8bb54b04ef
FYI: find ortools \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i 's/\(Copyright 2010\)-2018/\1-2021/g'
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
// Copyright 2010-2021 Google LLC
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef OR_TOOLS_BASE_ENCODINGUTILS_H_
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#define OR_TOOLS_BASE_ENCODINGUTILS_H_
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#include <string>
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namespace EncodingUtils {
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// Returns the number of characters of a UTF8-encoded string.
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inline int UTF8StrLen(const std::string& utf8_str) {
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if (utf8_str.empty()) return 0;
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const char* c = utf8_str.c_str();
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int count = 0;
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while (*c != '\0') {
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++count;
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// See http://en.wikipedia.org/wiki/UTF-8#Description .
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const unsigned char x = *c;
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c += x < 0xC0 ? 1 : x < 0xE0 ? 2 : x < 0xF0 ? 3 : 4;
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}
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return count;
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}
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} // namespace EncodingUtils
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#endif // OR_TOOLS_BASE_ENCODINGUTILS_H_
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