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/* markdown.h - generic markdown parser */
/*
* Copyright (c) 2009, Natacha Porté
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef LITHIUM_MARKDOWN_H
#define LITHIUM_MARKDOWN_H
#include "buffer.h"
/********************
* TYPE DEFINITIONS *
********************/
/* mkd_autolink • type of autolink */
enum mkd_autolink {
MKDA_NOT_AUTOLINK, /* used internally when it is not an autolink*/
MKDA_NORMAL, /* normal http/http/ftp/etc link */
MKDA_EXPLICIT_EMAIL, /* e-mail link with explit mailto: */
MKDA_IMPLICIT_EMAIL /* e-mail link without mailto: */
};
/* mkd_renderer • functions for rendering parsed data */
struct mkd_renderer {
/* document level callbacks */
void (*prolog)(struct buf *ob, void *opaque);
void (*epilog)(struct buf *ob, void *opaque);
/* block level callbacks - NULL skips the block */
void (*blockcode)(struct buf *ob, struct buf *text, void *opaque);
void (*blockquote)(struct buf *ob, struct buf *text, void *opaque);
void (*blockhtml)(struct buf *ob, struct buf *text, void *opaque);
void (*header)(struct buf *ob, struct buf *text,
int level, void *opaque);
void (*hrule)(struct buf *ob, void *opaque);
void (*list)(struct buf *ob, struct buf *text, int flags, void *opaque);
void (*listitem)(struct buf *ob, struct buf *text,
int flags, void *opaque);
void (*paragraph)(struct buf *ob, struct buf *text, void *opaque);
void (*table)(struct buf *ob, struct buf *head_row, struct buf *rows,
void *opaque);
void (*table_cell)(struct buf *ob, struct buf *text, int flags,
void *opaque);
void (*table_row)(struct buf *ob, struct buf *cells, int flags,
void *opaque);
/* span level callbacks - NULL or return 0 prints the span verbatim */
int (*autolink)(struct buf *ob, struct buf *link,
enum mkd_autolink type, void *opaque);
int (*codespan)(struct buf *ob, struct buf *text, void *opaque);
int (*double_emphasis)(struct buf *ob, struct buf *text,
char c, void *opaque);
int (*emphasis)(struct buf *ob, struct buf *text, char c,void*opaque);
int (*image)(struct buf *ob, struct buf *link, struct buf *title,
struct buf *alt, void *opaque);
int (*linebreak)(struct buf *ob, void *opaque);
int (*link)(struct buf *ob, struct buf *link, struct buf *title,
struct buf *content, void *opaque);
int (*raw_html_tag)(struct buf *ob, struct buf *tag, void *opaque);
int (*triple_emphasis)(struct buf *ob, struct buf *text,
char c, void *opaque);
/* low level callbacks - NULL copies input directly into the output */
void (*entity)(struct buf *ob, struct buf *entity, void *opaque);
void (*normal_text)(struct buf *ob, struct buf *text, void *opaque);
/* renderer data */
int max_work_stack; /* prevent arbitrary deep recursion, cf README */
const char *emph_chars; /* chars that trigger emphasis rendering */
void *opaque; /* opaque data send to every rendering callback */
};
/*********
* FLAGS *
*********/
/* list/listitem flags */
#define MKD_LIST_ORDERED 1
#define MKD_LI_BLOCK 2 /* <li> containing block data */
/* table cell flags */
#define MKD_CELL_ALIGN_DEFAULT 0
#define MKD_CELL_ALIGN_LEFT 1
#define MKD_CELL_ALIGN_RIGHT 2
#define MKD_CELL_ALIGN_CENTER 3 /* LEFT | RIGHT */
#define MKD_CELL_ALIGN_MASK 3
#define MKD_CELL_HEAD 4
/**********************
* EXPORTED FUNCTIONS *
**********************/
/* markdown • parses the input buffer and renders it into the output buffer */
void
markdown(struct buf *ob, struct buf *ib, const struct mkd_renderer *rndr);
#endif /* ndef LITHIUM_MARKDOWN_H */
/* vim: set filetype=c: */
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