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// Copyright 2008, Google Inc.
// All rights reserved.
//
// 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.
#ifndef BASE_JSON_WRITER_H_
#define BASE_JSON_WRITER_H_
#include <string>
#include "base/basictypes.h"
class Value;
class JSONWriter {
public:
// Given a root node, generates a JSON string and puts it into |json|.
// If |pretty_print| is true, return a slightly nicer formated json string
// (pads with whitespace to help readability). If |pretty_print| is false,
// we try to generate as compact a string as possible.
// TODO(tc): Should we generate json if it would be invalid json (e.g.,
// |node| is not a DictionaryValue/ListValue or if there are inf/-inf float
// values)?
static void Write(const Value* const node, bool pretty_print,
std::string* json);
private:
JSONWriter(bool pretty_print, std::string* json);
// Called recursively to build the JSON string. Whe completed, value is
// json_string_ will contain the JSON.
void BuildJSONString(const Value* const node, int depth);
// Appends a quoted, escaped, version of str to json_string_.
void AppendQuotedString(const std::wstring& str);
// Adds space to json_string_ for the indent level.
void IndentLine(int depth);
// Where we write JSON data as we generate it.
std::string* json_string_;
bool pretty_print_;
DISALLOW_COPY_AND_ASSIGN(JSONWriter);
};
#endif // BASE_JSON_WRITER_H_
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