public static bool IsValidHjson(this string hjson)
{
var result = false;
if (!string.IsNullOrEmpty(hjson))
{
hjson = hjson.Trim();
if ((hjson.StartsWith("{") && hjson.EndsWith("}")) || (hjson.StartsWith("[") && hjson.EndsWith("]")))
{
try
{
var obj = HjsonValue.Parse(hjson);
result = true;
}
catch (InvalidOperationException) { }
catch (ArgumentOutOfRangeException) { }
catch (ArgumentNullException) { }
catch (ArgumentException) { }
catch (Exception) { }
}
}
return(result);
}
string ReadKeyName()
{
// quotes for keys are optional in Hjson
// unless they include {}[],: or whitespace.
int c = PeekChar();
if (c == '"' || c == '\'')
{
return(ReadStringLiteral(null));
}
sb.Length = 0;
int space = -1;
for (; ;)
{
c = PeekChar();
if (c < 0)
{
throw ParseError("Name is not closed");
}
char ch = (char)c;
if (ch == ':')
{
if (sb.Length == 0)
{
throw ParseError("Found ':' but no key name (for an empty key name use quotes)");
}
else if (space >= 0 && space != sb.Length)
{
throw ParseError("Found whitespace in your key name (use quotes to include)");
}
return(sb.ToString());
}
else if (IsWhite(ch))
{
if (space < 0)
{
space = sb.Length;
}
ReadChar();
}
else if (HjsonValue.IsPunctuatorChar(ch))
{
throw ParseError("Found '" + ch + "' where a key name was expected (check your syntax or use quotes if the key name includes {}[],: or whitespace)");
}
else
{
ReadChar();
sb.Append(ch);
}
}
}
/// <summary>Saves as Hjson to a string.</summary>
public string ToString(HjsonOptions options)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
var sw = new StringWriter();
HjsonValue.Save(this, sw, options);
return(sw.ToString());
}
/// <summary>Saves the JSON to a TextWriter.</summary>
public void Save(TextWriter textWriter, Stringify format = Stringify.Plain)
{
if (textWriter == null)
{
throw new ArgumentNullException("textWriter");
}
if (format == Stringify.Hjson)
{
HjsonValue.Save(this, textWriter);
}
else
{
new JsonWriter(format == Stringify.Formatted).Save(this, textWriter, 0);
}
textWriter.Flush();
}
void WriteString(string value, TextWriter tw, int level, bool hasComment, string separator)
{
if (value == "")
{
tw.Write(separator + "\"\""); return;
}
char left = value[0], right = value[value.Length - 1];
char left1 = value.Length > 1 ? value[1] : '\0', left2 = value.Length > 2 ? value[2] : '\0';
bool doEscape = hasComment || value.Any(c => NeedsQuotes(c));
if (doEscape ||
BaseReader.IsWhite(left) || BaseReader.IsWhite(right) ||
left == '"' ||
left == '\'' ||
left == '#' ||
left == '/' && (left1 == '*' || left1 == '/') ||
HjsonValue.IsPunctuatorChar(left) ||
HjsonReader.TryParseNumericLiteral(value, true, out JsonValue dummy) ||
StartsWithKeyword(value))
{
// If the string contains no control characters, no quote characters, and no
// backslash characters, then we can safely slap some quotes around it.
// Otherwise we first check if the string can be expressed in multiline
// format or we must replace the offending characters with safe escape
// sequences.
if (!value.Any(c => NeedsEscape(c)))
{
tw.Write(separator + "\"" + value + "\"");
}
else if (!value.Any(c => NeedsEscapeML(c)) && !value.Contains("'''") && !value.All(c => BaseReader.IsWhite(c)))
{
WriteMLString(value, tw, level, separator);
}
else
{
tw.Write(separator + "\"" + JsonWriter.EscapeString(value) + "\"");
}
}
else
{
tw.Write(separator + value);
}
}
JsonValue ReadTfnns(int c)
{
if (HjsonValue.IsPunctuatorChar((char)c))
{
throw ParseError("Found a punctuator character '" + c + "' when expecting a quoteless string (check your syntax)");
}
sb.Length = 0;
for (; ;)
{
bool isEol = c < 0 || c == '\n';
if (isEol || c == ',' ||
c == '}' || c == ']' ||
c == '#' ||
c == '/' && (PeekChar(1) == '/' || PeekChar(1) == '*'))
{
if (sb.Length > 0)
{
char ch = sb[0];
switch (ch)
{
case 'f': if (sb.ToString().Trim() == "false")
{
return(false);
}
break;
case 'n': if (sb.ToString().Trim() == "null")
{
return(null);
}
break;
case 't': if (sb.ToString().Trim() == "true")
{
return(true);
}
break;
default:
if (ch == '-' || ch >= '0' && ch <= '9')
{
if (TryParseNumericLiteral(sb.ToString(), false, out JsonValue res))
{
return(res);
}
}
break;
}
}
if (isEol)
{
// remove any whitespace at the end (ignored in quoteless strings)
return(HjsonDsf.Parse(dsfProviders, sb.ToString().Trim()));
}
}
ReadChar();
if (c != '\r')
{
sb.Append((char)c);
}
c = PeekChar();
}
}