/*
* process embedded links and images
*/
static int
linkylinky(int image, MMIOT *f)
{
int start = mmiottell(f);
Cstring name;
Footnote key, *ref;
int status = 0;
CREATE(name);
memset(&key, 0, sizeof key);
if ( linkylabel(f, &name) ) {
if ( peek(f,1) == '(' ) {
pull(f);
if ( linkyurl(f, image, &key) )
status = linkyformat(f, name, image, &key);
}
else {
int goodlink, implicit_mark = mmiottell(f);
if ( isspace(peek(f,1)) )
pull(f);
if ( peek(f,1) == '[' ) {
pull(f); /* consume leading '[' */
goodlink = linkylabel(f, &key.tag);
}
else {
/* new markdown implicit name syntax doesn't
* require a second []
*/
mmiotseek(f, implicit_mark);
goodlink = !(f->flags & MKD_1_COMPAT);
}
if ( goodlink ) {
if ( !S(key.tag) ) {
DELETE(key.tag);
T(key.tag) = T(name);
S(key.tag) = S(name);
}
if ( ref = bsearch(&key, T(*f->footnotes), S(*f->footnotes),
sizeof key, (stfu)__mkd_footsort) )
status = linkyformat(f, name, image, ref);
else if ( f->flags & IS_LABEL )
status = linkyformat(f, name, image, &imaget);
}
}
}
DELETE(name);
___mkd_freefootnote(&key);
if ( status == 0 )
mmiotseek(f, start);
return status;
}
/* look up (or construct) a footnote from the [xxx] link
* at the head of the stream.
*/
static int
linkykey(int image, Footnote *val, MMIOT *f)
{
Footnote *ret;
Cstring mylabel;
memset(val, 0, sizeof *val);
if ( (T(val->tag) = linkylabel(f, &S(val->tag))) == 0 )
return 0;
eatspace(f);
switch ( pull(f) ) {
case '(':
/* embedded link */
if ( (T(val->link) = linkyurl(f,&S(val->link))) == 0 )
return 0;
if ( image && !linkysize(f, &val->height, &val->width) )
return 0;
T(val->title) = linkytitle(f, &S(val->title));
return peek(f,0) == ')';
case '[':
/* footnote link */
mylabel = val->tag;
if ( (T(val->tag) = linkylabel(f, &S(val->tag))) == 0 )
return 0;
if ( !S(val->tag) )
val->tag = mylabel;
ret = bsearch(val, T(*f->footnotes), S(*f->footnotes),
sizeof *val, (stfu)__mkd_footsort);
if ( ret ) {
val->tag = mylabel;
val->link = ret->link;
val->title = ret->title;
val->height = ret->height;
val->width = ret->width;
return 1;
}
}
return 0;
}