Unity3d简单json库中SimpleJSON.cs源码

//#define USE_SharpZipLib#if !UNITY_WEBPLAYER#define USE_FileIO#endif/* * * * * * A simple JSON Parser / builder * ------------------------------ *  * It mainly has been written as a simple JSON parser. It can build a JSON string * from the node-tree, or generate a node tree from any valid JSON string. *  * If you want to use compression when saving to file / stream / B64 you have to include * SharpZipLib ( http://www.icsharpcode.net/opensource/sharpziplib/ ) in your project and * define "USE_SharpZipLib" at the top of the file *  * Written by Bunny83  * 2012-06-09 *  * Modified by oPless, 2014-09-21 to round-trip properly * * Features / attributes: * - provides strongly typed node classes and lists / dictionaries * - provides easy access to class members / array items / data values * - the parser ignores data types. Each value is a string. * - only double quotes (") are used for quoting strings. * - values and names are not restricted to quoted strings. They simply add up and are trimmed. * - There are only 3 types: arrays(JSONArray), objects(JSONClass) and values(JSONData) * - provides "casting" properties to easily convert to / from those types: *   int / float / double / bool * - provides a common interface for each node so no explicit casting is required. * - the parser try to avoid errors, but if malformed JSON is parsed the result is undefined *  *  * 2012-12-17 Update: * - Added internal JSONLazyCreator class which simplifies the construction of a JSON tree *   Now you can simple reference any item that doesn't exist yet and it will return a JSONLazyCreator *   The class determines the required type by it's further use, creates the type and removes itself. * - Added binary serialization / deserialization. * - Added support for BZip2 zipped binary format. Requires the SharpZipLib ( http://www.icsharpcode.net/opensource/sharpziplib/ ) *   The usage of the SharpZipLib library can be disabled by removing or commenting out the USE_SharpZipLib define at the top * - The serializer uses different types when it comes to store the values. Since my data values *   are all of type string, the serializer will "try" which format fits best. The order is: int, float, double, bool, string. *   It's not the most efficient way but for a moderate amount of data it should work on all platforms. *  * * * * */using System;using System.Collections;using System.Collections.Generic;using System.Linq;  namespace SimpleJSON{public enum JSONBinaryTag{Array = 1,Class = 2,Value = 3,IntValue = 4,DoubleValue = 5,BoolValue = 6,FloatValue = 7,} public abstract class JSONNode{#region common interface public virtual void Add (string aKey, JSONNode aItem){} public virtual JSONNode this [int aIndex]   { get { return null; } set { } } public virtual JSONNode this [string aKey]  { get { return null; } set { } } public virtual string Value                { get { return ""; } set { } } public virtual int Count                   { get { return 0; } } public virtual void Add (JSONNode aItem){Add ("", aItem);} public virtual JSONNode Remove (string aKey){return null;} public virtual JSONNode Remove (int aIndex){return null;} public virtual JSONNode Remove (JSONNode aNode){return aNode;} public virtual IEnumerable<JSONNode> Children{get {yield break;}} public IEnumerable<JSONNode> DeepChildren{get {foreach (var C in Children)foreach (var D in C.DeepChildren)yield return D;}} public override string ToString (){return "JSONNode";} public virtual string ToString (string aPrefix){return "JSONNode";} public abstract string ToJSON (int prefix); #endregion common interface #region typecasting properties public virtual JSONBinaryTag Tag { get; set; } public virtual int AsInt{get {int v = 0;if (int.TryParse (Value, out v))return v;return 0;}set {Value = value.ToString ();Tag = JSONBinaryTag.IntValue;}} public virtual float AsFloat{get {float v = 0.0f;if (float.TryParse (Value, out v))return v;return 0.0f;}set {Value = value.ToString ();Tag = JSONBinaryTag.FloatValue;}} public virtual double AsDouble{get {double v = 0.0;if (double.TryParse (Value, out v))return v;return 0.0;}set {Value = value.ToString ();Tag = JSONBinaryTag.DoubleValue; }} public virtual bool AsBool{get {bool v = false;if (bool.TryParse (Value, out v))return v;return !string.IsNullOrEmpty (Value);}set {Value = (value) ? "true" : "false";Tag = JSONBinaryTag.BoolValue; }} public virtual JSONArray AsArray{get {return this as JSONArray;}} public virtual JSONClass AsObject{get {return this as JSONClass;}}  #endregion typecasting properties #region operators public static implicit operator JSONNode (string s){return new JSONData (s);} public static implicit operator string (JSONNode d){return (d == null) ? null : d.Value;} public static bool operator == (JSONNode a, object b){if (b == null && a is JSONLazyCreator)return true;return System.Object.ReferenceEquals (a, b);} public static bool operator != (JSONNode a, object b){return !(a == b);} public override bool Equals (object obj){return System.Object.ReferenceEquals (this, obj);} public override int GetHashCode (){return base.GetHashCode ();}  #endregion operators internal static string Escape (string aText){string result = "";foreach (char c in aText) {switch (c) {case '\\':result += "\\\\";break;case '\"':result += "\\\"";break;case '\n':result += "\\n";break;case '\r':result += "\\r";break;case '\t':result += "\\t";break;case '\b':result += "\\b";break;case '\f':result += "\\f";break;default   :result += c;break;}}return result;} static JSONData Numberize (string token){bool flag = false;int integer = 0;double real = 0; if (int.TryParse (token, out integer)) {return new JSONData (integer);} if (double.TryParse (token, out real)) {return new JSONData (real);} if (bool.TryParse (token, out flag)) {return new JSONData (flag);} throw new NotImplementedException (token);} static void AddElement (JSONNode ctx, string token, string tokenName, bool tokenIsString){if (tokenIsString) {if (ctx is JSONArray)ctx.Add (token);elsectx.Add (tokenName, token); // assume dictionary/object} else {JSONData number = Numberize (token);if (ctx is JSONArray)ctx.Add (number);elsectx.Add (tokenName, number); }} public static JSONNode Parse (string aJSON){Stack<JSONNode> stack = new Stack<JSONNode> ();JSONNode ctx = null;int i = 0;string Token = "";string TokenName = "";bool QuoteMode = false;bool TokenIsString = false;while (i < aJSON.Length) {switch (aJSON [i]) {case '{':if (QuoteMode) {Token += aJSON [i];break;}stack.Push (new JSONClass ());if (ctx != null) {TokenName = TokenName.Trim ();if (ctx is JSONArray)ctx.Add (stack.Peek ());else if (TokenName != "")ctx.Add (TokenName, stack.Peek ());}TokenName = "";Token = "";ctx = stack.Peek ();break; case '[':if (QuoteMode) {Token += aJSON [i];break;} stack.Push (new JSONArray ());if (ctx != null) {TokenName = TokenName.Trim (); if (ctx is JSONArray)ctx.Add (stack.Peek ());else if (TokenName != "")ctx.Add (TokenName, stack.Peek ());}TokenName = "";Token = "";ctx = stack.Peek ();break; case '}':case ']':if (QuoteMode) {Token += aJSON [i];break;}if (stack.Count == 0)throw new Exception ("JSON Parse: Too many closing brackets"); stack.Pop ();if (Token != "") {TokenName = TokenName.Trim ();/*if (ctx is JSONArray)ctx.Add (Token);else if (TokenName != "")ctx.Add (TokenName, Token);*/AddElement (ctx, Token, TokenName, TokenIsString);TokenIsString = false;}TokenName = "";Token = "";if (stack.Count > 0)ctx = stack.Peek ();break; case ':':if (QuoteMode) {Token += aJSON [i];break;}TokenName = Token;Token = "";TokenIsString = false;break; case '"':QuoteMode ^= true;TokenIsString = QuoteMode == true ? true : TokenIsString;break; case ',':if (QuoteMode) {Token += aJSON [i];break;}if (Token != "") {/*if (ctx is JSONArray) {ctx.Add (Token);} else if (TokenName != "") {ctx.Add (TokenName, Token);}*/AddElement (ctx, Token, TokenName, TokenIsString);TokenIsString = false; }TokenName = "";Token = "";TokenIsString = false;break; case '\r':case '\n':break; case ' ':case '\t':if (QuoteMode)Token += aJSON [i];break; case '\\':++i;if (QuoteMode) {char C = aJSON [i];switch (C) {case 't':Token += '\t';break;case 'r':Token += '\r';break;case 'n':Token += '\n';break;case 'b':Token += '\b';break;case 'f':Token += '\f';break;case 'u':{string s = aJSON.Substring (i + 1, 4);Token += (char)int.Parse (s,System.Globalization.NumberStyles.AllowHexSpecifier);i += 4;break;}default  :Token += C;break;}}break; default:Token += aJSON [i];break;}++i;}if (QuoteMode) {throw new Exception ("JSON Parse: Quotation marks seems to be messed up.");}return ctx;} public virtual void Serialize (System.IO.BinaryWriter aWriter){} public void SaveToStream (System.IO.Stream aData){var W = new System.IO.BinaryWriter (aData);Serialize (W);} #if USE_SharpZipLibpublic void SaveToCompressedStream(System.IO.Stream aData){using (var gzipOut = new ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream(aData)){gzipOut.IsStreamOwner = false;SaveToStream(gzipOut);gzipOut.Close();}} public void SaveToCompressedFile(string aFileName){ #if USE_FileIOSystem.IO.Directory.CreateDirectory((new System.IO.FileInfo(aFileName)).Directory.FullName);using(var F = System.IO.File.OpenWrite(aFileName)){SaveToCompressedStream(F);} #elsethrow new Exception("Can't use File IO stuff in webplayer");#endif}public string SaveToCompressedBase64(){using (var stream = new System.IO.MemoryStream()){SaveToCompressedStream(stream);stream.Position = 0;return System.Convert.ToBase64String(stream.ToArray());}} #elsepublic void SaveToCompressedStream (System.IO.Stream aData){throw new Exception ("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");} public void SaveToCompressedFile (string aFileName){throw new Exception ("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");} public string SaveToCompressedBase64 (){throw new Exception ("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");}#endif public void SaveToFile (string aFileName){#if USE_FileIOSystem.IO.Directory.CreateDirectory ((new System.IO.FileInfo (aFileName)).Directory.FullName);using (var F = System.IO.File.OpenWrite (aFileName)) {SaveToStream (F);}#elsethrow new Exception ("Can't use File IO stuff in webplayer");#endif} public string SaveToBase64 (){using (var stream = new System.IO.MemoryStream ()) {SaveToStream (stream);stream.Position = 0;return System.Convert.ToBase64String (stream.ToArray ());}} public static JSONNode Deserialize (System.IO.BinaryReader aReader){JSONBinaryTag type = (JSONBinaryTag)aReader.ReadByte ();switch (type) {case JSONBinaryTag.Array:{int count = aReader.ReadInt32 ();JSONArray tmp = new JSONArray ();for (int i = 0; i < count; i++)tmp.Add (Deserialize (aReader));return tmp;}case JSONBinaryTag.Class:{int count = aReader.ReadInt32 ();                JSONClass tmp = new JSONClass ();for (int i = 0; i < count; i++) {string key = aReader.ReadString ();var val = Deserialize (aReader);tmp.Add (key, val);}return tmp;}case JSONBinaryTag.Value:{return new JSONData (aReader.ReadString ());}case JSONBinaryTag.IntValue:{return new JSONData (aReader.ReadInt32 ());}case JSONBinaryTag.DoubleValue:{return new JSONData (aReader.ReadDouble ());}case JSONBinaryTag.BoolValue:{return new JSONData (aReader.ReadBoolean ());}case JSONBinaryTag.FloatValue:{return new JSONData (aReader.ReadSingle ());} default:{throw new Exception ("Error deserializing JSON. Unknown tag: " + type);}}} #if USE_SharpZipLibpublic static JSONNode LoadFromCompressedStream(System.IO.Stream aData){var zin = new ICSharpCode.SharpZipLib.BZip2.BZip2InputStream(aData);return LoadFromStream(zin);}public static JSONNode LoadFromCompressedFile(string aFileName){#if USE_FileIOusing(var F = System.IO.File.OpenRead(aFileName)){return LoadFromCompressedStream(F);}#elsethrow new Exception("Can't use File IO stuff in webplayer");#endif}public static JSONNode LoadFromCompressedBase64(string aBase64){var tmp = System.Convert.FromBase64String(aBase64);var stream = new System.IO.MemoryStream(tmp);stream.Position = 0;return LoadFromCompressedStream(stream);}#elsepublic static JSONNode LoadFromCompressedFile (string aFileName){throw new Exception ("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");} public static JSONNode LoadFromCompressedStream (System.IO.Stream aData){throw new Exception ("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");} public static JSONNode LoadFromCompressedBase64 (string aBase64){throw new Exception ("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");}#endif public static JSONNode LoadFromStream (System.IO.Stream aData){using (var R = new System.IO.BinaryReader (aData)) {return Deserialize (R);}} public static JSONNode LoadFromFile (string aFileName){#if USE_FileIOusing (var F = System.IO.File.OpenRead (aFileName)) {return LoadFromStream (F);}#elsethrow new Exception ("Can't use File IO stuff in webplayer");#endif} public static JSONNode LoadFromBase64 (string aBase64){var tmp = System.Convert.FromBase64String (aBase64);var stream = new System.IO.MemoryStream (tmp);stream.Position = 0;return LoadFromStream (stream);}}// End of JSONNode public class JSONArray : JSONNode, IEnumerable{private List<JSONNode> m_List = new List<JSONNode> (); public override JSONNode this [int aIndex]{get {if (aIndex < 0 || aIndex >= m_List.Count)return new JSONLazyCreator (this);return m_List [aIndex];}set {if (aIndex < 0 || aIndex >= m_List.Count)m_List.Add (value);elsem_List [aIndex] = value;}} public override JSONNode this [string aKey]{get{ return new JSONLazyCreator (this); }set{ m_List.Add (value); }} public override int Count{get { return m_List.Count; }} public override void Add (string aKey, JSONNode aItem){m_List.Add (aItem);} public override JSONNode Remove (int aIndex){if (aIndex < 0 || aIndex >= m_List.Count)return null;JSONNode tmp = m_List [aIndex];m_List.RemoveAt (aIndex);return tmp;} public override JSONNode Remove (JSONNode aNode){m_List.Remove (aNode);return aNode;} public override IEnumerable<JSONNode> Children{get {foreach (JSONNode N in m_List)yield return N;}} public IEnumerator GetEnumerator (){foreach (JSONNode N in m_List)yield return N;} public override string ToString (){string result = "[ ";foreach (JSONNode N in m_List) {if (result.Length > 2)result += ", ";result += N.ToString ();}result += " ]";return result;} public override string ToString (string aPrefix){string result = "[ ";foreach (JSONNode N in m_List) {if (result.Length > 3)result += ", ";result += "\n" + aPrefix + "   ";                result += N.ToString (aPrefix + "   ");}result += "\n" + aPrefix + "]";return result;} public override string ToJSON (int prefix){string s = new string (' ', (prefix + 1) * 2);string ret = "[ ";foreach (JSONNode n in m_List) {if (ret.Length > 3)ret += ", ";ret += "\n" + s;ret += n.ToJSON (prefix + 1); }ret += "\n" + s + "]";return ret;} public override void Serialize (System.IO.BinaryWriter aWriter){aWriter.Write ((byte)JSONBinaryTag.Array);aWriter.Write (m_List.Count);for (int i = 0; i < m_List.Count; i++) {m_List [i].Serialize (aWriter);}}}// End of JSONArray public class JSONClass : JSONNode, IEnumerable{private Dictionary<string,JSONNode> m_Dict = new Dictionary<string,JSONNode> (); public override JSONNode this [string aKey]{get {if (m_Dict.ContainsKey (aKey))return m_Dict [aKey];elsereturn new JSONLazyCreator (this, aKey);}set {if (m_Dict.ContainsKey (aKey))m_Dict [aKey] = value;elsem_Dict.Add (aKey, value);}} public override JSONNode this [int aIndex]{get {if (aIndex < 0 || aIndex >= m_Dict.Count)return null;return m_Dict.ElementAt (aIndex).Value;}set {if (aIndex < 0 || aIndex >= m_Dict.Count)return;string key = m_Dict.ElementAt (aIndex).Key;m_Dict [key] = value;}} public override int Count{get { return m_Dict.Count; }}  public override void Add (string aKey, JSONNode aItem){if (!string.IsNullOrEmpty (aKey)) {if (m_Dict.ContainsKey (aKey))m_Dict [aKey] = aItem;elsem_Dict.Add (aKey, aItem);} elsem_Dict.Add (Guid.NewGuid ().ToString (), aItem);} public override JSONNode Remove (string aKey){if (!m_Dict.ContainsKey (aKey))return null;JSONNode tmp = m_Dict [aKey];m_Dict.Remove (aKey);return tmp;        } public override JSONNode Remove (int aIndex){if (aIndex < 0 || aIndex >= m_Dict.Count)return null;var item = m_Dict.ElementAt (aIndex);m_Dict.Remove (item.Key);return item.Value;} public override JSONNode Remove (JSONNode aNode){try {var item = m_Dict.Where (k => k.Value == aNode).First ();m_Dict.Remove (item.Key);return aNode;} catch {return null;}} public override IEnumerable<JSONNode> Children{get {foreach (KeyValuePair<string,JSONNode> N in m_Dict)yield return N.Value;}} public IEnumerator GetEnumerator (){foreach (KeyValuePair<string, JSONNode> N in m_Dict)yield return N;} public override string ToString (){string result = "{";foreach (KeyValuePair<string, JSONNode> N in m_Dict) {if (result.Length > 2)result += ", ";result += "\"" + Escape (N.Key) + "\":" + N.Value.ToString ();}result += "}";return result;} public override string ToString (string aPrefix){string result = "{ ";foreach (KeyValuePair<string, JSONNode> N in m_Dict) {if (result.Length > 3)result += ", ";result += "\n" + aPrefix + "   ";result += "\"" + Escape (N.Key) + "\" : " + N.Value.ToString (aPrefix + "   ");}result += "\n" + aPrefix + "}";return result;} public override string ToJSON (int prefix){string s = new string (' ', (prefix + 1) * 2);string ret = "{ ";foreach (KeyValuePair<string,JSONNode> n in m_Dict) {if (ret.Length > 3)ret += ", ";ret += "\n" + s;ret += string.Format ("\"{0}\": {1}", n.Key, n.Value.ToJSON (prefix + 1));}ret += "\n" + s + "}";return ret;} public override void Serialize (System.IO.BinaryWriter aWriter){aWriter.Write ((byte)JSONBinaryTag.Class);aWriter.Write (m_Dict.Count);foreach (string K in m_Dict.Keys) {aWriter.Write (K);m_Dict [K].Serialize (aWriter);}}}// End of JSONClass public class JSONData : JSONNode{private string m_Data;  public override string Value{get { return m_Data; }set {m_Data = value;Tag = JSONBinaryTag.Value;}} public JSONData (string aData){m_Data = aData;Tag = JSONBinaryTag.Value;} public JSONData (float aData){AsFloat = aData;} public JSONData (double aData){AsDouble = aData;} public JSONData (bool aData){AsBool = aData;} public JSONData (int aData){AsInt = aData;} public override string ToString (){return "\"" + Escape (m_Data) + "\"";} public override string ToString (string aPrefix){return "\"" + Escape (m_Data) + "\"";} public override string ToJSON (int prefix){switch (Tag) {case JSONBinaryTag.DoubleValue:case JSONBinaryTag.FloatValue:case JSONBinaryTag.IntValue:return m_Data;case JSONBinaryTag.Value:return string.Format ("\"{0}\"", Escape (m_Data));default:throw new NotSupportedException ("This shouldn't be here: " + Tag.ToString ());}} public override void Serialize (System.IO.BinaryWriter aWriter){var tmp = new JSONData (""); tmp.AsInt = AsInt;if (tmp.m_Data == this.m_Data) {aWriter.Write ((byte)JSONBinaryTag.IntValue);aWriter.Write (AsInt);return;}tmp.AsFloat = AsFloat;if (tmp.m_Data == this.m_Data) {aWriter.Write ((byte)JSONBinaryTag.FloatValue);aWriter.Write (AsFloat);return;}tmp.AsDouble = AsDouble;if (tmp.m_Data == this.m_Data) {aWriter.Write ((byte)JSONBinaryTag.DoubleValue);aWriter.Write (AsDouble);return;} tmp.AsBool = AsBool;if (tmp.m_Data == this.m_Data) {aWriter.Write ((byte)JSONBinaryTag.BoolValue);aWriter.Write (AsBool);return;}aWriter.Write ((byte)JSONBinaryTag.Value);aWriter.Write (m_Data);}}// End of JSONData internal class JSONLazyCreator : JSONNode{private JSONNode m_Node = null;private string m_Key = null; public JSONLazyCreator (JSONNode aNode){m_Node = aNode;m_Key = null;} public JSONLazyCreator (JSONNode aNode, string aKey){m_Node = aNode;m_Key = aKey;} private void Set (JSONNode aVal){if (m_Key == null) {m_Node.Add (aVal);} else {m_Node.Add (m_Key, aVal);}m_Node = null; // Be GC friendly.} public override JSONNode this [int aIndex]{get {return new JSONLazyCreator (this);}set {var tmp = new JSONArray ();tmp.Add (value);Set (tmp);}} public override JSONNode this [string aKey]{get {return new JSONLazyCreator (this, aKey);}set {var tmp = new JSONClass ();tmp.Add (aKey, value);Set (tmp);}} public override void Add (JSONNode aItem){var tmp = new JSONArray ();tmp.Add (aItem);Set (tmp);} public override void Add (string aKey, JSONNode aItem){var tmp = new JSONClass ();tmp.Add (aKey, aItem);Set (tmp);} public static bool operator == (JSONLazyCreator a, object b){if (b == null)return true;return System.Object.ReferenceEquals (a, b);} public static bool operator != (JSONLazyCreator a, object b){return !(a == b);} public override bool Equals (object obj){if (obj == null)return true;return System.Object.ReferenceEquals (this, obj);} public override int GetHashCode (){return base.GetHashCode ();} public override string ToString (){return "";} public override string ToString (string aPrefix){return "";} public override string ToJSON (int prefix){return "";} public override int AsInt{get {JSONData tmp = new JSONData (0);Set (tmp);return 0;}set {JSONData tmp = new JSONData (value);Set (tmp);}} public override float AsFloat{get {JSONData tmp = new JSONData (0.0f);Set (tmp);return 0.0f;}set {JSONData tmp = new JSONData (value);Set (tmp);}} public override double AsDouble{get {JSONData tmp = new JSONData (0.0);Set (tmp);return 0.0;}set {JSONData tmp = new JSONData (value);Set (tmp);}} public override bool AsBool{get {JSONData tmp = new JSONData (false);Set (tmp);return false;}set {JSONData tmp = new JSONData (value);Set (tmp);}} public override JSONArray AsArray{get {JSONArray tmp = new JSONArray ();Set (tmp);return tmp;}} public override JSONClass AsObject{get {JSONClass tmp = new JSONClass ();Set (tmp);return tmp;}}}// End of JSONLazyCreator public static class JSON{public static JSONNode Parse (string aJSON){return JSONNode.Parse (aJSON);}}}