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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <google/protobuf/util/json_util.h>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/io/coded_stream.h>
#include <google/protobuf/io/zero_copy_stream.h>
#include <google/protobuf/util/internal/default_value_objectwriter.h>
#include <google/protobuf/util/internal/error_listener.h>
#include <google/protobuf/util/internal/json_objectwriter.h>
#include <google/protobuf/util/internal/json_stream_parser.h>
#include <google/protobuf/util/internal/protostream_objectsource.h>
#include <google/protobuf/util/internal/protostream_objectwriter.h>
#include <google/protobuf/util/type_resolver.h>
#include <google/protobuf/util/type_resolver_util.h>
#include <google/protobuf/stubs/bytestream.h>
#include <google/protobuf/stubs/status_macros.h>
namespace google {
namespace protobuf {
namespace util {
namespace internal {
void ZeroCopyStreamByteSink::Append(const char* bytes, size_t len) {
while (len > 0) {
void* buffer;
int length;
if (!stream_->Next(&buffer, &length)) {
// There isn't a way for ByteSink to report errors.
return;
}
if (len < length) {
memcpy(buffer, bytes, len);
stream_->BackUp(length - len);
break;
} else {
memcpy(buffer, bytes, length);
bytes += length;
len -= length;
}
}
}
} // namespace internal
util::Status BinaryToJsonStream(TypeResolver* resolver,
const string& type_url,
io::ZeroCopyInputStream* binary_input,
io::ZeroCopyOutputStream* json_output,
const JsonOptions& options) {
io::CodedInputStream in_stream(binary_input);
google::protobuf::Type type;
RETURN_IF_ERROR(resolver->ResolveMessageType(type_url, &type));
converter::ProtoStreamObjectSource proto_source(&in_stream, resolver, type);
io::CodedOutputStream out_stream(json_output);
converter::JsonObjectWriter json_writer(options.add_whitespace ? " " : "",
&out_stream);
if (options.always_print_primitive_fields) {
converter::DefaultValueObjectWriter default_value_writer(
resolver, type, &json_writer);
return proto_source.WriteTo(&default_value_writer);
} else {
return proto_source.WriteTo(&json_writer);
}
}
util::Status BinaryToJsonString(TypeResolver* resolver,
const string& type_url,
const string& binary_input,
string* json_output,
const JsonOptions& options) {
io::ArrayInputStream input_stream(binary_input.data(), binary_input.size());
io::StringOutputStream output_stream(json_output);
return BinaryToJsonStream(resolver, type_url, &input_stream, &output_stream,
options);
}
util::Status JsonToBinaryStream(TypeResolver* resolver,
const string& type_url,
io::ZeroCopyInputStream* json_input,
io::ZeroCopyOutputStream* binary_output) {
google::protobuf::Type type;
RETURN_IF_ERROR(resolver->ResolveMessageType(type_url, &type));
internal::ZeroCopyStreamByteSink sink(binary_output);
converter::NoopErrorListener listener;
converter::ProtoStreamObjectWriter proto_writer(resolver, type, &sink,
&listener);
converter::JsonStreamParser parser(&proto_writer);
const void* buffer;
int length;
while (json_input->Next(&buffer, &length)) {
if (length == 0) continue;
RETURN_IF_ERROR(
parser.Parse(StringPiece(static_cast<const char*>(buffer), length)));
}
RETURN_IF_ERROR(parser.FinishParse());
return util::Status::OK;
}
util::Status JsonToBinaryString(TypeResolver* resolver,
const string& type_url,
const string& json_input,
string* binary_output) {
io::ArrayInputStream input_stream(json_input.data(), json_input.size());
io::StringOutputStream output_stream(binary_output);
return JsonToBinaryStream(resolver, type_url, &input_stream, &output_stream);
}
} // namespace util
} // namespace protobuf
} // namespace google
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