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1 /* Header for CCL (Code Conversion Language) interpreter.
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2 Copyright (C) 1995,1999 Electrotechnical Laboratory, JAPAN.
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3 Licensed to the Free Software Foundation.
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4
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5 This file is part of XEmacs.
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6
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7 GNU Emacs is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2, or (at your option)
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10 any later version.
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11
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12 GNU Emacs is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GNU Emacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: FSF Emacs 20.3.10 */
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23
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24 #ifndef _CCL_H
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25 #define _CCL_H
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26
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27 /* Macros for exit status of CCL program. */
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28 #define CCL_STAT_SUCCESS 0 /* Terminated successfully. */
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29 #define CCL_STAT_SUSPEND_BY_SRC 1 /* Terminated by empty input. */
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30 #define CCL_STAT_SUSPEND_BY_DST 2 /* Terminated by output buffer full. */
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31 #define CCL_STAT_INVALID_CMD 3 /* Terminated because of invalid
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32 command. */
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33 #define CCL_STAT_QUIT 4 /* Terminated because of quit. */
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34
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35 /* Structure to hold information about running CCL code. Read
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36 comments in the file ccl.c for the detail of each field. */
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37 struct ccl_program {
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38 int size; /* Size of the compiled code. */
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39 Lisp_Object *prog; /* Pointer into the compiled code. */
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40 int ic; /* Instruction Counter (index for PROG). */
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41 int eof_ic; /* Instruction Counter for end-of-file
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42 processing code. */
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43 int reg[8]; /* CCL registers, reg[7] is used for
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44 condition flag of relational
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45 operations. */
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46 int private_state; /* CCL instruction may use this
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47 for private use, mainly for preservation
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48 internal states for suspending.
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49 This variable is set to 0 when ccl is
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50 set up. */
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51 int last_block; /* Set to 1 while processing the last
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52 block. */
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53 int status; /* Exit status of the CCL program. */
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54 int buf_magnification; /* Output buffer magnification. How
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55 many times bigger the output buffer
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56 should be than the input buffer. */
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57 int stack_idx; /* How deep the call of CCL_Call is nested. */
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58 };
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59
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60
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61 #define CCL_MODE_ENCODING 0
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62 #define CCL_MODE_DECODING 1
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63
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64 int ccl_driver (struct ccl_program *ccl, CONST unsigned char *source,
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65 unsigned_char_dynarr *destination, int src_bytes,
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66 int *consumed, int conversion_mode);
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67 void setup_ccl_program (struct ccl_program *ccl, Lisp_Object val);
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68
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69 /* Alist of fontname patterns vs corresponding CCL program. */
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70 extern Lisp_Object Vfont_ccl_encoder_alist;
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71 extern Lisp_Object Qccl_program;
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72
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73 #endif /* _CCL_H */
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