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 * functions                                                                 *
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 * functions                                                                 *
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 *****************************************************************************/
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 *****************************************************************************/
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static struct line far *line_calloc(unsigned short siz) {
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static struct line far *line_calloc(unsigned short siz) {
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  unsigned int seg;
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  unsigned int seg;
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  if (_dos_allocmem((sizeof(struct line) + siz) / 16 + 1, &seg) != 0) return(NULL);
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  if (_dos_allocmem((sizeof(struct line) + siz + 15) / 16, &seg) != 0) return(NULL);
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  _fmemset(MK_FP(seg, 0), 0, siz);
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  _fmemset(MK_FP(seg, 0), 0, siz);
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  return(MK_FP(seg, 0));
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  return(MK_FP(seg, 0));
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}
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}
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static signed char curline_resize(struct file far *db, unsigned short newsiz) {
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static signed char curline_resize(struct file far *db, unsigned short newsiz) {
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  unsigned int maxavail;
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  unsigned int maxavail;
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  struct line far *newptr;
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  struct line far *newptr;
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  /* try resizing the block (faster) */
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  /* try resizing the block (much faster) */
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  if (_dos_setblock((sizeof(struct line) + newsiz) / 16 + 1, FP_SEG(db->cursor), &maxavail) == 0) return(0);
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  if (_dos_setblock((sizeof(struct line) + newsiz + 15) / 16, FP_SEG(db->cursor), &maxavail) == 0) return(0);
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  /* create a new block and copy data over */
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  /* create a new block and copy data over */
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  newptr = line_calloc(newsiz);
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  newptr = line_calloc(newsiz);
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  if (newptr == NULL) return(-1);
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  if (newptr == NULL) return(-1);
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  _fmemmove(newptr, db->cursor, sizeof(struct line) + db->cursor->len);
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  _fmemmove(newptr, db->cursor, sizeof(struct line) + db->cursor->len);