string MultilineString(string code)
{
var reader = new StringReader(code);
string line;
line = reader.ReadLine().Trim(Spaces);
if (line.Length < 1 || line[0] != ParenOpen)
{
throw new ArgumentException();
}
#region Scan options
string join = "\n";
bool ltrim = false, rtrim = true, stripComments = true, percentResolve = true, literalEscape = false;
if (line.Length > 2)
{
if (line.Contains("%"))
{
percentResolve = false;
line = line.Replace("%", string.Empty);
}
if (line.Contains("`"))
{
literalEscape = true;
line = line.Replace("`", string.Empty);
}
if (line.Contains(","))
{
line = line.Replace(",", string.Empty);
}
string[] options = line.Substring(1).Trim().Split(Spaces, StringSplitOptions.RemoveEmptyEntries);
foreach (var option in options)
{
switch (option.ToUpperInvariant())
{
case "LTRIM":
ltrim = true;
break;
case "RTRIM":
break;
case "RTRIM0":
rtrim = false;
break;
case "COMMENTS":
case "COMMENT":
case "COM":
case "C":
stripComments = false;
break;
case "JOIN":
join = string.Empty;
break;
default:
const string joinOpt = "join";
if (option.Length > joinOpt.Length && option.Substring(0, joinOpt.Length).Equals(joinOpt, StringComparison.OrdinalIgnoreCase))
{
join = option.Substring(joinOpt.Length).Replace("`s", " ");
}
else
{
throw new ParseException(ExMultiStr);
}
break;
}
}
}
#endregion
#region String
var str = new StringBuilder(code.Length);
string resolve = Resolve.ToString();
string escape = Escape.ToString();
string cast = Multicast.ToString();
string resolveEscaped = string.Concat(escape, resolve);
var escapeEscaped = new string(Escape, 2);
string castEscaped = string.Concat(escape, cast);
while ((line = reader.ReadLine()) != null)
{
string check = line.Trim();
if (check.Length > 0 && check[0] == ParenClose)
{
break;
}
if (ltrim && rtrim)
{
line = line.Trim(Spaces);
}
else if (ltrim)
{
line = line.TrimStart(Spaces);
}
else if (rtrim)
{
line = line.TrimEnd(Spaces);
}
if (stripComments)
{
line = StripComment(line);
}
if (!percentResolve)
{
line = line.Replace(resolve, resolveEscaped);
}
if (literalEscape)
{
line = line.Replace(escape, escapeEscaped);
}
line = line.Replace(cast, castEscaped);
str.Append(line);
str.Append(join);
}
if (str.Length == 0)
{
return(string.Empty);
}
str.Remove(str.Length - join.Length, join.Length);
#endregion
return(str.ToString());
}
