/* Copyright 2013 Google Inc. All Rights Reserved.

   Distributed under MIT license.
   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
*/

/* Heuristics for deciding about the UTF8-ness of strings. */

#ifndef BROTLI_ENC_UTF8_UTIL_H_
#define BROTLI_ENC_UTF8_UTIL_H_

#include "../common/types.h"

namespace brotli {

static const double kMinUTF8Ratio = 0.75;

/* Returns 1 if at least min_fraction of the bytes between pos and
   pos + length in the (data, mask) ringbuffer is UTF8-encoded, otherwise
   returns 0. */
bool IsMostlyUTF8(const uint8_t* data, const size_t pos, const size_t mask,
                  const size_t length, const double min_fraction);

}  // namespace brotli

#endif  /* BROTLI_ENC_UTF8_UTIL_H_ */