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Diffstat (limited to 'Assets/ThirdParty/LitJson/JsonWriter.cs')
| -rw-r--r-- | Assets/ThirdParty/LitJson/JsonWriter.cs | 484 |
1 files changed, 484 insertions, 0 deletions
diff --git a/Assets/ThirdParty/LitJson/JsonWriter.cs b/Assets/ThirdParty/LitJson/JsonWriter.cs new file mode 100644 index 00000000..4bfaaac8 --- /dev/null +++ b/Assets/ThirdParty/LitJson/JsonWriter.cs @@ -0,0 +1,484 @@ +#region Header +/** + * JsonWriter.cs + * Stream-like facility to output JSON text. + * + * The authors disclaim copyright to this source code. For more details, see + * the COPYING file included with this distribution. + **/ +#endregion + + +using System; +using System.Collections.Generic; +using System.Globalization; +using System.IO; +using System.Text; + + +namespace LitJson +{ + internal enum Condition + { + InArray, + InObject, + NotAProperty, + Property, + Value + } + + internal class WriterContext + { + public int Count; + public bool InArray; + public bool InObject; + public bool ExpectingValue; + public int Padding; + } + + public class JsonWriter + { + #region Fields + private static readonly NumberFormatInfo number_format; + + private WriterContext context; + private Stack<WriterContext> ctx_stack; + private bool has_reached_end; + private char[] hex_seq; + private int indentation; + private int indent_value; + private StringBuilder inst_string_builder; + private bool pretty_print; + private bool validate; + private bool lower_case_properties; + private TextWriter writer; + #endregion + + + #region Properties + public int IndentValue { + get { return indent_value; } + set { + indentation = (indentation / indent_value) * value; + indent_value = value; + } + } + + public bool PrettyPrint { + get { return pretty_print; } + set { pretty_print = value; } + } + + public TextWriter TextWriter { + get { return writer; } + } + + public bool Validate { + get { return validate; } + set { validate = value; } + } + + public bool LowerCaseProperties { + get { return lower_case_properties; } + set { lower_case_properties = value; } + } + #endregion + + + #region Constructors + static JsonWriter () + { + number_format = NumberFormatInfo.InvariantInfo; + } + + public JsonWriter () + { + inst_string_builder = new StringBuilder (); + writer = new StringWriter (inst_string_builder); + + Init (); + } + + public JsonWriter (StringBuilder sb) : + this (new StringWriter (sb)) + { + } + + public JsonWriter (TextWriter writer) + { + if (writer == null) + throw new ArgumentNullException ("writer"); + + this.writer = writer; + + Init (); + } + #endregion + + + #region Private Methods + private void DoValidation (Condition cond) + { + if (! context.ExpectingValue) + context.Count++; + + if (! validate) + return; + + if (has_reached_end) + throw new JsonException ( + "A complete JSON symbol has already been written"); + + switch (cond) { + case Condition.InArray: + if (! context.InArray) + throw new JsonException ( + "Can't close an array here"); + break; + + case Condition.InObject: + if (! context.InObject || context.ExpectingValue) + throw new JsonException ( + "Can't close an object here"); + break; + + case Condition.NotAProperty: + if (context.InObject && ! context.ExpectingValue) + throw new JsonException ( + "Expected a property"); + break; + + case Condition.Property: + if (! context.InObject || context.ExpectingValue) + throw new JsonException ( + "Can't add a property here"); + break; + + case Condition.Value: + if (! context.InArray && + (! context.InObject || ! context.ExpectingValue)) + throw new JsonException ( + "Can't add a value here"); + + break; + } + } + + private void Init () + { + has_reached_end = false; + hex_seq = new char[4]; + indentation = 0; + indent_value = 4; + pretty_print = false; + validate = true; + lower_case_properties = false; + + ctx_stack = new Stack<WriterContext> (); + context = new WriterContext (); + ctx_stack.Push (context); + } + + private static void IntToHex (int n, char[] hex) + { + int num; + + for (int i = 0; i < 4; i++) { + num = n % 16; + + if (num < 10) + hex[3 - i] = (char) ('0' + num); + else + hex[3 - i] = (char) ('A' + (num - 10)); + + n >>= 4; + } + } + + private void Indent () + { + if (pretty_print) + indentation += indent_value; + } + + + private void Put (string str) + { + if (pretty_print && ! context.ExpectingValue) + for (int i = 0; i < indentation; i++) + writer.Write (' '); + + writer.Write (str); + } + + private void PutNewline () + { + PutNewline (true); + } + + private void PutNewline (bool add_comma) + { + if (add_comma && ! context.ExpectingValue && + context.Count > 1) + writer.Write (','); + + if (pretty_print && ! context.ExpectingValue) + writer.Write (Environment.NewLine); + } + + private void PutString (string str) + { + Put (String.Empty); + + writer.Write ('"'); + + int n = str.Length; + for (int i = 0; i < n; i++) { + switch (str[i]) { + case '\n': + writer.Write ("\\n"); + continue; + + case '\r': + writer.Write ("\\r"); + continue; + + case '\t': + writer.Write ("\\t"); + continue; + + case '"': + case '\\': + writer.Write ('\\'); + writer.Write (str[i]); + continue; + + case '\f': + writer.Write ("\\f"); + continue; + + case '\b': + writer.Write ("\\b"); + continue; + } + + if ((int) str[i] >= 32 && (int) str[i] <= 126) { + writer.Write (str[i]); + continue; + } + + // Default, turn into a \uXXXX sequence + IntToHex ((int) str[i], hex_seq); + writer.Write ("\\u"); + writer.Write (hex_seq); + } + + writer.Write ('"'); + } + + private void Unindent () + { + if (pretty_print) + indentation -= indent_value; + } + #endregion + + + public override string ToString () + { + if (inst_string_builder == null) + return String.Empty; + + return inst_string_builder.ToString (); + } + + public void Reset () + { + has_reached_end = false; + + ctx_stack.Clear (); + context = new WriterContext (); + ctx_stack.Push (context); + + if (inst_string_builder != null) + inst_string_builder.Remove (0, inst_string_builder.Length); + } + + public void Write (bool boolean) + { + DoValidation (Condition.Value); + PutNewline (); + + Put (boolean ? "true" : "false"); + + context.ExpectingValue = false; + } + + public void Write (decimal number) + { + DoValidation (Condition.Value); + PutNewline (); + + Put (Convert.ToString (number, number_format)); + + context.ExpectingValue = false; + } + + public void Write (double number) + { + DoValidation (Condition.Value); + PutNewline (); + + string str = Convert.ToString (number, number_format); + Put (str); + + if (str.IndexOf ('.') == -1 && + str.IndexOf ('E') == -1) + writer.Write (".0"); + + context.ExpectingValue = false; + } + + public void Write(float number) + { + DoValidation(Condition.Value); + PutNewline(); + + string str = Convert.ToString(number, number_format); + Put(str); + + context.ExpectingValue = false; + } + + public void Write (int number) + { + DoValidation (Condition.Value); + PutNewline (); + + Put (Convert.ToString (number, number_format)); + + context.ExpectingValue = false; + } + + public void Write (long number) + { + DoValidation (Condition.Value); + PutNewline (); + + Put (Convert.ToString (number, number_format)); + + context.ExpectingValue = false; + } + + public void Write (string str) + { + DoValidation (Condition.Value); + PutNewline (); + + if (str == null) + Put ("null"); + else + PutString (str); + + context.ExpectingValue = false; + } + + [CLSCompliant(false)] + public void Write (ulong number) + { + DoValidation (Condition.Value); + PutNewline (); + + Put (Convert.ToString (number, number_format)); + + context.ExpectingValue = false; + } + + public void WriteArrayEnd () + { + DoValidation (Condition.InArray); + PutNewline (false); + + ctx_stack.Pop (); + if (ctx_stack.Count == 1) + has_reached_end = true; + else { + context = ctx_stack.Peek (); + context.ExpectingValue = false; + } + + Unindent (); + Put ("]"); + } + + public void WriteArrayStart () + { + DoValidation (Condition.NotAProperty); + PutNewline (); + + Put ("["); + + context = new WriterContext (); + context.InArray = true; + ctx_stack.Push (context); + + Indent (); + } + + public void WriteObjectEnd () + { + DoValidation (Condition.InObject); + PutNewline (false); + + ctx_stack.Pop (); + if (ctx_stack.Count == 1) + has_reached_end = true; + else { + context = ctx_stack.Peek (); + context.ExpectingValue = false; + } + + Unindent (); + Put ("}"); + } + + public void WriteObjectStart () + { + DoValidation (Condition.NotAProperty); + PutNewline (); + + Put ("{"); + + context = new WriterContext (); + context.InObject = true; + ctx_stack.Push (context); + + Indent (); + } + + public void WritePropertyName (string property_name) + { + DoValidation (Condition.Property); + PutNewline (); + string propertyName = (property_name == null || !lower_case_properties) + ? property_name + : property_name.ToLowerInvariant(); + + PutString (propertyName); + + if (pretty_print) { + if (propertyName.Length > context.Padding) + context.Padding = propertyName.Length; + + for (int i = context.Padding - propertyName.Length; + i >= 0; i--) + writer.Write (' '); + + writer.Write (": "); + } else + writer.Write (':'); + + context.ExpectingValue = true; + } + } +} |