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-// Protocol Buffers - Google's data interchange format
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-// Copyright 2008 Google Inc. All rights reserved.
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-// https://developers.google.com/protocol-buffers/
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-//
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-// Redistribution and use in source and binary forms, with or without
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-// modification, are permitted provided that the following conditions are
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-// met:
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-//
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-// * Redistributions of source code must retain the above copyright
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-// notice, this list of conditions and the following disclaimer.
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-// * Redistributions in binary form must reproduce the above
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-// copyright notice, this list of conditions and the following disclaimer
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-// in the documentation and/or other materials provided with the
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-// distribution.
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-// * Neither the name of Google Inc. nor the names of its
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-// contributors may be used to endorse or promote products derived from
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-// this software without specific prior written permission.
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-//
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-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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-
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-#ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_SNAKE2CAMEL_OBJECTWRITER_H__
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-#define GOOGLE_PROTOBUF_UTIL_CONVERTER_SNAKE2CAMEL_OBJECTWRITER_H__
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-
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-#include <string>
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-
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-#include <google/protobuf/stubs/common.h>
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-#include <google/protobuf/stubs/strutil.h>
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-#include <google/protobuf/stubs/stringpiece.h>
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-#include <google/protobuf/util/internal/object_writer.h>
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-#include <google/protobuf/util/internal/utility.h>
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-
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-namespace google {
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-namespace protobuf {
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-namespace util {
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-namespace converter {
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-
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-// Snake2CamelObjectWriter is an ObjectWriter than translates each field name
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-// from snake_case to camelCase. Typical usage is:
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-// ProtoStreamObjectSource psos(...);
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-// JsonObjectWriter jow(...);
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-// Snake2CamelObjectWriter snake_to_camel(&jow);
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-// psos.writeTo(&snake_to_camel);
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-class Snake2CamelObjectWriter : public ObjectWriter {
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- public:
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- explicit Snake2CamelObjectWriter(ObjectWriter* ow)
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- : ow_(ow), normalize_case_(true) {}
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- virtual ~Snake2CamelObjectWriter() {}
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-
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- // ObjectWriter methods.
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- virtual Snake2CamelObjectWriter* StartObject(StringPiece name) {
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- ow_->StartObject(name);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* EndObject() {
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- ow_->EndObject();
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* StartList(StringPiece name) {
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- ow_->StartList(name);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* EndList() {
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- ow_->EndList();
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* RenderBool(StringPiece name, bool value) {
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- ow_->RenderBool(name, value);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* RenderInt32(StringPiece name, int32 value) {
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- ow_->RenderInt32(name, value);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* RenderUint32(StringPiece name,
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- uint32 value) {
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- ow_->RenderUint32(name, value);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* RenderInt64(StringPiece name, int64 value) {
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- ow_->RenderInt64(name, value);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* RenderUint64(StringPiece name,
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- uint64 value) {
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- ow_->RenderUint64(name, value);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* RenderDouble(StringPiece name,
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- double value) {
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- ow_->RenderDouble(name, value);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* RenderFloat(StringPiece name, float value) {
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- ow_->RenderFloat(name, value);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* RenderString(StringPiece name,
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- StringPiece value) {
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- ow_->RenderString(name, value);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* RenderBytes(StringPiece name,
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- StringPiece value) {
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- ow_->RenderBytes(name, value);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* RenderNull(StringPiece name) {
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- ow_->RenderNull(name);
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- return this;
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- }
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-
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- virtual Snake2CamelObjectWriter* DisableCaseNormalizationForNextKey() {
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- normalize_case_ = false;
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- return this;
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- }
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-
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- private:
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- ObjectWriter* ow_;
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- bool normalize_case_;
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-
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- bool ShouldNormalizeCase(StringPiece name) {
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- if (normalize_case_) {
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- return !IsCamel(name);
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- } else {
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- normalize_case_ = true;
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- return false;
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- }
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- }
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-
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- bool IsCamel(StringPiece name) {
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- return name.empty() || (ascii_islower(name[0]) && !name.contains("_"));
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- }
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-
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- GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(Snake2CamelObjectWriter);
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-};
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-
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-} // namespace converter
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-} // namespace util
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-} // namespace protobuf
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-
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-} // namespace google
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-#endif // GOOGLE_PROTOBUF_UTIL_CONVERTER_SNAKE2CAMEL_OBJECTWRITER_H__
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