chore: 初始化北汽福田MES采集程序
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yexingqiang
227
Common/00-1Json8.3/Json8.3/Converters/RegexConverter.cs
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227
Common/00-1Json8.3/Json8.3/Converters/RegexConverter.cs
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#region License
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// Copyright (c) 2007 James Newton-King
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all 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,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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#endregion
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using System;
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using System.Text.RegularExpressions;
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using Newtonsoft.Json.Bson;
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using System.Globalization;
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using Newtonsoft.Json.Serialization;
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namespace Newtonsoft.Json.Converters
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{
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/// <summary>
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/// Converts a <see cref="Regex"/> to and from JSON and BSON.
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/// </summary>
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public class RegexConverter : JsonConverter
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{
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private const string PatternName = "Pattern";
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private const string OptionsName = "Options";
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/// <summary>
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/// Writes the JSON representation of the object.
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/// </summary>
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/// <param name="writer">The <see cref="JsonWriter"/> to write to.</param>
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/// <param name="value">The value.</param>
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/// <param name="serializer">The calling serializer.</param>
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public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
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{
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Regex regex = (Regex)value;
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BsonWriter bsonWriter = writer as BsonWriter;
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if (bsonWriter != null)
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{
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WriteBson(bsonWriter, regex);
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}
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else
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{
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WriteJson(writer, regex, serializer);
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}
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}
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private bool HasFlag(RegexOptions options, RegexOptions flag)
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{
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return ((options & flag) == flag);
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}
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private void WriteBson(BsonWriter writer, Regex regex)
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{
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// Regular expression - The first cstring is the regex pattern, the second
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// is the regex options string. Options are identified by characters, which
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// must be stored in alphabetical order. Valid options are 'i' for case
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// insensitive matching, 'm' for multiline matching, 'x' for verbose mode,
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// 'l' to make \w, \W, etc. locale dependent, 's' for dotall mode
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// ('.' matches everything), and 'u' to make \w, \W, etc. match unicode.
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string options = null;
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if (HasFlag(regex.Options, RegexOptions.IgnoreCase))
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{
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options += "i";
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}
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if (HasFlag(regex.Options, RegexOptions.Multiline))
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{
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options += "m";
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}
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if (HasFlag(regex.Options, RegexOptions.Singleline))
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{
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options += "s";
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}
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options += "u";
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if (HasFlag(regex.Options, RegexOptions.ExplicitCapture))
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{
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options += "x";
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}
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writer.WriteRegex(regex.ToString(), options);
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}
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private void WriteJson(JsonWriter writer, Regex regex, JsonSerializer serializer)
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{
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DefaultContractResolver resolver = serializer.ContractResolver as DefaultContractResolver;
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writer.WriteStartObject();
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writer.WritePropertyName((resolver != null) ? resolver.GetResolvedPropertyName(PatternName) : PatternName);
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writer.WriteValue(regex.ToString());
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writer.WritePropertyName((resolver != null) ? resolver.GetResolvedPropertyName(OptionsName) : OptionsName);
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serializer.Serialize(writer, regex.Options);
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writer.WriteEndObject();
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}
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/// <summary>
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/// Reads the JSON representation of the object.
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/// </summary>
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/// <param name="reader">The <see cref="JsonReader"/> to read from.</param>
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/// <param name="objectType">Type of the object.</param>
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/// <param name="existingValue">The existing value of object being read.</param>
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/// <param name="serializer">The calling serializer.</param>
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/// <returns>The object value.</returns>
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public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
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{
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if (reader.TokenType == JsonToken.StartObject)
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{
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return ReadRegexObject(reader, serializer);
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}
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if (reader.TokenType == JsonToken.String)
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{
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return ReadRegexString(reader);
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}
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throw JsonSerializationException.Create(reader, "Unexpected token when reading Regex.");
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}
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private object ReadRegexString(JsonReader reader)
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{
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string regexText = (string)reader.Value;
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int patternOptionDelimiterIndex = regexText.LastIndexOf('/');
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string patternText = regexText.Substring(1, patternOptionDelimiterIndex - 1);
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string optionsText = regexText.Substring(patternOptionDelimiterIndex + 1);
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RegexOptions options = RegexOptions.None;
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foreach (char c in optionsText)
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{
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switch (c)
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{
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case 'i':
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options |= RegexOptions.IgnoreCase;
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break;
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case 'm':
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options |= RegexOptions.Multiline;
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break;
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case 's':
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options |= RegexOptions.Singleline;
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break;
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case 'x':
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options |= RegexOptions.ExplicitCapture;
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break;
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}
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}
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return new Regex(patternText, options);
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}
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private Regex ReadRegexObject(JsonReader reader, JsonSerializer serializer)
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{
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string pattern = null;
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RegexOptions? options = null;
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while (reader.Read())
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{
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switch (reader.TokenType)
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{
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case JsonToken.PropertyName:
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string propertyName = reader.Value.ToString();
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if (!reader.Read())
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{
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throw JsonSerializationException.Create(reader, "Unexpected end when reading Regex.");
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}
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if (string.Equals(propertyName, PatternName, StringComparison.OrdinalIgnoreCase))
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{
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pattern = (string)reader.Value;
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}
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else if (string.Equals(propertyName, OptionsName, StringComparison.OrdinalIgnoreCase))
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{
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options = serializer.Deserialize<RegexOptions>(reader);
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}
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else
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{
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reader.Skip();
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}
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break;
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case JsonToken.Comment:
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break;
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case JsonToken.EndObject:
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if (pattern == null)
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{
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throw JsonSerializationException.Create(reader, "Error deserializing Regex. No pattern found.");
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}
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return new Regex(pattern, options ?? RegexOptions.None);
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}
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}
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throw JsonSerializationException.Create(reader, "Unexpected end when reading Regex.");
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}
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/// <summary>
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/// Determines whether this instance can convert the specified object type.
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/// </summary>
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/// <param name="objectType">Type of the object.</param>
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/// <returns>
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/// <c>true</c> if this instance can convert the specified object type; otherwise, <c>false</c>.
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/// </returns>
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public override bool CanConvert(Type objectType)
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{
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return (objectType == typeof(Regex));
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}
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}
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}
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