Import YamlDotNet.
This commit is contained in:
136
Assets/YamlDotNet/RepresentationModel/LibYamlEventStream.cs
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136
Assets/YamlDotNet/RepresentationModel/LibYamlEventStream.cs
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// This file is part of YamlDotNet - A .NET library for YAML.
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// Copyright (c) Antoine Aubry and contributors
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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// of the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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using System;
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using System.IO;
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using YamlDotNet.Core;
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using YamlDotNet.Core.Events;
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namespace YamlDotNet.RepresentationModel
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{
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/// <summary>
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/// Represents a LibYAML event stream.
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/// </summary>
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public class LibYamlEventStream
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{
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private readonly IParser parser;
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/// <summary>
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/// Initializes a new instance of the <see cref="LibYamlEventStream"/> class
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/// from the specified <see cref="IParser"/>.
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/// </summary>
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public LibYamlEventStream(IParser iParser)
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{
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parser = iParser ?? throw new ArgumentNullException(nameof(iParser));
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}
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public void WriteTo(TextWriter textWriter)
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{
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while (parser.MoveNext())
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{
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switch (parser.Current)
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{
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case AnchorAlias anchorAlias:
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textWriter.Write("=ALI *");
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textWriter.Write(anchorAlias.Value);
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break;
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case DocumentEnd documentEnd:
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textWriter.Write("-DOC");
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if (!documentEnd.IsImplicit)
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{
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textWriter.Write(" ...");
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}
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break;
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case DocumentStart documentStart:
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textWriter.Write("+DOC");
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if (!documentStart.IsImplicit)
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{
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textWriter.Write(" ---");
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}
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break;
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case MappingEnd _:
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textWriter.Write("-MAP");
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break;
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case MappingStart mappingStart:
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textWriter.Write("+MAP");
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WriteAnchorAndTag(textWriter, mappingStart);
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break;
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case Scalar scalar:
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textWriter.Write("=VAL");
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WriteAnchorAndTag(textWriter, scalar);
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switch (scalar.Style)
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{
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case ScalarStyle.DoubleQuoted: textWriter.Write(" \""); break;
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case ScalarStyle.SingleQuoted: textWriter.Write(" '"); break;
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case ScalarStyle.Folded: textWriter.Write(" >"); break;
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case ScalarStyle.Literal: textWriter.Write(" |"); break;
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default: textWriter.Write(" :"); break;
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}
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foreach (var character in scalar.Value)
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{
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switch (character)
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{
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case '\b': textWriter.Write("\\b"); break;
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case '\t': textWriter.Write("\\t"); break;
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case '\n': textWriter.Write("\\n"); break;
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case '\r': textWriter.Write("\\r"); break;
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case '\\': textWriter.Write("\\\\"); break;
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default: textWriter.Write(character); break;
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}
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}
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break;
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case SequenceEnd _:
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textWriter.Write("-SEQ");
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break;
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case SequenceStart sequenceStart:
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textWriter.Write("+SEQ");
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WriteAnchorAndTag(textWriter, sequenceStart);
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break;
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case StreamEnd _:
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textWriter.Write("-STR");
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break;
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case StreamStart _:
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textWriter.Write("+STR");
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break;
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}
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textWriter.WriteLine();
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}
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}
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private void WriteAnchorAndTag(TextWriter textWriter, NodeEvent nodeEvent)
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{
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if (!nodeEvent.Anchor.IsEmpty)
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{
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textWriter.Write(" &");
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textWriter.Write(nodeEvent.Anchor);
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}
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if (!nodeEvent.Tag.IsEmpty)
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{
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textWriter.Write(" <");
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textWriter.Write(nodeEvent.Tag.Value);
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textWriter.Write(">");
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}
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}
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}
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}
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