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1 /* Header for CCL (Code Conversion Language) interpreter.
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2 Copyright (C) 1995 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 #ifndef INCLUDED_mule_ccl_h_
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23 #define INCLUDED_mule_ccl_h_
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24
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25 /* Macros for exit status of CCL program. */
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26 #define CCL_STAT_SUCCESS 0 /* Terminated successfully. */
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27 #define CCL_STAT_SUSPEND_BY_SRC 1 /* Terminated by empty input. */
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28 #define CCL_STAT_SUSPEND_BY_DST 2 /* Terminated by output buffer full. */
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29 #define CCL_STAT_INVALID_CMD 3 /* Terminated because of invalid
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30 command. */
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31 #define CCL_STAT_QUIT 4 /* Terminated because of quit. */
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32
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33 /* Structure to hold information about running CCL code. Read
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34 comments in the file ccl.c for the detail of each field. */
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35 struct ccl_program {
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36 int size; /* Size of the compiled code. */
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37 Lisp_Object *prog; /* Pointer into the compiled code. */
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38 int ic; /* Instruction Counter (index for PROG). */
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39 int eof_ic; /* Instruction Counter for end-of-file
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40 processing code. */
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41 int reg[8]; /* CCL registers, reg[7] is used for
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42 condition flag of relational
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43 operations. */
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44 int private_state; /* CCL instruction may use this
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45 for private use, mainly for saving
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46 internal states on suspending.
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47 This variable is set to 0 when ccl is
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48 set up. */
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49 int last_block; /* Set to 1 while processing the last
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50 block. */
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51 int status; /* Exit status of the CCL program. */
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52 int buf_magnification; /* Output buffer magnification. How
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53 many times bigger the output buffer
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54 should be than the input buffer. */
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55 int stack_idx; /* How deep the call of CCL_Call is nested. */
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56 int eol_type; /* When the CCL program is used for
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57 encoding by a coding system, set to
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58 the eol_type of the coding
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59 system. */
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60 int multibyte; /* 1 if the source text is multibyte. */
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61 };
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62
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63 #define CCL_MODE_ENCODING 0
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64 #define CCL_MODE_DECODING 1
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65
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66 #define CCL_CODING_EOL_LF 0 /* Line-feed only, same as Emacs'
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67 internal format. */
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68 #define CCL_CODING_EOL_CRLF 1 /* Sequence of carriage-return and
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69 line-feed. */
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70 #define CCL_CODING_EOL_CR 2 /* Carriage-return only. */
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71
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72 /* Alist of fontname patterns vs corresponding CCL program. */
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73 extern Lisp_Object Vfont_ccl_encoder_alist;
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74
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75 /* Setup fields of the structure pointed by CCL appropriately for the
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76 execution of ccl program CCL_PROG (symbol or vector). */
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77 extern int setup_ccl_program (struct ccl_program *, Lisp_Object);
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78
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79 extern int ccl_driver (struct ccl_program *, const unsigned char *,
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80 unsigned_char_dynarr *, int, int *, int);
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81
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82 EXFUN (Fregister_ccl_program, 2);
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83
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84 extern Lisp_Object Qccl_program;
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85
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86 /* Vector of CCL program names vs corresponding program data. */
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87 extern Lisp_Object Vccl_program_table;
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88
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89 /* Symbols of ccl program have this property, a value of the property
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90 is an index for Vccl_program_table. */
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91 extern Lisp_Object Qccl_program_idx;
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92
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93 #endif /* INCLUDED_mule_ccl_h_ */
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