Usenet 1994 October/usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso/misc/volume1/8706/23

Internet Message Format | 1993-09-02 | 62KB

From mipos3!intelca!uccba!hal!ncoast!allbery Fri Jun 19 14:07:40 PDT 1987
Article 16 of comp.sources.misc:
Path: td2cad!mipos3!intelca!uccba!hal!ncoast!allbery
>From: [e-mail] (William E. Davidsen Jr)
Newsgroups: comp.sources.misc
Subject: memacs 3.8i 11 of 11
Message-ID: <[e-mail]>
Date: 15 Jun 87 19:12:51 GMT
Sender: [e-mail]
Lines: 2186
Approved: [e-mail]
X-Archive: comp.sources.misc/8706/23

:
#!/bin/sh
# shar+ created from directory /usr2/davidsen/emacs38i
# 13:42 on Thu Jun 11, 1987 by davidsen
echo 'x - window.c (text)'
sed << 'E!O!F' 's/^X//' > window.c
X/*
X * Window management. Some of the functions are internal, and some are
X * attached to keys that the user actually types.
X */
X
X#include        <stdio.h>
X#include        "estruct.h"
X#include    "edef.h"
X
X#if    MEGAMAX & ST520
Xoverlay    "window"
X#endif
X
X/*
X * Reposition dot in the current window to line "n". If the argument is
X * positive, it is that line. If it is negative it is that line from the
X * bottom. If it is 0 the window is centered (this is what the standard
X * redisplay code does). With no argument it defaults to 0. Bound to M-!.
X */
Xreposition(f, n)
X    {
X    if (f == FALSE)    /* default to 0 to center screen */
X    n = 0;
X    curwp->w_force = n;
X    curwp->w_flag |= WFFORCE;
X    return (TRUE);
X    }
X
X/*
X * Refresh the screen. With no argument, it just does the refresh. With an
X * argument it recenters "." in the current window. Bound to "C-L".
X */
Xrefresh(f, n)
X    {
X    if (f == FALSE)
X        sgarbf = TRUE;
X    else
X        {
X        curwp->w_force = 0;             /* Center dot. */
X        curwp->w_flag |= WFFORCE;
X        }
X
X    return (TRUE);
X    }
X
X/*
X * The command make the next window (next => down the screen) the current
X * window. There are no real errors, although the command does nothing if
X * there is only 1 window on the screen. Bound to "C-X C-N".
X *
X * with an argument this command finds the <n>th window from the top
X *
X */
Xnextwind(f, n)
X
Xint f, n;    /* default flag and numeric argument */
X
X{
X    register WINDOW *wp;
X    register int nwindows;        /* total number of windows */
X
X    if (f) {
X
X        /* first count the # of windows */
X        wp = wheadp;
X        nwindows = 1;
X        while (wp->w_wndp != NULL) {
X            nwindows++;
X            wp = wp->w_wndp;
X        }
X
X        /* if the argument is negative, it is the nth window
X           from the bottom of the screen            */
X        if (n < 0)
X            n = nwindows + n + 1;
X
X        /* if an argument, give them that window from the top */
X        if (n > 0 && n <= nwindows) {
X            wp = wheadp;
X            while (--n)
X                wp = wp->w_wndp;
X        } else {
X            mlwrite("Window number out of range");
X            return(FALSE);
X        }
X    } else
X        if ((wp = curwp->w_wndp) == NULL)
X            wp = wheadp;
X    curwp = wp;
X    curbp = wp->w_bufp;
X    upmode();
X    return (TRUE);
X}
X
X/*
X * This command makes the previous window (previous => up the screen) the
X * current window. There arn't any errors, although the command does not do a
X * lot if there is 1 window.
X */
Xprevwind(f, n)
X{
X    register WINDOW *wp1;
X    register WINDOW *wp2;
X
X    /* if we have an argument, we mean the nth window from the bottom */
X    if (f)
X        return(nextwind(f, -n));
X
X    wp1 = wheadp;
X    wp2 = curwp;
X
X    if (wp1 == wp2)
X        wp2 = NULL;
X
X    while (wp1->w_wndp != wp2)
X        wp1 = wp1->w_wndp;
X
X    curwp = wp1;
X    curbp = wp1->w_bufp;
X    upmode();
X    return (TRUE);
X}
X
X/*
X * This command moves the current window down by "arg" lines. Recompute the
X * top line in the window. The move up and move down code is almost completely
X * the same; most of the work has to do with reframing the window, and picking
X * a new dot. We share the code by having "move down" just be an interface to
X * "move up". Magic. Bound to "C-X C-N".
X */
Xmvdnwind(f, n)
X
Xint n;
X
X{
X    return (mvupwind(f, -n));
X}
X
X/*
X * Move the current window up by "arg" lines. Recompute the new top line of
X * the window. Look to see if "." is still on the screen. If it is, you win.
X * If it isn't, then move "." to center it in the new framing of the window
X * (this command does not really move "."; it moves the frame). Bound to
X * "C-X C-P".
X */
Xmvupwind(f, n)
X    int n;
X    {
X    register LINE *lp;
X    register int i;
X
X    lp = curwp->w_linep;
X
X    if (n < 0)
X        {
X        while (n++ && lp!=curbp->b_linep)
X            lp = lforw(lp);
X        }
X    else
X        {
X        while (n-- && lback(lp)!=curbp->b_linep)
X            lp = lback(lp);
X        }
X
X    curwp->w_linep = lp;
X    curwp->w_flag |= WFHARD;            /* Mode line is OK. */
X
X    for (i = 0; i < curwp->w_ntrows; ++i)
X        {
X        if (lp == curwp->w_dotp)
X            return (TRUE);
X        if (lp == curbp->b_linep)
X            break;
X        lp = lforw(lp);
X        }
X
X    lp = curwp->w_linep;
X    i  = curwp->w_ntrows/2;
X
X    while (i-- && lp != curbp->b_linep)
X        lp = lforw(lp);
X
X    curwp->w_dotp  = lp;
X    curwp->w_doto  = 0;
X    return (TRUE);
X    }
X
X/*
X * This command makes the current window the only window on the screen. Bound
X * to "C-X 1". Try to set the framing so that "." does not have to move on the
X * display. Some care has to be taken to keep the values of dot and mark in
X * the buffer structures right if the distruction of a window makes a buffer
X * become undisplayed.
X */
Xonlywind(f, n)
X{
X        register WINDOW *wp;
X        register LINE   *lp;
X        register int    i;
X
X        while (wheadp != curwp) {
X                wp = wheadp;
X                wheadp = wp->w_wndp;
X                if (--wp->w_bufp->b_nwnd == 0) {
X                        wp->w_bufp->b_dotp  = wp->w_dotp;
X                        wp->w_bufp->b_doto  = wp->w_doto;
X                        wp->w_bufp->b_markp = wp->w_markp;
X                        wp->w_bufp->b_marko = wp->w_marko;
X                }
X                free((char *) wp);
X        }
X        while (curwp->w_wndp != NULL) {
X                wp = curwp->w_wndp;
X                curwp->w_wndp = wp->w_wndp;
X                if (--wp->w_bufp->b_nwnd == 0) {
X                        wp->w_bufp->b_dotp  = wp->w_dotp;
X                        wp->w_bufp->b_doto  = wp->w_doto;
X                        wp->w_bufp->b_markp = wp->w_markp;
X                        wp->w_bufp->b_marko = wp->w_marko;
X                }
X                free((char *) wp);
X        }
X        lp = curwp->w_linep;
X        i  = curwp->w_toprow;
X        while (i!=0 && lback(lp)!=curbp->b_linep) {
X                --i;
X                lp = lback(lp);
X        }
X        curwp->w_toprow = 0;
X        curwp->w_ntrows = term.t_nrow-1;
X        curwp->w_linep  = lp;
X        curwp->w_flag  |= WFMODE|WFHARD;
X        return (TRUE);
X}
X
X/*
X * Delete the current window, placing its space in the window above,
X * or, if it is the top window, the window below. Bound to C-X 0.
X */
X
Xdelwind(f,n)
X
Xint f, n;    /* arguments are ignored for this command */
X
X{
X    register WINDOW *wp;    /* window to recieve deleted space */
X    register WINDOW *lwp;    /* ptr window before curwp */
X    register int target;    /* target line to search for */
X
X    /* if there is only one window, don't delete it */
X    if (wheadp->w_wndp == NULL) {
X        mlwrite("Can not delete this window");
X        return(FALSE);
X    }
X
X    /* find window before curwp in linked list */
X    wp = wheadp;
X    lwp = NULL;
X    while (wp != NULL) {
X        if (wp == curwp)
X            break;
X        lwp = wp;
X        wp = wp->w_wndp;
X    }
X
X    /* find recieving window and give up our space */
X    wp = wheadp;
X    if (curwp->w_toprow == 0) {
X        /* find the next window down */
X        target = curwp->w_ntrows + 1;
X        while (wp != NULL) {
X            if (wp->w_toprow == target)
X                break;
X            wp = wp->w_wndp;
X        }
X        if (wp == NULL)
X            return(FALSE);
X        wp->w_toprow = 0;
X        wp->w_ntrows += target;
X    } else {
X        /* find the next window up */
X        target = curwp->w_toprow - 1;
X        while (wp != NULL) {
X            if ((wp->w_toprow + wp->w_ntrows) == target)
X                break;
X            wp = wp->w_wndp;
X        }
X        if (wp == NULL)
X            return(FALSE);
X        wp->w_ntrows += 1 + curwp->w_ntrows;
X    }
X
X    /* get rid of the current window */
X    if (--curwp->w_bufp->b_nwnd == 0) {
X        curwp->w_bufp->b_dotp = curwp->w_dotp;
X        curwp->w_bufp->b_doto = curwp->w_doto;
X        curwp->w_bufp->b_markp = curwp->w_markp;
X        curwp->w_bufp->b_marko = curwp->w_marko;
X    }
X    if (lwp == NULL)
X        wheadp = curwp->w_wndp;
X    else
X        lwp->w_wndp = curwp->w_wndp;
X    free((char *)curwp);
X    curwp = wp;
X    wp->w_flag |= WFHARD;
X    curbp = wp->w_bufp;
X    upmode();
X    return(TRUE);
X}
X
X/*
X
XSplit the current window.  A window smaller than 3 lines cannot be
Xsplit.  An argument of 1 forces the cursor into the upper window, an
Xargument of two forces the cursor to the lower window.  The only other
Xerror that is possible is a "malloc" failure allocating the structure
Xfor the new window.  Bound to "C-X 2".
X
X */
Xsplitwind(f, n)
X
Xint f, n;    /* default flag and numeric argument */
X
X{
X        register WINDOW *wp;
X        register LINE   *lp;
X        register int    ntru;
X        register int    ntrl;
X        register int    ntrd;
X        register WINDOW *wp1;
X        register WINDOW *wp2;
X    char *malloc();
X
X        if (curwp->w_ntrows < 3) {
X                mlwrite("Cannot split a %d line window", curwp->w_ntrows);
X                return (FALSE);
X        }
X        if ((wp = (WINDOW *) malloc(sizeof(WINDOW))) == NULL) {
X                mlwrite("Cannot allocate WINDOW block");
X                return (FALSE);
X        }
X        ++curbp->b_nwnd;                        /* Displayed twice.     */
X        wp->w_bufp  = curbp;
X        wp->w_dotp  = curwp->w_dotp;
X        wp->w_doto  = curwp->w_doto;
X        wp->w_markp = curwp->w_markp;
X        wp->w_marko = curwp->w_marko;
X        wp->w_flag  = 0;
X        wp->w_force = 0;
X#if    COLOR
X    /* set the colors of the new window */
X    wp->w_fcolor = gfcolor;
X    wp->w_bcolor = gbcolor;
X#endif
X        ntru = (curwp->w_ntrows-1) / 2;         /* Upper size           */
X        ntrl = (curwp->w_ntrows-1) - ntru;      /* Lower size           */
X        lp = curwp->w_linep;
X        ntrd = 0;
X        while (lp != curwp->w_dotp) {
X                ++ntrd;
X                lp = lforw(lp);
X        }
X        lp = curwp->w_linep;
X        if (((f == FALSE) && (ntrd <= ntru)) || ((f == TRUE) && (n == 1))) {
X                /* Old is upper window. */
X                if (ntrd == ntru)               /* Hit mode line.       */
X                        lp = lforw(lp);
X                curwp->w_ntrows = ntru;
X                wp->w_wndp = curwp->w_wndp;
X                curwp->w_wndp = wp;
X                wp->w_toprow = curwp->w_toprow+ntru+1;
X                wp->w_ntrows = ntrl;
X        } else {                                /* Old is lower window  */
X                wp1 = NULL;
X                wp2 = wheadp;
X                while (wp2 != curwp) {
X                        wp1 = wp2;
X                        wp2 = wp2->w_wndp;
X                }
X                if (wp1 == NULL)
X                        wheadp = wp;
X                else
X                        wp1->w_wndp = wp;
X                wp->w_wndp   = curwp;
X                wp->w_toprow = curwp->w_toprow;
X                wp->w_ntrows = ntru;
X                ++ntru;                         /* Mode line.           */
X                curwp->w_toprow += ntru;
X                curwp->w_ntrows  = ntrl;
X                while (ntru--)
X                        lp = lforw(lp);
X        }
X        curwp->w_linep = lp;                    /* Adjust the top lines */
X        wp->w_linep = lp;                       /* if necessary.        */
X        curwp->w_flag |= WFMODE|WFHARD;
X        wp->w_flag |= WFMODE|WFHARD;
X        return (TRUE);
X}
X
X/*
X * Enlarge the current window. Find the window that loses space. Make sure it
X * is big enough. If so, hack the window descriptions, and ask redisplay to do
X * all the hard work. You don't just set "force reframe" because dot would
X * move. Bound to "C-X Z".
X */
Xenlargewind(f, n)
X{
X        register WINDOW *adjwp;
X        register LINE   *lp;
X        register int    i;
X
X        if (n < 0)
X                return (shrinkwind(f, -n));
X        if (wheadp->w_wndp == NULL) {
X                mlwrite("Only one window");
X                return (FALSE);
X        }
X        if ((adjwp=curwp->w_wndp) == NULL) {
X                adjwp = wheadp;
X                while (adjwp->w_wndp != curwp)
X                        adjwp = adjwp->w_wndp;
X        }
X        if (adjwp->w_ntrows <= n) {
X                mlwrite("Impossible change");
X                return (FALSE);
X        }
X        if (curwp->w_wndp == adjwp) {           /* Shrink below.        */
X                lp = adjwp->w_linep;
X                for (i=0; i<n && lp!=adjwp->w_bufp->b_linep; ++i)
X                        lp = lforw(lp);
X                adjwp->w_linep  = lp;
X                adjwp->w_toprow += n;
X        } else {                                /* Shrink above.        */
X                lp = curwp->w_linep;
X                for (i=0; i<n && lback(lp)!=curbp->b_linep; ++i)
X                        lp = lback(lp);
X                curwp->w_linep  = lp;
X                curwp->w_toprow -= n;
X        }
X        curwp->w_ntrows += n;
X        adjwp->w_ntrows -= n;
X        curwp->w_flag |= WFMODE|WFHARD;
X        adjwp->w_flag |= WFMODE|WFHARD;
X        return (TRUE);
X}
X
X/*
X * Shrink the current window. Find the window that gains space. Hack at the
X * window descriptions. Ask the redisplay to do all the hard work. Bound to
X * "C-X C-Z".
X */
Xshrinkwind(f, n)
X{
X        register WINDOW *adjwp;
X        register LINE   *lp;
X        register int    i;
X
X        if (n < 0)
X                return (enlargewind(f, -n));
X        if (wheadp->w_wndp == NULL) {
X                mlwrite("Only one window");
X                return (FALSE);
X        }
X        if ((adjwp=curwp->w_wndp) == NULL) {
X                adjwp = wheadp;
X                while (adjwp->w_wndp != curwp)
X                        adjwp = adjwp->w_wndp;
X        }
X        if (curwp->w_ntrows <= n) {
X                mlwrite("Impossible change");
X                return (FALSE);
X        }
X        if (curwp->w_wndp == adjwp) {           /* Grow below.          */
X                lp = adjwp->w_linep;
X                for (i=0; i<n && lback(lp)!=adjwp->w_bufp->b_linep; ++i)
X                        lp = lback(lp);
X                adjwp->w_linep  = lp;
X                adjwp->w_toprow -= n;
X        } else {                                /* Grow above.          */
X                lp = curwp->w_linep;
X                for (i=0; i<n && lp!=curbp->b_linep; ++i)
X                        lp = lforw(lp);
X                curwp->w_linep  = lp;
X                curwp->w_toprow += n;
X        }
X        curwp->w_ntrows -= n;
X        adjwp->w_ntrows += n;
X        curwp->w_flag |= WFMODE|WFHARD;
X        adjwp->w_flag |= WFMODE|WFHARD;
X        return (TRUE);
X}
X
X/*    Resize the current window to the requested size    */
X
Xresize(f, n)
X
Xint f, n;    /* default flag and numeric argument */
X
X{
X    int clines;    /* current # of lines in window */
X
X    /* must have a non-default argument, else ignore call */
X    if (f == FALSE)
X        return(TRUE);
X
X    /* find out what to do */
X    clines = curwp->w_ntrows;
X
X    /* already the right size? */
X    if (clines == n)
X        return(TRUE);
X
X    return(enlargewind(TRUE, n - clines));
X}
X
X/*
X * Pick a window for a pop-up. Split the screen if there is only one window.
X * Pick the uppermost window that isn't the current window. An LRU algorithm
X * might be better. Return a pointer, or NULL on error.
X */
XWINDOW  *
Xwpopup()
X{
X        register WINDOW *wp;
X
X        if (wheadp->w_wndp == NULL              /* Only 1 window        */
X        && splitwind(FALSE, 0) == FALSE)        /* and it won't split   */
X                return (NULL);
X        wp = wheadp;                            /* Find window to use   */
X        while (wp!=NULL && wp==curwp)
X                wp = wp->w_wndp;
X        return (wp);
X}
X
Xscrnextup(f, n)        /* scroll the next window up (back) a page */
X
X{
X    nextwind(FALSE, 1);
X    backpage(f, n);
X    prevwind(FALSE, 1);
X}
X
Xscrnextdw(f, n)        /* scroll the next window down (forward) a page */
X
X{
X    nextwind(FALSE, 1);
X    forwpage(f, n);
X    prevwind(FALSE, 1);
X}
X
Xsavewnd(f, n)        /* save ptr to current window */
X
X{
X    swindow = curwp;
X    return(TRUE);
X}
X
Xrestwnd(f, n)        /* restore the saved screen */
X
X{
X    register WINDOW *wp;
X
X    /* find the window */
X    wp = wheadp;
X    while (wp != NULL) {
X        if (wp == swindow) {
X            curwp = wp;
X            curbp = wp->w_bufp;
X            upmode();
X            return (TRUE);
X        }
X        wp = wp->w_wndp;
X    }
X
X    mlwrite("[No such window exists]");
X    return(FALSE);
X}
X
Xnewsize(f, n)    /* resize the screen, re-writing the screen */
X
Xint f;    /* default flag */
Xint n;    /* numeric argument */
X
X{
X    WINDOW *wp;    /* current window being examined */
X    WINDOW *nextwp;    /* next window to scan */
X    WINDOW *lastwp;    /* last window scanned */
X    int lastline;    /* screen line of last line of current window */
X
X    /* if the command defaults, assume the largest */
X    if (f == FALSE)
X        n = term.t_mrow + 1;
X
X    /* make sure it's in range */
X    if (n < 3 || n > term.t_mrow + 1) {
X        mlwrite("%%Screen size out of range");
X        return(FALSE);
X    }
X
X    if (term.t_nrow == n - 1)
X        return(TRUE);
X    else if (term.t_nrow < n - 1) {
X
X        /* go to the last window */
X        wp = wheadp;
X        while (wp->w_wndp != NULL)
X            wp = wp->w_wndp;
X
X        /* and enlarge it as needed */
X        wp->w_ntrows = n - wp->w_toprow - 2;
X        wp->w_flag |= WFHARD|WFMODE;
X
X    } else {
X
X        /* rebuild the window structure */
X        nextwp = wheadp;
X        wp = NULL;
X        lastwp = NULL;
X        while (nextwp != NULL) {
X            wp = nextwp;
X            nextwp = wp->w_wndp;
X
X            /* get rid of it if it is too low */
X            if (wp->w_toprow > n - 2) {
X
X                /* save the point/mark if needed */
X                if (--wp->w_bufp->b_nwnd == 0) {
X                    wp->w_bufp->b_dotp = wp->w_dotp;
X                    wp->w_bufp->b_doto = wp->w_doto;
X                    wp->w_bufp->b_markp = wp->w_markp;
X                    wp->w_bufp->b_marko = wp->w_marko;
X                }
X
X                /* update curwp and lastwp if needed */
X                if (wp == curwp)
X                    curwp = wheadp;
X                    curbp = curwp->w_bufp;
X                if (lastwp != NULL)
X                    lastwp->w_wndp = NULL;
X
X                /* free the structure */
X                free((char *)wp);
X                wp = NULL;
X
X            } else {
X                /* need to change this window size? */
X                lastline = wp->w_toprow + wp->w_ntrows - 1;
X                if (lastline >= n - 2) {
X                    wp->w_ntrows = n - wp->w_toprow - 2;
X                    wp->w_flag |= WFHARD|WFMODE;
X                }
X            }
X
X            lastwp = wp;
X        }
X    }
X
X    /* screen is garbage */
X    term.t_nrow = n - 1;
X    sgarbf = TRUE;
X    return(TRUE);
X}
X
Xnewwidth(f, n)    /* resize the screen, re-writing the screen */
X
Xint f;    /* default flag */
Xint n;    /* numeric argument */
X
X{
X    /* if the command defaults, assume the largest */
X    if (f == FALSE)
X        n = term.t_mcol;
X
X    /* make sure it's in range */
X    if (n < 10 || n > term.t_mcol) {
X        mlwrite("%%Screen width out of range");
X        return(FALSE);
X    }
X
X    /* otherwise, just re-width it (no big deal) */
X    term.t_ncol = n;
X    term.t_margin = n / 10;
X    term.t_scrsiz = n - (term.t_margin * 2);
X    curwp->w_flag |= WFHARD | WFMOVE | WFMODE;
X    sgarbf = TRUE;
X    return(TRUE);
X}
E!O!F
newsize=`wc -c < window.c`
if [ $newsize -ne 18032 ]
then echo "File window.c was $newsize bytes, 18032 expected"
fi
echo 'x - word.c (text)'
sed << 'E!O!F' 's/^X//' > word.c
X/*
X * The routines in this file implement commands that work word or a
X * paragraph at a time.  There are all sorts of word mode commands.  If I
X * do any sentence mode commands, they are likely to be put in this file.
X */
X
X#if    MEGAMAX & ST520
Xoverlay    "word"
X#endif
X
X#include        <stdio.h>
X#include        "estruct.h"
X#include    "edef.h"
X
X/* Word wrap on n-spaces. Back-over whatever precedes the point on the current
X * line and stop on the first word-break or the beginning of the line. If we
X * reach the beginning of the line, jump back to the end of the word and start
X * a new line.  Otherwise, break the line at the word-break, eat it, and jump
X * back to the end of the word.
X * Returns TRUE on success, FALSE on errors.
X */
Xwrapword(f, n)
X
Xint f;        /* default flag */
Xint n;        /* numeric argument */
X
X{
X        register int cnt;    /* size of word wrapped to next line */
X    register int c;        /* charector temporary */
X
X    /* backup from the <NL> 1 char */
X        if (!backchar(0, 1))
X            return(FALSE);
X
X    /* back up until we aren't in a word,
X       make sure there is a break in the line */
X        cnt = 0;
X    while (((c = lgetc(curwp->w_dotp, curwp->w_doto)) != ' ')
X                && (c != '\t')) {
X                cnt++;
X                if (!backchar(0, 1))
X                        return(FALSE);
X        /* if we make it to the beginning, start a new line */
X        if (curwp->w_doto == 0) {
X            gotoeol(FALSE, 0);
X            return(lnewline());
X        }
X        }
X
X    /* delete the forward white space */
X        if (!forwdel(0, 1))
X                return(FALSE);
X
X    /* put in a end of line */
X        if (!lnewline())
X                return(FALSE);
X
X    /* and past the first word */
X    while (cnt-- > 0) {
X        if (forwchar(FALSE, 1) == FALSE)
X            return(FALSE);
X    }
X        return(TRUE);
X}
X
X/*
X * Move the cursor backward by "n" words. All of the details of motion are
X * performed by the "backchar" and "forwchar" routines. Error if you try to
X * move beyond the buffers.
X */
Xbackword(f, n)
X{
X        if (n < 0)
X                return (forwword(f, -n));
X        if (backchar(FALSE, 1) == FALSE)
X                return (FALSE);
X        while (n--) {
X                while (inword() == FALSE) {
X                        if (backchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X                while (inword() != FALSE) {
X                        if (backchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X        }
X        return (forwchar(FALSE, 1));
X}
X
X/*
X * Move the cursor forward by the specified number of words. All of the motion
X * is done by "forwchar". Error if you try and move beyond the buffer's end.
X */
Xforwword(f, n)
X{
X        if (n < 0)
X                return (backword(f, -n));
X        while (n--) {
X#if    NFWORD
X                while (inword() != FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X#endif
X                while (inword() == FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X#if    NFWORD == 0
X                while (inword() != FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X#endif
X        }
X    return(TRUE);
X}
X
X/*
X * Move the cursor forward by the specified number of words. As you move,
X * convert any characters to upper case. Error if you try and move beyond the
X * end of the buffer. Bound to "M-U".
X */
Xupperword(f, n)
X{
X        register int    c;
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X        if (n < 0)
X                return (FALSE);
X        while (n--) {
X                while (inword() == FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X                while (inword() != FALSE) {
X                        c = lgetc(curwp->w_dotp, curwp->w_doto);
X                        if (c>='a' && c<='z') {
X                                c -= 'a'-'A';
X                                lputc(curwp->w_dotp, curwp->w_doto, c);
X                                lchange(WFHARD);
X                        }
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X        }
X        return (TRUE);
X}
X
X/*
X * Move the cursor forward by the specified number of words. As you move
X * convert characters to lower case. Error if you try and move over the end of
X * the buffer. Bound to "M-L".
X */
Xlowerword(f, n)
X{
X        register int    c;
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X        if (n < 0)
X                return (FALSE);
X        while (n--) {
X                while (inword() == FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X                while (inword() != FALSE) {
X                        c = lgetc(curwp->w_dotp, curwp->w_doto);
X                        if (c>='A' && c<='Z') {
X                                c += 'a'-'A';
X                                lputc(curwp->w_dotp, curwp->w_doto, c);
X                                lchange(WFHARD);
X                        }
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X        }
X        return (TRUE);
X}
X
X/*
X * Move the cursor forward by the specified number of words. As you move
X * convert the first character of the word to upper case, and subsequent
X * characters to lower case. Error if you try and move past the end of the
X * buffer. Bound to "M-C".
X */
Xcapword(f, n)
X{
X        register int    c;
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X        if (n < 0)
X                return (FALSE);
X        while (n--) {
X                while (inword() == FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X                if (inword() != FALSE) {
X                        c = lgetc(curwp->w_dotp, curwp->w_doto);
X                        if (c>='a' && c<='z') {
X                                c -= 'a'-'A';
X                                lputc(curwp->w_dotp, curwp->w_doto, c);
X                                lchange(WFHARD);
X                        }
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                        while (inword() != FALSE) {
X                                c = lgetc(curwp->w_dotp, curwp->w_doto);
X                                if (c>='A' && c<='Z') {
X                                        c += 'a'-'A';
X                                        lputc(curwp->w_dotp, curwp->w_doto, c);
X                                        lchange(WFHARD);
X                                }
X                                if (forwchar(FALSE, 1) == FALSE)
X                                        return (FALSE);
X                        }
X                }
X        }
X        return (TRUE);
X}
X
X/*
X * Kill forward by "n" words. Remember the location of dot. Move forward by
X * the right number of words. Put dot back where it was and issue the kill
X * command for the right number of characters. Bound to "M-D".
X */
Xdelfword(f, n)
X{
X        register LINE   *dotp;
X        register int    doto;
X        long size;
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X        if (n < 0)
X                return (FALSE);
X        if ((lastflag&CFKILL) == 0)     /* Clear kill buffer if */
X                kdelete();              /* last wasn't a kill.  */
X        thisflag |= CFKILL;
X        dotp = curwp->w_dotp;
X        doto = curwp->w_doto;
X        size = 0;
X        while (n--) {
X#if    NFWORD
X        if (curwp->w_doto == llength(curwp->w_dotp)) {
X            if (forwchar(FALSE,1) == FALSE)
X                return(FALSE);
X            ++size;
X        }
X
X        if (inword()) {
X            while (inword() != FALSE) {
X                if (forwchar(FALSE,1) == FALSE)
X                    return(FALSE);
X                ++size;
X            }
X
X                    while ((iswhite()) &&
X                    (curwp->w_doto != llength(curwp->w_dotp))) {
X                            if (forwchar(FALSE, 1) == FALSE)
X                                    return (FALSE);
X                            ++size;
X                    }
X        }
X        else {
X            while ((inword() == FALSE) &&
X                    (curwp->w_doto != llength(curwp->w_dotp))) {
X                if (forwchar(FALSE,1) == FALSE)
X                    return(FALSE);
X                ++size;
X            }
X        }
X#else
X                while (inword() == FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                        ++size;
X                }
X
X                while (inword() != FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                        ++size;
X                }
X#endif
X        }
X        curwp->w_dotp = dotp;
X        curwp->w_doto = doto;
X        return (ldelete(size, TRUE));
X}
X
X/*
X * Kill backwards by "n" words. Move backwards by the desired number of words,
X * counting the characters. When dot is finally moved to its resting place,
X * fire off the kill command. Bound to "M-Rubout" and to "M-Backspace".
X */
Xdelbword(f, n)
X{
X        long size;
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X        if (n < 0)
X                return (FALSE);
X        if ((lastflag&CFKILL) == 0)     /* Clear kill buffer if */
X                kdelete();              /* last wasn't a kill.  */
X        thisflag |= CFKILL;
X        if (backchar(FALSE, 1) == FALSE)
X                return (FALSE);
X        size = 0;
X        while (n--) {
X                while (inword() == FALSE) {
X                        if (backchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                        ++size;
X                }
X                while (inword() != FALSE) {
X                        if (backchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                        ++size;
X                }
X        }
X        if (forwchar(FALSE, 1) == FALSE)
X                return (FALSE);
X        return (ldelete(size, TRUE));
X}
X
X/*
X * Return TRUE if the character at dot is a character that is considered to be
X * part of a word. The word character list is hard coded. Should be setable.
X */
Xinword()
X{
X        register int    c;
X
X        if (curwp->w_doto == llength(curwp->w_dotp))
X                return (FALSE);
X        c = lgetc(curwp->w_dotp, curwp->w_doto);
X        if (c>='a' && c<='z')
X                return (TRUE);
X        if (c>='A' && c<='Z')
X                return (TRUE);
X        if (c>='0' && c<='9')
X                return (TRUE);
X        if (c=='$' || c=='_')                   /* For identifiers      */
X                return (TRUE);
X        return (FALSE);
X}
X
X/*
X *  return TRUE if the current character is whitespace,
X *  else return FALSE.
X */
X
Xiswhite()
X{
X        register int    c;
X
X        if (curwp->w_doto == llength(curwp->w_dotp))
X                return (FALSE);
X        c = lgetc(curwp->w_dotp, curwp->w_doto);
X    if (c == ' ' || c == '\t') return (TRUE);
X        return (FALSE);
X}
X
X#if    WORDPRO
Xfillpara(f, n)    /* Fill the current paragraph according to the current
X           fill column                        */
X
Xint f, n;    /* deFault flag and Numeric argument */
X
X{
X    register int c;            /* current char durring scan    */
X    register int wordlen;        /* length of current word    */
X    register int clength;        /* position on line during fill    */
X    register int i;            /* index during word copy    */
X    register int newlength;        /* tentative new line length    */
X    register int eopflag;        /* Are we at the End-Of-Paragraph? */
X    register int firstflag;        /* first word? (needs no space)    */
X    register LINE *eopline;        /* pointer to line just past EOP */
X    register int dotflag;        /* was the last char a period?    */
X    char wbuf[NSTRING];        /* buffer for current word    */
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X    if (fillcol == 0) {    /* no fill column set */
X        mlwrite("No fill column set");
X        return(FALSE);
X    }
X
X    /* record the pointer to the line just past the EOP */
X    gotoeop(FALSE, 1);
X    eopline = lforw(curwp->w_dotp);
X
X    /* and back top the beginning of the paragraph */
X    gotobop(FALSE, 1);
X
X    /* initialize various info */
X    clength = curwp->w_doto;
X    if (clength && curwp->w_dotp->l_text[0] == TAB)
X        clength = 8;
X    wordlen = 0;
X    dotflag = FALSE;
X
X    /* scan through lines, filling words */
X    firstflag = TRUE;
X    eopflag = FALSE;
X    while (!eopflag) {
X        /* get the next character in the paragraph */
X        if (curwp->w_doto == llength(curwp->w_dotp)) {
X            c = ' ';
X            if (lforw(curwp->w_dotp) == eopline)
X                eopflag = TRUE;
X        } else
X            c = lgetc(curwp->w_dotp, curwp->w_doto);
X
X        /* and then delete it */
X        ldelete(1L, FALSE);
X
X        /* if not a separator, just add it in */
X        if (c != ' ' && c != '\t') {
X            dotflag = (c == '.');        /* was it a dot */
X            if (wordlen < NSTRING - 1)
X                wbuf[wordlen++] = c;
X        } else if (wordlen) {
X            /* at a word break with a word waiting */
X            /* calculate tantitive new length with word added */
X            newlength = clength + 1 + wordlen;
X            if (newlength <= fillcol) {
X                /* add word to current line */
X                if (!firstflag) {
X                    linsert(1, ' '); /* the space */
X                    ++clength;
X                }
X                firstflag = FALSE;
X            } else {
X                /* start a new line */
X                lnewline();
X                clength = 0;
X            }
X
X            /* and add the word in in either case */
X            for (i=0; i<wordlen; i++) {
X                linsert(1, wbuf[i]);
X                ++clength;
X            }
X            if (dotflag) {
X                linsert(1, ' ');
X                ++clength;
X            }
X            wordlen = 0;
X        }
X    }
X    /* and add a last newline for the end of our new paragraph */
X    lnewline();
X    return(TRUE);
X}
X
Xkillpara(f, n)    /* delete n paragraphs starting with the current one */
X
Xint f;    /* default flag */
Xint n;    /* # of paras to delete */
X
X{
X    register int status;    /* returned status of functions */
X
X    while (n--) {        /* for each paragraph to delete */
X
X        /* mark out the end and beginning of the para to delete */
X        gotoeop(FALSE, 1);
X
X        /* set the mark here */
X            curwp->w_markp = curwp->w_dotp;
X            curwp->w_marko = curwp->w_doto;
X
X        /* go to the beginning of the paragraph */
X        gotobop(FALSE, 1);
X        curwp->w_doto = 0;    /* force us to the beginning of line */
X
X        /* and delete it */
X        if ((status = killregion(FALSE, 1)) != TRUE)
X            return(status);
X
X        /* and clean up the 2 extra lines */
X        ldelete(2L, TRUE);
X    }
X    return(TRUE);
X}
X
X
X/*    wordcount:    count the # of words in the marked region,
X            along with average word sizes, # of chars, etc,
X            and report on them.            */
X
Xwordcount(f, n)
X
Xint f, n;    /* ignored numeric arguments */
X
X{
X    register LINE *lp;    /* current line to scan */
X    register int offset;    /* current char to scan */
X    long size;        /* size of region left to count */
X    register int ch;    /* current character to scan */
X    register int wordflag;    /* are we in a word now? */
X    register int lastword;    /* were we just in a word? */
X    long nwords;        /* total # of words */
X    long nchars;        /* total number of chars */
X    int nlines;        /* total number of lines in region */
X    int avgch;        /* average number of chars/word */
X    int status;        /* status return code */
X    REGION region;        /* region to look at */
X
X    /* make sure we have a region to count */
X        if ((status = getregion(®ion)) != TRUE)
X                return(status);
X    lp = region.r_linep;
X    offset = region.r_offset;
X    size = region.r_size;
X
X    /* count up things */
X    lastword = FALSE;
X    nchars = 0L;
X    nwords = 0L;
X    nlines = 0;
X    while (size--) {
X
X        /* get the current character */
X        if (offset == llength(lp)) {    /* end of line */
X            ch = '\n';
X            lp = lforw(lp);
X            offset = 0;
X            ++nlines;
X        } else {
X            ch = lgetc(lp, offset);
X            ++offset;
X        }
X
X        /* and tabulate it */
X        wordflag = ((ch >= 'a' && ch <= 'z') ||
X                (ch >= 'A' && ch <= 'Z') ||
X                (ch >= '0' && ch <= '9') ||
X                (ch == '$' || ch == '_'));
X        if (wordflag == TRUE && lastword == FALSE)
X            ++nwords;
X        lastword = wordflag;
X        ++nchars;
X    }
X
X    /* and report on the info */
X    if (nwords > 0L)
X        avgch = (int)((100L * nchars) / nwords);
X    else
X        avgch = 0;
X
X    mlwrite("Words %D Chars %D Lines %d Avg chars/word %f",
X        nwords, nchars, nlines + 1, avgch);
X    return(TRUE);
X}
X#endif
E!O!F
newsize=`wc -c < word.c`
if [ $newsize -ne 16421 ]
then echo "File word.c was $newsize bytes, 16421 expected"
fi
echo 'x - word.old (text)'
sed << 'E!O!F' 's/^X//' > word.old
X/*
X * The routines in this file implement commands that work word or a
X * paragraph at a time.  There are all sorts of word mode commands.  If I
X * do any sentence mode commands, they are likely to be put in this file.
X */
X
X#if    MEGAMAX & ST520
Xoverlay    "word"
X#endif
X
X#include        <stdio.h>
X#include        "estruct.h"
X#include    "edef.h"
X
X/* Word wrap on n-spaces. Back-over whatever precedes the point on the current
X * line and stop on the first word-break or the beginning of the line. If we
X * reach the beginning of the line, jump back to the end of the word and start
X * a new line.  Otherwise, break the line at the word-break, eat it, and jump
X * back to the end of the word.
X * Returns TRUE on success, FALSE on errors.
X */
Xwrapword(f, n)
X
Xint f;        /* default flag */
Xint n;        /* numeric argument */
X
X{
X        register int cnt;    /* size of word wrapped to next line */
X    register int c;        /* charector temporary */
X
X    /* backup from the <NL> 1 char */
X        if (!backchar(0, 1))
X            return(FALSE);
X
X    /* back up until we aren't in a word,
X       make sure there is a break in the line */
X        cnt = 0;
X    while (((c = lgetc(curwp->w_dotp, curwp->w_doto)) != ' ')
X                && (c != '\t')) {
X                cnt++;
X                if (!backchar(0, 1))
X                        return(FALSE);
X        /* if we make it to the beginning, start a new line */
X        if (curwp->w_doto == 0) {
X            gotoeol(FALSE, 0);
X            return(lnewline());
X        }
X        }
X
X    /* delete the forward white space */
X        if (!forwdel(0, 1))
X                return(FALSE);
X
X    /* put in a end of line */
X        if (!lnewline())
X                return(FALSE);
X
X    /* and past the first word */
X    while (cnt-- > 0) {
X        if (forwchar(FALSE, 1) == FALSE)
X            return(FALSE);
X    }
X        return(TRUE);
X}
X
X/*
X * Move the cursor backward by "n" words. All of the details of motion are
X * performed by the "backchar" and "forwchar" routines. Error if you try to
X * move beyond the buffers.
X */
Xbackword(f, n)
X{
X        if (n < 0)
X                return (forwword(f, -n));
X        if (backchar(FALSE, 1) == FALSE)
X                return (FALSE);
X        while (n--) {
X                while (inword() == FALSE) {
X                        if (backchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X                while (inword() != FALSE) {
X                        if (backchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X        }
X        return (forwchar(FALSE, 1));
X}
X
X/*
X * Move the cursor forward by the specified number of words. All of the motion
X * is done by "forwchar". Error if you try and move beyond the buffer's end.
X */
Xforwword(f, n)
X{
X        if (n < 0)
X                return (backword(f, -n));
X        while (n--) {
X#if    NFWORD
X                while (inword() != FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X#endif
X                while (inword() == FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X#if    NFWORD == 0
X                while (inword() != FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X#endif
X        }
X    return(TRUE);
X}
X
X/*
X * Move the cursor forward by the specified number of words. As you move,
X * convert any characters to upper case. Error if you try and move beyond the
X * end of the buffer. Bound to "M-U".
X */
Xupperword(f, n)
X{
X        register int    c;
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X        if (n < 0)
X                return (FALSE);
X        while (n--) {
X                while (inword() == FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X                while (inword() != FALSE) {
X                        c = lgetc(curwp->w_dotp, curwp->w_doto);
X                        if (c>='a' && c<='z') {
X                                c -= 'a'-'A';
X                                lputc(curwp->w_dotp, curwp->w_doto, c);
X                                lchange(WFHARD);
X                        }
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X        }
X        return (TRUE);
X}
X
X/*
X * Move the cursor forward by the specified number of words. As you move
X * convert characters to lower case. Error if you try and move over the end of
X * the buffer. Bound to "M-L".
X */
Xlowerword(f, n)
X{
X        register int    c;
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X        if (n < 0)
X                return (FALSE);
X        while (n--) {
X                while (inword() == FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X                while (inword() != FALSE) {
X                        c = lgetc(curwp->w_dotp, curwp->w_doto);
X                        if (c>='A' && c<='Z') {
X                                c += 'a'-'A';
X                                lputc(curwp->w_dotp, curwp->w_doto, c);
X                                lchange(WFHARD);
X                        }
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X        }
X        return (TRUE);
X}
X
X/*
X * Move the cursor forward by the specified number of words. As you move
X * convert the first character of the word to upper case, and subsequent
X * characters to lower case. Error if you try and move past the end of the
X * buffer. Bound to "M-C".
X */
Xcapword(f, n)
X{
X        register int    c;
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X        if (n < 0)
X                return (FALSE);
X        while (n--) {
X                while (inword() == FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                }
X                if (inword() != FALSE) {
X                        c = lgetc(curwp->w_dotp, curwp->w_doto);
X                        if (c>='a' && c<='z') {
X                                c -= 'a'-'A';
X                                lputc(curwp->w_dotp, curwp->w_doto, c);
X                                lchange(WFHARD);
X                        }
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                        while (inword() != FALSE) {
X                                c = lgetc(curwp->w_dotp, curwp->w_doto);
X                                if (c>='A' && c<='Z') {
X                                        c += 'a'-'A';
X                                        lputc(curwp->w_dotp, curwp->w_doto, c);
X                                        lchange(WFHARD);
X                                }
X                                if (forwchar(FALSE, 1) == FALSE)
X                                        return (FALSE);
X                        }
X                }
X        }
X        return (TRUE);
X}
X
X/*
X * Kill forward by "n" words. Remember the location of dot. Move forward by
X * the right number of words. Put dot back where it was and issue the kill
X * command for the right number of characters. Bound to "M-D".
X */
Xdelfword(f, n)
X{
X        register LINE   *dotp;
X        register int    doto;
X        long size;
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X        if (n < 0)
X                return (FALSE);
X        if ((lastflag&CFKILL) == 0)     /* Clear kill buffer if */
X                kdelete();              /* last wasn't a kill.  */
X        thisflag |= CFKILL;
X        dotp = curwp->w_dotp;
X        doto = curwp->w_doto;
X        size = 0;
X        while (n--) {
X#if    NFWORD
X        if (curwp->w_doto == llength(curwp->w_dotp)) {
X            if (forwchar(FALSE,1) == FALSE)
X                return(FALSE);
X            ++size;
X        }
X
X        while (inword() != FALSE) {
X            if (forwchar(FALSE,1) == FALSE)
X                return(FALSE);
X            ++size;
X        }
X
X                while ((inword() == FALSE) &&
X                (curwp->w_doto != llength(curwp->w_dotp))) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                        ++size;
X                }
X#else
X                while (inword() == FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                        ++size;
X                }
X
X                while (inword() != FALSE) {
X                        if (forwchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                        ++size;
X                }
X#endif
X        }
X        curwp->w_dotp = dotp;
X        curwp->w_doto = doto;
X        return (ldelete(size, TRUE));
X}
X
X/*
X * Kill backwards by "n" words. Move backwards by the desired number of words,
X * counting the characters. When dot is finally moved to its resting place,
X * fire off the kill command. Bound to "M-Rubout" and to "M-Backspace".
X */
Xdelbword(f, n)
X{
X        long size;
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X        if (n < 0)
X                return (FALSE);
X        if ((lastflag&CFKILL) == 0)     /* Clear kill buffer if */
X                kdelete();              /* last wasn't a kill.  */
X        thisflag |= CFKILL;
X        if (backchar(FALSE, 1) == FALSE)
X                return (FALSE);
X        size = 0;
X        while (n--) {
X                while (inword() == FALSE) {
X                        if (backchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                        ++size;
X                }
X                while (inword() != FALSE) {
X                        if (backchar(FALSE, 1) == FALSE)
X                                return (FALSE);
X                        ++size;
X                }
X        }
X        if (forwchar(FALSE, 1) == FALSE)
X                return (FALSE);
X        return (ldelete(size, TRUE));
X}
X
X/*
X * Return TRUE if the character at dot is a character that is considered to be
X * part of a word. The word character list is hard coded. Should be setable.
X */
Xinword()
X{
X        register int    c;
X
X        if (curwp->w_doto == llength(curwp->w_dotp))
X                return (FALSE);
X        c = lgetc(curwp->w_dotp, curwp->w_doto);
X        if (c>='a' && c<='z')
X                return (TRUE);
X        if (c>='A' && c<='Z')
X                return (TRUE);
X        if (c>='0' && c<='9')
X                return (TRUE);
X        if (c=='$' || c=='_')                   /* For identifiers      */
X                return (TRUE);
X        return (FALSE);
X}
X
X#if    WORDPRO
Xfillpara(f, n)    /* Fill the current paragraph according to the current
X           fill column                        */
X
Xint f, n;    /* deFault flag and Numeric argument */
X
X{
X    register int c;            /* current char durring scan    */
X    register int wordlen;        /* length of current word    */
X    register int clength;        /* position on line during fill    */
X    register int i;            /* index during word copy    */
X    register int newlength;        /* tentative new line length    */
X    register int eopflag;        /* Are we at the End-Of-Paragraph? */
X    register int firstflag;        /* first word? (needs no space)    */
X    register LINE *eopline;        /* pointer to line just past EOP */
X    register int dotflag;        /* was the last char a period?    */
X    char wbuf[NSTRING];        /* buffer for current word    */
X
X    if (curbp->b_mode&MDVIEW)    /* don't allow this command if    */
X        return(rdonly());    /* we are in read only mode    */
X    if (fillcol == 0) {    /* no fill column set */
X        mlwrite("No fill column set");
X        return(FALSE);
X    }
X
X    /* record the pointer to the line just past the EOP */
X    gotoeop(FALSE, 1);
X    eopline = lforw(curwp->w_dotp);
X
X    /* and back top the beginning of the paragraph */
X    gotobop(FALSE, 1);
X
X    /* initialize various info */
X    clength = curwp->w_doto;
X    if (clength && curwp->w_dotp->l_text[0] == TAB)
X        clength = 8;
X    wordlen = 0;
X    dotflag = FALSE;
X
X    /* scan through lines, filling words */
X    firstflag = TRUE;
X    eopflag = FALSE;
X    while (!eopflag) {
X        /* get the next character in the paragraph */
X        if (curwp->w_doto == llength(curwp->w_dotp)) {
X            c = ' ';
X            if (lforw(curwp->w_dotp) == eopline)
X                eopflag = TRUE;
X        } else
X            c = lgetc(curwp->w_dotp, curwp->w_doto);
X
X        /* and then delete it */
X        ldelete(1L, FALSE);
X
X        /* if not a separator, just add it in */
X        if (c != ' ' && c != '\t') {
X            dotflag = (c == '.');        /* was it a dot */
X            if (wordlen < NSTRING - 1)
X                wbuf[wordlen++] = c;
X        } else if (wordlen) {
X            /* at a word break with a word waiting */
X            /* calculate tantitive new length with word added */
X            newlength = clength + 1 + wordlen;
X            if (newlength <= fillcol) {
X                /* add word to current line */
X                if (!firstflag) {
X                    linsert(1, ' '); /* the space */
X                    ++clength;
X                }
X                firstflag = FALSE;
X            } else {
X                /* start a new line */
X                lnewline();
X                clength = 0;
X            }
X
X            /* and add the word in in either case */
X            for (i=0; i<wordlen; i++) {
X                linsert(1, wbuf[i]);
X                ++clength;
X            }
X            if (dotflag) {
X                linsert(1, ' ');
X                ++clength;
X            }
X            wordlen = 0;
X        }
X    }
X    /* and add a last newline for the end of our new paragraph */
X    lnewline();
X    return(TRUE);
X}
X
Xkillpara(f, n)    /* delete n paragraphs starting with the current one */
X
Xint f;    /* default flag */
Xint n;    /* # of paras to delete */
X
X{
X    register int status;    /* returned status of functions */
X
X    while (n--) {        /* for each paragraph to delete */
X
X        /* mark out the end and beginning of the para to delete */
X        gotoeop(FALSE, 1);
X
X        /* set the mark here */
X            curwp->w_markp = curwp->w_dotp;
X            curwp->w_marko = curwp->w_doto;
X
X        /* go to the beginning of the paragraph */
X        gotobop(FALSE, 1);
X        curwp->w_doto = 0;    /* force us to the beginning of line */
X
X        /* and delete it */
X        if ((status = killregion(FALSE, 1)) != TRUE)
X            return(status);
X
X        /* and clean up the 2 extra lines */
X        ldelete(2L, TRUE);
X    }
X    return(TRUE);
X}
X
X
X/*    wordcount:    count the # of words in the marked region,
X            along with average word sizes, # of chars, etc,
X            and report on them.            */
X
Xwordcount(f, n)
X
Xint f, n;    /* ignored numeric arguments */
X
X{
X    register LINE *lp;    /* current line to scan */
X    register int offset;    /* current char to scan */
X    long size;        /* size of region left to count */
X    register int ch;    /* current character to scan */
X    register int wordflag;    /* are we in a word now? */
X    register int lastword;    /* were we just in a word? */
X    long nwords;        /* total # of words */
X    long nchars;        /* total number of chars */
X    int nlines;        /* total number of lines in region */
X    int avgch;        /* average number of chars/word */
X    int status;        /* status return code */
X    REGION region;        /* region to look at */
X
X    /* make sure we have a region to count */
X        if ((status = getregion(®ion)) != TRUE)
X                return(status);
X    lp = region.r_linep;
X    offset = region.r_offset;
X    size = region.r_size;
X
X    /* count up things */
X    lastword = FALSE;
X    nchars = 0L;
X    nwords = 0L;
X    nlines = 0;
X    while (size--) {
X
X        /* get the current character */
X        if (offset == llength(lp)) {    /* end of line */
X            ch = '\n';
X            lp = lforw(lp);
X            offset = 0;
X            ++nlines;
X        } else {
X            ch = lgetc(lp, offset);
X            ++offset;
X        }
X
X        /* and tabulate it */
X        wordflag = ((ch >= 'a' && ch <= 'z') ||
X                (ch >= 'A' && ch <= 'Z') ||
X                (ch >= '0' && ch <= '9') ||
X                (ch == '$' || ch == '_'));
X        if (wordflag == TRUE && lastword == FALSE)
X            ++nwords;
X        lastword = wordflag;
X        ++nchars;
X    }
X
X    /* and report on the info */
X    if (nwords > 0L)
X        avgch = (int)((100L * nchars) / nwords);
X    else
X        avgch = 0;
X
X    mlwrite("Words %D Chars %D Lines %d Avg chars/word %f",
X        nwords, nchars, nlines + 1, avgch);
X    return(TRUE);
X}
X#endif
E!O!F
newsize=`wc -c < word.old`
if [ $newsize -ne 15895 ]
then echo "File word.old was $newsize bytes, 15895 expected"
fi
echo 'x - z309.c (text)'
sed << 'E!O!F' 's/^X//' > z309.c
X/*
X * The routines in this file provide support for the Zenith Z-100 PC
X * family.  It goes directly to the graphics RAM to do screen output.
X * It compiles into nothing if not a Zenith driver.
X */
X
X#define    termdef    1            /* don't define "term" external */
X
X#include        <stdio.h>
X#include    "estruct.h"
X#include        "edef.h"
X
X#if     Z309
X
X/* set NROW to 25 for 25-line interlaced mode */
X#define NROW    50                      /* Screen size.                 */
X#define NCOL    80                      /* Edit if you want to.         */
X#define    MARGIN    8            /* size of minimim margin and    */
X#define    SCRSIZ    64            /* scroll size for extended lines */
X#define    NPAUSE    200            /* # times thru update to pause */
X#define BEL     0x07                    /* BEL character.               */
X#define ESC     0x1B                    /* ESC character.               */
X#define    SPACE    32            /* space character        */
X
X#define    SCADC    0xb8000000L        /* CGA address of screen RAM    */
X#define    SCADM    0xb0000000L        /* MONO address of screen RAM    */
X
X#define    CDMONO    0            /* monochrome text card        */
X#define    CDCGA50    1            /* 50-line color graphics card    */
X#define CDCGI25 2            /* 25-line interlaced CGA text    */
X#define CDCGA25 3            /* 25-line color graphics card    */
X#define    CDSENSE    9            /* detect the card type        */
X
Xint dtype = CDCGA50;            /* current display type        */
Xlong scadd;                /* address of screen ram    */
Xint *scptr[NROW];            /* pointer to screen lines    */
Xint sline[NCOL];            /* screen line image        */
Xextern union REGS rg;            /* cpu register for use of DOS calls */
X
Xextern  int     ttopen();               /* Forward references.          */
Xextern  int     ttgetc();
Xextern  int     ttputc();
Xextern  int     ttflush();
Xextern  int     ttclose();
Xextern  int     z309move();
Xextern  int     z309eeol();
Xextern  int     z309eeop();
Xextern  int     z309beep();
Xextern  int     z309open();
Xextern    int    z309rev();
Xextern    int    z309cres();
Xextern    int    z309close();
Xextern    int    z309putc();
Xextern    int    z309kopen();
Xextern    int    z309kclose();
X
X#if    COLOR
Xextern    int    z309fcol();
Xextern    int    z309bcol();
X
Xint    cfcolor = -1;        /* current forground color */
Xint    cbcolor = -1;        /* current background color */
Xint    ctrans[] =        /* ansi to z309 color translation table */
X    {0, 4, 2, 6, 1, 5, 3, 7};
X#endif
X
X/*
X * Standard terminal interface dispatch table. Most of the fields point into
X * "termio" code.
X */
XTERM    term    = {
X    NROW-1,
X        NROW-1,
X        NCOL,
X        NCOL,
X    MARGIN,
X    SCRSIZ,
X    NPAUSE,
X        z309open,
X        z309close,
X    z309kopen,
X    z309kclose,
X        ttgetc,
X    z309putc,
X        ttflush,
X        z309move,
X        z309eeol,
X        z309eeop,
X        z309beep,
X    z309rev,
X    z309cres
X#if    COLOR
X    , z309fcol,
X    z309bcol
X#endif
X};
X
Xextern union REGS rg;
X
X#if    COLOR
Xz309fcol(color)        /* set the current output color */
X
Xint color;    /* color to set */
X
X{
X    cfcolor = ctrans[color];
X}
X
Xz309bcol(color)        /* set the current background color */
X
Xint color;    /* color to set */
X
X{
X        cbcolor = ctrans[color];
X}
X#endif
Xz309move(row, col)
X{
X    rg.h.ah = 2;        /* set cursor position function code */
X    rg.h.dl = col;
X    rg.h.dh = row;
X    rg.h.bh = 0;        /* set screen page number */
X    int86(0x10, &rg, &rg);
X}
X
Xz309eeol()    /* erase to the end of the line */
X
X{
X    int attr;    /* attribute byte mask to place in RAM */
X    int *lnptr;    /* pointer to the destination line */
X    int i;
X    int ccol;    /* current column cursor lives */
X    int crow;    /*       row    */
X
X    /* find the current cursor position */
X    rg.h.ah = 3;        /* read cursor position function code */
X    rg.h.bh = 0;        /* current video page */
X    int86(0x10, &rg, &rg);
X    ccol = rg.h.dl;        /* record current column */
X    crow = rg.h.dh;        /* and row */
X
X    /* build the attribute byte and setup the screen pointer */
X#if    COLOR
X    if (dtype != CDMONO)
X        attr = (((cbcolor & 15) << 4) | (cfcolor & 15)) << 8;
X    else
X        attr = 0x0700;
X#else
X    attr = 0x0700;
X#endif
X    lnptr = &sline[0];
X    for (i=0; i < term.t_ncol; i++)
X        *lnptr++ = SPACE | attr;
X
X#if 0    /* Heath/Zenith builds flicker-less CGAs */
X    if (flickcode) {
X        /* wait for vertical retrace to be off */
X        while ((inp(0x3da) & 8))
X            ;
X
X        /* and to be back on */
X        while ((inp(0x3da) & 8) == 0)
X            ;
X    }
X#endif
X
X    /* and send the string out */
X    movmem(&sline[0], scptr[crow]+ccol, (term.t_ncol-ccol)*2);
X
X}
X
Xz309putc(ch)    /* put a character at the current position in the
X           current colors */
X
Xint ch;
X
X{
X    rg.h.ah = 14;        /* write char to screen with current attrs */
X    rg.h.al = ch;
X#if    COLOR
X    if (dtype != CDMONO)
X        rg.h.bl = cfcolor;
X    else
X        rg.h.bl = 0x07;
X#else
X    rg.h.bl = 0x07;
X#endif
X    int86(0x10, &rg, &rg);
X}
X
Xz309eeop()
X{
X    int attr;        /* attribute to fill screen with */
X
X    rg.h.ah = 6;        /* scroll page up function code */
X    rg.h.al = 0;        /* # lines to scroll (clear it) */
X    rg.x.cx = 0;        /* upper left corner of scroll */
X/*HERE*/    rg.x.dx = 0x184f;    /* lower right corner of scroll */
X#if    COLOR
X    if (dtype != CDMONO)
X        attr = ((ctrans[gbcolor] & 15) << 4) | (ctrans[gfcolor] & 15);
X    else
X        attr = 0;
X#else
X    attr = 0;
X#endif
X    rg.h.bh = attr;
X    int86(0x10, &rg, &rg);
X}
X
Xz309rev(state)        /* change reverse video state */
X
Xint state;    /* TRUE = reverse, FALSE = normal */
X
X{
X    /* This never gets used under the z309-PC driver */
X}
X
Xz309cres(res)    /* change screen resolution */
X
Xchar *res;    /* resolution to change to */
X
X{
X    if (strcmp(res, "CGA50") == 0) {
X        scinit(CDCGA50);
X        return(TRUE);
X    } else if (strcmp(res, "MONO") == 0) {
X        scinit(CDMONO);
X        return(TRUE);
X    } else
X        return(FALSE);
X}
X
Xz309beep()
X{
X#if    MWC86
X    putcnb(BEL);
X#else
X    bdos(6, BEL, 0);
X#endif
X}
X
Xz309open()
X{
X    scinit(CDSENSE);
X    revexist = TRUE;
X        ttopen();
X}
X
Xz309close()
X
X{
X    rg.h.ah = 101;
X    rg.h.al = 1;    /* 25-line interlace mode */
X    int86(0x10, &rg, &rg);
X#if    COLOR
X    z309fcol(7);
X    z309bcol(0);
X#endif
X    ttclose();
X}
X
Xz309kopen()    /* open the keyboard */
X
X{
X}
X
Xz309kclose()    /* close the keyboard */
X
X{
X}
X
Xscinit(type)    /* initialize the screen head pointers */
X
Xint type;    /* type of adapter to init for */
X
X{
X    union {
X        long laddr;    /* long form of address */
X        int *paddr;    /* pointer form of address */
X    } addr;
X    int i;
X
X    /* if asked...find out what display is connected */
X    int86(0x11, &rg, &rg);
X    dtype = CDCGA50;
X    scadd = SCADC;
X    strcpy(sres, "CGA50");
X    if ((((rg.x.ax >> 4) & 11) == 3) || type == CDMONO) {
X        strcpy(sres, "MONO");
X        dtype = CDMONO;
X        scadd = SCADM;
X    }
X    else {
X        rg.h.ah = 101;
X/* set al = 1 for 25-line interlace mode */
X        rg.h.al = 2;    /* 50-line interlace mode */
X        int86(0x10, &rg, &rg);
X    }
X
X    /* initialize the screen pointer array */
X    for (i = 0; i < NROW; i++) {
X        addr.laddr = scadd + (long)(NCOL * i * 2);
X        scptr[i] = addr.paddr;
X    }
X}
X
Xscwrite(row, outstr, forg, bacg)    /* write a line out*/
X
Xint row;    /* row of screen to place outstr on */
Xchar *outstr;    /* string to write out (must be term.t_ncol long) */
Xint forg;    /* forground color of string to write */
Xint bacg;    /* background color */
X
X{
X    int attr;    /* attribute byte mask to place in RAM */
X    int *lnptr;    /* pointer to the destination line */
X    int i;
X
X    /* build the attribute byte and setup the screen pointer */
X#if    COLOR
X    if (dtype != CDMONO)
X        attr = (((ctrans[bacg] & 15) << 4) | (ctrans[forg] & 15)) << 8;
X    else
X        attr = (((bacg & 15) << 4) | (forg & 15)) << 8;
X#else
X    attr = (((bacg & 15) << 4) | (forg & 15)) << 8;
X#endif
X    lnptr = &sline[0];
X    for (i=0; i<term.t_ncol; i++)
X        *lnptr++ = (outstr[i] & 255) | attr;
X
X#if 0    /* Heath/Zenith builds flicker-less CGAs */
X    if (flickcode) {
X        /* wait for vertical retrace to be off */
X        while ((inp(0x3da) & 8))
X            ;
X
X        /* and to be back on */
X        while ((inp(0x3da) & 8) == 0)
X            ;
X    }
X#endif
X
X    /* and send the string out */
X    movmem(&sline[0], scptr[row],term.t_ncol*2);
X}
X
X#if    FLABEL
Xfnclabel(f, n)        /* label a function key */
X
Xint f,n;    /* default flag, numeric argument [unused] */
X
X{
X    /* on machines with no function keys...don't bother */
X    return(TRUE);
X}
X#endif
X#else
Xz309hello()
X{
X}
X#endif
E!O!F
newsize=`wc -c < z309.c`
if [ $newsize -ne 7806 ]
then echo "File z309.c was $newsize bytes, 7806 expected"
fi
    bill davidsen        ([e-mail])
  {chinet | philabs | sesimo}!steinmetz!crdos1!davidsen
"Stupidity, like virtue, is its own reward" -me