#include <stdint.h>

#include <stdlib.h>

#include <string.h>

#include "cmark.h"

int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {

  struct __attribute__((packed)) {

    int options;

    int width;

  } fuzz_config;

  if (size >= sizeof(fuzz_config)) {

    /* The beginning of `data` is treated as fuzzer configuration */

    memcpy(&fuzz_config, data, sizeof(fuzz_config));

    /* Mask off valid option bits */

    fuzz_config.options &= (CMARK_OPT_SOURCEPOS | CMARK_OPT_HARDBREAKS | CMARK_OPT_UNSAFE | CMARK_OPT_NOBREAKS | CMARK_OPT_NORMALIZE | CMARK_OPT_VALIDATE_UTF8 | CMARK_OPT_SMART);

    /* Remainder of input is the markdown */

    const char *markdown = (const char *)(data + sizeof(fuzz_config));

    const size_t markdown_size = size - sizeof(fuzz_config);

    cmark_node *doc = cmark_parse_document(markdown, markdown_size, fuzz_config.options);

    free(cmark_render_commonmark(doc, fuzz_config.options, fuzz_config.width));

    free(cmark_render_html(doc, fuzz_config.options));

    free(cmark_render_latex(doc, fuzz_config.options, fuzz_config.width));

    free(cmark_render_man(doc, fuzz_config.options, fuzz_config.width));

    free(cmark_render_xml(doc, fuzz_config.options));

    cmark_node_free(doc);

  }

  return 0;

}