(dexDir, System.currentTimeMillis() + ".dex");
    byte[] dexData;
    
    if (isSnippetID(programID))
      dexData = loadBinaryPage(tb_mainServer() + "/dexcompile.php?id=" + parseSnippetID(programID) + standardCredentials());
    else {
      URL url = new URL(tb_mainServer() + "/dexcompile.php");
      URLConnection conn = url.openConnection();
      String postData = "src=" + URLEncoder.encode(loadTextFile(new File(srcDir, "main.java").getPath(), null), "UTF-8");
      dexData = doPostBinary(postData, conn);
    }
    
    if (!isDex(dexData))
      throw new RuntimeException("Dex generation error: " + dexData.length + " bytes - " + new String(dexData, "UTF-8"));
    //System.out.println("Dex loaded: " + dexData.length + "b");

    File dexOutputDir = TempDirMaker_makeInternal();

    //System.out.println("Saving dex to: " + dexDir.getAbsolutePath());
    try {
      saveBinaryFile(dexFile.getPath(), dexData);
    } catch (Throwable e) {
      System.out.println("Whoa!");
      throw new RuntimeException(e);
    }

    //System.out.println("Getting parent class loader.");
    ClassLoader parentClassLoader =
      //ClassLoader.getSystemClassLoader(); // does not find support jar
      //getClass().getClassLoader(); // Let's try this...
      x30.class.getClassLoader().getParent(); // XXX !

    //System.out.println("Making DexClassLoader.");
    //DexClassLoader classLoader = new DexClassLoader(dexFile.getAbsolutePath(), dexOutputDir.getAbsolutePath(), null,
    //  parentClassLoader);
    Class dcl = Class.forName("dalvik.system.DexClassLoader");
    Object classLoader = dcl.getConstructors()[0].newInstance(dexFile.getAbsolutePath(), dexOutputDir.getAbsolutePath(), null,
      parentClassLoader);

    //System.out.println("Loading main class.");
    //Class<?> theClass = classLoader.loadClass(mainClassName);
    Class<?> theClass = (Class<?>) call(classLoader, "loadClass", "main");

    //System.out.println("Main class loaded.");
    try {
      set(theClass, "androidContext", androidContext);
    } catch (Throwable e) {}

    setVars(theClass, programID);
    
    addInstance(programID, theClass);
    
    return theClass;
  }
  
  static void addInstance(String programID, Class mainClass) {
    programID = "" + parseSnippetID(programID);
    instances.put(programID, new WeakReference<Class>(mainClass));
  }
  
  static Class getInstance(String programID) {
    programID = "" + parseSnippetID(programID);
    List<WeakReference<Class>> l = instances.get(programID);
    for (WeakReference<Class> c : l) {
      Class theClass = c.get();
      // TODO: shorten the list
      if (theClass != null)
        return theClass;
    }
    return null;
  }
  
  static MultiMap<String, WeakReference<Class>> instances = new MultiMap<String, WeakReference<Class>>();
static class MultiMap<A,B> {
  Map<A, List<B>> data = new HashMap<A, List<B>>();
  
  MultiMap() {}
  MultiMap(MultiMap<A, B> map) { putAll(map); }

  public void put(A key, B value) {
    List<B> list = data.get(key);
    if (list == null)
      data.put(key, list = new ArrayList<B>());
    list.add(value);
  }

  public void addAll(A key, Collection<B> values) {
    putAll(key, values);
  }
  
  public void addAllIfNotThere(A key, Collection<B> values) {
    for (B value : values)
      setPut(key, value);
  }
  
  void setPut(A key, B value) {
    if (!containsPair(key, value))
      put(key, value);
  }
  
  boolean containsPair(A key, B value) {
    return get(key).contains(value);
  }
  
  public void putAll(A key, Collection<B> values) {
    for (B value : values)
      put(key, value);
  }

  void removeAll(A key, Collection<B> values) {
    for (B value : values)
      remove(key, value);
  }
  
  public List<B> get(A key) {
    List<B> list = data.get(key);
    return list == null ? Collections.<B> emptyList() : list;
  }

  // returns actual mutable live list
  // creates the list if not there
  public List<B> getActual(A key) {
    List<B> list = data.get(key);
    if (list == null)
      data.put(key, list = litlist());
    return list;
  }
 
  void clean(A key) {
    List<B> list = data.get(key);
    if (list != null && list.isEmpty())
      data.remove(key);
  }

  public Set<A> keySet() {
    return data.keySet();
  }

  public Set<A> keys() {
    return data.keySet();
  }

  public void remove(A key) {
    data.remove(key);
  }

  public void remove(A key, B value) {
    List<B> list = data.get(key);
    if (list != null) {
      list.remove(value);
      if (list.isEmpty())
        data.remove(key);
    }
  }

  public void clear() {
    data.clear();
  }

  public boolean containsKey(A key) {
    return data.containsKey(key);
  }

  public B getFirst(A key) {
    List<B> list = get(key);
    return list.isEmpty() ? null : list.get(0);
  }
  
  public void putAll(MultiMap<A, B> map) {
    for (A key : map.keySet())
      putAll(key, map.get(key));
  }
  
  // note: expensive operation
  int size() {
    int n = 0;
    for (List l : data.values())
      n += l(l);
    return n;
  }
  
  // expensive operation
  List<A> reverseGet(B b) {
    List<A> l = new ArrayList<A>();
    for (A key : data.keySet())
      if (data.get(key).contains(b))
        l.add(key);
    return l;
  }
} // MultiMap

  static Class<?> javax2android(File srcDir, String[] args, String programID) throws Exception {
    Class<?> theClass = loadx2android(srcDir, programID);

    // record injection
    if (l(args) == 1 && empty(first(args))) args = new String[0];
    final PaA paa = new PaA(programID, args);
    paa.injectionID = randomID(8);
    paa.mainClass = theClass;
    addInjection(paa);
    callF(getAndClearThreadLocal(onProgramLoad), paa);
    
    Method main = null;
    try {
      main = call_findStaticMethod(theClass, "main", new Object[] { androidContext }, false);
    } catch (RuntimeException e) {
    }

    //System.out.println("main method for " + androidContext + " of " + theClass + ": " + main);

    if (main != null) {
      // old style main program that returns a View
      // TODO: maybe allow programs without main method, although it doesn't seem to make sense here really (Android main program)
      System.out.println("Calling main (old-style)");
      Object view = main.invoke(null, androidContext);
      System.out.println("Calling setContentView with " + view);
      call(Class.forName("main"), "setContentViewInUIThread", view);
      //call(androidContext, "setContentView", view);
      System.out.println("Done.");
    } else {
      //System.out.println("New-style main method running.\n\n====\n");
      runMainMethod(args, theClass);
    }
    
    return theClass;
  }

  static byte[] DEX_FILE_MAGIC = { 0x64, 0x65, 0x78, 0x0a, 0x30, 0x33, 0x35, 0x00 };

  static boolean isDex(byte[] dexData) {
    if (dexData.length < DEX_FILE_MAGIC.length) return false;
    for (int i = 0; i < DEX_FILE_MAGIC.length; i++)
      if (dexData[i] != DEX_FILE_MAGIC[i])
        return false;
    return true;
  }

  static byte[] doPostBinary(String urlParameters, URLConnection conn) throws IOException {
    // connect and do POST
    setHeaders(conn);
    conn.setDoOutput(true);

    OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream());
    writer.write(urlParameters);
    writer.flush();

    byte[] contents = loadBinaryPage_noHeaders(conn);
    writer.close();
    return contents;
  }

  static String compileJava(File srcDir, List<File> libraries, File classesDir) throws IOException {
    javaCompilerOutput = null;
    ++compilations;

    // collect sources

    List<File> sources = new ArrayList<File>();
    if (verbose) System.out.println("Scanning for sources in " + srcDir.getPath());
    scanForSources(srcDir, sources, true);
    if (sources.isEmpty())
      throw new IOException("No sources found");

    // compile

    File optionsFile = File.createTempFile("javax", "");
    if (verbose) System.out.println("Compiling " + sources.size() + " source(s) to " + classesDir.getPath());
    if (verbose) System.out.println("Libraries: " + libraries);
    String options = "-d " + bashQuote(classesDir.getPath());
    writeOptions(sources, libraries, optionsFile, options);
    classesDir.mkdirs();
    return invokeJavaCompiler(optionsFile);
  }

  private static void runProgram(String javacOutput, File classesDir, File ioBaseDir,
                                 boolean silent, boolean runInProcess,
                                 List<File> libraries, String[] args, String cacheAs,
                                 String programID, Info info) throws Exception {
    // print javac output if compile failed and it hasn't been printed yet
    if (info != null) {
      info.programID = programID;
      info.programArgs = args;
    }
    boolean didNotCompile = !didCompile(classesDir);
    if (verbose || didNotCompile)
      System.out.println(javacOutput);
    if (didNotCompile)
      return;

    if (runInProcess
      || (ioBaseDir.getAbsolutePath().equals(new File(".").getAbsolutePath()) && !silent)) {
      runProgramQuick(classesDir, libraries, args, cacheAs, programID, info, ioBaseDir);
      return;
    }

    boolean echoOK = false;
    // TODO: add libraries to class path
    String bashCmd = "(cd " + bashQuote(ioBaseDir.getAbsolutePath()) + " && (java -cp "
      + bashQuote(classesDir.getAbsolutePath()) + " main" + (echoOK ? "; echo ok" : "") + "))";
    if (verbose) System.out.println(bashCmd);
    String output = backtick(bashCmd);
    lastOutput = output;
    if (verbose || !silent)
      System.out.println(output);
  }

  static boolean didCompile(File classesDir) {
    return hasFile(classesDir, "main.class");
  }

  private static void runProgramQuick(File classesDir, List<File> libraries,
                                      String[] args, String cacheAs,
                                      String programID, Info info,
                                      File ioBaseDir) throws Exception {
    // collect urls
    URL[] urls = new URL[libraries.size()+1];
    urls[0] = classesDir.toURI().toURL();
    for (int i = 0; i < libraries.size(); i++)
      urls[i+1] = libraries.get(i).toURI().toURL();

    // make class loader
    URLClassLoader classLoader = new URLClassLoader(urls);

    // load JavaX main class
    Class<?> mainClass = classLoader.loadClass("main");
    
    if (info != null) {
      info.mainClass = mainClass;
      if (info.transpiledSrc != null)
        registerSourceCode(mainClass, loadTextFile(new File(info.transpiledSrc, "main.java")));
    }
      
    if (cacheAs != null)
      programCache.put(cacheAs, mainClass);
      
    // record injection
    final PaA paa = new PaA(programID, args);
    paa.injectionID = randomID(8);
    paa.mainClass = mainClass;
    addInjection(paa);

    // change baseDir
    try {
      //print("Changing base dir to " + ioBaseDir.getAbsolutePath());
      Class virtual = mainClass.getClassLoader().loadClass("virtual");
      set(virtual, "virtual_baseDir", ioBaseDir.getAbsolutePath());
    } catch (Throwable e) { /* whatever */ }

    setVars(mainClass, programID);
    addInstance(programID, mainClass);
    try {
      runMainMethod(args, mainClass);
    } catch (Exception e) {
      paa.exception = e;
      throw e;
    } finally {
      paa.mainDone = true;
    }
  }

  static void setVars(Class<?> theClass, String programID) {
    try {
      set(theClass, "programID", programID);
    } catch (Throwable e) {}

    try {
      set(theClass, "__javax", x30.class);
    } catch (Throwable e) {}
  }


  static void runMainMethod(String[] args, Class<?> mainClass) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {
    callMain(mainClass, args);
  }

  static String invokeJavaCompiler(File optionsFile) throws IOException {
    String output;
    if (hasEcj() && !javacOnly)
      output = invokeEcj(optionsFile);
    else
      output = invokeJavac(optionsFile);
    if (verbose) System.out.println(output);
    return output;
  }

  private static boolean hasEcj() {
    try {
      Class.forName("org.eclipse.jdt.internal.compiler.batch.Main");
      return true;
    } catch (ClassNotFoundException e) {
      return false;
    }
  }

  // TODO: fix UTF-8 here too
  private static String invokeJavac(File optionsFile) throws IOException {
    String output;
    output = backtick("javac " + bashQuote("@" + optionsFile.getPath()));
    javaCompilerOutput = output;
    if (exitValue != 0) {
      System.out.println(output);
      throw new RuntimeException("javac returned errors.");
    }
    return output;
  }

  // throws ClassNotFoundException if ecj is not in classpath
  static String invokeEcj(File optionsFile) {
    try {
      StringWriter writer = new StringWriter();
      PrintWriter printWriter = new PrintWriter(writer);

      // add more eclipse options in the line below

      String[] args = {
        "-source", javaTarget,
        "-target", javaTarget,
        "-nowarn",
        "-encoding", "UTF-8",
        "@" + optionsFile.getPath()
      };
      
      if (verbose)
        print("ECJ options: " + structure(args));

      Class ecjClass = Class.forName("org.eclipse.jdt.internal.compiler.batch.Main");
      Object main = newInstance(ecjClass, printWriter, printWriter, false);
      call(main, "compile", new Object[]{args});
      int errors = (Integer) get(main, "globalErrorsCount");

      String output = writer.toString();
      javaCompilerOutput = output;
      if (errors != 0) {
        System.out.println(output);
        throw new RuntimeException("Java compiler returned errors.");
      }
      return output;
    } catch (Exception e) {
      throw e instanceof RuntimeException ? (RuntimeException) e : new RuntimeException(e);
    }
  }

  static Object newInstance(Class c, Object... args) { try {
    Constructor m = findConstructor(c, args);
    m.setAccessible(true);
    return m.newInstance(args);
  } catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

  static Constructor findConstructor(Class c, Object... args) {
    for (Constructor m : c.getDeclaredConstructors()) {
      if (!checkArgs(m.getParameterTypes(), args, verbose))
        continue;
      return m;
    }
    throw new RuntimeException("Constructor with " + args.length + " matching parameter(s) not found in " + c.getName());
  }

  static boolean checkArgs(Class[] types, Object[] args, boolean debug) {
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++)
      if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
        if (debug)
          System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
        return false;
      }
    return true;
  }

  private static void writeOptions(List<File> sources, List<File> libraries,
                                   File optionsFile, String moreOptions) throws IOException {
    FileWriter writer = new FileWriter(optionsFile);
    for (File source : sources)
      writer.write(bashQuote(source.getPath()) + " ");
    if (!libraries.isEmpty()) {
      List<String> cp = new ArrayList<String>();
      for (File lib : libraries)
        cp.add(lib.getAbsolutePath());
      writer.write("-cp " + bashQuote(join(File.pathSeparator, cp)) + " ");
    }
    writer.write(moreOptions);
    writer.close();
  }

  static void scanForSources(File source, List<File> sources, boolean topLevel) {
    if (source.isFile() && source.getName().endsWith(".java"))
      sources.add(source);
    else if (source.isDirectory() && !isSkippedDirectoryName(source.getName(), topLevel)) {
      File[] files = source.listFiles();
      for (File file : files)
        scanForSources(file, sources, false);
    }
  }

  private static boolean isSkippedDirectoryName(String name, boolean topLevel) {
    if (topLevel) return false; // input or output ok as highest directory (intentionally specified by user, not just found by a directory scan in which case we probably don't want it. it's more like heuristics actually.)
    return name.equalsIgnoreCase("input") || name.equalsIgnoreCase("output");
  }

  static int exitValue;
  public static String backtick(String cmd) throws IOException {
    ++processesStarted;
    File outFile = File.createTempFile("_backtick", "");
    File scriptFile = File.createTempFile("_backtick", isWindows() ? ".bat" : "");

    String command = cmd + " >" + bashQuote(outFile.getPath()) + " 2>&1";
    //Log.info("[Backtick] " + command);
    try {
      saveTextFile(scriptFile.getPath(), command);
      String[] command2;
      if (isWindows())
        command2 = new String[] { scriptFile.getPath() };
      else
        command2 = new String[] { "/bin/bash", scriptFile.getPath() };
      Process process = Runtime.getRuntime().exec(command2);
      try {
        process.waitFor();
      } catch (InterruptedException e) {
        throw new RuntimeException(e);
      }
      exitValue = process.exitValue();
      if (verbose)
        System.out.println("Process return code: " + exitValue);
      return loadTextFile(outFile.getPath(), "");
    } finally {
      scriptFile.delete();
    }
  }

  /** possibly improvable */
  public static String javaQuote(String text) {
    return bashQuote(text);
  }

  /** possibly improvable */
  public static String bashQuote(String text) {
    if (text == null) return null;
    return "\"" + text
      .replace("\\", "\\\\")
      .replace("\"", "\\\"")
      .replace("\n", "\\n")
      .replace("\r", "\\r") + "\"";
  }

  public final static String charsetForTextFiles = "UTF8";

  static long TempDirMaker_lastValue;

  public static File TempDirMaker_makeInternal() {
    File dir = new File(userHomeInternal(), ".javax/" + TempDirMaker_newValue());
    dir.mkdirs();
    return dir;
  }

  public static File TempDirMaker_make() {
    File dir = new File(userHome(), ".javax/" + TempDirMaker_newValue());
    dir.mkdirs();
    return dir;
  }

  private static long TempDirMaker_newValue() {
    long value;
    do
      value = System.currentTimeMillis();
    while (value == TempDirMaker_lastValue);
    TempDirMaker_lastValue = value;
    return value;
  }
  public static String join(String glue, Iterable<String> strings) {
    StringBuilder buf = new StringBuilder();
    Iterator<String> 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<String> strings) {
    return join("", strings);
  }
  
  public static String join(String[] strings) {
    return join("", strings);
  }
 // join
  
  public static boolean isWindows() {
    return System.getProperty("os.name").contains("Windows");
  }

  public static String makeRandomID(int length) {
    Random random = new Random();
    char[] id = new char[length];
    for (int i = 0; i< id.length; i++)
      id[i] = (char) ((int) 'a' + random.nextInt(26));
    return new String(id);
  }

  static String computerID;
  public static String getComputerID() throws IOException {
    if (noID) return null;
    if (computerID == null) {
      File file = new File(userHome(), ".tinybrain/computer-id");
      computerID = loadTextFile(file.getPath(), null);
      if (computerID == null) {
        computerID = makeRandomID(12);
        saveTextFile(file.getPath(), computerID);
      }
      if (verbose)
        System.out.println("Local computer ID: " + computerID);
    }
    return computerID;
  }

  static void cleanCache() {
    cleanJavaXCache(tempFileRetentionTime, verbose);
  }

  static void showSystemProperties() {
    System.out.println("System properties:\n");
    for (Map.Entry<Object, Object> entry : System.getProperties().entrySet()) {
      System.out.println("  " + entry.getKey() + " = " + entry.getValue());
    }
    System.out.println();
  }

  static void showVersion() {
    //showSystemProperties();
    boolean eclipseFound = hasEcj();
    //String platform = System.getProperty("java.vendor") + " " + System.getProperty("java.runtime.name") + " " + System.getProperty("java.version");
    String platform = System.getProperty("java.vm.name") + " " + System.getProperty("java.version");
    String os = System.getProperty("os.name"), arch = System.getProperty("os.arch");
    System.out.println("This is " + version + ".");
    System.out.println("[Details: " +
      (eclipseFound ? "Eclipse compiler (good)" : "javac (not so good)")
      + ", " + platform + ", " + arch + ", " + os + "]");
  }

  static boolean isAndroid() {
    return System.getProperty("java.vendor").toLowerCase().indexOf("android") >= 0;
  }
  static void set(Object o, String field, Object value) {
    if (o instanceof Class) set((Class) o, field, value);
    else try {
      Field f = set_findField(o.getClass(), field);
      smartSet(f, o, value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
  
  static void set(Class c, String field, Object value) {
    try {
      Field f = set_findStaticField(c, field);
      smartSet(f, null, value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
  
  static Field set_findField(Class<?> c, String field) {
    for (Field f : c.getDeclaredFields())
      if (f.getName().equals(field))
        return f;
    throw new RuntimeException("Field '" + field + "' not found in " + c.getName());
  }
  
  static Field set_findStaticField(Class<?> c, String field) {
    for (Field f : c.getDeclaredFields())
      if (f.getName().equals(field) && (f.getModifiers() & Modifier.STATIC) != 0)
        return f;
    throw new RuntimeException("Static field '" + field + "' not found in " + c.getName());
  } // set function

  static String smartJoin(String[] args) {
    String[] a2 = new String[args.length];
    for (int i = 0; i < args.length; i++) {
      a2[i] = Pattern.compile("\\w+").matcher(args[i]).matches() ? args[i] : quote(args[i]);
    }
    return join(" ", a2);
  }
  
  static void logStart(String[] args) throws IOException {
    String line = smartJoin(args);
    appendToLog(new File(userHome(), ".javax/log.txt").getPath(), line);
  }
  
  static String quote(String s) {
    if (s == null) return "null";
    return "\"" + s.replace("\\", "\\\\").replace("\"", "\\\"").replace("\r", "\\r").replace("\n", "\\n") + "\"";
  }
  
  static void appendToLog(String path, String line) throws IOException {
    appendToFile(path, "\n" + line + "\n");
  }
  
  static void appendToFile(String path, String s) throws IOException {
    new File(path).getParentFile().mkdirs();
    Writer writer = new BufferedWriter(new OutputStreamWriter(
      new FileOutputStream(path, true), "UTF-8"));
    writer.write(s);
    writer.close();
  }
  
  //// END CONSOLE STUFF

  static long now_virtualTime;
  static long now() {
    return now_virtualTime != 0 ? now_virtualTime : System.currentTimeMillis();
  }

  static void print(Object o) {
    System.out.println(o);
  }

  public synchronized void run()
  {
  }

  static void nohupJavax(String javaxargs) {
    try {
      File xfile = new File(userHome(), ".javax/x30.jar");
      if (!xfile.isFile()) {
        String url = "http://tinybrain.de/x30.jar";
        byte[] data = loadBinaryPage(new URL(url).openConnection());
        if (data.length < 1000000)
          throw new RuntimeException("Could not load " + url);
        saveBinaryFile(xfile.getPath(), data);
      }
      String jarPath = xfile.getPath();
      nohup("java -jar " + (isWindows() ? winQuote(jarPath) : bashQuote(jarPath)) + " " + javaxargs);
    } catch (Exception e) { throw new RuntimeException(e); }
  }

  /** possibly improvable */
  public static String winQuote(String text) {
    if (text == null) return null;
    return "\"" + text
      .replace("\\", "\\\\")
      .replace("\"", "\\\"")
      .replace("\n", "\\n")
      .replace("\r", "\\r") + "\"";
  }

  public static File nohup(String cmd) throws IOException {
    File outFile = File.createTempFile("nohup_" + nohup_sanitize(cmd), ".out");
    nohup(cmd, outFile, false);
    return outFile;
  }

  static String nohup_sanitize(String s) {
    return s.replaceAll("[^a-zA-Z0-9\\-_]", "");
  }

  /** outFile takes stdout and stderr. */
  public static void nohup(String cmd, File outFile, boolean append) throws IOException {
    String command = nohup_makeNohupCommand(cmd, outFile, append);

    File scriptFile = File.createTempFile("_realnohup", isWindows() ? ".bat" : "");
    System.out.println("[Nohup] " + command);
    try {
      //System.out.println("[RealNohup] Script file: " + scriptFile.getPath());
      saveTextFile(scriptFile.getPath(), command);
      String[] command2;
      if (isWindows())
        command2 = new String[] {"cmd", "/c", "start", "/b", scriptFile.getPath() };
      else
        command2 = new String[] {"/bin/bash", scriptFile.getPath() };

      Process process = Runtime.getRuntime().exec(command2);
      try {
        process.waitFor();
      } catch (InterruptedException e) {
        throw new RuntimeException(e);
      }
      int value = process.exitValue();
      //System.out.println("exit value: " + value);
    } finally {
      if (!isWindows())
        scriptFile.delete();
    }
  }

  public static String nohup_makeNohupCommand(String cmd, File outFile, boolean append) {
    mkdirsForFile(outFile);

    String command;
    if (isWindows())
      command = cmd + (append ? " >>" : " >") + winQuote(outFile.getPath()) + " 2>&1";
    else
      command = "nohup " + cmd + (append ? " >>" : " >") + bashQuote(outFile.getPath()) + " 2>&1 &";
    return command;
  }

  public static void mkdirsForFile(File file) {
    File dir = file.getParentFile();
    if (dir != null) // is null if file is in current dir
      dir.mkdirs();
  }
 

  static boolean portIsBound(int port) {
    try {
      ServerSocket s = new ServerSocket(port);
      s.close();
      return false;
    } catch (IOException e) {
      return true;
    }
  }
  
  static class LineBuf {
    StringBuffer buf = new StringBuffer();
    
    void append(String s) {
      buf.append(s);
    }
    
    String nextLine() {
      int i = buf.indexOf("\n");
      if (i >= 0) {
        String s = buf.substring(0, i > 0 && buf.charAt(i-1) == '\r' ? i-1 : i);
        buf.delete(0, i+1);
        return s;
      }
      return null;
    }
  } // LineBuf

static int chatSend_chatPort = 9751;
  static abstract class DialogIO {
    String line;
    boolean eos;
    
    abstract String readLineImpl();
    abstract boolean isStillConnected();
    abstract void sendLine(String line);
    abstract boolean isLocalConnection();
    abstract Socket getSocket();
    abstract void close();
    
    int getPort() { return getSocket().getPort(); }
    
    boolean helloRead;
    
    String readLineNoBlock() {
      String l = line;
      line = null;
      return l;
    }
    
    boolean waitForLine() { try {
 
      if (line != null) return true;
      //print("Readline");
      line = readLineImpl();
      //print("Readline done: " + line);
      if (line == null) eos = true;
      return line != null;
    
} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
    
    String readLine() {
      waitForLine();
      helloRead = true;
      return readLineNoBlock();
    }
    
    String ask(String s, Object... args) {
      if (!helloRead) readLine();
      if (args.length != 0) s = format3(s, args);
      sendLine(s);
      return readLine();
    }
    
    String askLoudly(String s, Object... args) {
      if (!helloRead) readLine();
      if (args.length != 0) s = format3(s, args);
      print("> " + s);
      sendLine(s);
      String answer = readLine();
      print("< " + answer);
      return answer;
    }
    
    void pushback(String l) {
      if (line != null)
        throw fail();
      line = l;
      helloRead = false;
    }
  }
  
  static abstract class DialogHandler {
    abstract void run(DialogIO io);
  } // DialogIO

static DialogIO chatSend_dialog;
static String chatSend_id;

static void chatSend(String line) { try {
 
  if (chatSend_dialog == null) {
    chatSend_dialog = talkTo("localhost", chatSend_chatPort);    
    chatSend_dialog.waitForLine();
    String l = chatSend_dialog.readLineNoBlock();
    if (l.startsWith("Your ID: "))
      chatSend_id = l.substring("Your ID: ".length());
  }

  chatSend_dialog.sendLine(line);

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }} // chatSend

  static class TeeOutputStream extends OutputStream {
    
    protected OutputStream out, branch;

    public TeeOutputStream( OutputStream out, OutputStream branch ) {
      this.out = out;
      this.branch = branch;
    }

    @Override
    public synchronized void write(byte[] b) throws IOException {
      write(b, 0, b.length);
    }

    @Override
    public synchronized void write(byte[] b, int off, int len) throws IOException {
      //if (verbose) oldOut.println("Tee write " + new String(b, "UTF-8"));
      out.write(b, off, len);
      this.branch.write(b, off, len);
    }

    @Override
    public synchronized void write(int b) throws IOException {
      write(new byte[] {(byte) b});
    }

    /**
     * Flushes both streams.
     * @throws IOException if an I/O error occurs
     */
    @Override
    public void flush() throws IOException {
      out.flush();
      this.branch.flush();
    }

    /**
     * Closes both streams.
     * @throws IOException if an I/O error occurs
     */
    @Override
    public void close() throws IOException {
      out.close();
      this.branch.close();
    }
  }
  
  static boolean isChatServer(String[] args) {
    for (int i = 0; i < args.length; i++)
      if (isSnippetID(args[i]))
        return parseSnippetID(args[i]) == 1000867;
    return false;
  }
  
  static String getSnippetTitle(String id) {
    try {
      return loadPage(new URL(tb_mainServer() + "/tb-int/getfield.php?id=" + parseSnippetID(id) + "&field=title"));
    } catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }
  }
  
  static void listUserThreadsWithStackTraces() {
    print("");
    Map<Thread, StackTraceElement[]> threadMap = Thread.getAllStackTraces();
    int n = 0;
    for (Thread t : threadMap.keySet()) {
      ThreadGroup g = t.getThreadGroup();
      if (g != null && g.getName().equals("system")) continue;
      ++n;
      print(t);
      for (StackTraceElement e : threadMap.get(t)) {
        print("  " + e);
      }
      print("");
    }
    print(n + " user threads.");
  }
  
  static void killMyself() {
    print("Killing myself. (insert overall feeling here)");
    System.exit(0);
  }
  
  static void makeVMAndroid() {
    Android3 a = new Android3("This is a JavaX VM.");
    a.responder = new Responder() {
      String answer(String s, List<String> history) {
        return x30.answer(s, history);
      }
    };
    a.daemon = true;
    a.console = false;
    a.incomingSilent = true; // to avoid too much printing
    a.useMultiPort = false;
    makeAndroid3(a);
    
    new MultiPort(); // auto-add multi-port
  }
  
  static class Info {
    String programID;
    String[] programArgs;
    File transpiledSrc;
    Class mainClass;
  }
  
  static Info info = new Info(); // hmm...
  
  // injectable info
  
  static List<PaA> injectable_programsInjected = new ArrayList<PaA>();
  static boolean injectable_on = true;
  static class PaA {
    String injectionID;
    String progID;
    String[] arguments;
    Class mainClass; // TODO: release eventually...
    WeakReference<Thread> mainThread;
    volatile boolean mainDone;
    volatile Throwable exception;
    
    PaA(String progID, String[] arguments) {
  this.arguments = arguments;
  this.progID = progID;}
    PaA() {}
  }
  
  static String vmID = makeRandomID(10);
  
  static synchronized void addInjection(PaA paa) {
    injectable_programsInjected.add(paa);
  }
  
  static synchronized void removeInjection(PaA paa) {
    cleanUp(paa.mainClass);
    injectable_programsInjected.remove(paa);
  }
  
  static synchronized List<PaA> getInjections() {
    return cloneList(injectable_programsInjected);
  }
  
  static String answer(String s, List<String> history) { try {
 
    Matches m = new Matches();
    
    if (match3("kill!", s)) {
      killMyself();
      return "ok";
    }
    if (match3("What is your process ID?", s) || match3("what is your pid?", s))
      return getPID();
    if (match3("get vm id", s))
      return vmID;
    if (match3("what is the javax program id?", s))
      return javaxProgramID;
    if (match3("what is the main program id?", s))
      return info.programID;
    if (match3("what are your program arguments?", s))
      return structure(info.programArgs);
    if (match3("get fields of main class", s))
      return structure(listFields(info.mainClass));
    if (match3("get field * of main class", s, m))
      return structure(get(info.mainClass, m.m[0]));
    if (match3("invoke function * of main class", s, m))
      return structure(call(info.mainClass, m.m[0]));
    if (match3("set field * of main class to *", s, m)) {
      set(info.mainClass, m.m[0], unstructure(m.m[1]));
      return "ok";
    }
    if (match3("how much memory are you consuming", s))
      return "Java heap size: " + (Runtime.getRuntime().totalMemory()+1024*1024-1)/1024/1024 + " MB";
    if (match3("how much memory is used after GC?", s)) {
      System.gc();
      return "Java heap used: " + (Runtime.getRuntime().totalMemory()-Runtime.getRuntime().freeMemory()+1024*1024-1)/1024/1024 + " MB";
    }
    if (match3("how much memory is used?", s))
      return "Java heap used: " + (Runtime.getRuntime().totalMemory()-Runtime.getRuntime().freeMemory()+1024*1024-1)/1024/1024 + " MB";
      
    if (match3("please inject program *", s, m) || match3("please inject program * with arguments *", s, m)) {
      synchronized(x30.class) {
        final String progID = formatSnippetID(unquote(m.m[0]));
        final String[] arguments = m.m.length > 1 ? toStringArray(unstructure(unquote(m.m[1]))) : new String[0];
        final PaA paa = new PaA(progID, arguments);
        paa.injectionID = randomID(8);
        addInjection(paa);
    
        // better call JavaX for translation in a single thread.
        paa.mainClass = hotwire(progID);
    
        // program may run in its own thread.
        { Thread _t_0 = new Thread(progID) {
public void run() {
try  {
          paa.mainThread = new WeakReference(currentThread());
          try {
            callMain(paa.mainClass, arguments);
          } catch (Throwable e) {
            paa.exception = e;
            e.printStackTrace();
          } finally {
            paa.mainDone = true;
            synchronized(x30.class) {}
          }
        } catch (Exception _e) {
  throw _e instanceof RuntimeException ? (RuntimeException) _e : new RuntimeException(_e); } }
};
_t_0.start(); }
  
        return format3("OK. Injection ID: *", paa.injectionID);
      }
    }
    
    if (match3("get injection exception *", s, m)) {
      String injectionID = unquote(m.m[0]);
      PaA paa = findInjection(injectionID);
      if (paa == null)
        return "Sorry. Injection not found";
      return "OK: " + paa.exception == null ? "no exception" : getStackTrace(paa.exception);
    }
     
    if (match3("get injection * variable *", s, m)) {
      String injectionID = unquote(m.m[0]);
      String var = unquote(m.m[1]);
      PaA paa = findInjection(injectionID);
      if (paa == null)
        return "Sorry. Injection not found";
      return "OK: " + structure(getOpt(paa.mainClass, var));
    }
     
    if (match3("get injection result *", s, m)) {
      String injectionID = unquote(m.m[0]);
      PaA paa = findInjection(injectionID);
      if (paa == null)
        return "Sorry. Injection not found";
      return "OK: " + structure(getOpt(paa.mainClass, "result"));
    }
     
    if (match3("is injection's * main done", s, m)) {
      String injectionID = unquote(m.m[0]);
      PaA paa = findInjection(injectionID);
      if (paa == null)
        return "Sorry. Injection not found";
      return paa.mainDone ? "Yes." : "No.";
    }
    
    if (match3("get injections", s, m)) {
      return structure(getInjections());
    }
    
    if (match3("remove injection *", s, m)) {
      String injectionID = unquote(m.m[0]);
      PaA paa = findInjection(injectionID);
      if (paa == null)
        return "Sorry. Injection not found";
      removeInjection(paa);
      return "OK, removed.";
    }
    
    if (match3("which programs are you running (ids only)", s, m)) {
      synchronized(x30.class) {
        List<String> l = new ArrayList<String>();
        for (String progID : instances.keySet())
          if (getInstance(progID) != null)
            l.add(progID);
        return format3("these: *", structure(l));
      }
    }
    
    List multiPorts = getMultiPorts();
    if (!multiPorts.isEmpty()) {
      Object multiPort = multiPorts.get(0);
      String answer = makeResponder(multiPort).answer(s, history);
      if (answer != null) return answer;
    }
    
    if (match3("list bots", s))
      return structure(litmap());
      
    if (match3("get console output", s))
      return "ok " + quote((String) call(bootUpClass, "getConsoleOutput"));
    
    return null;
  
} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
  
  static synchronized PaA findInjection(String injectionID) {
    for (PaA paa : injectable_programsInjected)
      if (eq(paa.injectionID, injectionID))
        return paa;
    return null;
  }
static int makeAndroid(String greeting) {
  return makeAndroid3(greeting).port;
}

static void makeAndroid(Android3 a) {
  makeAndroid3(a);
} // makeAndroid / makeAndroidNoConsole
  static void setOpt(Object o, String field, Object value) {
    if (o instanceof Class) setOpt((Class) o, field, value);
    else try {
      Field f = setOpt_findField(o.getClass(), field);
      if (f != null)
        smartSet(f, o, value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
  
  static void setOpt(Class c, String field, Object value) {
    try {
      Field f = setOpt_findStaticField(c, field);
      if (f != null)
        smartSet(f, null, value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
  
  static Field setOpt_findField(Class<?> c, String field) {
    for (Field f : c.getDeclaredFields())
      if (f.getName().equals(field))
        return f;
    return null;
  }
  
  static Field setOpt_findStaticField(Class<?> c, String field) {
    for (Field f : c.getDeclaredFields())
      if (f.getName().equals(field) && (f.getModifiers() & Modifier.STATIC) != 0)
        return f;
    return null;
  } // setOpt
// get purpose 1: access a list/array (safer version of x.get(y))

static <A> A get(List<A> l, int idx) {
  return idx >= 0 && idx < l(l) ? l.get(idx) : null;
}

static <A> A get(A[] l, int idx) {
  return idx >= 0 && idx < l(l) ? l[idx] : null;
}

// get purpose 2: access a field by reflection or a map

static Object get(Object o, String field) {
  if (o instanceof Class) return get((Class) o, field);
  
  if (o instanceof Map)
    return ((Map) o).get(field);
    
  if (o.getClass().getName().equals("main$DynamicObject"))
    return call(get_raw(o, "fieldValues"), "get", field);
    
  return get_raw(o, field);
}

static Object get_raw(Object o, String field) {
  try {
    Field f = get_findField(o.getClass(), field);
    f.setAccessible(true);
    return f.get(o);
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

static Object get(Class c, String field) {
  try {
    Field f = get_findStaticField(c, field);
    f.setAccessible(true);
    return f.get(null);
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

static Field get_findStaticField(Class<?> c, String field) {
  Class _c = c;
  do {
    for (Field f : _c.getDeclaredFields())
      if (f.getName().equals(field) && (f.getModifiers() & Modifier.STATIC) != 0)
        return f;
    _c = _c.getSuperclass();
  } while (_c != null);
  throw new RuntimeException("Static field '" + field + "' not found in " + c.getName());
}

static Field get_findField(Class<?> c, String field) {
  Class _c = c;
  do {
    for (Field f : _c.getDeclaredFields())
      if (f.getName().equals(field))
        return f;
    _c = _c.getSuperclass();
  } while (_c != null);
  throw new RuntimeException("Field '" + field + "' not found in " + c.getName());
} // get
static Class getMainClass() { try {
 
  return Class.forName("main");

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

static Class getMainClass(Object o) { try {
 
  return (o instanceof Class ? (Class) o : o.getClass()).getClassLoader().loadClass("main");

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }} // getMainClass
static DialogIO talkTo(int port) {
  return talkTo("localhost", port);
}

static DialogIO talkTo(String ip, int port) { try {
 
  final Socket s = new Socket(ip, port);    
  //print("Talking to " + ip + ":" + port);

  final Writer w = new OutputStreamWriter(s.getOutputStream(), "UTF-8");
  final BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream(), "UTF-8"));
  return new DialogIO() {
    boolean isLocalConnection() {
      return s.getInetAddress().isLoopbackAddress();
    }
    
    boolean isStillConnected() {
      return !(eos || s.isClosed());
    }
    
    void sendLine(String line) { try {
 
      w.write(line + "\n");
      w.flush();
    
} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
    
    String readLineImpl() { try {
 
      return in.readLine();
    
} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
    
    void close() {
      try {
        s.close();
      } catch (IOException e) {
        // whatever
      }
    }
    
    Socket getSocket() {
      return s;
    }
  };

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }} // talkTo
static String[] toStringArray(List<String> list) {
  return list.toArray(new String[list.size()]);
}

static String[] toStringArray(Object o) {
  if (o instanceof String[])
    return (String[]) o;
  else if (o instanceof List)
    return toStringArray((List<String>) o);
  else
    throw fail("Not a list or array: " + structure(o));
}
 // toStringArray
  
static byte[] loadDataSnippetImpl(String snippetID) throws IOException {
  byte[] data;
  try {
    URL url = new URL("http://eyeocr.sourceforge.net/filestore/filestore.php?cmd=serve&file=blob_"
      + parseSnippetID(snippetID) + "&contentType=application/binary");
    System.err.println("Loading library: " + url);
    try {
      data = loadBinaryPage(url.openConnection());
    } catch (IOException e) {
      data = null;
    }
    
    if (data == null || data.length == 0) {
      url = new URL("http://data.tinybrain.de/blobs/"
        + parseSnippetID(snippetID));
      System.err.println("Loading library: " + url);
      data = loadBinaryPage(url.openConnection());
    }
    System.err.println("Bytes loaded: " + data.length);
  } catch (FileNotFoundException e) {
    throw new IOException("Binary snippet #" + snippetID + " not found or not public");
  }
  return data;
}
  static AtomicBoolean readLine_used = new AtomicBoolean();
  static BufferedReader readLine_reader;

  static String readLine() { try {
 
    if (!readLine_used.compareAndSet(false, true))
      throw fail("readLine is in use.");
    try {
      while (true) {
        if (readLine_reader == null)
          readLine_reader = new BufferedReader(new InputStreamReader(System.in, "UTF-8")); // XX - is that right?
          
        if (!readLine_reader.ready())
          sleep(100);
        else {
          String s = readLine_reader.readLine();
          if (s != null) {
            print(s);
            return s;
          }
        }
      }
    } finally {
      readLine_used.set(false);
    }
  
} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
  
  static HashMap<String, WeakReference> weakrefs = new HashMap<String, WeakReference>();
  // static WeakIdentityHashMap<O, S> reverseWeakrefs = new WeakIdentityHashMap<O, S>();
  static long weakRefCounter;
  
  // TODO: lookup in reverse map
  static synchronized String weakref(Object o) {
    if (o == null) return "null";
    String id = vmID + "/" + ++weakRefCounter;
    weakrefs.put(id, new WeakReference(o));
    return id;
  }

  static synchronized Object getRef(String id) {
    // TODO: clean up the list some time
    
    WeakReference ref = weakrefs.get(id);
    if (ref == null) return null;
    return ref.get();
  }
  
  static List<Object> multiPorts = new ArrayList<Object>();
  
  static synchronized List<Object> getMultiPorts() {
    return cloneList(multiPorts);
  }
  
  // true if you're the first one
  static synchronized boolean addMultiPort(Object o) {
    multiPorts.add(o);
    /*if (multiPorts.size() == 1) {
      { Thread _t_1 = new Thread("keep alive") {
public void run() {
try  { x30.sleep(); } catch (Exception _e) {
  throw _e instanceof RuntimeException ? (RuntimeException) _e : new RuntimeException(_e); } }
};
_t_1.start(); } // keep VM alive since there is a multiport
    }*/
    return multiPorts.size() == 1;
  }
  
  static synchronized void removeMultiPort(Object o) {
    multiPorts.remove(o);
  }
  
  static String getInjectionID(Class mainClass) {
    List<PaA> l = getInjections();
    for (PaA injection : l)
      if (injection.mainClass == mainClass)
        return injection.injectionID;
    return null;
  }
  
  static String getInjectionID() { return null; } // used somewhere...
  
  static void sleep(long ms) {
    try {
      Thread.sleep(ms);
    } catch (Exception e) { throw new RuntimeException(e); }
  }

  static void sleep() { try {
 
    print("Sleeping.");
    synchronized(x30.class) { x30.class.wait(); }
  
} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
  
  static WeakHashMap<Class, String> classToSourceCode = new WeakHashMap<Class, String>();
  
  synchronized static void registerSourceCode(Class c, String src) {
    classToSourceCode.put(c, src);
  }
  
  synchronized static String getSourceCodeForClass(Class c) {
    return classToSourceCode.get(c);
  }
  static class Matches {
    String[] m;
    String get(int i) { return m[i]; }
    String unq(int i) { return unquote(m[i]); }
    String fsi(int i) { return formatSnippetID(unq(i)); }
    String fsi() { return fsi(0); }
    String tlc(int i) { return unq(i).toLowerCase(); }
    boolean bool(int i) { return "true".equals(unq(i)); }
    String rest() { return m[m.length-1]; } // for matchStart
    int psi(int i) { return Integer.parseInt(unq(i)); }
  }
 // Matches
  
  // get main class of first program (for console)
  static Object getMainMainClass() {
    PaA paa = first(getInjections());
    return paa == null ? null : paa.mainClass;
  }
  
  static boolean _inCore() {
    return true;
  }

// This is for main classes that are all static.
// (We don't go to base classes.)
static Set<String> listFields(Object c) {
  TreeSet<String> fields = new TreeSet<String>();
  for (Field f : ((Class) c).getDeclaredFields())
    fields.add(f.getName());
  return fields;
}
static Thread currentThread() {
  return Thread.currentThread();
}
static <A> List<A> cloneList(Collection<A> l) {
  //O mutex = getOpt(l, "mutex");
  /*if (mutex != null)
    synchronized(mutex) {
      ret new ArrayList<A>(l);
    }
  else
    ret new ArrayList<A>(l);*/
  // assume mutex is equal to collection, which will be true unless you explicitly pass a mutex to synchronizedList() which no one ever does.
  synchronized(l) {
    return new ArrayList<A>(l);
  }
}
static Map litmap(Object... x) {
  TreeMap map = new TreeMap();
  litmap_impl(map, x);
  return map;
}

static void litmap_impl(Map map, Object... x) {
  for (int i = 0; i < x.length-1; i += 2)
    if (x[i+1] != null)
      map.put(x[i], x[i+1]);
}
  static RuntimeException fail() {
    throw new RuntimeException("fail");
  }
  
  static RuntimeException fail(Object msg) {
    throw new RuntimeException(String.valueOf(msg));
  }
  
  static RuntimeException fail(String msg) {
    throw new RuntimeException(unnull(msg));
  }
   
  // disabled for now to shorten some programs 
  /*static RuntimeException fail(S msg, O... args) {
    throw new RuntimeException(format(msg, args));
  }*/
static void cleanJavaXCache(int retentionHours, boolean verbose) {
  try {
    if (verbose)
      System.out.println("Cleaning JavaX Cache (" + retentionHours + " hours retention time)");
    int fileDeletions = 0;
    for (String userDir : litlist(userHome(), userHomeInternal())) {
      File javax = new File(userHome(), ".javax");
      long now = now();
      File[] files = javax.listFiles();
      if (files != null) for (File dir : files) {
        if (dir.isDirectory() && Pattern.compile("\\d+").matcher(dir.getName()).matches()) {
          long time = Long.parseLong(dir.getName());
          long seconds = (now - time) / 1000;
          long minutes = seconds / 60;
          long hours = minutes / 60;
          if (hours >= retentionHours) {
            //System.out.println("Can delete " + dir.getAbsolutePath() + ", age: " + hours + " h");
            fileDeletions += cleanJavaXCache_removeDir(dir, verbose);
          }
        }
      }
    }
    if (verbose && fileDeletions != 0)
      print("Cleaned cache. File deletions: " + fileDeletions);
  } catch (Throwable __e) { printStackTrace(__e); }
}

static int cleanJavaXCache_removeDir(File dir, boolean verbose) {
  int fileDeletions = 0;
  if (dir.getAbsolutePath().indexOf(".javax") < 0)  // security check!
    throw fail("WHAT ARE YOU DOING!? >> " + dir.getAbsolutePath());
  for (File f : dir.listFiles()) {
    if (f.isDirectory())
      cleanJavaXCache_removeDir(f, verbose);
    else {
      if (verbose)
        print("Deleting " + f.getAbsolutePath());
      f.delete();
      ++fileDeletions;
    }
  }
  dir.delete();
  return fileDeletions;
}

static String fsi(String id) {
  return formatSnippetID(id);
}
 static String boss(String line) {
    try {
      //S s = sendToLocalBotOpt("Boss Bot", line);
      DialogIO io = talkTo(4990); // Boss Bot port
      io.readLine();
      io.sendLine(line);
      String s = io.readLine();
      Matches m = new Matches();
      if (match3("text: *", s, m))
        return unquote(m.m[0]);
      return null;
    } catch (Exception e) {
      //e.printStackTrace();
      return null;
    }
  }
static class DynamicObject {
  String className;
  Map<String, Object> fieldValues = new TreeMap<String, Object>();
}

static Object unstructure(String text) {
  return unstructure(text, false);
}

// TODO: backrefs for hashmap{} etc
static Object unstructure(String text, final boolean allDynamic) {
  if (text == null) return null;
  final List<String> tok = javaTok(text);
  final boolean debug = unstructure_debug;
  
  class X {
    int i = 1;
    HashMap<Integer, Object> refs = new HashMap<Integer, Object>();

    Object parse() {
      String t = tok.get(i);
      
      int refID = 0;
      if (t.startsWith("m") && isInteger(t.substring(1))) {
        refID = parseInt(t.substring(1));
        i += 2;
        t = tok.get(i);
      }
      
      if (debug)
        print("parse: " + quote(t));
        
      if (t.startsWith("\"")) {
        String s = unquote(tok.get(i));
        i += 2;
        return s;
      }
      if (t.startsWith("'")) {
        char c = unquoteCharacter(tok.get(i));
        i += 2;
        return c;
      }
      if (t.equals("bigint"))
        return parseBigInt();
      if (t.equals("d"))
        return parseDouble();
      if (t.equals("false") || t.equals("f")) {
        i += 2; return false;
      }
      if (t.equals("true") || t.equals("t")) {
        i += 2; return true;
      }
      if (t.equals("-")) {
        t = tok.get(i+2);
        i += 4;
        return isLongConstant(t) ? (Object) (-parseLong(t)) : (Object) (-parseInt(t));
      }
      if (isInteger(t) || isLongConstant(t)) {
        i += 2;
        if (debug)
          print("isLongConstant " + quote(t) + " => " + isLongConstant(t));
        if (isLongConstant(t)) return parseLong(t);
        long l = parseLong(t);
        return l != (int) l ? new Long(l) : new Integer((int) l);
      }
      
      if (t.equals("File")) {
        File f = new File(unquote(tok.get(i+2)));
        i += 4;
        return f;
      }
      
      if (t.startsWith("r") && isInteger(t.substring(1))) {
        i += 2;
        int ref = Integer.parseInt(t.substring(1));
        Object o = refs.get(ref);
        if (o == null)
          print("Warning: unsatisfied back reference " + ref);
        return o;
      }
      
      return parse_inner(refID);
    }
    
    // everything that can be backreferenced
    Object parse_inner(int refID) {
      String t = tok.get(i);
      
      if (debug)
        print("parse_inner: " + quote(t));
        
      if (t.equals("hashset"))
        return parseHashSet();
      if (t.equals("treeset"))
        return parseTreeSet();
      if (t.equals("hashmap"))
        return parseHashMap();
      if (t.equals("{"))
        return parseMap();
      if (t.equals("["))
        return parseList();
      if (t.equals("array"))
        return parseArray();
      if (t.equals("class"))
        return parseClass();
      if (t.equals("l"))
        return parseLisp();
      if (t.equals("null")) {
        i += 2; return null;
      }
      if (isJavaIdentifier(t)) {
        Class c = allDynamic ? null : findClass(t);
        DynamicObject dO = null;
        Object o = null;
        if (c != null)
          o = nuObject(c);
        else {
          dO = new DynamicObject();
          dO.className = t;
        }
        
        if (refID != 0)
          refs.put(refID, o);
          
        i += 2;
        if (i < tok.size() && tok.get(i).equals("(")) {
          consume("(");
          while (!tok.get(i).equals(")")) {
            // It's like parsing a map.
            //Object key = parse();
            //if (tok.get(i).equals(")"))
            //  key = onlyField();
            String key = unquote(tok.get(i));
            i += 2;
            consume("=");
            Object value = parse();
            if (o != null)
              setOpt(o, key, value);
            else
              dO.fieldValues.put(key, value);
            if (tok.get(i).equals(",")) i += 2;
          }
          consume(")");
        }
        return o != null ? o : dO;
      }
      throw new RuntimeException("Unknown token " + (i+1) + ": " + t);
    }
    
    Object parseSet(Set set) {
      set.addAll((List) parseList());
      return set;
    }
    
    Object parseLisp() {
      consume("l");
      consume("(");
      List list = new ArrayList();
      while (!tok.get(i).equals(")")) {
        list.add(parse());
        if (tok.get(i).equals(",")) i += 2;
      }
      consume(")");
      return newObject("main$Lisp", (String) list.get(0), subList(list, 1));
    }
    
    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 parseArray() {
      consume("array");
      consume("{");
      List list = new ArrayList();
      while (!tok.get(i).equals("}")) {
        list.add(parse());
        if (tok.get(i).equals(",")) i += 2;
      }
      consume("}");
      return list.toArray();
    }
    
    Object parseClass() {
      consume("class");
      consume("(");
      String name = tok.get(i);
      i += 2;
      consume(")");
      Class c = allDynamic ? null : findClass(name);
      if (c != null) return c;
      DynamicObject dO = new DynamicObject();
      dO.className = "java.lang.Class";
      dO.fieldValues.put("name", name);
      return dO;
    }
    
    Object parseBigInt() {
      consume("bigint");
      consume("(");
      String val = tok.get(i);
      i += 2;
      if (eq(val, "-")) {
        val = "-" + tok.get(i);
        i += 2;
      }
      consume(")");
      return new BigInteger(val);
    }
    
    Object parseDouble() {
      consume("d");
      consume("(");
      String val = unquote(tok.get(i));
      i += 2;
      consume(")");
      return Double.parseDouble(val);
    }
    
    Object parseHashMap() {
      consume("hashmap");
      return parseMap(new HashMap());
    }
    
    Object parseHashSet() {
      consume("hashset");
      return parseSet(new HashSet());
    }
    
    Object parseTreeSet() {
      consume("treeset");
      return parseSet(new TreeSet());
    }
    
    Object parseMap() {
      return parseMap(new TreeMap());
    }
    
    Object parseMap(Map map) {
      consume("{");
      while (!tok.get(i).equals("}")) {
        Object key = parse();
        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())));
        throw fail(quote(s) + " expected: " + prevToken + " " + nextTokens + " (" + i + "/" + tok.size() + ")");
      }
      i += 2;
    }
  }
  
  return new X().parse();
}

static boolean unstructure_debug;
static <A> ArrayList<A> litlist(A... a) {
  return new ArrayList<A>(Arrays.asList(a));
}
  static ThreadLocal<String> loadPage_charset = new ThreadLocal<String>();
  static boolean loadPage_allowGzip = true, loadPage_debug;
  static boolean loadPage_anonymous; // don't send computer ID
  static int loadPage_verboseness = 100000;

  public static String loadPageSilently(String url) {
    try {
      return loadPageSilently(new URL(loadPage_preprocess(url)));
    } catch (IOException e) { throw new RuntimeException(e); }
  }

  public static String loadPageSilently(URL url) {
    try {
      IOException e = null;
      for (int tries = 0; tries < 60; tries++)
        try {
          URLConnection con = url.openConnection();
          return loadPage(con, url);
        } catch (IOException _e) {
          e = _e;
          print("Retrying because of: " + e);
          sleepSeconds(1);
        }
      throw e;
    } catch (IOException e) { throw new RuntimeException(e); }
  }

  static String loadPage_preprocess(String url) {  
    if (url.startsWith("tb/"))
      url = tb_mainServer() + url;
    if (url.indexOf("://") < 0)
      url = "http://" + url;
    return url;
  }
  
  public static String loadPage(String url) {
    try {
      return loadPage(new URL(loadPage_preprocess(url)));
    } catch (IOException e) { throw new RuntimeException(e); }
  }
  
  public static String loadPage(URL url) {
    print("Loading: " + hideCredentials(url.toExternalForm()));
    return loadPageSilently(url);
  }

  public static String loadPage(URLConnection con, URL url) throws IOException {
    try {
      if (!loadPage_anonymous) {
        String computerID = getComputerID();
        if (computerID != null)
          con.setRequestProperty("X-ComputerID", computerID);
      }
      if (loadPage_allowGzip)
        con.setRequestProperty("Accept-Encoding", "gzip");
    } catch (Throwable e) {} // fails if within doPost
    String contentType = con.getContentType();
    if (contentType == null)
      throw new IOException("Page could not be read: " + url);
    //print("Content-Type: " + contentType);
    String charset = loadPage_charset == null ? null : loadPage_charset.get();
    if (charset == null) charset = loadPage_guessCharset(contentType);
    
    InputStream in = con.getInputStream();
    if ("gzip".equals(con.getContentEncoding())) {
      if (loadPage_debug)
        print("loadPage: Using gzip.");
      in = new GZIPInputStream(in);
    }
    Reader r = new InputStreamReader(in, charset);
    
    StringBuilder buf = new StringBuilder();
    int n = 0;
    while (true) {
      int ch = r.read();
      if (ch < 0)
        break;
      buf.append((char) ch);
      ++n;
      if ((n % loadPage_verboseness) == 0) print("  " + n + " chars read");
    }
    return buf.toString();
  }
  
  static String loadPage_guessCharset(String contentType) {
    Pattern p = Pattern.compile("text/[a-z]+;\\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 int l(Object[] array) {
  return array == null ? 0 : array.length;
}

static int l(byte[] array) {
  return array == null ? 0 : array.length;
}

static int l(int[] array) {
  return array == null ? 0 : array.length;
}

static int l(char[] array) {
  return array == null ? 0 : array.length;
}

static int l(Collection c) {
  return c == null ? 0 : c.size();
}

static int l(Map m) {
  return m == null ? 0 : m.size();
}

static int l(String s) {
  return s == null ? 0 : s.length();
} 


static String getServerTranspiled2(String id) {
  String transpiled = loadCachedTranspilation(id);
  String md5 = null;
  try { /* pcall 1*/ 
  if (transpiled != null)
    md5 = md5(transpiled);
  /* pcall 2 */ } catch (Throwable __e) { printStackTrace(__e); }
  String transpiledSrc = getServerTranspiled(formatSnippetID(id), md5);
  if (eq(transpiledSrc, "SAME")) {
    print("SAME");
    transpiledSrc = loadCachedTranspilation(formatSnippetID(id));
  }
  return transpiledSrc;
}

static String loadCachedTranspilation(String id) {
  return loadTextFile(new File(getCodeProgramDir(id), "Transpilation"));
}

static Object call(Object o) {
    return callFunction(o);
  }
  
  // varargs assignment fixer for a single string array argument
  static Object call(Object o, String method, String[] arg) {
    return call(o, method, new Object[] {arg});
  }
  
  static Object call(Object o, String method, Object... args) {
    try {
      if (o instanceof Class) {
        Method m = call_findStaticMethod((Class) o, method, args, false);
        m.setAccessible(true);
        return m.invoke(null, args);
      } else {
        Method m = call_findMethod(o, method, args, false);
        m.setAccessible(true);
        return m.invoke(o, args);
      }
    } catch (Exception e) {
      throw e instanceof RuntimeException ? (RuntimeException) e : new RuntimeException(e);
    }
  }

  static Method call_findStaticMethod(Class c, String method, Object[] args, boolean debug) {
    Class _c = c;
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (debug)
          System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
        if (!m.getName().equals(method)) {
          if (debug) System.out.println("Method name mismatch: " + method);
          continue;
        }

        if ((m.getModifiers() & Modifier.STATIC) == 0 || !call_checkArgs(m, args, debug))
          continue;

        return m;
      }
      c = c.getSuperclass();
    }
    throw new RuntimeException("Method '" + method + "' (static) with " + args.length + " parameter(s) not found in " + _c.getName());
  }

  static Method call_findMethod(Object o, String method, Object[] args, boolean debug) {
    Class c = o.getClass();
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (debug)
          System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
        if (m.getName().equals(method) && call_checkArgs(m, args, debug))
          return m;
      }
      c = c.getSuperclass();
    }
    throw new RuntimeException("Method '" + method + "' (non-static) with " + args.length + " parameter(s) not found in " + o.getClass().getName());
  }

  private static boolean call_checkArgs(Method m, Object[] args, boolean debug) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++)
      if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
        if (debug)
          System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
        return false;
      }
    return true;
  }


static Object first(Object list) {
  return ((List) list).isEmpty() ? null : ((List) list).get(0);
}

static <A> A first(List<A> list) {
  return list.isEmpty() ? null : list.get(0);
}

static <A> A first(A[] bla) {
  return bla == null || bla.length == 0 ? null : bla[0];
}
  static String format3(String pat, Object... args) {
    if (args.length == 0) return pat;
    
    List<String> tok = javaTokPlusPeriod(pat);
    int argidx = 0;
    for (int i = 1; i < tok.size(); i += 2)
      if (tok.get(i).equals("*"))
        tok.set(i, format3_formatArg(argidx < args.length ? args[argidx++] : "null"));
    return join(tok);
  }
  
  static String format3_formatArg(Object arg) {
    if (arg == null) return "null";
    if (arg instanceof String) {
      String s = (String) arg;
      return isIdentifier(s) || isNonNegativeInteger(s) ? s : quote(s);
    }
    if (arg instanceof Integer || arg instanceof Long) return String.valueOf(arg);
    return quote(structure(arg));
  }
  

  // class Matches is added by #752
 
  static boolean match3(String pat, String s) {
    return match3(pat, s, null);
  }
  
  static boolean match3(String pat, String s, Matches matches) {
    if (s == null) return false;
    return match3(pat, parse3(s), matches);
  }
    
  static boolean match3(String pat, List<String> toks, Matches matches) {
    List<String> tokpat = parse3(pat);
    return match3(tokpat,toks,matches);
  }

  static boolean match3(List<String> tokpat, List<String> toks, Matches matches) {

    String[] m = match2(tokpat, toks);
    //print(structure(tokpat) + " on " + structure(toks) + " => " + structure(m));
    if (m == null)
      return false;
    else {
      if (matches != null) matches.m = m;
      return true;
    }
  }
static class Android3 {
  String greeting;
  boolean publicOverride; // optionally set this in client
  int startPort = 5000; // optionally set this in client
  Responder responder;
  boolean console = true;
  boolean daemon = false;
  boolean incomingSilent = false;
  boolean useMultiPort = true;
  boolean verbose;
  
  // set by system
  int port;
  long vport;
  DialogHandler handler;
  ServerSocket server;
  
  Android3(String greeting) {
  this.greeting = greeting;}
  Android3() {}
  
  synchronized void dispose() {
    if (server != null) {
      try {
        server.close();
      } catch (IOException e) {
        print("[internal] " + e);
      }
      server = null;
    }
    if (vport != 0) try {
      //print("Dispoing virtual port " + vport);
      removeFromMultiPort(vport);
      vport = 0;
    } catch (Throwable __e) { printStackTrace(__e); }
  }
}

static abstract class Responder {
  abstract String answer(String s, List<String> history);
}

static Android3 makeAndroid3(final String greeting) {
  return makeAndroid3(new Android3(greeting));
}

static Android3 makeAndroid3(final String greeting, Responder responder) {
  Android3 android = new Android3(greeting);
  android.responder = responder;
  return makeAndroid3(android);
}

static Android3 makeAndroid3(final Android3 a) {
  if (a.responder == null)
    a.responder = new Responder() {
      String answer(String s, List<String> history) {
        return callStaticAnswerMethod(s, history);
      }
    };
    
  print(a.greeting);
  
  if (a.useMultiPort) {
    a.vport = addToMultiPort(a.greeting,
      makeAndroid3_verboseResponder(a));
    if (a.vport == 1)
      makeAndroid3_handleConsole(a);
    return a;
  }
    
  a.handler = makeAndroid3_makeDialogHandler(a);
  a.port = a.daemon
    ? startDialogServerOnPortAboveDaemon(a.startPort, a.handler)
    : startDialogServerOnPortAbove(a.startPort, a.handler);
  a.server = startDialogServer_serverSocket;

  if (a.console && makeAndroid3_consoleInUse()) a.console = false;
  
  if (a.console)
    makeAndroid3_handleConsole(a);

  record(a);
  return a;
}

static void makeAndroid3_handleConsole(final Android3 a) {
  // Console handling stuff
  print("You may also type on this console.");
  { Thread _t_0 = new Thread() {
public void run() {
try {
    List<String> history = new ArrayList<String>();
    String line;
    while ((line = readLine()) != null) {
      /*if (eq(line, "bye")) {
        print("> bye stranger");
        history = new ArrayList<S>();
      } else*/ {
        history.add(line);
        history.add(makeAndroid3_getAnswer(line, history, a)); // prints answer on console too
      }
    }
  } catch (Exception _e) {
  throw _e instanceof RuntimeException ? (RuntimeException) _e : new RuntimeException(_e); } }
};
_t_0.start(); }
}

static DialogHandler makeAndroid3_makeDialogHandler(final Android3 a) {
  return new DialogHandler() {
public void run(final DialogIO io) {
    if (!a.publicOverride && !(publicCommOn() || io.isLocalConnection())) {
      io.sendLine("Sorry, not allowed");
      return;
    }
    
    String dialogID = randomID(8);
    
    io.sendLine(a.greeting + " / Your ID: " + dialogID);
    
    List<String> history = new ArrayList<String>();
    
    while (io.isStillConnected()) {
      if (io.waitForLine()) {
        final String line = io.readLineNoBlock();
        String s = dialogID + " at " + now() + ": " + quote(line);
        if (!a.incomingSilent)
          print(s);
        if (line == "bye") {
          io.sendLine("bye stranger");
          return;
        }
        Matches m = new Matches();
        history.add(line);
        String answer;
        if (match3("this is a continuation of talk *", s, m)
          || match3("hello bot! this is a continuation of talk *", s, m)) {
          dialogID = unquote(m.m[0]);
          answer = "ok";
        } else
          answer = makeAndroid3_getAnswer(line, history, a);
        history.add(answer);
        io.sendLine(answer);
        //appendToLog(logFile, s);
      }
    }
  }};
}

static String makeAndroid3_getAnswer(String line, List<String> history, Android3 a) {
  String answer;
  try {
    answer = makeAndroid3_fallback(line, history, a.responder.answer(line, history));
  } catch (Throwable e) {
    e = getInnerException(e);
    printStackTrace(e);
    answer = e.toString();
  }
  if (!a.incomingSilent)
    print("> " + shorten(answer, 500));
  return answer;
}

static String makeAndroid3_fallback(String s, List<String> history, String answer) {
  // Now we only do the safe thing instead of VM inspection - give out our process ID
  if (answer == null && match3("what is your pid", s))
    return getPID();
    
  if (answer == null && match3("what is your program id", s)) // should be fairly safe, right?
    return getProgramID();
    
  if (match3("get injection id", s))
    return getInjectionID();
    
  if (answer == null) answer = "?";
  if (answer.indexOf('\n') >= 0 || answer.indexOf('\r') >= 0)
    answer = quote(answer);
  return answer;
}

static boolean makeAndroid3_consoleInUse() {
  for (Object o : record_list)
    if (o instanceof Android3 && ((Android3) o).console)
      return true;
  return false;
}

static Responder makeAndroid3_verboseResponder(final Android3 a) {
  return new Responder() {
    String answer(String s, List<String> history) {
      if (a.verbose)
        print("> " + s);
      String answer = a.responder.answer(s, history);
      if (a.verbose)
        print("< " + answer);
      return answer;
    }
  };
}
static void callMain(Object c, String... args) {
  callOpt(c, "main", new Object[] {args});
}
static boolean empty(Collection c) {
  return isEmpty(c);
}

static boolean empty(String s) {
  return isEmpty(s);
}

static boolean empty(Map map) {
  return map == null || map.isEmpty();
}

static boolean empty(Object o) {
  if (o instanceof Collection) return empty((Collection) o);
  if (o instanceof String) return empty((String) o);
  if (o instanceof Map) return empty((Map) o);
  return false;
}
static String getServerTranspiled(String snippetID) {
  return getServerTranspiled(snippetID, null);
}

// returns "SAME" if md5 matches
static String getServerTranspiled(String snippetID, String expectedMD5) { try {
 
  long id = parseSnippetID(snippetID);
  /*S t = getTranspilationFromBossBot(id);
  if (t != null) return t;*/
  
  String text = loadPage_utf8(tb_mainServer() + "/tb-int/get-transpiled.php?raw=1&withlibs=1&id=" + id + "&utf8=1"
    + (l(expectedMD5) > 1 ? "&md5=" + urlencode(expectedMD5) : "")
    + standardCredentials());
  if (nempty(text) && neq(text, "SAME"))
    saveTranspiledCode(snippetID, text);
  return text;

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

 /** writes safely (to temp file, then rename) */
  public static void saveTextFile(String fileName, String contents) throws IOException {
    File file = new File(fileName);
    File parentFile = file.getParentFile();
    if (parentFile != null)
      parentFile.mkdirs();
    String tempFileName = fileName + "_temp";
    File tempFile = new File(tempFileName);
    if (contents != null) {
      if (tempFile.exists()) try {
        String saveName = tempFileName + ".saved." + now();
        copyFile(tempFile, new File(saveName));
      } catch (Throwable e) { printStackTrace(e); }
      FileOutputStream fileOutputStream = new FileOutputStream(tempFile.getPath());
      OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fileOutputStream, "UTF-8");
      PrintWriter printWriter = new PrintWriter(outputStreamWriter);
      printWriter.print(contents);
      printWriter.close();
    }
    
    if (file.exists() && !file.delete())
      throw new IOException("Can't delete " + fileName);

    if (contents != null)
      if (!tempFile.renameTo(file))
        throw new IOException("Can't rename " + tempFile + " to " + file);
  }
  
  public static void saveTextFile(File fileName, String contents) {
    try {
      saveTextFile(fileName.getPath(), contents);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }
  
  static String getStackTrace(Throwable throwable) {
  StringWriter writer = new StringWriter();
  throwable.printStackTrace(new PrintWriter(writer));
  return writer.toString();
}
static String formatSnippetID(String id) {
  return "#" + parseSnippetID(id);
}

static String formatSnippetID(long id) {
  return "#" + id;
}
// extended over Class.isInstance() to handle primitive types
static boolean isInstanceX(Class type, Object arg) {
  if (type == boolean.class) return arg instanceof Boolean;
  if (type == int.class) return arg instanceof Integer;
  if (type == long.class) return arg instanceof Long;
  if (type == float.class) return arg instanceof Float;
  if (type == short.class) return arg instanceof Short;
  if (type == char.class) return arg instanceof Character;
  if (type == byte.class) return arg instanceof Byte;
  if (type == double.class) return arg instanceof Double;
  return type.isInstance(arg);
}
static boolean eq(Object a, Object b) {
  if (a == null) return b == null;
  if (a.equals(b)) return true;
  if (a instanceof BigInteger) {
    if (b instanceof Integer) return a.equals(BigInteger.valueOf((Integer) b));
    if (b instanceof Long) return a.equals(BigInteger.valueOf((Long) b));
  }
  return false;
}
 static String getSnippetFromBossBot(long snippetID) {
    return boss(format3("get text for *", snippetID));
  }
  
static <A, B> Set<A> keys(Map<A, B> map) {
  return map.keySet();
}

static Set keys(Object map) {
  return keys((Map) map);
}
static List emptyList() {
  return new ArrayList();
  //ret Collections.emptyList();
}
// try to get our current process ID
static String getPID() {
  String name = ManagementFactory.getRuntimeMXBean().getName();
  return name.replaceAll("@.*", "");
}
  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.endsWith("\"") ? s.length()-1 : s.length());
      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;
          default:
            ch = nextChar; // added by Stefan
          }
          i++;
        }
        sb.append(ch);
      }
      return sb.toString();      
    } else
      return s; // return original
  }
  // compile JavaX source, load classes & return main class
  // src can be a snippet ID or actual source code
  // TODO: record injection?
  
  static Class<?> hotwire(String src) {
    try {
      Class j = getJavaX();
      
      synchronized(j) { // hopefully this goes well...
        List<File> libraries = new ArrayList<File>();
        File srcDir = (File) call(j, "transpileMain", src, libraries);
        if (srcDir == null)
          throw fail("transpileMain returned null (src=" + quote(src) + ")");
        
        Object androidContext = get(j, "androidContext");
        if (androidContext != null)
          return (Class) call(j, "loadx2android", srcDir, src);
          
        File classesDir = (File) call(j, "TempDirMaker_make");
        String javacOutput = (String) call(j, "compileJava", srcDir, libraries, classesDir);
        System.out.println(javacOutput);
        
        URL[] urls = new URL[libraries.size()+1];
        urls[0] = classesDir.toURI().toURL();
        for (int i = 0; i < libraries.size(); i++)
          urls[i+1] = libraries.get(i).toURI().toURL();
  
        // make class loader
        URLClassLoader classLoader = new URLClassLoader(urls);
    
        // load & return main class
        Class<?> theClass = classLoader.loadClass("main");
        
        callOpt(j, "registerSourceCode", theClass, loadTextFile(new File(srcDir, "main.java")));

        call(j, "setVars", theClass, isSnippetID(src) ? src: null);
        
        if (isSnippetID(src))
          callOpt(j, "addInstance", src, theClass);
          
        if (!_inCore())
          hotwire_copyOver(theClass);
  
        return theClass;
      }
    } catch (Exception e) {
      throw e instanceof RuntimeException ? (RuntimeException) e : new RuntimeException(e);
    }
  }
static void smartSet(Field f, Object o, Object value) throws Exception {
  f.setAccessible(true);
  
  // take care of common case (long to int)
  if (f.getType() == int.class && value instanceof Long)
    value = ((Long) value).intValue();
    
  f.set(o, value);
}
static String structure(Object o) {
  HashSet refd = new HashSet();
  return structure_2(structure_1(o, 0, new IdentityHashMap(), refd), refd);
}

// leave to false, unless unstructure() breaks
static boolean structure_allowShortening = false;

static String structure_1(Object o, int stringSizeLimit, IdentityHashMap<Object, Integer> seen, HashSet<Integer> refd) {
  if (o == null) return "null";
  
  // these are never back-referenced (for readability)
  
  if (o instanceof String)
    return quote(stringSizeLimit != 0 ? shorten((String) o, stringSizeLimit) : (String) o);
    
  if (o instanceof BigInteger)
    return "bigint(" + o + ")";
  
  if (o instanceof Double)
    return "d(" + quote(str(o)) + ")";
    
  if (o instanceof Long)
    return o + "L";
  
  if (o instanceof Integer)
    return str(o);
    
  if (o instanceof Boolean)
    return ((Boolean) o).booleanValue() ? "t" : "f";
    
  if (o instanceof Character)
    return quoteCharacter((Character) o);
    
  if (o instanceof File)
    return "File " + quote(((File) o).getPath());
    
  // referencable objects follow
  
  Integer ref = seen.get(o);
  if (ref != null) {
    refd.add(ref);
    return "r" + ref;
  }
      
  ref = seen.size()+1;
  seen.put(o, ref);
  String r = "m" + ref + " "; // marker

  String name = o.getClass().getName();

  StringBuilder buf = new StringBuilder();
  
  if (o instanceof HashSet)
    return r + "hashset " + structure_1(new ArrayList((Set) o), stringSizeLimit, seen, refd);

  if (o instanceof TreeSet)
    return r + "treeset " + structure_1(new ArrayList((Set) o), stringSizeLimit, seen, refd);
  
  if (o instanceof Collection) {
    for (Object x : (Collection) o) {
      if (buf.length() != 0) buf.append(", ");
      buf.append(structure_1(x, stringSizeLimit, seen, refd));
    }
    return r + "[" + buf + "]";
  }
  
  if (o instanceof Map) {
    for (Object e : ((Map) o).entrySet()) {
      if (buf.length() != 0) buf.append(", ");
      buf.append(structure_1(((Map.Entry) e).getKey(), stringSizeLimit, seen, refd));
      buf.append("=");
      buf.append(structure_1(((Map.Entry) e).getValue(), stringSizeLimit, seen, refd));
    }
    return r + (o instanceof HashMap ? "hashmap" : "") + "{" + 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_1(Array.get(o, i), stringSizeLimit, seen, refd));
    }
    return r + "array{" + buf + "}";
  }

  if (o instanceof Class)
    return r + "class(" + quote(((Class) o).getName()) + ")";
    
  if (o instanceof Throwable)
    return r + "exception(" + quote(((Throwable) o).getMessage()) + ")";
    
  if (o instanceof BitSet) {
    BitSet bs = (BitSet) o;
    for (int i = bs.nextSetBit(0); i >= 0; i = bs.nextSetBit(i+1)) {
      if (buf.length() != 0) buf.append(", ");
       buf.append(i);
    }
    return "bitset{" + buf + "}";
  }
    
  // Need more cases? This should cover all library classes...
  if (name.startsWith("java.") || name.startsWith("javax."))
    return r + String.valueOf(o);
    
  String shortName = o.getClass().getName().replaceAll("^main\\$", "");
  
  if (shortName.equals("Lisp")) {
    buf.append("l(" + structure_1(getOpt(o, "head"), stringSizeLimit, seen, refd));
    List args = (List) ( getOpt(o, "args"));
    if (nempty(args))
      for (int i = 0; i < l(args); i++) {
        buf.append(", ");
        Object arg = args.get(i);
        
        // sweet shortening
        if (arg != null && eq(arg.getClass().getName(), "main$Lisp") && isTrue(call(arg, "isEmpty")))
          arg = get(arg, "head");
          
        buf.append(structure_1(arg, stringSizeLimit, seen, refd));
      }
    buf.append(")");
    return r + str(buf);
  }
    
  int numFields = 0;
  String fieldName = "";
  if (shortName.equals("DynamicObject")) {
    shortName = (String) get(o, "className");
    Map<String, Object> fieldValues = (Map) get(o, "fieldValues");
    
    for (String _fieldName : fieldValues.keySet()) {
      fieldName = _fieldName;
      Object value = fieldValues.get(fieldName);
      if (value != null) {
        if (buf.length() != 0) buf.append(", ");
        buf.append(fieldName + "=" + structure_1(value, stringSizeLimit, seen, refd));
      }
      ++numFields;
   }
  } else {
    // regular class
    
    Class c = o.getClass();
    while (c != Object.class) {
      Field[] fields = c.getDeclaredFields();
      for (Field field : fields) {
        if ((field.getModifiers() & Modifier.STATIC) != 0)
          continue;
        fieldName = field.getName();
        
        // skip outer object reference
        if (fieldName.indexOf("$") >= 0) continue;
  
        Object value;
        try {
          field.setAccessible(true);
          value = field.get(o);
        } catch (Exception e) {
          value = "?";
        }
        
        // put special cases here...
    
        if (value != null) {
          if (buf.length() != 0) buf.append(", ");
          buf.append(fieldName + "=" + structure_1(value, stringSizeLimit, seen, refd));
        }
        ++numFields;
      }
      c = c.getSuperclass();
    }
  }
  
  String b = buf.toString();
  
  if (numFields == 1 && structure_allowShortening)
    b = b.replaceAll("^" + fieldName + "=", ""); // drop field name if only one
  String s = shortName;
  if (buf.length() != 0)
    s += "(" + b + ")";
  return r + s;
}

// drop unused markers
static String structure_2(String s, HashSet<Integer> refd) {
  List<String> tok = javaTok(s);
  StringBuilder out = new StringBuilder();
  for (int i = 1; i < l(tok); i += 2) {
    String t = tok.get(i);
    if (t.startsWith("m") && isInteger(t.substring(1))
      && !refd.contains(parseInt(t.substring(1))))
      continue;
    out.append(t).append(tok.get(i+1));
  }
  return str(out);
}

static boolean master() {
  return webAuthed() || litlist("stefanreich", "bgrgndz", "okhan", "mrshutco").contains(getUserName());
}
static int parseInt(String s) {
  return empty(s) ? 0 : Integer.parseInt(s);
}

static String randomID(int length) {
  return makeRandomID(length);
}
static String makeResponder_callAnswerMethod(Object bot, String s, List<String> history) {
  String answer = (String) callOpt(bot, "answer", s, history);
  if (answer == null)
    answer = (String) callOpt(bot, "answer", s);
  return answer;
}

static Responder makeResponder(final Object bot) {
  if (bot instanceof Responder) return (Responder) bot;
  
  return new Responder() {
    String answer(String s, List<String> history) {
      return makeResponder_callAnswerMethod(bot, s, history);
    }
  };
}
static Object getOpt(Object o, String field) {
  if (o instanceof String) o = getBot ((String) o);
  if (o == null) return null;
  if (o instanceof Class) return getOpt((Class) o, field);
  
  if (o.getClass().getName().equals("main$DynamicObject"))
    return ((Map) getOpt_raw(o, "fieldValues")).get(field);
  
  if (o instanceof Map) return ((Map) o).get(field);
  
  return getOpt_raw(o, field);
}

static Object getOpt_raw(Object o, String field) {
  try {
    Field f = getOpt_findField(o.getClass(), field);
    if (f == null) return null;
    f.setAccessible(true);
    return f.get(o);
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

static Object getOpt(Class c, String field) {
  try {
    Field f = getOpt_findStaticField(c, field);
    if (f == null) return null;
    f.setAccessible(true);
    return f.get(null);
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

static Field getOpt_findStaticField(Class<?> c, String field) {
  Class _c = c;
  do {
    for (Field f : _c.getDeclaredFields())
      if (f.getName().equals(field) && (f.getModifiers() & Modifier.STATIC) != 0)
        return f;
    _c = _c.getSuperclass();
  } while (_c != null);
  return null;
}

static Field getOpt_findField(Class<?> c, String field) {
  Class _c = c;
  do {
    for (Field f : _c.getDeclaredFields())
      if (f.getName().equals(field))
        return f;
    _c = _c.getSuperclass();
  } while (_c != null);
  return null;
}

static Object callF(Object f, Object... args) {
  return callFunction(f, args);
}

static Object callFunction(Object f, Object... args) {
  if (f == null) return null;
  if (f instanceof Runnable) {
    ((Runnable) f).run();
    return null;
  } else if (f instanceof String)
    return call(mc(), (String) f, args);
  else
    return call(f, "get", args);
  //else throw fail("Can't call a " + getClassName(f));
}
static String shorten(String s, int max) {
  if (s == null) return "";
  return s.length() <= max ? s : s.substring(0, Math.min(s.length(), max)) + "...";
}
static List<Object> record_list = synchroList();

static void record(Object o) {
  record_list.add(o);
}
static Object getBot(String botID) {
  return callOpt(getMainBot(), "getBot", botID);
}

static String quoteCharacter(char c) {
  if (c == '\'') return "'\\''";
  if (c == '\\') return "'\\\\'";
  return "'" + c + "'";
}

static String loadPage_utf8(String url) {
  loadPage_charset.set("UTF-8");
  try {
    return loadPage(url);
  } finally {
    loadPage_charset.set(null);
  }
}
static void printStackTrace(Throwable e) {
  // we go to system.out now - system.err is nonsense
  print(getStackTrace(e));
}

static void printStackTrace() {
  printStackTrace(new Throwable());
}
// currently finds only inner classes of class "main"
// returns null on not found
// this is the simple version that is not case-tolerant
static Class findClass(String name) {
  try {
    return Class.forName("main$" + name);
  } catch (ClassNotFoundException e) {
    return null;
  }
}
static void removeFromMultiPort(long vport) {
  for (Object port : getMultiPorts())
    call(port, "removePort", vport);
}
static String str(Object o) {
  return String.valueOf(o);
}
static boolean isJavaIdentifier(String s) {
  if (s.length() == 0 || !Character.isJavaIdentifierStart(s.charAt(0)))
    return false;
  for (int i = 1; i < s.length(); i++)
    if (!Character.isJavaIdentifierPart(s.charAt(i)))
      return false;
  return true;
}
static Object addToMultiPort_responder;

static long addToMultiPort(final String botName) {
  return addToMultiPort(botName, new Object() {
    public String answer(String s, List<String> history) {
      String answer = (String) ( callOpt(getMainClass(), "answer", s, history));
      if (answer != null) return answer;
      answer = (String) callOpt(getMainClass(), "answer", s);
      if (answer != null) return answer;
      if (match3("get injection id", s))
        return getInjectionID();
      return null;
    }
  });
}

static long addToMultiPort(final String botName, final Object responder) {
  print(botName);
  addToMultiPort_responder = responder;
  startMultiPort();
  List ports = getMultiPorts();
  if (ports == null) return 0;
  if (ports.isEmpty())
    throw fail("No multiports!");
  if (ports.size() > 1)
    print("Multiple multi-ports. Using last one.");
  Object port = last(ports);
  Object responder2 = new Object() {
    public String answer(String s, List<String> history) {
      if (match3("get injection id", s))
        return getInjectionID();
      if (match3("your name", s))
        return botName;
      return (String) call(responder, "answer", s, history);
    }
  };
  record(responder2);
  return (Long) call(port, "addResponder", botName, responder2);
}

static String programID;

static String getProgramID() {
  return nempty(programID) ? formatSnippetID(programID) : "?";
}

// TODO: ask JavaX instead
static String getProgramID(Class c) {
  String id = (String) getOpt(c, "programID");
  if (nempty(id))
    return formatSnippetID(id);
  return "?";
}

static String getProgramID(Object o) {
  return getProgramID(getMainClass(o));
}

  static String unnull(String s) {
    return s == null ? "" : s;
  }
  
  static <A> List<A> unnull(List<A> l) {
    return l == null ? emptyList() : l;
  }
  
  static Object[] unnull(Object[] a) {
    return a == null ? new Object[0] : a;
  }
// replacement for class JavaTok
// maybe incomplete, might want to add floating point numbers
// todo also: extended multi-line strings

static List<String> javaTok(String s) {
  List<String> tok = new ArrayList<String>();
  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
    cc = s.substring(i, Math.min(i+2, l));

    // scan for non-whitespace
    if (c == '\'' || c == '"') {
      char opener = c;
      ++j;
      while (j < l) {
        if (s.charAt(j) == opener || s.charAt(j) == '\n') { // end at \n to not propagate unclosed string literal errors
          ++j;
          break;
        } else if (s.charAt(j) == '\\' && j+1 < l)
          j += 2;
        else
          ++j;
      }
    } else if (Character.isJavaIdentifierStart(c))
      do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || "'".indexOf(s.charAt(j)) >= 0)); // for stuff like "don't"
    else if (Character.isDigit(c)) {
      do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      if (j < l && s.charAt(j) == 'L') ++j; // Long constants like 1L
    } else if (cc.equals("[[")) {
      do ++j; while (j+1 < l && !s.substring(j, j+2).equals("]]"));
      j = Math.min(j+2, l);
    } else if (cc.equals("[=") && i+2 < l && s.charAt(i+2) == '[') {
      do ++j; while (j+2 < l && !s.substring(j, j+3).equals("]=]"));
      j = Math.min(j+3, l);
    } else
      ++j;

    tok.add(s.substring(i, j));
    i = j;
  }
  
  if ((tok.size() % 2) == 0) tok.add("");
  return tok;
}

static List<String> javaTok(List<String> tok) {
  return javaTok(join(tok));
}
  static List<String> parse3(String s) {
    return dropPunctuation(javaTokPlusPeriod(s));
  }
static Object newObject(Class c, Object... args) {
  return nuObject(c, args);
}

static Object newObject(String className, Object... args) {
  return nuObject(className, args);
}

static boolean isLongConstant(String s) {
  if (!s.endsWith("L")) return false;
  s = s.substring(0, l(s)-1);
  return isInteger(s);
}
static Class __javax;

static Class getJavaX() {
  return __javax;
}
static <A> List<A> subList(List<A> l, int startIndex) {
  return subList(l, startIndex, l(l));
}

static <A> List<A> subList(List<A> l, int startIndex, int endIndex) {
  startIndex = max(0, min(l(l), startIndex));
  endIndex = max(0, min(l(l), endIndex));
  if (startIndex > endIndex) return litlist();
  return l.subList(startIndex, endIndex);
}
static Throwable getInnerException(Throwable e) {
  while (e.getCause() != null)
    e = e.getCause();
  return e;
}
static boolean isTrue(Object o) {
  return booleanValue(o);
}
static long parseLong(String s) {
  if (s == null) return 0;
  return Long.parseLong(dropSuffix("L", s));
}

static long parseLong(Object s) {
  return Long.parseLong((String) s);
}
static boolean isIdentifier(String s) {
  return isJavaIdentifier(s);
}
// match2 matches multiple "*" (matches a single token) wildcards and zero or one "..." wildcards (matches multiple tokens)

static String[] match2(List<String> pat, List<String> tok) {
  // standard case (no ...)
  int i = pat.indexOf("...");
  if (i < 0) return match2_match(pat, tok);
  
  pat = new ArrayList<String>(pat); // We're modifying it, so copy first
  pat.set(i, "*");
  while (pat.size() < tok.size()) {
    pat.add(i, "*");
    pat.add(i+1, ""); // doesn't matter
  }
  
  return match2_match(pat, tok);
}

static String[] match2_match(List<String> pat, List<String> tok) {
  List<String> result = new ArrayList<String>();
  if (pat.size() != tok.size()) {
    /*if (debug)
      print("Size mismatch: " + structure(pat) + " vs " + structure(tok));*/
    return null;
  }
  for (int i = 1; i < pat.size(); i += 2) {
    String p = pat.get(i), t = tok.get(i);
    /*if (debug)
      print("Checking " + p + " against " + t);*/
    if (eq(p, "*"))
      result.add(t);
    else if (!equalsIgnoreCase(unquote(p), unquote(t))) // bold change - match quoted and unquoted now
      return null;
  }
  return result.toArray(new String[result.size()]);
}

static void hotwire_copyOver(Class c) {
  synchronized(StringBuffer.class) {
    for (String field : litlist("print_log", "print_silent")) {
      Object o = get(mc(), field);
      if (o != null)
        setOpt(c, field, o);
    }
      
    Object mainBot = getMainBot();
    if (mainBot != null)
      setOpt(c, "mainBot", mainBot);

    setOpt(c, "creator_class", new WeakReference(mc()));
  }
}
static Class<?> _getClass(String name) {
  try {
    return Class.forName(name);
  } catch (ClassNotFoundException e) {
    return null;
  }
}

static Class _getClass(Object o) {
  return o instanceof Class ? (Class) o : o.getClass();
}

static Class _getClass(Object realm, String name) { try {
 
  return getClass(realm).getClassLoader().loadClass(classNameToVM(name));

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
static boolean publicCommOn() {
  return "1".equals(loadTextFile(new File(userHome(), ".javax/public-communication")));
}
static String getUserName() {
  return (String) callOpt(getMainBot(), "getUserName");
}
static boolean isNonNegativeInteger(String s) {
  return s != null && Pattern.matches("\\d+", s);
}
static boolean hasMethod(Object o, String method, Object... args) {
  return findMethod(o, method, args) != null;
}
static Object nuObject(String className, Object... args) { try {
 
  return nuObject(Class.forName(className), args);

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

static Object nuObject(Object realm, String className, Object... args) {
  return nuObject(_getClass(realm, className), args);
}

static <A> A nuObject(Class<A> c, Object... args) { try {
 
  Constructor m = nuObject_findConstructor(c, args);
  m.setAccessible(true);
  return (A) m.newInstance(args);

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

static Constructor nuObject_findConstructor(Class c, Object... args) {
  for (Constructor m : c.getDeclaredConstructors()) {
    if (!nuObject_checkArgs(m.getParameterTypes(), args, false))
      continue;
    return m;
  }
  throw new RuntimeException("Constructor with " + args.length + " matching parameter(s) not found in " + c.getName());
}

 static boolean nuObject_checkArgs(Class[] types, Object[] args, boolean debug) {
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++)
      if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
        if (debug)
          System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
        return false;
      }
    return true;
  }
// This is made for NL parsing.
// It's javaTok extended with "..." token, "$n" and "#n" and
// special quotes (which are converted to normal ones).

static List<String> javaTokPlusPeriod(String s) {
  List<String> tok = new ArrayList<String>();
  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 = s.substring(i, Math.min(i+2, l));

    // scan for non-whitespace
    if (c == '\u201C' || c == '\u201D') c = '"'; // normalize quotes
    if (c == '\'' || c == '"') {
      char opener = c;
      ++j;
      while (j < l) {
        char _c = s.charAt(j);
        if (_c == '\u201C' || _c == '\u201D') _c = '"'; // normalize quotes
        if (_c == opener) {
          ++j;
          break;
        } else if (s.charAt(j) == '\\' && j+1 < l)
          j += 2;
        else
          ++j;
      }
      if (j-1 >= i+1) {
        tok.add(opener + s.substring(i+1, j-1) + opener);
        i = j;
        continue;
      }
    } else if (Character.isJavaIdentifierStart(c))
      do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || s.charAt(j) == '\'')); // for things like "this one's"
    else if (Character.isDigit(c))
      do ++j; while (j < l && Character.isDigit(s.charAt(j)));
    else if (cc.equals("[[")) {
      do ++j; while (j+1 < l && !s.substring(j, j+2).equals("]]"));
      j = Math.min(j+2, l);
    } else if (cc.equals("[=") && i+2 < l && s.charAt(i+2) == '[') {
      do ++j; while (j+2 < l && !s.substring(j, j+3).equals("]=]"));
      j = Math.min(j+3, l);
    } else if (s.substring(j, Math.min(j+3, l)).equals("..."))
      j += 3;
    else if (c == '$' || 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 void sleepSeconds(long s) {
  if (s > 0) sleep(s*1000);
}
  static Object callOpt(Object o, String method, Object... args) {
    try {
      if (o == null) return null;
      if (o instanceof Class) {
        Method m = callOpt_findStaticMethod((Class) o, method, args, false);
        if (m == null) return null;
        m.setAccessible(true);
        return m.invoke(null, args);
      } else {
        Method m = callOpt_findMethod(o, method, args, false);
        if (m == null) return null;
        m.setAccessible(true);
        return m.invoke(o, args);
      }
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  static Method callOpt_findStaticMethod(Class c, String method, Object[] args, boolean debug) {
    Class _c = c;
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (debug)
          System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
        if (!m.getName().equals(method)) {
          if (debug) System.out.println("Method name mismatch: " + method);
          continue;
        }

        if ((m.getModifiers() & Modifier.STATIC) == 0 || !callOpt_checkArgs(m, args, debug))
          continue;

        return m;
      }
      c = c.getSuperclass();
    }
    return null;
  }

  static Method callOpt_findMethod(Object o, String method, Object[] args, boolean debug) {
    Class c = o.getClass();
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (debug)
          System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
        if (m.getName().equals(method) && callOpt_checkArgs(m, args, debug))
          return m;
      }
      c = c.getSuperclass();
    }
    return null;
  }

  private static boolean callOpt_checkArgs(Method m, Object[] args, boolean debug) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++)
      if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
        if (debug)
          System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
        return false;
      }
    return true;
  }


static double parseDouble(String s) {
  return Double.parseDouble(s);
}
  static AtomicInteger dialogServer_clients = new AtomicInteger();
  static boolean dialogServer_printConnects;
  
  static Set<String> dialogServer_knownClients = synchroTreeSet();
  
  static int startDialogServerOnPortAbove(int port, DialogHandler handler) {
    while (!startDialogServerIfPortAvailable(port, handler))
      ++port;
    return port;
  }
  
  static int startDialogServerOnPortAboveDaemon(int port, DialogHandler handler) {
    while (!startDialogServerIfPortAvailable(port, handler, true))
      ++port;
    return port;
  }
  
  static void startDialogServer(int port, DialogHandler handler) {
    if (!startDialogServerIfPortAvailable(port, handler))
      throw fail("Can't start dialog server on port " + port);
  }
  
  static boolean startDialogServerIfPortAvailable(int port, final DialogHandler handler) {
    return startDialogServerIfPortAvailable(port, handler, false);
  }
  
  static ServerSocket startDialogServer_serverSocket;
    
  static boolean startDialogServerIfPortAvailable(int port, final DialogHandler handler, boolean daemon) {
    ServerSocket serverSocket = null;
    try {
      serverSocket = new ServerSocket(port);
    } catch (IOException e) {
      // probably the port number is used - let's assume there already is a chat server.
      return false;
    }
    final ServerSocket _serverSocket = serverSocket;
    startDialogServer_serverSocket = serverSocket;

    Thread thread = new Thread("Socket accept port " + port) { public void run() {
     try {
      while (true) {
        try {
          final Socket s = _serverSocket.accept();
          
          String client = s.getInetAddress().toString();
          if (!dialogServer_knownClients.contains(client) && neq(client, "/127.0.0.1")) {
            print("connect from " + client + " - clients: " + dialogServer_clients.incrementAndGet());
            dialogServer_knownClients.add(client);
          }
          
          String threadName = "Handling client " + s.getInetAddress();

          Thread t2 = new Thread(threadName) {
           public void run() {
            try {
              final Writer w = new OutputStreamWriter(s.getOutputStream(), "UTF-8");
              final BufferedReader in = new BufferedReader(
                new InputStreamReader(s.getInputStream(), "UTF-8"));
                
              DialogIO io = new DialogIO() {
              
                // This should be the same as #1001076 (talkTo)
              
    boolean isLocalConnection() {
      return s.getInetAddress().isLoopbackAddress();
    }
    
    boolean isStillConnected() {
      return !(eos || s.isClosed());
    }
    
    void sendLine(String line) { try {
 
      w.write(line + "\n");
      w.flush();
    
} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
    
    String readLineImpl() { try {
 
      return in.readLine();
    
} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
    
    void close() {
      try {
        s.close();
      } catch (IOException e) {
        // whatever
      }
    }
    
    Socket getSocket() {
      return s;
    }
    };
              
              try {
                handler.run(io);
              } finally {
                s.close();
              }
            } catch (IOException e) {
              print("[internal] " + e);
            } finally {
              //print("client disconnect - " + dialogServer_clients.decrementAndGet() + " remaining");
            }
           }
          }; // Thread t2
          t2.setDaemon(true); // ?
          t2.start();
        } catch (SocketTimeoutException e) {
        }
      }   
     } catch (IOException e) {
       print("[internal] " + e);
     }
    }};
    if (daemon) thread.setDaemon(true);
    thread.start();
   
    //print("Dialog server on port " + port + " started."); 
    return true;
  }
static boolean webAuthed() {
  return eq(Boolean.TRUE, callOpt(getBot("#1002590"), "currentHttpRequestAuthorized"));
}
static boolean isEmpty(Collection c) {
  return c == null || c.isEmpty();
}

static boolean isEmpty(CharSequence s) {
  return s == null || s.length() == 0;
}

static boolean isEmpty(Object[] a) {
  return a == null || a.length == 0;
}

static boolean isEmpty(Map map) {
  return map == null || map.isEmpty();
}
static boolean nempty(Collection c) {
  return !isEmpty(c);
}

static boolean nempty(CharSequence s) {
  return !isEmpty(s);
}

static boolean nempty(Object[] o) {
  return !isEmpty(o);
}

static String callStaticAnswerMethod(List<Class> bots, String s) {
  for (Class c : bots) try {
    String answer = callStaticAnswerMethod(c, s);
    if (!empty(answer)) return answer;
  } catch (Throwable e) {
    print("Error calling " + getProgramID(c));
    e.printStackTrace();
  }
  return null;
}

static String callStaticAnswerMethod(Class c, String s) {
  String answer = (String) callOpt(c, "answer", s, litlist(s));
  if (answer == null)
    answer = (String) callOpt(c, "answer", s);
  return emptyToNull(answer);
}

static String callStaticAnswerMethod(String s, List<String> history) {
  String answer = (String) callOpt(getMainClass(), "answer", s, history);
  if (answer == null)
    answer = (String) callOpt(getMainClass(), "answer", s);
  return emptyToNull(answer);
}
static char unquoteCharacter(String s) {
  assertTrue(s.startsWith("'") && s.length() > 1);
  return unquote("\"" + s.substring(1, s.endsWith("'") ? s.length()-1 : s.length()) + "\"").charAt(0);
}


static boolean equalsIgnoreCase(String a, String b) {
  return a == null ? b == null : a.equalsIgnoreCase(b);
}
static <A> Set<A> synchroTreeSet() {
  return Collections.synchronizedSet(new TreeSet<A>());
}

static Object mainBot;

static Object getMainBot() {
  return mainBot;
}
static int min(int a, int b) {
  return Math.min(a, b);
}

static double min(double[] c) {
  double x = Double.MAX_VALUE;
  for (double d : c) x = Math.min(x, d);
  return x;
}

static byte min(byte[] c) {
  byte x = 127;
  for (byte d : c) if (d < x) x = d;
  return x;
}
static void assertTrue(Object o) {
  assertEquals(true, o);
}
  
static boolean assertTrue(String msg, boolean b) {
  if (!b)
    throw fail(msg);
  return b;
}

static boolean assertTrue(boolean b) {
  if (!b)
    throw fail("oops");
  return b;
}
static int max(int a, int b) {
  return Math.max(a, b);
}

static long max(int a, long b) {
  return Math.max((long) a, b);
}

static long max(long a, long b) {
  return Math.max(a, b);
}

static double max(int a, double b) {
  return Math.max((double) a, b);
}

static int max(Collection<Integer> c) {
  int x = Integer.MIN_VALUE;
  for (int i : c) x = max(x, i);
  return x;
}

static double max(double[] c) {
  if (c.length == 0) return Double.MIN_VALUE;
  double x = c[0];
  for (int i = 1; i < c.length; i++) x = Math.max(x, c[i]);
  return x;
}

static byte max(byte[] c) {
  byte x = -128;
  for (byte d : c) if (d > x) x = d;
  return x;
}
static Class<?> getClass(String name) {
  try {
    return Class.forName(name);
  } catch (ClassNotFoundException e) {
    return null;
  }
}

static Class getClass(Object o) {
  return o instanceof Class ? (Class) o : o.getClass();
}

static Class getClass(Object realm, String name) { try {
 
  return getClass(realm).getClassLoader().loadClass(classNameToVM(name));

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}
static Class mc() {
  return getMainClass();
}
static boolean neq(Object a, Object b) {
  return !eq(a, b);
}
static <A> A last(List<A> l) {
  return l.isEmpty() ? null : l.get(l.size()-1);
}
static String classNameToVM(String name) {
  return name.replace(".", "$");
}
static String emptyToNull(String s) {
  return eq(s, "") ? null : s;
}
static boolean booleanValue(Object o) {
  return eq(true, o);
}
  static Method findMethod(Object o, String method, Object... args) {
    try {
      if (o == null) return null;
      if (o instanceof Class) {
        Method m = findMethod_static((Class) o, method, args, false);
        if (m == null) return null;
        m.setAccessible(true);
        return m;
      } else {
        Method m = findMethod_instance(o, method, args, false);
        if (m == null) return null;
        m.setAccessible(true);
        return m;
      }
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  static Method findMethod_static(Class c, String method, Object[] args, boolean debug) {
    Class _c = c;
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (debug)
          System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
        if (!m.getName().equals(method)) {
          if (debug) System.out.println("Method name mismatch: " + method);
          continue;
        }

        if ((m.getModifiers() & Modifier.STATIC) == 0 || !findMethod_checkArgs(m, args, debug))
          continue;

        return m;
      }
      c = c.getSuperclass();
    }
    return null;
  }

  static Method findMethod_instance(Object o, String method, Object[] args, boolean debug) {
    Class c = o.getClass();
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (debug)
          System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
        if (m.getName().equals(method) && findMethod_checkArgs(m, args, debug))
          return m;
      }
      c = c.getSuperclass();
    }
    return null;
  }

  static boolean findMethod_checkArgs(Method m, Object[] args, boolean debug) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++)
      if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
        if (debug)
          System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
        return false;
      }
    return true;
  }


static <A> List<A> synchroList() {
  return Collections.synchronizedList(new ArrayList<A>());
}

static <A> List<A> synchroList(List<A> l) {
  return Collections.synchronizedList(l);
}

static List<String> dropPunctuation_keep = litlist("*", "<", ">");

static List<String> dropPunctuation(List<String> tok) {
  tok = new ArrayList<String>(tok);
  for (int i = 1; i < tok.size(); i += 2) {
    String t = tok.get(i);
    if (t.length() == 1 && !Character.isLetter(t.charAt(0)) && !Character.isDigit(t.charAt(0)) && !dropPunctuation_keep.contains(t)) {
      tok.set(i-1, tok.get(i-1) + tok.get(i+1));
      tok.remove(i);
      tok.remove(i);
      i -= 2;
    }
  }
  return tok;
}

static String dropPunctuation(String s) {
  return join(dropPunctuation(nlTok(s)));
}
static String dropSuffix(String suffix, String s) {
  return s.endsWith(suffix) ? s.substring(0, l(s)-l(suffix)) : s;
}
// start multi-port if none exists in current VM.
static void startMultiPort() {
  List mp = getMultiPorts();
  if (mp != null && mp.isEmpty())
    callMain(hotwire("#1001672"));
}


static <A> A assertEquals(Object x, A y) {
  return assertEquals(null, x, y);
}

static <A> A assertEquals(String msg, Object x, A y) {
  if (!(x == null ? y == null : x.equals(y)))
    throw fail((msg != null ? msg + ": " : "") + structure(x) + " != " + structure(y));
  return y;
}
static List<String> nlTok(String s) {
  return javaTokPlusPeriod(s);
}


static boolean match(String pat, String s) {
  return match3(pat, s);
}

static boolean match(String pat, String s, Matches matches) {
  return match3(pat, s, matches);
}

static void cleanUp(Object c) {
  if (c instanceof List) { cleanUp((List) c); return; }
  if (!(c instanceof Class)) return;
  
  try { /* pcall 1*/ 
    // revoke license
    
    callOpt(c, "licensed_off");
    
    // call custom cleanUp() function
    
    try { /* pcall 1*/  callOpt(c, "cleanMeUp"); /* pcall 2 */ } catch (Throwable __e) { printStackTrace(__e); }
    
    // remove all virtual bots (does this work?)
    
    List androids = (List) getOpt(c, "record_list");
    List ports = getMultiPorts();
    if (androids != null)
      for (Object port : ports)
        for (Object android : androids)
          callOpt(android, "dispose"); // heck we'll dispose anything

    // sub-cleanup
    
    List<WeakReference> classes = (List<WeakReference>) ( getOpt(c, "hotwire_classes"));
    if (classes != null)
      for (WeakReference cc : classes) try { /* pcall 1*/ 
        cleanUp(cc.get());
      /* pcall 2 */ } catch (Throwable __e) { printStackTrace(__e); }
  /* pcall 2 */ } catch (Throwable __e) { printStackTrace(__e); }
}

static void cleanUp(List l) {
  for (Object c : l)
    cleanUp(c);
  l.clear();
}

static String standardCredentials() {
  String user = trim(loadTextFile(new File(userHome(), ".tinybrain/username")));
  String pass = trim(loadTextFile(new File(userHome(), ".tinybrain/userpass")));
  if (nempty(user) && nempty(pass))
    return "&_user=" + urlencode(user) + "&_pass=" + urlencode(pass);
  return "";
}

static byte[] loadBinaryPage(String url) {
  try {
    return loadBinaryPage(new URL(url).openConnection());
  } catch (IOException e) {
    throw new RuntimeException(e);
  }
}

static String trim(String s) { return s == null ? null : s.trim(); }

static String urlencode(String x) {
  try {
    return URLEncoder.encode(unnull(x), "UTF-8");
  } catch (UnsupportedEncodingException e) { throw new RuntimeException(e); }
}

public static void copyFile(File src, File dest) { try {
 
  mkdirsForFile(dest);
  FileInputStream inputStream = new FileInputStream(src.getPath());
  FileOutputStream outputStream = new FileOutputStream(dest.getPath());
  try {
    copyStream(inputStream, outputStream);
    inputStream.close();
  } finally {
    outputStream.close();
  }

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

static void copyStream(InputStream in, OutputStream out) { try {
 
  byte[] buf = new byte[65536];
  while (true) {
    int n = in.read(buf);
    if (n <= 0) return;
    out.write(buf, 0, n);
  }

} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

static String hideCredentials(String url) {
  return url.replaceAll("&_pass=[^&]*", "&_pass=<hidden>");
}

static class MultiPort {
  static class Resp {
    long virtualPort;
    String botName;
    Object responder;
  }
  
  List<Resp> responders = new ArrayList();
  Android3 android;
  long nextVirtualPort = 1;
  
  MultiPort() {
    synchronized(getJavaX()) {
      if (!getMultiPorts().isEmpty()) return;
      if (!(Boolean) call(getJavaX(), "addMultiPort", this)) {
        // XXX - hope this still works
        Android3 android = new Android3("Multi-Port at " + getVMID() + ".");
        android.useMultiPort = false;
        android.incomingSilent = true;
        android.console = false;
        android.daemon = true;
        makeAndroid3(android);
      }
    }
    //print("Dynamic Multi-Port registered with VM. Now " + l(getMultiPorts()) + " multi-port(s).");
  }
  
  String answer(String s) {
    Matches m = new Matches();
    
    if (match3("list bots", s, m)) {
      return structure(listBotsWithPort());
    }
    
    if (match3("has bot *", s, m)) {
      String name = m.unq(0);
      return findResponder(name) != null ? "yes" : "no";
    }
    
    if (match3("silent", s, m)) {
      android.incomingSilent = true;
      return "OK.";
    }
    
    if (match3("unsilent", s, m)) {
      android.incomingSilent = false;
      return "OK.";
    }
    
    if (match3("please forward to bot *: *", s, m)) {
      String bot = unquote(m.m[0]);
      String line = unquote(m.m[1]);
      Object responder = findResponder(bot);
      if (responder == null)
        return "Error: bot not found";
      else
        return (String) call(responder, "answer", line, litlist(s));
    }
    
    return null;
  }
  
  synchronized List<String> listBots() {
    List<String> list = new ArrayList();
    for (Resp r : responders)
      list.add(r.botName);
    return list;
  }
  
  synchronized Map<Long,String> listBotsWithPort() {
    Map<Long,String> map = new HashMap();
    for (Resp r : responders)
      map.put(r.virtualPort, r.botName);
    return map;
  }
  
  synchronized Object findResponder(String botName) {
    if (isInteger(botName)) {
      long vport = parseLong(botName);
      for (Resp r : responders)
        if (r.virtualPort == vport)
          return r.responder;
    } else {
      for (Resp r : responders)
        if (startsWithIgnoreCase(r.botName, botName))
          return r.responder;
    }
    return null;
  }
      
  synchronized long addResponder(String botName, Object responder) {
    Resp r = new Resp();
    r.virtualPort = nextVirtualPort++;
    r.botName = botName;
    r.responder = responder;
    responders.add(r);
    return r.virtualPort;
  }
  
  synchronized void removeResponder(Object responder) {
    for (int i = 0; i < l(responders); i++)
      if (responders.get(i).responder == responder) {
        //print("Responder removed.");
        responders.remove(i);
        return;
      }
  }
  
  synchronized void removePort(long virtualPort) {
    for (int i = 0; i < l(responders); i++)
      if (responders.get(i).virtualPort == virtualPort) {
        //print("Virtual port " + virtualPort + " removed.");
        responders.remove(i);
        return;
      }
  }
}

static interface Producer<A> {
  public A next();
}

static String getVMID() {
  return (String) get(getJavaX(), "vmID");
}

static boolean startsWithIgnoreCase(String a, String b) {
  return a != null && a.regionMatches(true, 0, b, 0, b.length());
}

static <A> A getAndClearThreadLocal(ThreadLocal<A> tl) {
  A a = tl.get();
  tl.set(null);
  return a;
}

static Map synchroHashMap() {
  return Collections.synchronizedMap(new HashMap());
}

// DUMMY!
static <A extends Map> A _registerWeakMap(A o) {
  return o;
}

static String tb_mainServer_default = "http://code.botcompany.de:8081";

static String tb_mainServer() {
  return tb_mainServer_default;
}

}