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Sup bro

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Add support for the Superscript extension.
This commit is contained in:
Vicent Marti 2011-07-25 02:15:43 +02:00
parent 72c9453882
commit 1d6f114b86
3 changed files with 57 additions and 1 deletions
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12
html/html.c
View file

@ -501,6 +501,16 @@ rndr_tablecell(struct buf *ob, struct buf *text, int align, void *opaque)
BUFPUTSL(ob, "</td>");
}
static int
rndr_superscript(struct buf *ob, struct buf *text, void *opaque)
{
if (!text || !text->size) return 0;
BUFPUTSL(ob, "<sup>");
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</sup>");
return 1;
}
static void
rndr_normal_text(struct buf *ob, struct buf *text, void *opaque)
{
@ -573,6 +583,7 @@ sdhtml_toc_renderer(struct mkd_renderer *renderer, void *extra)
NULL,
rndr_triple_emphasis,
rndr_strikethrough,
rndr_superscript,
NULL,
NULL,
@ -621,6 +632,7 @@ sdhtml_renderer(struct mkd_renderer *renderer, unsigned int render_flags, void *
rndr_raw_html,
rndr_triple_emphasis,
rndr_strikethrough,
rndr_superscript,
NULL,
rndr_normal_text,

44
src/markdown.c
View file

@ -60,6 +60,7 @@ static size_t char_autolink_url(struct buf *ob, struct render *rndr, char *data,
static size_t char_autolink_email(struct buf *ob, struct render *rndr, char *data, size_t offset, size_t size);
static size_t char_autolink_www(struct buf *ob, struct render *rndr, char *data, size_t offset, size_t size);
static size_t char_link(struct buf *ob, struct render *rndr, char *data, size_t offset, size_t size);
static size_t char_superscript(struct buf *ob, struct render *rndr, char *data, size_t offset, size_t size);
enum markdown_char_t {
MD_CHAR_NONE = 0,
@ -72,7 +73,8 @@ enum markdown_char_t {
MD_CHAR_ENTITITY,
MD_CHAR_AUTOLINK_URL,
MD_CHAR_AUTOLINK_EMAIL,
MD_CHAR_AUTOLINK_WWW
MD_CHAR_AUTOLINK_WWW,
MD_CHAR_SUPERSCRIPT,
};
static char_trigger markdown_char_ptrs[] = {
@ -87,6 +89,7 @@ static char_trigger markdown_char_ptrs[] = {
&char_autolink_url,
&char_autolink_email,
&char_autolink_www,
&char_superscript,
};
/* render • structure containing one particular render */
@ -1021,7 +1024,43 @@ cleanup:
return ret ? i : 0;
}
static size_t
char_superscript(struct buf *ob, struct render *rndr, char *data, size_t offset, size_t size)
{
size_t sup_start, sup_len;
struct buf *sup;
if (!rndr->make.superscript)
return 0;
if (size < 2)
return 0;
if (data[1] == '(') {
sup_start = sup_len = 2;
while (sup_len < size && data[sup_len] != ')' && data[sup_len - 1] != '\\')
sup_len++;
if (sup_len == size)
return 0;
} else {
sup_start = sup_len = 1;
while (sup_len < size && !isspace(data[sup_len]))
sup_len++;
}
if (sup_len - sup_start == 0)
return (sup_start == 2) ? 3 : 0;
sup = rndr_newbuf(rndr, BUFFER_SPAN);
parse_inline(sup, rndr, data + sup_start, sup_len - sup_start);
rndr->make.superscript(ob, sup, rndr->make.opaque);
rndr_popbuf(rndr, BUFFER_SPAN);
return (sup_start == 2) ? sup_len + 1 : sup_len;
}
/*********************************
* BLOCK-LEVEL PARSING FUNCTIONS *
@ -2179,6 +2218,9 @@ sd_markdown(struct buf *ob, struct buf *ib, const struct mkd_renderer *rndrer, u
rndr.active_char['w'] = MD_CHAR_AUTOLINK_WWW;
}
if (extensions & MKDEXT_SUPERSCRIPT)
rndr.active_char['^'] = MD_CHAR_SUPERSCRIPT;
/* Extension data */
rndr.ext_flags = extensions;
rndr.max_nesting = 16;

2
src/markdown.h
View file

@ -46,6 +46,7 @@ enum mkd_extensions {
MKDEXT_STRIKETHROUGH = (1 << 4),
MKDEXT_LAX_HTML_BLOCKS = (1 << 5),
MKDEXT_SPACE_HEADERS = (1 << 6),
MKDEXT_SUPERSCRIPT = (1 << 7),
};
/* mkd_renderer • functions for rendering parsed data */
@ -75,6 +76,7 @@ struct mkd_renderer {
int (*raw_html_tag)(struct buf *ob, struct buf *tag, void *opaque);
int (*triple_emphasis)(struct buf *ob, struct buf *text, void *opaque);
int (*strikethrough)(struct buf *ob, struct buf *text, void *opaque);
int (*superscript)(struct buf *ob, struct buf *text, void *opaque);
/* low level callbacks - NULL copies input directly into the output */
void (*entity)(struct buf *ob, struct buf *entity, void *opaque);