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