src/ccl.h

   1 /* Header for CCL (Code Conversion Language) interpreter.
   2    Copyright (C) 1995 Free Software Foundation, Inc.
   3    Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #ifndef _CCL_H
  23 #define _CCL_H
  24
  25 /* Structure to hold information about running CCL code.  Read
  26    comments in the file ccl.c for the detail of each field.  */
  27 struct ccl_program {
  28   int size;                     /* Size of the compiled code.  */
  29   Lisp_Object *prog;            /* Pointer into the compiled code.  */
  30   int ic;                       /* Instruction Counter (index for PROG).  */
  31   int eof_ic;                   /* Instruction Counter for end-of-file
  32                                    processing code.  */
  33   int reg[8];                   /* CCL registers, reg[7] is used for
  34                                    condition flag of relational
  35                                    operations.  */
  36   int last_block;               /* Set to 1 while processing the last
  37                                    block. */
  38   int status;                   /* Exit status of the CCL program.  */
  39   int buf_magnification;        /* Output buffer magnification.  How
  40                                    many times bigger the output buffer
  41                                    should be than the input buffer.  */
  42 };
  43
  44 /* This data type is used for the spec field of the structure
  45    coding_system.  */
  46
  47 struct ccl_spec {
  48   struct ccl_program decoder;
  49   struct ccl_program encoder;
  50 };
  51
  52 /* Alist of fontname patterns vs corresponding CCL program.  */
  53 extern Lisp_Object Vfont_ccl_encoder_alist;
  54
  55 #endif /* _CCL_H */