===================================================================
RCS file: /cvs/mandoc/html.c,v
retrieving revision 1.33
retrieving revision 1.74
diff -u -p -r1.33 -r1.74
--- mandoc/html.c	2009/09/17 13:17:30	1.33
+++ mandoc/html.c	2009/10/30 18:53:08	1.74
@@ -1,4 +1,4 @@
-/*	$Id: html.c,v 1.33 2009/09/17 13:17:30 kristaps Exp $ */
+/*	$Id: html.c,v 1.74 2009/10/30 18:53:08 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -14,63 +14,29 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
-#include <sys/queue.h>
+#include <sys/types.h>
 
 #include <assert.h>
 #include <ctype.h>
-#include <err.h>
 #include <stdio.h>
+#include <stdarg.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
+#include "out.h"
 #include "chars.h"
-#include "mdoc.h"
-#include "man.h"
+#include "html.h"
+#include "main.h"
 
+#define	UNCONST(a)	((void *)(uintptr_t)(const void *)(a))
+
 #define	DOCTYPE		"-//W3C//DTD HTML 4.01//EN"
 #define	DTD		"http://www.w3.org/TR/html4/strict.dtd"
 
-#define	INDENT		 5
-#define	HALFINDENT	 3
-
-enum	htmltag {
-	TAG_HTML,
-	TAG_HEAD,
-	TAG_BODY,
-	TAG_META,
-	TAG_TITLE,
-	TAG_DIV,
-	TAG_H1,
-	TAG_H2,
-	TAG_P,
-	TAG_SPAN,
-	TAG_LINK,
-	TAG_BR,
-	TAG_A,
-	TAG_TABLE,
-	TAG_COL,
-	TAG_TR,
-	TAG_TD,
-	TAG_MAX
-};
-
-enum	htmlattr {
-	ATTR_HTTPEQUIV,
-	ATTR_CONTENT,
-	ATTR_NAME,
-	ATTR_REL,
-	ATTR_HREF,
-	ATTR_TYPE,
-	ATTR_MEDIA,
-	ATTR_CLASS,
-	ATTR_STYLE,
-	ATTR_WIDTH,
-	ATTR_VALIGN,
-	ATTR_MAX
-};
-
 struct	htmldata {
-	char		 *name;
+	const char	 *name;
 	int		  flags;
 #define	HTML_CLRLINE	 (1 << 0)
 #define	HTML_NOSTACK	 (1 << 1)
@@ -94,6 +60,10 @@ static	const struct htmldata htmltags[TAG_MAX] = {
 	{"col",		HTML_CLRLINE | HTML_NOSTACK}, /* 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 */
+	{"base",	HTML_CLRLINE | HTML_NOSTACK}, /* TAG_BASE */
 };
 
 static	const char	 *const htmlattrs[ATTR_MAX] = {
@@ -108,257 +78,52 @@ static	const char	 *const htmlattrs[ATTR_MAX] = {
 	"style",
 	"width",
 	"valign",
+	"target",
+	"id",
+	"summary",
 };
 
-struct	htmlpair {
-	enum htmlattr	  key;
-	char		 *val;
-};
-
-struct	tag {
-	enum htmltag	  tag;
-	SLIST_ENTRY(tag)  entry;
-};
-
-SLIST_HEAD(tagq, tag);
-
-struct	html {
-	int		  flags;
-#define	HTML_NOSPACE	 (1 << 0)
-#define	HTML_NEWLINE	 (1 << 1)
-	struct tagq	  stack;
-	void		 *symtab;
-};
-
-#define	MDOC_ARGS	  const struct mdoc_meta *m, \
-			  const struct mdoc_node *n, \
-			  struct html *h
-#define	MAN_ARGS	  const struct man_meta *m, \
-			  const struct man_node *n, \
-			  struct html *h
-struct	htmlmdoc {
-	int		(*pre)(MDOC_ARGS);
-	void		(*post)(MDOC_ARGS);
-};
-
-static	void		  print_gen_doctype(struct html *);
-static	void		  print_gen_head(struct html *);
-static	void		  print_mdoc(MDOC_ARGS);
-static	void		  print_mdoc_head(MDOC_ARGS);
-static	void		  print_mdoc_title(MDOC_ARGS);
-static	void		  print_mdoc_node(MDOC_ARGS);
-static	void		  print_man(MAN_ARGS);
-static	void		  print_man_head(MAN_ARGS);
-static	void		  print_man_body(MAN_ARGS);
-static	struct tag	 *print_otag(struct html *, enum htmltag, 
-				int, const struct htmlpair *);
-static	void		  print_tagq(struct html *, const struct tag *);
-static	void		  print_stagq(struct html *, const struct tag *);
-static	void		  print_ctag(struct html *, enum htmltag);
-static	void		  print_encode(struct html *, const char *);
-static	void		  print_escape(struct html *, const char **);
-static	void		  print_text(struct html *, const char *);
-static	void		  print_res(struct html *, const char *, int);
-static	void		  print_spec(struct html *, const char *, int);
-
-static	int		  a2width(const char *);
-static	int		  a2offs(const char *);
-
-static	int		  mdoc_list_pre(MDOC_ARGS);
-static	int		  mdoc_root_pre(MDOC_ARGS);
-static	int		  mdoc_hang_pre(MDOC_ARGS);
-
-static	int		  mdoc_ar_pre(MDOC_ARGS);
-static	int		  mdoc_bl_pre(MDOC_ARGS);
-static	int		  mdoc_fl_pre(MDOC_ARGS);
-static	int		  mdoc_it_pre(MDOC_ARGS);
-static	int		  mdoc_nd_pre(MDOC_ARGS);
-static	int		  mdoc_nm_pre(MDOC_ARGS);
-static	int		  mdoc_ns_pre(MDOC_ARGS);
-static	int		  mdoc_op_pre(MDOC_ARGS);
-static	void		  mdoc_op_post(MDOC_ARGS);
-static	int		  mdoc_pp_pre(MDOC_ARGS);
-static	int		  mdoc_sh_pre(MDOC_ARGS);
-static	int		  mdoc_ss_pre(MDOC_ARGS);
-static	int		  mdoc_xr_pre(MDOC_ARGS);
-static	int		  mdoc_xx_pre(MDOC_ARGS);
-
 #ifdef __linux__
-extern	size_t	  strlcpy(char *, const char *, size_t);
-extern	size_t	  strlcat(char *, const char *, size_t);
+extern	int		  getsubopt(char **, char * const *, char **);
 #endif
 
-static	const struct htmlmdoc mdocs[MDOC_MAX] = {
-	{NULL, NULL}, /* Ap */
-	{NULL, NULL}, /* Dd */
-	{NULL, NULL}, /* Dt */
-	{NULL, NULL}, /* Os */
-	{mdoc_sh_pre, NULL }, /* Sh */
-	{mdoc_ss_pre, NULL }, /* Ss */ 
-	{mdoc_pp_pre, NULL}, /* Pp */ 
-	{NULL, NULL}, /* D1 */
-	{NULL, NULL}, /* Dl */
-	{NULL, NULL}, /* Bd */
-	{NULL, NULL}, /* Ed */
-	{mdoc_bl_pre, NULL}, /* Bl */
-	{NULL, NULL}, /* El */
-	{mdoc_it_pre, NULL}, /* It */
-	{NULL, NULL}, /* Ad */ 
-	{NULL, NULL}, /* An */
-	{mdoc_ar_pre, NULL}, /* Ar */
-	{NULL, NULL}, /* Cd */
-	{NULL, NULL}, /* Cm */
-	{NULL, NULL}, /* Dv */ 
-	{NULL, NULL}, /* Er */ 
-	{NULL, NULL}, /* Ev */ 
-	{NULL, NULL}, /* Ex */
-	{NULL, NULL}, /* Fa */ 
-	{NULL, NULL}, /* Fd */ 
-	{mdoc_fl_pre, NULL}, /* Fl */
-	{NULL, NULL}, /* Fn */ 
-	{NULL, NULL}, /* Ft */ 
-	{NULL, NULL}, /* Ic */ 
-	{NULL, NULL}, /* In */ 
-	{NULL, NULL}, /* Li */
-	{mdoc_nd_pre, NULL}, /* Nd */ 
-	{mdoc_nm_pre, NULL}, /* Nm */ 
-	{mdoc_op_pre, mdoc_op_post}, /* Op */
-	{NULL, NULL}, /* Ot */
-	{NULL, NULL}, /* Pa */
-	{NULL, NULL}, /* Rv */
-	{NULL, NULL}, /* St */ 
-	{NULL, NULL}, /* Va */
-	{NULL, NULL}, /* Vt */ 
-	{mdoc_xr_pre, NULL}, /* Xr */
-	{NULL, NULL}, /* %A */
-	{NULL, NULL}, /* %B */
-	{NULL, NULL}, /* %D */
-	{NULL, NULL}, /* %I */
-	{NULL, NULL}, /* %J */
-	{NULL, NULL}, /* %N */
-	{NULL, NULL}, /* %O */
-	{NULL, NULL}, /* %P */
-	{NULL, NULL}, /* %R */
-	{NULL, NULL}, /* %T */
-	{NULL, NULL}, /* %V */
-	{NULL, NULL}, /* Ac */
-	{NULL, NULL}, /* Ao */
-	{NULL, NULL}, /* Aq */
-	{NULL, NULL}, /* At */
-	{NULL, NULL}, /* Bc */
-	{NULL, NULL}, /* Bf */ 
-	{NULL, NULL}, /* Bo */
-	{NULL, NULL}, /* Bq */
-	{mdoc_xx_pre, NULL}, /* Bsx */
-	{NULL, NULL}, /* Bx */
-	{NULL, NULL}, /* Db */
-	{NULL, NULL}, /* Dc */
-	{NULL, NULL}, /* Do */
-	{NULL, NULL}, /* Dq */
-	{NULL, NULL}, /* Ec */
-	{NULL, NULL}, /* Ef */
-	{NULL, NULL}, /* Em */ 
-	{NULL, NULL}, /* Eo */
-	{mdoc_xx_pre, NULL}, /* Fx */
-	{NULL, NULL}, /* Ms */
-	{NULL, NULL}, /* No */
-	{mdoc_ns_pre, NULL}, /* Ns */
-	{mdoc_xx_pre, NULL}, /* Nx */
-	{mdoc_xx_pre, NULL}, /* Ox */
-	{NULL, NULL}, /* Pc */
-	{NULL, NULL}, /* Pf */
-	{NULL, NULL}, /* Po */
-	{NULL, NULL}, /* Pq */
-	{NULL, NULL}, /* Qc */
-	{NULL, NULL}, /* Ql */
-	{NULL, NULL}, /* Qo */
-	{NULL, NULL}, /* Qq */
-	{NULL, NULL}, /* Re */
-	{NULL, NULL}, /* Rs */
-	{NULL, NULL}, /* Sc */
-	{NULL, NULL}, /* So */
-	{NULL, NULL}, /* Sq */
-	{NULL, NULL}, /* Sm */
-	{NULL, NULL}, /* Sx */
-	{NULL, NULL}, /* Sy */
-	{NULL, NULL}, /* Tn */
-	{mdoc_xx_pre, NULL}, /* Ux */
-	{NULL, NULL}, /* Xc */
-	{NULL, NULL}, /* Xo */
-	{NULL, NULL}, /* Fo */ 
-	{NULL, NULL}, /* Fc */ 
-	{NULL, NULL}, /* Oo */
-	{NULL, NULL}, /* Oc */
-	{NULL, NULL}, /* Bk */
-	{NULL, NULL}, /* Ek */
-	{NULL, NULL}, /* Bt */
-	{NULL, NULL}, /* Hf */
-	{NULL, NULL}, /* Fr */
-	{NULL, NULL}, /* Ud */
-	{NULL, NULL}, /* Lb */
-	{NULL, NULL}, /* Lp */ 
-	{NULL, NULL}, /* Lk */ 
-	{NULL, NULL}, /* Mt */ 
-	{NULL, NULL}, /* Brq */ 
-	{NULL, NULL}, /* Bro */ 
-	{NULL, NULL}, /* Brc */ 
-	{NULL, NULL}, /* %C */ 
-	{NULL, NULL}, /* Es */ 
-	{NULL, NULL}, /* En */ 
-	{mdoc_xx_pre, NULL}, /* Dx */ 
-	{NULL, NULL}, /* %Q */ 
-	{NULL, NULL}, /* br */
-	{NULL, NULL}, /* sp */ 
-};
-
-
-void
-html_mdoc(void *arg, const struct mdoc *m)
+void *
+html_alloc(char *outopts)
 {
-	struct html 	*h;
-	struct tag	*t;
-
-	h = (struct html *)arg;
-
-	print_gen_doctype(h);
-	t = print_otag(h, TAG_HTML, 0, NULL);
-	print_mdoc(mdoc_meta(m), mdoc_node(m), h);
-	print_tagq(h, t);
-
-	printf("\n");
-}
-
-
-void
-html_man(void *arg, const struct man *m)
-{
 	struct html	*h;
-	struct tag	*t;
+	const char	*toks[4];
+	char		*v;
 
-	h = (struct html *)arg;
+	toks[0] = "style";
+	toks[1] = "man";
+	toks[2] = "includes";
+	toks[3] = NULL;
 
-	print_gen_doctype(h);
-	t = print_otag(h, TAG_HTML, 0, NULL);
-	print_man(man_meta(m), man_node(m), h);
-	print_tagq(h, t);
+	h = calloc(1, sizeof(struct html));
+	if (NULL == h) {
+		fprintf(stderr, "memory exhausted\n");
+		exit(EXIT_FAILURE);
+	}
 
-	printf("\n");
-}
+	h->tags.head = NULL;
+	h->ords.head = NULL;
+	h->symtab = chars_init(CHARS_HTML);
 
+	while (outopts && *outopts)
+		switch (getsubopt(&outopts, UNCONST(toks), &v)) {
+		case (0):
+			h->style = v;
+			break;
+		case (1):
+			h->base_man = v;
+			break;
+		case (2):
+			h->base_includes = v;
+			break;
+		default:
+			break;
+		}
 
-void *
-html_alloc(void)
-{
-	struct html	*h;
-
-	if (NULL == (h = calloc(1, sizeof(struct html))))
-		return(NULL);
-
-	SLIST_INIT(&h->stack);
-	if (NULL == (h->symtab = chars_init(CHARS_HTML))) {
-		free(h);
-		return(NULL);
-	}
 	return(h);
 }
 
@@ -367,166 +132,60 @@ void
 html_free(void *p)
 {
 	struct tag	*tag;
+	struct ord	*ord;
 	struct html	*h;
 
 	h = (struct html *)p;
 
-	while ( ! SLIST_EMPTY(&h->stack)) {
-		tag = SLIST_FIRST(&h->stack);
-		SLIST_REMOVE_HEAD(&h->stack, entry);
+	while ((ord = h->ords.head) != NULL) { 
+		h->ords.head = ord->next;
+		free(ord);
+	}
+
+	while ((tag = h->tags.head) != NULL) {
+		h->tags.head = tag->next;	
 		free(tag);
 	}
+	
+	if (h->symtab)
+		chars_free(h->symtab);
+
 	free(h);
 }
 
 
-static void
-print_mdoc(MDOC_ARGS)
-{
-	struct tag	*t;
-
-	t = print_otag(h, TAG_HEAD, 0, NULL);
-	print_mdoc_head(m, n, h);
-	print_tagq(h, t);
-
-	t = print_otag(h, TAG_BODY, 0, NULL);
-	print_mdoc_title(m, n, h);
-	print_mdoc_node(m, n, h);
-	print_tagq(h, t);
-}
-
-
-static void
+void
 print_gen_head(struct html *h)
 {
-	struct htmlpair	 meta0[2];
-	struct htmlpair	 meta1[2];
-	struct htmlpair	 link[4];
+	struct htmlpair	 tag[4];
 
-	meta0[0].key = ATTR_HTTPEQUIV;
-	meta0[0].val = "Content-Type";
-	meta0[1].key = ATTR_CONTENT;
-	meta0[1].val = "text/html; charest-utf-8";
+	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);
 
-	meta1[0].key = ATTR_NAME;
-	meta1[0].val = "resource-type";
-	meta1[1].key = ATTR_CONTENT;
-	meta1[1].val = "document";
+	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);
 
-	link[0].key = ATTR_REL;
-	link[0].val = "stylesheet";
-	link[1].key = ATTR_HREF;
-	link[1].val = "style.css"; /* XXX */
-	link[2].key = ATTR_TYPE;
-	link[2].val = "text/css";
-	link[3].key = ATTR_MEDIA;
-	link[3].val = "all";
-
-	print_otag(h, TAG_META, 2, meta0);
-	print_otag(h, TAG_META, 2, meta1);
-	print_otag(h, TAG_LINK, 4, link);
-}
-
-
-/* ARGSUSED */
-static void
-print_mdoc_head(MDOC_ARGS)
-{
-
-	print_gen_head(h);
-	print_otag(h, TAG_TITLE, 0, NULL);
-	print_encode(h, m->title);
-}
-
-
-/* ARGSUSED */
-static void
-print_mdoc_title(MDOC_ARGS)
-{
-
-	/* TODO */
-}
-
-
-static void
-print_mdoc_node(MDOC_ARGS)
-{
-	int		 child;
-	struct tag	*t;
-
-	child = 1;
-	t = SLIST_FIRST(&h->stack);
-
-	switch (n->type) {
-	case (MDOC_ROOT):
-		child = mdoc_root_pre(m, n, h);
-		break;
-	case (MDOC_TEXT):
-		print_text(h, n->string);
-		break;
-	default:
-		if (mdocs[n->tok].pre)
-			child = (*mdocs[n->tok].pre)(m, n, h);
-		break;
+	if (h->style) {
+		tag[0].key = ATTR_REL;
+		tag[0].val = "stylesheet";
+		tag[1].key = ATTR_HREF;
+		tag[1].val = h->style;
+		tag[2].key = ATTR_TYPE;
+		tag[2].val = "text/css";
+		tag[3].key = ATTR_MEDIA;
+		tag[3].val = "all";
+		print_otag(h, TAG_LINK, 4, tag);
 	}
-
-	if (child && n->child)
-		print_mdoc_node(m, n->child, h);
-
-	print_stagq(h, t);
-
-	switch (n->type) {
-	case (MDOC_ROOT):
-		break;
-	case (MDOC_TEXT):
-		break;
-	default:
-		if (mdocs[n->tok].post)
-			(*mdocs[n->tok].post)(m, n, h);
-		break;
-	}
-
-	if (n->next)
-		print_mdoc_node(m, n->next, h);
 }
 
 
 static void
-print_man(MAN_ARGS)
-{
-	struct tag	*t;
-
-	t = print_otag(h, TAG_HEAD, 0, NULL);
-	print_man_head(m, n, h);
-	print_tagq(h, t);
-
-	t = print_otag(h, TAG_BODY, 0, NULL);
-	print_man_body(m, n, h);
-	print_tagq(h, t);
-}
-
-
-/* ARGSUSED */
-static void
-print_man_head(MAN_ARGS)
-{
-
-	print_gen_head(h);
-	print_otag(h, TAG_TITLE, 0, NULL);
-	print_encode(h, m->title);
-}
-
-
-/* ARGSUSED */
-static void
-print_man_body(MAN_ARGS)
-{
-
-	/* TODO */
-}
-
-
-static void
 print_spec(struct html *h, const char *p, int len)
 {
 	const char	*rhs;
@@ -663,16 +322,29 @@ print_encode(struct html *h, const char *p)
 {
 
 	for (; *p; p++) {
-		if ('\\' != *p) {
-			putchar(*p);
+		if ('\\' == *p) {
+			print_escape(h, &p);
 			continue;
 		}
-		print_escape(h, &p);
+		switch (*p) {
+		case ('<'):
+			printf("&lt;");
+			break;
+		case ('>'):
+			printf("&gt;");
+			break;
+		case ('&'):
+			printf("&amp;");
+			break;
+		default:
+			putchar(*p);
+			break;
+		}
 	}
 }
 
 
-static struct tag *
+struct tag *
 print_otag(struct html *h, enum htmltag tag, 
 		int sz, const struct htmlpair *p)
 {
@@ -680,10 +352,14 @@ print_otag(struct html *h, enum htmltag tag, 
 	struct tag	*t;
 
 	if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
-		if (NULL == (t = malloc(sizeof(struct tag))))
-			err(EXIT_FAILURE, "malloc");
+		t = malloc(sizeof(struct tag));
+		if (NULL == t) {
+			fprintf(stderr, "memory exhausted\n");
+			exit(EXIT_FAILURE);
+		}
 		t->tag = tag;
-		SLIST_INSERT_HEAD(&h->stack, t, entry);
+		t->next = h->tags.head;
+		h->tags.head = t;
 	} else
 		t = NULL;
 
@@ -716,25 +392,25 @@ print_ctag(struct html *h, enum htmltag tag)
 {
 	
 	printf("</%s>", htmltags[tag].name);
-	if (HTML_CLRLINE & htmltags[tag].flags)
+	if (HTML_CLRLINE & htmltags[tag].flags) {
 		h->flags |= HTML_NOSPACE;
-	if (HTML_CLRLINE & htmltags[tag].flags)
 		h->flags |= HTML_NEWLINE;
-	else
+		printf("\n");
+	} else
 		h->flags &= ~HTML_NEWLINE;
 }
 
 
 /* ARGSUSED */
-static void
+void
 print_gen_doctype(struct html *h)
 {
 	
-	printf("<!DOCTYPE HTML PUBLIC \"%s\" \"%s\">\n", DOCTYPE, DTD);
+	printf("<!DOCTYPE HTML PUBLIC \"%s\" \"%s\">", DOCTYPE, DTD);
 }
 
 
-static void
+void
 print_text(struct html *h, const char *p)
 {
 
@@ -757,7 +433,8 @@ print_text(struct html *h, const char *p)
 		case(']'):
 			/* FALLTHROUGH */
 		case('}'):
-			h->flags |= HTML_NOSPACE;
+			if ( ! (HTML_IGNDELIM & h->flags))
+				h->flags |= HTML_NOSPACE;
 			break;
 		default:
 			break;
@@ -787,15 +464,14 @@ print_text(struct html *h, const char *p)
 }
 
 
-static void
+void
 print_tagq(struct html *h, const struct tag *until)
 {
 	struct tag	*tag;
 
-	while ( ! SLIST_EMPTY(&h->stack)) {
-		tag = SLIST_FIRST(&h->stack);
+	while ((tag = h->tags.head) != NULL) {
 		print_ctag(h, tag->tag);
-		SLIST_REMOVE_HEAD(&h->stack, entry);
+		h->tags.head = tag->next;
 		free(tag);
 		if (until && tag == until)
 			return;
@@ -803,425 +479,201 @@ print_tagq(struct html *h, const struct tag *until)
 }
 
 
-static void
+void
 print_stagq(struct html *h, const struct tag *suntil)
 {
 	struct tag	*tag;
 
-	while ( ! SLIST_EMPTY(&h->stack)) {
-		tag = SLIST_FIRST(&h->stack);
+	while ((tag = h->tags.head) != NULL) {
 		if (suntil && tag == suntil)
 			return;
 		print_ctag(h, tag->tag);
-		SLIST_REMOVE_HEAD(&h->stack, entry);
+		h->tags.head = tag->next;
 		free(tag);
 	}
 }
 
 
-static int
-a2offs(const char *p)
+void
+bufinit(struct html *h)
 {
-	int		 len, i;
 
-	if (0 == strcmp(p, "left"))
-		return(0);
-	if (0 == strcmp(p, "indent"))
-		return(INDENT + 1);
-	if (0 == strcmp(p, "indent-two"))
-		return((INDENT + 1) * 2);
-
-	if (0 == (len = (int)strlen(p)))
-		return(0);
-
-	for (i = 0; i < len - 1; i++) 
-		if ( ! isdigit((u_char)p[i]))
-			break;
-
-	if (i == len - 1) 
-		if ('n' == p[len - 1] || 'm' == p[len - 1])
-			return(atoi(p));
-
-	return(len);
+	h->buf[0] = '\0';
+	h->buflen = 0;
 }
 
 
-static int
-a2width(const char *p)
+void
+bufcat_style(struct html *h, const char *key, const char *val)
 {
-	int		 i, len;
 
-	if (0 == (len = (int)strlen(p)))
-		return(0);
-	for (i = 0; i < len - 1; i++) 
-		if ( ! isdigit((u_char)p[i]))
-			break;
-
-	if (i == len - 1) 
-		if ('n' == p[len - 1] || 'm' == p[len - 1])
-			return(atoi(p) + 2);
-
-	return(len + 2);
+	bufcat(h, key);
+	bufncat(h, ":", 1);
+	bufcat(h, val);
+	bufncat(h, ";", 1);
 }
 
 
-
-
-/* ARGSUSED */
-static int
-mdoc_root_pre(MDOC_ARGS)
+void
+bufcat(struct html *h, const char *p)
 {
-	struct htmlpair	 tag;
 
-	tag.key = ATTR_CLASS;
-	tag.val = "body";
-
-	print_otag(h, TAG_DIV, 1, &tag);
-	return(1);
+	bufncat(h, p, strlen(p));
 }
 
 
-/* ARGSUSED */
-static int
-mdoc_ss_pre(MDOC_ARGS)
+void
+buffmt(struct html *h, const char *fmt, ...)
 {
+	va_list		 ap;
 
-	if (MDOC_BODY == n->type)
-		print_otag(h, TAG_DIV, 0, NULL);
-	if (MDOC_HEAD == n->type)
-		print_otag(h, TAG_H2, 0, NULL);
-	return(1);
+	va_start(ap, fmt);
+	(void)vsnprintf(h->buf + (int)h->buflen, 
+			BUFSIZ - h->buflen - 1, fmt, ap);
+	va_end(ap);
+	h->buflen = strlen(h->buf);
 }
 
 
-/* ARGSUSED */
-static int
-mdoc_fl_pre(MDOC_ARGS)
+void
+bufncat(struct html *h, const char *p, size_t sz)
 {
-	struct htmlpair	 tag;
 
-	tag.key = ATTR_CLASS;
-	tag.val = "flag";
+	if (h->buflen + sz > BUFSIZ - 1)
+		sz = BUFSIZ - 1 - h->buflen;
 
-	print_otag(h, TAG_SPAN, 1, &tag);
-	print_text(h, "\\-");
-	h->flags |= HTML_NOSPACE;
-	return(1);
+	(void)strncat(h->buf, p, sz);
+	h->buflen += sz;
 }
 
 
-/* ARGSUSED */
-static int
-mdoc_pp_pre(MDOC_ARGS)
+void
+buffmt_includes(struct html *h, const char *name)
 {
+	const char	*p, *pp;
 
-	print_otag(h, TAG_BR, 0, NULL);
-	print_otag(h, TAG_BR, 0, NULL);
-	return(0);
+	pp = h->base_includes;
+	
+	while (NULL != (p = strchr(pp, '%'))) {
+		bufncat(h, pp, (size_t)(p - pp));
+		switch (*(p + 1)) {
+		case('I'):
+			bufcat(h, name);
+			break;
+		default:
+			bufncat(h, p, 2);
+			break;
+		}
+		pp = p + 2;
+	}
+	if (pp)
+		bufcat(h, pp);
 }
 
 
-/* ARGSUSED */
-static int
-mdoc_nd_pre(MDOC_ARGS)
+void
+buffmt_man(struct html *h, 
+		const char *name, const char *sec)
 {
+	const char	*p, *pp;
 
-	if (MDOC_BODY == n->type)
-		print_text(h, "\\(en");
-	return(1);
-}
-
-
-/* ARGSUSED */
-static int
-mdoc_op_pre(MDOC_ARGS)
-{
-
-	if (MDOC_BODY == n->type) {
-		print_text(h, "\\(lB");
-		h->flags |= HTML_NOSPACE;
+	pp = h->base_man;
+	
+	/* LINTED */
+	while (NULL != (p = strchr(pp, '%'))) {
+		bufncat(h, pp, (size_t)(p - pp));
+		switch (*(p + 1)) {
+		case('S'):
+			bufcat(h, sec ? sec : "1");
+			break;
+		case('N'):
+			buffmt(h, name);
+			break;
+		default:
+			bufncat(h, p, 2);
+			break;
+		}
+		pp = p + 2;
 	}
-	return(1);
+	if (pp)
+		bufcat(h, pp);
 }
 
 
-/* ARGSUSED */
-static void
-mdoc_op_post(MDOC_ARGS)
+void
+bufcat_su(struct html *h, const char *p, const struct roffsu *su)
 {
+	double		 v;
+	const char	*u;
 
-	if (MDOC_BODY != n->type) 
-		return;
-	h->flags |= HTML_NOSPACE;
-	print_text(h, "\\(rB");
-}
+	v = su->scale;
 
-
-static int
-mdoc_nm_pre(MDOC_ARGS)
-{
-	struct htmlpair	class;
-
-	if ( ! (HTML_NEWLINE & h->flags))
-		if (SEC_SYNOPSIS == n->sec)
-			print_otag(h, TAG_BR, 0, NULL);
-
-	class.key = ATTR_CLASS;
-	class.val = "name";
-
-	print_otag(h, TAG_SPAN, 1, &class);
-	if (NULL == n->child)
-		print_text(h, m->name);
-
-	return(1);
-}
-
-
-/* ARGSUSED */
-static int
-mdoc_sh_pre(MDOC_ARGS)
-{
-
-	if (MDOC_BODY == n->type)
-		print_otag(h, TAG_DIV, 0, NULL);
-	if (MDOC_HEAD == n->type)
-		print_otag(h, TAG_H1, 0, NULL);
-	return(1);
-}
-
-
-/* ARGSUSED */
-static int
-mdoc_xr_pre(MDOC_ARGS)
-{
-	struct htmlpair	tag;
-
-	tag.key = ATTR_HREF;
-	tag.val = "#"; /* TODO */
-
-	print_otag(h, TAG_A, 1, &tag);
-
-	n = n->child;
-	print_text(h, n->string);
-	if (NULL == (n = n->next))
-		return(0);
-
-	h->flags |= HTML_NOSPACE;
-	print_text(h, "(");
-	h->flags |= HTML_NOSPACE;
-	print_text(h, n->string);
-	h->flags |= HTML_NOSPACE;
-	print_text(h, ")");
-
-	return(0);
-}
-
-
-/* ARGSUSED */
-static int
-mdoc_ns_pre(MDOC_ARGS)
-{
-
-	h->flags |= HTML_NOSPACE;
-	return(1);
-}
-
-/* ARGSUSED */
-static int
-mdoc_ar_pre(MDOC_ARGS)
-{
-	struct htmlpair tag;
-
-	tag.key = ATTR_CLASS;
-	tag.val = "arg";
-
-	print_otag(h, TAG_SPAN, 1, &tag);
-	return(1);
-}
-
-/* ARGSUSED */
-static int
-mdoc_xx_pre(MDOC_ARGS)
-{
-	const char	*pp;
-
-	switch (n->tok) {
-	case (MDOC_Bsx):
-		pp = "BSDI BSD/OS";
+	switch (su->unit) {
+	case (SCALE_CM):
+		u = "cm";
 		break;
-	case (MDOC_Dx):
-		pp = "DragonFlyBSD";
+	case (SCALE_IN):
+		u = "in";
 		break;
-	case (MDOC_Fx):
-		pp = "FreeBSD";
+	case (SCALE_PC):
+		u = "pc";
 		break;
-	case (MDOC_Nx):
-		pp = "NetBSD";
+	case (SCALE_PT):
+		u = "pt";
 		break;
-	case (MDOC_Ox):
-		pp = "OpenBSD";
+	case (SCALE_EM):
+		u = "em";
 		break;
-	case (MDOC_Ux):
-		pp = "UNIX";
+	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:
-		return(1);
+		u = "ex";
+		break;
 	}
 
-	print_text(h, pp);
-	return(1);
-}
-
-
-static int
-mdoc_hang_pre(MDOC_ARGS)
-{
-	int			 i, width, offs;
-	struct htmlpair		 tag;
-	char			 buf[BUFSIZ];
-	const struct mdoc_node	*bl;
-
-	if (MDOC_BODY == n->type) {
-		print_otag(h, TAG_DIV, 0, NULL);
-		return(1);
-	}
-
-	bl = n->parent->parent;
-	if (MDOC_BLOCK != n->type) 
-		bl = bl->parent;
-
-	assert(bl->args);
-
-	for (width = i = 0; i < (int)bl->args->argc; i++) 
-		if (MDOC_Width == bl->args->argv[i].arg) {
-			assert(bl->args->argv[i].sz);
-			width = a2width(bl->args->argv[i].value[0]);
-			break;
-		} else if (MDOC_Offset == bl->args->argv[i].arg) {
-			assert(bl->args->argv[i].sz);
-			offs = a2offs(bl->args->argv[i].value[0]);
-			break;
-		}
-
-	if (0 == width)
-		width = 10;
-
-	width *= 10;
-
-	if (MDOC_BLOCK == n->type)
-		snprintf(buf, BUFSIZ - 1, "margin-left: %dpx; "
-				"clear: both;", width);
+	if (su->pt)
+		buffmt(h, "%s: %f%s;", p, v, u);
 	else
-		snprintf(buf, BUFSIZ - 1, "float: left; "
-				"margin-left: -%dpx;", width);
-
-	tag.key = ATTR_STYLE;
-	tag.val = buf;
-
-	print_otag(h, TAG_DIV, 1, &tag);
-
-	return(1);
+		/* LINTED */
+		buffmt(h, "%s: %d%s;", p, (int)v, u);
 }
 
 
-static int
-mdoc_list_pre(MDOC_ARGS)
+void
+html_idcat(char *dst, const char *src, int sz)
 {
+	int		 ssz;
 
-	/* TODO */
-	return(0);
-}
+	assert(sz);
 
+	/* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
 
-static int
-mdoc_it_pre(MDOC_ARGS)
-{
-	int		 	 i, len;
-	const struct mdoc_node	*bl;
+	for ( ; *dst != '\0' && sz; dst++, sz--)
+		/* Jump to end. */ ;
 
-	if (MDOC_BLOCK == n->type)
-		bl = n->parent->parent;
-	else
-		bl = n->parent->parent->parent;
+	assert(sz > 2);
 
-	assert(bl->args);
-	len = (int)bl->args->argc;
+	/* We can't start with a number (bah). */
 
-	for (i = 0; i < len; i++) 
-		switch (bl->args->argv[i].arg) {
-		case (MDOC_Bullet):
-			/* FALLTHROUGH */
-		case (MDOC_Dash):
-			/* FALLTHROUGH */
-		case (MDOC_Enum):
-			/* FALLTHROUGH */
-		case (MDOC_Hyphen):
-			return(0); /* TODO */
-		case (MDOC_Tag):
-			return(0);
-		case (MDOC_Inset):
-			/* FALLTHROUGH */
-		case (MDOC_Diag):
-			/* FALLTHROUGH */
-		case (MDOC_Item):
-			/* FALLTHROUGH */
-		case (MDOC_Column):
-			/* FALLTHROUGH */
-		case (MDOC_Hang):
-			return(mdoc_hang_pre(m, n, h));
-			/* FALLTHROUGH */
-		case (MDOC_Ohang):
-			return(0); /* TODO */
-		default:
-			abort();
-			/* NOTREACHED */
-		}
+	*dst++ = 'x';
+	*dst = '\0';
+	sz--;
 
-	abort();
-	/* NOTREACHED */
-}
-
-
-static int
-mdoc_bl_pre(MDOC_ARGS)
-{
-	int		 i, len;
-
-	if (MDOC_BLOCK != n->type)
-		return(1);
-
-	assert(n->args);
-	len = (int)n->args->argc;
-
-	for (i = 0; i < len; i++) 
-		switch (n->args->argv[i].arg) {
-		case (MDOC_Bullet):
-			/* FALLTHROUGH */
-		case (MDOC_Dash):
-			/* FALLTHROUGH */
-		case (MDOC_Enum):
-			/* FALLTHROUGH */
-		case (MDOC_Hyphen):
-			return(mdoc_list_pre(m, n, h));
-		case (MDOC_Tag):
-			return(0);
-		case (MDOC_Inset):
-			/* FALLTHROUGH */
-		case (MDOC_Diag):
-			/* FALLTHROUGH */
-		case (MDOC_Item):
-			/* FALLTHROUGH */
-		case (MDOC_Column):
-			/* FALLTHROUGH */
-		case (MDOC_Hang):
-			return(1);
-		case (MDOC_Ohang):
-			return(0); /* TODO */
-		default:
-			abort();
-			/* NOTREACHED */
-		}
-
-	abort();
-	/* NOTREACHED */
+	for ( ; *src != '\0' && sz > 1; src++) {
+		ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
+		sz -= ssz;
+		dst += ssz;
+	}
 }