workbench/libs/diskfont/dosstreamhook.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Hook used by endian funcs to read from a dos file.
   6     Lang: english
   7 */
   8
   9 /****************************************************************************************/
  10
  11 #include <proto/dos.h>
  12 #include <aros/debug.h>
  13 #include <aros/asmcall.h>
  14 #include <aros/bigendianio.h>
  15
  16 #undef DOSBase
  17
  18 /****************************************************************************************/
  19
  20 AROS_UFH3(LONG, dosstreamhook,
  21     AROS_UFHA(struct Hook *, hook, A0),
  22     AROS_UFHA(BPTR,          fh,   A2),
  23     AROS_UFHA(ULONG       *, msg,  A1)
  24 )
  25 {
  26     AROS_USERFUNC_INIT
  27
  28     APTR DOSBase = hook->h_Data;
  29
  30     LONG rc = 0;
  31
  32     switch (*msg)
  33     {
  34     case BEIO_READ:
  35         rc = FGetC (fh);
  36 #if 0
  37 kprintf ("dsh: Read: %02X\n", rc);
  38 #endif
  39
  40         break;
  41
  42     case BEIO_WRITE:
  43         rc = FPutC (fh, ((struct BEIOM_Write *)msg)->Data);
  44         break;
  45
  46     case BEIO_IGNORE:
  47         Flush (fh);
  48
  49         rc = Seek (fh, ((struct BEIOM_Ignore *)msg)->Count, OFFSET_CURRENT);
  50 #if 0
  51 kprintf ("dsh: Skip %d\n", ((struct BEIOM_Ignore *)msg)->Count);
  52 #endif
  53         break;
  54
  55     }
  56
  57     return rc;
  58     AROS_USERFUNC_EXIT
  59 } /* dosstreamhook */
  60
  61 /****************************************************************************************/