Change how -Thtml behaves with tables: use multiple rows, with widths

set by COL, until an external macro is encountered.  At this point in
time, close out the table and process the macro.  When the first table
row is again re-encountered, re-start the table.  This requires a bit of
tracking added to "struct html", but the change is very small and
follows the logic of meta-fonts.  This all follows a bug-report by
joerg@.

1 files changed, 62 insertions, 45 deletions

diff --git a/tbl_html.c b/tbl_html.c
index ebad7c77..68d3f9c5 100644
--- a/tbl_html.c
+++ b/tbl_html.c
@@ -1,4 +1,4 @@
-/*	$Id: tbl_html.c,v 1.6 2011/01/11 14:12:01 kristaps Exp $ */
+/*	$Id: tbl_html.c,v 1.7 2011/01/13 14:30:13 kristaps Exp $ */
 /*
  * Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -27,6 +27,7 @@
 #include "out.h"
 #include "html.h"
 
+static	void	 html_tblopen(struct html *, const struct tbl_span *);
 static	size_t	 html_tbl_len(size_t, void *);
 static	size_t	 html_tbl_strlen(const char *, void *);
 
@@ -46,89 +47,105 @@ html_tbl_strlen(const char *p, void *arg)
 	return(strlen(p));
 }
 
+static void
+html_tblopen(struct html *h, const struct tbl_span *sp)
+{
+	const struct tbl_head *hp;
+	struct htmlpair	 tag;
+	struct roffsu	 su;
+	struct roffcol	*col;
+
+	if (TBL_SPAN_FIRST & sp->flags) {
+		h->tbl.len = html_tbl_len;
+		h->tbl.slen = html_tbl_strlen;
+		tblcalc(&h->tbl, sp);
+	}
+
+	assert(NULL == h->tblt);
+	PAIR_CLASS_INIT(&tag, "tbl");
+	h->tblt = print_otag(h, TAG_TABLE, 1, &tag);
+
+	for (hp = sp->head; hp; hp = hp->next) {
+		bufinit(h);
+		col = &h->tbl.cols[hp->ident];
+		SCALE_HS_INIT(&su, col->width);
+		bufcat_su(h, "width", &su);
+		PAIR_STYLE_INIT(&tag, h);
+		print_otag(h, TAG_COL, 1, &tag);
+	}
+
+	print_otag(h, TAG_TBODY, 0, NULL);
+}
+
+void
+print_tblclose(struct html *h)
+{
+
+	assert(h->tblt);
+	print_tagq(h, h->tblt);
+	h->tblt = NULL;
+}
+
 void
 print_tbl(struct html *h, const struct tbl_span *sp)
 {
 	const struct tbl_head *hp;
 	const struct tbl_dat *dp;
-	struct tag	*tt;
 	struct htmlpair	 tag;
-	struct roffsu	 su;
-	struct roffcol	*col;
+	struct tag	*tt;
 
 	/* Inhibit printing of spaces: we do padding ourselves. */
 
+	if (NULL == h->tblt)
+		html_tblopen(h, sp);
+
+	assert(h->tblt);
+
 	h->flags |= HTML_NONOSPACE;
 	h->flags |= HTML_NOSPACE;
 
-	/* First pass: calculate widths. */
-
-	if (TBL_SPAN_FIRST & sp->flags) {
-		h->tbl.len = html_tbl_len;
-		h->tbl.slen = html_tbl_strlen;
-		tblcalc(&h->tbl, sp);
-	}
+	tt = print_otag(h, TAG_TR, 0, NULL);
 
 	switch (sp->pos) {
 	case (TBL_SPAN_HORIZ):
 		/* FALLTHROUGH */
 	case (TBL_SPAN_DHORIZ):
+		PAIR_INIT(&tag, ATTR_COLSPAN, "0");
+		print_otag(h, TAG_TD, 1, &tag);
 		break;
 	default:
-		PAIR_CLASS_INIT(&tag, "tbl");
-		print_otag(h, TAG_TABLE, 1, &tag);
-		print_otag(h, TAG_TR, 0, NULL);
-
-		/* Iterate over template headers. */
-
 		dp = sp->first;
 		for (hp = sp->head; hp; hp = hp->next) {
+			print_stagq(h, tt);
+			print_otag(h, TAG_TD, 0, NULL);
+
 			switch (hp->pos) {
 			case (TBL_HEAD_VERT):
 				/* FALLTHROUGH */
 			case (TBL_HEAD_DVERT):
 				continue;
 			case (TBL_HEAD_DATA):
-				break;
-			}
-
-			/*
-			 * For the time being, use the simplest possible
-			 * table styling: setting the widths of data
-			 * columns.
-			 */
-
-			col = &h->tbl.cols[hp->ident];
-			SCALE_HS_INIT(&su, col->width);
-			bufcat_su(h, "width", &su);
-			PAIR_STYLE_INIT(&tag, h);
-			tt = print_otag(h, TAG_TD, 1, &tag);
-
-			if (dp) {
-				switch (dp->layout->pos) {
-				case (TBL_CELL_DOWN):
-					break;
-				default:
-					if (NULL == dp->string)
-						break;
-					print_text(h, dp->string);
+				if (NULL == dp)
 					break;
-				}
+				if (TBL_CELL_DOWN != dp->layout->pos)
+					if (dp->string)
+						print_text(h, dp->string);
 				dp = dp->next;
+				break;
 			}
-
-			print_tagq(h, tt);
 		}
 		break;
 	}
 
-	h->flags &= ~HTML_NONOSPACE;
+	print_tagq(h, tt);
 
-	/* Close out column specifiers on the last span. */
+	h->flags &= ~HTML_NONOSPACE;
 
 	if (TBL_SPAN_LAST & sp->flags) {
 		assert(h->tbl.cols);
 		free(h->tbl.cols);
 		h->tbl.cols = NULL;
+		print_tblclose(h);
 	}
+
 }