//#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 * * 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 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 Childs { get { yield break;} } public IEnumerable DeepChilds { get { foreach (var C in Childs) foreach (var D in C.DeepChilds) yield return D; } } public override string ToString() { return "JSONNode"; } public virtual string ToString(string aPrefix) { return "JSONNode"; } #endregion common interface #region typecasting properties public virtual int AsInt { get { int v = 0; if (int.TryParse(Value,out v)) return v; return 0; } set { Value = value.ToString(); } } public virtual float AsFloat { get { float v = 0.0f; if (float.TryParse(Value,out v)) return v; return 0.0f; } set { Value = value.ToString(); } } public virtual double AsDouble { get { double v = 0.0; if (double.TryParse(Value,out v)) return v; return 0.0; } set { Value = value.ToString(); } } 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"; } } 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; } public static JSONNode Parse(string aJSON) { Stack stack = new Stack(); JSONNode ctx = null; int i = 0; string Token = ""; string TokenName = ""; bool QuoteMode = 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); } TokenName = ""; Token = ""; if (stack.Count>0) ctx = stack.Peek(); break; case ':': if (QuoteMode) { Token += aJSON[i]; break; } TokenName = Token; Token = ""; break; case '"': QuoteMode ^= true; break; case ',': if (QuoteMode) { Token += aJSON[i]; break; } if (Token != "") { if (ctx is JSONArray) ctx.Add(Token); else if (TokenName != "") ctx.Add(TokenName, Token); } TokenName = ""; Token = ""; 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_SharpZipLib public 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_FileIO System.IO.Directory.CreateDirectory((new System.IO.FileInfo(aFileName)).Directory.FullName); using(var F = System.IO.File.OpenWrite(aFileName)) { SaveToCompressedStream(F); } #else throw 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()); } } #else public 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_FileIO System.IO.Directory.CreateDirectory((new System.IO.FileInfo(aFileName)).Directory.FullName); using(var F = System.IO.File.OpenWrite(aFileName)) { SaveToStream(F); } #else throw 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_SharpZipLib public 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_FileIO using(var F = System.IO.File.OpenRead(aFileName)) { return LoadFromCompressedStream(F); } #else throw 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); } #else public 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_FileIO using(var F = System.IO.File.OpenRead(aFileName)) { return LoadFromStream(F); } #else throw 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 m_List = new List(); 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); else m_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 Childs { 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 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 m_Dict = new Dictionary(); public override JSONNode this[string aKey] { get { if (m_Dict.ContainsKey(aKey)) return m_Dict[aKey]; else return new JSONLazyCreator(this, aKey); } set { if (m_Dict.ContainsKey(aKey)) m_Dict[aKey] = value; else m_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; else m_Dict.Add(aKey, aItem); } else m_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 Childs { get { foreach(KeyValuePair N in m_Dict) yield return N.Value; } } public IEnumerator GetEnumerator() { foreach(KeyValuePair N in m_Dict) yield return N; } public override string ToString() { string result = "{"; foreach (KeyValuePair 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 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 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; } } public JSONData(string aData) { m_Data = aData; } 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 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 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); } } }