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static size_t char_link(
struct Blob *ob,
struct render *rndr,
char *data,
size_t offset,
size_t size /* parse_inline() ensures that size > 0 */
){
const int bFsfn = (size>3 && data[1]=='^'); /*free-standing footnote ref*/
const int is_img = (offset && data[-1] == '!');
size_t i = 1, txt_e;
struct Blob *content = 0;
struct Blob *link = 0;
struct Blob *title = 0;
const int bImg = !bFsfn && (offset && data[-1] == '!');
size_t i, txt_e;
struct Blob *content;
struct Blob *link;
struct Blob *title;
struct footnote fn;
int ret;
/* checking whether the correct renderer exists */
if( !bFsfn ){
if( (is_img && !rndr->make.image) || (!is_img && !rndr->make.link) ){
return 0;
if( (bImg && !rndr->make.image) || (!bImg && !rndr->make.link) ){
return 0;
}
}
/* looking for the matching closing bracket */
txt_e = matching_bracket_offset(data, data+size);
if( !txt_e ) return 0;
i = txt_e + 1;
ret = 0; /* error if we don't get to the callback */
fn.nUsed = 0;
/* free-standing footnote refernece */
if(!is_img && size>3 && data[1]=='^'){
/* free-standing footnote reference */
if( bFsfn ){
fn = get_footnote(rndr, data+2, txt_e-2);
content = link = title = 0;
}else{
fn.nUsed = 0;
/* skip "inter-bracket-whitespace" - any amount of whitespace or newline */
/* (this is much more lax than original markdown syntax) */
while( i<size && (data[i]==' ' || data[i]=='\t' || data[i]=='\n') ){ i++; }
/* allocate temporary buffers to store content, link and title */
title = new_work_buffer(rndr);
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}
/* rewinding an "inter-bracket-whitespace" */
i = txt_e+1;
}
}
/* building content: img alt is escaped, link content is parsed */
if( txt_e>1 && content ){
if( is_img ) blob_append(content, data+1, txt_e-1);
if( bImg ) blob_append(content, data+1, txt_e-1);
else parse_inline(content, rndr, data+1, txt_e-1);
}
/* calling the relevant rendering function */
if( is_img ){
if( bImg ){
if( blob_size(ob)>0 && blob_buffer(ob)[blob_size(ob)-1]=='!' ){
ob->nUsed--;
}
ret = rndr->make.image(ob, link, title, content, rndr->make.opaque);
}else if( fn.nUsed ){
if( rndr->make.footnote_ref ){
ret = rndr->make.footnote_ref(ob, content, &fn.upc, fn.iMark,
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