/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2017 Gary Mills
 * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */

/*
 * University Copyright- Copyright (c) 1982, 1986, 1988
 * The Regents of the University of California
 * All Rights Reserved
 *
 * University Acknowledgment- Portions of this document are derived from
 * software developed by the University of California, Berkeley, and its
 * contributors.
 */

#include "tdef.h"
#include "tw.h"
#include "ext.h"
#include <ctype.h>

/*
 * n6.c -- width functions, sizes and fonts
*/

int     bdtab[NFONT+1] ={ 0, 0, 0, 3, 3, 0, };
int     sbold = 0;
int     fontlab[NFONT+1] = { 0, 'R', 'I', 'B', PAIR('B','I'), 'S', 0 };

extern  int     nchtab;

int
width(j)
tchar j;
{
        int     i, k;

        if (j & (ZBIT|MOT)) {
                if (iszbit(j))
                        return(0);
                if (isvmot(j))
                        return(0);
                k = absmot(j);
                if (isnmot(j))
                        k = -k;
                return(k);
        }
        i = cbits(j);
        if (i < ' ') {
                if (i == '\b')
                        return(-widthp);
                if (i == PRESC)
                        i = eschar;
                else if (iscontrol(i))
                        return(0);
        }
        if (i==ohc)
                return(0);
#ifdef EUC
#ifdef NROFF
        if (multi_locale) {
                if ((j & MBMASK) || (j & CSMASK)) {
                        switch(j & MBMASK) {
                                case BYTE_CHR:
                                case LASTOFMB:
                                        k = t.Char * csi_width[cs(j)];
                                        break;
                                default:
                                        k = 0;
                                        break;
                        }
                        widthp = k;
                        return(k);
                }
        }
        i &= 0x1ff;
#endif /* NROFF */
#endif /* EUC */
        i = trtab[i];
        if (i < 32)
                return(0);
        k = t.width[i] * t.Char;
        widthp = k;
        return(k);
}


tchar setch()
{
        int     j;
        char    temp[10];
        char    *s;

        s = temp;
        if ((*s++ = getach()) == 0 || (*s++ = getach()) == 0)
                return(0);
        *s = '\0';
        if ((j = findch(temp)) > 0)
                return j | chbits;
        else
                return 0;
}

tchar setabs()          /* set absolute char from \C'...' */
{                       /* for now, a no-op */
        int i, n, nf;

        getch();
        n = 0;
        n = inumb(&n);
        getch();
        if (nonumb)
                return 0;
        return n + nchtab + _SPECCHAR_ST;
}

int
findft(i)
int     i;
{
        int     k;

        if ((k = i - '0') >= 0 && k <= nfonts && k < smnt)
                return(k);
        for (k = 0; fontlab[k] != i; k++)
                if (k > nfonts)
                        return(-1);
        return(k);
}

int
caseps()
{
        return (0);
}

int
mchbits()
{
        chbits = 0;
        setfbits(chbits, font);
        sps = width(' ' | chbits);

        return (0);
}


int
setps()
{
        int     i, j;

        i = cbits(getch());
        if (ischar(i) && isdigit(i)) {          /* \sd or \sdd */
                i -= '0';
                if (i == 0)             /* \s0 */
                        ;
                else if (i <= 3 && ischar(j = cbits(ch = getch())) &&
                    isdigit(j)) {       /* \sdd */
                        ch = 0;
                }
        } else if (i == '(') {          /* \s(dd */
                getch();
                getch();
        } else if (i == '+' || i == '-') {      /* \s+, \s- */
                j = cbits(getch());
                if (ischar(j) && isdigit(j)) {          /* \s+d, \s-d */
                        ;
                } else if (j == '(') {          /* \s+(dd, \s-(dd */
                        getch();
                        getch();
                }
        }

        return (0);
}


tchar setht()           /* set character height from \H'...' */
{
        tchar c;

        getch();
        (void) inumb(&apts);
        getch();
        return(0);
}


tchar setslant()                /* set slant from \S'...' */
{
        int     n;
        tchar c;

        getch();
        n = 0;
        n = inumb(&n);
        getch();
        return(0);
}


int
caseft()
{
        skip();
        setfont(1);

        return (0);
}


int
setfont(a)
int     a;
{
        int     i, j;

        if (a)
                i = getrq();
        else
                i = getsn();
        if (!i || i == 'P') {
                j = font1;
                goto s0;
        }
        if (i == 'S' || i == '0')
                return (0);
        if ((j = findft(i, fontlab)) == -1)
                return (0);
s0:
        font1 = font;
        font = j;
        mchbits();

        return (0);
}


int
setwd()
{
        int     base, wid;
        tchar i;
        int     delim, emsz, k;
        int     savhp, savapts, savapts1, savfont, savfont1, savpts, savpts1;

        base = numtab[ST].val = wid = numtab[CT].val = 0;
        if (ismot(i = getch()))
                return (0);
        delim = cbits(i);
        savhp = numtab[HP].val;
        numtab[HP].val = 0;
        savapts = apts;
        savapts1 = apts1;
        savfont = font;
        savfont1 = font1;
        savpts = pts;
        savpts1 = pts1;
        setwdf++;
        while (cbits(i = getch()) != delim && !nlflg) {
                k = width(i);
                wid += k;
                numtab[HP].val += k;
                if (!ismot(i)) {
                        emsz = (INCH * pts + 36) / 72;
                } else if (isvmot(i)) {
                        k = absmot(i);
                        if (isnmot(i))
                                k = -k;
                        base -= k;
                        emsz = 0;
                } else
                        continue;
                if (base < numtab[SB].val)
                        numtab[SB].val = base;
                if ((k = base + emsz) > numtab[ST].val)
                        numtab[ST].val = k;
        }
        setn1(wid, 0, (tchar) 0);
        numtab[HP].val = savhp;
        apts = savapts;
        apts1 = savapts1;
        font = savfont;
        font1 = savfont1;
        pts = savpts;
        pts1 = savpts1;
        mchbits();
        setwdf = 0;

        return (0);
}


tchar vmot()
{
        dfact = lss;
        vflag++;
        return(mot());
}


tchar hmot()
{
        dfact = EM;
        return(mot());
}


tchar mot()
{
        int j, n;
        tchar i;

        j = HOR;
        getch(); /*eat delim*/
        if (n = atoi()) {
                if (vflag)
                        j = VERT;
                i = makem(quant(n, j));
        } else
                i = 0;
        getch();
        vflag = 0;
        dfact = 1;
        return(i);
}


tchar sethl(k)
int     k;
{
        int     j;
        tchar i;

        j = t.Halfline;
        if (k == 'u')
                j = -j;
        else if (k == 'r')
                j = -2 * j;
        vflag++;
        i = makem(j);
        vflag = 0;
        return(i);
}


tchar makem(i)
int     i;
{
        tchar j;

        if ((j = i) < 0)
                j = -j;
        j |= MOT;
        if (i < 0)
                j |= NMOT;
        if (vflag)
                j |= VMOT;
        return(j);
}


tchar getlg(i)
tchar   i;
{
        return(i);
}


int
caselg()
{
        return (0);
}


int
casefp()
{
        int     i, j;

        skip();
        if ((i = cbits(getch()) - '0') < 0 || i > nfonts)
                return (0);
        if (skip() || !(j = getrq()))
                return (0);
        fontlab[i] = j;

        return (0);
}


int
casecs()
{
        return (0);
}


int
casebd()
{
        int     i, j, k;

        k = 0;
bd0:
        if (skip() || !(i = getrq()) || (j = findft(i)) == -1) {
                if (k)
                        goto bd1;
                else
                        return (0);
        }
        if (j == smnt) {
                k = smnt;
                goto bd0;
        }
        if (k) {
                sbold = j;
                j = k;
        }
bd1:
        skip();
        noscale++;
        bdtab[j] = atoi();
        noscale = 0;

        return (0);
}


int
casevs()
{
        int     i;

        skip();
        vflag++;
        dfact = INCH; /*default scaling is points!*/
        dfactd = 72;
        res = VERT;
        i = inumb(&lss);
        if (nonumb)
                i = lss1;
        if (i < VERT)
                i = VERT;       /* was VERT */
        lss1 = lss;
        lss = i;

        return (0);
}



int
casess()
{
        return (0);
}


tchar xlss()
{
        /* stores \x'...' into
         * two successive tchars.
         * the first contains HX, the second the value,
         * encoded as a vertical motion.
         * decoding is done in n2.c by pchar().
         */
        int     i;

        getch();
        dfact = lss;
        i = quant(atoi(), VERT);
        dfact = 1;
        getch();
        if (i >= 0)
                *pbp++ = MOT | VMOT | i;
        else
                *pbp++ = MOT | VMOT | NMOT | -i;
        return(HX);
}