NAME
markdown — process Markdown documents
LIBRARY
Markdown (libmarkdown, -lmarkdown)
SYNOPSIS
#include <mkdio.h>
MMIOT
*mkd_in(FILE *input, int flags);
MMIOT
*mkd_string(char *string, int size, int flags);
int
markdown(MMIOT *doc, FILE *output, int flags);
DESCRIPTION
These functions convert Markdown documents and strings into HTML. markdown() processes an entire document, while mkd_text() processes a single string.
To process a file, you pass a FILE* to mkd_in(), and if it returns a nonzero value you pass that in to markdown(), which then writes the converted document to the specified FILE*. If your input has already been written into a string (generated input or a file opened with mmap(2)) you can feed that string to mkd_string() and pass its return value to markdown.()
Markdown() accepts the following flag values (or-ed together if needed) to restrict how it processes input:
MKD_NOLINKS
Don’t do link processing, block <a> tags.
MKD_NOIMAGE
Don’t do image processing, block <img>.
MKD_NOPANTS
Don’t run smartypants().
MKD_NOHTML
Don’t allow raw html through AT ALL
MKD_STRICT
Disable superscript and relaxed emphasis.
MKD_TAGTEXT
Process text to put inside an html tag (ID=, NAME=, <title>, &tc); no <em>, no <bold>, no html or [] expansion.
MKD_NO_EXT
Don’t allow pseudo-protocols.
MKD_CDATA
Generate code for xml ![CDATA[...]].
MKD_NOSUPERSCRIPT
Don’t generate superscripts. Emphasis happens _everywhere_
MKD_NOTABLES
Disallow tables.
MKD_NOSTRIKETHROUGH
Forbid ~~strikethrough~~.
MKD_TOC
Do table-of-contents processing.
MKD_1_COMPAT
Compatibility with MarkdownTest_1.0
MKD_AUTOLINK
Make http://foo.com into a link even without <> s.
MKD_SAFELINK
Paranoid check for link protocol.
MKD_NOHEADER
Don’t process header blocks.
MKD_TABSTOP
Expand tabs to 4 spaces.
MKD_NODIVQUOTE
Forbid >%class% blocks.
MKD_NOALPHALIST
Forbid alphabetic lists.
MKD_NODLIST
Forbid definition lists.
MKD_NODLDISCOUNT
Disable the discount definition list syntax style.
MKD_DLEXTRA
Enable the extra definition list syntax style.
MKD_EXTRA_FOOTNOTE
Enable markdown extra-style footnotes.
MKD_NOSTYLE
Do not extract (omit) <style/> blocks from the output.
MKD_FENCEDCODE
Allow fenced code blocks.
MKD_IDANCHOR
Use id= anchors instead of <a name=/> for table-of-contents links.
MKD_GITHUBTAGS
Allow underscore and dash in passed through element names.
MKD_URLENCODEDANCHOR
Use html5 encoding for multibyte and nonalphanumeric characters rather than hex expansion in toc links.
RETURN VALUES
markdown() returns 0 on success, 1 on failure. The mkd_in() and mkd_string() functions return a MMIOT* on success, null on failure.
SEE ALSO
markdown(1), mkd-callbacks(3), mkd-functions(3), mkd-line(3), markdown(7), mkd-extensions(7), mmap(2).
http://daringfireball.net/projects/markdown/syntax
BUGS
Error handling is minimal at best.
The MMIOT created by mkd_string() is deleted by the markdown function.
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