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Diffstat (limited to 'src/json.cc')
-rw-r--r-- | src/json.cc | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/json.cc b/src/json.cc new file mode 100644 index 0000000..4bbf6e1 --- /dev/null +++ b/src/json.cc @@ -0,0 +1,53 @@ +// Copyright 2021 Google Inc. All Rights Reserved. +// +// 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 +// +// http://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 "json.h" + +#include <cstdio> +#include <string> + +std::string EncodeJSONString(const std::string& in) { + static const char* hex_digits = "0123456789abcdef"; + std::string out; + out.reserve(in.length() * 1.2); + for (std::string::const_iterator it = in.begin(); it != in.end(); ++it) { + char c = *it; + if (c == '\b') + out += "\\b"; + else if (c == '\f') + out += "\\f"; + else if (c == '\n') + out += "\\n"; + else if (c == '\r') + out += "\\r"; + else if (c == '\t') + out += "\\t"; + else if (0x0 <= c && c < 0x20) { + out += "\\u00"; + out += hex_digits[c >> 4]; + out += hex_digits[c & 0xf]; + } else if (c == '\\') + out += "\\\\"; + else if (c == '\"') + out += "\\\""; + else + out += c; + } + return out; +} + +void PrintJSONString(const std::string& in) { + std::string out = EncodeJSONString(in); + fwrite(out.c_str(), 1, out.length(), stdout); +} |