static delimiter *S_insert_emph(subject *subj, delimiter *opener,
delimiter *closer) {
delimiter *delim, *tmp_delim;
bufsize_t use_delims;
cmark_node *opener_inl = opener->inl_text;
cmark_node *closer_inl = closer->inl_text;
bufsize_t opener_num_chars = opener_inl->as.literal.len;
bufsize_t closer_num_chars = closer_inl->as.literal.len;
cmark_node *tmp, *tmpnext, *emph;
// calculate the actual number of characters used from this closer
use_delims = (closer_num_chars >= 2 && opener_num_chars >=2) ? 2 : 1;
// remove used characters from associated inlines.
opener_num_chars -= use_delims;
closer_num_chars -= use_delims;
opener_inl->as.literal.len = opener_num_chars;
closer_inl->as.literal.len = closer_num_chars;
// free delimiters between opener and closer
delim = closer->previous;
while (delim != NULL && delim != opener) {
tmp_delim = delim->previous;
remove_delimiter(subj, delim);
delim = tmp_delim;
}
// create new emph or strong, and splice it in to our inlines
// between the opener and closer
emph = use_delims == 1 ? make_emph(subj->mem) : make_strong(subj->mem);
tmp = opener_inl->next;
while (tmp && tmp != closer_inl) {
tmpnext = tmp->next;
cmark_node_append_child(emph, tmp);
tmp = tmpnext;
}
cmark_node_insert_after(opener_inl, emph);
// if opener has 0 characters, remove it and its associated inline
if (opener_num_chars == 0) {
cmark_node_free(opener_inl);
remove_delimiter(subj, opener);
}
// if closer has 0 characters, remove it and its associated inline
if (closer_num_chars == 0) {
// remove empty closer inline
cmark_node_free(closer_inl);
// remove closer from list
tmp_delim = closer->next;
remove_delimiter(subj, closer);
closer = tmp_delim;
}
return closer;
}
static delimiter*
S_insert_emph(subject *subj, delimiter *opener, delimiter *closer)
{
delimiter *delim, *tmp_delim;
int use_delims;
cmark_node *opener_inl = opener->inl_text;
cmark_node *closer_inl = closer->inl_text;
int opener_num_chars = opener_inl->as.literal.len;
int closer_num_chars = closer_inl->as.literal.len;
cmark_node *tmp, *emph, *first_child, *last_child;
// calculate the actual number of characters used from this closer
if (closer_num_chars < 3 || opener_num_chars < 3) {
use_delims = closer_num_chars <= opener_num_chars ?
closer_num_chars : opener_num_chars;
} else { // closer and opener both have >= 3 characters
use_delims = closer_num_chars % 2 == 0 ? 2 : 1;
}
// remove used characters from associated inlines.
opener_num_chars -= use_delims;
closer_num_chars -= use_delims;
opener_inl->as.literal.len = opener_num_chars;
closer_inl->as.literal.len = closer_num_chars;
// free delimiters between opener and closer
delim = closer->previous;
while (delim != NULL && delim != opener) {
tmp_delim = delim->previous;
remove_delimiter(subj, delim);
delim = tmp_delim;
}
first_child = opener_inl->next;
last_child = closer_inl->prev;
// if opener has 0 characters, remove it and its associated inline
if (opener_num_chars == 0) {
// replace empty opener inline with emph
cmark_chunk_free(&(opener_inl->as.literal));
emph = opener_inl;
emph->type = use_delims == 1 ? NODE_EMPH : NODE_STRONG;
// remove opener from list
remove_delimiter(subj, opener);
} else {
// create new emph or strong, and splice it in to our inlines
// between the opener and closer
emph = use_delims == 1 ? make_emph() : make_strong();
emph->parent = opener_inl->parent;
emph->prev = opener_inl;
opener_inl->next = emph;
}
// push children below emph
emph->next = closer_inl;
closer_inl->prev = emph;
emph->first_child = first_child;
emph->last_child = last_child;
// fix children pointers
first_child->prev = NULL;
last_child->next = NULL;
for (tmp = first_child; tmp != NULL; tmp = tmp->next) {
tmp->parent = emph;
}
// if closer has 0 characters, remove it and its associated inline
if (closer_num_chars == 0) {
// remove empty closer inline
cmark_node_free(closer_inl);
// remove closer from list
tmp_delim = closer->next;
remove_delimiter(subj, closer);
closer = tmp_delim;
}
return closer;
}