class x9 { static boolean verbose = false, translate = false, list = false; static List<String> mainTranslators = new ArrayList<String>(); public static void main(String[] args) throws Exception { File ioBaseDir = new File("."), inputDir = null, outputDir = null; String src = "."; for (int i = 0; i < args.length; i++) { String arg = args[i]; if (arg.equals("-v") || arg.equals("-verbose")) verbose = true; else if (arg.equals("-finderror")) verbose = true; else if (arg.equals("translate")) translate = true; else if (arg.equals("list")) list = true; 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(args[++i]); else src = arg; } 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")); } javax4(src, ioBaseDir, translate, list); if (outputDir != null) { copyInput(new File(ioBaseDir, "output"), outputDir); System.out.println("Output copied to: " + outputDir.getAbsolutePath()); } } public static void javax4(String src, File ioDir, boolean translate, boolean list) throws Exception { File srcDir; if (isSnippetID(src)) srcDir = loadSnippetAsMainJava(src); else srcDir = new File(src); File X = programToInput(srcDir); X = applyTranslators(X, mainTranslators); X = defaultTranslate(X); if (translate) System.out.println("Program translated to: " + X.getAbsolutePath()); else if (list) System.out.println(loadTextFile(new File(X, "main.java").getPath(), null)); else javax2(X, ioDir, false); } private static File defaultTranslate(File x) throws Exception { x = luaPrintToJavaPrint(x); x = autoTranslate(x); return x; } private static File autoTranslate(File x) 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); } private static List<String> findTranslators(List<String> lines) { List<String> translators = new ArrayList<String>(); Pattern pattern = Pattern.compile("^!([0-9# \t]+)"); for (ListIterator<String> iterator = lines.listIterator(); iterator.hasNext(); ) { String line = iterator.next(); line = line.trim(); Matcher matcher = pattern.matcher(line); if (matcher.find()) { translators.addAll(Arrays.asList(matcher.group(1).split("[ \t]+"))); 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) throws Exception { for (String translator : translators) x = applyTranslator(x, translator); return x; } private static File applyTranslator(File x, String translator) throws Exception { if (verbose) System.out.println("Using translator " + translator + " on sources in " + x.getPath()); File newDir = runJavaX2_src_from_snippet(translator, null, x, !verbose); if (!new File(newDir, "main.java").exists()) throw new Exception("Translator " + translator + " did not generate main.java"); 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); if (verbose) System.out.println(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 { File srcDir = TempDirMaker_make(); saveTextFile(new File(srcDir, "main.java").getPath(), loadSnippet(snippetID, false)); return srcDir; } public static File loadSnippetAsMainJavaVerified(String snippetID, String hash) throws IOException { File srcDir = TempDirMaker_make(); saveTextFile(new File(srcDir, "main.java").getPath(), loadSnippetVerified(snippetID, hash)); return srcDir; } /** returns output dir */ private static File runJavaX2_src_from_snippet(String snippetID, String hash, File input, boolean silent) throws Exception { File srcDir = hash == null ? loadSnippetAsMainJava(snippetID) : loadSnippetAsMainJavaVerified(snippetID, hash); srcDir = defaultTranslate(srcDir); return runJavaX(srcDir, input, silent); } /** returns output dir */ private static File runJavaX(File originalSrcDir, File originalInput, boolean silent) throws Exception { File ioBaseDir = TempDirMaker_make(); 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); return outputDir; } private static void copyInput(File src, File dst) throws IOException { copyDirectory(src, dst); } private static File programToInput(File srcDir) { return srcDir; } 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 = new FileInputStream(src); FileOutputStream outputStream = new FileOutputStream(dest); try { copy(inputStream, outputStream); inputStream.close(); } finally { outputStream.close(); } } 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 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"; FileOutputStream fileOutputStream = new FileOutputStream(tempFileName); OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fileOutputStream, charsetForTextFiles); PrintWriter printWriter = new PrintWriter(outputStreamWriter); printWriter.print(contents); printWriter.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, String defaultContents) throws IOException { if (!new File(fileName).exists()) return defaultContents; FileInputStream fileInputStream = new FileInputStream(fileName); InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, charsetForTextFiles); return loadTextFile(inputStreamReader); } public static String loadTextFile(Reader reader) throws IOException { StringBuilder builder = new StringBuilder(); try { BufferedReader bufferedReader = new BufferedReader(reader); String line; while ((line = bufferedReader.readLine()) != null) builder.append(line).append('\n'); } finally { reader.close(); } return builder.length() == 0 ? "" : builder.substring(0, builder.length()-1); } static File DiskSnippetCache_dir; public static void initDiskSnippetCache(File dir) { DiskSnippetCache_dir = dir; dir.mkdirs(); } 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 File DiskSnippetCache_getDir() { return DiskSnippetCache_dir; } public static void initSnippetCache() { if (DiskSnippetCache_dir == null) initDiskSnippetCache(new File(System.getProperty("user.home"), ".tinybrain/snippet-cache")); } public static String loadSnippetVerified(String snippetID, String hash) throws IOException { String text = loadSnippet(snippetID, !hash.isEmpty()); 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 java.security.MessageDigest.getInstance("MD5").digest(data); } catch (java.security.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, boolean preferCached) throws IOException { return loadSnippet(parseSnippetID(snippetID), preferCached); } 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); } public static String loadSnippet(long snippetID, boolean preferCached) throws IOException { if (preferCached) { initSnippetCache(); String text = DiskSnippetCache_get(snippetID); if (text != null) return text; } String text; try { URL url = new URL("http://tinybrain.de:8080/getraw.php?id=" + snippetID); text = loadPage(url); } catch (FileNotFoundException e) { throw new IOException("Snippet #" + snippetID + " not found or not public"); } 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 loadPage(URL url) throws IOException { System.out.println("Loading: " + url.toExternalForm()); URLConnection con = url.openConnection(); return loadPage(con, url); } public static String loadPage(URLConnection con, URL url) throws IOException { String contentType = con.getContentType(); if (contentType == null) throw new IOException("Page could not be read: " + url); //Log.info("Content-Type: " + contentType); String charset = guessCharset(contentType); Reader r = new InputStreamReader(con.getInputStream(), charset); StringBuilder buf = new StringBuilder(); while (true) { int ch = r.read(); if (ch < 0) break; //Log.info("Chars read: " + buf.length()); buf.append((char) ch); } return buf.toString(); } 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"; } public static void javax2(File srcDir, File ioBaseDir, boolean silent) throws Exception { List<File> sources = new ArrayList<File>(); if (verbose) System.out.println("Scanning for sources in " + srcDir.getPath()); scanForSources(srcDir, sources, true); if (sources.isEmpty()) { System.out.println("No sources found"); return; } File optionsFile = File.createTempFile("javax", ""); File classesDir = TempDirMaker_make(); if (verbose) System.out.println("Compiling " + sources.size() + " source(s) to " + classesDir.getPath()); String options = "-d " + bashQuote(classesDir.getPath()); writeOptions(sources, optionsFile, options); classesDir.mkdirs(); String javacOutput = invokeJavac(optionsFile); if (verbose) System.out.println("Running program (" + srcDir.getAbsolutePath() + ") on io dir " + ioBaseDir.getAbsolutePath() + "\n"); runProgram(javacOutput, classesDir, ioBaseDir, silent); } private static void runProgram(String javacOutput, File classesDir, File ioBaseDir, boolean silent) throws Exception { // print javac output if compile failed and it hasn't been printed yet boolean didNotCompile = !hasFile(classesDir, "main.class"); if (verbose || didNotCompile) System.out.println(javacOutput); if (didNotCompile) return; if (ioBaseDir.getAbsolutePath().equals(new File(".").getAbsolutePath()) && !silent) { runProgramQuick(classesDir); return; } boolean echoOK = false; 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); if (verbose || !silent) System.out.println(output); } private static void runProgramQuick(File classesDir) throws Exception { URLClassLoader classLoader = new URLClassLoader(new URL[]{classesDir.toURI().toURL()}); Class<?> mainClass = classLoader.loadClass("main"); java.lang.reflect.Method main = mainClass.getMethod("main", String[].class); main.invoke(null, (Object) new String[0]); } private static String invokeJavac(File optionsFile) throws IOException { String javacOutput = backtick("javac " + bashQuote("@" + optionsFile.getPath())); if (verbose) System.out.println(javacOutput); return javacOutput; } private static void writeOptions(List<File> sources, File sourcesFile, String moreOptions) throws IOException { FileWriter writer = new FileWriter(sourcesFile); for (File source : sources) writer.write(bashQuote(source.getPath()) + " "); writer.write(moreOptions); writer.close(); } private 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"); } public static String backtick(String cmd) throws IOException { File outFile = File.createTempFile("_backtick", ""); File scriptFile = File.createTempFile("_backtick", ""); String command = cmd + ">" + bashQuote(outFile.getPath()) + " 2>&1"; //Log.info("[Backtick] " + command); try { saveTextFile(scriptFile.getPath(), command); String[] command2 = {"/bin/bash", scriptFile.getPath() }; Process process = Runtime.getRuntime().exec(command2); try { process.waitFor(); } catch (InterruptedException e) { throw new RuntimeException(e); } int value = process.exitValue(); //Log.info("exit value: " + value); return loadTextFile(outFile.getPath(), ""); } finally { scriptFile.delete(); } } /** 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_make() { File dir = new File(System.getProperty("user.home"), ".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; } }
Began life as a copy of #599
Snippet is not live.
Travelled to 12 computer(s): aoiabmzegqzx, bhatertpkbcr, cbybwowwnfue, gwrvuhgaqvyk, ishqpsrjomds, lpdgvwnxivlt, mqqgnosmbjvj, pyentgdyhuwx, pzhvpgtvlbxg, tslmcundralx, tvejysmllsmz, vouqrxazstgt
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Snippet ID: | #2000342 |
Snippet name: | x9.java with class non-public (embeddable template) |
Eternal ID of this version: | #2000342/1 |
Text MD5: | 49a3eb5dfa60b7f4f0047c39e04f7171 |
Author: | stefan |
Category: | javax |
Type: | New Tinybrain snippet |
Public (visible to everyone): | Yes |
Archived (hidden from active list): | No |
Created/modified: | 2015-05-10 17:46:32 |
Source code size: | 20727 bytes / 571 lines |
Pitched / IR pitched: | No / Yes |
Views / Downloads: | 705 / 127 |
Referenced in: | [show references] |