using Newtonsoft.Json; using System; using System.Collections; using System.Collections.Generic; using System.Linq; using System.Reflection; using System.Runtime.Serialization; namespace NJsonSchema { public static class JsonPathUtilities { public static string GetJsonPath(object obj, object objectToSearch) { string jsonPath = GetJsonPath(obj, objectToSearch, "#", new List<object>()); if (jsonPath == null) throw new InvalidOperationException("Could not resolve the path."); return jsonPath; } public static JsonSchema4 GetObjectFromJsonPath(object obj, string path) { if (path == "#") { if (obj is JsonSchema4) return (JsonSchema4)obj; throw new InvalidOperationException("Could not resolve the path."); } if (path.StartsWith("#/")) { JsonSchema4 objectFromJsonPath = GetObjectFromJsonPath(obj, path.Split(new char[1] { '/' }).Skip(1).ToList(), new List<object>()); if (objectFromJsonPath == null) throw new InvalidOperationException("Could not resolve the path '" + path + "'."); return objectFromJsonPath; } if (path.StartsWith("http://") || path.StartsWith("https://")) throw new NotSupportedException("Could not resolve the path '" + path + "' because JSON web references are not supported."); throw new NotSupportedException("Could not resolve the path '" + path + "' because JSON file references are not supported."); } public static string GetPropertyName(PropertyInfo property) { JsonPropertyAttribute customAttribute = property.GetCustomAttribute<JsonPropertyAttribute>(); if (customAttribute != null && !string.IsNullOrEmpty(customAttribute.PropertyName)) return customAttribute.PropertyName; if (property.DeclaringType.GetTypeInfo().GetCustomAttribute<DataContractAttribute>() != null) { DataMemberAttribute customAttribute2 = property.GetCustomAttribute<DataMemberAttribute>(); if (customAttribute2 != null && !string.IsNullOrEmpty(customAttribute2.Name)) return customAttribute2.Name; } return property.Name; } private static string GetJsonPath(object obj, object objectToSearch, string basePath, List<object> checkedObjects) { if (obj == null || obj is string || checkedObjects.Contains(obj)) return null; if (obj == objectToSearch) return basePath; checkedObjects.Add(obj); if (obj is IDictionary) { foreach (object key in ((IDictionary)obj).Keys) { string jsonPath = GetJsonPath(((IDictionary)obj)[key], objectToSearch, basePath + "/" + key, checkedObjects); if (jsonPath != null) return jsonPath; } } else if (obj is IEnumerable) { int num = 0; foreach (object item in (IEnumerable)obj) { string jsonPath2 = GetJsonPath(item, objectToSearch, basePath + "/" + num, checkedObjects); if (jsonPath2 != null) return jsonPath2; num++; } } else { foreach (PropertyInfo item2 in from p in obj.GetType().GetRuntimeProperties() where p.GetCustomAttribute<JsonIgnoreAttribute>() == null select p) { string propertyName = GetPropertyName(item2); object value = item2.GetValue(obj); if (value != null) { string jsonPath3 = GetJsonPath(value, objectToSearch, basePath + "/" + propertyName, checkedObjects); if (jsonPath3 != null) return jsonPath3; } } } return null; } private static JsonSchema4 GetObjectFromJsonPath(object obj, List<string> segments, List<object> checkedObjects) { if (obj == null || obj is string || checkedObjects.Contains(obj)) return null; if (segments.Count == 0) return (JsonSchema4)obj; checkedObjects.Add(obj); if (obj is IDictionary) { if (((IDictionary)obj).Contains(segments.First())) return GetObjectFromJsonPath(((IDictionary)obj)[segments.First()], segments.Skip(1).ToList(), checkedObjects); } else if (obj is IEnumerable) { if (int.TryParse(segments.First(), out int result)) { object[] array = ((IEnumerable)obj).Cast<object>().ToArray(); if (array.Length > result) return GetObjectFromJsonPath(array[result], segments.Skip(1).ToList(), checkedObjects); } } else { foreach (PropertyInfo item in from p in obj.GetType().GetRuntimeProperties() where p.GetCustomAttribute<JsonIgnoreAttribute>() == null select p) { string propertyName = GetPropertyName(item); object value = item.GetValue(obj); if (propertyName == segments.First()) return GetObjectFromJsonPath(value, segments.Skip(1).ToList(), checkedObjects); } } return null; } } }