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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. | |
177c0ea7 | 47 | This variable is set to 0 when ccl is |
eacba247 | 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 | |
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58 | the eol_type of the coding system. |
59 | In other cases, always | |
60 | CODING_EOL_LF. */ | |
975ddbf5 | 61 | int multibyte; /* 1 if the source text is multibyte. */ |
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62 | int cr_consumed; /* Flag for encoding DOS-like EOL |
63 | format when the CCL program is used | |
64 | for encoding by a coding | |
65 | system. */ | |
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66 | int suppress_error; /* If nonzero, don't insert error |
67 | message in the output. */ | |
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68 | int eight_bit_control; /* Set to nonzero if CCL_WRITE_CHAR |
69 | writes eight-bit-control char. */ | |
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70 | }; |
71 | ||
72 | /* This data type is used for the spec field of the structure | |
73 | coding_system. */ | |
74 | ||
75 | struct ccl_spec { | |
76 | struct ccl_program decoder; | |
77 | struct ccl_program encoder; | |
a35fd731 | 78 | unsigned char valid_codes[256]; |
8538ed9a | 79 | int cr_carryover; /* CR carryover flag. */ |
898f3312 | 80 | unsigned char eight_bit_carryover[MAX_MULTIBYTE_LENGTH]; |
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81 | }; |
82 | ||
83 | /* Alist of fontname patterns vs corresponding CCL program. */ | |
84 | extern Lisp_Object Vfont_ccl_encoder_alist; | |
85 | ||
58068210 | 86 | /* Setup fields of the structure pointed by CCL appropriately for the |
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87 | execution of ccl program CCL_PROG (symbol or vector). */ |
88 | extern int setup_ccl_program P_ ((struct ccl_program *, Lisp_Object)); | |
58068210 AS |
89 | |
90 | extern int ccl_driver P_ ((struct ccl_program *, unsigned char *, | |
91 | unsigned char *, int, int, int *)); | |
92 | ||
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93 | /* Vector of CCL program names vs corresponding program data. */ |
94 | extern Lisp_Object Vccl_program_table; | |
95 | ||
96 | /* Symbols of ccl program have this property, a value of the property | |
97 | is an index for Vccl_protram_table. */ | |
98 | extern Lisp_Object Qccl_program_idx; | |
99 | ||
265702b7 | 100 | #endif /* EMACS_CCL_H */ |