Files
ICD.Common.Utils/ICD.Common.Utils/Extensions/JsonReaderExtensions.cs

329 lines
9.7 KiB
C#

#if NETFRAMEWORK
extern alias RealNewtonsoft;
using RealNewtonsoft.Newtonsoft.Json;
#else
using Newtonsoft.Json;
#endif
using System;
using System.Text.RegularExpressions;
using ICD.Common.Properties;
namespace ICD.Common.Utils.Extensions
{
/// <summary>
/// Extension methods for working with JSON.
/// </summary>
public static class JsonReaderExtensions
{
/// <summary>
/// Reads the current token in the reader and deserializes to the given type.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="extends"></param>
/// <returns></returns>
public static T ReadAsObject<T>([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
JsonSerializer serializer =
#if SIMPLSHARP
new JsonSerializer();
#else
JsonSerializer.CreateDefault();
#endif
return serializer.Deserialize<T>(extends);
}
/// <summary>
/// Reads through the current object token and calls the callback for each property value.
/// </summary>
/// <param name="extends"></param>
/// <param name="serializer"></param>
/// <param name="readPropertyValue"></param>
public static void ReadObject([NotNull] this JsonReader extends, [NotNull] JsonSerializer serializer,
[NotNull] Action<string, JsonReader, JsonSerializer> readPropertyValue)
{
if (extends == null)
throw new ArgumentNullException("extends");
if (serializer == null)
throw new ArgumentNullException("serializer");
if (readPropertyValue == null)
throw new ArgumentNullException("readPropertyValue");
if (extends.TokenType == JsonToken.Null)
return;
if (extends.TokenType != JsonToken.StartObject)
throw new FormatException(string.Format("Expected {0} got {1}", JsonToken.StartObject,
extends.TokenType));
while (extends.Read())
{
if (extends.TokenType == JsonToken.EndObject)
break;
// Get the property
if (extends.TokenType != JsonToken.PropertyName)
continue;
string property = (string)extends.Value;
// Read into the value
extends.Read();
readPropertyValue(property, extends, serializer);
}
}
/// <summary>
/// Gets the current value as a Type.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
[PublicAPI]
[CanBeNull]
public static Type GetValueAsType([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
if (extends.TokenType == JsonToken.Null)
return null;
string value = extends.GetValueAsString();
return Type.GetType(value);
}
/// <summary>
/// Gets the current value as an unsigned integer.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
[PublicAPI]
public static uint GetValueAsUInt([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
if (extends.TokenType == JsonToken.Integer)
return (uint)(long)extends.Value;
string message = string.Format("Token {0} {1} is not {2}", extends.TokenType, extends.Value,
JsonToken.Integer);
throw new InvalidCastException(message);
}
/// <summary>
/// Gets the current value as an integer.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
[PublicAPI]
public static int GetValueAsInt([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
if (extends.TokenType == JsonToken.Integer)
return (int)(long)extends.Value;
string message = string.Format("Token {0} {1} is not {2}", extends.TokenType, extends.Value,
JsonToken.Integer);
throw new InvalidCastException(message);
}
/// <summary>
/// Gets the current value as a long.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
[PublicAPI]
public static long GetValueAsLong([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
if (extends.TokenType == JsonToken.Integer)
return (long)extends.Value;
string message = string.Format("Token {0} {1} is not {2}", extends.TokenType, extends.Value,
JsonToken.Integer);
throw new InvalidCastException(message);
}
/// <summary>
/// Gets the current value as an unsigned long.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
[PublicAPI]
public static ulong GetValueAsULong([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
if (extends.TokenType == JsonToken.Integer)
return (ulong)extends.Value;
string message = string.Format("Token {0} {1} is not {2}", extends.TokenType, extends.Value,
JsonToken.Integer);
throw new InvalidCastException(message);
}
/// <summary>
/// Gets the current value as a float.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
[PublicAPI]
public static float GetValueAsFloat([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
if (extends.TokenType == JsonToken.Float || extends.TokenType == JsonToken.Integer)
return (float)extends.Value;
string message = string.Format("Token {0} {1} is not {2}", extends.TokenType, extends.Value,
JsonToken.Integer);
throw new InvalidCastException(message);
}
/// <summary>
/// Gets the current value as a double.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
[PublicAPI]
public static double GetValueAsDouble([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
if (extends.TokenType == JsonToken.Float || extends.TokenType == JsonToken.Integer)
return (double)extends.Value;
string message = string.Format("Token {0} {1} is not {2}", extends.TokenType, extends.Value,
JsonToken.Integer);
throw new InvalidCastException(message);
}
/// <summary>
/// Gets the current value as a string.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
[PublicAPI]
public static string GetValueAsString([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
#if !SIMPLSHARP
// Newer versions of NewtonSoft try to be helpful and interpret strings as DateTimes without any consideration for different DateTime formats.
if (extends.TokenType == JsonToken.Date && extends.DateParseHandling != DateParseHandling.None)
throw new InvalidOperationException("DateParseHandling needs to be set to None");
#endif
if (!extends.TokenType.IsPrimitive())
throw new FormatException("Expected primitive token type but got " + extends.TokenType);
return extends.Value == null ? null : extends.Value.ToString();
}
/// <summary>
/// Gets the current value as a bool.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
[PublicAPI]
public static bool GetValueAsBool([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
if (extends.TokenType == JsonToken.Boolean)
return (bool)extends.Value;
string message = string.Format("Token {0} {1} is not {2}", extends.TokenType, extends.Value,
JsonToken.Boolean);
throw new InvalidCastException(message);
}
/// <summary>
/// Gets the current value as an enum.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
[PublicAPI]
public static T GetValueAsEnum<T>([NotNull] this JsonReader extends)
where T : struct, IConvertible
{
if (extends == null)
throw new ArgumentNullException("extends");
if (extends.TokenType == JsonToken.String)
return EnumUtils.Parse<T>(extends.GetValueAsString(), true);
return (T)(object)extends.GetValueAsInt();
}
/// <summary>
/// Gets the current value as a guid.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
[PublicAPI]
public static Guid GetValueAsGuid([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
string stringValue = extends.GetValueAsString();
return new Guid(stringValue);
}
/// <summary>
/// Gets the current value as a date.
/// </summary>
/// <param name="extends"></param>
/// <returns></returns>
public static DateTime GetValueAsDateTime([NotNull] this JsonReader extends)
{
if (extends == null)
throw new ArgumentNullException("extends");
#if !SIMPLSHARP
// Newer NewtonSoft tries to be helpful by assuming that anything that looks like a DateTime must be a date.
if (extends.DateParseHandling != DateParseHandling.None)
return (DateTime)extends.Value;
#endif
/*
"\"\\/Date(1335205592410)\\/\"" .NET JavaScriptSerializer
"\"\\/Date(1335205592410-0500)\\/\"" .NET DataContractJsonSerializer
"2012-04-23T18:25:43.511Z" JavaScript built-in JSON object
"2012-04-21T18:25:43-05:00" ISO 8601
*/
string serial = extends.GetValueAsString();
Match match;
if (RegexUtils.Matches(serial, @"Date\((?'date'\d+)(?'zone'(-|\+)\d+)?\)", out match))
{
long ms = long.Parse(match.Groups["date"].Value);
DateTime dateTime = DateTimeUtils.FromEpochMilliseconds(ms);
if (!match.Groups["zone"].Success)
return dateTime;
// No TimeZoneInfo in CF, so now things get gross
dateTime = DateTime.SpecifyKind(dateTime, DateTimeKind.Unspecified);
serial = dateTime.ToIso() + match.Groups["zone"].Value;
}
return DateTimeUtils.FromIso8601(serial);
}
}
}