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Add MultiMarkdown footnotes extension #141

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Add MultiMarkdown footnotes extension #141

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db63847
Add MultiMarkdown footnotes extension
bdolman Oct 30, 2012
511d6e9
Support CRLF (aka \r\n) in footnotes
bdolman Nov 9, 2012
9bf0176
Fix a potential memory leak
bdolman Nov 9, 2012
42aae21
Fix a tab spacing problem
bdolman Nov 9, 2012
aedf499
No more colons in footnote html ids. Apparently causes issues with jQ…
bdolman Nov 9, 2012
e9461f7
Prevent line break of footnote backlink
brief Nov 9, 2012
0bf8cfd
Add line break after footnote div
brief Nov 9, 2012
3b65796
Merge pull request #1 from brief/footnotes
bdolman Nov 9, 2012
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54 changes: 54 additions & 0 deletions html/html.c
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Original file line number Diff line number Diff line change
Expand Up @@ -486,6 +486,54 @@ rndr_normal_text(struct buf *ob, const struct buf *text, void *opaque)
escape_html(ob, text->data, text->size);
}

static void
rndr_footnotes(struct buf *ob, const struct buf *text, void *opaque)
{
BUFPUTSL(ob, "<div class=\"footnotes\">\n<hr />\n<ol>\n");

if (text)
bufput(ob, text->data, text->size);

BUFPUTSL(ob, "\n</ol>\n</div>\n");
}

static void
rndr_footnote_def(struct buf *ob, const struct buf *text, unsigned int num, void *opaque)
{
size_t i = 0;
int pfound = 0;

/* insert anchor at the end of first paragraph block */
if (text) {
while ((i+3) < text->size) {
if (text->data[i++] != '<') continue;
if (text->data[i++] != '/') continue;
if (text->data[i++] != 'p' && text->data[i] != 'P') continue;
if (text->data[i] != '>') continue;
i -= 3;
pfound = 1;
break;
}
}

bufprintf(ob, "\n<li id=\"fn%d\">\n", num);
if (pfound) {
bufput(ob, text->data, i);
bufprintf(ob, "&nbsp;<a href=\"#fnref%d\" rev=\"footnote\">&#8617;</a>", num);
bufput(ob, text->data + i, text->size - i);
} else if (text) {
bufput(ob, text->data, text->size);
}
BUFPUTSL(ob, "</li>\n");
}

static int
rndr_footnote_ref(struct buf *ob, unsigned int num, void *opaque)
{
bufprintf(ob, "<sup id=\"fnref%d\"><a href=\"#fn%d\" rel=\"footnote\">%d</a></sup>", num, num, num);
return 1;
}

static void
toc_header(struct buf *ob, const struct buf *text, int level, void *opaque)
{
Expand Down Expand Up @@ -554,6 +602,8 @@ sdhtml_toc_renderer(struct sd_callbacks *callbacks, struct html_renderopt *optio
NULL,
NULL,
NULL,
NULL,
NULL,

NULL,
rndr_codespan,
Expand All @@ -566,6 +616,7 @@ sdhtml_toc_renderer(struct sd_callbacks *callbacks, struct html_renderopt *optio
rndr_triple_emphasis,
rndr_strikethrough,
rndr_superscript,
NULL,

NULL,
NULL,
Expand Down Expand Up @@ -595,6 +646,8 @@ sdhtml_renderer(struct sd_callbacks *callbacks, struct html_renderopt *options,
rndr_table,
rndr_tablerow,
rndr_tablecell,
rndr_footnotes,
rndr_footnote_def,

rndr_autolink,
rndr_codespan,
Expand All @@ -607,6 +660,7 @@ sdhtml_renderer(struct sd_callbacks *callbacks, struct html_renderopt *options,
rndr_triple_emphasis,
rndr_strikethrough,
rndr_superscript,
rndr_footnote_ref,

NULL,
rndr_normal_text,
Expand Down
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