X-Git-Url: https://git.cameronkatri.com/mandoc.git/blobdiff_plain/22cc08db2d7a9dd7b80cd0a8cff26bc3d9bfabcf..3d673e1a84f7b7f238eeab1d52469fc06197bce1:/html.c?ds=sidebyside

diff --git a/html.c b/html.c
index aa83bc28..da980857 100644
--- a/html.c
+++ b/html.c
@@ -1,6 +1,7 @@
-/*	$Id: html.c,v 1.98 2010/04/08 07:05:38 kristaps Exp $ */
+/*	$Id: html.c,v 1.184 2014/12/20 00:20:11 schwarze Exp $ */
 /*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2011, 2012, 2013, 2014 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
@@ -14,9 +15,7 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
-#ifdef HAVE_CONFIG_H
 #include "config.h"
-#endif
 
 #include <sys/types.h>
 
@@ -29,13 +28,12 @@
 #include <string.h>
 #include <unistd.h>
 
+#include "mandoc.h"
+#include "mandoc_aux.h"
 #include "out.h"
-#include "chars.h"
 #include "html.h"
 #include "main.h"
 
-#define	UNCONST(a)	((void *)(uintptr_t)(const void *)(a))
-
 struct	htmldata {
 	const char	 *name;
 	int		  flags;
@@ -54,87 +52,114 @@ static	const struct htmldata htmltags[TAG_MAX] = {
 	{"h1",		0}, /* TAG_H1 */
 	{"h2",		0}, /* TAG_H2 */
 	{"span",	0}, /* TAG_SPAN */
-	{"link",	HTML_CLRLINE | HTML_NOSTACK}, /* TAG_LINK */
+	{"link",	HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_LINK */
 	{"br",		HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_BR */
 	{"a",		0}, /* TAG_A */
 	{"table",	HTML_CLRLINE}, /* TAG_TABLE */
+	{"tbody",	HTML_CLRLINE}, /* TAG_TBODY */
 	{"col",		HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_COL */
 	{"tr",		HTML_CLRLINE}, /* TAG_TR */
 	{"td",		HTML_CLRLINE}, /* TAG_TD */
 	{"li",		HTML_CLRLINE}, /* TAG_LI */
 	{"ul",		HTML_CLRLINE}, /* TAG_UL */
 	{"ol",		HTML_CLRLINE}, /* TAG_OL */
+	{"dl",		HTML_CLRLINE}, /* TAG_DL */
+	{"dt",		HTML_CLRLINE}, /* TAG_DT */
+	{"dd",		HTML_CLRLINE}, /* TAG_DD */
+	{"blockquote",	HTML_CLRLINE}, /* TAG_BLOCKQUOTE */
+	{"pre",		HTML_CLRLINE }, /* TAG_PRE */
+	{"b",		0 }, /* TAG_B */
+	{"i",		0 }, /* TAG_I */
+	{"code",	0 }, /* TAG_CODE */
+	{"small",	0 }, /* TAG_SMALL */
+	{"style",	HTML_CLRLINE}, /* TAG_STYLE */
+	{"math",	HTML_CLRLINE}, /* TAG_MATH */
+	{"mrow",	0}, /* TAG_MROW */
+	{"mi",		0}, /* TAG_MI */
+	{"mo",		0}, /* TAG_MO */
+	{"msup",	0}, /* TAG_MSUP */
+	{"msub",	0}, /* TAG_MSUB */
+	{"msubsup",	0}, /* TAG_MSUBSUP */
+	{"mfrac",	0}, /* TAG_MFRAC */
+	{"msqrt",	0}, /* TAG_MSQRT */
+	{"mfenced",	0}, /* TAG_MFENCED */
+	{"mtable",	0}, /* TAG_MTABLE */
+	{"mtr",		0}, /* TAG_MTR */
+	{"mtd",		0}, /* TAG_MTD */
+	{"munderover",	0}, /* TAG_MUNDEROVER */
+	{"munder",	0}, /* TAG_MUNDER*/
+	{"mover",	0}, /* TAG_MOVER*/
 };
 
-static	const char	*const htmlfonts[HTMLFONT_MAX] = {
-	"roman",
-	"bold",
-	"italic"
+static	const char	*const htmlattrs[ATTR_MAX] = {
+	"name", /* ATTR_NAME */
+	"rel", /* ATTR_REL */
+	"href", /* ATTR_HREF */
+	"type", /* ATTR_TYPE */
+	"media", /* ATTR_MEDIA */
+	"class", /* ATTR_CLASS */
+	"style", /* ATTR_STYLE */
+	"id", /* ATTR_ID */
+	"colspan", /* ATTR_COLSPAN */
+	"charset", /* ATTR_CHARSET */
+	"open", /* ATTR_OPEN */
+	"close", /* ATTR_CLOSE */
+	"mathvariant", /* ATTR_MATHVARIANT */
 };
 
-static	const char	*const htmlattrs[ATTR_MAX] = {
-	"http-equiv",
-	"content",
-	"name",
-	"rel",
-	"href",
-	"type",
-	"media",
-	"class",
-	"style",
-	"width",
-	"valign",
-	"target",
-	"id",
-	"summary",
+static	const char	*const roffscales[SCALE_MAX] = {
+	"cm", /* SCALE_CM */
+	"in", /* SCALE_IN */
+	"pc", /* SCALE_PC */
+	"pt", /* SCALE_PT */
+	"em", /* SCALE_EM */
+	"em", /* SCALE_MM */
+	"ex", /* SCALE_EN */
+	"ex", /* SCALE_BU */
+	"em", /* SCALE_VS */
+	"ex", /* SCALE_FS */
 };
 
-static	void		  print_spec(struct html *, const char *, size_t);
-static	void		  print_res(struct html *, const char *, size_t);
-static	void		  print_ctag(struct html *, enum htmltag);
-static	void		  print_doctype(struct html *);
-static	void		  print_xmltype(struct html *);
-static	int		  print_encode(struct html *, const char *, int);
-static	void		  print_metaf(struct html *, enum roffdeco);
-static	void		  print_attr(struct html *, 
-				const char *, const char *);
-static	void		 *ml_alloc(char *, enum htmltype);
+static	void	 bufncat(struct html *, const char *, size_t);
+static	void	 print_ctag(struct html *, struct tag *);
+static	int	 print_escape(char);
+static	int	 print_encode(struct html *, const char *, int);
+static	void	 print_metaf(struct html *, enum mandoc_esc);
+static	void	 print_attr(struct html *, const char *, const char *);
 
 
-static void *
-ml_alloc(char *outopts, enum htmltype type)
+void *
+html_alloc(const struct mchars *mchars, char *outopts)
 {
 	struct html	*h;
-	const char	*toks[4];
+	const char	*toks[5];
 	char		*v;
 
 	toks[0] = "style";
 	toks[1] = "man";
 	toks[2] = "includes";
-	toks[3] = NULL;
+	toks[3] = "fragment";
+	toks[4] = NULL;
 
-	h = calloc(1, sizeof(struct html));
-	if (NULL == h) {
-		perror(NULL);
-		exit(EXIT_FAILURE);
-	}
+	h = mandoc_calloc(1, sizeof(struct html));
 
-	h->type = type;
 	h->tags.head = NULL;
-	h->ords.head = NULL;
-	h->symtab = chars_init(CHARS_HTML);
+	h->symtab = mchars;
 
 	while (outopts && *outopts)
 		switch (getsubopt(&outopts, UNCONST(toks), &v)) {
-		case (0):
+		case 0:
 			h->style = v;
 			break;
-		case (1):
+		case 1:
 			h->base_man = v;
 			break;
-		case (2):
+		case 2:
 			h->base_includes = v;
 			break;
+		case 3:
+			h->oflags |= HTML_FRAGMENT;
+			break;
 		default:
 			break;
 		}
@@ -142,64 +167,43 @@ ml_alloc(char *outopts, enum htmltype type)
 	return(h);
 }
 
-void *
-html_alloc(char *outopts)
-{
-
-	return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
-}
-
-
-void *
-xhtml_alloc(char *outopts)
-{
-
-	return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
-}
-
-
 void
 html_free(void *p)
 {
 	struct tag	*tag;
-	struct ord	*ord;
 	struct html	*h;
 
 	h = (struct html *)p;
 
-	while ((ord = h->ords.head) != NULL) { 
-		h->ords.head = ord->next;
-		free(ord);
-	}
-
 	while ((tag = h->tags.head) != NULL) {
-		h->tags.head = tag->next;	
+		h->tags.head = tag->next;
 		free(tag);
 	}
-	
-	if (h->symtab)
-		chars_free(h->symtab);
 
 	free(h);
 }
 
-
 void
 print_gen_head(struct html *h)
 {
 	struct htmlpair	 tag[4];
+	struct tag	*t;
 
-	tag[0].key = ATTR_HTTPEQUIV;
-	tag[0].val = "Content-Type";
-	tag[1].key = ATTR_CONTENT;
-	tag[1].val = "text/html; charset=utf-8";
-	print_otag(h, TAG_META, 2, tag);
+	tag[0].key = ATTR_CHARSET;
+	tag[0].val = "utf-8";
+	print_otag(h, TAG_META, 1, tag);
 
-	tag[0].key = ATTR_NAME;
-	tag[0].val = "resource-type";
-	tag[1].key = ATTR_CONTENT;
-	tag[1].val = "document";
-	print_otag(h, TAG_META, 2, tag);
+	/*
+	 * Print a default style-sheet.
+	 */
+	t = print_otag(h, TAG_STYLE, 0, NULL);
+	print_text(h, "table.head, table.foot { width: 100%; }\n"
+	      "td.head-rtitle, td.foot-os { text-align: right; }\n"
+	      "td.head-vol { text-align: center; }\n"
+	      "table.foot td { width: 50%; }\n"
+	      "table.head td { width: 33%; }\n"
+	      "div.spacer { margin: 1em 0; }\n");
+	print_tagq(h, t);
 
 	if (h->style) {
 		tag[0].key = ATTR_REL;
@@ -214,145 +218,236 @@ print_gen_head(struct html *h)
 	}
 }
 
-
-static void
-print_spec(struct html *h, const char *p, size_t len)
-{
-	const char	*rhs;
-	size_t		 sz;
-
-	rhs = chars_a2ascii(h->symtab, p, len, &sz);
-
-	if (NULL == rhs) 
-		return;
-	fwrite(rhs, 1, sz, stdout);
-}
-
-
 static void
-print_res(struct html *h, const char *p, size_t len)
+print_metaf(struct html *h, enum mandoc_esc deco)
 {
-	const char	*rhs;
-	size_t		 sz;
-
-	rhs = chars_a2res(h->symtab, p, len, &sz);
-
-	if (NULL == rhs)
-		return;
-	fwrite(rhs, 1, sz, stdout);
-}
+	enum htmlfont	 font;
 
+	switch (deco) {
+	case ESCAPE_FONTPREV:
+		font = h->metal;
+		break;
+	case ESCAPE_FONTITALIC:
+		font = HTMLFONT_ITALIC;
+		break;
+	case ESCAPE_FONTBOLD:
+		font = HTMLFONT_BOLD;
+		break;
+	case ESCAPE_FONTBI:
+		font = HTMLFONT_BI;
+		break;
+	case ESCAPE_FONT:
+		/* FALLTHROUGH */
+	case ESCAPE_FONTROMAN:
+		font = HTMLFONT_NONE;
+		break;
+	default:
+		abort();
+		/* NOTREACHED */
+	}
 
-struct tag *
-print_ofont(struct html *h, enum htmlfont font)
-{
-	struct htmlpair	 tag;
+	if (h->metaf) {
+		print_tagq(h, h->metaf);
+		h->metaf = NULL;
+	}
 
 	h->metal = h->metac;
 	h->metac = font;
 
-	/* FIXME: DECO_ROMAN should just close out preexisting. */
+	switch (font) {
+	case HTMLFONT_ITALIC:
+		h->metaf = print_otag(h, TAG_I, 0, NULL);
+		break;
+	case HTMLFONT_BOLD:
+		h->metaf = print_otag(h, TAG_B, 0, NULL);
+		break;
+	case HTMLFONT_BI:
+		h->metaf = print_otag(h, TAG_B, 0, NULL);
+		print_otag(h, TAG_I, 0, NULL);
+		break;
+	default:
+		break;
+	}
+}
 
-	if (h->metaf && h->tags.head == h->metaf)
-		print_tagq(h, h->metaf);
+int
+html_strlen(const char *cp)
+{
+	size_t		 rsz;
+	int		 skip, sz;
+
+	/*
+	 * Account for escaped sequences within string length
+	 * calculations.  This follows the logic in term_strlen() as we
+	 * must calculate the width of produced strings.
+	 * Assume that characters are always width of "1".  This is
+	 * hacky, but it gets the job done for approximation of widths.
+	 */
 
-	PAIR_CLASS_INIT(&tag, htmlfonts[font]);
-	h->metaf = print_otag(h, TAG_SPAN, 1, &tag);
-	return(h->metaf);
+	sz = 0;
+	skip = 0;
+	while (1) {
+		rsz = strcspn(cp, "\\");
+		if (rsz) {
+			cp += rsz;
+			if (skip) {
+				skip = 0;
+				rsz--;
+			}
+			sz += rsz;
+		}
+		if ('\0' == *cp)
+			break;
+		cp++;
+		switch (mandoc_escape(&cp, NULL, NULL)) {
+		case ESCAPE_ERROR:
+			return(sz);
+		case ESCAPE_UNICODE:
+			/* FALLTHROUGH */
+		case ESCAPE_NUMBERED:
+			/* FALLTHROUGH */
+		case ESCAPE_SPECIAL:
+			if (skip)
+				skip = 0;
+			else
+				sz++;
+			break;
+		case ESCAPE_SKIPCHAR:
+			skip = 1;
+			break;
+		default:
+			break;
+		}
+	}
+	return(sz);
 }
 
-
-static void
-print_metaf(struct html *h, enum roffdeco deco)
+static int
+print_escape(char c)
 {
-	enum htmlfont	 font;
 
-	switch (deco) {
-	case (DECO_PREVIOUS):
-		font = h->metal;
+	switch (c) {
+	case '<':
+		printf("&lt;");
 		break;
-	case (DECO_ITALIC):
-		font = HTMLFONT_ITALIC;
+	case '>':
+		printf("&gt;");
 		break;
-	case (DECO_BOLD):
-		font = HTMLFONT_BOLD;
+	case '&':
+		printf("&amp;");
 		break;
-	case (DECO_ROMAN):
-		font = HTMLFONT_NONE;
+	case '"':
+		printf("&quot;");
+		break;
+	case ASCII_NBRSP:
+		putchar('-');
+		break;
+	case ASCII_HYPH:
+		putchar('-');
+		/* FALLTHROUGH */
+	case ASCII_BREAK:
 		break;
 	default:
-		abort();
-		/* NOTREACHED */
+		return(0);
 	}
-
-	(void)print_ofont(h, font);
+	return(1);
 }
 
-
 static int
 print_encode(struct html *h, const char *p, int norecurse)
 {
 	size_t		 sz;
-	int		 len, nospace;
+	int		 c, len, nospace;
 	const char	*seq;
-	enum roffdeco	 deco;
+	enum mandoc_esc	 esc;
+	static const char rejs[9] = { '\\', '<', '>', '&', '"',
+		ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
 
 	nospace = 0;
 
-	for (; *p; p++) {
-		sz = strcspn(p, "\\<>&");
+	while ('\0' != *p) {
+		if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
+			h->flags &= ~HTML_SKIPCHAR;
+			p++;
+			continue;
+		}
+
+		sz = strcspn(p, rejs);
 
 		fwrite(p, 1, sz, stdout);
-		p += /* LINTED */
-			sz;
+		p += (int)sz;
 
-		if ('<' == *p) {
-			printf("&lt;");
-			continue;
-		} else if ('>' == *p) {
-			printf("&gt;");
-			continue;
-		} else if ('&' == *p) {
-			printf("&amp;");
-			continue;
-		} else if ('\0' == *p)
+		if ('\0' == *p)
 			break;
 
-		seq = ++p;
-		len = a2roffdeco(&deco, &seq, &sz);
+		if (print_escape(*p++))
+			continue;
 
-		switch (deco) {
-		case (DECO_RESERVED):
-			print_res(h, seq, sz);
+		esc = mandoc_escape(&p, &seq, &len);
+		if (ESCAPE_ERROR == esc)
 			break;
-		case (DECO_SPECIAL):
-			print_spec(h, seq, sz);
-			break;
-		case (DECO_PREVIOUS):
+
+		switch (esc) {
+		case ESCAPE_FONT:
 			/* FALLTHROUGH */
-		case (DECO_BOLD):
+		case ESCAPE_FONTPREV:
 			/* FALLTHROUGH */
-		case (DECO_ITALIC):
+		case ESCAPE_FONTBOLD:
 			/* FALLTHROUGH */
-		case (DECO_ROMAN):
-			if (norecurse)
-				break;
-			print_metaf(h, deco);
-			break;
+		case ESCAPE_FONTITALIC:
+			/* FALLTHROUGH */
+		case ESCAPE_FONTBI:
+			/* FALLTHROUGH */
+		case ESCAPE_FONTROMAN:
+			if (0 == norecurse)
+				print_metaf(h, esc);
+			continue;
+		case ESCAPE_SKIPCHAR:
+			h->flags |= HTML_SKIPCHAR;
+			continue;
 		default:
 			break;
 		}
 
-		p += len - 1;
+		if (h->flags & HTML_SKIPCHAR) {
+			h->flags &= ~HTML_SKIPCHAR;
+			continue;
+		}
 
-		if (DECO_NOSPACE == deco && '\0' == *(p + 1))
-			nospace = 1;
+		switch (esc) {
+		case ESCAPE_UNICODE:
+			/* Skip past "u" header. */
+			c = mchars_num2uc(seq + 1, len - 1);
+			break;
+		case ESCAPE_NUMBERED:
+			c = mchars_num2char(seq, len);
+			if (c < 0)
+				continue;
+			break;
+		case ESCAPE_SPECIAL:
+			c = mchars_spec2cp(h->symtab, seq, len);
+			if (c <= 0)
+				continue;
+			break;
+		case ESCAPE_NOSPACE:
+			if ('\0' == *p)
+				nospace = 1;
+			continue;
+		default:
+			continue;
+		}
+		if ((c < 0x20 && c != 0x09) ||
+		    (c > 0x7E && c < 0xA0))
+			c = 0xFFFD;
+		if (c > 0x7E)
+			printf("&#%d;", c);
+		else if ( ! print_escape(c))
+			putchar(c);
 	}
 
 	return(nospace);
 }
 
-
 static void
 print_attr(struct html *h, const char *key, const char *val)
 {
@@ -361,9 +456,8 @@ print_attr(struct html *h, const char *key, const char *val)
 	putchar('\"');
 }
 
-
 struct tag *
-print_otag(struct html *h, enum htmltag tag, 
+print_otag(struct html *h, enum htmltag tag,
 		int sz, const struct htmlpair *p)
 {
 	int		 i;
@@ -372,11 +466,7 @@ print_otag(struct html *h, enum htmltag tag,
 	/* Push this tags onto the stack of open scopes. */
 
 	if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
-		t = malloc(sizeof(struct tag));
-		if (NULL == t) {
-			perror(NULL);
-			exit(EXIT_FAILURE);
-		}
+		t = mandoc_malloc(sizeof(struct tag));
 		t->tag = tag;
 		t->next = h->tags.head;
 		h->tags.head = t;
@@ -384,8 +474,20 @@ print_otag(struct html *h, enum htmltag tag,
 		t = NULL;
 
 	if ( ! (HTML_NOSPACE & h->flags))
-		if ( ! (HTML_CLRLINE & htmltags[tag].flags))
-			putchar(' ');
+		if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
+			/* Manage keeps! */
+			if ( ! (HTML_KEEP & h->flags)) {
+				if (HTML_PREKEEP & h->flags)
+					h->flags |= HTML_KEEP;
+				putchar(' ');
+			} else
+				printf("&#160;");
+		}
+
+	if ( ! (h->flags & HTML_NONOSPACE))
+		h->flags &= ~HTML_NOSPACE;
+	else
+		h->flags |= HTML_NOSPACE;
 
 	/* Print out the tag name and attributes. */
 
@@ -393,168 +495,109 @@ print_otag(struct html *h, enum htmltag tag,
 	for (i = 0; i < sz; i++)
 		print_attr(h, htmlattrs[p[i].key], p[i].val);
 
-	/* Add non-overridable attributes. */
-
-	if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
-		print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
-		print_attr(h, "xml:lang", "en");
-		print_attr(h, "lang", "en");
-	}
-
-	/* Accomodate for XML "well-formed" singleton escaping. */
+	/* Accommodate for "well-formed" singleton escaping. */
 
 	if (HTML_AUTOCLOSE & htmltags[tag].flags)
-		switch (h->type) {
-		case (HTML_XHTML_1_0_STRICT):
-			putchar('/');
-			break;
-		default:
-			break;
-		}
+		putchar('/');
 
 	putchar('>');
 
 	h->flags |= HTML_NOSPACE;
+
+	if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
+		putchar('\n');
+
 	return(t);
 }
 
-
 static void
-print_ctag(struct html *h, enum htmltag tag)
+print_ctag(struct html *h, struct tag *tag)
 {
-	
-	printf("</%s>", htmltags[tag].name);
-	if (HTML_CLRLINE & htmltags[tag].flags) {
+
+	/*
+	 * Remember to close out and nullify the current
+	 * meta-font and table, if applicable.
+	 */
+	if (tag == h->metaf)
+		h->metaf = NULL;
+	if (tag == h->tblt)
+		h->tblt = NULL;
+
+	printf("</%s>", htmltags[tag->tag].name);
+	if (HTML_CLRLINE & htmltags[tag->tag].flags) {
 		h->flags |= HTML_NOSPACE;
 		putchar('\n');
-	} 
-}
+	}
 
+	h->tags.head = tag->next;
+	free(tag);
+}
 
 void
 print_gen_decls(struct html *h)
 {
 
-	print_xmltype(h);
-	print_doctype(h);
+	puts("<!DOCTYPE html>");
 }
 
-
-static void
-print_xmltype(struct html *h)
+void
+print_text(struct html *h, const char *word)
 {
-	const char	*decl;
 
-	switch (h->type) {
-	case (HTML_XHTML_1_0_STRICT):
-		decl = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
-		break;
-	default:
-		decl = NULL;
-		break;
+	if ( ! (HTML_NOSPACE & h->flags)) {
+		/* Manage keeps! */
+		if ( ! (HTML_KEEP & h->flags)) {
+			if (HTML_PREKEEP & h->flags)
+				h->flags |= HTML_KEEP;
+			putchar(' ');
+		} else
+			printf("&#160;");
 	}
 
-	if (NULL == decl)
-		return;
-
-	printf("%s\n", decl);
-}
-
-
-static void
-print_doctype(struct html *h)
-{
-	const char	*doctype;
-	const char	*dtd;
-	const char	*name;
-
-	switch (h->type) {
-	case (HTML_HTML_4_01_STRICT):
-		name = "HTML";
-		doctype = "-//W3C//DTD HTML 4.01//EN";
-		dtd = "http://www.w3.org/TR/html4/strict.dtd";
+	assert(NULL == h->metaf);
+	switch (h->metac) {
+	case HTMLFONT_ITALIC:
+		h->metaf = print_otag(h, TAG_I, 0, NULL);
+		break;
+	case HTMLFONT_BOLD:
+		h->metaf = print_otag(h, TAG_B, 0, NULL);
+		break;
+	case HTMLFONT_BI:
+		h->metaf = print_otag(h, TAG_B, 0, NULL);
+		print_otag(h, TAG_I, 0, NULL);
 		break;
 	default:
-		name = "html";
-		doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
-		dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
 		break;
 	}
 
-	printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n", 
-			name, doctype, dtd);
-}
-
-
-void
-print_text(struct html *h, const char *p)
-{
-
-	if (*p && 0 == *(p + 1))
-		switch (*p) {
-		case('.'):
-			/* FALLTHROUGH */
-		case(','):
-			/* FALLTHROUGH */
-		case(';'):
-			/* FALLTHROUGH */
-		case(':'):
-			/* FALLTHROUGH */
-		case('?'):
-			/* FALLTHROUGH */
-		case('!'):
-			/* FALLTHROUGH */
-		case(')'):
-			/* FALLTHROUGH */
-		case(']'):
-			if ( ! (HTML_IGNDELIM & h->flags))
-				h->flags |= HTML_NOSPACE;
-			break;
-		default:
-			break;
-		}
-
-	if ( ! (h->flags & HTML_NOSPACE))
-		putchar(' ');
+	assert(word);
+	if ( ! print_encode(h, word, 0)) {
+		if ( ! (h->flags & HTML_NONOSPACE))
+			h->flags &= ~HTML_NOSPACE;
+		h->flags &= ~HTML_NONEWLINE;
+	} else
+		h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
 
-	assert(p);
-	if ( ! print_encode(h, p, 0))
-		h->flags &= ~HTML_NOSPACE;
+	if (h->metaf) {
+		print_tagq(h, h->metaf);
+		h->metaf = NULL;
+	}
 
-	/* 
-	 * Note that we don't process the pipe: the parser sees it as
-	 * punctuation, but we don't in terms of typography.
-	 */
-	if (*p && 0 == *(p + 1))
-		switch (*p) {
-		case('('):
-			/* FALLTHROUGH */
-		case('['):
-			h->flags |= HTML_NOSPACE;
-			break;
-		default:
-			break;
-		}
+	h->flags &= ~HTML_IGNDELIM;
 }
 
-
 void
 print_tagq(struct html *h, const struct tag *until)
 {
 	struct tag	*tag;
 
 	while ((tag = h->tags.head) != NULL) {
-		if (tag == h->metaf)
-			h->metaf = NULL;
-		print_ctag(h, tag->tag);
-		h->tags.head = tag->next;
-		free(tag);
+		print_ctag(h, tag);
 		if (until && tag == until)
 			return;
 	}
 }
 
-
 void
 print_stagq(struct html *h, const struct tag *suntil)
 {
@@ -563,14 +606,21 @@ print_stagq(struct html *h, const struct tag *suntil)
 	while ((tag = h->tags.head) != NULL) {
 		if (suntil && tag == suntil)
 			return;
-		if (tag == h->metaf)
-			h->metaf = NULL;
-		print_ctag(h, tag->tag);
-		h->tags.head = tag->next;
-		free(tag);
+		print_ctag(h, tag);
 	}
 }
 
+void
+print_paragraph(struct html *h)
+{
+	struct tag	*t;
+	struct htmlpair	 tag;
+
+	PAIR_CLASS_INIT(&tag, "spacer");
+	t = print_otag(h, TAG_DIV, 1, &tag);
+	print_tagq(h, t);
+}
+
 
 void
 bufinit(struct html *h)
@@ -580,62 +630,63 @@ bufinit(struct html *h)
 	h->buflen = 0;
 }
 
-
 void
 bufcat_style(struct html *h, const char *key, const char *val)
 {
 
 	bufcat(h, key);
-	bufncat(h, ":", 1);
+	bufcat(h, ":");
 	bufcat(h, val);
-	bufncat(h, ";", 1);
+	bufcat(h, ";");
 }
 
-
 void
 bufcat(struct html *h, const char *p)
 {
 
-	bufncat(h, p, strlen(p));
-}
+	/*
+	 * XXX This is broken and not easy to fix.
+	 * When using the -Oincludes option, buffmt_includes()
+	 * may pass in strings overrunning BUFSIZ, causing a crash.
+	 */
 
+	h->buflen = strlcat(h->buf, p, BUFSIZ);
+	assert(h->buflen < BUFSIZ);
+}
 
 void
-buffmt(struct html *h, const char *fmt, ...)
+bufcat_fmt(struct html *h, const char *fmt, ...)
 {
 	va_list		 ap;
 
 	va_start(ap, fmt);
-	(void)vsnprintf(h->buf + (int)h->buflen, 
-			BUFSIZ - h->buflen - 1, fmt, ap);
+	(void)vsnprintf(h->buf + (int)h->buflen,
+	    BUFSIZ - h->buflen - 1, fmt, ap);
 	va_end(ap);
 	h->buflen = strlen(h->buf);
 }
 
-
-void
+static void
 bufncat(struct html *h, const char *p, size_t sz)
 {
 
-	if (h->buflen + sz > BUFSIZ - 1)
-		sz = BUFSIZ - 1 - h->buflen;
-
-	(void)strncat(h->buf, p, sz);
+	assert(h->buflen + sz + 1 < BUFSIZ);
+	strncat(h->buf, p, sz);
 	h->buflen += sz;
 }
 
-
 void
 buffmt_includes(struct html *h, const char *name)
 {
 	const char	*p, *pp;
 
 	pp = h->base_includes;
-	
+
+	bufinit(h);
 	while (NULL != (p = strchr(pp, '%'))) {
 		bufncat(h, pp, (size_t)(p - pp));
 		switch (*(p + 1)) {
-		case('I'):
+		case'I':
 			bufcat(h, name);
 			break;
 		default:
@@ -648,24 +699,22 @@ buffmt_includes(struct html *h, const char *name)
 		bufcat(h, pp);
 }
 
-
 void
-buffmt_man(struct html *h, 
-		const char *name, const char *sec)
+buffmt_man(struct html *h, const char *name, const char *sec)
 {
 	const char	*p, *pp;
 
 	pp = h->base_man;
-	
-	/* LINTED */
+
+	bufinit(h);
 	while (NULL != (p = strchr(pp, '%'))) {
 		bufncat(h, pp, (size_t)(p - pp));
 		switch (*(p + 1)) {
-		case('S'):
+		case 'S':
 			bufcat(h, sec ? sec : "1");
 			break;
-		case('N'):
-			buffmt(h, name);
+		case 'N':
+			bufcat_fmt(h, "%s", name);
 			break;
 		default:
 			bufncat(h, p, 2);
@@ -677,81 +726,26 @@ buffmt_man(struct html *h,
 		bufcat(h, pp);
 }
 
-
 void
 bufcat_su(struct html *h, const char *p, const struct roffsu *su)
 {
 	double		 v;
-	const char	*u;
 
 	v = su->scale;
+	if (SCALE_MM == su->unit && 0.0 == (v /= 100.0))
+		v = 1.0;
+	else if (SCALE_BU == su->unit)
+		v /= 24.0;
 
-	switch (su->unit) {
-	case (SCALE_CM):
-		u = "cm";
-		break;
-	case (SCALE_IN):
-		u = "in";
-		break;
-	case (SCALE_PC):
-		u = "pc";
-		break;
-	case (SCALE_PT):
-		u = "pt";
-		break;
-	case (SCALE_EM):
-		u = "em";
-		break;
-	case (SCALE_MM):
-		if (0 == (v /= 100))
-			v = 1;
-		u = "em";
-		break;
-	case (SCALE_EN):
-		u = "ex";
-		break;
-	case (SCALE_BU):
-		u = "ex";
-		break;
-	case (SCALE_VS):
-		u = "em";
-		break;
-	default:
-		u = "ex";
-		break;
-	}
-
-	if (su->pt)
-		buffmt(h, "%s: %f%s;", p, v, u);
-	else
-		/* LINTED */
-		buffmt(h, "%s: %d%s;", p, (int)v, u);
+	bufcat_fmt(h, "%s: %.2f%s;", p, v, roffscales[su->unit]);
 }
 
-
 void
-html_idcat(char *dst, const char *src, int sz)
+bufcat_id(struct html *h, const char *src)
 {
-	int		 ssz;
-
-	assert(sz);
 
 	/* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
 
-	for ( ; *dst != '\0' && sz; dst++, sz--)
-		/* Jump to end. */ ;
-
-	assert(sz > 2);
-
-	/* We can't start with a number (bah). */
-
-	*dst++ = 'x';
-	*dst = '\0';
-	sz--;
-
-	for ( ; *src != '\0' && sz > 1; src++) {
-		ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
-		sz -= ssz;
-		dst += ssz;
-	}
+	while ('\0' != *src)
+		bufcat_fmt(h, "%.2x", *src++);
 }