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4ed46869 | 1 | /* Header for CCL (Code Conversion Language) interpreter. |
4ed46869 | 2 | Copyright (C) 1995 Electrotechnical Laboratory, JAPAN. |
75c8c592 | 3 | Licensed to the Free Software Foundation. |
4ed46869 | 4 | |
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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. | |
4ed46869 | 11 | |
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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. | |
4ed46869 | 16 | |
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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. */ | |
4ed46869 | 21 | |
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22 | #ifndef EMACS_CCL_H |
23 | #define EMACS_CCL_H | |
4ed46869 | 24 | |
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25 | /* Macros for exit status of CCL program. */ |
26 | #define CCL_STAT_SUCCESS 0 /* Terminated successfully. */ | |
27 | #define CCL_STAT_SUSPEND_BY_SRC 1 /* Terminated by empty input. */ | |
28 | #define CCL_STAT_SUSPEND_BY_DST 2 /* Terminated by output buffer full. */ | |
29 | #define CCL_STAT_INVALID_CMD 3 /* Terminated because of invalid | |
30 | command. */ | |
31 | #define CCL_STAT_QUIT 4 /* Terminated because of quit. */ | |
32 | ||
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33 | /* Structure to hold information about running CCL code. Read |
34 | comments in the file ccl.c for the detail of each field. */ | |
35 | struct ccl_program { | |
36 | int size; /* Size of the compiled code. */ | |
37 | Lisp_Object *prog; /* Pointer into the compiled code. */ | |
38 | int ic; /* Instruction Counter (index for PROG). */ | |
39 | int eof_ic; /* Instruction Counter for end-of-file | |
40 | processing code. */ | |
41 | int reg[8]; /* CCL registers, reg[7] is used for | |
42 | condition flag of relational | |
43 | operations. */ | |
eacba247 | 44 | int private_state; /* CCL instruction may use this |
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45 | for private use, mainly for saving |
46 | internal states on suspending. | |
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47 | This variable is set to 0 when ccl is |
48 | set up. */ | |
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49 | int last_block; /* Set to 1 while processing the last |
50 | block. */ | |
51 | int status; /* Exit status of the CCL program. */ | |
52 | int buf_magnification; /* Output buffer magnification. How | |
53 | many times bigger the output buffer | |
54 | should be than the input buffer. */ | |
e05645ee | 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 |
57 | encoding by a coding system, set to | |
58 | the eol_type of the coding | |
59 | system. */ | |
975ddbf5 | 60 | int multibyte; /* 1 if the source text is multibyte. */ |
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61 | }; |
62 | ||
63 | /* This data type is used for the spec field of the structure | |
64 | coding_system. */ | |
65 | ||
66 | struct ccl_spec { | |
67 | struct ccl_program decoder; | |
68 | struct ccl_program encoder; | |
a35fd731 | 69 | unsigned char valid_codes[256]; |
8538ed9a | 70 | int cr_carryover; /* CR carryover flag. */ |
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71 | }; |
72 | ||
73 | /* Alist of fontname patterns vs corresponding CCL program. */ | |
74 | extern Lisp_Object Vfont_ccl_encoder_alist; | |
75 | ||
58068210 | 76 | /* Setup fields of the structure pointed by CCL appropriately for the |
e5e6d6fb KH |
77 | execution of ccl program CCL_PROG (symbol or vector). */ |
78 | extern int setup_ccl_program P_ ((struct ccl_program *, Lisp_Object)); | |
58068210 AS |
79 | |
80 | extern int ccl_driver P_ ((struct ccl_program *, unsigned char *, | |
81 | unsigned char *, int, int, int *)); | |
82 | ||
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83 | /* Vector of CCL program names vs corresponding program data. */ |
84 | extern Lisp_Object Vccl_program_table; | |
85 | ||
86 | /* Symbols of ccl program have this property, a value of the property | |
87 | is an index for Vccl_protram_table. */ | |
88 | extern Lisp_Object Qccl_program_idx; | |
89 | ||
265702b7 | 90 | #endif /* EMACS_CCL_H */ |