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0001 // Copyright 2022 Google LLC
0002 //
0003 // Use of this source code is governed by an MIT-style
0004 // license that can be found in the LICENSE file or at
0005 // https://opensource.org/licenses/MIT.
0006 
0007 #ifndef THIRD_PARTY_UTF8_RANGE_UTF8_VALIDITY_H_
0008 #define THIRD_PARTY_UTF8_RANGE_UTF8_VALIDITY_H_
0009 
0010 #include <cstddef>
0011 
0012 #include "absl/strings/string_view.h"
0013 
0014 namespace utf8_range {
0015 
0016 // Returns true if the sequence of characters is a valid UTF-8 sequence.
0017 bool IsStructurallyValid(absl::string_view str);
0018 
0019 // Returns the length in bytes of the prefix of str that is all
0020 // structurally valid UTF-8.
0021 size_t SpanStructurallyValid(absl::string_view str);
0022 
0023 }  // namespace utf8_range
0024 
0025 #endif  // THIRD_PARTY_UTF8_RANGE_UTF8_VALIDITY_H_