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Line 113... Line 113...
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static void line_free(struct line far *ptr) {
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static void line_free(struct line far *ptr) {
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  _dos_freemem(FP_SEG(ptr));
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  _dos_freemem(FP_SEG(ptr));
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}
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}
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static int curline_resize(struct file far *db, unsigned short newsiz) {
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static int curline_resize(struct file *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 (much faster) */
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  /* try resizing the block (much faster) */
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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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  if (_dos_setblock((sizeof(struct line) + newsiz + 15) / 16, FP_SEG(db->cursor), &maxavail) == 0) return(0);
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}
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}
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/* append a nul-terminated string to line at cursor position */
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/* append a nul-terminated string to line at cursor position */
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static int line_append(struct file *f, const char far *buf, unsigned short len) {
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static int line_append(struct file *f, const char *buf, unsigned short len) {
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  if (sizeof(struct line) + f->cursor->len + len < len) goto ERR; /* overflow check */
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  if (sizeof(struct line) + f->cursor->len + len < len) goto ERR; /* overflow check */
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  if (curline_resize(f, f->cursor->len + len) != 0) goto ERR;
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  if (curline_resize(f, f->cursor->len + len) != 0) goto ERR;
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  _fmemmove(f->cursor->payload + f->cursor->len, buf, len);
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  _fmemmove(f->cursor->payload + f->cursor->len, buf, len);
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  f->cursor->len += len;
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  f->cursor->len += len;