sapling/eden/fs/utils/Utf8.cpp

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/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This software may be used and distributed according to the terms of the
* GNU General Public License version 2.
*/
#include "eden/fs/utils/Utf8.h"
#include <folly/Unicode.h>
namespace facebook {
namespace eden {
std::string ensureValidUtf8(folly::ByteRange str) {
std::string output;
output.reserve(str.size());
const unsigned char* begin = str.begin();
const unsigned char* const end = str.end();
while (begin != end) {
// codePointToUtf8 returns a std::string which is inefficient for something
// that always fits in 32 bits, but with SSO it probably never allocates at
// least.
output += folly::codePointToUtf8(folly::utf8ToCodePoint(begin, end, true));
}
return output;
}
} // namespace eden
} // namespace facebook