ltf_inner.h

T-kernel 的extension源代码

/*
 *----------------------------------------------------------------------
 *    T-Kernel / Standard Extension
 *
 *    Copyright (C) 2006 by Ken Sakamura. All rights reserved.
 *    T-Kernel / Standard Extension is distributed 
 *      under the T-License for T-Kernel / Standard Extension.
 *----------------------------------------------------------------------
 *
 *    Version:   1.00.00
 *    Released by T-Engine Forum(http://www.t-engine.org) at 2006/8/11.
 *
 *----------------------------------------------------------------------
 */

/*
 *	ltf_inner.h (seio)
 *
 *	Standard input/output
 *	Local tf library
 */
/* ------------------------------------------------------------ */
#ifndef __TFCODER_H__
#define __TFCODER_H__


/* ID type */
#define TF_ID_TYPE_MASK                 0x1f000000

struct xssrc{
	UB *pubCurSrc;				/* Pointer to characters to be converted */
	W  wSrcLen;				/* Size of characters to be converted */
	
	UB pubBuf[4];				/* Buffer for remaining previous characters */
	W  wStoredLen;				/* Size of remaining previous characters */
	W  wWantLen;				/* Shortage of remaining previous characters */

	W  wSrcP;				/* Position for starting conversion */

	TC ptcBuf[ 8];				/* Converted TC character buffer */
	W  wStoredTCLen;				/* Recorded size of converted TC character buffer */
	W  wStoredTCP;				/* Start position for copying converted TC character buffer */
};


struct tcsrc{
	const TC *ptcCurSrc;			/* Start of character string to be converted */
	W wSrcEnd;				/* End of character string to be converted */
	W wSrcP;				/* Position for starting conversion */
	W wSegSize;				/* Segment size */
	W wRCnt;				/* Counter for loading character scale-up/down specification tags */
	W wTCState;				/* State of current position */
	TC tcEsc;				/* TRON escape code */
};

union srcs{
	struct xssrc xs;
	struct tcsrc tcs;
};

#define TF_NOTRUN	0
#define TF_RUN		1
#define TF_ZEN		0
#define TF_HAN		2
#define TF_IGNORE	4
#define TF_CONTINUE	8
#define TF_SUPPR	0x10

#define IS_TF_RUN(x)		(((x)->wState) & (TF_RUN))
#define SET_TF_RUN(x)		(((x)->wState) |= (TF_RUN))
#define SET_TF_NOTRUN(x)	(((x)->wState) &= ~(UW)(TF_RUN))

#define IS_TFZEN(x)		(((x) & (TF_HAN)) == 0)
#define IS_TFHAN(x)		((x) & (TF_HAN))
#define IS_TFIGNO(x)		((x) & (TF_IGNORE))
#define IS_TFCONT(x)		((x) & (TF_CONTINUE))
#define IS_TFSUPPR(x)		((x) & (TF_SUPPR))

#define SET_TFZEN(x)		((x) &= ~(TF_HAN))
#define SET_TFHAN(x)		((x) |= (TF_HAN))
#define SET_TFNIGNO(x)		((x) &= ~(TF_IGNORE))
#define SET_TFIGNO(x)		((x) |= (TF_IGNORE))
#define SET_TFNCONT(x)		((x) &= ~(TF_CONTINUE))
#define SET_TFCONT(x)		((x) |= (TF_CONTINUE))
#define SET_TFNSUPPR(x)		((x) &= ~(TF_SUPPR))
#define SET_TFSUPPR(x)		((x) |= (TF_SUPPR))

#define TF_TC_TC		0
#define TF_TC_NO_OR_LAR		1
#define TF_TC_LAR0		2
#define TF_TC_LAR1		3
#define TF_TC_SKIP		4
#define TF_TC_NORM		5
#define TF_TC_SUBID		6
#define TF_TC_RATIO		7

#define SET_TF_TC_TC(a)		((a)->srcs.tcs.wTCState = (TF_TC_TC))
#define SET_TF_TC_NO_OR_LAR(a)	((a)->srcs.tcs.wTCState = (TF_TC_NO_OR_LAR))
#define SET_TF_TC_LAR0(a)	((a)->srcs.tcs.wTCState = (TF_TC_LAR0))
#define SET_TF_TC_LAR1(a)	((a)->srcs.tcs.wTCState = (TF_TC_LAR1))
#define SET_TF_TC_SKIP(a)	((a)->srcs.tcs.wTCState = (TF_TC_SKIP))
#define SET_TF_TC_NORM(a)	((a)->srcs.tcs.wTCState = (TF_TC_NORM))
#define SET_TF_TC_SUBID(a)	((a)->srcs.tcs.wTCState = (TF_TC_SUBID))
#define SET_TF_TC_RATIO(a)	((a)->srcs.tcs.wTCState = (TF_TC_RATIO))

struct tf_ctx {
	union srcs srcs;
	W wState;
	TLANG	uhLang;				/* Language specification code */

	W (*chgfunc)();				/* Conversion function */
	W (*isEnd)();				/* End: TRUE */
	/* Subsequent options are based on UB. */
	UB ubX2TUndefChar;			/* Support for X2T undefined characters */
	UB ubT2XUnsupChar;			/* Support for character set that cannot be converted into T2X */
};


#endif /* !__TFCODER_H__ */