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106 lines
4.1 KiB
C
106 lines
4.1 KiB
C
/* Header for CCL (Code Conversion Language) interpreter.
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Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
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Licensed to the Free Software Foundation.
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This file is part of GNU Emacs.
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GNU Emacs is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef EMACS_CCL_H
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#define EMACS_CCL_H
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/* Macros for exit status of CCL program. */
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#define CCL_STAT_SUCCESS 0 /* Terminated successfully. */
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#define CCL_STAT_SUSPEND_BY_SRC 1 /* Terminated by empty input. */
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#define CCL_STAT_SUSPEND_BY_DST 2 /* Terminated by output buffer full. */
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#define CCL_STAT_INVALID_CMD 3 /* Terminated because of invalid
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command. */
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#define CCL_STAT_QUIT 4 /* Terminated because of quit. */
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/* Structure to hold information about running CCL code. Read
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comments in the file ccl.c for the detail of each field. */
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struct ccl_program {
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int size; /* Size of the compiled code. */
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Lisp_Object *prog; /* Pointer into the compiled code. */
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int ic; /* Instruction Counter (index for PROG). */
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int eof_ic; /* Instruction Counter for end-of-file
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processing code. */
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int reg[8]; /* CCL registers, reg[7] is used for
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condition flag of relational
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operations. */
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int private_state; /* CCL instruction may use this
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for private use, mainly for saving
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internal states on suspending.
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This variable is set to 0 when ccl is
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set up. */
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int last_block; /* Set to 1 while processing the last
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block. */
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int status; /* Exit status of the CCL program. */
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int buf_magnification; /* Output buffer magnification. How
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many times bigger the output buffer
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should be than the input buffer. */
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int stack_idx; /* How deep the call of CCL_Call is nested. */
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int eol_type; /* When the CCL program is used for
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encoding by a coding system, set to
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the eol_type of the coding system.
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In other cases, always
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CODING_EOL_LF. */
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int multibyte; /* 1 if the source text is multibyte. */
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int cr_consumed; /* Flag for encoding DOS-like EOL
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format when the CCL program is used
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for encoding by a coding
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system. */
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int suppress_error; /* If nonzero, don't insert error
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message in the output. */
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int eight_bit_control; /* If nonzero, ccl_driver counts all
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eight-bit-control bytes written by
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CCL_WRITE_CHAR. After execution,
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if no such byte is written, set
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this value to zero. */
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};
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/* This data type is used for the spec field of the structure
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coding_system. */
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struct ccl_spec {
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struct ccl_program decoder;
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struct ccl_program encoder;
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unsigned char valid_codes[256];
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int cr_carryover; /* CR carryover flag. */
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unsigned char eight_bit_carryover[MAX_MULTIBYTE_LENGTH];
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};
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/* Alist of fontname patterns vs corresponding CCL program. */
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extern Lisp_Object Vfont_ccl_encoder_alist;
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/* Setup fields of the structure pointed by CCL appropriately for the
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execution of ccl program CCL_PROG (symbol or vector). */
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extern int setup_ccl_program P_ ((struct ccl_program *, Lisp_Object));
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extern int ccl_driver P_ ((struct ccl_program *, unsigned char *,
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unsigned char *, int, int, int *));
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/* Vector of CCL program names vs corresponding program data. */
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extern Lisp_Object Vccl_program_table;
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/* Symbols of ccl program have this property, a value of the property
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is an index for Vccl_protram_table. */
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extern Lisp_Object Qccl_program_idx;
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#endif /* EMACS_CCL_H */
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/* arch-tag: 14681df7-876d-43de-bc71-6b78e23a4e3c
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(do not change this comment) */
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