Move NetCore project to use .NET SDK
- Formatting.NetCore now targets `netstandard1.3`
- was `Profile259` aka `portable-net45+wp80+win8+wpa81`, approximately `netstandard1.0`
- but Newtonsoft.Json.Bson supports `netstandard1.3` and up
- use Newtonsoft.Json.Bson in NetCore projects
- can now multi-target NetCore.Test as well
- nits:
- align src/ Formatting projects as much as possible
- align test/ Formatting projects as much as possible
- clean up the Microsoft.TestCommon project slightly
- note: NetCore project names make no sense but I'm leaving them alone for this PR
React to using Newtonsoft.Json.Bson everywhere
- remove deprecated `BsonWriter` mentions entirely
- remove legacy BSON writer test workaround
Remove unnecessary `ConcurrentDictionary` class
- was not available in `Profile259`
- leave tests to confirm correct operation w/ "real" class
Remove `UriQueryUtility` because `WebUtility` is available everywhere
- leave test to confirm `WebUtility` continues to behave about the same
- handle `WebUtility` being a `public` class
- change other tests to handle `WebUtility.UrlEncode(...)` encoding to uppercase
- unlike `UriQueryUtility.UrlEncode(...)`
Add simple classes to NetCore project
- use `ICloneable` copy to get more classes compiling
- helps NetCore in similar way to existing `MediaTypeHeaderValueExtensions`
- use `InvalidEnumArgumentException` copy to simplify code and testing
- both not available in `netstandard1.3` (or available packages) but easily duplicated
Remove unnecessary NetCore-specific GlobalSuppressions.cs file
Use `NameValueCollection` everywhere
- available (but not serializable) in `netstandard1.3`
Add `MaxDepth` support in NetCore assembly
- remove an unnecessary suppression about `MaxDepth` in `BaseJsonMediaTypeFormatter`
Add `UseDataContractJsonSerializer` support in NetCore assembly
- `XsdDataContractExporter` remains unavailable
- update XML DCS tests to handle this (previously not in NetCore assembly)
- try various workarounds
- `ReadOnlyStreamWithEncodingPreamble` causes tests to hit dotnet/runtime#80160
- restriction to UTF8 when writing is a significant issue
Copy `TranscodingStream` and related files from dotnet/runtime
- my runtime clone was at 88868b7a781f4e5b9037b8721f30440207a7aa42
Adjust `TranscodingStream` and related code to compile and run here
- add conditions to avoid references to version-specific API
- remove references to internal dotnet/runtime code
- rewrite some code more generically if performance impact likely minor
- use Microsoft.TestCommon instead of directly relying on Xunit in tests
- use C# 9.0
Use `TranscodingStream` in JSON and XML formatters
- remove `ReadOnlyStreamWithEncodingPreamble` and its tests
- was insufficient in general and doesn't work correctly in `netstandard1.3`
- see dotnet/runtime#80160
- now support a much broader set of encodings in JSON and XML formatters
- not just UTF8, UTF16BE, and UTF16LE
- JSON formatter already supported every encoding when `UseDataContractJsonSerializer` was `false`
- no longer have this downside when property is `true`
- however, quotas remain unsupported in `netstandard1.3` version of this formatter when property is `true`
- XML formatter requirement for an XML declaration in non-UTF8 content was general and is no longer an issue
Add `MediaTypeMappings` support in NetCore assembly
Add `IRequiredMemberSelector` support in NetCore assembly
Remove unnecessary NETFX_CORE workarounds
- use `DefaultContractResolver`, `GuidAttribute`, `TypeDescriptor`, `XmlElement`, `XmlNode` classes
- use `IRequiredMemberSelector` interface
- use `RequestMessage.CreateResponse()` extension method
- all available in `netstandard1.3`
- `JsonContractResolver` use is something of a late Newtonsoft.Json version reaction
- was held back by missing `IRequiredMemberSelector`
Work around missing features in `netstandard1.3`
- get classes now included in NetCore assembly compiling
- `SerializationAttribute` is not available
- therefore `Exception` is not serializable
- therefore `DefaultContractResolver.IgnoreSerializableAttribute` is not available
- `Stream.(Begin|End)(Read|Write)` and `Stream.Close()` are not available
- nit: clean up `MultipartFormDataStreamProvider` whitespace
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