// Copyright 2025 Google LLC

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

// https://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

#include "google/cloud/bigtable/bytes.h"

#include <array>

namespace google {

namespace cloud {

namespace bigtable {

GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_BEGIN

// Prints the bytes in the form B"...", where printable bytes are output

// normally, double quotes are backslash escaped, and non-printable characters

// are printed as a 3-digit octal escape sequence.

std::ostream& operator<<(std::ostream& os, Bytes const& bytes) {

os << R"(B")";

for (auto const byte : bytes.bytes_) {

if (byte == '"') {

os << R"(\")";

} else if (std::isprint(byte)) {

os << byte;

} else {

// This uses snprintf rather than iomanip so we don't mess up the

// formatting on `os` for other streaming operations.

std::array<char, sizeof(R"(\000)")> buf;

auto n = std::snprintf(buf.data(), buf.size(), R"(\%03o)",

static_cast<unsigned char>(byte));

if (n == static_cast<int>(buf.size() - 1)) {

os << buf.data();

} else {

os << R"(\?)";

}

}

}

// Can't use raw string literal here because of a doxygen bug.

return os << "\"";

}

GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_END

} // namespace bigtable

namespace bigtable_internal {

GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_BEGIN

struct BytesInternals {

static bigtable::Bytes Create(std::string rep) {

bigtable::Bytes bytes;

bytes.bytes_ = std::move(rep);

return bytes;

}

static std::string GetRep(bigtable::Bytes&& bytes) {

return std::move(bytes.bytes_);

}

};

GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_END

} // namespace bigtable_internal

} // namespace cloud

} // namespace google