path: root/src/cmark.h

#ifndef _STDMD_H_
#define _STDMD_H_

#include <stdbool.h>
#include <stdio.h>
#include "buffer.h"
#include "chunk.h"
#include "references.h"

#define VERSION "0.1"
#define CODE_INDENT 4
#define EMPHASIS_STACK_LIMIT 1000

struct node_inl {
    enum {
        INL_STRING,
        INL_SOFTBREAK,
        INL_LINEBREAK,
        INL_CODE,
        INL_RAW_HTML,
        INL_EMPH,
        INL_STRONG,
        INL_LINK,
        INL_IMAGE
    } tag;
    union {
        chunk literal;
        struct node_inl *inlines;
        struct {
            struct node_inl *label;
            unsigned char *url;
            unsigned char *title;
        } linkable;
    } content;
    struct node_inl *next;
};

typedef struct node_inl node_inl;

// Types for blocks
struct ListData {
    enum {
        bullet,
        ordered
    }  list_type;
    int               marker_offset;
    int               padding;
    int               start;
    enum {
        period,
        parens
    } delimiter;
    unsigned char     bullet_char;
    bool              tight;
};

struct FencedCodeData {
    int               fence_length;
    int               fence_offset;
    unsigned char     fence_char;
    strbuf            info;
};

struct node_block {
    enum {
        BLOCK_DOCUMENT,
        BLOCK_BQUOTE,
        BLOCK_LIST,
        BLOCK_LIST_ITEM,
        BLOCK_FENCED_CODE,
        BLOCK_INDENTED_CODE,
        BLOCK_HTML,
        BLOCK_PARAGRAPH,
        BLOCK_ATX_HEADER,
        BLOCK_SETEXT_HEADER,
        BLOCK_HRULE,
        BLOCK_REFERENCE_DEF
    } tag;
    int start_line;
    int start_column;
    int end_line;
    bool open;
    bool last_line_blank;
    struct node_block* children;
    struct node_block* last_child;
    struct node_block* parent;
    struct node_block* top;
    strbuf string_content;
    node_inl* inline_content;

    union  {
        struct ListData list;
        struct FencedCodeData code;
        struct {
            int level;
        } header;
        struct {
            reference_map *refmap;
        } document;
    } as;

    struct node_block *next;
    struct node_block *prev;
};

typedef struct node_block node_block;

node_block *cmark_parse_document(const unsigned char *buffer, size_t len);
node_block *cmark_parse_file(FILE *f);

void cmark_free_nodes(node_block *e);

void cmark_debug_print(node_block *root);
void cmark_render_html(strbuf *html, node_block *root);

#endif