From 28bf3097cb23e1f811b5273cd04e16d309f04607 Mon Sep 17 00:00:00 2001
From: Ingo Schwarze <schwarze@openbsd.org>
Date: Wed, 15 Mar 2017 11:29:53 +0000
Subject: Minimal support for deep linking into man(7) pages. As the man(7)
 language does not provide semantic markup, only .SH, .SS, and .UR become
 anchors for now.

---
 html.c | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

(limited to 'html.c')

diff --git a/html.c b/html.c
index c477fd1b..ed076eaa 100644
--- a/html.c
+++ b/html.c
@@ -28,8 +28,9 @@
 #include <string.h>
 #include <unistd.h>
 
-#include "mandoc.h"
 #include "mandoc_aux.h"
+#include "mandoc.h"
+#include "roff.h"
 #include "out.h"
 #include "html.h"
 #include "manconf.h"
@@ -236,6 +237,28 @@ print_metaf(struct html *h, enum mandoc_esc deco)
 	}
 }
 
+char *
+html_make_id(const struct roff_node *n)
+{
+	const struct roff_node	*nch;
+	char			*buf, *cp;
+
+	for (nch = n->child; nch != NULL; nch = nch->next)
+		if (nch->type != ROFFT_TEXT)
+			return NULL;
+
+	buf = NULL;
+	deroff(&buf, n);
+
+	/* http://www.w3.org/TR/html5/dom.html#the-id-attribute */
+
+	for (cp = buf; *cp != '\0'; cp++)
+		if (*cp == ' ')
+			*cp = '_';
+
+	return buf;
+}
+
 int
 html_strlen(const char *cp)
 {
-- 
cgit