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-/*
- * This code contains changes by
- *      Gunnar Ritter, Freiburg i. Br., Germany, 2002. All rights reserved.
- *
- * Conditions 1, 2, and 4 and the no-warranty notice below apply
- * to these changes.
- *
- *
- * Copyright (c) 1980, 1993
- * 	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- * 	This product includes software developed by the University of
- * 	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *
- * Copyright(C) Caldera International Inc. 2001-2002. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *   Redistributions of source code and documentation must retain the
- *    above copyright notice, this list of conditions and the following
- *    disclaimer.
- *   Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *   All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *      This product includes software developed or owned by Caldera
- *      International, Inc.
- *   Neither the name of Caldera International, Inc. nor the names of
- *    other contributors may be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * USE OF THE SOFTWARE PROVIDED FOR UNDER THIS LICENSE BY CALDERA
- * INTERNATIONAL, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL CALDERA INTERNATIONAL, INC. BE
- * LIABLE FOR ANY DIRECT, INDIRECT INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
- * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *	from ex_temp.h	7.4 (Berkeley) 5/31/85
- *
- *	Sccsid @(#)ex_temp.h	1.10 (gritter) 8/4/05
- */
-
-/*
- * The editor uses a temporary file for files being edited, in a structure
- * similar to that of ed.  The first block of the file is used for a header
- * block which guides recovery after editor/system crashes.
- * Lines are represented in core by a pointer into the temporary file which
- * is packed into 16 bits (32 on VMUNIX).  All but the low bit index the temp
- * file; the last is used by global commands.  The parameters below control
- * how much the other bits are shifted left before they index the temp file.
- * Larger shifts give more slop in the temp file but allow larger files
- * to be edited.
- *
- * The editor does not garbage collect the temporary file.  When a new
- * file is edited, the temporary file is rather discarded and a new one
- * created for the new file.  Garbage collection would be rather complicated
- * in ex because of the general undo, and in any case would require more
- * work when throwing lines away because marks would have be carefully
- * checked before reallocating temporary file space.  Said another way,
- * each time you create a new line in the temporary file you get a unique
- * number back, and this is a property used by marks.
- *
- * The following temp file parameters allow 256k bytes in the temporary
- * file.  By changing to the numbers in comments you can get 512k.
- * For VMUNIX you get more than you could ever want.
- * VMUNIX uses long (32 bit) integers giving much more
- * space in the temp file and no waste.  This doubles core
- * requirements but allows files of essentially unlimited size to be edited.
- */
-#ifndef VMUNIX
-#define	BLKMSK	0777		/* 01777 */
-#define	BNDRY	8		/* 16 */
-#define	INCRMT	0200		/* 0100 */
-#define	LBTMSK	0770		/* 0760 */
-#define	NMBLKS	506		/* 1018 */
-#define	OFFBTS	7		/* 6 */
-#define	OFFMSK	0177		/* 077 */
-#define	SHFT	2		/* 3 */
-#define	TLNMSK	077776
-#else	/* VMUNIX */
-#ifdef	LARGEF
-#define	BLKMSK	017777777777
-#else
-#define	BLKMSK	077777
-#endif
-#define	BNDRY	2
-#define	INCRMT	02000
-#define	LBTMSK	01776
-#ifdef	LARGEF
-#define	NMBLKS	017777777770
-#else
-#define	NMBLKS	077770
-#endif
-#define	OFFBTS	10
-#define	OFFMSK	01777
-#define	SHFT	0
-#define	TLNMSK	017777777776
-#endif	/* VMUNIX */
-
-/*
- * The editor uses three buffers into the temporary file (ed uses two
- * and is very similar).  These are two read buffers and one write buffer.
- * Basically, the editor deals with the file as a sequence of BUFSIZ character
- * blocks.  Each block contains some number of lines (and lines
- * can run across block boundaries.
- *
- * New lines are written into the last block in the temporary file
- * which is in core as obuf.  When a line is needed which isn't in obuf,
- * then it is brought into an input buffer.  As there are two, the choice
- * is to take the buffer into which the last read (of the two) didn't go.
- * Thus this is a 2 buffer LRU replacement strategy.  Measurement
- * shows that this saves roughly 25% of the buffer reads over a one
- * input buffer strategy.  Since the editor (on our VAX over 1 week)
- * spends (spent) roughly 30% of its time in the system read routine,
- * this can be a big help.
- */
-var bool	hitin2;		/* Last read hit was ibuff2 not ibuff */
-var bool	ichang2;	/* Have actually changed ibuff2 */
-var bool	ichanged;	/* Have actually changed ibuff */
-var bloc	iblock;		/* Temp file block number of ibuff (or -1) */
-var bloc	iblock2;	/* Temp file block number of ibuff2 (or -1) */
-var bloc	ninbuf;		/* Number useful chars left in input buffer */
-var bloc	nleft;		/* Number usable chars left in output buffer */
-var bloc	oblock;		/* Temp file block number of obuff (or -1) */
-var bbloc	tline;		/* Current temp file ptr */
-
-var char	ibuff[BUFSIZ];
-var char	ibuff2[BUFSIZ];
-var char	obuff[BUFSIZ];
-
-/*
- * Structure of the descriptor block which resides
- * in the first block of the temporary file and is
- * the guiding light for crash recovery.
- *
- * As the Blocks field below implies, there are temporary file blocks
- * devoted to (some) image of the incore array of pointers into the temp
- * file.  Thus, to recover from a crash we use these indices to get the
- * line pointers back, and then use the line pointers to get the text back.
- * Except for possible lost lines due to sandbagged I/O, the entire
- * file (at the time of the last editor "sync") can be recovered from
- * the temp file.
- */
-
-/* This definition also appears in expreserve.c... beware */
-struct 	header {
-	time_t	Time;			/* Time temp file last updated */
-	uid_t	Uid;
-	bbloc	Flines;			/* Number of lines in file */
-	char	Savedfile[FNSIZE];	/* The current file name */
-	bloc	Blocks[LBLKS];		/* Blocks where line pointers stashed */
-}; 
-var struct 	header H;
-
-#define	uid		H.Uid
-#define	flines		H.Flines
-#define	savedfile	H.Savedfile
-#define	blocks		H.Blocks