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-rw-r--r--usr.bin/mandoc/html.c74
-rw-r--r--usr.bin/mandoc/mdoc_html.c13
2 files changed, 49 insertions, 38 deletions
diff --git a/usr.bin/mandoc/html.c b/usr.bin/mandoc/html.c
index 90e182ece18..b95c609ae79 100644
--- a/usr.bin/mandoc/html.c
+++ b/usr.bin/mandoc/html.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: html.c,v 1.139 2020/04/18 20:28:46 schwarze Exp $ */
+/* $OpenBSD: html.c,v 1.140 2020/04/19 15:15:54 schwarze Exp $ */
/*
* Copyright (c) 2011-2015, 2017-2020 Ingo Schwarze <schwarze@openbsd.org>
* Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
@@ -110,6 +110,11 @@ static const struct htmldata htmltags[TAG_MAX] = {
};
/* Avoid duplicate HTML id= attributes. */
+
+struct id_entry {
+ int ord; /* Ordinal number of the latest occurrence. */
+ char id[]; /* The id= attribute without any ordinal suffix. */
+};
static struct ohash id_unique;
static void html_reset_internal(struct html *);
@@ -144,7 +149,7 @@ html_alloc(const struct manoutput *outopts)
if (outopts->toc)
h->oflags |= HTML_TOC;
- mandoc_ohash_init(&id_unique, 4, 0);
+ mandoc_ohash_init(&id_unique, 4, offsetof(struct id_entry, id));
return h;
}
@@ -153,17 +158,17 @@ static void
html_reset_internal(struct html *h)
{
struct tag *tag;
- char *cp;
+ struct id_entry *entry;
unsigned int slot;
while ((tag = h->tag) != NULL) {
h->tag = tag->next;
free(tag);
}
- cp = ohash_first(&id_unique, &slot);
- while (cp != NULL) {
- free(cp);
- cp = ohash_next(&id_unique, &slot);
+ entry = ohash_first(&id_unique, &slot);
+ while (entry != NULL) {
+ free(entry);
+ entry = ohash_next(&id_unique, &slot);
}
ohash_delete(&id_unique);
}
@@ -172,7 +177,7 @@ void
html_reset(void *p)
{
html_reset_internal(p);
- mandoc_ohash_init(&id_unique, 4, 0);
+ mandoc_ohash_init(&id_unique, 4, offsetof(struct id_entry, id));
}
void
@@ -327,20 +332,24 @@ html_fillmode(struct html *h, enum roff_tok want)
* element and/or as a segment identifier for a URI in an <a> element.
* The function may fail and return NULL if the node lacks text data
* to create the attribute from.
- * If the "unique" argument is 0, the caller is responsible for
- * free(3)ing the returned string after using it.
+ * The caller is responsible for free(3)ing the returned string.
+ *
* If the "unique" argument is non-zero, the "id_unique" ohash table
- * is used for de-duplication and owns the returned string, so the
- * caller must not free(3) it. In this case, it will be freed
- * automatically by html_reset() or html_free().
+ * is used for de-duplication. If the "unique" argument is 1,
+ * it is the first time the function is called for this tag and
+ * location, so if an ordinal suffix is needed, it is incremented.
+ * If the "unique" argument is 2, it is the second time the function
+ * is called for this tag and location, so the ordinal suffix
+ * remains unchanged.
*/
char *
html_make_id(const struct roff_node *n, int unique)
{
const struct roff_node *nch;
- char *buf, *bufs, *cp;
+ struct id_entry *entry;
+ char *buf, *cp;
+ size_t len;
unsigned int slot;
- int suffix;
if (n->tag != NULL)
buf = mandoc_strdup(n->tag);
@@ -384,25 +393,21 @@ html_make_id(const struct roff_node *n, int unique)
/* Avoid duplicate HTML id= attributes. */
- bufs = NULL;
- suffix = 1;
slot = ohash_qlookup(&id_unique, buf);
- cp = ohash_find(&id_unique, slot);
- if (cp != NULL) {
- while (cp != NULL) {
- free(bufs);
- if (++suffix > 127) {
- free(buf);
- return NULL;
- }
- mandoc_asprintf(&bufs, "%s_%d", buf, suffix);
- slot = ohash_qlookup(&id_unique, bufs);
- cp = ohash_find(&id_unique, slot);
- }
- free(buf);
- buf = bufs;
+ if ((entry = ohash_find(&id_unique, slot)) == NULL) {
+ len = strlen(buf) + 1;
+ entry = mandoc_malloc(sizeof(*entry) + len);
+ entry->ord = 1;
+ memcpy(entry->id, buf, len);
+ ohash_insert(&id_unique, slot, entry);
+ } else if (unique == 1)
+ entry->ord++;
+
+ if (entry->ord > 1) {
+ cp = buf;
+ mandoc_asprintf(&buf, "%s_%d", cp, entry->ord);
+ free(cp);
}
- ohash_insert(&id_unique, slot, buf);
return buf;
}
@@ -784,7 +789,7 @@ print_otag_id(struct html *h, enum htmltag elemtype, const char *cattr,
if (n->flags & NODE_ID)
id = html_make_id(n, 1);
if (n->flags & NODE_HREF)
- href = id == NULL ? html_make_id(n, 0) : id;
+ href = id == NULL ? html_make_id(n, 2) : id;
if (href != NULL && htmltags[elemtype].flags & HTML_INPHRASE)
ret = print_otag(h, TAG_A, "chR", "permalink", href);
t = print_otag(h, elemtype, "ci", cattr, id);
@@ -802,6 +807,7 @@ print_otag_id(struct html *h, enum htmltag elemtype, const char *cattr,
print_otag(h, TAG_A, "chR", "permalink", href);
}
}
+ free(id);
if (id == NULL)
free(href);
return ret;
@@ -913,7 +919,7 @@ print_tagged_text(struct html *h, const char *word, struct roff_node *n)
print_metaf(h);
print_indent(h);
- if (n != NULL && (href = html_make_id(n, 0)) != NULL) {
+ if (n != NULL && (href = html_make_id(n, 2)) != NULL) {
t = print_otag(h, TAG_A, "chR", "permalink", href);
free(href);
} else
diff --git a/usr.bin/mandoc/mdoc_html.c b/usr.bin/mandoc/mdoc_html.c
index 4a277cbc72a..fcff005883b 100644
--- a/usr.bin/mandoc/mdoc_html.c
+++ b/usr.bin/mandoc/mdoc_html.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: mdoc_html.c,v 1.214 2020/04/18 20:28:46 schwarze Exp $ */
+/* $OpenBSD: mdoc_html.c,v 1.215 2020/04/19 15:15:54 schwarze Exp $ */
/*
* Copyright (c) 2014-2020 Ingo Schwarze <schwarze@openbsd.org>
* Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
@@ -693,8 +693,10 @@ mdoc_tg_pre(MDOC_ARGS)
{
char *id;
- if ((id = html_make_id(n, 1)) != NULL)
+ if ((id = html_make_id(n, 1)) != NULL) {
print_tagq(h, print_otag(h, TAG_MARK, "i", id));
+ free(id);
+ }
return 0;
}
@@ -1209,6 +1211,8 @@ mdoc_skip_pre(MDOC_ARGS)
static int
mdoc_pp_pre(MDOC_ARGS)
{
+ char *id;
+
if (n->flags & NODE_NOFILL) {
print_endline(h);
if (n->flags & NODE_ID)
@@ -1219,8 +1223,9 @@ mdoc_pp_pre(MDOC_ARGS)
}
} else {
html_close_paragraph(h);
- print_otag(h, TAG_P, "ci", "Pp",
- n->flags & NODE_ID ? html_make_id(n, 1) : NULL);
+ id = n->flags & NODE_ID ? html_make_id(n, 1) : NULL;
+ print_otag(h, TAG_P, "ci", "Pp", id);
+ free(id);
}
return 0;
}