src/ccl.h

   1 /* Header for CCL (Code Conversion Language) interpreter.
   2
   3    Copyright (C) 1995 Free Software Foundation, Inc.
   4    Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #ifndef _CCL_H
  21 #define _CCL_H
  22
  23 /* Structure to hold information about running CCL code.  Read
  24    comments in the file ccl.c for the detail of each field.  */
  25 struct ccl_program {
  26   int size;                     /* Size of the compiled code.  */
  27   Lisp_Object *prog;            /* Pointer into the compiled code.  */
  28   int ic;                       /* Instruction Counter (index for PROG).  */
  29   int eof_ic;                   /* Instruction Counter for end-of-file
  30                                    processing code.  */
  31   int reg[8];                   /* CCL registers, reg[7] is used for
  32                                    condition flag of relational
  33                                    operations.  */
  34   int last_block;               /* Set to 1 while processing the last
  35                                    block. */
  36   int status;                   /* Exit status of the CCL program.  */
  37   int buf_magnification;        /* Output buffer magnification.  How
  38                                    many times bigger the output buffer
  39                                    should be than the input buffer.  */
  40 };
  41
  42 /* This data type is used for the spec field of the structure
  43    coding_system.  */
  44
  45 struct ccl_spec {
  46   struct ccl_program decoder;
  47   struct ccl_program encoder;
  48 };
  49
  50 /* Alist of fontname patterns vs corresponding CCL program.  */
  51 extern Lisp_Object Vfont_ccl_encoder_alist;
  52
  53 #endif /* _CCL_H */