===================================================================
RCS file: /cvs/mandoc/roff_term.c,v
retrieving revision 1.5
retrieving revision 1.17
diff -u -p -r1.5 -r1.17
--- mandoc/roff_term.c	2017/05/07 17:31:45	1.5
+++ mandoc/roff_term.c	2018/12/16 00:17:02	1.17
@@ -1,6 +1,6 @@
-/*	$OpenBSD: roff_term.c,v 1.5 2017/05/07 17:31:45 schwarze Exp $ */
+/*	$Id: roff_term.c,v 1.17 2018/12/16 00:17:02 schwarze Exp $ */
 /*
- * Copyright (c) 2010, 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010,2014,2015,2017,2018 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -17,8 +17,10 @@
 #include <sys/types.h>
 
 #include <assert.h>
-#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
 
+#include "mandoc.h"
 #include "roff.h"
 #include "out.h"
 #include "term.h"
@@ -28,17 +30,26 @@
 typedef	void	(*roff_term_pre_fp)(ROFF_TERM_ARGS);
 
 static	void	  roff_term_pre_br(ROFF_TERM_ARGS);
+static	void	  roff_term_pre_ce(ROFF_TERM_ARGS);
 static	void	  roff_term_pre_ft(ROFF_TERM_ARGS);
 static	void	  roff_term_pre_ll(ROFF_TERM_ARGS);
+static	void	  roff_term_pre_mc(ROFF_TERM_ARGS);
+static	void	  roff_term_pre_po(ROFF_TERM_ARGS);
 static	void	  roff_term_pre_sp(ROFF_TERM_ARGS);
 static	void	  roff_term_pre_ta(ROFF_TERM_ARGS);
+static	void	  roff_term_pre_ti(ROFF_TERM_ARGS);
 
 static	const roff_term_pre_fp roff_term_pre_acts[ROFF_MAX] = {
 	roff_term_pre_br,  /* br */
+	roff_term_pre_ce,  /* ce */
 	roff_term_pre_ft,  /* ft */
-	roff_term_pre_ll,  /* ft */
+	roff_term_pre_ll,  /* ll */
+	roff_term_pre_mc,  /* mc */
+	roff_term_pre_po,  /* po */
+	roff_term_pre_ce,  /* rj */
 	roff_term_pre_sp,  /* sp */
 	roff_term_pre_ta,  /* ta */
+	roff_term_pre_ti,  /* ti */
 };
 
 
@@ -54,31 +65,71 @@ roff_term_pre_br(ROFF_TERM_ARGS)
 {
 	term_newln(p);
 	if (p->flags & TERMP_BRIND) {
-		p->offset = p->rmargin;
-		p->rmargin = p->maxrmargin;
+		p->tcol->offset = p->tcol->rmargin;
+		p->tcol->rmargin = p->maxrmargin;
 		p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
 	}
 }
 
 static void
+roff_term_pre_ce(ROFF_TERM_ARGS)
+{
+	const struct roff_node	*nc1, *nc2;
+	size_t			 len, lm;
+
+	roff_term_pre_br(p, n);
+	lm = p->tcol->offset;
+	nc1 = n->child->next;
+	while (nc1 != NULL) {
+		nc2 = nc1;
+		len = 0;
+		do {
+			if (nc2->type == ROFFT_TEXT) {
+				if (len)
+					len++;
+				len += term_strlen(p, nc2->string);
+			}
+			nc2 = nc2->next;
+		} while (nc2 != NULL && (nc2->type != ROFFT_TEXT ||
+		    (nc2->flags & NODE_LINE) == 0));
+		p->tcol->offset = len >= p->tcol->rmargin ? 0 :
+		    lm + len >= p->tcol->rmargin ? p->tcol->rmargin - len :
+		    n->tok == ROFF_rj ? p->tcol->rmargin - len :
+		    (lm + p->tcol->rmargin - len) / 2;
+		while (nc1 != nc2) {
+			if (nc1->type == ROFFT_TEXT)
+				term_word(p, nc1->string);
+			else
+				roff_term_pre(p, nc1);
+			nc1 = nc1->next;
+		}
+		p->flags |= TERMP_NOSPACE;
+		term_flushln(p);
+	}
+	p->tcol->offset = lm;
+}
+
+static void
 roff_term_pre_ft(ROFF_TERM_ARGS)
 {
-	switch (*n->child->string) {
-	case '4':
-	case '3':
-	case 'B':
+	const char	*cp;
+
+	cp = n->child->string;
+	switch (mandoc_font(cp, (int)strlen(cp))) {
+	case ESCAPE_FONTBOLD:
 		term_fontrepl(p, TERMFONT_BOLD);
 		break;
-	case '2':
-	case 'I':
+	case ESCAPE_FONTITALIC:
 		term_fontrepl(p, TERMFONT_UNDER);
 		break;
-	case 'P':
+	case ESCAPE_FONTBI:
+		term_fontrepl(p, TERMFONT_BI);
+		break;
+	case ESCAPE_FONTPREV:
 		term_fontlast(p);
 		break;
-	case '1':
-	case 'C':
-	case 'R':
+	case ESCAPE_FONTROMAN:
+	case ESCAPE_FONTCW:
 		term_fontrepl(p, TERMFONT_NONE);
 		break;
 	default:
@@ -93,13 +144,50 @@ roff_term_pre_ll(ROFF_TERM_ARGS)
 }
 
 static void
+roff_term_pre_mc(ROFF_TERM_ARGS)
+{
+	if (p->col) {
+		p->flags |= TERMP_NOBREAK;
+		term_flushln(p);
+		p->flags &= ~(TERMP_NOBREAK | TERMP_NOSPACE);
+	}
+	if (n->child != NULL) {
+		p->mc = n->child->string;
+		p->flags |= TERMP_NEWMC;
+	} else
+		p->flags |= TERMP_ENDMC;
+}
+
+static void
+roff_term_pre_po(ROFF_TERM_ARGS)
+{
+	struct roffsu	 su;
+	static int	 po, polast;
+	int		 ponew;
+
+	if (n->child != NULL &&
+	    a2roffsu(n->child->string, &su, SCALE_EM) != NULL) {
+		ponew = term_hen(p, &su);
+		if (*n->child->string == '+' ||
+		    *n->child->string == '-')
+			ponew += po;
+	} else
+		ponew = polast;
+	polast = po;
+	po = ponew;
+
+	ponew = po - polast + (int)p->tcol->offset;
+	p->tcol->offset = ponew > 0 ? ponew : 0;
+}
+
+static void
 roff_term_pre_sp(ROFF_TERM_ARGS)
 {
 	struct roffsu	 su;
 	int		 len;
 
 	if (n->child != NULL) {
-		if (a2roffsu(n->child->string, &su, SCALE_VS) == 0)
+		if (a2roffsu(n->child->string, &su, SCALE_VS) == NULL)
 			su.scale = 1.0;
 		len = term_vspan(p, &su);
 	} else
@@ -120,4 +208,44 @@ roff_term_pre_ta(ROFF_TERM_ARGS)
 	term_tab_set(p, NULL);
 	for (n = n->child; n != NULL; n = n->next)
 		term_tab_set(p, n->string);
+}
+
+static void
+roff_term_pre_ti(ROFF_TERM_ARGS)
+{
+	struct roffsu	 su;
+	const char	*cp;
+	int		 len, sign;
+
+	roff_term_pre_br(p, n);
+
+	if (n->child == NULL)
+		return;
+	cp = n->child->string;
+	if (*cp == '+') {
+		sign = 1;
+		cp++;
+	} else if (*cp == '-') {
+		sign = -1;
+		cp++;
+	} else
+		sign = 0;
+
+	if (a2roffsu(cp, &su, SCALE_EM) == NULL)
+		return;
+	len = term_hen(p, &su);
+
+	if (sign == 0) {
+		p->ti = len - p->tcol->offset;
+		p->tcol->offset = len;
+	} else if (sign == 1) {
+		p->ti = len;
+		p->tcol->offset += len;
+	} else if ((size_t)len < p->tcol->offset) {
+		p->ti = -len;
+		p->tcol->offset -= len;
+	} else {
+		p->ti = -p->tcol->offset;
+		p->tcol->offset = 0;
+	}
 }