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document: Simplify char_link(...)

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(This is to prepare for next commit)
This commit is contained in:
Xavier Mendez 2014-08-14 20:42:28 +02:00
parent fbe1448b1f
commit 7dce1ac18a
1 changed files with 33 additions and 52 deletions
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85
src/document.c
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@ -328,6 +328,22 @@ _isspace(int c)
return c == ' ' || c == '\n';
}
/*
* Replace all spacing characters in data with spaces.
* Currently the only spacing characters are '\n' and space.
*/
static inline void
replace_spacing(uint8_t *data, size_t size)
{
size_t i = 0;
while (1) {
while (i < size && data[i] != '\n') i++;
if (i >= size) break;
data[i] = ' ';
i++;
}
}
/****************************
* INLINE PARSING FUNCTIONS *
****************************/
@ -979,20 +995,19 @@ char_autolink_url(hoedown_buffer *ob, hoedown_document *doc, uint8_t *data, size
return link_len;
}
/* char_link • '[': parsing a link or an image */
/* char_link • '[': parsing a link, a footnote or an image */
static size_t
char_link(hoedown_buffer *ob, hoedown_document *doc, uint8_t *data, size_t offset, size_t size)
{
int is_img = (offset && data[-1] == '!' && !is_escaped(data - offset, offset - 1)), level;
int is_footnote = (doc->ext_flags & HOEDOWN_EXT_FOOTNOTES && data[1] == '^');
size_t i = 1, txt_e, link_b = 0, link_e = 0, title_b = 0, title_e = 0;
hoedown_buffer *content = 0;
hoedown_buffer *link = 0;
hoedown_buffer *title = 0;
hoedown_buffer *u_link = 0;
hoedown_buffer *content = NULL;
hoedown_buffer *link = NULL;
hoedown_buffer *title = NULL;
hoedown_buffer *u_link = NULL;
size_t org_work_size = doc->work_bufs[BUFFER_SPAN].size;
int text_has_nl = 0, ret = 0;
int in_title = 0, qtype = 0;
int ret = 0, in_title = 0, qtype = 0;
/* checking whether the correct renderer exists */
if ((is_footnote && !doc->md.footnote_ref) || (is_img && !doc->md.image)
@ -1001,10 +1016,7 @@ char_link(hoedown_buffer *ob, hoedown_document *doc, uint8_t *data, size_t offse
/* looking for the matching closing bracket */
for (level = 1; i < size; i++) {
if (data[i] == '\n')
text_has_nl = 1;
else if (is_escaped(data, i))
if (is_escaped(data, i))
continue;
else if (data[i] == '[')
@ -1025,7 +1037,7 @@ char_link(hoedown_buffer *ob, hoedown_document *doc, uint8_t *data, size_t offse
/* footnote link */
if (is_footnote) {
hoedown_buffer id = { 0, 0, 0, 0, NULL, NULL, NULL };
hoedown_buffer id = { NULL, 0, 0, 0, NULL, NULL, NULL };
struct footnote_ref *fr;
if (txt_e < 3)
@ -1139,7 +1151,7 @@ char_link(hoedown_buffer *ob, hoedown_document *doc, uint8_t *data, size_t offse
/* reference style link */
else if (i < size && data[i] == '[') {
hoedown_buffer id = { 0, 0, 0, 0, NULL, NULL, NULL };
hoedown_buffer *id = newbuf(doc, BUFFER_SPAN);
struct link_ref *lr;
/* looking for the id */
@ -1151,29 +1163,13 @@ char_link(hoedown_buffer *ob, hoedown_document *doc, uint8_t *data, size_t offse
/* finding the link_ref */
if (link_b == link_e) {
if (text_has_nl) {
hoedown_buffer *b = newbuf(doc, BUFFER_SPAN);
size_t j;
for (j = 1; j < txt_e; j++) {
if (data[j] != '\n')
hoedown_buffer_putc(b, data[j]);
else if (data[j - 1] != ' ')
hoedown_buffer_putc(b, ' ');
}
id.data = b->data;
id.size = b->size;
} else {
id.data = data + 1;
id.size = txt_e - 1;
}
hoedown_buffer_put(id, data + 1, txt_e - 1);
replace_spacing(id->data, id->size);
} else {
id.data = data + link_b;
id.size = link_e - link_b;
hoedown_buffer_put(id, data + link_b, link_e - link_b);
}
lr = find_link_ref(doc->refs, id.data, id.size);
lr = find_link_ref(doc->refs, id->data, id->size);
if (!lr)
goto cleanup;
@ -1185,30 +1181,15 @@ char_link(hoedown_buffer *ob, hoedown_document *doc, uint8_t *data, size_t offse
/* shortcut reference style link */
else {
hoedown_buffer id = { 0, 0, 0, 0, NULL, NULL, NULL };
hoedown_buffer *id = newbuf(doc, BUFFER_SPAN);
struct link_ref *lr;
/* crafting the id */
if (text_has_nl) {
hoedown_buffer *b = newbuf(doc, BUFFER_SPAN);
size_t j;
for (j = 1; j < txt_e; j++) {
if (data[j] != '\n')
hoedown_buffer_putc(b, data[j]);
else if (data[j - 1] != ' ')
hoedown_buffer_putc(b, ' ');
}
id.data = b->data;
id.size = b->size;
} else {
id.data = data + 1;
id.size = txt_e - 1;
}
hoedown_buffer_put(id, data + 1, txt_e - 1);
replace_spacing(id->data, id->size);
/* finding the link_ref */
lr = find_link_ref(doc->refs, id.data, id.size);
lr = find_link_ref(doc->refs, id->data, id->size);
if (!lr)
goto cleanup;