include/wvwordwrap.h

   1 /* -*- Mode: C++ -*-
   2  * Worldvisions Weaver Software:
   3  *   Copyright (C) 1997-2002 Net Integration Technologies, Inc.
   4  *
   5  * A very simple word wrapping encoder.
   6  */
   7 #ifndef __WVWORDWRAP_H
   8 #define __WVWORDWRAP_H
   9
  10 #include "wvencoder.h"
  11
  12 /**
  13  * Trivial word wrapper.
  14  * Recognizes newlines in input stream as end of line.
  15  * Words are output until no more will fit, in which case a newline
  16  * is output and the word is presented on the next line.  Wrapped
  17  * word delimiter characters are discarded such that a wrapped word
  18  * will always be placed at the beginning of a line.
  19  */
  20 class WvWordWrapEncoder : public WvEncoder
  21 {
  22     const int maxwidth;
  23     char *line;
  24     int width;     // current visual position
  25     int curindex;  // current index in line array
  26     int wordindex; // index of beginning of word in line array
  27     bool inword;   // if true, we're in a word
  28
  29 public:
  30     WvWordWrapEncoder(int maxwidth);
  31     virtual ~WvWordWrapEncoder();
  32
  33 protected:
  34     // on flush, outputs a partial line with remaining chars
  35     virtual bool _encode(WvBuf &inbuf, WvBuf &outbuf, bool flush);
  36     virtual bool _reset(); // supported
  37
  38 private:
  39     void flushline(WvBuf &outbuf);
  40 };
  41
  42 #endif // __WVWORDWRAP_H