Ejemplo n.º 1
0
  /** Converts a String into a byte array. */
  protected static byte[] byteArrayFromString(String s) throws TextParseException {
    byte[] array = s.getBytes();
    boolean escaped = false;
    boolean hasEscapes = false;

    for (int i = 0; i < array.length; i++) {
      if (array[i] == '\\') {
        hasEscapes = true;
        break;
      }
    }
    if (!hasEscapes) {
      if (array.length > 255) {
        throw new TextParseException("text string too long");
      }
      return array;
    }

    ByteArrayOutputStream os = new ByteArrayOutputStream();

    int digits = 0;
    int intval = 0;
    for (int i = 0; i < array.length; i++) {
      byte b = array[i];
      if (escaped) {
        if (b >= '0' && b <= '9' && digits < 3) {
          digits++;
          intval *= 10;
          intval += (b - '0');
          if (intval > 255) throw new TextParseException("bad escape");
          if (digits < 3) continue;
          b = (byte) intval;
        } else if (digits > 0 && digits < 3) throw new TextParseException("bad escape");
        os.write(b);
        escaped = false;
      } else if (array[i] == '\\') {
        escaped = true;
        digits = 0;
        intval = 0;
      } else os.write(array[i]);
    }
    if (digits > 0 && digits < 3) throw new TextParseException("bad escape");
    array = os.toByteArray();
    if (array.length > 255) {
      throw new TextParseException("text string too long");
    }

    return os.toByteArray();
  }
Ejemplo n.º 2
0
 public static byte[] parse(String s) {
   if (s.equals("(null)")) {
     return null;
   }
   try {
     int n = s.length();
     ByteArrayOutputStream out = new ByteArrayOutputStream(n / 3);
     StringReader r = new StringReader(s);
     while (true) {
       int b1 = nextNibble(r);
       if (b1 < 0) {
         break;
       }
       int b2 = nextNibble(r);
       if (b2 < 0) {
         throw new RuntimeException("Invalid string " + s);
       }
       int b = (b1 << 4) | b2;
       out.write(b);
     }
     return out.toByteArray();
   } catch (IOException e) {
     throw new RuntimeException(e);
   }
 }
 private Class<?> getClassFromStream(
     final InputStream stream, final String classname, final File container)
     throws IOException, SecurityException {
   final ByteArrayOutputStream baos = new ByteArrayOutputStream();
   int bytesRead = -1;
   final byte[] buffer = new byte[8192];
   while ((bytesRead = stream.read(buffer, 0, 8192)) != -1) {
     baos.write(buffer, 0, bytesRead);
   }
   final byte[] classData = baos.toByteArray();
   return this.defineClassFromData(container, classData, classname);
 }
Ejemplo n.º 4
0
 public byte[] getBytes(String className) {
   try {
     Tracer.mark();
     String realName = className.replace(".", "/");
     realName += ".class";
     JarEntry je = jf.getJarEntry(realName);
     InputStream is = jf.getInputStream(je);
     ByteArrayOutputStream baos = new ByteArrayOutputStream();
     byte[] buff = new byte[4096];
     while (is.available() > 0) {
       int read = is.read(buff);
       baos.write(buff, 0, read);
     }
     is.close();
     return baos.toByteArray();
   } catch (Exception e) {
   } finally {
     Tracer.unmark();
   }
   return null;
 }