n_markdown.h

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/*
 * Nilorea Library
 * Copyright (C) 2005-2026 Castagnier Mickael
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

 
#ifndef N_MARKDOWN_H
#define N_MARKDOWN_H
 
#include <stddef.h>

#define N_MARKDOWN_BOLD (1u << 0)
#define N_MARKDOWN_ITALIC (1u << 1)
#define N_MARKDOWN_CODE (1u << 2)
#define N_MARKDOWN_LINK (1u << 3)
#define N_MARKDOWN_STRIKE (1u << 4)

#define N_MARKDOWN_HEADINGS (1u << 0)
#define N_MARKDOWN_TABLES (1u << 1)
#define N_MARKDOWN_AUTOLINKS (1u << 2)
#define N_MARKDOWN_STRIKETHROUGH (1u << 3)
#define N_MARKDOWN_ESCAPES (1u << 4)
#define N_MARKDOWN_ALL (N_MARKDOWN_HEADINGS | N_MARKDOWN_TABLES)
#define N_MARKDOWN_INLINE_ALL \
    (N_MARKDOWN_AUTOLINKS | N_MARKDOWN_STRIKETHROUGH | N_MARKDOWN_ESCAPES)

#define N_MARKDOWN_ALIGN_LEFT 0
#define N_MARKDOWN_ALIGN_CENTER 1
#define N_MARKDOWN_ALIGN_RIGHT 2

enum n_markdown_block_kind {
    N_MARKDOWN_PARA = 0,   
    N_MARKDOWN_QUOTE,      
    N_MARKDOWN_CODE_BLOCK, 
    N_MARKDOWN_UL,         
    N_MARKDOWN_OL,         
    N_MARKDOWN_HEADING,    
    N_MARKDOWN_TABLE       
};

typedef struct n_markdown_span {
    char* text;
    char* url;
    unsigned style;
} n_markdown_span;

typedef struct n_markdown_inline {
    n_markdown_span* spans;
    size_t n_spans;
} n_markdown_inline;

typedef struct n_markdown_block {
    int kind; 
    n_markdown_inline inl;
    char* code;
    n_markdown_inline* items;
    size_t n_items;
    int level;
    size_t n_cols;
    unsigned char* align;
} n_markdown_block;

typedef struct n_markdown_doc {
    n_markdown_block* blocks;
    size_t n_blocks;
} n_markdown_doc;

void n_markdown_parse(const char* text, size_t len, n_markdown_doc* out);

void n_markdown_parse_ex(const char* text, size_t len, unsigned flags, n_markdown_doc* out);

void n_markdown_free(n_markdown_doc* doc);

int n_markdown_has_markup(const char* text, size_t len);

int n_markdown_has_markup_ex(const char* text, size_t len, unsigned flags);
 
#endif /* N_MARKDOWN_H */