[bpt/emacs.git] / src / ccl.h

/* Header for CCL (Code Conversion Language) interpreter.
   Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
   Licensed to the Free Software Foundation.

This file is part of GNU Emacs.

GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.  */

#ifndef EMACS_CCL_H
#define EMACS_CCL_H

/* Macros for exit status of CCL program.  */
#define CCL_STAT_SUCCESS	0 /* Terminated successfully.  */
#define CCL_STAT_SUSPEND_BY_SRC	1 /* Terminated by empty input.  */
#define CCL_STAT_SUSPEND_BY_DST	2 /* Terminated by output buffer full.  */
#define CCL_STAT_INVALID_CMD	3 /* Terminated because of invalid
				     command.  */
#define CCL_STAT_QUIT		4 /* Terminated because of quit.  */

/* Structure to hold information about running CCL code.  Read
   comments in the file ccl.c for the detail of each field.  */
struct ccl_program {
  int idx;			/* Index number of the CCL program.
				   -1 means that the program was given
				   by a vector, not by a program
				   name.  */
  int size;			/* Size of the compiled code.  */
  Lisp_Object *prog;		/* Pointer into the compiled code.  */
  int ic;			/* Instruction Counter (index for PROG).  */
  int eof_ic;			/* Instruction Counter for end-of-file
				   processing code.  */
  int reg[8];			/* CCL registers, reg[7] is used for
				   condition flag of relational
				   operations.  */
  int private_state;            /* CCL instruction may use this
				   for private use, mainly for saving
				   internal states on suspending.
				   This variable is set to 0 when ccl is
				   set up.  */
  int last_block;		/* Set to 1 while processing the last
				   block. */
  int status;			/* Exit status of the CCL program.  */
  int buf_magnification;	/* Output buffer magnification.  How
				   many times bigger the output buffer
				   should be than the input buffer.  */
  int stack_idx;		/* How deep the call of CCL_Call is nested.  */
  int eol_type;			/* When the CCL program is used for
				   encoding by a coding system, set to
				   the eol_type of the coding system.
				   In other cases, always
				   CODING_EOL_LF.  */
  int multibyte;		/* 1 if the source text is multibyte.  */
  int cr_consumed;		/* Flag for encoding DOS-like EOL
				   format when the CCL program is used
				   for encoding by a coding
				   system.  */
  int suppress_error;		/* If nonzero, don't insert error
				   message in the output.  */
  int eight_bit_control;	/* If nonzero, ccl_driver counts all
				   eight-bit-control bytes written by
				   CCL_WRITE_CHAR.  After execution,
				   if no such byte is written, set
				   this value to zero.  */
};

/* This data type is used for the spec field of the structure
   coding_system.  */

struct ccl_spec {
  struct ccl_program decoder;
  struct ccl_program encoder;
  unsigned char valid_codes[256];
  int cr_carryover;		/* CR carryover flag.  */
  unsigned char eight_bit_carryover[MAX_MULTIBYTE_LENGTH];
};

/* Alist of fontname patterns vs corresponding CCL program.  */
extern Lisp_Object Vfont_ccl_encoder_alist;

/* Setup fields of the structure pointed by CCL appropriately for the
   execution of ccl program CCL_PROG (symbol or vector).  */
extern int setup_ccl_program P_ ((struct ccl_program *, Lisp_Object));

/* Check if CCL is updated or not.  If not, re-setup members of CCL.  */
extern int check_ccl_update P_ ((struct ccl_program *));

extern int ccl_driver P_ ((struct ccl_program *, unsigned char *,
			   unsigned char *, int, int, int *));

/* Vector of CCL program names vs corresponding program data.  */
extern Lisp_Object Vccl_program_table;

/* Symbols of ccl program have this property, a value of the property
   is an index for Vccl_protram_table. */
extern Lisp_Object Qccl_program_idx;

#endif /* EMACS_CCL_H */

/* arch-tag: 14681df7-876d-43de-bc71-6b78e23a4e3c
   (do not change this comment) */
Commit	Line	Data
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
369314dc KH	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
369314dc KH	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
369314dc KH	17	You should have received a copy of the GNU General Public License
369314dc KH	18	along with GNU Emacs; see the file COPYING. If not, write to
4fc5845f LK	19	the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
4fc5845f LK	20	Boston, MA 02110-1301, USA. */
4ed46869	21
265702b7 KH	22	#ifndef EMACS_CCL_H
265702b7 KH	23	#define EMACS_CCL_H
4ed46869	24
eacba247 KH	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
4ed46869 KH	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 {
7cf49add KH	36	int idx; /* Index number of the CCL program.
	37	-1 means that the program was given
	38	by a vector, not by a program
	39	name. */
4ed46869 KH	40	int size; /* Size of the compiled code. */
	41	Lisp_Object prog; / Pointer into the compiled code. */
	42	int ic; /* Instruction Counter (index for PROG). */
	43	int eof_ic; /* Instruction Counter for end-of-file
	44	processing code. */
	45	int reg[8]; /* CCL registers, reg[7] is used for
	46	condition flag of relational
	47	operations. */
eacba247	48	int private_state; /* CCL instruction may use this
975ddbf5 KH	49	for private use, mainly for saving
975ddbf5 KH	50	internal states on suspending.
177c0ea7	51	This variable is set to 0 when ccl is
eacba247	52	set up. */
4ed46869 KH	53	int last_block; /* Set to 1 while processing the last
	54	block. */
	55	int status; /* Exit status of the CCL program. */
	56	int buf_magnification; /* Output buffer magnification. How
	57	many times bigger the output buffer
	58	should be than the input buffer. */
e05645ee	59	int stack_idx; /* How deep the call of CCL_Call is nested. */
8538ed9a KH	60	int eol_type; /* When the CCL program is used for
8538ed9a KH	61	encoding by a coding system, set to
f455f068 KH	62	the eol_type of the coding system.
	63	In other cases, always
	64	CODING_EOL_LF. */
975ddbf5	65	int multibyte; /* 1 if the source text is multibyte. */
f455f068 KH	66	int cr_consumed; /* Flag for encoding DOS-like EOL
	67	format when the CCL program is used
	68	for encoding by a coding
	69	system. */
64068fbf KH	70	int suppress_error; /* If nonzero, don't insert error
64068fbf KH	71	message in the output. */
034060e4 KH	72	int eight_bit_control; /* If nonzero, ccl_driver counts all
	73	eight-bit-control bytes written by
	74	CCL_WRITE_CHAR. After execution,
	75	if no such byte is written, set
	76	this value to zero. */
4ed46869 KH	77	};
	78
	79	/* This data type is used for the spec field of the structure
	80	coding_system. */
	81
	82	struct ccl_spec {
	83	struct ccl_program decoder;
	84	struct ccl_program encoder;
a35fd731	85	unsigned char valid_codes[256];
8538ed9a	86	int cr_carryover; /* CR carryover flag. */
898f3312	87	unsigned char eight_bit_carryover[MAX_MULTIBYTE_LENGTH];
4ed46869 KH	88	};
	89
	90	/* Alist of fontname patterns vs corresponding CCL program. */
	91	extern Lisp_Object Vfont_ccl_encoder_alist;
	92
58068210	93	/* Setup fields of the structure pointed by CCL appropriately for the
e5e6d6fb KH	94	execution of ccl program CCL_PROG (symbol or vector). */
e5e6d6fb KH	95	extern int setup_ccl_program P_ ((struct ccl_program *, Lisp_Object));
58068210	96
7cf49add KH	97	/* Check if CCL is updated or not. If not, re-setup members of CCL. */
	98	extern int check_ccl_update P_ ((struct ccl_program *));
	99
58068210 AS	100	extern int ccl_driver P_ ((struct ccl_program , unsigned char ,
	101	unsigned char , int, int, int ));
	102
1cfae2bf KH	103	/* Vector of CCL program names vs corresponding program data. */
	104	extern Lisp_Object Vccl_program_table;
	105
	106	/* Symbols of ccl program have this property, a value of the property
	107	is an index for Vccl_protram_table. */
	108	extern Lisp_Object Qccl_program_idx;
	109
265702b7	110	#endif /* EMACS_CCL_H */
ab5796a9 MB	111
	112	/* arch-tag: 14681df7-876d-43de-bc71-6b78e23a4e3c
	113	(do not change this comment) */