Add chrome to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15 0039d316-1c4b-4281-b951-d872f2087c98

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diff --git a/chrome/common/json_value_serializer.h b/chrome/common/json_value_serializer.h
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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 CHROME_COMMON_JSON_VALUE_SERIALIZER_H__
+#define CHROME_COMMON_JSON_VALUE_SERIALIZER_H__
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/values.h"
+
+class JSONStringValueSerializer : public ValueSerializer {
+ public:
+  // json_string is the string that will be source of the deserialization
+  // or the destination of the serialization.  The caller of the constructor
+  // retains ownership of the string.
+  JSONStringValueSerializer(std::string* json_string)
+      : json_string_(json_string),
+        initialized_with_const_string_(false),
+        pretty_print_(false) {
+  }
+
+  // This version allows initialization with a const string reference for
+  // deserialization only.
+  JSONStringValueSerializer(const std::string& json_string)
+      : json_string_(&const_cast<std::string&>(json_string)),
+        initialized_with_const_string_(true) {
+  }
+
+  ~JSONStringValueSerializer();
+
+  // Attempt to serialize the data structure represented by Value into
+  // JSON.  If the return value is true, the result will have been written
+  // into the string passed into the constructor.
+  bool Serialize(const Value& root);
+
+  // Attempt to deserialize the data structure encoded in the string passed
+  // in to the constructor into a structure of Value objects.  If the return
+  // value is true, the |root| parameter will be set to point to a new Value
+  // object that corresponds to the values represented in the string.  The
+  // caller takes ownership of the returned Value objects.
+  bool Deserialize(Value** root);
+
+  void set_pretty_print(bool new_value) { pretty_print_ = new_value; }
+  bool pretty_print() { return pretty_print_; }
+
+ private:
+  std::string* json_string_;
+  bool initialized_with_const_string_;
+  bool pretty_print_;  // If true, serialization will span multiple lines.
+
+  DISALLOW_EVIL_CONSTRUCTORS(JSONStringValueSerializer);
+};
+
+class JSONFileValueSerializer : public ValueSerializer {
+ public:
+  // json_file_patch is the path of a file that will be source of the
+  // deserialization or the destination of the serialization.
+  // When deserializing, the file should exist, but when serializing, the
+  // serializer will attempt to create the file at the specified location.
+  JSONFileValueSerializer(const std::wstring& json_file_path)
+    : json_file_path_(json_file_path) {}
+
+  ~JSONFileValueSerializer() {}
+
+  // DO NOT USE except in unit tests to verify the file was written properly.
+  // We should never serialize directly to a file since this will block the
+  // thread. Instead, serialize to a string and write to the file you want on
+  // the file thread.
+  //
+  // Attempt to serialize the data structure represented by Value into
+  // JSON.  If the return value is true, the result will have been written
+  // into the file whose name was passed into the constructor.
+  bool Serialize(const Value& root);
+
+  // Attempt to deserialize the data structure encoded in the file passed
+  // in to the constructor into a structure of Value objects.  If the return
+  // value is true, the |root| parameter will be set to point to a new Value
+  // object that corresponds to the values represented in the file.  The
+  // caller takes ownership of the returned Value objects.
+  bool Deserialize(Value** root);
+
+ private:
+  std::wstring json_file_path_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(JSONFileValueSerializer);
+};
+
+#endif  // CHROME_COMMON_JSON_VALUE_SERIALIZER_H__