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      1 /*	$NetBSD: cut.h,v 1.4 2017/11/13 01:40:37 rin Exp $ */
      2 /*-
      3  * Copyright (c) 1991, 1993, 1994
      4  *	The Regents of the University of California.  All rights reserved.
      5  * Copyright (c) 1991, 1993, 1994, 1995, 1996
      6  *	Keith Bostic.  All rights reserved.
      7  *
      8  * See the LICENSE file for redistribution information.
      9  *
     10  *	Id: cut.h,v 10.9 2000/07/22 17:31:18 skimo Exp  (Berkeley) Date: 2000/07/22 17:31:18
     11  */
     12 
     13 typedef struct _texth TEXTH;		/* TEXT list head structure. */
     14 TAILQ_HEAD(_texth, _text);
     15 
     16 /* Cut buffers. */
     17 struct _cb {
     18 	LIST_ENTRY(_cb) q;		/* Linked list of cut buffers. */
     19 	TEXTH	 textq;			/* Linked list of TEXT structures. */
     20 	/* XXXX Needed ? Can non ascii-chars be cut buffer names ? */
     21 	ARG_CHAR_T name;		/* Cut buffer name. */
     22 	size_t	 len;			/* Total length of cut text. */
     23 
     24 #define	CB_LMODE	0x01		/* Cut was in line mode. */
     25 	u_int8_t flags;
     26 };
     27 
     28 /* Lines/blocks of text. */
     29 struct _text {				/* Text: a linked list of lines. */
     30 	TAILQ_ENTRY(_text) q;		/* Linked list of text structures. */
     31 	CHAR_T	*lb;			/* Line buffer. */
     32 	size_t	 lb_len;		/* Line buffer length. */
     33 	size_t	 len;			/* Line length. */
     34 
     35 	/* These fields are used by the vi text input routine. */
     36 	db_recno_t	 lno;			/* 1-N: file line. */
     37 	size_t	 cno;			/* 0-N: file character in line. */
     38 	size_t	 ai;			/* 0-N: autoindent bytes. */
     39 	size_t	 insert;		/* 0-N: bytes to insert (push). */
     40 	size_t	 offset;		/* 0-N: initial, unerasable chars. */
     41 	size_t	 owrite;		/* 0-N: chars to overwrite. */
     42 	size_t	 R_erase;		/* 0-N: 'R' erase count. */
     43 	size_t	 sv_cno;		/* 0-N: Saved line cursor. */
     44 	size_t	 sv_len;		/* 0-N: Saved line length. */
     45 
     46 	/*
     47 	 * These fields returns information from the vi text input routine.
     48 	 *
     49 	 * The termination condition.  Note, this field is only valid if the
     50 	 * text input routine returns success.
     51 	 *	TERM_BS:	User backspaced over the prompt.
     52 	 *	TERM_CEDIT:	User entered <edit-char>.
     53 	 *	TERM_CR:	User entered <carriage-return>; no data.
     54 	 *	TERM_ESC:	User entered <escape>; no data.
     55 	 *	TERM_OK:	Data available.
     56 	 *	TERM_SEARCH:	Incremental search.
     57 	 */
     58 	enum {
     59 	    TERM_BS, TERM_CEDIT, TERM_CR, TERM_ESC, TERM_OK, TERM_SEARCH
     60 	} term;
     61 };
     62 
     63 /*
     64  * Get named buffer 'name'.
     65  * Translate upper-case buffer names to lower-case buffer names.
     66  */
     67 #define	CBNAME(sp, cbp, nch) {						\
     68 	ARG_CHAR_T L__name;						\
     69 	L__name = ISUPPER((UCHAR_T)nch) ? TOLOWER((UCHAR_T)nch) : (nch);\
     70 	for (cbp = sp->wp->cutq.lh_first;				\
     71 	    cbp != NULL; cbp = cbp->q.le_next)				\
     72 		if (cbp->name == L__name)				\
     73 			break;						\
     74 }
     75 
     76 /* Flags to the cut() routine. */
     77 #define	CUT_LINEMODE	0x01		/* Cut in line mode. */
     78 #define	CUT_NUMOPT	0x02		/* Numeric buffer: optional. */
     79 #define	CUT_NUMREQ	0x04		/* Numeric buffer: required. */
     80