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33 lines
904 B
33 lines
904 B
4 months ago
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/* Copyright 2013 Google Inc. All Rights Reserved.
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Distributed under MIT license.
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See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
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*/
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/* Heuristics for deciding about the UTF8-ness of strings. */
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#ifndef BROTLI_ENC_UTF8_UTIL_H_
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#define BROTLI_ENC_UTF8_UTIL_H_
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#include "../common/platform.h"
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#include <brotli/types.h>
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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static const double kMinUTF8Ratio = 0.75;
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/* Returns 1 if at least min_fraction of the bytes between pos and
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pos + length in the (data, mask) ring-buffer is UTF8-encoded, otherwise
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returns 0. */
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BROTLI_INTERNAL BROTLI_BOOL BrotliIsMostlyUTF8(
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const uint8_t* data, const size_t pos, const size_t mask,
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const size_t length, const double min_fraction);
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#if defined(__cplusplus) || defined(c_plusplus)
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} /* extern "C" */
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#endif
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#endif /* BROTLI_ENC_UTF8_UTIL_H_ */
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