private static bool TryParseInternal(string componentText, bool throwExceptions, out MediaType result)
{
result = null;
if (componentText == null)
{
if (throwExceptions)
throw new ArgumentNullException("componentText");
return false;
}
if (componentText == "")
{
if (throwExceptions)
throw new ArgumentException("componentText");
return false;
}
var priority = 1.0f; // default priority
var encodingSpecified = false;
Encoding encoding = null;
var parts = componentText.Split(';');
var mediaRange = parts[0];
var typeParts = mediaRange.Split(new[] { '/' }, 2);
if (typeParts.Length != 2)
{
if (throwExceptions)
throw new ArgumentException("componentText");
return false;
}
var mediaType = typeParts[0];
var mediaSubtype = typeParts[1];
if (parts.Length > 1)
{
for (var i = 1; i < parts.Length; i++)
{
var part = parts[i].ToLowerInvariant().Trim();
if (part.StartsWith("q="))
{
var quality = part.Substring(2);
float q;
if (float.TryParse(quality, NumberStyles.Float, CultureInfo.InvariantCulture, out q))
{
priority = q;
}
}
else if (part.StartsWith("charset="))
{
encodingSpecified = true;
try
{
var encName = part.Substring(8);
encoding = encName.Equals("utf-8", StringComparison.OrdinalIgnoreCase)
? Helper.UTF8NoBom
: Encoding.GetEncoding(encName);
}
catch (ArgumentException)
{
encoding = null;
}
}
}
}
result = new MediaType(mediaRange, mediaType, mediaSubtype, priority, encodingSpecified, encoding);
return true;
}
public static bool TryParse(string componentText, out MediaType result)
{
return TryParseInternal(componentText, false, out result);
}
