blob: 888433fb4d4926d1d2df6e4dfa81f3748b28e102 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <string>
namespace base {
class Value;
class JSONWriter {
enum Options {
// This option instructs the writer that if a Binary value is encountered,
// the value (and key if within a dictionary) will be omitted from the
// output, and success will be returned. Otherwise, if a binary value is
// encountered, failure will be returned.
// Return a slightly nicer formatted json string (pads with whitespace to
// help with readability).
// Given a root node, generates a JSON string and puts it into |json|.
// The output string is overwritten and not appended.
// 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)? Return true on success and false on failure.
static bool Write(const Value& node, std::string* json);
// Same as above but with |options| which is a bunch of JSONWriter::Options
// bitwise ORed together. Return true on success and false on failure.
static bool WriteWithOptions(const Value& node,
int options,
std::string* json);
JSONWriter(int options, std::string* json);
// Called recursively to build the JSON string. When completed,
// |json_string_| will contain the JSON.
bool BuildJSONString(const Value& node, size_t depth);
// Adds space to json_string_ for the indent level.
void IndentLine(size_t depth);
bool omit_binary_values_;
bool pretty_print_;
// Where we write JSON data as we generate it.
std::string* json_string_;
JSONWriter(const JSONWriter&) = delete;
JSONWriter& operator=(const JSONWriter&) = delete;
} // namespace base