rosapps/dflat32/htree.h

   1 /* ------------------- htree.h -------------------- */
   2
   3 #ifndef HTREE_H
   4 #define HTREE_H
   5
   6 typedef unsigned int DF_BYTECOUNTER;
   7
   8 /* ---- Huffman tree structure for building ---- */
   9 struct DfHTree    {
  10     DF_BYTECOUNTER cnt;        /* character frequency         */
  11     int parent;             /* offset to parent node       */
  12     int right;              /* offset to right child node  */
  13     int left;               /* offset to left child node   */
  14 };
  15
  16 /* ---- Huffman tree structure in compressed file ---- */
  17 struct DfHTr    {
  18     int right;              /* offset to right child node  */
  19     int left;               /* offset to left child node   */
  20 };
  21
  22 extern struct DfHTr *DfHelpTree;
  23
  24 void DfBuildTree(void);
  25 FILE *DfOpenHelpFile(void);
  26 void DfHelpFilePosition(long *, int *);
  27 void *DfGetHelpLine(char *);
  28 void DfSeekHelpLine(long, int);
  29
  30 #endif
  31