#region License
// Copyright (c) 2007 James Newton-King
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;
using Newtonsoft.Json.Utilities;
using Newtonsoft.Json.Linq;
using System.Globalization;
namespace Newtonsoft.Json.Bson{
/// <summary>
/// Represents a writer that provides a fast, non-cached, forward-only way of generating Json data.
/// </summary>
public class BsonWriter : JsonWriter
{
private readonly BsonBinaryWriter _writer;
private BsonToken _root;
private BsonToken _parent;
private string _propertyName;
/// <summary>
/// Initializes a new instance of the <see cref="BsonWriter"/> class.
/// </summary>
/// <param name="stream">The stream.</param>
public BsonWriter(Stream stream)
{
ValidationUtils.ArgumentNotNull(stream, "stream");
_writer = new BsonBinaryWriter(stream);
}
/// <summary>
/// Flushes whatever is in the buffer to the underlying streams and also flushes the underlying stream.
/// </summary>
public override void Flush()
{
_writer.Flush();
}
/// <summary>
/// Writes the end.
/// </summary>
/// <param name="token">The token.</param>
protected override void WriteEnd(JsonToken token)
{
base.WriteEnd(token);
RemoveParent();
if (Top == 0)
{
_writer.WriteToken(_root);
}
}
/// <summary>
/// Writes out a comment <code>/*...*/</code> containing the specified text.
/// </summary>
/// <param name="text">Text to place inside the comment.</param>
public override void WriteComment(string text)
{
throw new JsonWriterException("Cannot write JSON comment as BSON.");
}
/// <summary>
/// Writes the start of a constructor with the given name.
/// </summary>
/// <param name="name">The name of the constructor.</param>
public override void WriteStartConstructor(string name)
{
throw new JsonWriterException("Cannot write JSON constructor as BSON.");
}
/// <summary>
/// Writes raw JSON.
/// </summary>
/// <param name="json">The raw JSON to write.</param>
public override void WriteRaw(string json)
{
throw new JsonWriterException("Cannot write raw JSON as BSON.");
}
/// <summary>
/// Writes raw JSON where a value is expected and updates the writer's state.
/// </summary>
/// <param name="json">The raw JSON to write.</param>
public override void WriteRawValue(string json)
{
throw new JsonWriterException("Cannot write raw JSON as BSON.");
}
/// <summary>
/// Writes the beginning of a Json array.
/// </summary>
public override void WriteStartArray()
{
base.WriteStartArray();
AddParent(new BsonArray());
}
/// <summary>
/// Writes the beginning of a Json object.
/// </summary>
public override void WriteStartObject()
{
base.WriteStartObject();
AddParent(new BsonObject());
}
/// <summary>
/// Writes the property name of a name/value pair on a Json object.
/// </summary>
/// <param name="name">The name of the property.</param>
public override void WritePropertyName(string name)
{
base.WritePropertyName(name);
_propertyName = name;
}
private void AddParent(BsonToken container)
{
AddToken(container);
_parent = container;
}
private void RemoveParent()
{
_parent = _parent.Parent;
}
private void AddValue(object value, BsonType type)
{
AddToken(new BsonValue(value, type));
}
internal void AddToken(BsonToken token)
{
if (_parent != null)
{
if (_parent is BsonObject)
{
((BsonObject)_parent).Add(_propertyName, token);
_propertyName = null;
}
else
{
((BsonArray)_parent).Add(token);
}
}
else
{
_parent = token;
_root = token;
}
}
#region WriteValue methods
/// <summary>
/// Writes a null value.
/// </summary>
public override void WriteNull()
{
base.WriteNull();
AddValue(null, BsonType.Null);
}
/// <summary>
/// Writes an undefined value.
/// </summary>
public override void WriteUndefined()
{
base.WriteUndefined();
AddValue(null, BsonType.Undefined);
}
/// <summary>
/// Writes a <see cref="String"/> value.
/// </summary>
/// <param name="value">The <see cref="String"/> value to write.</param>
public override void WriteValue(string value)
{
base.WriteValue(value);
if (value == null)
AddValue(null, BsonType.Null);
else
AddToken(new BsonString(value, true));
}
/// <summary>
/// Writes a <see cref="Int32"/> value.
/// </summary>
/// <param name="value">The <see cref="Int32"/> value to write.</param>
public override void WriteValue(int value)
{
base.WriteValue(value);
AddValue(value, BsonType.Integer);
}
/// <summary>
/// Writes a <see cref="UInt32"/> value.
/// </summary>
/// <param name="value">The <see cref="UInt32"/> value to write.</param>
[CLSCompliant(false)]
public override void WriteValue(uint value)
{
if (value > int.MaxValue)
throw new JsonWriterException("Value is too large to fit in a signed 32 bit integer. BSON does not support unsigned values.");
base.WriteValue(value);
AddValue(value, BsonType.Integer);
}
/// <summary>
/// Writes a <see cref="Int64"/> value.
/// </summary>
/// <param name="value">The <see cref="Int64"/> value to write.</param>
public override void WriteValue(long value)
{
base.WriteValue(value);
AddValue(value, BsonType.Long);
}
/// <summary>
/// Writes a <see cref="UInt64"/> value.
/// </summary>
/// <param name="value">The <see cref="UInt64"/> value to write.</param>
[CLSCompliant(false)]
public override void WriteValue(ulong value)
{
if (value > long.MaxValue)
throw new JsonWriterException("Value is too large to fit in a signed 64 bit integer. BSON does not support unsigned values.");
base.WriteValue(value);
AddValue(value, BsonType.Long);
}
/// <summary>
/// Writes a <see cref="Single"/> value.
/// </summary>
/// <param name="value">The <see cref="Single"/> value to write.</param>
public override void WriteValue(float value)
{
base.WriteValue(value);
AddValue(value, BsonType.Number);
}
/// <summary>
/// Writes a <see cref="Double"/> value.
/// </summary>
/// <param name="value">The <see cref="Double"/> value to write.</param>
public override void WriteValue(double value)
{
base.WriteValue(value);
AddValue(value, BsonType.Number);
}
/// <summary>
/// Writes a <see cref="Boolean"/> value.
/// </summary>
/// <param name="value">The <see cref="Boolean"/> value to write.</param>
public override void WriteValue(bool value)
{
base.WriteValue(value);
AddValue(value, BsonType.Boolean);
}
/// <summary>
/// Writes a <see cref="Int16"/> value.
/// </summary>
/// <param name="value">The <see cref="Int16"/> value to write.</param>
public override void WriteValue(short value)
{
base.WriteValue(value);
AddValue(value, BsonType.Integer);
}
/// <summary>
/// Writes a <see cref="UInt16"/> value.
/// </summary>
/// <param name="value">The <see cref="UInt16"/> value to write.</param>
[CLSCompliant(false)]
public override void WriteValue(ushort value)
{
base.WriteValue(value);
AddValue(value, BsonType.Integer);
}
/// <summary>
/// Writes a <see cref="Char"/> value.
/// </summary>
/// <param name="value">The <see cref="Char"/> value to write.</param>
public override void WriteValue(char value)
{
base.WriteValue(value);
AddToken(new BsonString(value.ToString(), true));
}
/// <summary>
/// Writes a <see cref="Byte"/> value.
/// </summary>
/// <param name="value">The <see cref="Byte"/> value to write.</param>
public override void WriteValue(byte value)
{
base.WriteValue(value);
AddValue(value, BsonType.Integer);
}
/// <summary>
/// Writes a <see cref="SByte"/> value.
/// </summary>
/// <param name="value">The <see cref="SByte"/> value to write.</param>
[CLSCompliant(false)]
public override void WriteValue(sbyte value)
{
base.WriteValue(value);
AddValue(value, BsonType.Integer);
}
/// <summary>
/// Writes a <see cref="Decimal"/> value.
/// </summary>
/// <param name="value">The <see cref="Decimal"/> value to write.</param>
public override void WriteValue(decimal value)
{
base.WriteValue(value);
AddValue(value, BsonType.Number);
}
/// <summary>
/// Writes a <see cref="DateTime"/> value.
/// </summary>
/// <param name="value">The <see cref="DateTime"/> value to write.</param>
public override void WriteValue(DateTime value)
{
base.WriteValue(value);
AddValue(value, BsonType.Date);
}
#if !PocketPC && !NET20
/// <summary>
/// Writes a <see cref="DateTimeOffset"/> value.
/// </summary>
/// <param name="value">The <see cref="DateTimeOffset"/> value to write.</param>
public override void WriteValue(DateTimeOffset value)
{
base.WriteValue(value);
AddValue(value, BsonType.Date);
}
#endif
/// <summary>
/// Writes a <see cref="T:Byte[]"/> value.
/// </summary>
/// <param name="value">The <see cref="T:Byte[]"/> value to write.</param>
public override void WriteValue(byte[] value)
{
base.WriteValue(value);
AddValue(value, BsonType.Binary);
}
#endregion
/// <summary>
/// Writes a <see cref="T:Byte[]"/> value that represents a BSON object id.
/// </summary>
/// <param name="value"></param>
public void WriteObjectId(byte[] value)
{
ValidationUtils.ArgumentNotNull(value, "value");
if (value.Length != 12)
throw new Exception("An object id must be 12 bytes");
// hack to update the writer state
AutoComplete(JsonToken.Undefined);
AddValue(value, BsonType.Oid);
}
/// <summary>
/// Writes a BSON regex.
/// </summary>
/// <param name="pattern">The regex pattern.</param>
/// <param name="options">The regex options.</param>
public void WriteRegex(string pattern, string options)
{
ValidationUtils.ArgumentNotNull(pattern, "pattern");
// hack to update the writer state
AutoComplete(JsonToken.Undefined);
AddToken(new BsonRegex(pattern, options));
}
}
}
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