/// <summary>
/// Initializes a new instance of the <see cref="JsonMemberCasingAttribute"/> class.
/// </summary>
/// <param name="casing">The casing of members when serializing into JSON.</param>
public JsonMemberCasingAttribute(JsonMemberCasing casing)
{
_casing = casing;
}
private static string ToStringJson(object o, bool compact, int level)
{
if (o == null)
{
return("null");
}
else if (false.Equals(o))
{
return("false");
}
else if (true.Equals(o))
{
return("true");
}
else if (o is string || o is char || o is Enum)
{
return("\"" + JsonEscape(o.ToString()) + "\"");
}
else if (IsIDictionary(o))
{
return(IDictionaryToStringJson(ToIDictionary(o), compact, level));
}
Type oType = o.GetType();
if (oType.IsPrimitive || oType == typeof(decimal))
{
return(Convert.ToString(o, CultureInfo.InvariantCulture));
}
JsonMemberCasing memberCasing = JsonMemberCasing.CamelCase;
foreach (JsonMemberCasingAttribute attribute in oType.GetCustomAttributes <JsonMemberCasingAttribute>(true))
{
memberCasing = attribute.Casing;
}
StringBuilder sb = new StringBuilder();
if (!compact && level > 0)
{
sb.AppendLine();
}
sb.Append(Indent(compact, level) + "{");
++level;
bool firstItem = true;
PropertyInfo[] properties = oType.GetProperties(BindingFlags.Public | BindingFlags.Instance);
for (int i = 0; i < properties.Length; i++)
{
PropertyInfo item = properties[i];
if (item.GetIndexParameters().Length > 0)
{
continue;
}
object value = item.GetValue(o, null);
if (value == null || object.ReferenceEquals(value, o))
{
continue;
}
if ((value is bool && false.Equals(value)) ||
(value is decimal && decimal.Zero.Equals(value)) ||
object.Equals(value, value.GetType().GetDefault()))
{
if (item.IsDefined <JsonIgnoreDefaultAttribute>(true))
{
continue;
}
}
if (!firstItem)
{
sb.Append(",");
}
else
{
firstItem = false;
}
if (!compact)
{
sb.AppendLine();
}
string itemName = item.Name;
switch (memberCasing)
{
case JsonMemberCasing.LowerCase: itemName = itemName.ToLowerInvariant(); break;
case JsonMemberCasing.UpperCase: itemName = itemName.ToUpperInvariant(); break;
case JsonMemberCasing.CamelCase: itemName = itemName.ToCamelCaseInvariant(); break;
}
foreach (JsonMemberNameAttribute attribute in item.GetCustomAttributes <JsonMemberNameAttribute>(true))
{
if (attribute.IsOutputName)
{
itemName = attribute.JsonName ?? itemName;
}
}
sb.Append(Indent(compact, level) + "\"" + itemName + "\":");
if (!IsICollection(item.PropertyType) || IsIDictionary(item.PropertyType))
{
if (!compact)
{
sb.Append(" ");
}
string valueJson = ToStringJson(value, compact, level);
sb.Append(valueJson);
}
else
{
if (!compact)
{
sb.AppendLine();
}
sb.Append(Indent(compact, level) + "[");
if (!compact)
{
sb.AppendLine();
}
{
int j = 0;
ICollection valueCollection = ToICollection(value);
foreach (object valueItem in valueCollection)
{
sb.Append(Indent(compact, level + 1) + ToStringJson(valueItem, compact, level + 1));
if (++j < valueCollection.Count)
{
if (!compact)
{
sb.AppendLine(",");
}
else
{
sb.Append(",");
}
}
}
if (!compact && valueCollection.Count > 0)
{
sb.AppendLine();
}
}
sb.Append(Indent(compact, level) + "]");
}
}
--level;
if (!compact)
{
sb.AppendLine();
}
sb.Append(Indent(compact, level) + "}");
return(sb.ToString());
}
