module markdown

import strings

fn C.md_html(const_input &char, input_size u32, process_output ProcessFn, userdata voidptr, parser_flags u32, renderer_flags u32) int

const need_html_esc_flag = 0x1
const need_url_esc_flag = 0x2
const md_html_flag_debug = 0x0001
const md_html_flag_verbatim_entities = 0x0002
const md_html_flag_skip_utf8_bom = 0x0004

type ProcessFn = fn (const_t &char, s u32, x voidptr)

fn write_data_cb(const_txt &char, size u32, userdata voidptr) {
    s := unsafe { tos(&u8(const_txt), int(size)) }
    mut sb := unsafe { &strings.Builder(userdata) }
    sb.write_string(s)
}

pub fn to_html(input string) string {
    mut wr := strings.new_builder(200)
    C.md_html(input.str, input.len, write_data_cb, &wr, C.MD_DIALECT_GITHUB, 0)
    return wr.str().trim_space()
}