+#ifndef lint
+static char sccsid[] = "@(#)n5.c 4.1 %G%";
+#endif lint
+
+#include "tdef.h"
+#include <sgtty.h>
+extern
+#include "d.h"
+extern
+#include "v.h"
+#include "sdef.h"
+
+/*
+troff5.c
+
+misc processing requests
+*/
+
+extern int inchar[LNSIZE], *pinchar; /* XXX */
+extern struct s *frame;
+extern struct s *litlev;
+extern filep ip;
+extern filep offset;
+
+extern int ascii;
+extern int nonumb;
+extern int admod;
+extern int ad;
+extern int fi;
+extern int cc;
+extern int c2;
+extern int ohc;
+extern int tabc;
+extern int dotc;
+extern int pendnf;
+extern int hyf;
+extern int ce;
+extern int po;
+extern int po1;
+extern int nc;
+extern int in;
+extern int un;
+extern int un1;
+extern int in1;
+extern int ll;
+extern int ll1;
+extern int lt;
+extern int lt1;
+extern int nlist[NTRAP];
+extern int mlist[NTRAP];
+extern int lgf;
+extern int pl;
+extern int npn;
+extern int npnflg;
+extern int copyf;
+extern char nextf[];
+extern int trap;
+extern int lss;
+extern int em;
+extern int evlist[EVLSZ];
+extern int evi;
+extern int ibf;
+extern int ev;
+extern int ch;
+extern int nflush;
+extern int tty;
+extern struct sgttyb ttys;
+extern int quiet;
+extern int iflg;
+extern int eschar;
+extern int lit;
+extern int ls;
+extern int ls1;
+extern int tabtab[];
+extern char trtab[];
+extern int ul;
+extern int cu;
+extern int sfont;
+extern int font;
+extern int fontlab[];
+extern int it;
+extern int itmac;
+extern int noscale;
+extern int ic;
+extern int icf;
+extern int ics;
+extern int *vlist;
+extern int sv;
+extern int esc;
+extern int nn;
+extern int nms;
+extern int ndf;
+extern int lnmod;
+extern int ni;
+extern int lnsize;
+extern int nb;
+extern int nlflg;
+extern int apts, apts1, pts, pts1, font, font1;
+extern int ulfont;
+extern int ulbit;
+extern int error;
+extern int nmbits;
+extern int chbits;
+extern int tdelim;
+extern int xxx;
+int iflist[NIF];
+int ifx;
+
+casead(){
+ register i;
+
+ ad = 1;
+ /*leave admod alone*/
+ if(skip())return;
+ switch(i = getch() & CMASK){
+ case 'r': /*right adj, left ragged*/
+ admod = 2;
+ break;
+ case 'l': /*left adj, right ragged*/
+ admod = ad = 0; /*same as casena*/
+ break;
+ case 'c': /*centered adj*/
+ admod = 1;
+ break;
+ case 'b': case 'n':
+ admod = 0;
+ break;
+ case '0': case '2': case '4':
+ ad = 0;
+ case '1': case '3': case '5':
+ admod = (i - '0')/2;
+ }
+}
+casena(){
+ ad = 0;
+}
+casefi(){
+ tbreak();
+ fi++;
+ pendnf = 0;
+ lnsize = LNSIZE;
+}
+casenf(){
+ tbreak();
+ fi = 0;
+/* can't do while oline is only LNSIZE
+ lnsize = LNSIZE + WDSIZE;
+*/
+}
+casers(){
+ dip->nls = 0;
+}
+casens(){
+ dip->nls++;
+}
+chget(c)
+int c;
+{
+ register i;
+
+ if(skip() ||
+ ((i = getch()) & MOT) ||
+ ((i&CMASK) == ' ') ||
+ ((i&CMASK) == '\n')){
+ ch = i;
+ return(c);
+ }else return(i & BMASK);
+}
+casecc(){
+ cc = chget('.');
+}
+casec2(){
+ c2 = chget('\'');
+}
+casehc(){
+ ohc = chget(OHC);
+}
+casetc(){
+ tabc = chget(0);
+}
+caselc(){
+ dotc = chget(0);
+}
+casehy(){
+ register i;
+
+ hyf = 1;
+ if(skip())return;
+ noscale++;
+ i = atoi();
+ noscale = 0;
+ if(nonumb)return;
+ hyf = max(i,0);
+}
+casenh(){
+ hyf = 0;
+}
+max(aa,bb)
+int aa,bb;
+{
+ if(aa>bb)return(aa);
+ else return(bb);
+}
+casece(){
+ register i;
+
+ noscale++;
+ skip();
+ i = max(atoi(),0);
+ if(nonumb)i = 1;
+ tbreak();
+ ce = i;
+ noscale = 0;
+}
+casein(){
+ register i;
+
+ if(skip())i = in1;
+ else i = max(hnumb(&in),0);
+ tbreak();
+ in1 = in;
+ in = i;
+ if(!nc){
+ un = in;
+ setnel();
+ }
+}
+casell(){
+ register i;
+
+ if(skip())i = ll1;
+ else i = max(hnumb(&ll),INCH/10);
+ ll1 = ll;
+ ll = i;
+ setnel();
+}
+caselt(){
+ register i;
+
+ if(skip())i = lt1;
+ else i = max(hnumb(<),0);
+ lt1 = lt;
+ lt = i;
+}
+caseti(){
+ register i;
+
+ if(skip())return;
+ i = max(hnumb(&in),0);
+ tbreak();
+ un1 = i;
+ setnel();
+}
+casels(){
+ register i;
+
+ noscale++;
+ if(skip())i = ls1;
+ else i = max(inumb(&ls),1);
+ ls1 = ls;
+ ls = i;
+ noscale = 0;
+}
+casepo(){
+ register i;
+
+ if(skip())i = po1;
+ else i = max(hnumb(&po),0);
+ po1 = po;
+ po = i;
+#ifndef NROFF
+ if(!ascii)esc += po - po1;
+#endif
+}
+casepl(){
+ register i;
+
+ skip();
+ if((i = vnumb(&pl)) == 0)pl = 11 * INCH; /*11in*/
+ else pl = i;
+ if(v.nl > pl)v.nl = pl;
+}
+casewh(){
+ register i, j, k;
+
+ lgf++;
+ skip();
+ i = vnumb((int *)0);
+ if(nonumb)return;
+ skip();
+ j = getrq();
+ if((k=findn(i)) != NTRAP){
+ mlist[k] = j;
+ return;
+ }
+ for(k=0; k<NTRAP; k++)if(mlist[k] == 0)break;
+ if(k == NTRAP){
+ prstrfl("Cannot plant trap.\n");
+ return;
+ }
+ mlist[k] = j;
+ nlist[k] = i;
+}
+casech(){
+ register i, j, k;
+
+ lgf++;
+ skip();
+ if(!(j=getrq()))return;
+ else for(k=0; k<NTRAP; k++)if(mlist[k] == j)break;
+ if(k == NTRAP)return;
+ skip();
+ i = vnumb((int *)0);
+ if(nonumb)mlist[k] = 0;
+ nlist[k] = i;
+}
+findn(i)
+int i;
+{
+ register k;
+
+ for(k=0; k<NTRAP; k++)
+ if((nlist[k] == i) && (mlist[k] != 0))break;
+ return(k);
+}
+casepn(){
+ register i;
+
+ skip();
+ noscale++;
+ i = max(inumb(&v.pn),0);
+ noscale = 0;
+ if(!nonumb){
+ npn = i;
+ npnflg++;
+ }
+}
+casebp(){
+ register i;
+ register struct s *savframe;
+
+ if(dip != d)return;
+ savframe = frame;
+ skip();
+ if((i = inumb(&v.pn)) < 0)i = 0;
+ tbreak();
+ if(!nonumb){
+ npn = i;
+ npnflg++;
+ }else if(dip->nls)return;
+ eject(savframe);
+}
+casetm(x) int x;{
+ register i;
+ char tmbuf[NTM];
+
+ lgf++;
+ copyf++;
+ if(skip() && x)prstrfl("User Abort.");
+ for(i=0; i<NTM-2;)if((tmbuf[i++]=getch()) == '\n')break;
+ if(i == NTM-2)tmbuf[i++] = '\n';
+ tmbuf[i] = 0;
+ prstrfl(tmbuf);
+ copyf--;
+}
+casesp(a)
+int a;
+{
+ register i, j, savlss;
+
+ tbreak();
+ if(dip->nls || trap)return;
+ i = findt1();
+ if(!a){
+ skip();
+ j = vnumb((int *)0);
+ if(nonumb)j = lss;
+ }else j = a;
+ if(j == 0)return;
+ if(i < j)j = i;
+ savlss = lss;
+ if(dip != d)i = dip->dnl; else i = v.nl;
+ if((i + j) < 0)j = -i;
+ lss = j;
+ newline(0);
+ lss = savlss;
+}
+casert(){
+ register a, *p;
+
+ skip();
+ if(dip != d)p = &dip->dnl; else p = &v.nl;
+ a = vnumb(p);
+ if(nonumb)a = dip->mkline;
+ if((a < 0) || (a >= *p))return;
+ nb++;
+ casesp(a - *p);
+}
+caseem(){
+ lgf++;
+ skip();
+ em = getrq();
+}
+casefl(){
+ tbreak();
+ flusho();
+}
+caseev(){
+ register nxev;
+ extern int block;
+
+ if(skip()){
+e0:
+ if(evi == 0)return;
+ nxev = evlist[--evi];
+ goto e1;
+ }
+ noscale++;
+ nxev = atoi();
+ noscale = 0;
+ if(nonumb)goto e0;
+ flushi();
+ if((nxev >= NEV) || (nxev < 0) || (evi >= EVLSZ)){
+ prstrfl("Cannot do ev.\n");
+ if(error)done2(040);else edone(040);
+ return;
+ }
+ evlist[evi++] = ev;
+e1:
+ if(ev == nxev)return;
+ lseek(ibf, (long)(ev*EVS*sizeof(int)), 0);
+ write(ibf,(char *)&block, EVS*sizeof(int));
+ lseek(ibf, (long)(nxev*EVS*sizeof(int)), 0);
+ read(ibf,(char *)&block, EVS*sizeof(int));
+ ev = nxev;
+}
+caseel(){
+ if(--ifx < 0){
+ ifx = 0;
+ iflist[0] = 0;
+ }
+ caseif(2);
+}
+caseie(){
+ if(ifx >= NIF){
+ prstr("if-else overflow.\n");
+ ifx = 0;
+ edone(040);
+ }
+ caseif(1);
+ ifx++;
+}
+caseif(x)
+int x;
+{
+ register i, notflag, true;
+
+ if(x == 2){
+ notflag = 0;
+ true = iflist[ifx];
+ goto i1;
+ }
+ true = 0;
+ skip();
+ if(((i = getch()) & CMASK) == '!'){
+ notflag = 1;
+ }else{
+ notflag = 0;
+ ch = i;
+ }
+ i = atoi();
+ if(!nonumb){
+ if(i > 0)true++;
+ goto i1;
+ }
+ switch((i = getch()) & CMASK){
+ case 'e':
+ if(!(v.pn & 01))true++;
+ break;
+ case 'o':
+ if(v.pn & 01)true++;
+ break;
+#ifdef NROFF
+ case 'n':
+ true++;
+ case 't':
+#endif
+#ifndef NROFF
+ case 't':
+ true++;
+ case 'n':
+#endif
+ case ' ':
+ break;
+ default:
+ true = cmpstr(i);
+ }
+i1:
+ true ^= notflag;
+ if(x == 1)iflist[ifx] = !true;
+ if(true){
+ i2:
+ do{
+ v.hp = 0;
+ pinchar = inchar; /* XXX */
+ }
+ while(((i = getch()) & CMASK) == ' ');
+ if((i & CMASK) == LEFT)goto i2;
+ ch = i;
+ nflush++;
+ }else{
+ copyf++;
+ if(eat(LEFT) == LEFT){
+ while(eatblk(RIGHT,LEFT) != RIGHT)nlflg = 0;
+ }
+ copyf--;
+ }
+}
+eatblk(right,left)
+int right,left;
+{
+ register i;
+
+e0:
+ while(((i = getch() & CMASK) != right) &&
+ (i != left) &&
+ (i != '\n'));
+ if(i == left){
+ while((i=eatblk(right,left)) != right)nlflg = 0;
+ goto e0;
+ }
+ return(i);
+}
+cmpstr(delim)
+int delim;
+{
+ register i, j;
+ register filep p;
+ extern filep alloc();
+ extern filep incoff();
+ filep begin;
+ int cnt, k;
+ int savapts, savapts1, savfont, savfont1,
+ savpts, savpts1;
+
+ if(delim & MOT)return(0);
+ delim &= CMASK;
+ if(dip != d)wbfl();
+ if((offset = begin = alloc()) == (filep)0)return(0);
+ cnt = 0;
+ v.hp = 0;
+ pinchar = inchar; /* XXX */
+ savapts = apts;
+ savapts1 = apts1;
+ savfont = font;
+ savfont1 = font1;
+ savpts = pts;
+ savpts1 = pts1;
+ while(((j = (i=getch()) & CMASK) != delim) && (j != '\n')){
+ wbf(i);
+ cnt++;
+ }
+ wbt(0);
+ k = !cnt;
+ if(nlflg)goto rtn;
+ p = begin;
+ apts = savapts;
+ apts1 = savapts1;
+ font = savfont;
+ font1 = savfont1;
+ pts = savpts;
+ pts1 = savpts1;
+ mchbits();
+ v.hp = 0;
+ pinchar = inchar; /* XXX */
+ while(((j = (i=getch()) & CMASK) != delim) && (j != '\n')){
+ if(rbf0(p) != i){
+ eat(delim);
+ k = 0;
+ break;
+ }
+ p = incoff(p);
+ k = !(--cnt);
+ }
+rtn:
+ apts = savapts;
+ apts1 = savapts1;
+ font = savfont;
+ font1 = savfont1;
+ pts = savpts;
+ pts1 = savpts1;
+ mchbits();
+ offset = dip->op;
+ ffree(begin);
+ return(k);
+}
+caserd(){
+
+ lgf++;
+ skip();
+ getname();
+ if(!iflg){
+ if(quiet){
+ ttys.sg_flags &= ~ECHO;
+ stty(0, &ttys);
+ prstrfl("\a"); /*bell*/
+ }else{
+ if(nextf[0]){
+ prstr(nextf);
+ prstr(":");
+ }else{
+ prstr("\a"); /*bell*/
+ }
+ }
+ }
+ collect();
+ tty++;
+ pushi((filep)-1);
+}
+rdtty(){
+ char onechar;
+
+ onechar = 0;
+ if(read(0, &onechar, 1) == 1){
+ if(onechar == '\n')tty++;
+ else tty = 1;
+ if(tty != 3)return(onechar);
+ }
+ popi();
+ tty = 0;
+ if(quiet){
+ ttys.sg_flags |= ECHO;
+ stty(0, &ttys);
+ }
+ return(0);
+}
+caseec(){
+ eschar = chget('\\');
+}
+caseeo(){
+ eschar = 0;
+}
+caseli(){
+
+ skip();
+ lit = max(inumb((int *)0),1);
+ litlev = frame;
+ if((dip == d) && (v.nl == -1))newline(1);
+}
+caseta(){
+ register i;
+
+ tabtab[0] = nonumb = 0;
+ for(i=0; ((i < (NTAB-1)) && !nonumb); i++){
+ if(skip())break;
+ tabtab[i] = max(hnumb(&tabtab[max(i-1,0)]),0) & TMASK;
+ if(!nonumb) switch(ch & CMASK){
+ case 'C':
+ tabtab[i] |= CTAB;
+ break;
+ case 'R':
+ tabtab[i] |= RTAB;
+ break;
+ default: /*includes L*/
+ break;
+ }
+ nonumb = ch = 0;
+ }
+ tabtab[i] = 0;
+}
+casene(){
+ register i, j;
+
+ skip();
+ i = vnumb((int *)0);
+ if(nonumb)i = lss;
+ if(i > (j = findt1())){
+ i = lss;
+ lss = j;
+ dip->nls = 0;
+ newline(0);
+ lss = i;
+ }
+}
+casetr(){
+ register i, j;
+
+ lgf++;
+ skip();
+ while((i = getch() & CMASK) != '\n'){
+ if((i & MOT) || ((j = getch()) & MOT))return;
+ if((j &= CMASK) == '\n')j = ' ';
+ trtab[i] = j;
+ }
+}
+casecu(){
+ cu++;
+ caseul();
+}
+caseul(){
+ register i;
+
+ noscale++;
+ if(skip())i = 1;
+ else i = atoi();
+ if(ul && (i == 0)){
+ font = sfont;
+ ul = cu = 0;
+ }
+ if(i){
+ if(!ul){
+ sfont = font;
+ font = ulfont;
+ }
+ ul = i;
+ }
+ noscale = 0;
+ mchbits();
+}
+caseuf(){
+ register i, j;
+
+ if(skip() || !(i = getrq()) || (i == 'S') ||
+ ((j = find(i,fontlab)) == -1))
+ ulfont = 1; /*default position 2*/
+ else ulfont = j;
+#ifdef NROFF
+ if(ulfont == 0)ulfont = 1;
+#endif
+ ulbit = ulfont<<9;
+}
+caseit(){
+ register i;
+
+ lgf++;
+ it = itmac = 0;
+ noscale++;
+ skip();
+ i = atoi();
+ skip();
+ if(!nonumb && (itmac = getrq()))it = i;
+ noscale = 0;
+}
+casemc(){
+ register i;
+
+ if(icf > 1)ic = 0;
+ icf = 0;
+ if(skip())return;
+ ic = getch();
+ icf = 1;
+ skip();
+ i = max(hnumb((int *)0),0);
+ if(!nonumb)ics = i;
+}
+casemk(){
+ register i, j;
+
+ if(dip != d)j = dip->dnl; else j = v.nl;
+ if(skip()){
+ dip->mkline = j;
+ return;
+ }
+ if((i = getrq()) == 0)return;
+ vlist[findr(i)] = j;
+}
+casesv(){
+ register i;
+
+ skip();
+ if((i = vnumb((int *)0)) < 0)return;
+ if(nonumb)i = 1;
+ sv += i;
+ caseos();
+}
+caseos(){
+ register savlss;
+
+ if(sv <= findt1()){
+ savlss = lss;
+ lss = sv;
+ newline(0);
+ lss = savlss;
+ sv = 0;
+ }
+}
+casenm(){
+ register i;
+
+ lnmod = nn = 0;
+ if(skip())return;
+ lnmod++;
+ noscale++;
+ i = inumb(&v.ln);
+ if(!nonumb)v.ln = max(i,0);
+ getnm(&ndf,1);
+ getnm(&nms,0);
+ getnm(&ni,0);
+ noscale = 0;
+ nmbits = chbits;
+}
+getnm(p,min)
+int *p, min;
+{
+ register i;
+
+ eat(' ');
+ if(skip())return;
+ i = atoi();
+ if(nonumb)return;
+ *p = max(i,min);
+}
+casenn(){
+ noscale++;
+ skip();
+ nn = max(atoi(),1);
+ noscale = 0;
+}
+caseab(){
+ dummy();
+ casetm(1);
+ done2(0);
+}
projects / unix-history / commitdiff