!7

sbool verbose = true;

p {
  makeAndroid("Compiler bot with caching!");
}

static synchronized S answer(S s) {
  new Matches m;
  if (match3("Please compile this JavaX snippet: *", s, m)) {
    S snippetID = unquote(m.m[0]);
    S transpiledSrc = getServerTranspiled(snippetID);
    int i = transpiledSrc.indexOf('\n');
    String libs = transpiledSrc.substring(0, Math.max(0, i));
    print("Compiling snippet: " + snippetID + ". Libs: " + libs);
    transpiledSrc = transpiledSrc.substring(i+1);
    return compile(transpiledSrc, libs);
  }
  
  if "Please compile this Java text: *"
    ret compile($1, "");

  if "Please compile this Java text: * with libraries *"
    ret compile($1, $2);

  if (match3("Please compile this Java text: * for java version *", s, m)) {
    String src = unquote(m.m[0]);
    String target = unquote(m.m[1]);
    return compile(src, "", target);
  }

  return null;
}

static synchronized S compile(S src, S libs) {
  return compile(src, libs, null);
}

static synchronized S compile(S src, S dehlibs, S javaTarget) {
  if (verbose)
    print("Compiling " + l(src) + " chars");
  S md5 = md5(src);
  File jar = getJarFile(md5);
  if (jar == null || jar.length() <= 22) {
    // have to compile
    
    try {
      javaCompileToJar(src, dehlibs, jar);
    } catch e {
      ret e.getMessage();
    }
  } else {
    print("Getting classes from cache (" + jar.getAbsolutePath() + ", " + jar.length() + " bytes)");
    touchFile(jar); // so we can find the unused ones easier
  }
  
  return "ok, " + quote(jar.getAbsolutePath());
}

static File getJarFile(S md5) {
  assertTrue(isMD5(md5));
  ret new File(getCacheProgramDir(), md5 + ".jar");
}

Began life as a copy of #1001155