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

/* Header for CCL (Code Conversion Language) interpreter.
   Copyright (C) 1995, 1998, 2000
     National Institute of Advanced Industrial Science and Technology (AIST)
     Registration Number H14PRO021
   Copyright (C) 2003
     National Institute of Advanced Industrial Science and Technology (AIST)
     Registration Number H13PRO009

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 src_multibyte;		/* 1 if the input buffer is multibyte.  */
  int dst_multibyte;		/* 1 if the output buffer 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 consumed;
  int produced;
  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 ccl;
  int cr_carryover;		/* CR carryover flag.  */
  unsigned char eight_bit_carryover[MAX_MULTIBYTE_LENGTH];
};

#define CODING_SPEC_CCL_PROGRAM(coding) ((coding)->spec.ccl.ccl)

/* 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 void ccl_driver P_ ((struct ccl_program *, int *, int *, int, int,
			    Lisp_Object));

/* 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;

extern Lisp_Object Qccl, Qcclp;

EXFUN (Fccl_program_p, 1);

#define CHECK_CCL_PROGRAM(x)			\
  do {						\
    if (NILP (Fccl_program_p (x)))		\
      x = wrong_type_argument (Qcclp, (x));	\
  } while (0);

#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.
ce03bf76 KH	2	Copyright (C) 1995, 1998, 2000
	3	National Institute of Advanced Industrial Science and Technology (AIST)
	4	Registration Number H14PRO021
8f924df7	5	Copyright (C) 2003
d2bc5a70 KH	6	National Institute of Advanced Industrial Science and Technology (AIST)
d2bc5a70 KH	7	Registration Number H13PRO009
4ed46869	8
369314dc KH	9	This file is part of GNU Emacs.
	10
	11	GNU Emacs is free software; you can redistribute it and/or modify
	12	it under the terms of the GNU General Public License as published by
	13	the Free Software Foundation; either version 2, or (at your option)
	14	any later version.
4ed46869	15
369314dc KH	16	GNU Emacs is distributed in the hope that it will be useful,
	17	but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	GNU General Public License for more details.
4ed46869	20
369314dc KH	21	You should have received a copy of the GNU General Public License
369314dc KH	22	along with GNU Emacs; see the file COPYING. If not, write to
4fc5845f LK	23	the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
4fc5845f LK	24	Boston, MA 02110-1301, USA. */
4ed46869	25
265702b7 KH	26	#ifndef EMACS_CCL_H
265702b7 KH	27	#define EMACS_CCL_H
4ed46869	28
eacba247 KH	29	/* Macros for exit status of CCL program. */
	30	#define CCL_STAT_SUCCESS 0 /* Terminated successfully. */
	31	#define CCL_STAT_SUSPEND_BY_SRC 1 /* Terminated by empty input. */
	32	#define CCL_STAT_SUSPEND_BY_DST 2 /* Terminated by output buffer full. */
	33	#define CCL_STAT_INVALID_CMD 3 /* Terminated because of invalid
	34	command. */
	35	#define CCL_STAT_QUIT 4 /* Terminated because of quit. */
	36
4ed46869 KH	37	/* Structure to hold information about running CCL code. Read
	38	comments in the file ccl.c for the detail of each field. */
	39	struct ccl_program {
7cf49add KH	40	int idx; /* Index number of the CCL program.
	41	-1 means that the program was given
	42	by a vector, not by a program
	43	name. */
4ed46869 KH	44	int size; /* Size of the compiled code. */
	45	Lisp_Object prog; / Pointer into the compiled code. */
	46	int ic; /* Instruction Counter (index for PROG). */
	47	int eof_ic; /* Instruction Counter for end-of-file
	48	processing code. */
	49	int reg[8]; /* CCL registers, reg[7] is used for
	50	condition flag of relational
	51	operations. */
eacba247	52	int private_state; /* CCL instruction may use this
975ddbf5 KH	53	for private use, mainly for saving
975ddbf5 KH	54	internal states on suspending.
177c0ea7	55	This variable is set to 0 when ccl is
eacba247	56	set up. */
4ed46869 KH	57	int last_block; /* Set to 1 while processing the last
	58	block. */
	59	int status; /* Exit status of the CCL program. */
	60	int buf_magnification; /* Output buffer magnification. How
	61	many times bigger the output buffer
	62	should be than the input buffer. */
e05645ee	63	int stack_idx; /* How deep the call of CCL_Call is nested. */
d2bc5a70 KH	64	int src_multibyte; /* 1 if the input buffer is multibyte. */
d2bc5a70 KH	65	int dst_multibyte; /* 1 if the output buffer 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. */
d2bc5a70 KH	70	int consumed;
d2bc5a70 KH	71	int produced;
64068fbf KH	72	int suppress_error; /* If nonzero, don't insert error
64068fbf KH	73	message in the output. */
034060e4 KH	74	int eight_bit_control; /* If nonzero, ccl_driver counts all
	75	eight-bit-control bytes written by
	76	CCL_WRITE_CHAR. After execution,
	77	if no such byte is written, set
	78	this value to zero. */
4ed46869 KH	79	};
	80
	81	/* This data type is used for the spec field of the structure
	82	coding_system. */
	83
	84	struct ccl_spec {
d2bc5a70	85	struct ccl_program ccl;
8538ed9a	86	int cr_carryover; /* CR carryover flag. */
898f3312	87	unsigned char eight_bit_carryover[MAX_MULTIBYTE_LENGTH];
4ed46869 KH	88	};
4ed46869 KH	89
d2bc5a70 KH	90	#define CODING_SPEC_CCL_PROGRAM(coding) ((coding)->spec.ccl.ccl)
d2bc5a70 KH	91
4ed46869 KH	92	/* Alist of fontname patterns vs corresponding CCL program. */
	93	extern Lisp_Object Vfont_ccl_encoder_alist;
	94
58068210	95	/* Setup fields of the structure pointed by CCL appropriately for the
e5e6d6fb KH	96	execution of ccl program CCL_PROG (symbol or vector). */
e5e6d6fb KH	97	extern int setup_ccl_program P_ ((struct ccl_program *, Lisp_Object));
58068210	98
7cf49add KH	99	/* Check if CCL is updated or not. If not, re-setup members of CCL. */
	100	extern int check_ccl_update P_ ((struct ccl_program *));
	101
5cac9fd6 KH	102	extern void ccl_driver P_ ((struct ccl_program , int , int *, int, int,
5cac9fd6 KH	103	Lisp_Object));
58068210	104
1cfae2bf KH	105	/* Vector of CCL program names vs corresponding program data. */
	106	extern Lisp_Object Vccl_program_table;
	107
	108	/* Symbols of ccl program have this property, a value of the property
	109	is an index for Vccl_protram_table. */
	110	extern Lisp_Object Qccl_program_idx;
	111
d2bc5a70 KH	112	extern Lisp_Object Qccl, Qcclp;
	113
	114	EXFUN (Fccl_program_p, 1);
	115
	116	#define CHECK_CCL_PROGRAM(x) \
	117	do { \
	118	if (NILP (Fccl_program_p (x))) \
	119	x = wrong_type_argument (Qcclp, (x)); \
	120	} while (0);
	121
265702b7	122	#endif /* EMACS_CCL_H */
6b61353c KH	123
	124	/* arch-tag: 14681df7-876d-43de-bc71-6b78e23a4e3c
	125	(do not change this comment) */