===================================================================
RCS file: /cvs/mandoc/man_html.c,v
retrieving revision 1.2
retrieving revision 1.109
diff -u -p -r1.2 -r1.109
--- mandoc/man_html.c	2009/10/03 15:08:09	1.2
+++ mandoc/man_html.c	2015/01/24 02:41:49	1.109
@@ -1,6 +1,7 @@
-/*	$Id: man_html.c,v 1.2 2009/10/03 15:08:09 kristaps Exp $ */
+/*	$Id: man_html.c,v 1.109 2015/01/24 02:41:49 schwarze Exp $ */
 /*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 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
@@ -14,18 +15,660 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
+#include "config.h"
+
 #include <sys/types.h>
-#include <sys/queue.h>
 
+#include <assert.h>
+#include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
-#include "html.h"
+#include "mandoc_aux.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. */
 
-/* ARGSUSED */
+#define	INDENT		  5
+
+#define	MAN_ARGS	  const struct man_meta *man, \
+			  const struct man_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);
+};
+
+static	void		  print_bvspace(struct html *,
+				const struct man_node *);
+static	void		  print_man(MAN_ARGS);
+static	void		  print_man_head(MAN_ARGS);
+static	void		  print_man_nodelist(MAN_ARGS);
+static	void		  print_man_node(MAN_ARGS);
+static	int		  a2width(const struct man_node *,
+				struct roffsu *);
+static	int		  man_B_pre(MAN_ARGS);
+static	int		  man_HP_pre(MAN_ARGS);
+static	int		  man_IP_pre(MAN_ARGS);
+static	int		  man_I_pre(MAN_ARGS);
+static	int		  man_OP_pre(MAN_ARGS);
+static	int		  man_PP_pre(MAN_ARGS);
+static	int		  man_RS_pre(MAN_ARGS);
+static	int		  man_SH_pre(MAN_ARGS);
+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	const struct htmlman mans[MAN_MAX] = {
+	{ man_br_pre, NULL }, /* br */
+	{ NULL, NULL }, /* TH */
+	{ man_SH_pre, NULL }, /* SH */
+	{ man_SS_pre, NULL }, /* SS */
+	{ man_IP_pre, NULL }, /* TP */
+	{ man_PP_pre, NULL }, /* LP */
+	{ man_PP_pre, NULL }, /* PP */
+	{ man_PP_pre, NULL }, /* P */
+	{ man_IP_pre, NULL }, /* IP */
+	{ man_HP_pre, NULL }, /* HP */
+	{ man_SM_pre, NULL }, /* SM */
+	{ man_SM_pre, NULL }, /* SB */
+	{ man_alt_pre, NULL }, /* BI */
+	{ man_alt_pre, NULL }, /* IB */
+	{ man_alt_pre, NULL }, /* BR */
+	{ man_alt_pre, NULL }, /* RB */
+	{ NULL, NULL }, /* R */
+	{ man_B_pre, NULL }, /* B */
+	{ 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 }, /* RE */
+	{ man_RS_pre, NULL }, /* RS */
+	{ man_ign_pre, NULL }, /* DT */
+	{ man_ign_pre, NULL }, /* UC */
+	{ 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 */
+	{ man_UR_pre, NULL }, /* UR */
+	{ NULL, NULL }, /* UE */
+	{ man_ign_pre, NULL }, /* ll */
+};
+
+
+/*
+ * Printing leading vertical space before a block.
+ * This is used for the paragraph macros.
+ * The rules are pretty simple, since there's very little nesting going
+ * on here.  Basically, if we're the first within another block (SS/SH),
+ * then don't emit vertical space.  If we are (RS), then do.  If not the
+ * first, print it.
+ */
+static void
+print_bvspace(struct html *h, const struct man_node *n)
+{
+
+	if (n->body && n->body->child)
+		if (MAN_TBL == n->body->child->type)
+			return;
+
+	if (MAN_ROOT == n->parent->type || MAN_RS != n->parent->tok)
+		if (NULL == n->prev)
+			return;
+
+	print_paragraph(h);
+}
+
 void
-html_man(void *arg, const struct man *m)
+html_man(void *arg, const struct man *man)
 {
+	struct mhtml	 mh;
+
+	memset(&mh, 0, sizeof(struct mhtml));
+	print_man(man_meta(man), man_node(man), &mh, (struct html *)arg);
+	putchar('\n');
+}
+
+static void
+print_man(MAN_ARGS)
+{
+	struct tag	*t, *tt;
+	struct htmlpair	 tag;
+
+	PAIR_CLASS_INIT(&tag, "mandoc");
+
+	if ( ! (HTML_FRAGMENT & h->oflags)) {
+		print_gen_decls(h);
+		t = print_otag(h, TAG_HTML, 0, NULL);
+		tt = print_otag(h, TAG_HEAD, 0, NULL);
+		print_man_head(man, n, mh, h);
+		print_tagq(h, tt);
+		print_otag(h, TAG_BODY, 0, NULL);
+		print_otag(h, TAG_DIV, 1, &tag);
+	} else
+		t = print_otag(h, TAG_DIV, 1, &tag);
+
+	print_man_nodelist(man, n, mh, h);
+	print_tagq(h, t);
+}
+
+static void
+print_man_head(MAN_ARGS)
+{
+
+	print_gen_head(h);
+	assert(man->title);
+	assert(man->msec);
+	bufcat_fmt(h, "%s(%s)", man->title, man->msec);
+	print_otag(h, TAG_TITLE, 0, NULL);
+	print_text(h, h->buf);
+}
+
+static void
+print_man_nodelist(MAN_ARGS)
+{
+
+	print_man_node(man, n, mh, h);
+	if (n->next)
+		print_man_nodelist(man, n->next, mh, h);
+}
+
+static void
+print_man_node(MAN_ARGS)
+{
+	int		 child;
+	struct tag	*t;
+
+	child = 1;
+	t = h->tags.head;
+
+	switch (n->type) {
+	case MAN_ROOT:
+		man_root_pre(man, n, mh, h);
+		break;
+	case MAN_TEXT:
+		if ('\0' == *n->string) {
+			print_paragraph(h);
+			return;
+		}
+		if (n->flags & MAN_LINE && (*n->string == ' ' || 
+		    (n->prev != NULL && mh->fl & MANH_LITERAL &&
+		     ! (h->flags & HTML_NONEWLINE))))
+			print_otag(h, TAG_BR, 0, NULL);
+		print_text(h, n->string);
+		return;
+	case MAN_EQN:
+		print_eqn(h, n->eqn);
+		break;
+	case MAN_TBL:
+		/*
+		 * This will take care of initialising all of the table
+		 * state data for the first table, then tearing it down
+		 * for the last one.
+		 */
+		print_tbl(h, n->span);
+		return;
+	default:
+		/*
+		 * Close out scope of font prior to opening a macro
+		 * scope.
+		 */
+		if (HTMLFONT_NONE != h->metac) {
+			h->metal = h->metac;
+			h->metac = HTMLFONT_NONE;
+		}
+
+		/*
+		 * Close out the current table, if it's open, and unset
+		 * the "meta" table state.  This will be reopened on the
+		 * next table element.
+		 */
+		if (h->tblt) {
+			print_tblclose(h);
+			t = h->tags.head;
+		}
+		if (mans[n->tok].pre)
+			child = (*mans[n->tok].pre)(man, n, mh, h);
+		break;
+	}
+
+	if (child && n->child)
+		print_man_nodelist(man, n->child, mh, h);
+
+	/* This will automatically close out any font scope. */
+	print_stagq(h, t);
+
+	switch (n->type) {
+	case MAN_ROOT:
+		man_root_post(man, n, mh, h);
+		break;
+	case MAN_EQN:
+		break;
+	default:
+		if (mans[n->tok].post)
+			(*mans[n->tok].post)(man, n, mh, h);
+		break;
+	}
+}
+
+static int
+a2width(const struct man_node *n, struct roffsu *su)
+{
+
+	if (MAN_TEXT != n->type)
+		return(0);
+	if (a2roffsu(n->string, su, SCALE_EN))
+		return(1);
+
+	return(0);
+}
+
+static void
+man_root_pre(MAN_ARGS)
+{
+	struct htmlpair	 tag;
+	struct tag	*t, *tt;
+	char		*title;
+
+	assert(man->title);
+	assert(man->msec);
+	mandoc_asprintf(&title, "%s(%s)", man->title, man->msec);
+
+	PAIR_CLASS_INIT(&tag, "head");
+	t = print_otag(h, TAG_TABLE, 1, &tag);
+
+	print_otag(h, TAG_TBODY, 0, NULL);
+
+	tt = print_otag(h, TAG_TR, 0, NULL);
+
+	PAIR_CLASS_INIT(&tag, "head-ltitle");
+	print_otag(h, TAG_TD, 1, &tag);
+	print_text(h, title);
+	print_stagq(h, tt);
+
+	PAIR_CLASS_INIT(&tag, "head-vol");
+	print_otag(h, TAG_TD, 1, &tag);
+	if (NULL != man->vol)
+		print_text(h, man->vol);
+	print_stagq(h, tt);
+
+	PAIR_CLASS_INIT(&tag, "head-rtitle");
+	print_otag(h, TAG_TD, 1, &tag);
+	print_text(h, title);
+	print_tagq(h, t);
+	free(title);
+}
+
+static void
+man_root_post(MAN_ARGS)
+{
+	struct htmlpair	 tag;
+	struct tag	*t, *tt;
+
+	PAIR_CLASS_INIT(&tag, "foot");
+	t = print_otag(h, TAG_TABLE, 1, &tag);
+
+	tt = print_otag(h, TAG_TR, 0, NULL);
+
+	PAIR_CLASS_INIT(&tag, "foot-date");
+	print_otag(h, TAG_TD, 1, &tag);
+
+	assert(man->date);
+	print_text(h, man->date);
+	print_stagq(h, tt);
+
+	PAIR_CLASS_INIT(&tag, "foot-os");
+	print_otag(h, TAG_TD, 1, &tag);
+
+	if (man->source)
+		print_text(h, man->source);
+	print_tagq(h, t);
+}
+
+
+static int
+man_br_pre(MAN_ARGS)
+{
+	struct roffsu	 su;
+	struct htmlpair	 tag;
+
+	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;
+
+	bufinit(h);
+	bufcat_su(h, "height", &su);
+	PAIR_STYLE_INIT(&tag, h);
+	print_otag(h, TAG_DIV, 1, &tag);
+
+	/* So the div isn't empty: */
+	print_text(h, "\\~");
+
+	return(0);
+}
+
+static int
+man_SH_pre(MAN_ARGS)
+{
+	struct htmlpair	 tag;
+
+	if (MAN_BLOCK == n->type) {
+		mh->fl &= ~MANH_LITERAL;
+		PAIR_CLASS_INIT(&tag, "section");
+		print_otag(h, TAG_DIV, 1, &tag);
+		return(1);
+	} else if (MAN_BODY == n->type)
+		return(1);
+
+	print_otag(h, TAG_H1, 0, NULL);
+	return(1);
+}
+
+static int
+man_alt_pre(MAN_ARGS)
+{
+	const struct man_node	*nn;
+	int		 i, savelit;
+	enum htmltag	 fp;
+	struct tag	*t;
+
+	if ((savelit = mh->fl & MANH_LITERAL))
+		print_otag(h, TAG_BR, 0, NULL);
+
+	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;
+			break;
+		case MAN_IB:
+			fp = i % 2 ? TAG_B : TAG_I;
+			break;
+		case MAN_RI:
+			fp = i % 2 ? TAG_I : TAG_MAX;
+			break;
+		case MAN_IR:
+			fp = i % 2 ? TAG_MAX : TAG_I;
+			break;
+		case MAN_BR:
+			fp = i % 2 ? TAG_MAX : TAG_B;
+			break;
+		case MAN_RB:
+			fp = i % 2 ? TAG_B : TAG_MAX;
+			break;
+		default:
+			abort();
+			/* NOTREACHED */
+		}
+
+		if (i)
+			h->flags |= HTML_NOSPACE;
+
+		if (TAG_MAX != fp)
+			t = print_otag(h, fp, 0, NULL);
+
+		print_man_node(man, nn, mh, h);
+
+		if (t)
+			print_tagq(h, t);
+	}
+
+	if (savelit)
+		mh->fl |= MANH_LITERAL;
+
+	return(0);
+}
+
+static int
+man_SM_pre(MAN_ARGS)
+{
+
+	print_otag(h, TAG_SMALL, 0, NULL);
+	if (MAN_SB == n->tok)
+		print_otag(h, TAG_B, 0, NULL);
+	return(1);
+}
+
+static int
+man_SS_pre(MAN_ARGS)
+{
+	struct htmlpair	 tag;
+
+	if (MAN_BLOCK == n->type) {
+		mh->fl &= ~MANH_LITERAL;
+		PAIR_CLASS_INIT(&tag, "subsection");
+		print_otag(h, TAG_DIV, 1, &tag);
+		return(1);
+	} else if (MAN_BODY == n->type)
+		return(1);
+
+	print_otag(h, TAG_H2, 0, NULL);
+	return(1);
+}
+
+static int
+man_PP_pre(MAN_ARGS)
+{
+
+	if (MAN_HEAD == n->type)
+		return(0);
+	else if (MAN_BLOCK == n->type)
+		print_bvspace(h, n);
+
+	return(1);
+}
+
+static int
+man_IP_pre(MAN_ARGS)
+{
+	const struct man_node	*nn;
+
+	if (MAN_BODY == n->type) {
+		print_otag(h, TAG_DD, 0, NULL);
+		return(1);
+	} else if (MAN_HEAD != n->type) {
+		print_otag(h, TAG_DL, 0, NULL);
+		return(1);
+	}
+
+	/* FIXME: width specification. */
+
+	print_otag(h, TAG_DT, 0, NULL);
+
+	/* For IP, only print the first header element. */
+
+	if (MAN_IP == n->tok && n->child)
+		print_man_node(man, n->child, mh, h);
+
+	/* For TP, only print next-line header elements. */
+
+	if (MAN_TP == n->tok) {
+		nn = n->child;
+		while (NULL != nn && 0 == (MAN_LINE & nn->flags))
+			nn = nn->next;
+		while (NULL != nn) {
+			print_man_node(man, nn, mh, h);
+			nn = nn->next;
+		}
+	}
+
+	return(0);
+}
+
+static int
+man_HP_pre(MAN_ARGS)
+{
+	struct htmlpair	 tag[2];
+	struct roffsu	 su;
+	const struct man_node *np;
+
+	if (MAN_HEAD == n->type)
+		return(0);
+	else if (MAN_BLOCK != n->type)
+		return(1);
+
+	np = n->head->child;
+
+	if (NULL == np || ! a2width(np, &su))
+		SCALE_HS_INIT(&su, INDENT);
+
+	bufinit(h);
+
+	print_bvspace(h, n);
+	bufcat_su(h, "margin-left", &su);
+	su.scale = -su.scale;
+	bufcat_su(h, "text-indent", &su);
+	PAIR_STYLE_INIT(&tag[0], h);
+	PAIR_CLASS_INIT(&tag[1], "spacer");
+	print_otag(h, TAG_DIV, 2, tag);
+	return(1);
+}
+
+static int
+man_OP_pre(MAN_ARGS)
+{
+	struct tag	*tt;
+	struct htmlpair	 tag;
+
+	print_text(h, "[");
+	h->flags |= HTML_NOSPACE;
+	PAIR_CLASS_INIT(&tag, "opt");
+	tt = print_otag(h, TAG_SPAN, 1, &tag);
+
+	if (NULL != (n = n->child)) {
+		print_otag(h, TAG_B, 0, NULL);
+		print_text(h, n->string);
+	}
+
+	print_stagq(h, tt);
+
+	if (NULL != n && NULL != n->next) {
+		print_otag(h, TAG_I, 0, NULL);
+		print_text(h, n->next->string);
+	}
+
+	print_stagq(h, tt);
+	h->flags |= HTML_NOSPACE;
+	print_text(h, "]");
+	return(0);
+}
+
+static int
+man_B_pre(MAN_ARGS)
+{
+
+	print_otag(h, TAG_B, 0, NULL);
+	return(1);
+}
+
+static int
+man_I_pre(MAN_ARGS)
+{
+
+	print_otag(h, TAG_I, 0, NULL);
+	return(1);
+}
+
+static int
+man_literal_pre(MAN_ARGS)
+{
+
+	if (MAN_fi == n->tok || MAN_EE == n->tok) {
+		print_otag(h, TAG_BR, 0, NULL);
+		mh->fl &= ~MANH_LITERAL;
+	} else
+		mh->fl |= MANH_LITERAL;
+
+	return(0);
+}
+
+static int
+man_in_pre(MAN_ARGS)
+{
+
+	print_otag(h, TAG_BR, 0, NULL);
+	return(0);
+}
+
+static int
+man_ign_pre(MAN_ARGS)
+{
+
+	return(0);
+}
+
+static int
+man_RS_pre(MAN_ARGS)
+{
+	struct htmlpair	 tag;
+	struct roffsu	 su;
+
+	if (MAN_HEAD == n->type)
+		return(0);
+	else if (MAN_BODY == n->type)
+		return(1);
+
+	SCALE_HS_INIT(&su, INDENT);
+	if (n->head->child)
+		a2width(n->head->child, &su);
+
+	bufinit(h);
+	bufcat_su(h, "margin-left", &su);
+	PAIR_STYLE_INIT(&tag, h);
+	print_otag(h, TAG_DIV, 1, &tag);
+	return(1);
+}
+
+static int
+man_UR_pre(MAN_ARGS)
+{
+	struct htmlpair		 tag[2];
+
+	n = n->child;
+	assert(MAN_HEAD == n->type);
+	if (n->nchild) {
+		assert(MAN_TEXT == n->child->type);
+		PAIR_CLASS_INIT(&tag[0], "link-ext");
+		PAIR_HREF_INIT(&tag[1], n->child->string);
+		print_otag(h, TAG_A, 2, tag);
+	}
+
+	assert(MAN_BODY == n->next->type);
+	if (n->next->nchild)
+		n = n->next;
+
+	print_man_nodelist(man, n->child, mh, h);
+
+	return(0);
 }