Examples of org.apache.hadoop.io.InputBuffer$Buffer

org.luaj.vm2.Buffer
A reusable {@link InputStream} implementation that reads from an in-memorybuffer.
This saves memory over creating a new InputStream and ByteArrayInputStream each time data is read.
Typical usage is something like the following:
```
 InputBuffer buffer = new InputBuffer(); while (... loop condition ...) { byte[] data = ... get data ...; int dataLength = ... get data length ...; buffer.reset(data, dataLength); ... read buffer using InputStream methods ... } 
```
@see DataInputBuffer @see DataOutput

     * @throws Exception if failed
     */
    @Test
    public void readArray_random() throws Exception {
        byte[] bytes = "ABC|D|EF".getBytes(Charset.forName("ASCII"));
        InputBuffer buffer = new InputBuffer();
        buffer.reset(bytes, bytes.length);
        Random random = new Random(12345);
        for (int i = 0; i < 100000; i++) {
            int[] bounds = new int[5];
            for (int j = 0; j < bounds.length; j++) {
                bounds[j] = random.nextInt(bytes.length + 1);

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   * except as arguments to the q option. 
   */
  static Varargs format( Varargs args ) {
    LuaString fmt = args.checkstring( 1 );
    final int n = fmt.length();
    Buffer result = new Buffer(n);
    int arg = 1;
    int c;
    
    for ( int i = 0; i < n; ) {
      switch ( c = fmt.luaByte( i++ ) ) {
      case '\n':
        result.append( "\n" );
        break;
      default:
        result.append( (byte) c );
        break;
      case L_ESC:
        if ( i < n ) {
          if ( ( c = fmt.luaByte( i ) ) == L_ESC ) {
            ++i;
            result.append( (byte)L_ESC );
          } else {
            arg++;
            FormatDesc fdsc = new FormatDesc(args, fmt, i );
            i += fdsc.length;
            switch ( fdsc.conversion ) {
            case 'c':
              fdsc.format( result, (byte)args.checkint( arg ) );
              break;
            case 'i':
            case 'd':
              fdsc.format( result, args.checkint( arg ) );
              break;
            case 'o':
            case 'u':
            case 'x':
            case 'X':
              fdsc.format( result, args.checklong( arg ) );
              break;
            case 'e':
            case 'E':
            case 'f':
            case 'g':
            case 'G':
              fdsc.format( result, args.checkdouble( arg ) );
              break;
            case 'q':
              addquoted( result, args.checkstring( arg ) );
              break;
            case 's': {
              LuaString s = args.checkstring( arg );
              if ( fdsc.precision == -1 && s.length() >= 100 ) {
                result.append( s );
              } else {
                fdsc.format( result, s );
              }
            }  break;
            default:
              error("invalid option '%"+(char)fdsc.conversion+"' to 'format'");
              break;
            }
          }
        }
      }
    }
    
    return result.tostring();
  }

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    LuaString p = args.checkstring( 2 );
    LuaValue repl = args.arg( 3 );
    int max_s = args.optint( 4, srclen + 1 );
    final boolean anchor = p.length() > 0 && p.charAt( 0 ) == '^';
    
    Buffer lbuf = new Buffer( srclen );
    MatchState ms = new MatchState( args, src, p );
    
    int soffset = 0;
    int n = 0;
    while ( n < max_s ) {
      ms.reset();
      int res = ms.match( soffset, anchor ? 1 : 0 );
      if ( res != -1 ) {
        n++;
        ms.add_value( lbuf, soffset, res, repl );
      }
      if ( res != -1 && res > soffset )
        soffset = res;
      else if ( soffset < srclen )
        lbuf.append( (byte) src.luaByte( soffset++ ) );
      else
        break;
      if ( anchor )
        break;
    }
    lbuf.append( src.substring( soffset, srclen ) );
    return varargsOf(lbuf.tostring(), valueOf(n));
  }

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