MARKDOWN(3)

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.