===================================================================
RCS file: /cvs/mandoc/man_html.c,v
retrieving revision 1.2
retrieving revision 1.146
diff -u -p -r1.2 -r1.146
--- mandoc/man_html.c	2009/10/03 15:08:09	1.2
+++ mandoc/man_html.c	2018/04/11 17:11:13	1.146
@@ -1,31 +1,672 @@
-/*	$Id: man_html.c,v 1.2 2009/10/03 15:08:09 kristaps Exp $ */
+/*	$Id: man_html.c,v 1.146 2018/04/11 17:11:13 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, 2015, 2017 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
  * copyright notice and this permission notice appear in all copies.
  *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * 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 "mandoc.h"
+#include "roff.h"
 #include "man.h"
+#include "out.h"
+#include "html.h"
+#include "main.h"
 
+/* FIXME: have PD set the default vspace width. */
 
-/* ARGSUSED */
+#define	INDENT		  5
+
+#define	MAN_ARGS	  const struct roff_meta *man, \
+			  const struct roff_node *n, \
+			  struct html *h
+
+struct	htmlman {
+	int		(*pre)(MAN_ARGS);
+	int		(*post)(MAN_ARGS);
+};
+
+static	void		  print_bvspace(struct html *,
+				const struct roff_node *);
+static	void		  print_man_head(MAN_ARGS);
+static	void		  print_man_nodelist(MAN_ARGS);
+static	void		  print_man_node(MAN_ARGS);
+static	int		  fillmode(struct html *, int);
+static	int		  a2width(const struct roff_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_ign_pre(MAN_ARGS);
+static	int		  man_in_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_TH] = {
+	{ 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 */
+	{ NULL, NULL }, /* nf */
+	{ NULL, 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_OP_pre, NULL }, /* OP */
+	{ NULL, NULL }, /* EX */
+	{ NULL, NULL }, /* EE */
+	{ man_UR_pre, NULL }, /* UR */
+	{ NULL, NULL }, /* UE */
+	{ man_UR_pre, NULL }, /* MT */
+	{ NULL, NULL }, /* ME */
+};
+static	const struct htmlman *const mans = __mans - MAN_TH;
+
+
+/*
+ * 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 roff_node *n)
+{
+
+	if (n->body && n->body->child)
+		if (n->body->child->type == ROFFT_TBL)
+			return;
+
+	if (n->parent->type == ROFFT_ROOT || n->parent->tok != MAN_RS)
+		if (NULL == n->prev)
+			return;
+
+	print_paragraph(h);
+}
+
 void
-html_man(void *arg, const struct man *m)
+html_man(void *arg, const struct roff_man *man)
 {
+	struct html	*h;
+	struct tag	*t;
+
+	h = (struct html *)arg;
+
+	if ((h->oflags & HTML_FRAGMENT) == 0) {
+		print_gen_decls(h);
+		print_otag(h, TAG_HTML, "");
+		t = print_otag(h, TAG_HEAD, "");
+		print_man_head(&man->meta, man->first, h);
+		print_tagq(h, t);
+		print_otag(h, TAG_BODY, "");
+	}
+
+	man_root_pre(&man->meta, man->first, h);
+	t = print_otag(h, TAG_DIV, "c", "manual-text");
+	print_man_nodelist(&man->meta, man->first->child, h);
+	print_tagq(h, t);
+	man_root_post(&man->meta, man->first, h);
+	print_tagq(h, NULL);
+}
+
+static void
+print_man_head(MAN_ARGS)
+{
+	char	*cp;
+
+	print_gen_head(h);
+	mandoc_asprintf(&cp, "%s(%s)", man->title, man->msec);
+	print_otag(h, TAG_TITLE, "");
+	print_text(h, cp);
+	free(cp);
+}
+
+static void
+print_man_nodelist(MAN_ARGS)
+{
+
+	while (n != NULL) {
+		print_man_node(man, n, h);
+		n = n->next;
+	}
+}
+
+static void
+print_man_node(MAN_ARGS)
+{
+	static int	 want_fillmode = MAN_fi;
+	static int	 save_fillmode;
+
+	struct tag	*t;
+	int		 child;
+
+	/*
+	 * 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_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 (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, "");
+		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:
+		/*
+		 * 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->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, 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, h);
+
+	/* This will automatically close out any font scope. */
+	print_stagq(h, t);
+
+	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
+fillmode(struct html *h, int want)
+{
+	struct tag	*pre;
+	int		 had;
+
+	for (pre = h->tag; pre != NULL; pre = pre->next)
+		if (pre->tag == TAG_PRE)
+			break;
+
+	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 int
+a2width(const struct roff_node *n, struct roffsu *su)
+{
+	if (n->type != ROFFT_TEXT)
+		return 0;
+	return a2roffsu(n->string, su, SCALE_EN) != NULL;
+}
+
+static void
+man_root_pre(MAN_ARGS)
+{
+	struct tag	*t, *tt;
+	char		*title;
+
+	assert(man->title);
+	assert(man->msec);
+	mandoc_asprintf(&title, "%s(%s)", man->title, man->msec);
+
+	t = print_otag(h, TAG_TABLE, "c", "head");
+	tt = print_otag(h, TAG_TR, "");
+
+	print_otag(h, TAG_TD, "c", "head-ltitle");
+	print_text(h, title);
+	print_stagq(h, tt);
+
+	print_otag(h, TAG_TD, "c", "head-vol");
+	if (NULL != man->vol)
+		print_text(h, man->vol);
+	print_stagq(h, tt);
+
+	print_otag(h, TAG_TD, "c", "head-rtitle");
+	print_text(h, title);
+	print_tagq(h, t);
+	free(title);
+}
+
+static void
+man_root_post(MAN_ARGS)
+{
+	struct tag	*t, *tt;
+
+	t = print_otag(h, TAG_TABLE, "c", "foot");
+	tt = print_otag(h, TAG_TR, "");
+
+	print_otag(h, TAG_TD, "c", "foot-date");
+	print_text(h, man->date);
+	print_stagq(h, tt);
+
+	print_otag(h, TAG_TD, "c", "foot-os");
+	if (man->os)
+		print_text(h, man->os);
+	print_tagq(h, t);
+}
+
+static int
+man_SH_pre(MAN_ARGS)
+{
+	char	*id;
+
+	if (n->type == ROFFT_HEAD) {
+		id = html_make_id(n);
+		print_otag(h, TAG_H1, "cTi", "Sh", id);
+		if (id != NULL)
+			print_otag(h, TAG_A, "chR", "selflink", id);
+		free(id);
+	}
+	return 1;
+}
+
+static int
+man_alt_pre(MAN_ARGS)
+{
+	const struct roff_node	*nn;
+	int		 i;
+	enum htmltag	 fp;
+	struct tag	*t;
+
+	for (i = 0, nn = n->child; nn; nn = nn->next, i++) {
+		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();
+		}
+
+		if (i)
+			h->flags |= HTML_NOSPACE;
+
+		if (fp != TAG_MAX)
+			t = print_otag(h, fp, "");
+
+		print_text(h, nn->string);
+
+		if (fp != TAG_MAX)
+			print_tagq(h, t);
+	}
+	return 0;
+}
+
+static int
+man_SM_pre(MAN_ARGS)
+{
+	print_otag(h, TAG_SMALL, "");
+	if (MAN_SB == n->tok)
+		print_otag(h, TAG_B, "");
+	return 1;
+}
+
+static int
+man_SS_pre(MAN_ARGS)
+{
+	char	*id;
+
+	if (n->type == ROFFT_HEAD) {
+		id = html_make_id(n);
+		print_otag(h, TAG_H2, "cTi", "Ss", id);
+		if (id != NULL)
+			print_otag(h, TAG_A, "chR", "selflink", id);
+		free(id);
+	}
+	return 1;
+}
+
+static int
+man_PP_pre(MAN_ARGS)
+{
+
+	if (n->type == ROFFT_HEAD)
+		return 0;
+	else if (n->type == ROFFT_BLOCK)
+		print_bvspace(h, n);
+
+	return 1;
+}
+
+static int
+man_IP_pre(MAN_ARGS)
+{
+	const struct roff_node	*nn;
+
+	if (n->type == ROFFT_BODY) {
+		print_otag(h, TAG_DD, "c", "It-tag");
+		return 1;
+	} else if (n->type != ROFFT_HEAD) {
+		print_otag(h, TAG_DL, "c", "Bl-tag");
+		return 1;
+	}
+
+	/* FIXME: width specification. */
+
+	print_otag(h, TAG_DT, "c", "It-tag");
+
+	/* For IP, only print the first header element. */
+
+	if (MAN_IP == n->tok && n->child)
+		print_man_node(man, n->child, h);
+
+	/* For TP, only print next-line header elements. */
+
+	if (MAN_TP == n->tok) {
+		nn = n->child;
+		while (NULL != nn && 0 == (NODE_LINE & nn->flags))
+			nn = nn->next;
+		while (NULL != nn) {
+			print_man_node(man, nn, h);
+			nn = nn->next;
+		}
+	}
+
+	return 0;
+}
+
+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", "Pp", &sum, &sui);
+	return 1;
+}
+
+static int
+man_OP_pre(MAN_ARGS)
+{
+	struct tag	*tt;
+
+	print_text(h, "[");
+	h->flags |= HTML_NOSPACE;
+	tt = print_otag(h, TAG_SPAN, "c", "Op");
+
+	if (NULL != (n = n->child)) {
+		print_otag(h, TAG_B, "");
+		print_text(h, n->string);
+	}
+
+	print_stagq(h, tt);
+
+	if (NULL != n && NULL != n->next) {
+		print_otag(h, TAG_I, "");
+		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, "");
+	return 1;
+}
+
+static int
+man_I_pre(MAN_ARGS)
+{
+	print_otag(h, TAG_I, "");
+	return 1;
+}
+
+static int
+man_in_pre(MAN_ARGS)
+{
+	print_otag(h, TAG_BR, "");
+	return 0;
+}
+
+static int
+man_ign_pre(MAN_ARGS)
+{
+
+	return 0;
+}
+
+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);
+	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);
+		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, h);
+
+	return 0;
 }