public static bool TryParse(string value, out PDFFontSource parsed)
{
parsed = null;
if (null == value)
{
return(false);
}
if (value.IndexOf(',') > 0)
{
var all = value.Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
PDFFontSource curr = null;
PDFFontSource next;
foreach (var one in all)
{
if (TryParseOneValue(one, out next))
{
if (null == parsed)
{
parsed = next;
}
if (null != curr)
{
curr.Next = next;
}
curr = next;
}
}
return(parsed != null);
}
else
{
return(TryParseOneValue(value, out parsed));
}
}
public static bool TryParseOneValue(string value, out PDFFontSource parsed)
{
parsed = null;
if (null == value)
{
return(false);
}
// Initially get teh url or local options
var open = value.IndexOf("(");
if (open <= 0)
{
return(false);
}
var close = value.IndexOf(')', open);
if (close <= open)
{
return(false);
}
var typeS = value.Substring(0, open);
FontSourceType type;
if (!Enum.TryParse <FontSourceType>(typeS, true, out type))
{
return(false);
}
// Now extract the source value that was in the local or url
var src = value.Substring(open + 1, close - (open + 1));
src = src.Trim();
if (src.StartsWith('\''))
{
if (!src.EndsWith('\''))
{
return(false);
}
src = src.Substring(1, src.Length - 2);
}
else if (src.StartsWith('"'))
{
if (!src.EndsWith('\"'))
{
return(false);
}
src = src.Substring(1, src.Length - 2);
}
// Now parse the format(woff) etc.
FontSourceFormat format = FontSourceFormat.Default;
if (value.Length > (close + 1))
{
value = value.Substring(close + 1).Trim();
}
else
{
value = string.Empty;
}
if (value.Length > 0 && value.StartsWith("format("))
{
open = "format(".Length;
close = value.IndexOf(')', open);
if (close > open)
{
var formatS = value.Substring(open, close - open).Trim();
if (formatS.StartsWith('\''))
{
if (!formatS.EndsWith('\''))
{
return(false);
}
formatS = formatS.Substring(1, formatS.Length - 2);
}
else if (formatS.StartsWith('"'))
{
if (!formatS.EndsWith('\"'))
{
return(false);
}
formatS = formatS.Substring(1, formatS.Length - 2);
}
if (formatS.IndexOf('-') > 0)
{
formatS = formatS.Replace("-", "");
}
if (!Enum.TryParse <FontSourceFormat>(formatS, true, out format))
{
format = FontSourceFormat.Default; //be nice
}
}
else
{
return(false); //deffo not right
}
}
parsed = new PDFFontSource(type, src, format);
return(true);
}