===================================================================
RCS file: /cvs/mandoc/man_html.c,v
retrieving revision 1.125
retrieving revision 1.152
diff -u -p -r1.125 -r1.152
--- mandoc/man_html.c	2017/01/19 01:00:14	1.125
+++ mandoc/man_html.c	2018/06/25 13:33:04	1.152
@@ -1,7 +1,7 @@
-/*	$Id: man_html.c,v 1.125 2017/01/19 01:00:14 schwarze Exp $ */
+/*	$Id: man_html.c,v 1.152 2018/06/25 13:33:04 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2013, 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2013,2014,2015,2017,2018 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
@@ -26,27 +26,21 @@
 #include <string.h>
 
 #include "mandoc_aux.h"
+#include "mandoc.h"
 #include "roff.h"
 #include "man.h"
 #include "out.h"
 #include "html.h"
 #include "main.h"
 
-/* TODO: preserve ident widths. */
 /* FIXME: have PD set the default vspace width. */
 
 #define	INDENT		  5
 
 #define	MAN_ARGS	  const struct roff_meta *man, \
 			  const struct roff_node *n, \
-			  struct mhtml *mh, \
 			  struct html *h
 
-struct	mhtml {
-	int		  fl;
-#define	MANH_LITERAL	 (1 << 0) /* literal context */
-};
-
 struct	htmlman {
 	int		(*pre)(MAN_ARGS);
 	int		(*post)(MAN_ARGS);
@@ -54,11 +48,11 @@ struct	htmlman {
 
 static	void		  print_bvspace(struct html *,
 				const struct roff_node *);
-static	void		  print_man_head(MAN_ARGS);
+static	void		  print_man_head(const struct roff_meta *,
+				struct html *);
 static	void		  print_man_nodelist(MAN_ARGS);
 static	void		  print_man_node(MAN_ARGS);
-static	int		  a2width(const struct roff_node *,
-				struct roffsu *);
+static	int		  fillmode(struct html *, int);
 static	int		  man_B_pre(MAN_ARGS);
 static	int		  man_HP_pre(MAN_ARGS);
 static	int		  man_IP_pre(MAN_ARGS);
@@ -71,15 +65,14 @@ static	int		  man_SM_pre(MAN_ARGS);
 static	int		  man_SS_pre(MAN_ARGS);
 static	int		  man_UR_pre(MAN_ARGS);
 static	int		  man_alt_pre(MAN_ARGS);
-static	int		  man_br_pre(MAN_ARGS);
 static	int		  man_ign_pre(MAN_ARGS);
 static	int		  man_in_pre(MAN_ARGS);
-static	int		  man_literal_pre(MAN_ARGS);
-static	void		  man_root_post(MAN_ARGS);
-static	void		  man_root_pre(MAN_ARGS);
+static	void		  man_root_post(const struct roff_meta *,
+				struct html *);
+static	void		  man_root_pre(const struct roff_meta *,
+				struct html *);
 
-static	const struct htmlman mans[MAN_MAX] = {
-	{ man_br_pre, NULL }, /* br */
+static	const struct htmlman __mans[MAN_MAX - MAN_TH] = {
 	{ NULL, NULL }, /* TH */
 	{ man_SH_pre, NULL }, /* SH */
 	{ man_SS_pre, NULL }, /* SS */
@@ -100,9 +93,8 @@ static	const struct htmlman mans[MAN_MAX] = {
 	{ man_I_pre, NULL }, /* I */
 	{ man_alt_pre, NULL }, /* IR */
 	{ man_alt_pre, NULL }, /* RI */
-	{ man_br_pre, NULL }, /* sp */
-	{ man_literal_pre, NULL }, /* nf */
-	{ man_literal_pre, NULL }, /* fi */
+	{ NULL, NULL }, /* nf */
+	{ NULL, NULL }, /* fi */
 	{ NULL, NULL }, /* RE */
 	{ man_RS_pre, NULL }, /* RS */
 	{ man_ign_pre, NULL }, /* DT */
@@ -110,14 +102,15 @@ static	const struct htmlman mans[MAN_MAX] = {
 	{ man_ign_pre, NULL }, /* PD */
 	{ man_ign_pre, NULL }, /* AT */
 	{ man_in_pre, NULL }, /* in */
-	{ man_ign_pre, NULL }, /* ft */
 	{ man_OP_pre, NULL }, /* OP */
-	{ man_literal_pre, NULL }, /* EX */
-	{ man_literal_pre, NULL }, /* EE */
+	{ NULL, NULL }, /* EX */
+	{ NULL, NULL }, /* EE */
 	{ man_UR_pre, NULL }, /* UR */
 	{ NULL, NULL }, /* UE */
-	{ man_ign_pre, NULL }, /* ll */
+	{ man_UR_pre, NULL }, /* MT */
+	{ NULL, NULL }, /* ME */
 };
+static	const struct htmlman *const mans = __mans - MAN_TH;
 
 
 /*
@@ -146,30 +139,34 @@ print_bvspace(struct html *h, const struct roff_node *
 void
 html_man(void *arg, const struct roff_man *man)
 {
-	struct mhtml	 mh;
-	struct html	*h;
-	struct tag	*t, *tt;
+	struct html		*h;
+	struct roff_node	*n;
+	struct tag		*t;
 
-	memset(&mh, 0, sizeof(mh));
 	h = (struct html *)arg;
+	n = man->first->child;
 
-	if ( ! (HTML_FRAGMENT & h->oflags)) {
+	if ((h->oflags & HTML_FRAGMENT) == 0) {
 		print_gen_decls(h);
-		t = print_otag(h, TAG_HTML, "");
-		tt = print_otag(h, TAG_HEAD, "");
-		print_man_head(&man->meta, man->first, &mh, h);
-		print_tagq(h, tt);
+		print_otag(h, TAG_HTML, "");
+		if (n->type == ROFFT_COMMENT)
+			print_gen_comment(h, n);
+		t = print_otag(h, TAG_HEAD, "");
+		print_man_head(&man->meta, h);
+		print_tagq(h, t);
 		print_otag(h, TAG_BODY, "");
-		print_otag(h, TAG_DIV, "c", "mandoc");
-	} else
-		t = print_otag(h, TAG_DIV, "c", "mandoc");
+	}
 
-	print_man_nodelist(&man->meta, man->first, &mh, h);
+	man_root_pre(&man->meta, h);
+	t = print_otag(h, TAG_DIV, "c", "manual-text");
+	print_man_nodelist(&man->meta, n, h);
 	print_tagq(h, t);
+	man_root_post(&man->meta, h);
+	print_tagq(h, NULL);
 }
 
 static void
-print_man_head(MAN_ARGS)
+print_man_head(const struct roff_meta *man, struct html *h)
 {
 	char	*cp;
 
@@ -185,7 +182,7 @@ print_man_nodelist(MAN_ARGS)
 {
 
 	while (n != NULL) {
-		print_man_node(man, n, mh, h);
+		print_man_node(man, n, h);
 		n = n->next;
 	}
 }
@@ -193,28 +190,99 @@ print_man_nodelist(MAN_ARGS)
 static void
 print_man_node(MAN_ARGS)
 {
-	int		 child;
+	static int	 want_fillmode = MAN_fi;
+	static int	 save_fillmode;
+
 	struct tag	*t;
+	int		 child;
 
-	child = 1;
-	t = h->tags.head;
+	/*
+	 * Handle fill mode switch requests up front,
+	 * they would just cause trouble in the subsequent code.
+	 */
 
+	switch (n->tok) {
+	case MAN_nf:
+	case MAN_EX:
+		want_fillmode = MAN_nf;
+		return;
+	case MAN_fi:
+	case MAN_EE:
+		want_fillmode = MAN_fi;
+		if (fillmode(h, 0) == MAN_fi)
+			print_otag(h, TAG_BR, "");
+		return;
+	default:
+		break;
+	}
+
+	/* Set up fill mode for the upcoming node. */
+
 	switch (n->type) {
-	case ROFFT_ROOT:
-		man_root_pre(man, n, mh, h);
+	case ROFFT_BLOCK:
+		save_fillmode = 0;
+		/* Some block macros suspend or cancel .nf. */
+		switch (n->tok) {
+		case MAN_TP:  /* Tagged paragraphs		*/
+		case MAN_IP:  /* temporarily disable .nf	*/
+		case MAN_HP:  /* for the head.			*/
+			save_fillmode = want_fillmode;
+			/* FALLTHROUGH */
+		case MAN_SH:  /* Section headers		*/
+		case MAN_SS:  /* permanently cancel .nf.	*/
+			want_fillmode = MAN_fi;
+			/* FALLTHROUGH */
+		case MAN_PP:  /* These have no head.		*/
+		case MAN_LP:  /* They will simply		*/
+		case MAN_P:   /* reopen .nf in the body.	*/
+		case MAN_RS:
+		case MAN_UR:
+		case MAN_MT:
+			fillmode(h, MAN_fi);
+			break;
+		default:
+			break;
+		}
 		break;
+	case ROFFT_TBL:
+		fillmode(h, MAN_fi);
+		break;
+	case ROFFT_ELEM:
+		/*
+		 * Some in-line macros produce tags and/or text
+		 * in the handler, so they require fill mode to be
+		 * configured up front just like for text nodes.
+		 * For the others, keep the traditional approach
+		 * of doing the same, for now.
+		 */
+		fillmode(h, want_fillmode);
+		break;
 	case ROFFT_TEXT:
-		if ('\0' == *n->string) {
-			print_paragraph(h);
-			return;
-		}
-		if (n->flags & NODE_LINE && (*n->string == ' ' ||
-		    (n->prev != NULL && mh->fl & MANH_LITERAL &&
-		     ! (h->flags & HTML_NONEWLINE))))
+		if (fillmode(h, want_fillmode) == MAN_fi &&
+		    want_fillmode == MAN_fi &&
+		    n->flags & NODE_LINE && *n->string == ' ' &&
+		    (h->flags & HTML_NONEWLINE) == 0)
 			print_otag(h, TAG_BR, "");
-		print_text(h, n->string);
+		if (*n->string != '\0')
+			break;
+		print_paragraph(h);
 		return;
+	case ROFFT_COMMENT:
+		return;
+	default:
+		break;
+	}
+
+	/* Produce output for this node. */
+
+	child = 1;
+	switch (n->type) {
+	case ROFFT_TEXT:
+		t = h->tag;
+		print_text(h, n->string);
+		break;
 	case ROFFT_EQN:
+		t = h->tag;
 		print_eqn(h, n->eqn);
 		break;
 	case ROFFT_TBL:
@@ -240,48 +308,66 @@ print_man_node(MAN_ARGS)
 		 * the "meta" table state.  This will be reopened on the
 		 * next table element.
 		 */
-		if (h->tblt) {
+		if (h->tblt)
 			print_tblclose(h);
-			t = h->tags.head;
+
+		t = h->tag;
+		if (n->tok < ROFF_MAX) {
+			roff_html_pre(h, n);
+			child = 0;
+			break;
 		}
+
+		assert(n->tok >= MAN_TH && n->tok < MAN_MAX);
 		if (mans[n->tok].pre)
-			child = (*mans[n->tok].pre)(man, n, mh, h);
+			child = (*mans[n->tok].pre)(man, n, h);
+
+		/* Some block macros resume .nf in the body. */
+		if (save_fillmode && n->type == ROFFT_BODY)
+			want_fillmode = save_fillmode;
+
 		break;
 	}
 
 	if (child && n->child)
-		print_man_nodelist(man, n->child, mh, h);
+		print_man_nodelist(man, n->child, h);
 
 	/* This will automatically close out any font scope. */
 	print_stagq(h, t);
 
-	switch (n->type) {
-	case ROFFT_ROOT:
-		man_root_post(man, n, mh, h);
-		break;
-	case ROFFT_EQN:
-		break;
-	default:
-		if (mans[n->tok].post)
-			(*mans[n->tok].post)(man, n, mh, h);
-		break;
-	}
+	if (fillmode(h, 0) == MAN_nf &&
+	    n->next != NULL && n->next->flags & NODE_LINE)
+		print_endline(h);
 }
 
+/*
+ * MAN_nf switches to no-fill mode, MAN_fi to fill mode.
+ * Other arguments do not switch.
+ * The old mode is returned.
+ */
 static int
-a2width(const struct roff_node *n, struct roffsu *su)
+fillmode(struct html *h, int want)
 {
+	struct tag	*pre;
+	int		 had;
 
-	if (n->type != ROFFT_TEXT)
-		return 0;
-	if (a2roffsu(n->string, su, SCALE_EN))
-		return 1;
+	for (pre = h->tag; pre != NULL; pre = pre->next)
+		if (pre->tag == TAG_PRE)
+			break;
 
-	return 0;
+	had = pre == NULL ? MAN_fi : MAN_nf;
+
+	if (want && want != had) {
+		if (want == MAN_nf)
+			print_otag(h, TAG_PRE, "");
+		else
+			print_tagq(h, pre);
+	}
+	return had;
 }
 
 static void
-man_root_pre(MAN_ARGS)
+man_root_pre(const struct roff_meta *man, struct html *h)
 {
 	struct tag	*t, *tt;
 	char		*title;
@@ -291,7 +377,6 @@ man_root_pre(MAN_ARGS)
 	mandoc_asprintf(&title, "%s(%s)", man->title, man->msec);
 
 	t = print_otag(h, TAG_TABLE, "c", "head");
-	print_otag(h, TAG_TBODY, "");
 	tt = print_otag(h, TAG_TR, "");
 
 	print_otag(h, TAG_TD, "c", "head-ltitle");
@@ -310,7 +395,7 @@ man_root_pre(MAN_ARGS)
 }
 
 static void
-man_root_post(MAN_ARGS)
+man_root_post(const struct roff_meta *man, struct html *h)
 {
 	struct tag	*t, *tt;
 
@@ -327,40 +412,17 @@ man_root_post(MAN_ARGS)
 	print_tagq(h, t);
 }
 
-
 static int
-man_br_pre(MAN_ARGS)
-{
-	struct roffsu	 su;
-
-	SCALE_VS_INIT(&su, 1);
-
-	if (MAN_sp == n->tok) {
-		if (NULL != (n = n->child))
-			if ( ! a2roffsu(n->string, &su, SCALE_VS))
-				su.scale = 1.0;
-	} else
-		su.scale = 0.0;
-
-	print_otag(h, TAG_DIV, "suh", &su);
-
-	/* So the div isn't empty: */
-	print_text(h, "\\~");
-
-	return 0;
-}
-
-static int
 man_SH_pre(MAN_ARGS)
 {
-	if (n->type == ROFFT_BLOCK) {
-		mh->fl &= ~MANH_LITERAL;
-		print_otag(h, TAG_DIV, "c", "section");
-		return 1;
-	} else if (n->type == ROFFT_BODY)
-		return 1;
+	char	*id;
 
-	print_otag(h, TAG_H1, "");
+	if (n->type == ROFFT_HEAD) {
+		id = html_make_id(n, 1);
+		print_otag(h, TAG_H1, "cTi", "Sh", id);
+		if (id != NULL)
+			print_otag(h, TAG_A, "chR", "permalink", id);
+	}
 	return 1;
 }
 
@@ -368,17 +430,11 @@ static int
 man_alt_pre(MAN_ARGS)
 {
 	const struct roff_node	*nn;
-	int		 i, savelit;
+	int		 i;
 	enum htmltag	 fp;
 	struct tag	*t;
 
-	if ((savelit = mh->fl & MANH_LITERAL))
-		print_otag(h, TAG_BR, "");
-
-	mh->fl &= ~MANH_LITERAL;
-
 	for (i = 0, nn = n->child; nn; nn = nn->next, i++) {
-		t = NULL;
 		switch (n->tok) {
 		case MAN_BI:
 			fp = i % 2 ? TAG_I : TAG_B;
@@ -405,18 +461,14 @@ man_alt_pre(MAN_ARGS)
 		if (i)
 			h->flags |= HTML_NOSPACE;
 
-		if (TAG_MAX != fp)
+		if (fp != TAG_MAX)
 			t = print_otag(h, fp, "");
 
-		print_man_node(man, nn, mh, h);
+		print_text(h, nn->string);
 
-		if (t)
+		if (fp != TAG_MAX)
 			print_tagq(h, t);
 	}
-
-	if (savelit)
-		mh->fl |= MANH_LITERAL;
-
 	return 0;
 }
 
@@ -432,14 +484,14 @@ man_SM_pre(MAN_ARGS)
 static int
 man_SS_pre(MAN_ARGS)
 {
-	if (n->type == ROFFT_BLOCK) {
-		mh->fl &= ~MANH_LITERAL;
-		print_otag(h, TAG_DIV, "c", "subsection");
-		return 1;
-	} else if (n->type == ROFFT_BODY)
-		return 1;
+	char	*id;
 
-	print_otag(h, TAG_H2, "");
+	if (n->type == ROFFT_HEAD) {
+		id = html_make_id(n, 1);
+		print_otag(h, TAG_H2, "cTi", "Ss", id);
+		if (id != NULL)
+			print_otag(h, TAG_A, "chR", "permalink", id);
+	}
 	return 1;
 }
 
@@ -464,7 +516,7 @@ man_IP_pre(MAN_ARGS)
 		print_otag(h, TAG_DD, "");
 		return 1;
 	} else if (n->type != ROFFT_HEAD) {
-		print_otag(h, TAG_DL, "");
+		print_otag(h, TAG_DL, "c", "Bl-tag");
 		return 1;
 	}
 
@@ -475,7 +527,7 @@ man_IP_pre(MAN_ARGS)
 	/* For IP, only print the first header element. */
 
 	if (MAN_IP == n->tok && n->child)
-		print_man_node(man, n->child, mh, h);
+		print_man_node(man, n->child, h);
 
 	/* For TP, only print next-line header elements. */
 
@@ -484,7 +536,7 @@ man_IP_pre(MAN_ARGS)
 		while (NULL != nn && 0 == (NODE_LINE & nn->flags))
 			nn = nn->next;
 		while (NULL != nn) {
-			print_man_node(man, nn, mh, h);
+			print_man_node(man, nn, h);
 			nn = nn->next;
 		}
 	}
@@ -495,24 +547,13 @@ man_IP_pre(MAN_ARGS)
 static int
 man_HP_pre(MAN_ARGS)
 {
-	struct roffsu	 sum, sui;
-	const struct roff_node *np;
-
 	if (n->type == ROFFT_HEAD)
 		return 0;
-	else if (n->type != ROFFT_BLOCK)
-		return 1;
 
-	np = n->head->child;
-
-	if (np == NULL || !a2width(np, &sum))
-		SCALE_HS_INIT(&sum, INDENT);
-
-	sui.unit = sum.unit;
-	sui.scale = -sum.scale;
-
-	print_bvspace(h, n);
-	print_otag(h, TAG_DIV, "csului", "spacer", &sum, &sui);
+	if (n->type == ROFFT_BLOCK) {
+		print_bvspace(h, n);
+		print_otag(h, TAG_DIV, "c", "HP");
+	}
 	return 1;
 }
 
@@ -523,7 +564,7 @@ man_OP_pre(MAN_ARGS)
 
 	print_text(h, "[");
 	h->flags |= HTML_NOSPACE;
-	tt = print_otag(h, TAG_SPAN, "c", "opt");
+	tt = print_otag(h, TAG_SPAN, "c", "Op");
 
 	if (NULL != (n = n->child)) {
 		print_otag(h, TAG_B, "");
@@ -558,19 +599,6 @@ man_I_pre(MAN_ARGS)
 }
 
 static int
-man_literal_pre(MAN_ARGS)
-{
-
-	if (MAN_fi == n->tok || MAN_EE == n->tok) {
-		print_otag(h, TAG_BR, "");
-		mh->fl &= ~MANH_LITERAL;
-	} else
-		mh->fl |= MANH_LITERAL;
-
-	return 0;
-}
-
-static int
 man_in_pre(MAN_ARGS)
 {
 	print_otag(h, TAG_BR, "");
@@ -587,36 +615,34 @@ man_ign_pre(MAN_ARGS)
 static int
 man_RS_pre(MAN_ARGS)
 {
-	struct roffsu	 su;
-
 	if (n->type == ROFFT_HEAD)
 		return 0;
-	else if (n->type == ROFFT_BODY)
-		return 1;
-
-	SCALE_HS_INIT(&su, INDENT);
-	if (n->head->child)
-		a2width(n->head->child, &su);
-
-	print_otag(h, TAG_DIV, "sul", &su);
+	if (n->type == ROFFT_BLOCK)
+		print_otag(h, TAG_DIV, "c", "Bd-indent");
 	return 1;
 }
 
 static int
 man_UR_pre(MAN_ARGS)
 {
+	char *cp;
 	n = n->child;
 	assert(n->type == ROFFT_HEAD);
 	if (n->child != NULL) {
 		assert(n->child->type == ROFFT_TEXT);
-		print_otag(h, TAG_A, "ch", "link-ext", n->child->string);
+		if (n->tok == MAN_MT) {
+			mandoc_asprintf(&cp, "mailto:%s", n->child->string);
+			print_otag(h, TAG_A, "cTh", "Mt", cp);
+			free(cp);
+		} else
+			print_otag(h, TAG_A, "cTh", "Lk", n->child->string);
 	}
 
 	assert(n->next->type == ROFFT_BODY);
 	if (n->next->child != NULL)
 		n = n->next;
 
-	print_man_nodelist(man, n->child, mh, h);
+	print_man_nodelist(man, n->child, h);
 
 	return 0;
 }